@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Sans+JP:wght@400;500;600;700&family=Noto+Sans+TC:wght@400;500;700;900&display=swap');

:root {
  --manager-bg: #f7f4ef;
  --manager-ink: #33231f;
  --manager-muted: #7b625a;
  --manager-line: rgba(111, 78, 55, 0.16);
  --manager-glass: rgba(255, 255, 255, 0.66);
  --manager-glass-strong: rgba(255, 255, 255, 0.84);
  --manager-accent: #6f4e37;
  --manager-accent-2: #2f776d;
  --manager-warm: #c9854e;
  --manager-danger: #b74b3f;
  --manager-shadow: 0 24px 70px rgba(77, 53, 40, 0.16);
  --manager-radius: 18px;
}

* {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
  overflow-x: hidden;
  overflow-y: auto;
}

body {
  margin: 0;
  font-family: 'IBM Plex Sans JP', 'Noto Sans TC', 'PingFang TC', sans-serif;
  color: var(--manager-ink);
  background:
    radial-gradient(circle at 12% 12%, rgba(231, 173, 122, 0.38), transparent 30vw),
    radial-gradient(circle at 92% 18%, rgba(86, 132, 122, 0.22), transparent 28vw),
    linear-gradient(135deg, #f7f4ef 0%, #efe6da 48%, #f8f2e9 100%);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(111, 78, 55, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(111, 78, 55, 0.04) 1px, transparent 1px);
  background-size: 42px 42px;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.85), transparent 82%);
  z-index: -1;
}

button,
input,
textarea {
  font: inherit;
}

button {
  border: 0;
}

.manager-shell { min-height: 100vh; }

.manager-frame { max-width: none; }

.rail,
.workspace,
.glass-card,
.modal-card {
  background: var(--manager-glass);
  border: 1px solid var(--manager-line);
  box-shadow: var(--manager-shadow);
  backdrop-filter: blur(22px) saturate(160%);
  -webkit-backdrop-filter: blur(22px) saturate(160%);
}

.rail { border-radius: var(--cm-radius-lg); }

.brand-mark {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--manager-line);
}

.brand-badge {
  width: 46px;
  height: 46px;
  border-radius: 16px;
  display: grid;
  place-items: center;
  color: #fff;
  font-size: 22px;
  font-weight: 900;
  background: linear-gradient(135deg, var(--manager-accent), var(--manager-warm));
  box-shadow: 0 10px 22px rgba(111, 78, 55, 0.24);
}

.brand-title {
  font-size: 19px;
  font-weight: 800;
  letter-spacing: 0;
}

.brand-subtitle {
  margin-top: 2px;
  color: var(--manager-muted);
  font-size: 12px;
}

.rail-section-title {
  color: var(--manager-muted);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.class-list {
  display: grid;
  gap: 8px;
}

.class-pill {
  width: 100%;
  min-height: 48px;
  padding: 10px 12px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  text-align: left;
  color: var(--manager-muted);
  background: rgba(255, 255, 255, 0.46);
  border: 1px solid transparent;
  border-radius: 14px;
  cursor: pointer;
  transition: transform 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}

.class-pill:hover,
.class-pill.active {
  color: var(--manager-ink);
  background: rgba(255, 255, 255, 0.84);
  border-color: rgba(111, 78, 55, 0.22);
  transform: translateX(3px);
}

.class-pill strong {
  display: block;
  font-size: 14px;
}

.class-pill span {
  font-size: 12px;
}

.class-pill-status {
  min-width: 58px;
  min-height: 28px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 4px 8px;
  border-radius: 999px;
  color: var(--manager-muted);
  background: rgba(111, 78, 55, 0.08);
  border: 1px solid rgba(111, 78, 55, 0.1);
  font-size: 12px;
  font-weight: 900;
  white-space: nowrap;
}

.class-pill-status.is-current {
  color: #fff;
  background: linear-gradient(135deg, var(--manager-accent-2), #3f8a7f);
  border-color: rgba(47, 119, 109, 0.22);
}

.rail-actions {
  margin-top: auto;
  display: grid;
  gap: 10px;
}

.workspace { border-radius: 30px; }

.topbar {
  height: auto;
  margin: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 24px;
  border-bottom: 1px solid var(--manager-line);
  background: rgba(255, 255, 255, 0.38);
}

.eyebrow {
  color: var(--manager-accent);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.1em;
}

.page-title {
  margin: 5px 0 0;
  font-size: clamp(30px, 4vw, 52px);
  line-height: 1;
  letter-spacing: 0;
}

.page-desc {
  max-width: 720px;
  margin: 12px 0 0;
  color: var(--manager-muted);
  line-height: 1.7;
}

.topbar-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.content-grid {
  padding: 24px;
  display: grid;
  gap: 18px;
}

.overview-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

.stat-card {
  padding: 16px;
  border-radius: var(--manager-radius);
  background: rgba(255, 255, 255, 0.56);
  border: 1px solid var(--manager-line);
}

.stat-label {
  color: var(--manager-muted);
  font-size: 12px;
  font-weight: 700;
}

.stat-value {
  margin-top: 6px;
  font-size: 28px;
  font-weight: 900;
}

.class-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(310px, 1fr));
  gap: 16px;
}

.class-card {
  padding: 18px;
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.58);
  border: 1px solid var(--manager-line);
  box-shadow: 0 16px 44px rgba(95, 70, 55, 0.12);
  min-height: 270px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.class-card.active {
  border-color: rgba(47, 119, 109, 0.44);
  box-shadow: 0 20px 50px rgba(47, 119, 109, 0.16);
}

.class-card:not(.active) {
  opacity: 0.86;
}

.class-card.active::before {
  content: "目前班級";
  align-self: flex-start;
  min-height: 26px;
  display: inline-flex;
  align-items: center;
  padding: 3px 9px;
  border-radius: 999px;
  color: var(--cm-accent-2);
  background: rgba(46, 117, 108, 0.1);
  border: 1px solid rgba(46, 117, 108, 0.18);
  font-size: 12px;
  font-weight: 800;
  order: -1;
}

.class-card-header {
  display: flex;
  justify-content: space-between;
  gap: 12px;
}

.class-name {
  font-size: 22px;
  font-weight: 900;
}

.class-meta {
  margin-top: 3px;
  color: var(--manager-muted);
  font-size: 13px;
}

.mini-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
}

.mini-stat {
  min-height: 64px;
  padding: 10px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.54);
  border: 1px solid rgba(111, 78, 55, 0.11);
}

.mini-stat strong {
  display: block;
  font-size: 19px;
}

.mini-stat span {
  color: var(--manager-muted);
  font-size: 12px;
}

.blackboard-preview {
  flex: 1;
  min-height: 74px;
  padding: 12px;
  color: #f9f2db;
  border-radius: 16px;
  background:
    linear-gradient(135deg, rgba(8, 50, 36, 0.94), rgba(31, 75, 49, 0.92)),
    radial-gradient(circle at 20% 20%, rgba(255, 255, 255, 0.14), transparent 38%);
  box-shadow: inset 0 0 26px rgba(0, 0, 0, 0.35);
  white-space: pre-line;
  overflow: hidden;
  line-height: 1.55;
}

.tool-row {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
}

.tool-link,
.btn {
  min-height: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 14px;
  border-radius: 999px;
  text-decoration: none;
  cursor: pointer;
  color: var(--manager-ink);
  background: rgba(255, 255, 255, 0.62);
  border: 1px solid rgba(111, 78, 55, 0.16);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.72);
  transition: transform 0.18s ease, background 0.18s ease, border-color 0.18s ease;
}

.tool-link:hover,
.btn:hover {
  transform: translateY(-2px);
  background: rgba(255, 255, 255, 0.92);
  border-color: rgba(111, 78, 55, 0.28);
}

.btn.primary {
  color: #fff;
  background: linear-gradient(135deg, var(--manager-accent), #966b4c);
}

.btn.secondary {
  color: var(--manager-accent-2);
}

.btn.danger {
  color: #fff;
  background: var(--manager-danger);
}

.empty-state {
  min-height: 360px;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 42px;
  border-radius: 24px;
  border: 1px dashed rgba(111, 78, 55, 0.24);
  background: rgba(255, 255, 255, 0.42);
}

.empty-state h2 {
  margin: 0 0 10px;
  font-size: 28px;
}

.empty-state p {
  margin: 0 0 20px;
  color: var(--manager-muted);
}

.legacy-note {
  padding: 14px 16px;
  border-radius: 16px;
  background: rgba(47, 119, 109, 0.11);
  border: 1px solid rgba(47, 119, 109, 0.2);
  color: #285d55;
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
}

.modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 18px;
  background: rgba(63, 43, 34, 0.26);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.modal-backdrop.visible {
  display: flex;
}

.modal-card {
  width: min(620px, 100%);
  max-height: calc(100vh - 36px);
  overflow: auto;
  border-radius: 24px;
  padding: 22px;
}

.modal-title {
  margin: 0 0 16px;
  font-size: 24px;
}

.field {
  display: grid;
  gap: 7px;
  margin-bottom: 14px;
}

.field label {
  color: var(--manager-muted);
  font-size: 13px;
  font-weight: 800;
}

.field input,
.field textarea {
  width: 100%;
  color: var(--manager-ink);
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid var(--manager-line);
  border-radius: 14px;
  padding: 12px 14px;
  outline: none;
}

.field textarea {
  min-height: 190px;
  resize: vertical;
  line-height: 1.55;
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  flex-wrap: wrap;
  padding-top: 6px;
}

@media (max-width: 980px) {
  .manager-shell {
    padding: 12px;
  }

  .manager-frame {
    grid-template-columns: 1fr;
  }

  .rail {
    position: static;
    min-height: auto;
  }

  .overview-strip,
  .tool-row {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 620px) {
  .topbar {
    align-items: flex-start;
    flex-direction: column;
    padding: 18px;
  }

  .content-grid {
    padding: 16px;
  }

  .overview-strip,
  .mini-stats,
  .tool-row {
    grid-template-columns: 1fr;
  }

  .class-grid {
    grid-template-columns: 1fr;
  }
}

/* ==========================================================================
   UNIFIED CLASSROOM DASHBOARD COMPONENTS
   ========================================================================== */

/* ── Blackboard Styles ── */
:root {
  --bb-green: #1a3c23;
  --chalk: #fff8dc;
}

.blackboard-tabs {
  display: grid !important;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.blackboard-tab {
  min-height: 72px;
  padding: 10px;
  border: 1px solid rgba(111, 78, 55, 0.14);
  border-radius: 13px;
  background: rgba(255, 255, 255, 0.52);
  color: var(--manager-muted);
  font-family: inherit;
  cursor: pointer;
  display: grid;
  gap: 3px;
  text-align: left;
  transition: transform 0.24s var(--cm-motion), background 0.24s ease, border-color 0.24s ease, box-shadow 0.24s ease;
}

.blackboard-tab:hover {
  transform: translateY(-1px);
  background: rgba(255, 255, 255, 0.78);
}

.blackboard-tab strong {
  color: var(--manager-ink);
  font-size: 13px;
  font-weight: 900;
}

.blackboard-tab span {
  font-size: 10px;
  font-weight: 800;
}

.blackboard-tab.is-active {
  background: linear-gradient(135deg, rgba(46, 117, 108, 0.16), rgba(255, 255, 255, 0.82));
  border-color: rgba(46, 117, 108, 0.28);
  box-shadow: 0 10px 24px rgba(46, 117, 108, 0.12);
}

.blackboard-tab.is-active strong {
  color: var(--manager-accent);
}

.todo-board-mode .blackboard-bg {
  --bb-green: #173f36;
}

.todo-temp-status {
  color: #0f766e !important;
}

.todo-clear-btn {
  color: #0f766e !important;
  border-color: rgba(15, 118, 110, 0.22) !important;
  background: rgba(240, 253, 250, 0.72) !important;
}

.blackboard-bg {
  background-color: var(--bb-green);
  background-image:
    url('https://www.transparenttextures.com/patterns/dust.png'),
    radial-gradient(ellipse at 25% 20%, rgba(255,255,255,0.04) 0%, transparent 55%),
    linear-gradient(160deg, rgba(0,0,0,0.2) 0%, transparent 50%);
  box-shadow:
    inset 0 0 80px rgba(0,0,0,0.7),
    inset 0 2px 0 rgba(255,255,255,0.03),
    0 22px 50px rgba(0,0,0,0.18),
    0 6px 15px rgba(0,0,0,0.08),
    0 0 0 14px #5c4033;
  border-radius: 4px;
  color: var(--chalk);
  position: relative;
  outline: 2px solid #3d2b1a;
  margin-bottom: 24px;
  transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.5s cubic-bezier(0.16, 1, 0.3, 1);
  transform: perspective(1200px) rotateX(1deg) rotateY(-0.5deg) translateZ(0px);
}

.blackboard-bg:hover {
  transform: perspective(1200px) rotateX(0deg) rotateY(0deg) translateZ(6px);
  box-shadow:
    inset 0 0 80px rgba(0,0,0,0.7),
    inset 0 2px 0 rgba(255,255,255,0.03),
    0 35px 80px rgba(0,0,0,0.26),
    0 12px 24px rgba(0,0,0,0.12),
    0 0 0 14px #654638;
}

.blackboard-bg::after {
  content: '';
  position: absolute; bottom: -28px; left: 5%; right: 5%; height: 14px;
  background: #4a3020;
  border-radius: 0 0 4px 4px;
  box-shadow: 0 4px 8px rgba(0,0,0,0.3);
}

.blackboard-bg:fullscreen,
.blackboard-bg:-webkit-full-screen {
  border-radius: 0;
  width: 100vw; height: 100vh;
  aspect-ratio: auto;
  outline: none;
  transform: none !important;
  box-shadow: none !important;
}

.info-bar {
  display: flex; align-items: center; gap: 16px;
  padding: 6px 4px;
}

.info-item {
  display: flex; align-items: center; gap: 5px;
  font-size: 11px; color: var(--manager-muted);
}

.btn-fullscreen {
  position: absolute; top: 10px; right: 10px; z-index: 20;
  background: rgba(0,0,0,0.5); backdrop-filter: blur(6px);
  color: rgba(255,255,255,0.75);
  border: 1px solid rgba(255,255,255,0.12);
  padding: 5px 12px; border-radius: 7px;
  font-size: 12px; font-family: inherit; font-weight: 600;
  cursor: pointer; transition: all 0.2s;
}

.btn-fullscreen:hover { background: rgba(0,0,0,0.7); color: #fff; }

.bb-zhuyin-track {
  display: flex; flex-direction: column;
  align-items: flex-start;
  font-weight: 700;
  color: rgba(255,248,220,0.88);
}

.bb-zy-char, .bb-zy-light {
  line-height: 1;
  position: relative;
  display: flex; align-items: center; justify-content: center;
  width: 1em;
}

.bb-zy-tone {
  font-size: 0.8em;
  position: absolute; left: 100%; top: -0.15em;
  white-space: nowrap;
}

/* ── Point System Styles ── */
#student-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
}

.student-card {
  padding: 16px;
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  background: var(--manager-glass);
  border: 1px solid var(--manager-line);
  border-radius: var(--manager-radius);
}

.student-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  margin-bottom: 10px;
}

.student-name {
  font-size: 1.15em;
  font-weight: 700;
}

.student-score {
  font-size: 2.2em;
  font-weight: 900;
  color: var(--manager-accent);
}

.score-controls {
  display: flex;
  gap: 10px;
  margin-top: 14px;
}

.score-btn {
  width: 42px;
  height: 42px;
  font-size: 1.8em;
  line-height: 42px;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.ios-feedback {
  position: absolute;
  inset: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 3em;
  font-weight: 900;
  color: white;
  pointer-events: none;
  opacity: 0;
  animation: ios-pop 0.6s ease-out;
  z-index: 10;
}

.ios-feedback-icon {
  width: 1.6em;
  height: 1.6em;
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
  backdrop-filter: blur(10px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.15);
}

@keyframes ios-pop {
  0% { opacity: 0.95; transform: scale(0.6); }
  100% { opacity: 0; transform: scale(1.3); }
}

/* ── Grouping Styles ── */
.group-container {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 18px;
  align-items: start;
}

.groups-area {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 16px;
}

.group-column {
  padding: 16px;
  position: relative;
  min-height: 200px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.group-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
  flex-wrap: wrap;
  gap: 8px;
}

.group-members {
  min-height: 120px;
  border-radius: 12px;
  padding: 8px;
  background: rgba(111, 78, 55, 0.05);
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(65px, 1fr));
  gap: 6px;
  align-content: start;
}

.student-chip {
  background: rgba(255, 255, 255, 0.74);
  border: 1px solid var(--manager-line);
  padding: 6px;
  border-radius: 8px;
  cursor: grab;
  text-align: center;
  font-size: 0.85em;
  user-select: none;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.student-chip:hover {
  transform: scale(1.05);
  box-shadow: 0 4px 10px rgba(0,0,0,0.05);
}

.student-chip:active {
  cursor: grabbing;
}

/* ── Group Command Console ── */
.group-ops-page {
  display: grid;
  gap: 16px;
  min-width: 0;
}

.group-ops-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(250px, auto);
  gap: 16px;
  align-items: end;
  padding: clamp(16px, 2.4vw, 24px);
  border: 1px solid rgba(24, 54, 96, 0.16);
  border-radius: 18px;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.92), rgba(231, 247, 255, 0.86)),
    repeating-linear-gradient(135deg, rgba(255, 203, 80, 0.16) 0 8px, transparent 8px 20px);
  box-shadow: 0 16px 38px rgba(41, 61, 92, 0.12);
}

.group-ops-hero h2 {
  margin: 2px 0 8px;
  color: var(--manager-ink);
  font-size: clamp(28px, 4vw, 48px);
  line-height: 1;
  letter-spacing: 0;
}

.group-ops-hero p {
  max-width: 58em;
  margin: 0;
  color: var(--manager-muted);
  font-weight: 800;
  line-height: 1.65;
}

.group-ops-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
  min-width: 0;
}

.group-ops-stats span {
  min-height: 42px;
  display: grid;
  place-items: center;
  padding: 7px 10px;
  border: 2px solid rgba(24, 54, 96, 0.18);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.72);
  color: var(--manager-ink);
  font-size: clamp(12px, 1.1vw, 14px);
  font-weight: 950;
  text-align: center;
}

.group-ops-layout {
  display: grid;
  grid-template-columns: minmax(230px, 0.7fr) minmax(430px, 1.45fr) minmax(260px, 0.82fr);
  gap: 16px;
  align-items: start;
  min-width: 0;
}

.group-control-panel,
.group-board-panel,
.group-ranking-panel {
  min-width: 0;
  border: 1px solid rgba(24, 54, 96, 0.14);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.72);
  box-shadow: 0 14px 32px rgba(41, 61, 92, 0.1);
}

.group-control-panel,
.group-ranking-panel {
  display: grid;
  gap: 12px;
  padding: 14px;
  position: sticky;
  top: 16px;
}

.group-board-panel {
  padding: 14px;
}

.group-control-block {
  display: grid;
  gap: 10px;
  min-width: 0;
}

.group-control-block label {
  display: grid;
  gap: 6px;
  color: var(--manager-ink);
  font-weight: 950;
}

.group-control-block input[type="number"] {
  width: 100%;
  min-height: 42px;
  padding: 8px 10px;
  border: 2px solid rgba(24, 54, 96, 0.18);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.86);
  color: var(--manager-ink);
  font: inherit;
  font-weight: 900;
}

.group-control-actions {
  display: grid;
  gap: 8px;
}

.group-wide-button {
  width: 100%;
}

.group-panel-title,
.group-section-head,
.group-command-head,
.group-rank-main {
  min-width: 0;
}

.group-panel-title,
.group-section-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
}

.group-panel-title strong,
.group-section-head h3,
.group-command-head h3 {
  color: var(--manager-ink);
  font-weight: 950;
}

.group-panel-title span,
.group-section-head > span {
  color: var(--manager-muted);
  font-size: 12px;
  font-weight: 900;
}

.group-section-head {
  margin-bottom: 12px;
}

.group-section-head h3 {
  margin: 2px 0 0;
  font-size: clamp(20px, 2vw, 26px);
}

.group-section-head.compact {
  align-items: end;
}

.group-section-head.compact .cm-button {
  min-height: 36px;
  padding: 7px 12px;
  white-space: nowrap;
}

.group-card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(310px, 1fr));
  gap: 14px;
  min-width: 0;
}

.group-command-card {
  position: relative;
  display: grid;
  gap: 12px;
  min-width: 0;
  padding: 14px;
  border: 2px solid rgba(24, 54, 96, 0.2);
  border-radius: 16px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.95), rgba(248, 252, 255, 0.9));
  box-shadow: 0 6px 0 rgba(24, 54, 96, 0.16), 0 16px 28px rgba(41, 61, 92, 0.09);
}

.group-command-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 10px;
  align-items: start;
}

.group-command-head h3 {
  margin: 7px 0 0;
  font-size: clamp(20px, 2.4vw, 28px);
}

.group-id-pill {
  display: inline-flex;
  min-height: 28px;
  align-items: center;
  padding: 4px 9px;
  border-radius: 999px;
  background: #17325f;
  color: #fff8d7;
  font-size: 12px;
  font-weight: 950;
}

.group-score-meter {
  min-width: 86px;
  padding: 8px 10px;
  border-radius: 14px;
  background: linear-gradient(180deg, #ffcf4f, #fff3bd);
  color: #17325f;
  text-align: center;
  box-shadow: inset 0 0 0 2px rgba(23, 50, 95, 0.14);
}

.group-score-meter span {
  display: block;
  font-size: 11px;
  font-weight: 950;
}

.group-score-meter strong {
  display: block;
  font-size: clamp(24px, 3vw, 34px);
  line-height: 1;
}

.group-command-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.group-command-stats span {
  padding: 5px 9px;
  border-radius: 999px;
  background: rgba(46, 117, 108, 0.12);
  color: var(--manager-ink);
  font-size: 12px;
  font-weight: 900;
}

.group-command-actions {
  display: grid;
  gap: 8px;
}

.group-action-row {
  display: grid;
  grid-template-columns: minmax(72px, 0.72fr) repeat(3, minmax(44px, 1fr));
  gap: 6px;
  align-items: center;
}

.group-action-row > span {
  color: var(--manager-muted);
  font-size: 12px;
  font-weight: 950;
}

.group-action-btn,
.group-mini-score-btn {
  min-width: 0;
  border: 0;
  border-radius: 11px;
  font: inherit;
  font-weight: 950;
  cursor: pointer;
  transition: transform 0.16s var(--cm-motion), filter 0.16s ease, box-shadow 0.16s ease;
}

.group-action-btn {
  min-height: 38px;
  padding: 7px 8px;
  color: #ffffff;
}

.group-action-btn:hover,
.group-mini-score-btn:hover {
  transform: translateY(-1px);
  filter: saturate(1.06);
}

.group-action-btn.is-plus,
.group-mini-score-btn.is-plus {
  background: #2f9e44;
  box-shadow: 0 4px 0 #1f6b32;
}

.group-action-btn.is-minus,
.group-mini-score-btn.is-minus {
  background: #df4d4d;
  box-shadow: 0 4px 0 #9e3030;
}

.group-action-btn.is-warm {
  background: #d99318;
  box-shadow: 0 4px 0 #946214;
}

.group-action-btn.is-warm-minus {
  background: #8b6f50;
  box-shadow: 0 4px 0 #5a4630;
}

.group-command-card .group-members,
.group-control-panel .group-members {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  min-height: 112px;
  padding: 10px;
  border: 2px dashed rgba(24, 54, 96, 0.16);
  border-radius: 14px;
  background: rgba(231, 247, 255, 0.42);
}

.group-control-panel .group-members {
  max-height: 48vh;
  overflow-y: auto;
}

.group-empty-drop {
  display: grid;
  place-items: center;
  min-height: 86px;
  border-radius: 11px;
  color: var(--manager-muted);
  background: rgba(255, 255, 255, 0.52);
  font-weight: 900;
  text-align: center;
}

.group-member-chip {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 8px;
  align-items: center;
  min-width: 0;
  padding: 9px;
  border: 1px solid rgba(24, 54, 96, 0.14);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.86);
  cursor: grab;
  user-select: none;
  box-shadow: 0 8px 18px rgba(41, 61, 92, 0.08);
}

.group-member-chip:active {
  cursor: grabbing;
}

.group-member-main {
  display: grid;
  gap: 2px;
  min-width: 0;
}

.group-member-main strong {
  overflow: hidden;
  color: var(--manager-ink);
  font-size: 13px;
  font-weight: 950;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.group-member-main span {
  color: var(--manager-muted);
  font-size: 12px;
  font-weight: 900;
}

.group-member-actions {
  display: grid;
  grid-template-columns: repeat(2, 34px);
  gap: 5px;
}

.group-mini-score-btn {
  width: 34px;
  height: 32px;
  color: #ffffff;
}

.group-ranking-list {
  display: grid;
  gap: 9px;
}

.group-rank-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 8px 10px;
  align-items: center;
  padding: 11px;
  border: 1px solid rgba(24, 54, 96, 0.14);
  border-radius: 13px;
  background: rgba(255, 255, 255, 0.82);
}

.group-rank-main strong {
  display: block;
  color: var(--manager-ink);
  font-size: 14px;
  font-weight: 950;
}

.group-rank-main span {
  display: block;
  color: var(--manager-muted);
  font-size: 12px;
  font-weight: 850;
}

.group-rank-row em {
  color: #17325f;
  font-size: clamp(24px, 2.5vw, 34px);
  font-style: normal;
  font-weight: 950;
  line-height: 1;
}

.group-rank-bar {
  grid-column: 1 / -1;
  height: 8px;
  overflow: hidden;
  border-radius: 999px;
  background: rgba(24, 54, 96, 0.08);
}

.group-rank-bar i {
  display: block;
  height: 100%;
  min-width: 8px;
  border-radius: inherit;
  background: linear-gradient(90deg, #2f9e44, #ffcf4f);
}

.group-rank-bar i.is-negative {
  background: linear-gradient(90deg, #df4d4d, #8b6f50);
}

.group-rank-row.rank-1 {
  border-color: rgba(217, 147, 24, 0.38);
  background: linear-gradient(180deg, rgba(255, 248, 215, 0.95), rgba(255, 255, 255, 0.86));
}

@media (max-width: 1280px) {
  .group-ops-layout {
    grid-template-columns: minmax(230px, 0.68fr) minmax(0, 1.32fr);
  }

  .group-ranking-panel {
    grid-column: 1 / -1;
    position: static;
  }

  .group-ranking-list {
    grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  }
}

@media (max-width: 900px) {
  .group-ops-hero,
  .group-ops-layout {
    grid-template-columns: 1fr;
  }

  .group-control-panel {
    position: static;
  }

  .group-ops-stats {
    grid-template-columns: 1fr;
  }

  .group-card-grid {
    grid-template-columns: 1fr;
  }
}

#group-ranking-podium {
  display: flex;
  gap: 15px;
  align-items: flex-end;
  justify-content: center;
  min-height: 260px;
  padding: 20px;
  background: rgba(255, 255, 255, 0.4);
  border-radius: 18px;
  margin-top: 10px;
}

.podium-stand {
  flex: 1;
  max-width: 180px;
  text-align: center;
  color: white;
  padding: 16px;
  border-radius: 15px 15px 0 0;
  box-shadow: 0 10px 24px rgba(77, 53, 40, 0.15);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
}

.podium-stand h3 {
  margin: 0 0 6px;
  font-size: 1.1em;
  font-weight: 800;
}

.podium-stand .score {
  font-size: 2.2em;
  font-weight: 900;
  margin: 8px 0;
}

.podium-1st {
  background: linear-gradient(to top, #d97706, #fbbf24);
  height: 210px;
}

.podium-2nd {
  background: linear-gradient(to top, #708090, #cbd5e1);
  height: 160px;
}

.podium-3rd {
  background: linear-gradient(to top, #8c4f2b, #cd7f32);
  height: 120px;
}

/* ── Homework Styles ── */
#homework-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
}

.homework-card {
  cursor: pointer;
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.homework-card:hover {
  transform: translateY(-2px);
}

.status-summary {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-top: 12px;
}

.status-box {
  background: rgba(111, 78, 55, 0.05);
  padding: 6px 10px;
  border-radius: 8px;
  font-size: 0.85em;
  display: flex;
  align-items: center;
  gap: 6px;
}

.status-box .count {
  font-weight: 800;
  font-size: 1.15em;
  margin-left: auto;
}

#student-checklist-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
  gap: 12px;
}

.student-status-item {
  padding: 12px;
  text-align: center;
  cursor: pointer;
  transition: background 0.18s ease, border-color 0.18s ease;
  border: 2px solid;
  border-radius: var(--manager-radius);
  font-weight: 700;
}

.s-completed {
  background: #2e756c;
  border-color: #2e756c;
  color: white;
}

.s-submitted {
  background: #6f4e37;
  border-color: #6f4e37;
  color: white;
}

.s-needs_correction {
  background: #c7834b;
  border-color: #c7834b;
  color: white;
}

.s-pending {
  background: transparent;
  border-color: rgba(111, 78, 55, 0.2);
  color: var(--manager-muted);
}

.task-board-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 16px;
}

.task-board-item {
  padding: 16px;
}

.task-board-students {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.student-task-btn {
  font-size: 1.05em;
  font-weight: 700;
  padding: 8px;
  min-width: 44px;
  text-align: center;
  cursor: pointer;
  border: 1px solid var(--manager-line);
  border-radius: 8px;
}

.student-task-btn.is-pending {
  background: rgba(199, 131, 75, 0.1);
  color: #c7834b;
  border-color: rgba(199, 131, 75, 0.3);
}

.student-task-btn.is-correction {
  background: rgba(169, 67, 56, 0.1);
  color: #a94338;
  border-color: rgba(169, 67, 56, 0.3);
}

.student-task-btn:hover {
  transform: scale(1.1);
}

/* ── Floating Tool Widgets ── */
.side-tools-container {
  position: fixed;
  top: 55%;
  right: 20px;
  transform: translateY(-50%);
  z-index: 1001;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.side-tool-btn {
  width: 54px;
  height: 54px;
  font-size: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50% !important;
  box-shadow: 0 8px 24px rgba(77, 53, 40, 0.2);
}

.tool-widget {
  position: fixed;
  top: 20px;
  right: 90px;
  width: 320px;
  z-index: 1000;
  opacity: 0;
  transform: translateX(20px);
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  pointer-events: none;
  padding: 16px;
}

.tool-widget.active {
  opacity: 1;
  transform: translateX(0);
  pointer-events: auto;
}

#timer-display {
  font-size: 3.5em;
  font-weight: 900;
  text-align: center;
  cursor: pointer;
  color: var(--manager-accent);
  margin: 10px 0;
}

.timer-presets {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin-bottom: 12px;
}

.picker-viewport {
  height: 60px;
  overflow: hidden;
  position: relative;
  margin: 15px 0;
  border-top: 1px solid var(--manager-line);
  border-bottom: 1px solid var(--manager-line);
  background: rgba(255, 255, 255, 0.4);
  border-radius: 8px;
}

.picker-wheel {
  text-align: center;
  transition: transform 4s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.picker-name {
  font-size: 1.8em;
  font-weight: 700;
  line-height: 60px;
  color: var(--manager-ink);
}

/* ── Integrated Teacher Tool Page ── */
.brand-copy {
  min-width: 0;
}

.brand-subline {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.firebase-login-placeholder {
  min-height: 26px;
  padding: 4px 9px;
  border-radius: 999px;
  border: 1px solid rgba(196, 153, 112, 0.38);
  background: rgba(255, 255, 255, 0.54);
  color: var(--manager-accent);
  font-size: 11px;
  font-weight: 900;
  cursor: pointer;
  transition: transform 0.2s var(--cm-motion), background 0.2s ease, box-shadow 0.2s ease;
}

.firebase-login-placeholder:hover {
  transform: translateY(-1px);
  background: rgba(255, 255, 255, 0.84);
  box-shadow: 0 10px 24px rgba(77, 53, 40, 0.12);
}

.teacher-tools-page {
  display: grid;
  gap: 16px;
}

.tool-hero-card {
  padding: 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  overflow: hidden;
  position: relative;
}

.tool-hero-card::after {
  content: "";
  position: absolute;
  right: -70px;
  top: -90px;
  width: 240px;
  height: 240px;
  border-radius: 50%;
  border: 34px solid rgba(46, 117, 108, 0.08);
  animation: toolSpin 18s linear infinite;
}

.tool-hero-card h2,
.tool-panel h3 {
  margin: 4px 0 0;
  color: var(--manager-ink);
}

.tool-hero-card p {
  max-width: 680px;
  margin: 8px 0 0;
  color: var(--manager-muted);
  font-weight: 700;
}

.tool-class-chip {
  position: relative;
  z-index: 1;
  min-width: 160px;
  padding: 12px 16px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.62);
  border: 1px solid var(--manager-line);
  display: grid;
  gap: 4px;
  box-shadow: 0 14px 34px rgba(77, 53, 40, 0.1);
}

.tool-class-chip span {
  color: var(--manager-muted);
  font-size: 12px;
  font-weight: 900;
}

.teacher-tool-grid {
  display: grid;
  grid-template-columns: minmax(280px, 0.9fr) minmax(320px, 1.1fr);
  gap: 16px;
  align-items: stretch;
}

/* ── FunFun AI Tools Panel ── */
.ai-tools-page {
  display: grid;
  gap: 14px;
  align-content: start;
}

.ai-tools-control-bar {
  position: static;
  z-index: 8;
  padding: 14px;
  display: grid;
  gap: 0;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(255, 250, 226, 0.94)),
    repeating-linear-gradient(135deg, rgba(255, 207, 79, 0.09) 0 7px, transparent 7px 20px) !important;
  border: 3px solid #17325f !important;
  border-radius: 18px !important;
  box-shadow: 0 6px 0 #17325f, 0 16px 32px rgba(23, 50, 95, 0.12) !important;
}

.ai-tools-compact-toolbar {
  display: grid;
  grid-template-columns: minmax(300px, 380px) minmax(420px, 1fr) minmax(128px, auto);
  gap: 14px;
  align-items: center;
}

.ai-tools-select-field,
.ai-tools-search-field {
  min-height: 58px;
  border-radius: 16px;
  border: 3px solid #17325f;
  background: #ffffff;
  color: var(--manager-muted);
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 16px;
  box-shadow: 0 4px 0 #17325f;
}

.ai-tools-select-field span {
  color: #ff5f4c;
  font-size: 14px;
  font-weight: 950;
  white-space: nowrap;
}

.ai-tools-select-field select {
  width: 100%;
  min-width: 0;
  border: none;
  outline: none;
  background: transparent;
  color: var(--manager-ink);
  font: inherit;
  font-size: 17px;
  font-weight: 950;
  cursor: pointer;
}

.ai-tools-refresh-button {
  min-height: 58px;
  padding: 0 18px;
  border-radius: 16px;
  border: 3px solid #17325f;
  background: linear-gradient(135deg, #ff5f4c, #ffcf4f);
  color: #17325f;
  font-size: 15px;
  font-weight: 950;
  cursor: pointer;
  box-shadow: 0 4px 0 #17325f;
  transition: transform 0.2s var(--cm-motion), background 0.2s ease;
}

.ai-tools-refresh-button:hover:not(:disabled) {
  transform: translateY(-1px);
  background: linear-gradient(135deg, #ffcf4f, #ff5f4c);
}

.ai-tools-refresh-button:disabled {
  opacity: 0.62;
  cursor: wait;
}

.ai-tools-control-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
}

.ai-tools-control-head h2 {
  margin: 4px 0 0;
  color: var(--manager-ink);
  font-size: 26px;
  line-height: 1.2;
}

.ai-tools-control-head p {
  margin: 8px 0 0;
  color: var(--manager-muted);
  font-size: 14px;
  font-weight: 700;
  line-height: 1.55;
}

.ai-tools-title-block {
  min-width: 0;
}

.ai-tools-account-chip {
  min-width: 280px;
  max-width: 380px;
  padding: 11px 13px;
  border-radius: 14px;
  border: 1px solid rgba(23, 50, 95, 0.18);
  background:
    linear-gradient(135deg, rgba(23, 50, 95, 0.08), rgba(46, 117, 108, 0.1)),
    rgba(255, 255, 255, 0.58);
  display: grid;
  gap: 4px;
}

.ai-tools-account-chip span {
  color: #17325f;
  font-size: 11px;
  font-weight: 900;
}

.ai-tools-account-chip strong {
  color: var(--manager-ink);
  font-size: 13px;
  line-height: 1.45;
  overflow-wrap: anywhere;
}

.ai-tools-sheet-note {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 10px;
  align-items: center;
  padding: 9px 12px;
  border-radius: 14px;
  border: 1px solid rgba(46, 117, 108, 0.16);
  background: rgba(46, 117, 108, 0.07);
}

.ai-tools-sheet-note span {
  min-height: 24px;
  padding: 3px 8px;
  border-radius: 999px;
  background: #17325f;
  color: #fff;
  font-size: 11px;
  font-weight: 950;
}

.ai-tools-sheet-note strong {
  color: var(--manager-ink);
  font-size: 13px;
  font-weight: 950;
  overflow-wrap: anywhere;
}

.ai-tools-sheet-note small {
  color: var(--manager-muted);
  font-size: 12px;
  font-weight: 850;
}

.ai-tools-filter-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 440px);
  gap: 12px;
  align-items: start;
}

.ai-tools-category-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  min-width: 0;
}

.ai-tools-category-tab {
  min-height: 36px;
  padding: 7px 11px;
  border-radius: 999px;
  border: 1px solid var(--manager-line);
  background: rgba(255, 255, 255, 0.7);
  color: var(--manager-muted);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 900;
  cursor: pointer;
  transition: transform 0.2s var(--cm-motion), background 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

.ai-tools-category-count {
  min-width: 22px;
  min-height: 22px;
  padding: 2px 6px;
  border-radius: 999px;
  background: rgba(23, 50, 95, 0.08);
  color: #17325f;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-style: normal;
  font-size: 11px;
  font-weight: 950;
}

.ai-tools-category-tab svg,
.ai-tools-search-field svg,
.ai-tool-favorite svg,
.ai-tool-card-icon svg,
.ai-tool-link-button svg {
  width: 17px;
  height: 17px;
  stroke: currentColor;
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  flex-shrink: 0;
}

.ai-tools-category-tab:hover:not(:disabled) {
  transform: translateY(-1px);
  border-color: rgba(46, 117, 108, 0.36);
  background: rgba(255, 255, 255, 0.86);
  color: var(--manager-ink);
}

.ai-tools-category-tab.is-active {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.46);
  background: linear-gradient(135deg, #17325f, #2e756c);
  box-shadow: 0 10px 24px rgba(23, 50, 95, 0.16);
}

.ai-tools-category-tab.is-active .ai-tools-category-count {
  color: #17325f;
  background: rgba(255, 255, 255, 0.9);
}

.ai-tools-category-tab:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.ai-tools-search-field {
  min-height: 58px;
  border-radius: 16px;
  border: 3px solid #17325f;
  background: #ffffff;
  color: var(--manager-muted);
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 16px;
  box-shadow: 0 4px 0 #17325f;
}

.ai-tools-search-field input {
  width: 100%;
  min-width: 0;
  border: none;
  outline: none;
  background: transparent;
  color: var(--manager-ink);
  font: inherit;
  font-size: 18px;
  font-weight: 950;
}

.ai-tools-search-field input::placeholder {
  color: var(--manager-muted);
  opacity: 0.72;
}

.ai-tools-search-clear {
  border: none;
  border-radius: 999px;
  background: #ffcf4f;
  color: #17325f;
  font-size: 13px;
  font-weight: 950;
  cursor: pointer;
  padding: 6px 10px;
}

.ai-tools-grid-section {
  min-height: 320px;
}

.ai-tools-card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 12px;
  align-items: stretch;
}

.ai-tool-card {
  min-height: 268px;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 11px;
  position: relative;
  overflow: hidden;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(255, 250, 226, 0.94)),
    repeating-linear-gradient(135deg, rgba(255, 207, 79, 0.1) 0 7px, transparent 7px 20px) !important;
  border: 3px solid #17325f !important;
  border-radius: 20px !important;
  box-shadow: 0 7px 0 #17325f, 0 18px 34px rgba(23, 50, 95, 0.14) !important;
  transition: transform 0.24s var(--cm-motion), border-color 0.24s ease, box-shadow 0.24s ease;
}

.ai-tool-card:hover {
  transform: translateY(-3px);
  border-color: #17325f !important;
  box-shadow: 0 10px 0 #17325f, 0 24px 42px rgba(23, 50, 95, 0.16) !important;
}

.ai-tool-favorite {
  position: absolute;
  top: 14px;
  right: 14px;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 3px solid #17325f;
  background: #ffffff;
  color: #17325f;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: transform 0.2s var(--cm-motion), color 0.2s ease, background 0.2s ease;
  z-index: 1;
  box-shadow: 0 3px 0 #17325f;
}

.ai-tool-favorite:hover,
.ai-tool-favorite.is-active {
  color: #17325f;
  background: linear-gradient(135deg, #ff5f4c, #ffcf4f);
  transform: scale(1.05);
}

.ai-tool-favorite.is-active svg {
  fill: currentColor;
}

.ai-tool-card-head {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 11px;
  align-items: flex-start;
  padding-right: 42px;
}

.ai-tool-card-icon {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 3px solid #17325f;
  background: #ffffff;
  color: #17325f;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 3px 0 #17325f;
}

.ai-tool-card-icon.is-featured {
  color: #17325f;
  background:
    linear-gradient(180deg, #ff5f4c 0 46%, #17325f 46% 54%, #ffffff 54% 100%);
}

.ai-tool-category-pill {
  display: inline-flex;
  max-width: 100%;
  padding: 4px 9px;
  border-radius: 999px;
  border: 2px solid #17325f;
  background: #ffcf4f;
  color: #17325f;
  font-size: 11px;
  font-weight: 950;
  line-height: 1.3;
  overflow-wrap: anywhere;
  box-shadow: 0 2px 0 #17325f;
}

.ai-tool-card h3 {
  margin: 7px 0 0;
  color: var(--manager-ink);
  font-size: 17px;
  line-height: 1.35;
  overflow-wrap: anywhere;
}

.ai-tool-card p {
  margin: 0;
  color: var(--manager-muted);
  font-size: 14px;
  font-weight: 700;
  line-height: 1.52;
  min-height: 62px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.ai-tool-card-categories {
  min-height: 30px;
  display: flex;
  align-items: flex-start;
  gap: 6px;
  flex-wrap: wrap;
}

.ai-tool-card-categories span {
  padding: 4px 8px;
  border-radius: 999px;
  border: 2px solid rgba(23, 50, 95, 0.3);
  background: rgba(255, 255, 255, 0.82);
  color: #17325f;
  font-size: 11px;
  font-weight: 950;
}

.ai-tool-card-actions {
  margin-top: auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
}

.ai-tool-link-button {
  min-height: 48px;
  height: 48px;
  border-radius: 14px;
  border: 3px solid #17325f;
  background: linear-gradient(135deg, #ff5f4c, #ffcf4f);
  color: #17325f;
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 0 14px;
  font-size: 14px;
  font-weight: 950;
  cursor: pointer;
  text-align: left;
  box-shadow: 0 4px 0 #17325f;
  transition: transform 0.2s var(--cm-motion), box-shadow 0.2s ease, background 0.2s ease;
}

.ai-tool-link-button.is-primary {
  grid-column: auto;
  color: #17325f;
  border-color: #17325f;
  background: linear-gradient(135deg, #ff5f4c, #ffcf4f);
  box-shadow: 0 4px 0 #17325f;
}

.ai-tool-link-button.is-primary:hover {
  background: linear-gradient(135deg, #ffcf4f, #ff5f4c);
}

.ai-tool-link-button span {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.ai-tool-link-button:hover {
  transform: translateY(-2px);
  background: linear-gradient(135deg, #ffcf4f, #ff5f4c);
  box-shadow: 0 6px 0 #17325f;
}

.ai-tool-no-link {
  grid-column: 1 / -1;
  min-height: 40px;
  border-radius: 999px;
  border: 1px dashed var(--manager-line);
  color: var(--manager-muted);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 900;
}

.ai-tools-loading,
.ai-tools-empty {
  min-height: 180px;
  padding: 24px;
  display: grid;
  place-content: center;
  gap: 8px;
  text-align: center;
  color: var(--manager-muted);
}

.ai-tools-loading strong,
.ai-tools-empty strong {
  color: var(--manager-ink);
  font-size: 18px;
}

.ai-tools-loading span,
.ai-tools-empty span {
  font-size: 14px;
  font-weight: 700;
}

.tool-panel {
  padding: 20px;
  min-height: 430px;
  display: flex;
  flex-direction: column;
  gap: 18px;
  overflow: hidden;
  position: relative;
}

.tool-panel-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 14px;
}

.tool-status-pill {
  padding: 7px 11px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.68);
  border: 1px solid var(--manager-line);
  color: var(--manager-muted);
  font-size: 12px;
  font-weight: 900;
}

.tool-status-pill.is-live {
  background: rgba(46, 117, 108, 0.12);
  color: var(--manager-accent);
  animation: toolPulse 1.4s ease-in-out infinite;
}

.tool-timer-display {
  width: 100%;
  margin: auto 0 4px;
  padding: clamp(26px, 4vw, 42px) 16px;
  border: 0;
  border-radius: 26px;
  color: #fff;
  background:
    radial-gradient(circle at 18% 18%, rgba(255,255,255,0.32), transparent 34%),
    linear-gradient(135deg, #2d211c, #2e756c 58%, #c7834b);
  box-shadow: 0 28px 80px rgba(46, 117, 108, 0.24);
  font-family: Inter, ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: clamp(56px, 9vw, 128px);
  font-weight: 900;
  line-height: 1;
  cursor: pointer;
  transition: transform 0.2s var(--cm-motion), box-shadow 0.2s ease;
}

.tool-timer-display:hover {
  transform: translateY(-2px) scale(1.01);
  box-shadow: 0 34px 96px rgba(46, 117, 108, 0.3);
}

.tool-presets {
  grid-template-columns: repeat(4, 1fr);
}

.tool-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.tool-actions > * {
  flex: 1;
}

.tool-video-config {
  display: grid;
  gap: 10px;
  padding: 12px;
  border-radius: 20px;
  background: rgba(255,255,255,0.5);
  border: 1px solid rgba(111,78,55,0.12);
}

.tool-video-config-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

.tool-video-config-head strong,
.tool-video-config-head span {
  display: block;
}

.tool-video-config-head strong {
  color: var(--manager-ink);
  font-weight: 900;
}

.tool-video-config-head span {
  margin-top: 3px;
  color: var(--manager-muted);
  font-size: 12px;
  line-height: 1.4;
}

.tool-video-config input[type="url"] {
  width: 100%;
  min-width: 0;
  color: var(--manager-ink);
  background: rgba(255, 255, 255, 0.76);
  border: 1px solid var(--manager-line);
  border-radius: 14px;
  padding: 12px 13px;
  outline: none;
}

.tool-countdown-board {
  min-height: calc(100vh - 120px);
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  gap: 14px;
  padding: clamp(12px, 2vw, 20px);
  border-radius: 28px;
  background:
    linear-gradient(135deg, rgba(255,255,255,0.9), rgba(255,255,255,0.52)),
    radial-gradient(circle at 85% 15%, rgba(47,119,109,0.16), transparent 36%),
    radial-gradient(circle at 10% 90%, rgba(201,133,78,0.16), transparent 34%);
  box-shadow: 0 24px 70px rgba(111, 78, 55, 0.14);
}

.tool-countdown-board:fullscreen {
  width: 100vw;
  height: 100vh;
  min-height: 100vh;
  border-radius: 0;
}

.tool-countdown-toolbar,
.tool-countdown-controls {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.tool-countdown-toolbar {
  padding: 10px;
  border-radius: 22px;
  background: rgba(255,255,255,0.54);
  border: 1px solid rgba(111,78,55,0.12);
}

.tool-countdown-stage {
  min-height: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
}

.tool-countdown-board.has-video .tool-countdown-stage {
  grid-template-columns: minmax(0, 1fr);
}

.tool-video-stage,
.tool-countdown-time {
  min-width: 0;
  min-height: 0;
  color: var(--manager-ink);
  background: rgba(255, 255, 255, 0.66);
  border-color: rgba(111, 78, 55, 0.16);
  text-shadow: none;
}

.tool-video-stage {
  position: relative;
  padding: clamp(12px, 2vw, 22px);
  display: grid;
  place-items: center;
  overflow: hidden;
}

.tool-video-stage iframe {
  width: 100%;
  height: 100%;
  min-height: min(68vh, 720px);
  border: 0;
  border-radius: 24px;
  background: rgba(51,35,31,0.12);
  box-shadow: 0 18px 44px rgba(77,53,40,0.13);
}

.tool-countdown-bubble {
  --timer-progress: 360deg;
  position: absolute;
  left: clamp(26px, 5vw, 74px);
  bottom: clamp(32px, 9vh, 110px);
  width: clamp(132px, 14vw, 210px);
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  align-content: center;
  gap: 4px;
  border-radius: 50%;
  color: #fff;
  background:
    radial-gradient(circle at center, rgba(44, 31, 27, 0.78) 0 56%, transparent 57%),
    conic-gradient(rgba(255,255,255,0.94) var(--timer-progress), rgba(255,255,255,0.22) 0);
  box-shadow: 0 18px 44px rgba(0,0,0,0.28), inset 0 0 0 1px rgba(255,255,255,0.32);
  text-shadow: 0 2px 10px rgba(0,0,0,0.32);
  z-index: 3;
  pointer-events: none;
}

.tool-countdown-bubble::before {
  content: "";
  position: absolute;
  inset: 10px;
  border-radius: inherit;
  border: 1px solid rgba(255,255,255,0.34);
}

.tool-countdown-bubble span {
  position: relative;
  font-size: clamp(12px, 1.1vw, 15px);
  font-weight: 900;
  letter-spacing: 0.08em;
  opacity: 0.86;
}

.tool-countdown-bubble strong {
  position: relative;
  font-size: clamp(24px, 3.2vw, 48px);
  line-height: 1;
  font-weight: 900;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.tool-video-warning {
  position: absolute;
  left: clamp(18px, 2vw, 28px);
  right: clamp(18px, 2vw, 28px);
  top: clamp(18px, 2vw, 28px);
  padding: 10px 14px;
  border-radius: 999px;
  color: #5b3726;
  background: rgba(255, 248, 235, 0.86);
  border: 1px solid rgba(201, 133, 78, 0.24);
  font-size: 12px;
  font-weight: 900;
  text-align: center;
  z-index: 4;
}

.tool-video-placeholder {
  width: min(680px, 100%);
  min-height: 260px;
  display: grid;
  place-items: center;
  align-content: center;
  gap: 8px;
  padding: 20px;
  text-align: center;
  border-radius: 22px;
  color: var(--manager-muted);
  background: rgba(255,255,255,0.48);
  border: 1px dashed rgba(111,78,55,0.18);
}

.tool-video-placeholder strong {
  color: var(--manager-ink);
}

.tool-countdown-time {
  padding: clamp(22px, 4vw, 54px);
  display: grid;
  place-items: center;
  align-content: center;
  gap: 14px;
  text-align: center;
}

.tool-countdown-time span {
  color: var(--manager-muted);
  font-weight: 900;
  letter-spacing: 0.08em;
}

.tool-countdown-time strong {
  color: var(--manager-ink);
  font-size: clamp(76px, 17vw, 240px);
  line-height: 0.95;
  font-weight: 900;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.tool-countdown-board.has-video .tool-countdown-time {
  display: none;
}

.tool-countdown-board.has-video .tool-countdown-time strong {
  font-size: clamp(44px, 6vw, 92px);
}

.timer-custom-modal {
  width: min(520px, 100%) !important;
}

.timer-custom-modal .modal-header {
  margin-bottom: 18px;
}

.timer-custom-modal h2 {
  margin: 4px 0 6px;
}

.timer-custom-modal p {
  margin: 0;
  color: var(--manager-muted);
}

.timer-modal-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.timer-modal-grid label {
  display: grid;
  gap: 7px;
  color: var(--manager-muted);
  font-size: 12px;
  font-weight: 900;
}

.timer-modal-grid input {
  width: 100%;
  min-width: 0;
  color: var(--manager-ink);
  background: rgba(255,255,255,0.76);
  border: 1px solid var(--manager-line);
  border-radius: 16px;
  padding: 14px;
  font-size: 22px;
  font-weight: 900;
  font-variant-numeric: tabular-nums;
  outline: none;
}

.timer-modal-presets {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
  margin-top: 14px;
}

.timer-modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 18px;
}

.tool-picker-stage {
  min-height: 220px;
  border-radius: 28px;
  position: relative;
  display: grid;
  place-items: center;
  overflow: hidden;
  background:
    radial-gradient(circle at 50% 50%, rgba(255,255,255,0.9), rgba(255,255,255,0.44) 46%, rgba(46,117,108,0.08));
  border: 1px solid rgba(255, 255, 255, 0.7);
}

.picker-mode-switch {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  padding: 6px;
  border-radius: 999px;
  background: rgba(255,255,255,0.5);
  border: 1px solid rgba(111,78,55,0.12);
}

.picker-mode-button {
  min-height: 40px;
  border: 0;
  border-radius: 999px;
  color: var(--manager-muted);
  background: transparent;
  font-weight: 900;
  cursor: pointer;
  transition: transform 0.2s var(--cm-motion), background 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
}

.picker-mode-button:hover {
  transform: translateY(-1px);
  color: var(--manager-ink);
}

.picker-mode-button.is-active {
  color: #fff;
  background: linear-gradient(135deg, var(--manager-accent), var(--manager-warm));
  box-shadow: 0 10px 24px rgba(111,78,55,0.16);
}

.tool-picker-stage::after {
  content: "";
  position: absolute;
  inset: auto 16% 28px;
  height: 4px;
  border-radius: 999px;
  background: linear-gradient(90deg, transparent, rgba(46,117,108,0.72), transparent);
  animation: toolPulse 1.8s ease-in-out infinite;
}

.tool-orbit {
  position: absolute;
  border-radius: 50%;
  border: 1px dashed rgba(46, 117, 108, 0.32);
  pointer-events: none;
}

.orbit-one {
  width: 190px;
  height: 190px;
  animation: toolSpin 15s linear infinite;
}

.orbit-two {
  width: 250px;
  height: 250px;
  border-color: rgba(199, 131, 75, 0.28);
  animation: toolSpin 22s linear infinite reverse;
}

.tool-picker-viewport {
  width: min(340px, calc(100% - 40px));
  height: 70px;
  margin: 0;
  border-radius: 20px;
  z-index: 1;
  border: 1px solid rgba(46, 117, 108, 0.18);
  box-shadow: 0 18px 48px rgba(77, 53, 40, 0.12);
}

.tool-picker-viewport .picker-name {
  line-height: 70px;
  font-size: clamp(24px, 4vw, 38px);
}

.tool-picker-stage.is-drawing .tool-picker-viewport {
  animation: toolPulse 0.8s ease-in-out infinite;
}

.picked-name-card {
  display: grid;
  gap: 4px;
  padding: 14px 16px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.62);
  border: 1px solid var(--manager-line);
}

.picked-name-card span {
  color: var(--manager-muted);
  font-size: 12px;
  font-weight: 900;
}

.picked-name-card strong {
  color: var(--manager-ink);
  font-size: clamp(22px, 3vw, 34px);
}

.picked-name-card.has-result {
  background: rgba(46, 117, 108, 0.12);
  border-color: rgba(46, 117, 108, 0.24);
  animation: toolRise 0.38s var(--cm-motion) both;
}

.picked-group-members {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 8px;
}

.picked-group-members span {
  padding: 6px 9px;
  border-radius: 999px;
  color: var(--manager-ink);
  background: rgba(255,255,255,0.64);
  border: 1px solid rgba(111,78,55,0.12);
  font-size: 12px;
  font-weight: 900;
}

@keyframes toolPulse {
  0%, 100% { opacity: 0.72; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.025); }
}

@keyframes toolSpin {
  to { transform: rotate(360deg); }
}

@keyframes toolRise {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 960px) {
  .teacher-tool-grid {
    grid-template-columns: 1fr;
  }

  .tool-hero-card {
    align-items: flex-start;
    flex-direction: column;
  }

  .ai-tools-control-head,
  .ai-tools-filter-row {
    grid-template-columns: 1fr;
  }

  .ai-tools-control-head {
    flex-direction: column;
  }

  .ai-tools-account-chip {
    width: 100%;
    max-width: none;
    min-width: 0;
  }

  .ai-tools-sheet-note {
    grid-template-columns: 1fr;
    align-items: start;
  }

  .ai-tools-compact-toolbar {
    grid-template-columns: minmax(180px, 260px) minmax(240px, 1fr) auto;
  }
}

/* ── Grades Table ── */
.grades-table-container {
  max-height: 480px;
  overflow-y: auto;
  border: 1px solid var(--manager-line);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.4);
}

#grades-table {
  width: 100%;
  border-collapse: collapse;
}

#grades-table th {
  background: rgba(111, 78, 55, 0.08);
  color: var(--manager-ink);
  font-weight: 800;
  position: sticky;
  top: 0;
  z-index: 2;
}

#grades-table th, #grades-table td {
  padding: 12px 14px;
  text-align: center;
  border-bottom: 1px solid var(--manager-line);
}

#grades-table tbody tr:hover {
  background: rgba(255, 255, 255, 0.5);
}

/* Banner image formatting */
.banner-card {
  position: relative;
  border-radius: var(--manager-radius);
  overflow: hidden;
  height: 100px;
  border: 1px solid var(--manager-line);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.03);
}

.banner-img {
  width: 100%; height: 100%;
  object-fit: cover; object-position: center 30%;
  display: block;
}

.banner-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(to top, rgba(45, 33, 28, 0.82) 0%, rgba(45, 33, 28, 0.1) 80%, transparent 100%);
  display: flex; flex-direction: column; justify-content: flex-end;
  padding: 10px 12px;
}

.banner-title {
  display: flex; align-items: center; gap: 6px;
  font-size: 16px; font-weight: 900; color: #fff;
}

.banner-sub {
  font-size: 10px; color: rgba(255,255,255,0.7);
  margin-top: 1px; letter-spacing: 0.5px;
}

/* ── Integrated Workspace Refinements ── */
.cm-app-shell.is-sidebar-collapsed {
  grid-template-columns: minmax(0, 1fr);
}

.sidebar-toggle-button {
  white-space: nowrap;
  background: rgba(255, 255, 255, 0.66);
  color: var(--manager-accent-2);
  border: 1px solid rgba(47, 119, 109, 0.18);
}

.teacher-avatar-slot {
  overflow: hidden;
  isolation: isolate;
}

.teacher-avatar-slot img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
}

.feature-home {
  display: grid;
  gap: 16px;
}

.feature-home-hero {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: clamp(18px, 2.4vw, 28px);
  border-radius: 26px;
  background:
    linear-gradient(135deg, rgba(255,255,255,0.82), rgba(255,255,255,0.42)),
    radial-gradient(circle at 90% 10%, rgba(47, 119, 109, 0.16), transparent 32%);
  border: 1px solid rgba(47, 119, 109, 0.16);
}

.feature-home-hero h2 {
  margin: 6px 0 8px;
  font-size: clamp(26px, 4vw, 44px);
  line-height: 1.08;
}

.feature-home-hero p {
  max-width: 720px;
  margin: 0;
  color: var(--manager-muted);
  line-height: 1.65;
}

.feature-class-summary {
  min-width: 180px;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 6px 10px;
  align-items: baseline;
  padding: 14px 16px;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.66);
  border: 1px solid rgba(111, 78, 55, 0.14);
}

.feature-class-summary strong {
  color: var(--manager-accent-2);
  font-size: 28px;
  font-weight: 900;
  line-height: 1;
  text-align: right;
}

.feature-class-summary span {
  color: var(--manager-muted);
  font-size: 13px;
  font-weight: 800;
}

.feature-launch-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
}

.feature-launch-card {
  min-height: 190px;
  padding: 20px;
  border-radius: 22px;
  display: grid;
  align-content: start;
  gap: 12px;
  text-align: left;
  color: var(--manager-ink);
  background:
    linear-gradient(160deg, rgba(255,255,255,0.78), rgba(255,255,255,0.42)),
    radial-gradient(circle at 82% 20%, rgba(201, 133, 78, 0.16), transparent 38%);
  border: 1px solid var(--manager-line);
  cursor: pointer;
  transition: transform 0.22s var(--cm-motion), box-shadow 0.22s ease, border-color 0.22s ease;
}

.feature-launch-card:hover {
  transform: translateY(-4px);
  border-color: rgba(47, 119, 109, 0.28);
  box-shadow: 0 18px 44px rgba(70, 49, 35, 0.14);
}

.feature-icon {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border-radius: 14px;
  color: #fff;
  font-weight: 900;
  background: linear-gradient(135deg, var(--manager-accent-2), var(--manager-accent));
}

.feature-launch-card strong {
  font-size: 21px;
  font-weight: 900;
}

.feature-launch-card span:last-child {
  color: var(--manager-muted);
  font-size: 14px;
  line-height: 1.55;
}

.daily-home-hero {
  align-items: flex-end;
}

.daily-quick-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.daily-workbench-grid {
  display: grid;
  grid-template-columns: minmax(280px, 0.95fr) minmax(320px, 1.25fr);
  gap: 14px;
  align-items: stretch;
}

.daily-reminders-card,
.daily-board-preview {
  padding: clamp(16px, 2vw, 22px);
  border-radius: 24px;
}

.daily-section-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
}

.daily-section-head h3 {
  margin: 5px 0 0;
  color: var(--manager-ink);
  font-size: clamp(20px, 2vw, 26px);
}

.daily-reminder-list {
  display: grid;
  gap: 10px;
}

.daily-reminder-item {
  width: 100%;
  min-height: 68px;
  padding: 12px 14px;
  border-radius: 18px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  text-align: left;
  color: var(--manager-ink);
  background: rgba(255,255,255,0.58);
  border: 1px solid rgba(111,78,55,0.12);
  cursor: pointer;
  transition: transform 0.2s var(--cm-motion), box-shadow 0.2s ease, background 0.2s ease;
}

.daily-reminder-item:hover {
  transform: translateY(-2px);
  background: rgba(255,255,255,0.82);
  box-shadow: 0 14px 34px rgba(77,53,40,0.12);
}

.daily-reminder-item span {
  color: var(--manager-muted);
  font-weight: 900;
}

.daily-reminder-item strong {
  flex-shrink: 0;
  padding: 7px 11px;
  border-radius: 999px;
  color: var(--manager-ink);
  background: rgba(111,78,55,0.08);
  font-weight: 900;
}

.daily-reminder-item.is-ok strong {
  color: #23665d;
  background: rgba(47,119,109,0.14);
}

.daily-reminder-item.is-warn strong {
  color: #8f4f19;
  background: rgba(201,133,78,0.17);
}

.daily-reminder-item.is-soft strong {
  color: #365f82;
  background: rgba(67,111,150,0.14);
}

.daily-board-preview {
  min-width: 0;
  background:
    linear-gradient(145deg, rgba(255,255,255,0.78), rgba(255,255,255,0.46)),
    radial-gradient(circle at 90% 12%, rgba(201,133,78,0.12), transparent 34%);
}

.daily-board-preview ol {
  margin: 0;
  padding-left: 22px;
  display: grid;
  gap: 8px;
  color: var(--manager-ink);
  font-weight: 800;
  line-height: 1.55;
}

.daily-board-preview li {
  overflow-wrap: anywhere;
}

.daily-empty-preview {
  min-height: 92px;
  display: grid;
  place-items: center;
  border-radius: 18px;
  color: var(--manager-muted);
  background: rgba(255,255,255,0.48);
  border: 1px dashed rgba(111,78,55,0.16);
  font-weight: 900;
}

.tool-row {
  grid-template-columns: repeat(auto-fit, minmax(72px, 1fr));
}

/* ── Integrated Exam Timer ── */
.exam-integrated-page,
.exam-editor-stack {
  display: grid;
  gap: 16px;
}

.exam-integrated-hero,
.exam-start-panel,
.exam-builder-card,
.exam-note-card,
.exam-section-card {
  padding: clamp(16px, 2vw, 22px);
  border-radius: 24px;
}

.exam-integrated-hero {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  background:
    linear-gradient(135deg, rgba(255,255,255,0.82), rgba(255,255,255,0.48)),
    radial-gradient(circle at 92% 12%, rgba(47, 119, 109, 0.16), transparent 34%);
}

.exam-integrated-hero h2,
.exam-builder-card h3,
.exam-note-card h3,
.exam-section-card h3,
.exam-board-schedule h3 {
  margin: 6px 0 12px;
}

.exam-integrated-hero p {
  margin: 0;
  color: var(--manager-muted);
  line-height: 1.65;
}

.exam-mode-actions,
.exam-board-toolbar,
.exam-section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
}

.exam-setup-grid {
  display: grid;
  grid-template-columns: minmax(230px, 300px) minmax(0, 1fr);
  gap: 16px;
  align-items: start;
}

.exam-start-panel {
  position: sticky;
  top: 18px;
  display: grid;
  gap: 16px;
}

.exam-add-schedule-btn {
  margin-top: 12px;
}

.exam-field-grid,
.exam-time-inputs {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.exam-builder-card label,
.exam-note-card label,
.exam-start-panel label {
  display: grid;
  gap: 7px;
  color: var(--manager-muted);
  font-size: 12px;
  font-weight: 900;
}

.exam-builder-card input,
.exam-note-card textarea,
.exam-start-panel input {
  width: 100%;
  min-width: 0;
  color: var(--manager-ink);
  background: rgba(255, 255, 255, 0.76);
  border: 1px solid var(--manager-line);
  border-radius: 14px;
  padding: 12px 13px;
  outline: none;
}

.exam-note-card textarea {
  resize: vertical;
  min-height: 150px;
  line-height: 1.6;
}

.cm-switch {
  width: 58px;
  height: 34px;
  display: inline-grid !important;
  place-items: center;
  cursor: pointer;
}

.cm-switch input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.cm-switch-track {
  width: 58px;
  height: 34px;
  padding: 4px;
  border-radius: 999px;
  display: block;
  background: rgba(111, 78, 55, 0.14);
  border: 1px solid rgba(111, 78, 55, 0.14);
  box-shadow: inset 0 2px 7px rgba(77, 53, 40, 0.12);
  transition: background 0.22s var(--cm-motion), border-color 0.22s ease;
}

.cm-switch-thumb {
  width: 24px;
  height: 24px;
  display: block;
  border-radius: 50%;
  background: rgba(255,255,255,0.96);
  box-shadow: 0 6px 16px rgba(77, 53, 40, 0.18);
  transition: transform 0.24s var(--cm-motion);
}

.cm-switch input:checked + .cm-switch-track {
  background: rgba(47, 119, 109, 0.72);
  border-color: rgba(47, 119, 109, 0.28);
}

.cm-switch input:checked + .cm-switch-track .cm-switch-thumb {
  transform: translateX(24px);
}

.exam-compose-grid {
  display: grid;
  grid-template-columns: minmax(260px, 0.9fr) minmax(260px, 1.1fr);
  gap: 16px;
}

.exam-schedule-list,
.exam-history-list,
.exam-mini-list {
  display: grid;
  gap: 10px;
}

.exam-schedule-item,
.history-item,
.exam-mini-item {
  min-width: 0;
  display: grid;
  gap: 8px;
  padding: 12px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.58);
  border: 1px solid rgba(111, 78, 55, 0.13);
}

.exam-schedule-item {
  grid-template-columns: 112px minmax(0, 1fr) auto;
  align-items: center;
}

.exam-schedule-time {
  display: grid;
  gap: 2px;
  padding: 8px 10px;
  border-radius: 14px;
  color: var(--manager-accent-2);
  background: rgba(47, 119, 109, 0.09);
}

.exam-schedule-time strong,
.exam-schedule-time span {
  font-variant-numeric: tabular-nums;
}

.exam-schedule-item strong,
.history-item strong {
  overflow-wrap: anywhere;
}

.exam-schedule-item span,
.history-meta {
  color: var(--manager-muted);
  font-size: 12px;
}

.exam-integrated-board {
  width: 100%;
  max-width: 100%;
  min-height: calc(100vh - 190px);
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  gap: 14px;
  padding: clamp(12px, 2vw, 20px);
  border-radius: 28px;
  background:
    linear-gradient(135deg, rgba(255,255,255,0.86), rgba(255,255,255,0.48)),
    radial-gradient(circle at 85% 15%, rgba(47,119,109,0.16), transparent 36%),
    radial-gradient(circle at 10% 90%, rgba(201,133,78,0.16), transparent 34%);
  color: var(--manager-ink);
  box-shadow: 0 24px 70px rgba(111, 78, 55, 0.14);
  box-sizing: border-box;
  overflow: hidden;
}

.exam-board-toolbar {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
  flex-wrap: wrap;
  min-width: 0;
  position: relative;
  z-index: 2;
}

.exam-board-toolbar .cm-button {
  min-width: 0;
  white-space: nowrap;
}

.exam-board-grid {
  width: 100%;
  max-width: 100%;
  min-height: 0;
  display: grid;
  grid-template-columns: minmax(220px, clamp(250px, 22vw, 320px)) minmax(0, 1fr);
  gap: 16px;
  overflow: hidden;
}

.exam-board-schedule,
.exam-board-main,
.exam-class-clock {
  background: rgba(255, 255, 255, 0.66);
  border-color: rgba(111, 78, 55, 0.16);
  color: var(--manager-ink);
  text-shadow: none;
}

.exam-board-schedule {
  min-height: 0;
  overflow: auto;
  padding: 18px;
}

.exam-mini-item {
  grid-template-columns: 70px minmax(0, 1fr);
  color: var(--manager-muted);
  background: rgba(255,255,255,0.56);
  border-color: rgba(111, 78, 55, 0.12);
}

.exam-mini-item.active {
  color: var(--manager-ink);
  background: rgba(47,119,109,0.12);
  border-color: rgba(47,119,109,0.28);
  transform: scale(1.015);
}

.exam-mini-item.past {
  opacity: 0.48;
}

.exam-board-main {
  container-type: inline-size;
  min-width: 0;
  max-width: 100%;
  display: grid;
  place-items: center;
  align-content: center;
  gap: clamp(10px, 2vh, 22px);
  padding: clamp(20px, 4cqw, 48px);
  text-align: center;
  overflow: hidden;
  box-sizing: border-box;
}

.exam-clock-small {
  max-width: 100%;
  font-size: clamp(28px, 6cqw, 54px);
  font-weight: 800;
  font-variant-numeric: tabular-nums;
  line-height: 1.05;
  overflow-wrap: anywhere;
}

.exam-board-label {
  opacity: 0.82;
  font-weight: 800;
}

.exam-board-subject {
  max-width: 100%;
  font-size: clamp(38px, 10cqw, 82px);
  font-weight: 900;
  line-height: 1.05;
  overflow-wrap: anywhere;
}

.exam-board-countdown {
  width: min(100%, 8.8em);
  max-width: 100%;
  min-width: 0;
  box-sizing: border-box;
  padding: clamp(10px, 2cqw, 18px) clamp(12px, 3cqw, 30px);
  border-radius: 26px;
  color: var(--manager-ink);
  background: rgba(255, 255, 255, 0.68);
  border: 1px solid rgba(111, 78, 55, 0.13);
  font-size: clamp(48px, 10.5cqw, 124px);
  font-weight: 900;
  line-height: 1;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
  overflow: hidden;
}

.exam-board-note {
  max-width: min(900px, 100%);
  padding: 12px 18px;
  border-radius: 18px;
  color: var(--manager-ink);
  background: rgba(255, 255, 255, 0.58);
  border: 1px solid rgba(111, 78, 55, 0.12);
  line-height: 1.7;
  overflow-wrap: anywhere;
}

.exam-class-clock {
  container-type: inline-size;
  min-height: calc(100vh - 270px);
  display: grid;
  place-items: center;
  align-content: center;
  gap: 16px;
  text-align: center;
  padding: clamp(28px, 6vw, 70px);
}

.class-time-kicker {
  font-size: clamp(16px, 2vw, 28px);
  letter-spacing: 0.18em;
  font-weight: 900;
  opacity: 0.84;
}

.exam-class-clock-time {
  max-width: 100%;
  font-size: clamp(64px, 18cqw, 220px);
  font-weight: 900;
  line-height: 0.95;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
  overflow: hidden;
}

.exam-class-clock-date {
  font-size: clamp(18px, 3vw, 36px);
  opacity: 0.84;
}

@supports (height: 100dvh) {
  .exam-integrated-board {
    min-height: calc(100dvh - 190px);
  }

  .exam-class-clock {
    min-height: calc(100dvh - 270px);
  }
}

@media (max-width: 1120px) {
  .feature-launch-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .daily-workbench-grid {
    grid-template-columns: 1fr;
  }

  .exam-setup-grid,
  .exam-board-grid,
  .tool-countdown-board.has-video .tool-countdown-stage {
    grid-template-columns: 1fr;
  }

  .exam-integrated-board {
    overflow: auto;
  }

  .exam-board-schedule {
    max-height: 220px;
  }

  .exam-board-main {
    min-height: min(56vh, 560px);
  }

  .exam-start-panel {
    position: static;
  }
}

@media (max-width: 760px) {
  .feature-home-hero,
  .exam-integrated-hero {
    align-items: flex-start;
    flex-direction: column;
  }

  .feature-launch-grid,
  .teacher-entry-options,
  .exam-compose-grid {
    grid-template-columns: 1fr;
  }

  .teacher-entry-head h2 {
    font-size: 30px;
  }

  .teacher-entry-card {
    min-height: 0;
  }

  .exam-schedule-item {
    grid-template-columns: 1fr;
  }

  .exam-integrated-board {
    min-height: calc(100vh - 140px);
    padding: 10px;
    border-radius: 20px;
  }

  .exam-board-toolbar {
    justify-content: center;
  }

  .exam-board-main {
    min-height: 420px;
    padding: clamp(18px, 6cqw, 34px);
  }

  .exam-board-countdown,
  .exam-class-clock-time {
    white-space: nowrap;
    word-break: normal;
  }

  .tool-video-config-head {
    align-items: flex-start;
  }

  .daily-quick-actions {
    width: 100%;
    justify-content: stretch;
  }

  .daily-quick-actions .cm-button,
  .daily-section-head .cm-button {
    flex: 1;
  }
}

/* ── Teacher-first simplified liquid glass shell ── */
body.light-mode {
  --manager-bg: var(--color-background, #F7F4EF);
  --manager-ink: var(--color-text-primary, #3E2723);
  --manager-muted: var(--color-text-secondary, #795C54);
  --manager-glass: var(--color-glass-bg, rgba(255, 255, 255, 0.6));
  --manager-line: var(--color-glass-border, rgba(111, 78, 55, 0.15));
  --manager-accent: var(--color-accent, #6F4E37);
  --manager-shadow: 0 8px 32px rgba(111, 78, 55, 0.08);
}

body.cm-theme,
body.light-mode {
  background-color: var(--color-background, #F7F4EF) !important;
  background-image:
    linear-gradient(115deg, rgba(255, 255, 255, 0.56), transparent 24%, rgba(111, 78, 55, 0.08) 52%, transparent 82%),
    radial-gradient(circle at 12% 8%, rgba(255, 255, 255, 0.72), transparent 28vw),
    radial-gradient(circle at 92% 18%, rgba(111, 78, 55, 0.12), transparent 26vw),
    var(--liquid-bg-image, url('https://github.com/chunsheng612/FunFun.AI-Website/blob/main/ai-tools-bg-light.png?raw=true')) !important;
  background-size: cover !important;
  background-position: center !important;
  background-attachment: fixed !important;
}

.cm-sidebar,
.cm-main,
.cm-card,
.modal-card,
.current-class-button,
.class-switcher-card,
.settings-section,
.storage-card {
  background-color: var(--color-glass-bg, rgba(255, 255, 255, 0.6)) !important;
  border: 1px solid var(--color-glass-border, rgba(111, 78, 55, 0.15)) !important;
  box-shadow: 0 8px 32px rgba(111, 78, 55, 0.08) !important;
  backdrop-filter: blur(16px) saturate(160%) !important;
  -webkit-backdrop-filter: blur(16px) saturate(160%) !important;
}

.cm-button,
.cm-action,
.btn,
.current-class-button,
.class-switcher-card button {
  border-radius: 999px !important;
  background: var(--color-input-bg, rgba(255, 255, 255, 0.8)) !important;
  border: 1px solid var(--color-glass-border, rgba(111, 78, 55, 0.15)) !important;
  color: var(--color-text-primary, #3E2723) !important;
  box-shadow:
    inset 0 1px 0 var(--color-button-shadow-1, rgba(255, 255, 255, 0.8)),
    0 4px 14px rgba(111, 78, 55, 0.06) !important;
  transition: transform 0.3s var(--anim--hover-ease, cubic-bezier(0.25, 1, 0.5, 1)),
    background 0.3s ease,
    border-color 0.3s ease,
    box-shadow 0.3s ease !important;
}

.cm-button:hover,
.cm-action:hover,
.btn:hover,
.current-class-button:hover {
  background: var(--color-glass-hover, rgba(255, 255, 255, 0.9)) !important;
  border-color: var(--color-accent, #6F4E37) !important;
  transform: translateY(-2px);
  box-shadow: 0 8px 22px rgba(111, 78, 55, 0.12) !important;
}

.cm-button.cm-primary,
.btn.primary,
.cm-nav-link.is-active {
  color: #fff !important;
  background: linear-gradient(135deg, var(--color-accent, #6F4E37), #967056) !important;
  border-color: rgba(255, 255, 255, 0.38) !important;
}

.current-class-button {
  width: 100%;
  min-height: 112px;
  display: grid;
  align-content: center;
  justify-items: start;
  gap: 5px;
  padding: 16px !important;
  text-align: left;
  border-radius: 20px !important;
  cursor: pointer;
}

.current-class-button span {
  color: var(--manager-muted);
  font-size: 12px;
  font-weight: 800;
}

.current-class-button strong {
  color: var(--manager-ink);
  font-size: 22px;
  line-height: 1.15;
  overflow-wrap: anywhere;
}

.current-class-button small {
  color: var(--manager-muted);
  font-size: 12px;
  font-weight: 700;
}

.cm-sidebar .rail-section-title,
.cm-sidebar .cm-section-label {
  margin-top: 4px;
}

.simplified-home {
  min-height: calc(100vh - 190px);
  align-content: start;
}

.simplified-home .feature-home-hero {
  min-height: 150px;
}

.simplified-home .feature-launch-grid {
  grid-template-columns: repeat(5, minmax(150px, 1fr));
}

.simplified-home .feature-launch-card {
  min-height: 210px;
}

.first-use-home {
  min-height: calc(100vh - 190px);
  align-content: center;
}

.first-use-panel {
  max-width: 760px;
  margin: 0 auto;
}

.teacher-entry-home {
  align-content: center;
}

.teacher-entry-panel {
  width: min(980px, 100%);
  margin: 0 auto;
  display: grid;
  gap: 18px;
}

.teacher-entry-head {
  display: flex;
  justify-content: space-between;
  gap: 18px;
}

.teacher-entry-head h2 {
  margin: 6px 0 8px;
  font-size: 38px;
  line-height: 1.08;
}

.teacher-entry-head p {
  max-width: 680px;
  margin: 0;
  color: var(--manager-muted);
  line-height: 1.65;
}

.teacher-entry-options {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.teacher-entry-card {
  min-height: 260px;
  display: grid;
  align-content: start;
  gap: 12px;
  text-align: left;
  padding: 20px;
  border-radius: 18px;
  border: 1px solid rgba(23, 50, 95, 0.14);
  background: rgba(255, 255, 255, 0.72);
  color: var(--manager-text);
  box-shadow: 0 18px 48px rgba(23, 50, 95, 0.12);
  cursor: pointer;
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}

.teacher-entry-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 22px 56px rgba(23, 50, 95, 0.16);
  border-color: rgba(47, 119, 109, 0.32);
}

.teacher-entry-card.is-guest {
  background:
    linear-gradient(160deg, rgba(255, 248, 215, 0.94), rgba(255, 255, 255, 0.68)),
    radial-gradient(circle at 92% 12%, rgba(228, 86, 58, 0.18), transparent 34%);
}

.teacher-entry-card.is-google {
  background:
    linear-gradient(160deg, rgba(230, 247, 255, 0.94), rgba(255, 255, 255, 0.7)),
    radial-gradient(circle at 90% 10%, rgba(47, 119, 109, 0.2), transparent 34%);
}

.teacher-entry-tag {
  width: fit-content;
  padding: 5px 10px;
  border-radius: 999px;
  background: rgba(23, 50, 95, 0.09);
  color: var(--manager-accent-2);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0;
}

.teacher-entry-card strong {
  font-size: 24px;
  line-height: 1.2;
}

.teacher-entry-card p {
  margin: 0;
  color: var(--manager-text);
  line-height: 1.58;
}

.teacher-entry-card small {
  display: block;
  color: var(--manager-muted);
  line-height: 1.5;
}

.teacher-entry-card.is-guest small {
  color: #a23a28;
  font-weight: 800;
}

.teacher-entry-note {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  color: var(--manager-muted);
  line-height: 1.6;
  padding: 0 2px;
}

.teacher-entry-note strong {
  color: var(--manager-accent-2);
}

.modal-title-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 18px;
}

.class-picker-modal,
.settings-modal {
  width: min(760px, 100%);
}

.class-switcher-list {
  display: grid;
  gap: 10px;
  max-height: min(56vh, 520px);
  overflow: auto;
  padding-right: 4px;
}

.class-switcher-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 14px;
  align-items: center;
  padding: 14px;
  border-radius: 18px;
}

.class-switcher-card.is-current {
  border-color: rgba(47, 119, 109, 0.32) !important;
  background: rgba(255, 255, 255, 0.76) !important;
}

.class-switcher-card strong {
  display: block;
  color: var(--manager-ink);
  font-size: 18px;
  font-weight: 900;
}

.class-switcher-card span {
  color: var(--manager-muted);
  font-size: 13px;
}

.class-switcher-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.modal-footer-actions {
  justify-content: flex-end;
  margin-top: 18px;
}

.settings-section {
  display: grid;
  gap: 12px;
  padding: 16px;
  border-radius: 20px;
  margin-bottom: 14px;
}

.settings-section h3 {
  margin: 0;
  color: var(--manager-ink);
  font-size: 17px;
}

.settings-section p {
  margin: 0;
  color: var(--manager-muted);
  line-height: 1.6;
}

.settings-actions-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.settings-file-button {
  cursor: pointer;
  text-align: center;
}

.settings-file-button input {
  display: none;
}

.settings-profile-row {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 12px;
  align-items: center;
}

.settings-avatar {
  width: 52px;
  height: 52px;
  border-radius: 18px;
  display: grid;
  place-items: center;
  color: #fff;
  font-size: 22px;
  font-weight: 900;
  background: linear-gradient(135deg, var(--manager-accent), var(--manager-warm));
}

.storage-card {
  display: grid;
  gap: 10px;
  padding: 14px;
  border-radius: 18px;
}

.storage-row {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  color: var(--manager-muted);
  font-weight: 800;
}

.storage-row strong {
  color: var(--manager-ink);
}

.storage-meter {
  height: 10px;
  overflow: hidden;
  border-radius: 999px;
  background: rgba(111, 78, 55, 0.11);
}

.storage-meter span {
  display: block;
  height: 100%;
  min-width: 4px;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--manager-accent-2), var(--manager-warm));
}

@media (max-width: 1180px) {
  .simplified-home .feature-launch-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 760px) {
  .simplified-home {
    align-content: start;
  }

  .simplified-home .feature-launch-grid,
  .settings-actions-grid,
  .class-switcher-card,
  .settings-profile-row {
    grid-template-columns: 1fr;
  }

  .class-switcher-actions,
  .settings-profile-row .cm-button {
    justify-content: stretch;
  }

  .class-switcher-actions .cm-button,
  .settings-profile-row .cm-button {
    width: 100%;
  }

  .ai-tools-control-bar {
    padding: 10px;
  }

  .ai-tools-compact-toolbar {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .ai-tools-refresh-button {
    width: 100%;
  }

  .ai-tools-card-grid {
    grid-template-columns: 1fr;
  }

  .ai-tool-card-actions {
    grid-template-columns: 1fr;
  }

}

/* ── Refined homework workflow ── */
.homework-page {
  display: grid;
  gap: 16px;
}

.homework-hero,
.homework-detail-hero {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 18px;
  padding: clamp(18px, 2.4vw, 28px);
  border-radius: 26px;
}

.homework-hero h2,
.homework-detail-hero h2 {
  margin: 6px 0 8px;
  font-size: clamp(26px, 4vw, 42px);
  line-height: 1.08;
}

.homework-hero p,
.homework-detail-hero p {
  margin: 0;
  color: var(--manager-muted);
  line-height: 1.65;
}

.homework-actions-row {
  display: flex;
  gap: 10px;
  justify-content: flex-end;
  align-items: center;
  flex-wrap: wrap;
}

#homework-grid {
  grid-template-columns: repeat(auto-fill, minmax(310px, 1fr));
  gap: 16px;
}

.homework-card {
  min-height: 230px;
  padding: 18px;
  display: grid;
  gap: 14px;
  text-align: left;
  color: var(--manager-ink);
  cursor: pointer;
  border-radius: 24px;
}

.homework-card h3 {
  margin: 0;
  font-size: 20px;
  line-height: 1.35;
  overflow-wrap: anywhere;
}

.homework-card-top,
.homework-card-footer {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  align-items: center;
}

.homework-card-date,
.homework-card-alert {
  min-height: 28px;
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 900;
}

.homework-card-date {
  color: var(--manager-muted);
  background: rgba(111, 78, 55, 0.08);
}

.homework-card-alert.has-issues {
  color: #9b4f18;
  background: rgba(201, 133, 78, 0.14);
}

.homework-card-alert.is-clear {
  color: #1f6f62;
  background: rgba(47, 119, 109, 0.12);
}

.homework-progress-track {
  height: 10px;
  overflow: hidden;
  border-radius: 999px;
  background: rgba(111, 78, 55, 0.1);
}

.homework-progress-track i {
  display: block;
  height: 100%;
  min-width: 4px;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--manager-accent-2), var(--manager-warm));
}

.homework-card-footer {
  color: var(--manager-muted);
  font-size: 13px;
  font-weight: 800;
}

.status-summary,
.homework-status-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
}

.status-box {
  min-height: 54px;
  display: grid;
  gap: 4px;
  padding: 9px 10px;
  border-radius: 16px;
  border: 1px solid rgba(111, 78, 55, 0.1);
  background: rgba(255, 255, 255, 0.58);
}

.status-box span {
  color: var(--manager-muted);
  font-size: 12px;
  font-weight: 800;
}

.status-box strong {
  color: var(--manager-ink);
  font-size: 20px;
  line-height: 1;
}

.status-pending { border-color: rgba(155, 79, 24, 0.18); }
.status-submitted { border-color: rgba(111, 78, 55, 0.18); }
.status-correction { border-color: rgba(169, 67, 56, 0.2); }
.status-completed { border-color: rgba(47, 119, 109, 0.2); }

.homework-progress-box {
  min-width: 180px;
  padding: 16px;
  display: grid;
  gap: 8px;
  border-radius: 22px;
  background: rgba(255,255,255,0.64);
  border: 1px solid rgba(111, 78, 55, 0.12);
}

.homework-progress-box strong {
  color: var(--manager-accent-2);
  font-size: 42px;
  line-height: 1;
}

.homework-progress-box span {
  color: var(--manager-muted);
  font-weight: 900;
}

.homework-student-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 12px;
}

.homework-student-tile {
  min-height: 132px;
  padding: 14px;
  display: grid;
  align-content: center;
  gap: 8px;
  border-radius: 20px;
  border: 1px solid rgba(111, 78, 55, 0.12);
  background: rgba(255,255,255,0.6);
  box-shadow: 0 8px 24px rgba(111, 78, 55, 0.08);
}

.homework-student-id {
  color: var(--manager-accent);
  font-size: 28px;
  font-weight: 900;
  line-height: 1;
}

.homework-student-name {
  color: var(--manager-ink);
  font-size: 16px;
  font-weight: 900;
  overflow-wrap: anywhere;
}

.homework-status-pill {
  width: fit-content;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(111, 78, 55, 0.08);
  color: var(--manager-muted);
  font-size: 12px;
  font-weight: 900;
}

.homework-student-tile.s-completed {
  background: rgba(47, 119, 109, 0.13);
  border-color: rgba(47, 119, 109, 0.24);
  color: var(--manager-ink);
}

.homework-student-tile.s-submitted {
  background: rgba(111, 78, 55, 0.12);
  border-color: rgba(111, 78, 55, 0.22);
  color: var(--manager-ink);
}

.homework-student-tile.s-needs_correction {
  background: rgba(201, 133, 78, 0.15);
  border-color: rgba(201, 133, 78, 0.28);
  color: var(--manager-ink);
}

.homework-student-tile.s-pending {
  background: rgba(255,255,255,0.62);
  border-color: rgba(111, 78, 55, 0.16);
  color: var(--manager-ink);
}

.homework-empty,
.task-board-empty {
  grid-column: 1 / -1;
  padding: 32px;
  text-align: center;
  border-radius: 24px;
}

.homework-empty h3,
.task-board-empty h3 {
  margin: 0 0 8px;
  font-size: 22px;
}

.homework-empty p,
.task-board-empty p {
  margin: 0 0 16px;
  color: var(--manager-muted);
}

.task-board-modal {
  width: min(1180px, 100%) !important;
}

.task-board-modal.is-presenting {
  position: fixed;
  inset: 0;
  width: 100vw !important;
  height: 100vh !important;
  max-height: none;
  border-radius: 0;
  padding: clamp(14px, 2vw, 28px);
  overflow: hidden;
  background:
    linear-gradient(135deg, rgba(255,255,255,0.94), rgba(255,255,255,0.62)),
    radial-gradient(circle at 88% 10%, rgba(47,119,109,0.14), transparent 34%),
    radial-gradient(circle at 10% 88%, rgba(201,133,78,0.2), transparent 36%) !important;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
}

.task-board-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 18px;
}

.task-board-header-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.task-board-header h2 {
  margin: 4px 0 6px;
  font-size: 30px;
}

.task-board-header p {
  margin: 0;
  color: var(--manager-muted);
}

.task-board-grid {
  grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
  max-height: min(62vh, 560px);
  overflow: auto;
  padding-right: 4px;
  align-items: stretch;
}

.task-board-presentation {
  min-height: 0;
  height: 100%;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  gap: clamp(12px, 1.6vw, 18px);
}

.task-presentation-controls {
  width: min(820px, 100%);
  margin: 0 auto;
  padding: 8px;
  display: grid;
  grid-template-columns: minmax(112px, auto) minmax(0, 1fr) minmax(112px, auto);
  align-items: center;
  gap: 10px;
  border-radius: 999px;
  border: 1px solid rgba(111,78,55,0.12);
  background: rgba(255,255,255,0.58);
  box-shadow: 0 12px 34px rgba(77,53,40,0.1);
}

.task-presentation-controls .btn {
  min-height: 44px;
  border-radius: 999px;
}

.task-presentation-count {
  justify-self: center;
  min-width: 84px;
  padding: 8px 16px;
  border-radius: 999px;
  color: var(--manager-ink);
  background: rgba(111,78,55,0.08);
  font-weight: 900;
  text-align: center;
}

.task-board-modal.is-presenting .task-board-header {
  width: min(1280px, 100%);
  margin: 0 auto clamp(10px, 1.5vw, 18px);
  padding: 10px 12px 10px 18px;
  border-radius: 24px;
  background: rgba(255,255,255,0.48);
  border: 1px solid rgba(111,78,55,0.1);
}

.task-board-modal.is-presenting .task-board-header h2 {
  font-size: clamp(24px, 2.4vw, 36px);
}

.task-board-modal.is-presenting .task-board-header p {
  max-width: 740px;
  display: none;
}

.task-board-modal.is-presenting .task-board-slide {
  width: min(1280px, 100%);
  min-height: 0;
  height: 100%;
  margin: 0 auto;
  padding: clamp(18px, 2.4vw, 34px);
  border-radius: clamp(24px, 2.6vw, 34px);
  gap: clamp(14px, 1.8vw, 24px);
  animation: taskSlideIn 0.38s var(--cm-motion) both;
}

@keyframes taskSlideIn {
  from {
    opacity: 0;
    transform: translateY(12px) scale(0.985);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.task-board-modal.is-presenting .task-board-item-head h3 {
  font-size: clamp(32px, 4.5vw, 72px);
  line-height: 1.08;
}

.task-board-modal.is-presenting .task-board-item-head small {
  font-size: clamp(13px, 1.15vw, 17px);
}

.task-board-modal.is-presenting .task-board-total {
  width: clamp(132px, 13vw, 188px);
  min-height: clamp(112px, 11vw, 164px);
  border-radius: clamp(24px, 2.4vw, 34px);
}

.task-board-modal.is-presenting .task-board-total strong {
  font-size: clamp(56px, 7vw, 106px);
}

.task-board-modal.is-presenting .task-board-total span {
  font-size: clamp(13px, 1.25vw, 18px);
}

.task-board-modal.is-presenting .task-status-column {
  padding: clamp(14px, 1.6vw, 22px);
  border-radius: clamp(22px, 2vw, 30px);
}

.task-board-modal.is-presenting .task-column-head {
  min-height: 50px;
}

.task-board-modal.is-presenting .task-column-head strong {
  font-size: clamp(22px, 2.2vw, 34px);
}

.task-board-modal.is-presenting .task-column-head span {
  font-size: clamp(13px, 1.15vw, 17px);
  padding: 7px 12px;
}

.task-board-modal.is-presenting .task-student-list {
  grid-template-columns: repeat(auto-fill, minmax(56px, 1fr));
  gap: clamp(6px, 0.75vw, 10px);
  padding-right: 4px;
}

.task-board-modal.is-presenting .student-task-chip.is-seat-only {
  min-height: clamp(48px, 5vw, 72px);
  border-radius: clamp(14px, 1.3vw, 20px);
}

.task-board-modal.is-presenting .task-student-seat {
  min-width: 0;
  font-size: clamp(30px, 4.2vw, 58px);
}

.task-board-modal.is-presenting .task-student-name {
  font-size: clamp(20px, 2.1vw, 32px);
}

.task-board-modal.is-presenting .task-student-status {
  font-size: clamp(12px, 1vw, 15px);
}

.task-board-item {
  min-height: 320px;
  padding: 18px;
  border-radius: 24px;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto;
  gap: 14px;
  background:
    linear-gradient(135deg, rgba(255,255,255,0.82), rgba(255,255,255,0.52)),
    radial-gradient(circle at 88% 16%, rgba(201,133,78,0.12), transparent 38%) !important;
}

.task-board-item.is-all-clear {
  background:
    linear-gradient(135deg, rgba(255,255,255,0.84), rgba(240,253,250,0.62)),
    radial-gradient(circle at 88% 16%, rgba(47,119,109,0.14), transparent 38%) !important;
}

.task-board-item-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
}

.task-board-item-head h3 {
  margin: 0;
  color: var(--manager-ink);
  font-size: clamp(22px, 2.2vw, 34px);
  line-height: 1.35;
  overflow-wrap: anywhere;
}

.task-board-item-head small {
  display: block;
  margin-top: 4px;
  color: var(--manager-muted);
  font-size: 13px;
  font-weight: 800;
}

.task-board-total {
  width: 116px;
  min-height: 96px;
  flex-shrink: 0;
  display: grid;
  place-items: center;
  align-content: center;
  border-radius: 24px;
  border: 1px solid rgba(111,78,55,0.12);
  background: rgba(255,255,255,0.66);
}

.task-board-total strong {
  color: #9b4f18;
  font-size: clamp(42px, 4vw, 62px);
  line-height: 0.95;
  font-weight: 900;
}

.task-board-total span {
  color: var(--manager-muted);
  font-size: 13px;
  font-weight: 900;
}

.task-board-total.is-clear strong {
  color: var(--manager-accent-2);
}

.task-board-columns {
  min-height: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 12px;
}

.task-status-column {
  min-width: 0;
  min-height: 0;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  gap: 10px;
  padding: 12px;
  border-radius: 20px;
  background: rgba(255,255,255,0.5);
  border: 1px solid rgba(111,78,55,0.1);
}

.pending-column {
  border-color: rgba(201, 133, 78, 0.24);
}

.correction-column {
  border-color: rgba(169, 67, 56, 0.2);
}

.task-column-head {
  min-height: 42px;
  display: flex;
  justify-content: space-between;
  gap: 8px;
  align-items: center;
}

.task-column-head strong {
  color: var(--manager-ink);
  font-size: clamp(16px, 1.7vw, 22px);
  font-weight: 900;
}

.task-column-head span {
  flex-shrink: 0;
  padding: 4px 9px;
  border-radius: 999px;
  color: var(--manager-muted);
  background: rgba(111,78,55,0.08);
  font-size: 12px;
  font-weight: 900;
}

.task-student-list {
  min-height: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(58px, 1fr));
  gap: 8px;
  align-content: start;
  overflow: auto;
}

.student-task-chip {
  min-height: 72px;
  min-width: 0;
  padding: 10px 11px;
  display: grid;
  align-content: center;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 3px 8px;
  text-align: left;
  border: 1px solid rgba(111,78,55,0.13);
  border-radius: 16px;
  background: rgba(255,255,255,0.7);
  cursor: pointer;
  transform-origin: center;
  transition: transform 0.22s var(--cm-motion), background 0.22s ease, box-shadow 0.22s ease;
}

.student-task-chip.is-seat-only {
  min-height: 56px;
  padding: 0 6px;
  display: grid;
  place-items: center;
  grid-template-columns: 1fr;
  text-align: center;
  touch-action: manipulation;
}

.task-student-seat {
  color: var(--manager-accent);
  font-size: clamp(20px, 2vw, 28px);
  line-height: 1;
  font-weight: 900;
  grid-row: span 2;
  align-self: center;
  min-width: 32px;
}

.student-task-chip.is-seat-only .task-student-seat {
  grid-row: auto;
  align-self: center;
  justify-self: center;
  min-width: 0;
  font-size: clamp(24px, 2.6vw, 36px);
  letter-spacing: 0;
  font-variant-numeric: tabular-nums;
}

.task-board-modal.is-presenting .student-task-chip.is-seat-only .task-student-seat {
  font-size: clamp(30px, 4.2vw, 58px);
}

.task-student-name {
  color: var(--manager-ink);
  font-size: clamp(15px, 1.45vw, 20px);
  line-height: 1.2;
  font-weight: 900;
  overflow-wrap: anywhere;
}

.task-student-status {
  color: var(--manager-muted);
  font-size: 11px;
  font-weight: 900;
}

.student-task-chip.is-pending {
  background: rgba(255, 145, 0, 0.08) !important;
  color: #c97d16 !important;
  border: 2px solid rgba(255, 145, 0, 0.28) !important;
}
.student-task-chip.is-pending .task-student-seat {
  color: #c97d16 !important;
}

.student-task-chip.is-correction {
  background: rgba(255, 75, 75, 0.08) !important;
  color: #d32f2f !important;
  border: 2px solid rgba(255, 75, 75, 0.28) !important;
}
.student-task-chip.is-correction .task-student-seat {
  color: #d32f2f !important;
}

.student-task-chip:hover {
  transform: translateY(-2px) scale(1.02);
  background: rgba(255,255,255,0.92) !important;
  box-shadow: 0 10px 24px rgba(111,78,55,0.12);
}

.student-task-chip:active {
  transform: translateY(1px) scale(0.96);
}

.task-empty-list {
  min-height: 72px;
  display: grid;
  place-items: center;
  border-radius: 16px;
  color: var(--manager-muted);
  background: rgba(255,255,255,0.42);
  border: 1px dashed rgba(111,78,55,0.14);
  font-weight: 900;
}

.task-clear-banner {
  min-height: 42px;
  display: grid;
  place-items: center;
  border-radius: 16px;
  color: var(--manager-accent-2);
  background: rgba(47,119,109,0.1);
  font-weight: 900;
}

/* Stronger homework status color system */
.status-box.status-pending {
  background: rgba(201, 133, 78, 0.13);
  border-color: rgba(201, 133, 78, 0.28);
}

.status-box.status-pending strong,
.homework-student-tile.s-pending .homework-student-id {
  color: #a95f1f;
}

.status-box.status-submitted {
  background: rgba(67, 111, 150, 0.13);
  border-color: rgba(67, 111, 150, 0.28);
}

.status-box.status-submitted strong,
.homework-student-tile.s-submitted .homework-student-id {
  color: #3f6f96;
}

.status-box.status-correction {
  background: rgba(183, 75, 63, 0.12);
  border-color: rgba(183, 75, 63, 0.28);
}

.status-box.status-correction strong,
.homework-student-tile.s-needs_correction .homework-student-id {
  color: #a94338;
}

.status-box.status-completed {
  background: rgba(47, 119, 109, 0.13);
  border-color: rgba(47, 119, 109, 0.28);
}

.status-box.status-completed strong,
.homework-student-tile.s-completed .homework-student-id {
  color: #2f776d;
}

.homework-student-tile.s-pending {
  background:
    linear-gradient(135deg, rgba(255,255,255,0.74), rgba(255,247,237,0.78)),
    radial-gradient(circle at 88% 18%, rgba(201,133,78,0.16), transparent 42%);
  border-color: rgba(201, 133, 78, 0.3);
}

.homework-student-tile.s-submitted {
  background:
    linear-gradient(135deg, rgba(255,255,255,0.74), rgba(239,247,255,0.78)),
    radial-gradient(circle at 88% 18%, rgba(67,111,150,0.16), transparent 42%);
  border-color: rgba(67, 111, 150, 0.3);
}

.homework-student-tile.s-needs_correction {
  background:
    linear-gradient(135deg, rgba(255,255,255,0.74), rgba(255,241,240,0.78)),
    radial-gradient(circle at 88% 18%, rgba(183,75,63,0.16), transparent 42%);
  border-color: rgba(183, 75, 63, 0.3);
}

.homework-student-tile.s-completed {
  background:
    linear-gradient(135deg, rgba(255,255,255,0.74), rgba(240,253,250,0.78)),
    radial-gradient(circle at 88% 18%, rgba(47,119,109,0.16), transparent 42%);
  border-color: rgba(47, 119, 109, 0.3);
}

.homework-student-tile.s-pending .homework-status-pill {
  color: #8f4f19;
  background: rgba(201, 133, 78, 0.16);
}

.homework-student-tile.s-submitted .homework-status-pill {
  color: #365f82;
  background: rgba(67, 111, 150, 0.16);
}

.homework-student-tile.s-needs_correction .homework-status-pill {
  color: #943a31;
  background: rgba(183, 75, 63, 0.16);
}

.homework-student-tile.s-completed .homework-status-pill {
  color: #23665d;
  background: rgba(47, 119, 109, 0.16);
}

@media (max-width: 760px) {
  .homework-hero,
  .homework-detail-hero,
  .task-board-header,
  .task-board-item-head {
    align-items: flex-start;
    flex-direction: column;
  }

  .status-summary,
  .homework-status-strip {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .homework-actions-row,
  .homework-actions-row .btn {
    width: 100%;
  }

  .task-board-columns {
    grid-template-columns: 1fr;
  }

  .task-board-total {
    width: 100%;
  }
}

@media (max-width: 760px) {
  .task-board-modal.is-presenting {
    padding: 10px;
  }

  .task-board-modal.is-presenting .task-board-header {
    gap: 10px;
    margin-bottom: 10px;
    padding: 12px;
  }

  .task-board-modal.is-presenting .task-board-header p {
    display: none;
  }

  .task-presentation-controls {
    grid-template-columns: 1fr auto 1fr;
    gap: 6px;
    padding: 6px;
  }

  .task-presentation-controls .btn {
    min-height: 40px;
    padding-inline: 12px;
  }

  .task-board-modal.is-presenting .task-board-slide {
    padding: 14px;
    border-radius: 24px;
  }

  .task-board-modal.is-presenting .task-board-item-head {
    gap: 10px;
  }

  .task-board-modal.is-presenting .task-board-total {
    min-height: 90px;
  }

  .task-board-modal.is-presenting .task-student-list {
    grid-template-columns: repeat(auto-fill, minmax(128px, 1fr));
  }
}

/* Fix bottom clipping of panels in the workspace */
.cm-main {
  overflow: visible !important;
}

/* Hide Zhuyin track when toggle switch is active */
.hide-zy-track .bb-zhuyin-track,
.hide-zy-track .bb-zhuyin-track * {
  visibility: hidden !important;
  opacity: 0 !important;
  pointer-events: none !important;
}

/* Homework Correction Highlight feature */
@keyframes pulse-glow-correction {
  0% {
    box-shadow: 0 0 10px rgba(255, 23, 68, 0.4), 0 8px 24px rgba(111, 78, 55, 0.08);
    transform: scale(1);
  }
  50% {
    box-shadow: 0 0 24px rgba(255, 23, 68, 0.95), 0 8px 28px rgba(255, 23, 68, 0.3);
    transform: scale(1.05);
  }
  100% {
    box-shadow: 0 0 10px rgba(255, 23, 68, 0.4), 0 8px 24px rgba(111, 78, 55, 0.08);
    transform: scale(1);
  }
}

@keyframes pulse-glow-pending {
  0% {
    box-shadow: 0 0 10px rgba(255, 145, 0, 0.4), 0 8px 24px rgba(111, 78, 55, 0.08);
    transform: scale(1);
  }
  50% {
    box-shadow: 0 0 24px rgba(255, 145, 0, 0.95), 0 8px 28px rgba(255, 145, 0, 0.3);
    transform: scale(1.05);
  }
  100% {
    box-shadow: 0 0 10px rgba(255, 145, 0, 0.4), 0 8px 24px rgba(111, 78, 55, 0.08);
    transform: scale(1);
  }
}

@keyframes pulse-glow-submitted {
  0% {
    box-shadow: 0 0 10px rgba(41, 121, 255, 0.4), 0 8px 24px rgba(111, 78, 55, 0.08);
    transform: scale(1);
  }
  50% {
    box-shadow: 0 0 24px rgba(41, 121, 255, 0.95), 0 8px 28px rgba(41, 121, 255, 0.3);
    transform: scale(1.05);
  }
  100% {
    box-shadow: 0 0 10px rgba(41, 121, 255, 0.4), 0 8px 24px rgba(111, 78, 55, 0.08);
    transform: scale(1);
  }
}

@keyframes pulse-glow-completed {
  0% {
    box-shadow: 0 0 10px rgba(0, 230, 118, 0.4), 0 8px 24px rgba(111, 78, 55, 0.08);
    transform: scale(1);
  }
  50% {
    box-shadow: 0 0 24px rgba(0, 230, 118, 0.95), 0 8px 28px rgba(0, 230, 118, 0.3);
    transform: scale(1.05);
  }
  100% {
    box-shadow: 0 0 10px rgba(0, 230, 118, 0.4), 0 8px 24px rgba(111, 78, 55, 0.08);
    transform: scale(1);
  }
}

/* 1. s-needs_correction (待訂正) - Crimson Red */
.highlight-correction-active .homework-student-tile.s-needs_correction {
  background: linear-gradient(135deg, #ff1744, #d50000) !important;
  border-color: #ff1744 !important;
  border-width: 2px !important;
  color: #ffffff !important;
  animation: pulse-glow-correction 1.8s infinite ease-in-out;
  transition: all 0.3s ease;
  z-index: 10;
}
.highlight-correction-active .homework-student-tile.s-needs_correction .homework-student-id,
.highlight-correction-active .homework-student-tile.s-needs_correction .homework-student-name,
.highlight-correction-active .homework-student-tile.s-needs_correction .homework-status-pill {
  color: #ffffff !important;
}
.highlight-correction-active .homework-student-tile.s-needs_correction .homework-status-pill {
  background: rgba(255, 255, 255, 0.28) !important;
  border: 1px solid rgba(255, 255, 255, 0.4) !important;
  font-weight: 900;
}

/* 2. s-pending (未繳交) - Vibrant Orange */
.highlight-correction-active .homework-student-tile.s-pending {
  background: linear-gradient(135deg, #ff9100, #ff6d00) !important;
  border-color: #ff9100 !important;
  border-width: 2px !important;
  color: #ffffff !important;
  animation: pulse-glow-pending 1.8s infinite ease-in-out;
  transition: all 0.3s ease;
  z-index: 10;
}
.highlight-correction-active .homework-student-tile.s-pending .homework-student-id,
.highlight-correction-active .homework-student-tile.s-pending .homework-student-name,
.highlight-correction-active .homework-student-tile.s-pending .homework-status-pill {
  color: #ffffff !important;
}
.highlight-correction-active .homework-student-tile.s-pending .homework-status-pill {
  background: rgba(255, 255, 255, 0.28) !important;
  border: 1px solid rgba(255, 255, 255, 0.4) !important;
  font-weight: 900;
}

/* 3. s-submitted (已繳交) - Neon Blue */
.highlight-correction-active .homework-student-tile.s-submitted {
  background: linear-gradient(135deg, #2979ff, #2962ff) !important;
  border-color: #2979ff !important;
  border-width: 2px !important;
  color: #ffffff !important;
  animation: pulse-glow-submitted 1.8s infinite ease-in-out;
  transition: all 0.3s ease;
  z-index: 10;
}
.highlight-correction-active .homework-student-tile.s-submitted .homework-student-id,
.highlight-correction-active .homework-student-tile.s-submitted .homework-student-name,
.highlight-correction-active .homework-student-tile.s-submitted .homework-status-pill {
  color: #ffffff !important;
}
.highlight-correction-active .homework-student-tile.s-submitted .homework-status-pill {
  background: rgba(255, 255, 255, 0.28) !important;
  border: 1px solid rgba(255, 255, 255, 0.4) !important;
  font-weight: 900;
}

/* 4. s-completed (已完成) - Emerald Green */
.highlight-correction-active .homework-student-tile.s-completed {
  background: linear-gradient(135deg, #00e676, #00c853) !important;
  border-color: #00e676 !important;
  border-width: 2px !important;
  color: #ffffff !important;
  animation: pulse-glow-completed 1.8s infinite ease-in-out;
  transition: all 0.3s ease;
  z-index: 10;
}
.highlight-correction-active .homework-student-tile.s-completed .homework-student-id,
.highlight-correction-active .homework-student-tile.s-completed .homework-student-name,
.highlight-correction-active .homework-student-tile.s-completed .homework-status-pill {
  color: #ffffff !important;
}
.highlight-correction-active .homework-student-tile.s-completed .homework-status-pill {
  background: rgba(255, 255, 255, 0.28) !important;
  border: 1px solid rgba(255, 255, 255, 0.4) !important;
  font-weight: 900;
}

/* Enhancing task board student chips when highlighted */
@keyframes pulse-glow-chip-correction {
  0% {
    box-shadow: 0 0 8px rgba(255, 23, 68, 0.4);
    transform: scale(1);
  }
  50% {
    box-shadow: 0 0 18px rgba(255, 23, 68, 0.85);
    transform: scale(1.08);
  }
  100% {
    box-shadow: 0 0 8px rgba(255, 23, 68, 0.4);
    transform: scale(1);
  }
}

@keyframes pulse-glow-chip-pending {
  0% {
    box-shadow: 0 0 8px rgba(255, 145, 0, 0.4);
    transform: scale(1);
  }
  50% {
    box-shadow: 0 0 18px rgba(255, 145, 0, 0.85);
    transform: scale(1.08);
  }
  100% {
    box-shadow: 0 0 8px rgba(255, 145, 0, 0.4);
    transform: scale(1);
  }
}

.highlight-correction-active .student-task-chip.is-correction {
  background: linear-gradient(135deg, #ff1744, #ff5252) !important;
  border-color: #d50000 !important;
  border-width: 2px !important;
  animation: pulse-glow-chip-correction 1.8s infinite ease-in-out;
}
.highlight-correction-active .student-task-chip.is-correction .task-student-seat {
  color: #ffffff !important;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3) !important;
}

.highlight-correction-active .student-task-chip.is-pending {
  background: linear-gradient(135deg, #ff9100, #ffb74d) !important;
  border-color: #ff6d00 !important;
  border-width: 2px !important;
  animation: pulse-glow-chip-pending 1.8s infinite ease-in-out;
}
.highlight-correction-active .student-task-chip.is-pending .task-student-seat {
  color: #ffffff !important;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3) !important;
}

/* Redesigned Interactive Task Board Presentation Overrides */
.task-board-modal.is-presenting .task-board-grid {
  grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
  max-height: calc(100vh - 160px);
  height: auto;
  overflow-y: auto;
  padding: 10px;
  gap: 20px;
}
.task-board-modal.is-presenting .task-board-item {
  min-height: 240px;
  padding: 24px;
  border-radius: 28px;
  grid-template-rows: auto minmax(0, 1fr);
}
.task-board-modal.is-presenting .task-board-item-head h3 {
  font-size: clamp(24px, 2.5vw, 36px);
}
.task-board-modal.is-presenting .task-student-list {
  grid-template-columns: repeat(auto-fill, minmax(72px, 1fr));
  gap: 12px;
}
.task-board-modal.is-presenting .student-task-chip.is-seat-only {
  min-height: clamp(64px, 6vw, 92px);
  border-radius: clamp(16px, 1.5vw, 24px);
}
.task-board-modal.is-presenting .task-student-seat {
  font-size: clamp(36px, 4.5vw, 68px);
}

/* Floating Undo Toast Component */
.task-undo-toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: rgba(29, 29, 31, 0.95);
  color: #fff;
  padding: 12px 24px;
  border-radius: 16px;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.35);
  display: flex;
  align-items: center;
  gap: 16px;
  z-index: 13000;
  opacity: 0;
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.4s ease;
  pointer-events: none;
  backdrop-filter: blur(10px);
}
.task-undo-toast.visible {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
  pointer-events: auto;
}
.task-undo-btn {
  background: #ff9f0a;
  color: #000;
  border: none;
  padding: 6px 14px;
  border-radius: 20px;
  font-weight: 800;
  cursor: pointer;
  font-size: 0.9rem;
  transition: transform 0.2s;
}
.task-undo-btn:hover {
  transform: scale(1.05);
}
.task-undo-btn:active {
  transform: scale(0.95);
}

/* Single-page homework playback board */
.homework-live-backdrop {
  position: fixed;
  inset: 0;
  z-index: 12600;
  background:
    radial-gradient(circle at 12% 12%, rgba(255, 207, 79, 0.16), transparent 24%),
    linear-gradient(135deg, rgba(13, 31, 54, 0.96), rgba(9, 38, 34, 0.96));
  padding: clamp(12px, 1.8vw, 24px);
  overflow: hidden;
}

.homework-live-board {
  width: 100%;
  height: 100%;
  max-height: 100%;
  overflow: hidden;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  gap: clamp(10px, 1.4vh, 18px);
  padding: clamp(14px, 1.8vw, 26px);
  border: clamp(4px, 0.55vw, 7px) solid #d7b86a;
  border-radius: 24px;
  background:
    linear-gradient(90deg, rgba(255,255,255,0.035) 1px, transparent 1px),
    linear-gradient(0deg, rgba(255,255,255,0.035) 1px, transparent 1px),
    #0d342d;
  background-size: 34px 34px;
  box-shadow: inset 0 0 0 3px rgba(0,0,0,0.25), 0 24px 80px rgba(0,0,0,0.38);
  color: #fff8dc;
}

@supports (height: 100dvh) {
  .homework-live-backdrop {
    height: 100dvh;
  }
}

.homework-live-header {
  min-height: 0;
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 18px;
  border-bottom: 2px dashed rgba(255, 248, 220, 0.34);
  padding-bottom: clamp(8px, 1vh, 12px);
}

.homework-live-header h2 {
  margin: 0;
  font-size: clamp(30px, 4.6vw, 68px);
  line-height: 0.95;
  color: #fff8dc;
  text-shadow: 0 3px 0 rgba(0,0,0,0.22);
}

.homework-live-header p {
  margin: 6px 0 0;
  color: rgba(255,248,220,0.76);
  font-weight: 800;
  font-size: clamp(12px, 1.3vw, 18px);
}

.homework-live-list {
  min-height: 0;
  overflow-y: auto;
  overflow-x: hidden;
  display: grid;
  grid-auto-rows: auto;
  align-content: start;
  gap: clamp(10px, 1.25vh, 14px);
  padding: 2px clamp(4px, 0.7vw, 10px) 10px 0;
  overscroll-behavior: contain;
  scrollbar-gutter: stable;
  -webkit-overflow-scrolling: touch;
}

.homework-live-list::-webkit-scrollbar {
  width: 10px;
}

.homework-live-list::-webkit-scrollbar-track {
  border-radius: 999px;
  background: rgba(255, 248, 220, 0.1);
}

.homework-live-list::-webkit-scrollbar-thumb {
  border: 2px solid rgba(21, 49, 40, 0.86);
  border-radius: 999px;
  background: #d7b86a;
}

.homework-live-row {
  min-height: 104px;
  max-height: none;
  overflow: visible;
  display: grid;
  grid-template-columns: clamp(46px, 5vw, 72px) minmax(0, 1fr);
  gap: clamp(10px, 1.3vw, 18px);
  align-items: stretch;
  padding: clamp(8px, 1vw, 14px);
  border: 2px solid rgba(255,248,220,0.34);
  border-radius: 18px;
  background: rgba(255, 248, 220, 0.055);
}

.homework-live-row.is-clear {
  background: rgba(58, 176, 112, 0.12);
}

.homework-live-number {
  display: grid;
  place-items: center;
  min-height: 0;
  border: 2px solid rgba(255,248,220,0.55);
  border-radius: 16px;
  color: #153128;
  background: #fff8dc;
  font-size: clamp(24px, 3vw, 42px);
  font-weight: 950;
}

.homework-live-main {
  min-width: 0;
  min-height: 0;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  gap: clamp(5px, 0.8vh, 8px);
}

.homework-live-title-line {
  min-width: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

.homework-live-title-line h3 {
  margin: 0;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: #fff8dc;
  font-size: clamp(18px, 2vw, 30px);
  line-height: 1.04;
}

.homework-live-title-line span {
  flex-shrink: 0;
  padding: 4px 9px;
  border-radius: 999px;
  background: rgba(255, 207, 79, 0.16);
  color: #ffdf75;
  font-weight: 950;
  font-size: clamp(11px, 1.1vw, 15px);
}

.homework-live-seats {
  min-height: 0;
  max-height: none;
  overflow-y: visible;
  overflow-x: hidden;
  align-content: start;
  display: flex;
  flex-wrap: wrap;
  gap: clamp(4px, 0.55vw, 8px);
  padding-right: 4px;
  scrollbar-width: thin;
  overscroll-behavior: contain;
}

.homework-live-seats::-webkit-scrollbar {
  width: 6px;
}

.homework-live-seats::-webkit-scrollbar-thumb {
  border-radius: 999px;
  background: rgba(255, 248, 220, 0.38);
}

.homework-live-seat {
  flex: 0 0 auto;
  width: clamp(32px, 3vw, 46px);
  height: clamp(28px, 2.65vw, 40px);
  border: 2px solid #fff8dc;
  border-radius: 12px;
  background: #ffdf75;
  color: #153128;
  box-shadow: 0 4px 0 rgba(0,0,0,0.28);
  font-weight: 950;
  font-size: clamp(14px, 1.25vw, 20px);
  cursor: pointer;
}

.homework-live-board.is-dense .homework-live-seat {
  width: clamp(30px, 2.7vw, 42px);
  height: clamp(28px, 2.35vw, 36px);
  font-size: clamp(13px, 1.1vw, 18px);
}

.homework-live-seat.is-correction {
  background: #ffb6a3;
}

.homework-live-seat:hover {
  transform: translateY(-2px);
  filter: brightness(1.05);
}

.homework-live-clear {
  display: inline-flex;
  align-items: center;
  min-height: clamp(28px, 2.65vw, 40px);
  padding: 0 14px;
  border: 2px solid rgba(255,248,220,0.5);
  border-radius: 12px;
  color: #b9ffd1;
  font-weight: 950;
}

.homework-live-empty {
  height: 100%;
  display: grid;
  place-items: center;
  text-align: center;
}

.homework-live-empty h3 {
  margin: 0;
  font-size: clamp(28px, 4vw, 56px);
}

.homework-confirm-popover {
  position: fixed;
  inset: 0;
  z-index: 12700;
  display: grid;
  place-items: center;
  padding: 20px;
  background: rgba(0, 0, 0, 0.28);
}

.homework-confirm-card {
  width: min(520px, 92vw);
  padding: 24px;
  border: 4px solid #d7b86a;
  border-radius: 22px;
  background: #fff8dc;
  color: #153128;
  box-shadow: 0 18px 60px rgba(0,0,0,0.38);
  animation: homeworkConfirmPop 0.22s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.homework-confirm-card h3 {
  margin: 6px 0 6px;
  font-size: clamp(24px, 3vw, 36px);
}

.homework-confirm-card p {
  margin: 0 0 18px;
  color: rgba(21,49,40,0.72);
  font-weight: 850;
}

.homework-confirm-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  flex-wrap: wrap;
}

.homework-live-board.is-dense {
  gap: clamp(8px, 1vh, 12px);
}

.homework-live-board.is-dense .homework-live-header h2 {
  font-size: clamp(26px, 3.5vw, 50px);
}

.homework-live-board.is-dense .homework-live-row {
  min-height: 96px;
  max-height: none;
  padding: clamp(6px, 0.8vw, 10px);
}

.homework-live-board.is-dense .homework-live-title-line h3 {
  font-size: clamp(16px, 1.65vw, 24px);
}

.homework-live-board.is-dense .homework-live-list {
  grid-auto-rows: auto;
}

.homework-live-board.is-dense .homework-live-seats {
  max-height: none;
}

@keyframes homeworkConfirmPop {
  0% { opacity: 0; transform: translateY(12px) scale(0.96); }
  100% { opacity: 1; transform: translateY(0) scale(1); }
}

@media (max-width: 720px) {
  .homework-live-header {
    align-items: stretch;
    flex-direction: column;
  }

  .homework-live-row {
    grid-template-columns: 42px minmax(0, 1fr);
    min-height: 112px;
    max-height: none;
  }

  .homework-live-title-line {
    align-items: flex-start;
    flex-direction: column;
    gap: 6px;
  }

  .homework-live-list {
    grid-auto-rows: auto;
  }

  .homework-live-seats {
    max-height: none;
  }
}

/* Homework batch editing */
.homework-batch-toolbar {
  display: grid;
  grid-template-columns: minmax(0, 0.72fr) minmax(320px, 1.28fr);
  gap: 16px;
  align-items: center;
}

.homework-batch-toolbar h3 {
  margin: 4px 0 4px;
  color: var(--manager-ink);
}

.homework-batch-toolbar p {
  margin: 0;
  color: var(--manager-muted);
  font-weight: 800;
}

.homework-batch-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
}

.homework-student-tile.is-batch-mode {
  cursor: pointer;
  position: relative;
}

.homework-student-tile.is-batch-mode::after {
  content: "";
  position: absolute;
  top: 8px;
  right: 8px;
  width: 18px;
  height: 18px;
  border: 2px solid rgba(23, 50, 95, 0.45);
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.82);
}

.homework-student-tile.is-selected {
  transform: translateY(-3px);
  outline: 4px solid #ffcf4f;
  box-shadow: 0 8px 0 #17325f, 0 18px 34px rgba(23, 50, 95, 0.24) !important;
}

.homework-student-tile.is-selected::after {
  border-color: #17325f;
  background: #ffcf4f;
  box-shadow: inset 0 0 0 3px #fff8d7;
}

@media (max-width: 900px) {
  .homework-batch-toolbar {
    grid-template-columns: 1fr;
  }

  .homework-batch-actions {
    justify-content: stretch;
  }

  .homework-batch-actions .btn {
    flex: 1 1 140px;
  }
}

/* Picker no-repeat controls and QR access buttons */
.picker-repeat-panel {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 14px;
  border: 1px solid rgba(46, 117, 108, 0.18);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.56);
}

.picker-repeat-copy {
  display: grid;
  gap: 2px;
  min-width: 0;
}

.picker-repeat-copy strong {
  color: var(--manager-ink);
  font-size: 14px;
  font-weight: 950;
}

.picker-repeat-copy span {
  color: var(--manager-muted);
  font-size: 12px;
  font-weight: 850;
}

.picker-repeat-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  flex-wrap: wrap;
  gap: 10px;
}

.picker-repeat-actions .cm-button {
  min-height: 34px;
  padding: 7px 12px;
  font-size: 12px;
}

.picker-repeat-switch {
  flex: 0 0 auto;
}

.student-card-qr-button,
.teacher-roster-qr-button {
  border: 2px solid #17325f;
  background: #ffffff;
  color: #17325f;
  font-weight: 950;
  cursor: pointer;
  box-shadow: 0 3px 0 #17325f;
}

.student-card-qr-button {
  position: absolute;
  top: 10px;
  right: 10px;
  z-index: 4;
  width: 42px;
  height: 32px;
  border-radius: 10px;
  font-size: 0.78rem;
}

.student-card-qr-button:hover,
.teacher-roster-qr-button:hover {
  background: #ffcf4f;
}

.student-card-qr-button:active,
.teacher-roster-qr-button:active {
  transform: translateY(2px);
  box-shadow: 0 1px 0 #17325f;
}

.teacher-qr-actions {
  display: flex;
  justify-content: flex-end;
  flex-wrap: wrap;
  gap: 8px;
}

.teacher-qr-actions .game-btn {
  min-height: 38px;
  padding: 7px 12px;
  font-size: 0.86rem;
}

.teacher-roster-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  flex-wrap: wrap;
  gap: 6px;
}

.teacher-roster-qr-button {
  min-width: 34px;
  min-height: 28px;
  border-radius: 8px;
  font-size: 0.76rem;
  line-height: 1;
}

.qr-modal-actions {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
  width: 100%;
}

@media (max-width: 720px) {
  .picker-repeat-panel {
    align-items: stretch;
    flex-direction: column;
  }

  .picker-repeat-actions,
  .teacher-qr-actions,
  .teacher-roster-actions {
    justify-content: stretch;
  }

  .picker-repeat-actions .cm-button,
  .teacher-qr-actions .game-btn,
  .qr-modal-actions .cm-button {
    flex: 1 1 auto;
  }

  .qr-modal-actions {
    grid-template-columns: 1fr;
  }
}