/* ============================================================================
   TIMETABLE PAGE STYLES
   课程表页面专用样式
   ============================================================================ */

/* ============================================================================
   § 1. PAGE HEADER & CONTROLS
   ============================================================================ */

.timetable-page {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 40px 24px 80px;
}

.timetable-header {
  margin-bottom: 32px;
}

.timetable-header__top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 24px;
  flex-wrap: wrap;
  gap: 16px;
}

.timetable-title {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.04em;
  color: var(--color-text-primary);
  margin: 0 0 8px;
}

.timetable-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--color-text-secondary);
  font-size: 14px;
}

.timetable-meta__divider {
  color: var(--color-text-muted);
}

.timetable-controls {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.timetable-week-nav {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 4px;
}

.timetable-week-nav__btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 6px;
  background: none;
  border: none;
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.timetable-week-nav__btn:hover:not(:disabled) {
  background-color: var(--color-border);
  color: var(--color-text-primary);
}

.timetable-week-nav__btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.timetable-week-nav__btn svg {
  width: 20px;
  height: 20px;
}

.timetable-week-nav__current {
  min-width: 80px;
  text-align: center;
  font-weight: 500;
  color: var(--color-text-primary);
  font-size: 14px;
}

.timetable-badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  background-color: var(--color-accent);
  color: var(--color-bg);
  border-radius: 20px;
  font-size: 12px;
  font-weight: 500;
}

.timetable-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  color: var(--color-text-primary);
  font-size: 14px;
  text-decoration: none;
  transition: all var(--transition-fast);
  cursor: pointer;
}

.timetable-btn:hover {
  border-color: var(--color-border-hover);
  background-color: var(--color-border-light);
}

.timetable-btn svg {
  width: 16px;
  height: 16px;
}

/* ============================================================================
   § 2. DESKTOP TABLE VIEW
   ============================================================================ */

.timetable-desktop {
  display: block;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  overflow: hidden;
}

.timetable-table-wrapper {
  overflow-x: auto;
}

.timetable-table {
  width: 100%;
  border-collapse: collapse;
  table-layout: fixed;
}

.timetable-table th,
.timetable-table td {
  padding: 16px;
  text-align: left;
  vertical-align: top;
}

.timetable-table thead th {
  background-color: var(--color-border-light);
  border-bottom: 1px solid var(--color-border);
  font-weight: 600;
  font-size: 14px;
  color: var(--color-text-primary);
}

.timetable-table tbody tr {
  border-bottom: 1px solid var(--color-border);
}

.timetable-table tbody tr:last-child {
  border-bottom: none;
}

.timetable-table .col-time {
  width: 120px;
}

.timetable-node-info {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.timetable-node-info__label {
  font-weight: 500;
  font-size: 14px;
  color: var(--color-text-primary);
}

.timetable-node-info__time {
  font-size: 12px;
  color: var(--color-text-muted);
}

.timetable-day-header {
  font-weight: 600;
  font-size: 14px;
  color: var(--color-text-primary);
}

/* ============================================================================
   § 3. COURSE CARDS
   ============================================================================ */

.timetable-courses {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.timetable-course {
  padding: 12px;
  border-radius: 8px;
  border-left: 4px solid;
  background-color: var(--color-bg);
  transition: transform var(--transition-fast);
}

.timetable-course:hover {
  transform: translateX(2px);
}

.timetable-course__name {
  font-weight: 600;
  font-size: 14px;
  color: var(--color-text-primary);
  margin-bottom: 6px;
  line-height: 1.3;
}

.timetable-course__meta {
  display: flex;
  flex-direction: column;
  gap: 2px;
  font-size: 12px;
  color: var(--color-text-secondary);
  line-height: 1.4;
}

.timetable-course__meta-item {
  display: flex;
  align-items: center;
  gap: 4px;
}

.timetable-empty-cell {
  text-align: center;
  color: var(--color-text-muted);
  font-size: 14px;
  padding: 24px 0;
}

/* ============================================================================
   § 4. MOBILE LIST VIEW
   ============================================================================ */

.timetable-mobile {
  display: none;
  flex-direction: column;
  gap: 16px;
}

.timetable-day-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  overflow: hidden;
}

.timetable-day-card__header {
  padding: 16px 20px;
  background-color: var(--color-border-light);
  border-bottom: 1px solid var(--color-border);
}

.timetable-day-card__title {
  font-weight: 600;
  font-size: 16px;
  color: var(--color-text-primary);
  margin: 0;
}

.timetable-day-card__content {
  padding: 16px 20px;
}

.timetable-day-card__courses {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.timetable-day-card__empty {
  text-align: center;
  color: var(--color-text-muted);
  font-size: 14px;
  padding: 24px 0;
}

.timetable-course--mobile {
  padding: 16px;
  border-radius: 8px;
  border-left: 4px solid;
  background-color: var(--color-bg);
}

.timetable-course--mobile .timetable-course__name {
  font-size: 15px;
  margin-bottom: 8px;
}

.timetable-course--mobile .timetable-course__meta {
  font-size: 13px;
  gap: 4px;
}

/* ============================================================================
   § 5. TIMETABLE CARD COMPONENT (Sidebar)
   ============================================================================ */

.timetable-card {
  display: block;
  text-decoration: none;
  color: inherit;
}

.timetable-card__inner {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 16px;
  transition: all var(--transition-fast);
}

.timetable-card:hover .timetable-card__inner {
  border-color: var(--color-border-hover);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.timetable-card__status {
  font-size: 14px;
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: 8px;
}

.timetable-card__lines {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.timetable-card__line {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 4px;
  font-size: 12px;
  line-height: 1.5;
}

.timetable-card__label {
  color: var(--color-text-secondary);
}

.timetable-card__value {
  color: var(--color-text-primary);
}

.timetable-card__value--bold {
  font-weight: 600;
}

.timetable-card__value--strikethrough {
  text-decoration: line-through;
  opacity: 0.6;
}

.timetable-card__countdown {
  font-weight: 600;
  color: var(--color-accent-hover);
}

.timetable-card__loading {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.timetable-card__skeleton {
  height: 12px;
  background-color: var(--color-border);
  border-radius: 4px;
  animation: timetable-pulse 1.5s ease-in-out infinite;
}

.timetable-card__skeleton--short {
  width: 60%;
}

.timetable-card__skeleton--medium {
  width: 80%;
}

@keyframes timetable-pulse {
  0%, 100% {
    opacity: 0.4;
  }
  50% {
    opacity: 0.8;
  }
}

/* ============================================================================
   § 6. RESPONSIVE DESIGN
   ============================================================================ */

@media (max-width: 767px) {
  .timetable-page {
    padding: 24px 16px 60px;
  }

  .timetable-title {
    font-size: 1.5rem;
  }

  .timetable-header__top {
    flex-direction: column;
    gap: 16px;
  }

  .timetable-desktop {
    display: none;
  }

  .timetable-mobile {
    display: flex;
  }
}

@media (min-width: 768px) {
  .timetable-desktop {
    display: block;
  }

  .timetable-mobile {
    display: none;
  }
}

/* ============================================================================
   § 7. DARK/LIGHT MODE ADAPTATIONS
   ============================================================================ */

[data-theme="light"] .timetable-course {
  background-color: rgba(255, 255, 255, 0.5);
}

[data-theme="light"] .timetable-course--mobile {
  background-color: rgba(255, 255, 255, 0.5);
}

[data-theme="light"] .timetable-card:hover .timetable-card__inner {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

/* ============================================================================
   § 8. UTILITY CLASSES
   ============================================================================ */

.timetable-hidden {
  display: none !important;
}

.timetable-text-center {
  text-align: center;
}

.timetable-mt-4 {
  margin-top: 16px;
}

.timetable-mb-4 {
  margin-bottom: 16px;
}