@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 {
  justify-content: flex-start;
  border-radius: 15px;
  padding: 10px 12px;
  font-weight: 700;
}

.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;
}

@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;
  }
}