@property --cm-angle {
  syntax: "<angle>";
  inherits: false;
  initial-value: -70deg;
}

:root {
  --cm-bg: #f6f1e8;
  --cm-surface: rgba(255, 255, 255, 0.76);
  --cm-surface-soft: rgba(255, 255, 255, 0.54);
  --cm-surface-strong: rgba(255, 255, 255, 0.9);
  --cm-border: rgba(105, 77, 58, 0.16);
  --cm-border-strong: rgba(105, 77, 58, 0.28);
  --cm-ink: #2d211c;
  --cm-muted: #74615a;
  --cm-faint: #9b8b83;
  --cm-accent: #6f4e37;
  --cm-accent-2: #2e756c;
  --cm-warm: #c7834b;
  --cm-danger: #a94338;
  --cm-good: #2e756c;
  --cm-radius: 18px;
  --cm-radius-lg: 26px;
  --cm-shadow: 0 22px 70px rgba(70, 49, 35, 0.14);
  --cm-shadow-soft: 0 12px 36px rgba(70, 49, 35, 0.1);
  --cm-font: 'PingFang TC', 'Noto Sans TC', 'Microsoft JhengHei', 'Helvetica Neue', Arial, sans-serif;
  --cm-motion: cubic-bezier(0.2, 0.8, 0.2, 1);
}

* {
  box-sizing: border-box;
}

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

body.cm-theme,
body.light-mode,
body {
  font-family: var(--cm-font);
  color: var(--cm-ink);
  background:
    linear-gradient(115deg, rgba(255, 255, 255, 0.5), transparent 18%, rgba(111, 78, 55, 0.06) 32%, transparent 54%),
    linear-gradient(20deg, rgba(46, 117, 108, 0.12), transparent 34%, rgba(199, 131, 75, 0.16) 68%, transparent 100%),
    linear-gradient(135deg, #f8f3ea 0%, #eee3d6 52%, #f6efe5 100%) !important;
  background-attachment: fixed !important;
  -webkit-font-smoothing: antialiased;
}

body.cm-theme::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(111, 78, 55, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(111, 78, 55, 0.035) 1px, transparent 1px);
  background-size: 42px 42px;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.82), transparent 86%);
}

body.cm-theme::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    linear-gradient(120deg, rgba(255, 255, 255, 0.5), transparent 35%),
    radial-gradient(circle at 55% 100%, rgba(255, 255, 255, 0.42), transparent 38vw);
}

@keyframes cmLiquidSweep {
  from { --cm-angle: -70deg; }
  to { --cm-angle: 290deg; }
}

@keyframes cmFloatIn {
  from {
    opacity: 0;
    transform: translateY(14px) scale(0.985);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes cmBreath {
  0%, 100% { box-shadow: var(--cm-shadow-soft); }
  50% { box-shadow: 0 18px 48px rgba(70, 49, 35, 0.16); }
}

button,
input,
textarea,
select {
  font: inherit;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

.cm-page {
  width: min(1500px, calc(100vw - 28px));
  margin: 0 auto;
  padding: 14px 0 28px;
}

.cm-app-shell {
  width: min(1500px, calc(100vw - 28px));
  min-height: calc(100vh - 28px);
  margin: 14px auto;
  display: grid;
  grid-template-columns: 268px minmax(0, 1fr);
  gap: 14px;
}

.cm-app-shell,
.cm-sidebar,
.cm-main,
.cm-content,
.cm-card,
.cm-glass,
.cm-topbar,
.class-context-bar {
  min-width: 0;
  max-width: 100%;
  box-sizing: border-box;
}

.cm-sidebar,
.cm-main,
.cm-glass {
  position: relative;
  background:
    linear-gradient(var(--cm-angle), rgba(255, 255, 255, 0.72), rgba(255, 255, 255, 0.34) 34%, rgba(255, 255, 255, 0.7) 68%),
    var(--cm-surface);
  border: 1px solid var(--cm-border);
  box-shadow: var(--cm-shadow);
  backdrop-filter: blur(28px) saturate(170%);
  -webkit-backdrop-filter: blur(28px) saturate(170%);
  overflow: hidden;
  animation: cmFloatIn 0.55s var(--cm-motion) both;
}

.cm-sidebar::before,
.cm-main::before,
.cm-glass::before,
.cm-card::before,
.class-context-bar::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  border-radius: inherit;
  background:
    linear-gradient(130deg, rgba(255, 255, 255, 0.48), transparent 24%, transparent 70%, rgba(255, 255, 255, 0.22)),
    linear-gradient(var(--cm-angle), transparent 20%, rgba(255, 255, 255, 0.32), transparent 48%);
  opacity: 0.55;
  mix-blend-mode: screen;
  animation: cmLiquidSweep 9s linear infinite;
}

.cm-sidebar {
  position: sticky;
  top: 14px;
  min-height: calc(100vh - 28px);
  align-self: start;
  border-radius: var(--cm-radius-lg);
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.cm-main {
  min-height: calc(100vh - 28px);
  border-radius: 30px;
  overflow: hidden;
}

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

.cm-brand-icon {
  width: 46px;
  height: 46px;
  border-radius: 16px;
  display: grid;
  place-items: center;
  color: white;
  font-size: 22px;
  font-weight: 900;
  background: linear-gradient(135deg, var(--cm-accent), var(--cm-warm));
  box-shadow: 0 12px 24px rgba(111, 78, 55, 0.22);
}

.cm-brand-title {
  font-weight: 900;
  font-size: 18px;
  letter-spacing: 0;
}

.cm-brand-subtitle,
.cm-muted {
  color: var(--cm-muted);
  font-size: 12px;
}

.cm-section-label {
  color: var(--cm-faint);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

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

.cm-class-chip,
.cm-nav-link,
.cm-action,
.cm-button {
  min-height: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 1px solid var(--cm-border);
  border-radius: 999px;
  color: var(--cm-ink);
  background: rgba(255, 255, 255, 0.55);
  text-decoration: none;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: transform 0.2s var(--cm-motion), background 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.cm-class-chip::before,
.cm-nav-link::before,
.cm-action::before,
.cm-button::before,
.btn::before {
  content: "";
  position: absolute;
  inset: 1px;
  border-radius: inherit;
  pointer-events: none;
  background: linear-gradient(115deg, rgba(255,255,255,0.58), transparent 36%, rgba(255,255,255,0.18));
  opacity: 0;
  transition: opacity 0.2s ease;
}

.cm-class-chip {
  width: 100%;
  justify-content: space-between;
  border-radius: 15px;
  padding: 10px 12px;
  text-align: left;
}

.cm-class-chip:hover,
.cm-class-chip.is-active,
.cm-nav-link:hover,
.cm-nav-link.is-active,
.cm-action:hover,
.cm-button:hover {
  background: rgba(255, 255, 255, 0.92);
  border-color: var(--cm-border-strong);
  transform: translateY(-2px);
  box-shadow: var(--cm-shadow-soft);
}

.cm-class-chip:hover::before,
.cm-nav-link:hover::before,
.cm-action:hover::before,
.cm-button:hover::before,
.btn:hover::before {
  opacity: 1;
}

.cm-class-chip.is-active,
.cm-nav-link.is-active {
  color: white;
  background: linear-gradient(135deg, var(--cm-accent), #8b674e);
  border-color: rgba(255, 255, 255, 0.4);
  animation: cmBreath 3.8s ease-in-out infinite;
}

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

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

.cm-nav-link {
  width: 100%;
  justify-content: flex-start;
  border-radius: 15px;
  padding: 10px 12px;
  font-weight: 700;
  text-align: left;
}

.cm-nav-link > .nav-crystal-icon,
.cm-nav-link > .cm-nav-icon {
  flex: 0 0 auto;
}

.cm-nav-link > span {
  flex: 1 1 auto;
  min-width: 0;
  text-align: left;
  line-height: 1.14;
}

.cm-nav-icon {
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  border-radius: 10px;
  color: var(--cm-accent);
  background: rgba(111, 78, 55, 0.08);
}

.cm-nav-link.is-active .cm-nav-icon {
  color: white;
  background: rgba(255, 255, 255, 0.18);
}

.cm-sidebar-footer {
  margin-top: auto;
  display: grid;
  gap: 8px;
}

.cm-topbar,
.class-context-bar {
  min-height: 74px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 22px;
  border-radius: 24px;
  background: var(--cm-surface) !important;
  border: 1px solid var(--cm-border) !important;
  box-shadow: var(--cm-shadow-soft) !important;
  backdrop-filter: blur(22px) saturate(155%);
  -webkit-backdrop-filter: blur(22px) saturate(155%);
}

.cm-main .cm-topbar {
  border-radius: 0;
  border-top: 0 !important;
  border-left: 0 !important;
  border-right: 0 !important;
  box-shadow: none !important;
}

.cm-eyebrow,
.context-label {
  color: var(--cm-accent);
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.cm-title,
.context-title {
  margin: 3px 0 0;
  color: var(--cm-ink);
  font-size: clamp(26px, 3vw, 42px);
  line-height: 1.05;
  font-weight: 900;
  letter-spacing: 0;
}

.cm-description,
.context-meta {
  color: var(--cm-muted);
  line-height: 1.65;
}

.cm-topbar-actions {
  display: flex;
  gap: 9px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.cm-button,
.cm-action,
.btn,
.btn-primary,
.btn-secondary,
.nav-btn,
.main-action-btn {
  position: relative;
  overflow: hidden;
  border-radius: 999px !important;
  min-height: 40px;
  padding: 9px 14px !important;
  font-weight: 800 !important;
  border: 1px solid var(--cm-border) !important;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.65);
}

.cm-button.cm-primary,
.cm-action.cm-primary,
.btn-primary,
.nav-btn,
.main-action-btn {
  color: #fff !important;
  background: linear-gradient(135deg, var(--cm-accent), #8f6549) !important;
}

.cm-button.cm-secondary,
.btn-secondary {
  color: var(--cm-accent) !important;
  background: rgba(255, 255, 255, 0.64) !important;
}

.cm-content {
  padding: 18px;
  display: grid;
  gap: 14px;
}

.cm-card,
.panel,
.card,
.controls-panel,
.layout-controls,
.tool-widget,
.modal-content,
.modal-card {
  position: relative;
  background:
    linear-gradient(140deg, rgba(255,255,255,0.7), rgba(255,255,255,0.42)),
    var(--cm-surface-soft) !important;
  border: 1px solid var(--cm-border) !important;
  border-radius: var(--cm-radius) !important;
  box-shadow: var(--cm-shadow-soft) !important;
  backdrop-filter: blur(20px) saturate(155%);
  -webkit-backdrop-filter: blur(20px) saturate(155%);
  overflow: hidden;
  animation: cmFloatIn 0.5s var(--cm-motion) both;
  transition: transform 0.22s var(--cm-motion), box-shadow 0.22s ease, border-color 0.22s ease;
}

.cm-card:hover,
.card:hover,
.panel:hover {
  transform: translateY(-2px);
  border-color: var(--cm-border-strong) !important;
  box-shadow: 0 18px 52px rgba(70, 49, 35, 0.14) !important;
}

.cm-card-strong,
.workspace,
.rail,
.seating-chart-container #seat-map-wrapper {
  background: var(--cm-surface) !important;
  border: 1px solid var(--cm-border) !important;
  box-shadow: var(--cm-shadow) !important;
}

input,
textarea,
select,
.input-field {
  color: var(--cm-ink) !important;
  background: rgba(255, 255, 255, 0.74) !important;
  border: 1px solid var(--cm-border) !important;
  border-radius: 14px !important;
  outline: none;
}

input:focus,
textarea:focus,
select:focus,
.input-field:focus {
  border-color: rgba(46, 117, 108, 0.46) !important;
  box-shadow: 0 0 0 4px rgba(46, 117, 108, 0.12) !important;
}

.cm-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 30px;
  padding: 5px 10px;
  border-radius: 999px;
  color: var(--cm-muted);
  background: rgba(255, 255, 255, 0.5);
  border: 1px solid var(--cm-border);
  font-size: 12px;
  font-weight: 800;
}

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

.cm-stat {
  min-height: 96px;
  padding: 16px;
  animation-delay: calc(var(--cm-i, 0) * 70ms);
}

.cm-stat-label {
  color: var(--cm-muted);
  font-size: 12px;
  font-weight: 800;
}

.cm-button.cm-exam-mode {
  color: #fff !important;
  background: linear-gradient(135deg, #2e756c, #0d4d48) !important;
  border-color: rgba(255,255,255,0.42) !important;
}

.group-ops-hero-tools {
  display: grid;
  gap: 10px;
  min-width: min(470px, 100%);
}

.group-layout-switch {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5px;
  padding: 5px;
  border: 2px solid rgba(23, 50, 95, .15);
  border-radius: 14px;
  background: rgba(255, 255, 255, .74);
}

.group-layout-switch button {
  min-height: 38px;
  border: 0;
  border-radius: 10px;
  background: transparent;
  color: var(--manager-muted);
  font: inherit;
  font-weight: 950;
  cursor: pointer;
}

.group-layout-switch button.is-active {
  background: #17325f;
  color: #fff8dc;
  box-shadow: 0 3px #ffcf4f;
}

.group-all-score-panel {
  display: grid;
  gap: 14px;
  padding: clamp(14px, 2vw, 22px);
  border: 2px solid rgba(23, 50, 95, .16);
  border-radius: 20px;
  background: linear-gradient(135deg, rgba(255, 255, 255, .94), rgba(235, 248, 244, .9)), repeating-linear-gradient(135deg, rgba(255, 207, 79, .1) 0 8px, transparent 8px 22px);
  box-shadow: 0 16px 38px rgba(23, 50, 95, .12);
}

.group-all-score-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 16px;
}

.group-all-score-heading h3 { margin: 3px 0 2px; color: var(--manager-ink); font-size: clamp(22px, 2.6vw, 34px); }
.group-all-score-heading p { margin: 0; color: var(--manager-muted); font-weight: 800; }

.group-all-score-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(210px, 100%), 1fr));
  gap: 12px;
  align-items: stretch;
}

.group-quick-score-card {
  position: relative;
  display: grid;
  grid-template-rows: auto auto 1fr 1fr;
  gap: 10px;
  min-width: 0;
  padding: 13px;
  border: 3px solid #17325f;
  border-radius: 18px;
  background: rgba(255, 255, 255, .92);
  box-shadow: 0 5px #17325f, 0 12px 26px rgba(23, 50, 95, .14);
  overflow: hidden;
}

.group-quick-score-card::before { content: ""; position: absolute; inset: 0 0 auto; height: 6px; background: linear-gradient(90deg, #ffcf4f, #2f776d); }
.group-quick-score-head { display: flex; align-items: start; justify-content: space-between; gap: 8px; padding-top: 3px; }
.group-quick-score-head > div { display: grid; gap: 1px; }
.group-quick-score-head span { color: #17325f; font-size: 17px; font-weight: 950; }
.group-quick-score-head strong { color: var(--manager-muted); font-size: 12px; }
.group-quick-score-head em { padding: 4px 8px; border-radius: 999px; background: rgba(255, 207, 79, .3); color: #775400; font-size: 12px; font-style: normal; font-weight: 950; white-space: nowrap; }

.group-quick-members { display: flex; min-height: 31px; align-items: center; flex-wrap: wrap; gap: 5px; }
.group-quick-members span { display: grid; width: 27px; height: 27px; place-items: center; border: 2px solid rgba(23, 50, 95, .2); border-radius: 9px; background: #eef6ff; color: #17325f; font-size: 12px; font-weight: 950; }
.group-quick-members small { color: var(--manager-muted); font-weight: 850; }

.group-quick-score-block { display: grid; gap: 6px; padding: 9px; border: 2px solid rgba(47, 119, 109, .15); border-radius: 13px; background: rgba(233, 249, 243, .75); }
.group-quick-score-block.is-competition { border-color: rgba(201, 133, 78, .2); background: rgba(255, 244, 222, .82); }
.group-quick-score-block > strong { color: var(--manager-ink); font-size: 12px; font-weight: 950; }
.group-quick-action-grid { display: grid; grid-template-columns: .7fr 1.45fr .7fr; gap: 6px; }
.group-quick-action-grid .group-action-btn { min-width: 0; min-height: 40px; padding: 6px; font-size: 13px; }
.group-quick-action-grid .group-action-btn.is-primary { border-width: 3px; font-size: 14px; font-weight: 950; }

@media (max-width: 900px) {
  .group-ops-hero-tools { min-width: 0; }
  .group-all-score-heading { align-items: stretch; flex-direction: column; }
}

.mission-class-award-backdrop {
  z-index: 15100;
  display: grid;
  place-items: center;
  padding: 18px;
  background: rgba(8, 20, 38, .72);
  backdrop-filter: blur(12px);
}

.mission-class-award-modal {
  width: min(900px, 96vw);
  max-height: min(820px, 92vh);
  overflow: hidden;
  display: grid;
  grid-template-rows: auto auto auto minmax(0, 1fr) auto;
  gap: 13px;
  padding: clamp(16px, 2.5vw, 26px);
  border: 5px solid #17325f;
  border-radius: 24px;
  background: linear-gradient(145deg, #fffdf3, #eaf8f2);
  box-shadow: 0 10px #ffcf4f, 0 32px 90px rgba(0, 0, 0, .45);
  color: #17325f;
}

.mission-class-award-head {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 18px;
}

.mission-class-award-head span { color: #2f776d; font-size: 11px; font-weight: 950; letter-spacing: .16em; }
.mission-class-award-head h3 { margin: 2px 0 4px; font-size: clamp(24px, 3.4vw, 42px); line-height: 1.05; }
.mission-class-award-head p { max-width: 62em; margin: 0; color: #496b95; font-weight: 800; line-height: 1.55; }

.mission-class-award-summary {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.mission-class-award-summary strong,
.mission-class-award-summary span {
  min-height: 46px;
  display: grid;
  place-items: center;
  padding: 8px 12px;
  border: 3px solid #17325f;
  border-radius: 14px;
  font-weight: 950;
  text-align: center;
}

.mission-class-award-summary strong { background: #dff8e8; color: #145c36; }
.mission-class-award-summary span { background: #ffe2dc; color: #9f2e27; }

.mission-class-award-toolbar { display: flex; justify-content: flex-end; flex-wrap: wrap; gap: 8px; }

.mission-class-award-grid {
  min-height: 0;
  overflow: auto;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(126px, 1fr));
  gap: 9px;
  padding: 3px 5px 12px 0;
  scrollbar-gutter: stable;
}

.mission-class-award-student {
  min-width: 0;
  min-height: 102px;
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  grid-template-rows: auto auto;
  gap: 3px 8px;
  align-items: center;
  padding: 10px;
  border: 3px solid #17325f;
  border-radius: 16px;
  background: #fff;
  color: #17325f;
  box-shadow: 0 4px #17325f;
  font: inherit;
  text-align: left;
  cursor: pointer;
}

.mission-class-award-student strong { grid-row: 1 / 3; display: grid; width: 42px; height: 42px; place-items: center; border-radius: 13px; background: #17325f; color: #fff; font-size: 20px; }
.mission-class-award-student span { min-width: 0; overflow: hidden; text-overflow: ellipsis; font-weight: 950; white-space: nowrap; }
.mission-class-award-student em { color: #23704b; font-size: 11px; font-style: normal; font-weight: 900; }
.mission-class-award-student.is-excluded { border-color: #b23b32; background: #fff0ed; color: #8b2821; box-shadow: 0 4px #b23b32; opacity: .78; }
.mission-class-award-student.is-excluded strong { background: #b23b32; }
.mission-class-award-student.is-excluded em { color: #b23b32; }

.mission-class-award-actions { display: flex; justify-content: flex-end; gap: 10px; flex-wrap: wrap; padding-top: 4px; }

@media (max-width: 620px) {
  .mission-class-award-modal { max-height: 95vh; padding: 14px; }
  .mission-class-award-head { flex-direction: column; }
  .mission-class-award-head > .game-btn { width: 100%; }
  .mission-class-award-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .mission-class-award-actions .game-btn { flex: 1 1 130px; }
}

.quiz-picker-page {
  display: grid;
  gap: 16px;
  min-width: 0;
}

.quiz-picker-page-hero {
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 18px;
  padding: clamp(18px, 2.5vw, 28px);
  border: 3px solid #17325f;
  border-radius: 22px;
  background:
    radial-gradient(circle at 92% 16%, rgba(255, 207, 79, .38), transparent 28%),
    linear-gradient(135deg, rgba(255, 255, 255, .96), rgba(229, 248, 239, .92));
  box-shadow: 0 7px #17325f, 0 20px 45px rgba(23, 50, 95, .14);
}

.quiz-picker-page-hero::after {
  content: "?";
  position: absolute;
  right: clamp(14px, 4vw, 58px);
  bottom: -45px;
  color: rgba(23, 50, 95, .055);
  font-size: clamp(150px, 20vw, 270px);
  font-weight: 950;
  line-height: 1;
  pointer-events: none;
}

.quiz-picker-page-title { position: relative; z-index: 1; min-width: 0; }
.quiz-picker-page-title h2 { margin: 4px 0 8px; color: #17325f; font-size: clamp(30px, 4vw, 52px); line-height: 1; }
.quiz-picker-page-title p { max-width: 58em; margin: 0; color: #496b95; font-weight: 800; line-height: 1.6; }

.quiz-picker-page-stats {
  position: relative;
  z-index: 1;
  min-width: min(280px, 100%);
  display: grid;
  gap: 7px;
}

.quiz-picker-page-stats span,
.quiz-picker-page-stats strong {
  min-height: 42px;
  display: grid;
  place-items: center;
  padding: 8px 13px;
  border: 2px solid #17325f;
  border-radius: 13px;
  background: rgba(255, 255, 255, .88);
  color: #17325f;
  font-size: 13px;
  font-weight: 950;
  text-align: center;
}

.quiz-picker-page-stats strong { background: #ffcf4f; }

.quiz-picker-workspace {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(340px, .85fr);
  gap: 18px;
  align-items: stretch;
  min-width: 0;
}

.quiz-picker-draw-panel {
  min-width: 0;
  display: grid;
  grid-template-rows: auto auto minmax(220px, 1fr) auto auto;
  gap: 14px;
  padding: clamp(16px, 2vw, 22px);
  border: 2px solid rgba(23, 50, 95, .18);
  border-radius: 22px;
  background:
    radial-gradient(circle at 50% 48%, rgba(255, 207, 79, .12), transparent 34%),
    rgba(255, 255, 255, .84);
  box-shadow: 0 16px 38px rgba(23, 50, 95, .12);
}

.quiz-picker-draw-panel .tool-picker-stage { min-height: clamp(240px, 34vh, 390px); }
.quiz-picker-draw-panel .picked-name-card strong { font-size: clamp(28px, 4vw, 48px); }
.quiz-picker-draw-actions > button { min-height: 48px; font-size: 16px; font-weight: 950; }

.quiz-picker-history-panel {
  min-width: 0;
  min-height: 0;
  display: grid;
  grid-template-rows: auto auto minmax(0, 1fr);
  gap: 12px;
  padding: 15px;
  border: 4px solid #17325f;
  border-radius: 22px;
  background: linear-gradient(180deg, #fffdf2, #f5fff9);
  box-shadow: 0 6px #ffcf4f, 0 16px 34px rgba(23, 50, 95, .15);
}

.quiz-picker-history-head {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 12px;
}

.quiz-picker-history-head > div { min-width: 0; }
.quiz-picker-history-head span { color: #2f776d; font-size: 10px; font-weight: 950; letter-spacing: .14em; }
.quiz-picker-history-head h4 { margin: 3px 0 4px; color: #17325f; font-size: clamp(20px, 2.2vw, 30px); line-height: 1.05; }
.quiz-picker-history-head p { margin: 0; color: #496b95; font-size: 12px; font-weight: 800; line-height: 1.45; }
.quiz-picker-history-head > .cm-button { flex: 0 0 auto; min-height: 34px; padding: 7px 10px; font-size: 12px; }

.quiz-picker-score-setting {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 9px 11px;
  border: 2px solid rgba(23, 50, 95, .16);
  border-radius: 14px;
  background: rgba(238, 246, 255, .9);
}

.quiz-picker-score-setting > strong { color: #17325f; font-size: 12px; font-weight: 950; }
.quiz-picker-score-setting > div { display: grid; grid-template-columns: repeat(4, minmax(42px, 1fr)); gap: 5px; }
.quiz-picker-score-setting button {
  min-height: 35px;
  padding: 5px 8px;
  border: 2px solid rgba(23, 50, 95, .22);
  border-radius: 10px;
  background: #fff;
  color: #17325f;
  font: inherit;
  font-weight: 950;
  cursor: pointer;
}

.quiz-picker-score-setting button.is-active {
  border-color: #17325f;
  background: #ffcf4f;
  box-shadow: 0 3px #17325f;
}

.quiz-picker-history-list {
  min-height: 180px;
  max-height: 500px;
  overflow: auto;
  display: grid;
  align-content: start;
  gap: 8px;
  padding: 2px 5px 8px 0;
  scrollbar-gutter: stable;
}

.quiz-picker-history-row {
  min-width: 0;
  display: grid;
  grid-template-columns: 32px minmax(0, 1fr) auto;
  gap: 9px;
  align-items: center;
  padding: 9px;
  border: 2px solid rgba(23, 50, 95, .18);
  border-radius: 14px;
  background: #fff;
}

.quiz-picker-history-row.is-correct { border-color: rgba(27, 130, 73, .5); background: #edfff4; }
.quiz-picker-history-row.is-wrong { border-color: rgba(178, 59, 50, .42); background: #fff1ee; }
.quiz-picker-history-rank { display: grid; width: 32px; height: 32px; place-items: center; border-radius: 10px; background: #17325f; color: #fff; font-size: 12px; font-weight: 950; }
.quiz-picker-history-student { min-width: 0; display: grid; gap: 2px; }
.quiz-picker-history-student strong { overflow: hidden; color: #17325f; font-size: 14px; font-weight: 950; text-overflow: ellipsis; white-space: nowrap; }
.quiz-picker-history-student span { color: #496b95; font-size: 11px; font-weight: 850; }

.quiz-picker-result-actions { display: grid; grid-template-columns: 1fr 1fr; gap: 5px; }
.quiz-picker-result-actions button {
  min-height: 35px;
  padding: 6px 9px;
  border: 2px solid currentColor;
  border-radius: 10px;
  background: #fff;
  font: inherit;
  font-size: 12px;
  font-weight: 950;
  cursor: pointer;
}

.quiz-picker-result-actions .is-correct { color: #14743d; }
.quiz-picker-result-actions .is-wrong { color: #a63029; }
.quiz-picker-result-actions button:disabled { opacity: .42; cursor: default; }
.quiz-picker-history-row.is-correct .quiz-picker-result-actions .is-correct,
.quiz-picker-history-row.is-wrong .quiz-picker-result-actions .is-wrong { opacity: 1; color: #fff; }
.quiz-picker-history-row.is-correct .quiz-picker-result-actions .is-correct { background: #14743d; }
.quiz-picker-history-row.is-wrong .quiz-picker-result-actions .is-wrong { background: #a63029; }

.quiz-picker-empty {
  min-height: 180px;
  display: grid;
  place-content: center;
  gap: 5px;
  padding: 22px;
  border: 2px dashed rgba(23, 50, 95, .25);
  border-radius: 16px;
  color: #496b95;
  text-align: center;
}

.quiz-picker-empty strong { color: #17325f; font-weight: 950; }
.quiz-picker-empty span { max-width: 32em; font-size: 12px; font-weight: 800; line-height: 1.5; }

@media (max-width: 980px) {
  .quiz-picker-page-hero { align-items: stretch; flex-direction: column; }
  .quiz-picker-page-stats { min-width: 0; grid-template-columns: 1fr 1fr; }
  .quiz-picker-workspace { grid-template-columns: 1fr; }
  .quiz-picker-history-list { max-height: 430px; }
}

@media (max-width: 620px) {
  .quiz-picker-page-hero { padding: 16px; }
  .quiz-picker-page-stats { grid-template-columns: 1fr; }
  .quiz-picker-draw-panel,
  .quiz-picker-history-panel { padding: 13px; }
  .quiz-picker-history-head,
  .quiz-picker-score-setting { align-items: stretch; flex-direction: column; }
  .quiz-picker-history-head > .cm-button { width: 100%; }
  .quiz-picker-score-setting > div { width: 100%; }
  .quiz-picker-history-row { grid-template-columns: 32px minmax(0, 1fr); }
  .quiz-picker-result-actions { grid-column: 1 / -1; }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

.cm-stat-value {
  margin-top: 6px;
  color: var(--cm-ink);
  font-size: 30px;
  font-weight: 900;
}

.cm-empty {
  min-height: 280px;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 34px;
  border: 1px dashed var(--cm-border-strong);
  border-radius: var(--cm-radius-lg);
  background: rgba(255, 255, 255, 0.42);
}

.cm-empty h2 {
  margin: 0 0 10px;
  color: var(--cm-ink);
}

.cm-empty p {
  margin: 0 0 18px;
  color: var(--cm-muted);
}

@media (max-width: 1280px) {
  .cm-app-shell {
    width: min(100%, calc(100vw - 16px));
    grid-template-columns: clamp(210px, 22vw, 248px) minmax(0, 1fr);
    gap: 10px;
    margin: 8px auto;
  }

  .cm-sidebar {
    padding: 12px;
    gap: 12px;
  }

  .cm-content {
    padding: 14px;
  }

  .cm-topbar,
  .class-context-bar {
    flex-wrap: wrap;
  }

  .cm-topbar > *,
  .class-context-bar > * {
    min-width: 0;
  }
}

@media (max-width: 1120px) {
  .cm-app-shell {
    grid-template-columns: 1fr;
  }

  .cm-sidebar {
    position: static;
    top: auto;
    min-height: auto;
  }

  .cm-nav-list {
    grid-template-columns: repeat(auto-fit, minmax(128px, 1fr));
  }
}

@media (max-width: 980px) {
  .cm-app-shell {
    width: min(100vw - 18px, 760px);
    grid-template-columns: 1fr;
    margin: 9px auto;
  }

  .cm-sidebar {
    position: static;
    min-height: auto;
  }

  .cm-nav-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .cm-main {
    min-height: auto;
  }

  .cm-grid-4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .cm-page,
  .cm-app-shell {
    width: calc(100vw - 14px);
  }

  .cm-topbar,
  .class-context-bar {
    align-items: flex-start;
    flex-direction: column;
    padding: 16px;
  }

  .cm-nav-list,
  .cm-grid-4 {
    grid-template-columns: 1fr;
  }

  .cm-content {
    padding: 12px;
  }
}

/* Attendance desk: a warm, high-signal roster surface for quick classroom actions. */
.attendance-workspace {
  display: grid;
  gap: 18px;
}

.attendance-hero-card,
.attendance-settings-card,
.attendance-roster-card,
.attendance-export-card {
  border: 1px solid rgba(109, 83, 53, .16);
  background: linear-gradient(135deg, rgba(255, 252, 242, .9), rgba(237, 247, 244, .72));
}

.attendance-hero-card {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  padding: clamp(20px, 3vw, 32px);
  overflow: hidden;
  position: relative;
}

.attendance-hero-card::after {
  content: "◷";
  position: absolute;
  right: 5%;
  top: -22px;
  font-size: 9rem;
  line-height: 1;
  color: rgba(47, 119, 109, .08);
  pointer-events: none;
}

.attendance-hero-copy,
.attendance-hero-actions {
  position: relative;
  z-index: 1;
}

.attendance-hero-copy h2,
.attendance-roster-head h3,
.attendance-export-card h3 {
  margin: 4px 0 8px;
  color: #33231f;
}

.attendance-hero-copy p,
.attendance-export-card p {
  margin: 0;
  color: #7b625a;
  max-width: 600px;
}

.attendance-late-note {
  display: inline-flex;
  gap: 8px;
  align-items: center;
  margin-top: 16px;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(255, 220, 126, .28);
  color: #795526;
  font-size: .88rem;
}

.attendance-late-note strong {
  color: #9b5c20;
  font-size: 1.08rem;
}

.attendance-hero-actions {
  display: flex;
  align-items: flex-end;
  justify-content: flex-end;
  gap: 10px;
  flex-wrap: wrap;
}

.attendance-date-field,
.attendance-time-field,
.attendance-export-fields label {
  display: grid;
  gap: 6px;
  color: #7b625a;
  font-size: .78rem;
  font-weight: 700;
}

.attendance-date-field input,
.attendance-time-field input,
.attendance-export-fields input {
  min-height: 38px;
  padding: 7px 10px;
  border: 1px solid rgba(111, 78, 55, .22);
  border-radius: 10px;
  background: rgba(255, 255, 255, .82);
  color: #33231f;
  font: inherit;
}

.attendance-small-button,
.attendance-export-button {
  min-height: 38px;
  white-space: nowrap;
}

.attendance-settings-card {
  display: flex;
  align-items: end;
  gap: 16px;
  padding: 16px 20px;
}

.attendance-settings-card > div {
  display: grid;
  gap: 4px;
  flex: 1;
}

.attendance-settings-card small {
  color: #7b625a;
}

.attendance-stats-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 12px;
}

.attendance-stat-card {
  min-height: 92px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 8px;
  padding: 15px 16px;
  border: 1px solid rgba(111, 78, 55, .13);
  border-radius: 15px;
  background: rgba(255, 255, 255, .63);
  box-shadow: 0 10px 25px rgba(77, 53, 40, .07);
}

.attendance-stat-card span {
  color: #7b625a;
  font-size: .78rem;
  font-weight: 700;
}

.attendance-stat-card strong {
  color: #33231f;
  font-size: 1.8rem;
  line-height: 1;
}

.attendance-stat-card.is-present strong { color: #2f776d; }
.attendance-stat-card.is-late strong { color: #b77227; }
.attendance-stat-card.is-absent strong { color: #b74b3f; }
.attendance-stat-card.is-leave strong { color: #6b5ba5; }
.attendance-stat-card.is-unmarked strong { color: #8b817b; }

.attendance-roster-card,
.attendance-export-card {
  padding: 20px;
}

.attendance-roster-head,
.attendance-export-card {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
}

.attendance-roster-hint {
  padding: 8px 12px;
  border-radius: 10px;
  background: rgba(47, 119, 109, .08);
  color: #2f776d;
  font-size: .8rem;
  font-weight: 700;
}

.attendance-table-wrap {
  overflow-x: auto;
  margin-top: 14px;
}

.attendance-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 980px;
  table-layout: fixed;
}

.attendance-table th:nth-child(1),
.attendance-table td:nth-child(1) { width: 28%; }

.attendance-table th:nth-child(2),
.attendance-table td:nth-child(2) { width: 52%; }

.attendance-table th:nth-child(3),
.attendance-table td:nth-child(3) { width: 20%; }

.attendance-table th,
.attendance-table td {
  padding: 12px 10px;
  border-bottom: 1px solid rgba(111, 78, 55, .11);
  text-align: left;
  vertical-align: middle;
}

.attendance-table th {
  color: #7b625a;
  font-size: .76rem;
  letter-spacing: .04em;
  text-transform: uppercase;
}

.attendance-student-cell,
.attendance-time-cell,
.attendance-status-cell {
  display: table-cell;
  vertical-align: top;
}

.attendance-student-cell > *,
.attendance-time-cell > * {
  display: block;
}

.attendance-student-cell small,
.attendance-time-cell small {
  color: #8b817b;
  font-size: .75rem;
}

.attendance-time-value {
  color: #2f776d;
  font-size: 1.05rem;
  line-height: 1.2;
  letter-spacing: .03em;
  white-space: nowrap;
}

.attendance-time-source {
  color: #6d817c;
  font-size: .74rem;
  font-weight: 700;
  white-space: nowrap;
}

.attendance-student-cell small,
.attendance-time-cell > * + * {
  margin-top: 4px;
}

.attendance-record-empty {
  color: #a29891;
  font-size: .82rem;
  font-weight: 700;
  white-space: nowrap;
}

.attendance-teacher-time {
  color: #7b625a;
  font-size: .76rem;
  font-weight: 750;
  white-space: nowrap;
}

.attendance-status-badge {
  border-radius: 999px;
  font-size: .76rem;
  font-weight: 800;
}

.attendance-status-badge {
  display: inline-flex;
  width: fit-content;
  padding: 5px 9px;
  background: rgba(111, 78, 55, .09);
  color: #6e625b;
}

.attendance-status-present { --attendance-tone: #2f776d; }
.attendance-status-late { --attendance-tone: #b77227; }
.attendance-status-absent { --attendance-tone: #b74b3f; }
.attendance-status-leave { --attendance-tone: #6b5ba5; }
.attendance-status-unmarked { --attendance-tone: #8b817b; }
.attendance-status-badge.attendance-status-present { background: rgba(47, 119, 109, .12); color: #2f776d; }
.attendance-status-badge.attendance-status-late { background: rgba(183, 114, 39, .13); color: #9b5c20; }
.attendance-status-badge.attendance-status-absent { background: rgba(183, 75, 63, .12); color: #a84439; }
.attendance-status-badge.attendance-status-leave { background: rgba(107, 91, 165, .12); color: #65558f; }

.attendance-status-cell {
  min-width: 0;
  vertical-align: top;
}

.attendance-status-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin-top: 8px;
}

.attendance-status-action,
.attendance-clear-action {
  min-width: 64px;
  min-height: 44px;
  padding: 7px 10px;
  border: 1px solid color-mix(in srgb, var(--attendance-tone, #8b817b) 28%, transparent);
  border-radius: 999px;
  background: color-mix(in srgb, var(--attendance-tone, #8b817b) 8%, white);
  color: var(--attendance-tone, #8b817b);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: .84rem;
  line-height: 1.2;
  font-weight: 850;
  cursor: pointer;
  touch-action: manipulation;
  transition: .18s ease;
}

.attendance-status-action:hover,
.attendance-status-action.is-active {
  background: var(--attendance-tone, #8b817b);
  color: white;
  transform: translateY(-1px);
}

.attendance-status-action:focus-visible,
.attendance-clear-action:focus-visible {
  outline: 3px solid rgba(47, 119, 109, .42);
  outline-offset: 3px;
}

.attendance-status-action:disabled,
.attendance-clear-action:disabled {
  opacity: .45;
  cursor: not-allowed;
  transform: none;
}

.attendance-clear-action {
  --attendance-tone: #7b625a;
  border-style: dashed;
  background: transparent;
}

.attendance-export-card {
  align-items: center;
}

.attendance-export-card > div:first-child {
  flex: 1;
}

.attendance-export-fields {
  display: flex;
  align-items: end;
  gap: 10px;
  flex-wrap: wrap;
}

.attendance-range-arrow {
  padding-bottom: 10px;
  color: #2f776d;
  font-weight: 900;
}

@media (max-width: 900px) {
  .attendance-hero-card,
  .attendance-roster-head,
  .attendance-export-card {
    align-items: flex-start;
    flex-direction: column;
  }

  .attendance-hero-actions,
  .attendance-export-fields {
    width: 100%;
    justify-content: flex-start;
  }

  .attendance-stats-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 560px) {
  .attendance-settings-card {
    align-items: stretch;
    flex-direction: column;
  }

  .attendance-stats-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .attendance-hero-actions > * {
    flex: 1 1 145px;
  }

  .attendance-status-cell {
    min-width: 290px;
  }
}

/* Scoring: quiet by default, roomy controls on demand. */
.class-collective-goal {
  position: relative;
  overflow: hidden;
  margin-bottom: 20px;
  padding: clamp(18px, 2.5vw, 28px);
  border: 1px solid rgba(41, 87, 78, .18);
  border-radius: 24px;
  background:
    radial-gradient(circle at 92% 10%, rgba(255, 207, 79, .2), transparent 26%),
    linear-gradient(145deg, #fffef8 0%, #f1f8f4 100%);
  box-shadow: 0 14px 34px rgba(37, 73, 66, .1);
  color: var(--manager-ink, #17325f);
}
.class-collective-goal::after {
  content: "★";
  position: absolute;
  top: -28px;
  right: 24px;
  color: rgba(255, 194, 45, .13);
  font-size: 118px;
  line-height: 1;
  transform: rotate(10deg);
  pointer-events: none;
}
.class-collective-goal.is-collapsed {
  overflow: visible;
  padding: 12px 16px;
  border-radius: 16px;
  background: rgba(255, 255, 255, .86);
  box-shadow: 0 7px 20px rgba(37, 73, 66, .07);
}
.class-collective-goal.is-collapsed::after { display: none; }
.class-collective-goal .is-collapsed-switch {
  width: 100%;
  min-width: 0;
  padding: 0;
  border: 0;
  background: transparent;
}
.class-collective-goal .is-collapsed-switch > strong {
  margin-right: auto;
  font-size: 15px;
}
.class-collective-goal.is-unlocked {
  border-color: rgba(215, 155, 20, .58);
  background:
    radial-gradient(circle at 92% 10%, rgba(255, 207, 79, .36), transparent 30%),
    linear-gradient(145deg, #fffdf1 0%, #eefaf2 100%);
}
.class-collective-goal-heading,
.class-collective-goal-body,
.class-collective-progress-copy,
.class-collective-goal-switch {
  position: relative;
  z-index: 1;
}
.class-collective-goal-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 20px;
}
.class-collective-goal-eyebrow {
  margin-bottom: 5px;
  color: #2f776d;
  font-size: 11px;
  font-weight: 950;
  letter-spacing: .16em;
}
.class-collective-goal h2 { margin: 0; font-size: clamp(22px, 3vw, 30px); }
.class-collective-goal-heading p { margin: 7px 0 0; color: var(--manager-muted, #496b95); line-height: 1.55; }
.class-collective-goal-switch {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 230px;
  padding: 10px 12px;
  border: 1px solid rgba(47, 119, 109, .16);
  border-radius: 14px;
  background: rgba(255, 255, 255, .72);
}
.class-collective-goal-switch > span { display: grid; gap: 2px; margin-right: auto; }
.class-collective-goal-switch strong { font-size: 14px; }
.class-collective-goal-switch small { color: var(--manager-muted, #496b95); font-size: 11px; }
.class-collective-goal-body {
  display: grid;
  grid-template-columns: minmax(160px, .46fr) minmax(0, 1.54fr);
  gap: clamp(18px, 3vw, 34px);
  align-items: stretch;
}
.class-collective-total {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  min-height: 190px;
  padding: 18px;
  border-radius: 20px;
  background: #29574e;
  color: #fff;
  text-align: center;
  box-shadow: inset 0 0 0 1px rgba(255,255,255,.12), 0 10px 24px rgba(41, 87, 78, .18);
}
.class-collective-total span { color: #d8eee7; font-size: 13px; font-weight: 800; }
.class-collective-total strong { margin: 4px 0; color: #ffcf4f; font-size: clamp(44px, 7vw, 72px); line-height: 1; font-variant-numeric: tabular-nums; }
.class-collective-total small { color: rgba(255,255,255,.78); }
.class-collective-goal-main { display: flex; flex-direction: column; justify-content: center; min-width: 0; }
.class-collective-goal-fields {
  display: grid;
  grid-template-columns: minmax(130px, .5fr) minmax(220px, 1.5fr);
  gap: 12px;
  margin-bottom: 18px;
}
.class-collective-goal-fields label { display: grid; gap: 6px; min-width: 0; color: var(--manager-muted, #496b95); font-size: 12px; font-weight: 850; }
.class-collective-goal-fields input {
  width: 100%;
  min-width: 0;
  min-height: 46px;
  padding: 9px 12px;
  border: 1px solid rgba(23, 50, 95, .18);
  border-radius: 12px;
  background: rgba(255, 255, 255, .9);
  color: var(--manager-ink, #17325f);
  font: inherit;
  font-size: 15px;
}
.class-collective-goal-fields input:focus { outline: 3px solid rgba(47, 119, 109, .18); border-color: #2f776d; }
.class-collective-progress-copy { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; margin-bottom: 8px; color: var(--manager-muted, #496b95); font-size: 13px; }
.class-collective-progress-copy strong { color: var(--manager-ink, #17325f); font-size: 15px; font-variant-numeric: tabular-nums; }
.class-collective-progress-track {
  position: relative;
  height: 14px;
  overflow: hidden;
  border-radius: 999px;
  background: rgba(41, 87, 78, .13);
  box-shadow: inset 0 1px 3px rgba(25, 59, 53, .12);
}
.class-collective-progress-track i {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, #2f776d, #55a472 72%, #ffbe2e);
  transition: width .35s ease;
}
.class-collective-goal-status {
  display: flex;
  align-items: center;
  gap: 11px;
  min-height: 58px;
  margin-top: 13px;
  padding: 10px 13px;
  border-radius: 14px;
  background: rgba(255,255,255,.78);
  border: 1px solid rgba(41,87,78,.12);
}
.class-collective-goal-status-icon {
  display: grid;
  place-items: center;
  flex: 0 0 38px;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: #e3f1eb;
  color: #2f776d;
  font-size: 18px;
}
.class-collective-goal-status > div { display: grid; gap: 2px; min-width: 0; }
.class-collective-goal-status strong { color: #29574e; }
.class-collective-goal-status small { color: var(--manager-muted, #496b95); overflow-wrap: anywhere; }
.class-collective-goal.is-unlocked .class-collective-goal-status { border-color: rgba(215, 155, 20, .38); background: #fff8d8; }
.class-collective-goal.is-unlocked .class-collective-goal-status-icon { background: #ffcf4f; color: #674800; animation: collectiveGoalCelebrate 1.2s ease-in-out infinite; }
@keyframes collectiveGoalCelebrate { 0%, 100% { transform: rotate(-5deg) scale(1); } 50% { transform: rotate(5deg) scale(1.12); } }
.scoring-mode-bar, .scoring-buffer-status {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}
.scoring-mode-help { margin: 0; color: var(--manager-muted, #496b95); line-height: 1.6; }
body.cm-theme .scoring-panel .scoring-mode-toggle {
  margin-left: auto !important;
  white-space: normal;
  min-height: 44px !important;
}
.scoring-buffer-status {
  padding: 12px 16px;
  background: #fff8d8;
  border: 2px solid #d3ad42;
  border-radius: 12px;
  color: #17325f;
  line-height: 1.6;
}
.scoring-panel .scoring-student-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 200px), 1fr));
  gap: 16px;
  align-items: start;
}
.scoring-panel.is-detailed .scoring-student-grid {
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 300px), 1fr));
}
.scoring-panel .student-card { min-width: 0; height: auto; }
.scoring-panel .student-card-header { gap: 8px; }
.scoring-panel .student-card-header .student-name {
  white-space: normal;
  overflow: visible;
  text-overflow: clip;
  overflow-wrap: anywhere;
  line-height: 1.5;
  min-width: 0;
}
.scoring-panel .edit-student-btn { flex: 0 0 44px; min-height: 44px; }
.scoring-panel .student-card-score-main-actions .score-btn { min-height: 48px; }
.scoring-panel .student-card-token-preview {
  margin-top: 12px;
  text-align: center;
  color: var(--manager-muted, #496b95);
  font-size: 14px;
}
.scoring-panel .student-card-score-tools { display: flex; flex-wrap: wrap; gap: 6px; }
.scoring-panel .student-card-score-chip { min-height: 44px; height: auto; white-space: normal; }
.scoring-panel .student-card-detail-tools { margin-top: 16px; }
.scoring-panel .scoring-behavior-settings summary { flex-wrap: wrap; line-height: 1.6; }
.scoring-panel .student-card-token-adjuster summary { flex-wrap: wrap; white-space: normal; line-height: 1.5; }
.scoring-panel .student-card-custom-score, .scoring-panel .student-card-custom-token { min-width: 0; }
.scoring-panel .student-card-custom-score input, .scoring-panel .student-card-custom-token input { min-width: 0; }
.blackboard-page .blackboard-workspace-layout {
  display: grid !important;
  grid-template-columns: minmax(0, 1fr) !important;
  gap: clamp(18px, 2vw, 28px) !important;
  min-width: 0;
}
.blackboard-page .blackboard-settings-grid {
  min-width: 0;
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  align-items: start;
  gap: 14px;
}
.blackboard-page .blackboard-settings-grid > * { min-width: 0; }
.blackboard-page .blackboard-settings-grid .blackboard-tabs { grid-column: 1 / -1; }
.blackboard-page .blackboard-settings-grid .blackboard-contact-widget-panel,
.blackboard-page .blackboard-settings-grid .blackboard-correction-settings-panel,
.blackboard-page .blackboard-settings-grid .blackboard-todo-quest-panel,
.blackboard-page .blackboard-settings-grid .blackboard-date-panel,
.blackboard-page .blackboard-settings-grid .blackboard-cloud-panel,
.blackboard-page .blackboard-settings-grid .blackboard-duty-editor-panel { grid-column: span 4; }
.blackboard-page .blackboard-settings-grid .blackboard-content-panel { grid-column: span 8; }
.blackboard-page .blackboard-settings-grid .blackboard-layout-panel { grid-column: 1 / -1; }
.blackboard-page .blackboard-layout-panel .panel-body {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  column-gap: 18px;
}
.blackboard-page .blackboard-layout-panel .panel-body > .reset-btn { grid-column: 1 / -1; }
.blackboard-page .board-wrap {
  min-width: 0;
  width: 100%;
}
.blackboard-orientation { display: flex; flex-wrap: wrap; gap: 8px; }
.blackboard-orientation .btn { min-height: 44px; white-space: normal; }
.blackboard-horizontal-content { color: #fff8dc; padding: 0 8px 16px 0; }
.blackboard-horizontal-date, .blackboard-horizontal-line, .blackboard-horizontal-duty {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 4px 2px;
  line-height: var(--bb-line-height, 1.55);
}
.blackboard-horizontal-date { border-bottom: 2px dashed rgba(255,248,220,.3); padding-bottom: 12px; margin-bottom: 12px; }
.blackboard-horizontal-line { padding: 5px 0; }
.blackboard-horizontal-run { white-space: pre-wrap; overflow-wrap: anywhere; max-width: 100%; font-weight: 900; }
.blackboard-page .is-horizontal .blackboard-writing-area { scrollbar-color: #ddd2a0 transparent; scrollbar-width: thin; }
.blackboard-page .is-horizontal .blackboard-writing-area:focus-visible { outline: 2px solid #ffe484; outline-offset: 3px; }
.blackboard-page .is-horizontal .blackboard-duty-badge { max-height: 66px; overflow-y: auto !important; pointer-events: auto !important; }
.blackboard-page .info-bar { flex-wrap: wrap; gap: 8px 16px; }
@media (max-width: 1000px) {
  .blackboard-page .blackboard-settings-grid .blackboard-contact-widget-panel,
  .blackboard-page .blackboard-settings-grid .blackboard-correction-settings-panel,
  .blackboard-page .blackboard-settings-grid .blackboard-todo-quest-panel,
  .blackboard-page .blackboard-settings-grid .blackboard-date-panel,
  .blackboard-page .blackboard-settings-grid .blackboard-cloud-panel,
  .blackboard-page .blackboard-settings-grid .blackboard-duty-editor-panel,
  .blackboard-page .blackboard-settings-grid .blackboard-content-panel { grid-column: span 6; }
}
@media (max-width: 720px) {
  .blackboard-page .blackboard-settings-grid > * { grid-column: 1 / -1 !important; }
  .blackboard-page .blackboard-layout-panel .panel-body { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 520px) {
  .class-collective-goal { padding: 17px; border-radius: 18px; }
  .class-collective-goal-heading { flex-direction: column; gap: 14px; }
  .class-collective-goal-switch { width: 100%; min-width: 0; }
  .class-collective-goal-body { grid-template-columns: minmax(0, 1fr); }
  .class-collective-total { min-height: 145px; }
  .class-collective-goal-fields { grid-template-columns: minmax(0, 1fr); }
  .scoring-panel .scoring-student-grid { grid-template-columns: minmax(0, 1fr); }
  .scoring-mode-bar { align-items: flex-start; }
  .scoring-mode-toggle { max-width: 100%; }
  .scoring-buffer-status .btn { min-height: 44px; }
}

@media (prefers-reduced-motion: reduce) {
  .class-collective-goal.is-unlocked .class-collective-goal-status-icon { animation: none; }
  .class-collective-progress-track i { transition: none; }
}

/* Teacher quick dock and reusable horizontal instruction boards. */
@keyframes quickDockPulse {
  0%, 100% { transform: scale(1); box-shadow: 0 12px 30px rgba(38, 74, 66, .3), 0 0 0 0 rgba(255, 207, 79, .34); }
  50% { transform: scale(1.035); box-shadow: 0 15px 36px rgba(38, 74, 66, .34), 0 0 0 9px rgba(255, 207, 79, 0); }
}

@keyframes quickDisplayArrive {
  from { opacity: 0; transform: scale(.982); }
  to { opacity: 1; transform: scale(1); }
}

@keyframes quickDisplayTimeUp {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.06); }
}

.teacher-quick-dock {
  position: fixed;
  top: 50%;
  right: 18px;
  z-index: 12900;
  width: 62px;
  height: 62px;
  transform: translateY(-50%);
  isolation: isolate;
}

.teacher-quick-dock-trigger {
  position: relative;
  z-index: 2;
  width: 62px;
  height: 62px;
  display: grid;
  place-items: center;
  padding: 0;
  border: 2px solid rgba(255, 255, 255, .72);
  border-radius: 50%;
  color: #fff8dc;
  background:
    radial-gradient(circle at 34% 28%, rgba(255, 255, 255, .22), transparent 25%),
    linear-gradient(145deg, #2f776d, #173f36);
  cursor: pointer;
  animation: quickDockPulse 3.4s ease-in-out infinite;
  transition: transform .34s var(--cm-motion), background .25s ease;
}

.teacher-quick-dock.is-open .teacher-quick-dock-trigger {
  transform: scale(.94);
  background: linear-gradient(145deg, #8d6041, #5e3e2b);
  animation: none;
}

.teacher-quick-dock-trigger:hover {
  transform: translateX(-2px) scale(1.045);
}

.teacher-quick-dock.is-open .teacher-quick-dock-trigger:hover {
  transform: translateX(-2px) scale(.97);
}

.teacher-quick-dock-trigger:focus-visible {
  outline: 4px solid #ffcf4f;
  outline-offset: 4px;
}

.teacher-quick-dock-mark {
  position: relative;
  width: 34px;
  height: 32px;
  display: block;
  filter: drop-shadow(0 2px 2px rgba(0, 0, 0, .2));
}

.teacher-quick-board-icon {
  position: absolute;
  top: 2px;
  left: 2px;
  display: block;
  width: 30px;
  height: 23px;
  border: 3px solid #e5bc78;
  border-radius: 5px;
  background: linear-gradient(155deg, #174238, #102e27);
  box-shadow: inset 0 0 0 1px rgba(255, 248, 220, .16), 0 2px 0 #8d6041;
}

.teacher-quick-board-icon::before,
.teacher-quick-board-icon::after {
  content: "";
  position: absolute;
  left: 5px;
  height: 2px;
  border-radius: 999px;
  background: rgba(255, 248, 220, .9);
  transform: rotate(-3deg);
}

.teacher-quick-board-icon::before {
  top: 6px;
  width: 15px;
}

.teacher-quick-board-icon::after {
  top: 12px;
  width: 10px;
  opacity: .72;
}

.teacher-quick-chalk-icon {
  position: absolute;
  right: 2px;
  bottom: 2px;
  display: block;
  width: 13px;
  height: 3px;
  border-radius: 999px;
  background: #fff2c9;
  box-shadow: 0 1px 0 rgba(0, 0, 0, .24);
  transform: rotate(-9deg);
}

.homework-title-edit-trigger {
  border-color: rgba(47, 119, 109, .32) !important;
  background: linear-gradient(180deg, rgba(255, 255, 255, .94), rgba(226, 245, 239, .9)) !important;
  color: #235f56 !important;
  font-weight: 900;
}

.homework-edit-pencil {
  display: inline-grid;
  width: 24px;
  height: 24px;
  place-items: center;
  border: 2px solid rgba(35, 95, 86, .22);
  border-radius: 8px;
  background: #fff;
  font-size: 16px;
  line-height: 1;
  transform: rotate(-6deg);
}

.homework-title-edit-modal {
  width: min(560px, 100%);
  border: 2px solid rgba(47, 119, 109, .22);
  background:
    linear-gradient(135deg, rgba(255, 255, 255, .96), rgba(239, 249, 245, .94)),
    repeating-linear-gradient(0deg, rgba(47, 119, 109, .04) 0 1px, transparent 1px 28px);
}

.homework-edit-modal-heading {
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr);
  gap: 14px;
  align-items: center;
  margin-bottom: 18px;
}

.homework-edit-modal-heading .modal-title {
  margin: 0 0 4px;
}

.homework-edit-modal-heading p {
  margin: 0;
  color: var(--manager-muted);
  font-size: 13px;
  font-weight: 800;
  line-height: 1.55;
}

.homework-edit-modal-icon {
  display: grid;
  width: 52px;
  height: 52px;
  place-items: center;
  border: 3px solid #17325f;
  border-radius: 15px;
  background: #ffcf4f;
  color: #17325f;
  box-shadow: 0 4px #17325f;
  font-size: 28px;
  font-weight: 950;
  transform: rotate(-4deg);
}

.homework-edit-field {
  position: relative;
  margin-bottom: 18px;
}

.homework-edit-field input {
  min-height: 52px;
  padding-right: 74px;
  border: 2px solid rgba(47, 119, 109, .3);
  background: rgba(255, 255, 255, .94);
  font-size: 18px;
  font-weight: 900;
}

.homework-edit-field input:focus {
  outline: 4px solid rgba(255, 207, 79, .36);
  border-color: #2f776d;
}

.homework-edit-character-count {
  position: absolute;
  right: 13px;
  bottom: 15px;
  color: var(--manager-muted);
  font-size: 11px;
  font-weight: 900;
  pointer-events: none;
}

@media (max-width: 620px) {
  .homework-edit-modal-heading {
    grid-template-columns: 44px minmax(0, 1fr);
  }

  .homework-edit-modal-icon {
    width: 44px;
    height: 44px;
    border-radius: 13px;
    font-size: 23px;
  }
}

.teacher-quick-dock-menu {
  position: absolute;
  top: 50%;
  right: 76px;
  width: min(292px, calc(100vw - 104px));
  max-height: min(72vh, 620px);
  overflow-y: auto;
  display: grid;
  gap: 8px;
  padding: 10px;
  border: 1px solid rgba(105, 77, 58, .18);
  border-radius: 22px;
  background: rgba(250, 246, 238, .94);
  box-shadow: 0 24px 70px rgba(54, 39, 30, .24), inset 0 1px rgba(255, 255, 255, .9);
  backdrop-filter: blur(22px) saturate(150%);
  -webkit-backdrop-filter: blur(22px) saturate(150%);
  opacity: 0;
  pointer-events: none;
  transform: translate(18px, -50%) scale(.96);
  transform-origin: right center;
  transition: opacity .22s ease, transform .34s var(--cm-motion);
}

.teacher-quick-dock.is-open .teacher-quick-dock-menu {
  opacity: 1;
  pointer-events: auto;
  transform: translate(0, -50%) scale(1);
}

.teacher-quick-dock-command {
  width: 100%;
  min-height: 58px;
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  border: 1px solid rgba(47, 119, 109, .16);
  border-radius: 15px;
  color: #2d211c;
  text-align: left;
  background: linear-gradient(135deg, rgba(255, 255, 255, .95), rgba(237, 247, 243, .88));
  cursor: pointer;
  opacity: 0;
  transform: translateX(14px);
  transition: transform .24s var(--cm-motion), opacity .2s ease, border-color .2s ease, box-shadow .2s ease;
}

.teacher-quick-dock.is-open .teacher-quick-dock-command {
  opacity: 1;
  transform: translateX(0);
  transition-delay: calc(var(--dock-order, 0) * 38ms);
}

.teacher-quick-dock-command:hover,
.teacher-quick-dock-command:focus-visible {
  border-color: rgba(47, 119, 109, .46);
  box-shadow: 0 9px 22px rgba(47, 119, 109, .13);
  transform: translateX(-3px);
  outline: none;
}

.teacher-quick-dock-command.is-empty {
  border-style: dashed;
  background: rgba(255, 255, 255, .72);
}

.teacher-quick-dock-command-icon {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border-radius: 13px;
  color: #fff8dc;
  background: #245e53;
  font-family: Georgia, serif;
  font-size: 15px;
  font-weight: 900;
}

.teacher-quick-dock-command > span:last-child {
  min-width: 0;
  display: grid;
  gap: 2px;
}

.teacher-quick-dock-command strong,
.teacher-quick-dock-command small { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.teacher-quick-dock-command strong { font-size: 14px; font-weight: 950; }
.teacher-quick-dock-command small { color: #74615a; font-size: 11px; font-weight: 800; }

.teacher-quick-dock-tools {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 6px;
  padding-top: 8px;
  border-top: 1px solid rgba(105, 77, 58, .14);
  opacity: 0;
  transform: translateX(12px);
  transition: opacity .2s ease, transform .28s var(--cm-motion);
}

.teacher-quick-dock.is-open .teacher-quick-dock-tools {
  opacity: 1;
  transform: translateX(0);
  transition-delay: calc(var(--dock-order, 1) * 38ms);
}

.teacher-quick-dock-tools button {
  min-width: 0;
  min-height: 54px;
  display: grid;
  place-items: center;
  gap: 1px;
  padding: 6px 3px;
  border: 1px solid rgba(105, 77, 58, .14);
  border-radius: 12px;
  color: #6f4e37;
  background: rgba(255, 255, 255, .72);
  font-weight: 950;
  cursor: pointer;
}

.teacher-quick-dock-tools button:hover,
.teacher-quick-dock-tools button:focus-visible { background: #fff; outline: 3px solid rgba(255, 207, 79, .45); }
.teacher-quick-dock-tools span { max-width: 100%; overflow: hidden; text-overflow: ellipsis; font-size: 9px; white-space: nowrap; }

.quick-display-editor-backdrop {
  position: fixed;
  inset: 0;
  z-index: 31000;
  display: grid;
  place-items: center;
  padding: 20px;
  background: rgba(35, 25, 20, .48);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.quick-display-editor {
  width: min(940px, 100%);
  max-height: calc(100dvh - 40px);
  overflow: auto;
  display: grid;
  gap: 18px;
  padding: 24px;
  border-radius: 28px;
  background: rgba(250, 246, 238, .96);
  animation: quickDisplayArrive .28s var(--cm-motion) both;
}

.quick-display-editor-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
}

.quick-display-editor-header h2 { margin: 4px 0 6px; color: #2d211c; font-size: clamp(24px, 3vw, 36px); }
.quick-display-editor-header p { max-width: 650px; margin: 0; color: #74615a; line-height: 1.65; }
.quick-display-editor-close,
.quick-display-live-close {
  flex: 0 0 auto;
  width: 44px;
  height: 44px;
  border: 1px solid rgba(105, 77, 58, .17);
  border-radius: 50%;
  color: inherit;
  background: rgba(255, 255, 255, .72);
  font-size: 26px;
  line-height: 1;
  cursor: pointer;
}

.quick-display-library {
  display: grid;
  gap: 9px;
  padding: 13px;
  border: 1px solid rgba(105, 77, 58, .13);
  border-radius: 18px;
  background: rgba(255, 255, 255, .48);
}

.quick-display-library-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.quick-display-library-head strong { color: #2d211c; }
.quick-display-library-head span { color: #74615a; font-size: 12px; font-weight: 800; }
.quick-display-library-list { display: flex; gap: 8px; overflow-x: auto; padding: 2px 1px 5px; }
.quick-display-library-item {
  flex: 0 0 auto;
  min-height: 42px;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 8px 12px;
  border: 1px solid rgba(47, 119, 109, .18);
  border-radius: 12px;
  color: #285d55;
  background: #fff;
  cursor: pointer;
}

.quick-display-library-item.is-active { color: #fff8dc; background: #2f776d; border-color: #2f776d; }
.quick-display-library-item.is-new { border-style: dashed; color: #6f4e37; }

.quick-display-form {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.quick-display-field,
.quick-display-choice-field,
.quick-display-widget-field { min-width: 0; margin: 0; }
.quick-display-field { display: grid; gap: 7px; align-content: start; }
.quick-display-field > span,
.quick-display-choice-field legend,
.quick-display-widget-field legend { color: #5d4a42; font-size: 13px; font-weight: 950; }
.quick-display-field input,
.quick-display-field textarea,
.quick-display-countdown-field input {
  width: 100%;
  min-width: 0;
  border: 1px solid rgba(105, 77, 58, .2);
  border-radius: 14px;
  color: #2d211c;
  background: rgba(255, 255, 255, .9);
  outline: none;
}
.quick-display-field input { min-height: 48px; padding: 10px 13px; }
.quick-display-field textarea { min-height: 170px; padding: 13px; resize: vertical; line-height: 1.7; }
.quick-display-field input:focus,
.quick-display-field textarea:focus,
.quick-display-countdown-field input:focus { border-color: #2f776d; box-shadow: 0 0 0 4px rgba(47, 119, 109, .12); }
.quick-display-field small { justify-self: end; color: #8a756d; font-size: 11px; }
.quick-display-text-field { grid-row: span 3; }

.quick-display-choice-field,
.quick-display-widget-field {
  display: grid;
  gap: 8px;
  padding: 12px;
  border: 1px solid rgba(105, 77, 58, .14);
  border-radius: 16px;
}

.quick-display-choice-row { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 7px; }
.quick-display-choice {
  min-height: 40px;
  padding: 7px;
  border: 2px solid transparent;
  border-radius: 11px;
  color: #5d4a42;
  background: rgba(255, 255, 255, .72);
  font-size: 12px;
  font-weight: 900;
  cursor: pointer;
}
.quick-display-choice.theme-chalk { color: #fff8dc; background: #1a3c23; }
.quick-display-choice.theme-midnight { color: #eef7ff; background: #152c4b; }
.quick-display-choice.theme-paper { color: #382a22; background: #f7e9c7; }
.quick-display-choice.is-active { border-color: #ffcf4f; box-shadow: 0 0 0 2px #6f4e37; }

.quick-display-font-scale-row {
  min-width: 0;
  display: grid;
  grid-template-columns: minmax(140px, .8fr) minmax(150px, 1.2fr) 58px;
  align-items: center;
  gap: 10px;
  padding: 10px 11px;
  border-radius: 12px;
  background: rgba(47, 119, 109, .07);
}
.quick-display-font-scale-row > span { min-width: 0; display: grid; gap: 2px; }
.quick-display-font-scale-row strong { color: #2d211c; font-size: 12px; }
.quick-display-font-scale-row small { color: #74615a; font-size: 10px; line-height: 1.35; }
.quick-display-font-scale-row input[type="range"] { width: 100%; min-width: 0; accent-color: #2f776d; cursor: pointer; }
.quick-display-font-scale-row output {
  min-width: 54px;
  padding: 5px 7px;
  border: 1px solid rgba(47, 119, 109, .2);
  border-radius: 9px;
  color: #235f56;
  background: rgba(255, 255, 255, .8);
  font-size: 12px;
  font-weight: 950;
  text-align: center;
}

.quick-display-widget-field { grid-column: 2; }
.quick-display-widget-option {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: center;
  gap: 10px;
  min-height: 52px;
  padding: 8px 10px;
  border: 1px solid rgba(47, 119, 109, .14);
  border-radius: 12px;
  background: rgba(255, 255, 255, .62);
  cursor: pointer;
}
.quick-display-widget-option input { width: 20px; height: 20px; accent-color: #2f776d; }
.quick-display-widget-option > span { display: grid; gap: 2px; }
.quick-display-widget-option strong { color: #2d211c; font-size: 13px; }
.quick-display-widget-option small { color: #74615a; font-size: 11px; }
.quick-display-countdown-field { display: grid; grid-template-columns: minmax(0, 1fr) 82px auto; align-items: center; gap: 8px; color: #5d4a42; font-size: 12px; font-weight: 900; }
.quick-display-countdown-field input { min-height: 38px; padding: 6px 9px; text-align: center; }

.quick-display-editor-actions { display: flex; align-items: center; justify-content: flex-end; gap: 8px; flex-wrap: wrap; }
.quick-display-action-spacer { flex: 1 1 auto; }
.quick-display-delete { color: #a94338 !important; border-color: rgba(169, 67, 56, .26) !important; background: rgba(255, 244, 242, .9) !important; }

.quick-display-stage {
  --quick-board-bg: #183c2a;
  --quick-board-ink: #fff8dc;
  --quick-board-soft: rgba(255, 248, 220, .68);
  --quick-board-accent: #ffdf75;
  position: fixed;
  inset: 0;
  z-index: 45000;
  display: grid;
  place-items: stretch;
  padding: clamp(8px, 1.6vw, 22px);
  color: var(--quick-board-ink);
  background: #231a16;
  animation: quickDisplayArrive .32s var(--cm-motion) both;
}

.quick-display-stage.theme-midnight {
  --quick-board-bg: #142b49;
  --quick-board-ink: #eef7ff;
  --quick-board-soft: rgba(238, 247, 255, .68);
  --quick-board-accent: #7ed7ff;
  background: #0b1728;
}

.quick-display-stage.theme-paper {
  --quick-board-bg: #f5e7c4;
  --quick-board-ink: #382a22;
  --quick-board-soft: rgba(56, 42, 34, .63);
  --quick-board-accent: #9c4f2f;
  background: #5f4532;
}

.quick-display-board {
  position: relative;
  min-width: 0;
  min-height: 0;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto;
  gap: clamp(10px, 1.8vh, 22px);
  padding: clamp(18px, 2.8vw, 46px);
  border: clamp(7px, .8vw, 13px) solid #8d6343;
  border-radius: clamp(10px, 1.6vw, 24px);
  background:
    linear-gradient(90deg, rgba(255, 255, 255, .027) 1px, transparent 1px),
    linear-gradient(0deg, rgba(255, 255, 255, .025) 1px, transparent 1px),
    radial-gradient(circle at 20% 15%, rgba(255, 255, 255, .055), transparent 35%),
    var(--quick-board-bg);
  background-size: 42px 42px, 42px 42px, auto, auto;
  box-shadow: inset 0 0 70px rgba(0, 0, 0, .27), inset 0 0 0 2px rgba(255, 255, 255, .06), 0 30px 90px rgba(0, 0, 0, .42);
  overflow: hidden;
}

.theme-paper .quick-display-board {
  border-color: #a9784b;
  background:
    linear-gradient(rgba(125, 93, 62, .07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(125, 93, 62, .055) 1px, transparent 1px),
    var(--quick-board-bg);
  background-size: 34px 34px;
  box-shadow: inset 0 0 70px rgba(93, 63, 39, .12), 0 30px 90px rgba(0, 0, 0, .38);
}

.quick-display-live-header {
  min-width: 0;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px;
  padding-bottom: clamp(9px, 1.3vh, 16px);
  border-bottom: 2px dashed var(--quick-board-soft);
}

.quick-display-live-title { min-width: 0; display: grid; gap: 3px; }
.quick-display-live-title span { color: var(--quick-board-soft); font-size: clamp(10px, 1.1vw, 15px); font-weight: 900; letter-spacing: .14em; }
.quick-display-live-title strong { overflow: hidden; text-overflow: ellipsis; color: var(--quick-board-accent); font-size: clamp(24px, 3.7vw, 56px); line-height: 1.08; white-space: nowrap; }
.quick-display-live-widgets { flex: 0 0 auto; display: flex; align-items: stretch; justify-content: flex-end; gap: 9px; }
.quick-display-live-widget {
  min-width: clamp(96px, 12vw, 170px);
  display: grid;
  place-items: center;
  gap: 2px;
  padding: clamp(7px, 1vw, 13px) clamp(10px, 1.3vw, 18px);
  border: 2px solid var(--quick-board-soft);
  border-radius: 15px;
  background: rgba(0, 0, 0, .08);
  text-align: center;
}
.theme-paper .quick-display-live-widget { background: rgba(255, 255, 255, .22); }
.quick-display-live-widget span { color: var(--quick-board-soft); font-size: clamp(9px, .9vw, 13px); font-weight: 900; }
.quick-display-live-widget strong { color: var(--quick-board-accent); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: clamp(22px, 3vw, 46px); line-height: 1; font-variant-numeric: tabular-nums; }
.quick-display-live-close { align-self: center; color: var(--quick-board-ink); border-color: var(--quick-board-soft); background: rgba(0, 0, 0, .1); }

.quick-display-live-copy {
  min-width: 0;
  min-height: 0;
  overflow: auto;
  display: grid;
  place-items: center;
  padding: clamp(8px, 2vw, 30px);
  color: var(--quick-board-ink);
  font-family: 'DFKai-SB', 'BiauKai', 'Noto Serif TC', serif;
  font-size: clamp(2.4rem, 7vw, 8.3rem);
  font-weight: 900;
  line-height: 1.24;
  letter-spacing: .035em;
  text-align: center;
  text-shadow: 0 3px 0 rgba(0, 0, 0, .22), 0 0 24px rgba(255, 248, 220, .08);
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}
.theme-paper .quick-display-live-copy { text-shadow: 0 2px rgba(255, 255, 255, .48); }
.quick-display-stage.size-large .quick-display-live-copy { font-size: clamp(3rem, 8.8vw, 10rem); }
.quick-display-stage.size-huge .quick-display-live-copy { font-size: clamp(3.4rem, 11vw, 12rem); line-height: 1.12; }
.quick-display-live-footer { display: flex; align-items: center; justify-content: space-between; gap: 16px; color: var(--quick-board-soft); font-size: clamp(10px, 1vw, 14px); font-weight: 900; letter-spacing: .08em; }
.quick-display-stage.is-time-up .quick-display-live-widget.is-countdown { border-color: var(--quick-board-accent); background: rgba(255, 207, 79, .12); animation: quickDisplayTimeUp .8s ease-in-out infinite; }

@media (max-width: 700px) {
  .teacher-quick-dock { right: 10px; }
  .teacher-quick-dock-menu { right: 70px; }
  .quick-display-editor-backdrop { padding: 10px; }
  .quick-display-editor { max-height: calc(100dvh - 20px); padding: 17px; border-radius: 20px; }
  .quick-display-form { grid-template-columns: minmax(0, 1fr); }
  .quick-display-text-field { grid-row: auto; }
  .quick-display-widget-field { grid-column: auto; }
  .quick-display-editor-actions .cm-button { flex: 1 1 130px; }
  .quick-display-action-spacer { display: none; }
  .quick-display-live-header { align-items: stretch; flex-direction: column; gap: 10px; }
  .quick-display-live-widgets { justify-content: stretch; }
  .quick-display-live-widget { flex: 1 1 0; min-width: 0; }
  .quick-display-live-title strong { white-space: normal; }
  .quick-display-live-copy { font-size: clamp(2rem, 10vw, 5.5rem); }
  .quick-display-stage.size-large .quick-display-live-copy { font-size: clamp(2.5rem, 12vw, 6.5rem); }
  .quick-display-stage.size-huge .quick-display-live-copy { font-size: clamp(3rem, 15vw, 7.5rem); }
  .quick-display-font-scale-row { grid-template-columns: minmax(0, 1fr) 58px; }
  .quick-display-font-scale-row > span { grid-column: 1 / -1; }
}

@media (prefers-reduced-motion: reduce) {
  .teacher-quick-dock-trigger,
  .quick-display-stage.is-time-up .quick-display-live-widget.is-countdown { animation: none; }
  .teacher-quick-dock-menu,
  .teacher-quick-dock-command,
  .teacher-quick-dock-tools,
  .quick-display-stage,
  .quick-display-editor { transition-duration: .01ms; animation-duration: .01ms; }
}

/* Contact-book blackboard time widget. */
.blackboard-contact-widget-panel {
  display: grid;
  gap: 12px;
  padding: 16px;
  background: rgba(255, 255, 255, .52);
}

.blackboard-contact-widget-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

.blackboard-contact-widget-head > div { display: grid; gap: 3px; }
.blackboard-contact-widget-head strong { color: var(--manager-ink); font-size: 14px; font-weight: 950; }
.blackboard-contact-widget-head > span {
  flex: 0 0 auto;
  padding: 4px 8px;
  border-radius: 999px;
  background: rgba(47, 119, 109, .12);
  color: #24665d;
  font-size: 10px;
  font-weight: 950;
}

.blackboard-contact-widget-help {
  margin: 0;
  color: var(--manager-muted);
  font-size: 11px;
  font-weight: 750;
  line-height: 1.55;
}

.blackboard-contact-widget-switches { display: grid; gap: 8px; }
.blackboard-contact-widget-switch-row {
  min-width: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 11px;
  border: 1px solid rgba(47, 119, 109, .16);
  border-radius: 14px;
  background: rgba(255, 255, 255, .66);
}

.blackboard-contact-widget-switch-row > div { min-width: 0; display: grid; gap: 2px; }
.blackboard-contact-widget-switch-row strong { color: var(--manager-ink); font-size: 12px; font-weight: 950; }
.blackboard-contact-widget-switch-row span { color: var(--manager-muted); font-size: 10px; font-weight: 800; }

.blackboard-contact-countdown-settings { display: grid; gap: 10px; }
.blackboard-contact-duration-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.blackboard-contact-duration-grid label { display: grid; gap: 5px; }
.blackboard-contact-duration-grid label > span { color: var(--manager-muted); font-size: 10px; font-weight: 900; }
.blackboard-contact-duration-grid input {
  width: 100%;
  min-width: 0;
  min-height: 40px;
  padding: 7px 9px;
  border: 2px solid rgba(47, 119, 109, .2);
  border-radius: 11px;
  background: rgba(255, 255, 255, .9);
  color: var(--manager-ink);
  font-size: 18px;
  font-weight: 950;
  text-align: center;
}

.blackboard-contact-widget-preview {
  min-height: 68px;
  display: grid;
  place-items: center;
  gap: 3px;
  padding: 10px;
  border: 2px solid #17325f;
  border-radius: 14px;
  background: linear-gradient(145deg, #153f35, #102f29);
  color: #fff8dc;
  box-shadow: 0 4px 0 #17325f;
  text-align: center;
}

.blackboard-contact-widget-preview span { color: rgba(255, 248, 220, .72); font-size: 10px; font-weight: 900; }
.blackboard-contact-widget-preview strong {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 25px;
  font-weight: 950;
  font-variant-numeric: tabular-nums;
  line-height: 1;
}

.blackboard-contact-widget-preview.is-time-up { border-color: #a63029; background: #8c3029; box-shadow: 0 4px 0 #5e211d; }
.blackboard-contact-countdown-actions { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.blackboard-contact-countdown-actions .cm-button { min-height: 40px; font-size: 12px; font-weight: 950; }

.blackboard-correction-settings-panel {
  display: grid;
  align-content: start;
  gap: 12px;
  padding: 16px;
  background: rgba(255, 255, 255, .52);
}

.blackboard-correction-settings-head {
  min-width: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 14px;
}
.blackboard-correction-settings-head > div { min-width: 0; display: grid; gap: 3px; }
.blackboard-correction-settings-head strong { color: var(--manager-ink); font-size: 14px; font-weight: 950; }
.blackboard-correction-settings-head span { color: var(--manager-muted); font-size: 10px; font-weight: 800; line-height: 1.45; }
.blackboard-correction-settings-summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 10px 12px;
  border: 1px solid rgba(190, 85, 62, .2);
  border-radius: 13px;
  background: linear-gradient(135deg, rgba(255, 247, 228, .86), rgba(255, 230, 220, .66));
}
.blackboard-correction-settings-summary span { color: #805447; font-size: 11px; font-weight: 900; }
.blackboard-correction-settings-summary strong { color: #a23e32; font-size: 13px; font-weight: 950; }

.blackboard-correction-list {
  position: absolute;
  z-index: 8;
  min-width: 0;
  min-height: 0;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  gap: clamp(6px, .8vw, 11px);
  padding: clamp(8px, 1.1vw, 16px);
  border: 2px solid rgba(255, 226, 161, .68);
  border-radius: clamp(12px, 1.2vw, 19px);
  background:
    linear-gradient(180deg, rgba(75, 26, 21, .9), rgba(41, 20, 18, .88)),
    repeating-linear-gradient(0deg, transparent 0 28px, rgba(255, 248, 220, .05) 28px 29px);
  color: #fff8dc;
  box-shadow: inset 0 0 28px rgba(255, 222, 145, .06), 0 10px 30px rgba(0, 0, 0, .26);
  font-family: 'Noto Sans TC', sans-serif;
  overflow: hidden;
  text-shadow: 0 2px 4px rgba(0, 0, 0, .32);
}

.blackboard-correction-list-head {
  min-width: 0;
  display: grid;
  gap: 2px;
  padding-bottom: clamp(6px, .7vw, 10px);
  border-bottom: 2px dashed rgba(255, 248, 220, .28);
}
.blackboard-correction-list-head > span { color: #ffcf9f; font-size: clamp(7px, .72vw, 11px); font-weight: 950; letter-spacing: .12em; }
.blackboard-correction-list-head > strong { overflow: hidden; text-overflow: ellipsis; color: #ffe6aa; font-size: clamp(15px, 1.7vw, 27px); font-weight: 950; white-space: nowrap; }
.blackboard-correction-list-head > small { color: rgba(255, 248, 220, .72); font-size: clamp(8px, .78vw, 12px); font-weight: 900; }

.blackboard-correction-list-body {
  min-height: 0;
  overflow-y: auto;
  overflow-x: hidden;
  display: grid;
  align-content: start;
  gap: clamp(7px, .8vw, 12px);
  padding-right: 4px;
  scrollbar-width: thin;
  scrollbar-color: rgba(255, 226, 161, .58) transparent;
}
.blackboard-correction-list-body::-webkit-scrollbar { width: 6px; }
.blackboard-correction-list-body::-webkit-scrollbar-thumb { border-radius: 999px; background: rgba(255, 226, 161, .58); }
.blackboard-correction-homework {
  min-width: 0;
  display: grid;
  gap: 6px;
  padding: clamp(7px, .8vw, 11px);
  border: 1px solid rgba(255, 248, 220, .2);
  border-radius: clamp(9px, .9vw, 14px);
  background: rgba(255, 248, 220, .07);
}
.blackboard-correction-homework-title { min-width: 0; display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: start; gap: 7px; }
.blackboard-correction-homework-title strong { overflow-wrap: anywhere; color: #fff5d5; font-size: clamp(10px, 1.1vw, 17px); line-height: 1.35; }
.blackboard-correction-homework-title span {
  display: grid;
  width: clamp(20px, 2vw, 28px);
  height: clamp(20px, 2vw, 28px);
  place-items: center;
  border-radius: 50%;
  background: #ffcf75;
  color: #4b1a15;
  font-size: clamp(9px, .9vw, 13px);
  font-weight: 950;
  text-shadow: none;
}
.blackboard-correction-homework ol { min-width: 0; display: grid; gap: 4px; margin: 0; padding: 0; list-style: none; }
.blackboard-correction-homework li {
  min-width: 0;
  display: grid;
  grid-template-columns: clamp(25px, 2.5vw, 38px) minmax(0, 1fr);
  align-items: center;
  gap: 6px;
  color: rgba(255, 248, 220, .88);
  font-size: clamp(9px, .9vw, 14px);
  line-height: 1.25;
}
.blackboard-correction-homework li > strong {
  display: grid;
  min-height: clamp(22px, 2.1vw, 31px);
  place-items: center;
  border: 1px solid rgba(255, 248, 220, .55);
  border-radius: 8px;
  background: rgba(255, 248, 220, .9);
  color: #4b1a15;
  font-weight: 950;
  text-shadow: none;
}
.blackboard-correction-homework li > span { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.blackboard-correction-empty { min-height: 0; display: grid; place-items: center; align-content: center; gap: 8px; color: rgba(255, 248, 220, .75); text-align: center; }
.blackboard-correction-empty strong { color: #9ce6b7; font-size: clamp(24px, 3vw, 48px); }
.blackboard-correction-empty span { font-size: clamp(9px, .95vw, 14px); font-weight: 900; }

.blackboard-contact-time-widget {
  position: absolute;
  top: clamp(14px, 2vw, 28px);
  left: clamp(14px, 2vw, 28px);
  z-index: 9;
  min-width: clamp(155px, 20vw, 270px);
  display: grid;
  justify-items: center;
  gap: 2px;
  padding: clamp(8px, 1.2vw, 15px) clamp(12px, 1.6vw, 22px);
  border: 2px solid rgba(255, 248, 220, .6);
  border-radius: clamp(12px, 1.4vw, 20px);
  background: rgba(3, 24, 18, .72);
  color: #fff8dc;
  box-shadow: inset 0 0 20px rgba(255, 248, 220, .06), 0 8px 24px rgba(0, 0, 0, .25);
  font-family: 'Noto Sans TC', sans-serif;
  text-align: center;
  text-shadow: 0 2px 5px rgba(0, 0, 0, .34);
  pointer-events: none;
  backdrop-filter: blur(4px);
}

.blackboard-bg.is-horizontal .blackboard-contact-time-widget {
  top: auto;
  left: auto;
  right: clamp(14px, 2vw, 28px);
  bottom: clamp(14px, 2vw, 28px);
}

.blackboard-contact-time-widget > span {
  color: rgba(255, 248, 220, .7);
  font-size: clamp(8px, .8vw, 13px);
  font-weight: 900;
  letter-spacing: .12em;
}

.blackboard-contact-time-widget > strong {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: clamp(24px, 3.4vw, 58px);
  font-weight: 950;
  font-variant-numeric: tabular-nums;
  line-height: 1.05;
  white-space: nowrap;
}

.blackboard-contact-time-widget > small { color: #ffdf75; font-size: clamp(8px, .75vw, 12px); font-weight: 950; }
.blackboard-contact-time-widget.is-time-up {
  border-color: #ffcf4f;
  background: rgba(140, 48, 41, .9);
  animation: blackboardWidgetTimeUp .8s ease-in-out infinite;
}

@keyframes blackboardWidgetTimeUp {
  0%, 100% { box-shadow: 0 0 0 0 rgba(255, 207, 79, .25), 0 8px 24px rgba(0, 0, 0, .25); }
  50% { box-shadow: 0 0 0 9px rgba(255, 207, 79, 0), 0 8px 32px rgba(255, 207, 79, .35); }
}

@media (max-width: 720px) {
  .blackboard-contact-duration-grid,
  .blackboard-contact-countdown-actions { grid-template-columns: 1fr; }
  .blackboard-contact-time-widget { min-width: 140px; }
}

@media (prefers-reduced-motion: reduce) {
  .blackboard-contact-time-widget.is-time-up { animation: none; }
}

/* Classroom countdown: one-tap projection and an in-page time-up finish state. */
body.countdown-projection-open { overflow: hidden; }

body.countdown-projection-open .workspace {
  animation: none !important;
  transform: none !important;
  -webkit-backdrop-filter: none !important;
  backdrop-filter: none !important;
}

.tool-countdown-board.tool-countdown-board {
  position: fixed;
  inset: 0;
  z-index: 14000;
  width: 100vw;
  height: 100vh;
  min-height: 100vh;
  padding: clamp(12px, 2vw, 28px);
  border-radius: 0;
  overflow: hidden;
  background:
    radial-gradient(circle at 18% 10%, rgba(255, 207, 79, .2), transparent 28%),
    radial-gradient(circle at 84% 18%, rgba(95, 212, 167, .18), transparent 30%),
    linear-gradient(145deg, #102d47, #0d2838 54%, #123e39);
}

@supports (height: 100dvh) {
  .tool-countdown-board.tool-countdown-board { height: 100dvh; min-height: 100dvh; }
}

.tool-countdown-board.is-time-up {
  background:
    radial-gradient(circle at 50% 45%, rgba(255, 207, 79, .22), transparent 32%),
    radial-gradient(circle at 15% 18%, rgba(255, 120, 90, .2), transparent 28%),
    radial-gradient(circle at 88% 80%, rgba(95, 212, 167, .2), transparent 30%),
    #102d47;
}

.tool-countdown-board.is-time-up .tool-countdown-stage {
  min-height: 0;
  overflow: hidden;
}

.tool-time-up-stage {
  position: relative;
  isolation: isolate;
  width: 100%;
  height: 100%;
  min-height: 0;
  overflow: hidden;
  display: grid;
  place-items: center;
  align-content: center;
  gap: clamp(20px, 4vh, 42px);
  padding: clamp(24px, 5vw, 72px);
  border: clamp(3px, .45vw, 7px) solid #ffcf4f;
  border-radius: clamp(24px, 3vw, 46px);
  background:
    linear-gradient(rgba(255, 255, 255, .035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .035) 1px, transparent 1px),
    rgba(6, 31, 47, .7);
  background-size: 38px 38px;
  box-shadow: inset 0 0 0 3px rgba(0, 0, 0, .22), 0 24px 80px rgba(0, 0, 0, .34);
  text-align: center;
}

.tool-time-up-halo {
  position: absolute;
  z-index: -1;
  width: min(64vw, 720px);
  aspect-ratio: 1;
  border: clamp(16px, 3vw, 40px) solid rgba(255, 207, 79, .22);
  border-radius: 50%;
  box-shadow: 0 0 0 28px rgba(255, 120, 90, .08), 0 0 110px rgba(255, 207, 79, .22);
  animation: countdownTimeUpHalo 1.5s cubic-bezier(.2, .8, .2, 1) infinite;
}

.tool-time-up-copy {
  position: relative;
  z-index: 2;
  display: grid;
  justify-items: center;
  gap: clamp(7px, 1.4vh, 16px);
  color: #fff8dc;
}

.tool-time-up-copy > span {
  padding: 7px 18px;
  border: 2px solid rgba(255, 248, 220, .58);
  border-radius: 999px;
  background: rgba(6, 31, 47, .52);
  color: #ffdf75;
  font-size: clamp(13px, 1.5vw, 22px);
  font-weight: 950;
  letter-spacing: .18em;
}

.tool-time-up-copy > strong {
  color: #fff8dc;
  font-size: clamp(78px, 17vw, 250px);
  font-weight: 950;
  line-height: .92;
  letter-spacing: .02em;
  text-shadow: 0 7px 0 #17325f, 0 12px 34px rgba(0, 0, 0, .4);
  animation: countdownTimeUpTitle .65s cubic-bezier(.18, .9, .28, 1.3) both;
}

.tool-time-up-copy > p {
  max-width: 42em;
  margin: 0;
  color: rgba(255, 248, 220, .82);
  font-size: clamp(14px, 1.5vw, 22px);
  font-weight: 800;
}

.tool-time-up-actions {
  position: relative;
  z-index: 3;
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px;
}

.tool-time-up-actions .cm-button {
  min-width: 150px;
  min-height: 48px;
  border: 2px solid #fff8dc;
  background: #fff8dc;
  color: #17325f;
  font-weight: 950;
  box-shadow: 0 5px 0 #091d2d;
}

.tool-time-up-actions .cm-primary { border-color: #ffcf4f; background: #ffcf4f; }

.tool-time-up-confetti {
  position: absolute;
  inset: 0;
  z-index: 1;
  overflow: hidden;
  pointer-events: none;
}

.tool-time-up-confetti i {
  position: absolute;
  top: -10%;
  width: clamp(7px, .8vw, 13px);
  height: clamp(16px, 2vw, 29px);
  border-radius: 3px;
  box-shadow: 0 3px 8px rgba(0, 0, 0, .18);
  animation: countdownConfettiFall 2.8s linear infinite;
}

@keyframes countdownTimeUpTitle {
  0% { opacity: 0; transform: scale(.72) rotate(-2deg); }
  70% { opacity: 1; transform: scale(1.06) rotate(1deg); }
  100% { opacity: 1; transform: scale(1) rotate(0); }
}

@keyframes countdownTimeUpHalo {
  0%, 100% { opacity: .48; transform: scale(.78); }
  50% { opacity: 1; transform: scale(1); }
}

@keyframes countdownConfettiFall {
  0% { opacity: 0; transform: translate3d(0, -8vh, 0) rotate(0); }
  12% { opacity: 1; }
  100% { opacity: .8; transform: translate3d(var(--confetti-drift), 112vh, 0) rotate(680deg); }
}

@media (max-width: 700px) {
  .tool-countdown-board.tool-countdown-board { padding: 8px; }
  .tool-time-up-stage { gap: 22px; padding: 20px 14px; border-radius: 22px; }
  .tool-time-up-copy > strong { font-size: clamp(64px, 23vw, 128px); }
  .tool-time-up-actions { width: 100%; }
  .tool-time-up-actions .cm-button { flex: 1 1 130px; min-width: 0; }
}

@media (prefers-reduced-motion: reduce) {
  .tool-time-up-halo,
  .tool-time-up-copy > strong,
  .tool-time-up-confetti i { animation: none; }
}

/* Blackboard editing workspace: quiet controls, generous live preview. */
.blackboard-workspace-toolbar { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; margin-bottom: 20px; }
.blackboard-workspace-toolbar .blackboard-tabs { flex: 1 1 320px; margin: 0; }
.blackboard-workspace-toolbar .blackboard-date-panel { flex: 0 1 390px; padding: 10px !important; }
.blackboard-workspace-toolbar .blackboard-date-panel .panel-header,
.blackboard-workspace-toolbar .date-display { display: none !important; }
.blackboard-workspace-toolbar .blackboard-date-panel .panel-body { display: flex; gap: 8px; align-items: center; }
.blackboard-workspace-toolbar .date-picker-wrap { flex: 1; min-width: 0; }
.blackboard-today-button { white-space: nowrap; }
.blackboard-project-button { min-height: 48px; }
.blackboard-page .blackboard-workspace-layout { grid-template-columns: minmax(300px, 360px) minmax(0, 1fr) !important; align-items: start; gap: 20px !important; }
.blackboard-page .blackboard-settings-grid { display: flex; flex-direction: column; gap: 12px; }
.blackboard-page .blackboard-settings-grid > * { width: 100%; box-sizing: border-box; }
.blackboard-page .blackboard-content-panel textarea { min-height: 235px; font-size: 16px; line-height: 1.8; }
.blackboard-page .blackboard-layout-panel .panel-body { grid-template-columns: minmax(0, 1fr); }
.blackboard-page .blackboard-zhuyin-toggle { margin-bottom: 14px !important; flex-wrap: wrap; }
.blackboard-segmented { display: flex; gap: 6px; flex-wrap: wrap; }
.blackboard-segmented .btn { min-height: 40px; flex: 1; white-space: nowrap; }
.blackboard-page .board-wrap { position: sticky; top: 20px; align-self: start; }
.blackboard-tools-disclosure { padding: 16px; }
.blackboard-tools-disclosure > summary, .blackboard-cloud-summary { cursor: pointer; font-weight: 700; line-height: 1.6; min-height: 28px; }
.blackboard-tools-disclosure > .panel { margin-top: 16px; padding: 12px; box-shadow: none; }
.blackboard-cloud-panel[open] > summary { margin-bottom: 16px; }
.blackboard-page summary:focus-visible, .blackboard-page button:focus-visible { outline: 3px solid var(--manager-accent, #257a63); outline-offset: 3px; }
.blackboard-page .blackboard-bg:not(:fullscreen):not(:-webkit-full-screen) .blackboard-contact-time-widget { transform: scale(.65); transform-origin: top left; }
.blackboard-page .blackboard-bg.is-horizontal:not(:fullscreen):not(:-webkit-full-screen) .blackboard-contact-time-widget { transform-origin: bottom right; }
@media (max-width: 1100px) {
  .blackboard-page .blackboard-workspace-layout { grid-template-columns: minmax(260px, 310px) minmax(0, 1fr) !important; gap: 14px !important; }
}
@media (max-width: 850px) {
  .blackboard-page .blackboard-workspace-layout { grid-template-columns: minmax(0, 1fr) !important; }
  .blackboard-page .board-wrap { position: static; }
  .blackboard-workspace-toolbar .blackboard-date-panel { flex: 1 1 280px; }
  .blackboard-page .blackboard-content-panel textarea { min-height: 180px; }
}
@media (max-width: 480px) {
  .blackboard-workspace-toolbar { gap: 10px; }
  .blackboard-project-button { width: 100%; }
  .blackboard-workspace-toolbar .blackboard-date-panel .panel-body { flex-wrap: wrap; }
}
/* Keep the complete date readable when the toolbar wraps. */
.blackboard-workspace-toolbar .blackboard-date-panel { min-width: min(100%, 350px); }
@media (max-width: 480px) {
  .blackboard-workspace-toolbar .date-picker-wrap { flex-basis: 100%; }
  .blackboard-workspace-toolbar .blackboard-today-button { width: 100%; }
}
.academic-retention-notice { margin: 14px; padding: 16px 20px; border: 1px solid #dfb955; border-radius: 14px; background: #fff8df; color: #433b25; display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.academic-retention-notice p { margin: 6px 0 0; line-height: 1.6; max-width: 800px; }
.local-save-notice[role="alert"] { border-color: #bd4747; background: #fff0ed; }
.storage-breakdown { display: grid; gap: 10px; margin: 16px 0; }