/* ==========================================================================
   Kazi Nazrul Academy — Public Class Routine Stylesheet
   File: pages/css/class-routine.css
   Scope: Public Routine Viewer (pages/class-routine.html)
   Design System: KNA Design System (Plus Jakarta Sans, Slate & Sky Palette)
   ========================================================================== */

/* Root tokens specific to Routine Viewer */
:root {
  --rt-navy-950: #0a0f1d;
  --rt-navy-900: #0f172a;
  --rt-navy-800: #1e293b;
  --rt-navy-700: #334155;
  --rt-slate-600: #475569;
  --rt-slate-500: #64748b;
  --rt-slate-400: #94a3b8;
  --rt-slate-300: #cbd5e1;
  --rt-slate-200: #e2e8f0;
  --rt-slate-100: #f1f5f9;
  --rt-slate-50:  #f8fafc;

  --rt-sky-800: #075985;
  --rt-sky-700: #0369a1;
  --rt-sky-600: #0284c7;
  --rt-sky-500: #0ea5e9;
  --rt-sky-100: #e0f2fe;
  --rt-sky-50:  #f0f9ff;

  --rt-amber-700: #b45309;
  --rt-amber-600: #d97706;
  --rt-amber-500: #f59e0b;
  --rt-amber-100: #fef3c7;
  --rt-amber-50:  #fffbeb;

  --rt-emerald-700: #047857;
  --rt-emerald-600: #059669;
  --rt-emerald-500: #10b981;
  --rt-emerald-100: #d1fae5;
  --rt-emerald-50:  #ecfdf5;

  --rt-radius-sm: 8px;
  --rt-radius-md: 12px;
  --rt-radius-lg: 16px;
  --rt-radius-xl: 20px;
  --rt-radius-full: 9999px;

  --rt-shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.05);
  --rt-shadow-md: 0 4px 14px rgba(15, 23, 42, 0.07);
  --rt-shadow-lg: 0 10px 28px rgba(15, 23, 42, 0.1);
  --rt-trans-fast: 0.18s ease;
  --rt-trans-normal: 0.25s ease;
}

/* Page Header Banner */
.routine-header-banner {
  text-align: center;
  margin: 28px 0 20px;
}

.routine-main-h1 {
  margin: 0;
  font-size: 2.1rem;
  font-weight: 800;
  color: var(--rt-navy-950);
  letter-spacing: -0.025em;
}

.routine-main-subtitle {
  margin: 6px 0 0;
  font-size: 0.95rem;
  color: var(--rt-slate-500);
  font-weight: 600;
}

/* Page Outer Wrapper */
.routine-page-wrap {
  display: flex;
  flex-direction: column;
  gap: 22px;
  width: 100%;
}

/* Routine Dynamic Content Wrap */
#routineMainContent {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

/* --------------------------------------------------------------------------
   1. Hero / Lead Header Banner
   -------------------------------------------------------------------------- */
.routine-lead-box {
  background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 60%, #eef2ff 100%);
  border: 1px solid #bae6fd;
  border-left: 6px solid var(--rt-sky-600);
  border-radius: var(--rt-radius-lg);
  padding: 24px 28px;
  box-shadow: 0 4px 18px rgba(14, 165, 233, 0.09);
}

.routine-lead-header {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 14px;
  margin-bottom: 10px;
}

.routine-lead-title {
  margin: 0;
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--rt-sky-700);
  display: flex;
  align-items: center;
  gap: 10px;
  letter-spacing: -0.015em;
}

.routine-lead-badges {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.routine-hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 13px;
  background: var(--rt-sky-600);
  color: #ffffff;
  border-radius: var(--rt-radius-full);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.3px;
  box-shadow: 0 2px 8px rgba(2, 132, 199, 0.28);
}

.routine-lead-box p {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.65;
  color: var(--rt-navy-700);
}

/* --------------------------------------------------------------------------
   2. Interactive Control Panel / Filters Card
   -------------------------------------------------------------------------- */
.routine-control-panel {
  background: #ffffff;
  border: 1px solid var(--rt-slate-200);
  border-radius: var(--rt-radius-lg);
  padding: 20px 22px;
  box-shadow: var(--rt-shadow-sm);
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.routine-filters-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 16px;
  align-items: flex-end;
}

.filter-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.filter-label {
  font-size: 0.78rem;
  font-weight: 800;
  color: var(--rt-slate-600);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  display: flex;
  align-items: center;
  gap: 6px;
}

.filter-label i {
  color: var(--rt-sky-600);
  font-size: 0.85rem;
}

.routine-select {
  width: 100%;
  min-height: 46px;
  box-sizing: border-box;
  padding: 10px 14px;
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--rt-navy-900);
  background: var(--rt-slate-50);
  border: 1.5px solid var(--rt-slate-200);
  border-radius: var(--rt-radius-md);
  outline: none;
  cursor: pointer;
  transition: all var(--rt-trans-fast);
  font-family: inherit;
}

.routine-select:hover {
  border-color: var(--rt-sky-500);
  background: #ffffff;
}

.routine-select:focus-visible {
  border-color: var(--rt-sky-600);
  background: #ffffff;
  box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.22);
}

/* Category Segmented Control */
.category-segmented-control {
  display: flex;
  background: var(--rt-slate-100);
  padding: 4px;
  border-radius: var(--rt-radius-md);
  border: 1px solid var(--rt-slate-200);
  gap: 4px;
}

.category-seg-btn {
  flex: 1;
  min-height: 42px;
  box-sizing: border-box;
  padding: 9px 14px;
  border: none;
  background: transparent;
  color: var(--rt-slate-600);
  font-size: 0.85rem;
  font-weight: 700;
  border-radius: var(--rt-radius-sm);
  cursor: pointer;
  transition: all var(--rt-trans-fast);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  font-family: inherit;
  white-space: nowrap;
}

.category-seg-btn:hover {
  color: var(--rt-navy-950);
  background: rgba(255, 255, 255, 0.5);
}

.category-seg-btn.active {
  background: #ffffff;
  color: var(--rt-sky-700);
  font-weight: 800;
  box-shadow: 0 2px 6px rgba(15, 23, 42, 0.08);
}

.category-seg-btn:focus-visible {
  outline: 2px solid var(--rt-sky-600);
  outline-offset: 1px;
}

/* Quick Class Selector Strip */
.quick-classes-strip {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding-top: 14px;
  border-top: 1px solid var(--rt-slate-100);
}

.quick-classes-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.quick-classes-label {
  font-size: 0.74rem;
  font-weight: 800;
  color: var(--rt-slate-500);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.quick-classes-pills {
  display: flex;
  gap: 6px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior-x: contain;
  padding-bottom: 4px;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.quick-classes-pills::-webkit-scrollbar {
  display: none;
  height: 0;
}

.class-pill-btn {
  padding: 6px 13px;
  background: var(--rt-slate-50);
  border: 1px solid var(--rt-slate-200);
  border-radius: var(--rt-radius-full);
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--rt-navy-800);
  cursor: pointer;
  white-space: nowrap;
  transition: all var(--rt-trans-fast);
  font-family: inherit;
}

.class-pill-btn:hover {
  background: var(--rt-slate-200);
  color: var(--rt-navy-950);
  border-color: var(--rt-slate-300);
}

.class-pill-btn.active {
  background: var(--rt-navy-900);
  border-color: var(--rt-navy-900);
  color: #ffffff;
  box-shadow: 0 2px 6px rgba(15, 23, 42, 0.2);
}

.class-pill-btn:focus-visible {
  outline: 2px solid var(--rt-sky-600);
  outline-offset: 2px;
}

/* Secondary Actions Bar (View Mode) */
.routine-actions-bar {
  display: flex;
  justify-content: flex-start;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  padding-top: 14px;
  border-top: 1px solid var(--rt-slate-100);
}

.view-mode-toggle {
  display: flex;
  background: var(--rt-slate-100);
  padding: 3px;
  border-radius: var(--rt-radius-md);
  border: 1px solid var(--rt-slate-200);
  gap: 3px;
}

.view-mode-btn {
  padding: 7px 14px;
  border: none;
  background: transparent;
  color: var(--rt-slate-600);
  font-size: 0.8rem;
  font-weight: 700;
  border-radius: var(--rt-radius-sm);
  cursor: pointer;
  transition: all var(--rt-trans-fast);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: inherit;
}

.view-mode-btn:hover {
  color: var(--rt-navy-900);
}

.view-mode-btn.active {
  background: #ffffff;
  color: var(--rt-navy-950);
  font-weight: 800;
  box-shadow: 0 2px 4px rgba(15, 23, 42, 0.08);
}

.view-mode-btn:focus-visible {
  outline: 2px solid var(--rt-sky-600);
  outline-offset: 1px;
}

/* --------------------------------------------------------------------------
   3. Current Routine Status Strip
   -------------------------------------------------------------------------- */
.routine-status-strip {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  padding: 20px 26px;
  background: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
  border: 1.5px solid var(--rt-slate-200);
  border-left: 6px solid var(--rt-sky-600);
  border-radius: var(--rt-radius-lg);
  box-shadow: 0 4px 16px rgba(15, 23, 42, 0.05);
  margin-bottom: 24px;
}

.routine-title-box {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.routine-main-title {
  margin: 0;
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--rt-navy-950);
  letter-spacing: -0.01em;
}

.routine-meta-subtitle {
  font-size: 0.8rem;
  color: var(--rt-slate-500);
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.routine-badges-wrap {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.rt-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 4px 10px;
  border-radius: var(--rt-radius-full);
  font-size: 0.74rem;
  font-weight: 700;
}

.rt-badge-session {
  background: var(--rt-sky-50);
  color: var(--rt-sky-700);
  border: 1px solid var(--rt-sky-100);
}

.rt-badge-category {
  background: var(--rt-slate-100);
  color: var(--rt-navy-800);
  border: 1px solid var(--rt-slate-200);
}

.rt-badge-published {
  background: var(--rt-emerald-50);
  color: var(--rt-emerald-700);
  border: 1px solid var(--rt-emerald-100);
}

.rt-badge-cohort {
  background: var(--rt-amber-50);
  color: var(--rt-amber-700);
  border: 1px solid var(--rt-amber-100);
}

/* --------------------------------------------------------------------------
   4. Day View Styles
   -------------------------------------------------------------------------- */
.day-view-container {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* Day Pills Bar */
.routine-day-pills-bar {
  display: flex;
  gap: 10px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior-x: contain;
  padding: 8px;
  background: #f8fafc;
  border: 1.5px solid var(--rt-slate-200);
  border-radius: var(--rt-radius-lg);
  margin-bottom: 20px;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.routine-day-pills-bar::-webkit-scrollbar {
  display: none;
  height: 0;
}

.routine-day-pill {
  flex: 1;
  min-width: 105px;
  padding: 12px 14px;
  border: 1.5px solid var(--rt-slate-200);
  background: #ffffff;
  border-radius: var(--rt-radius-md);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--rt-slate-600);
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  transition: all var(--rt-trans-fast);
  font-family: inherit;
  position: relative;
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.04);
}

.routine-day-pill:hover {
  background: #ffffff;
  border-color: var(--rt-sky-500);
  color: var(--rt-sky-700);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(14, 165, 233, 0.12);
}

.routine-day-pill.active {
  background: var(--rt-navy-900);
  border-color: var(--rt-navy-900);
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(15, 23, 42, 0.18);
  transform: translateY(-1px);
}

.routine-day-pill:focus-visible {
  outline: 2px solid var(--rt-sky-600);
  outline-offset: 2px;
}

.routine-day-pill .day-pill-name {
  font-size: 0.92rem;
  font-weight: 800;
  letter-spacing: -0.01em;
}

.routine-day-pill .day-pill-meta {
  font-size: 0.72rem;
  color: var(--rt-slate-500);
  font-weight: 600;
}

.routine-day-pill.active .day-pill-meta {
  color: var(--rt-slate-300);
}

.routine-day-pill .day-today-indicator {
  position: absolute;
  top: 6px;
  right: 6px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--rt-emerald-500);
}

.routine-day-pill.active .day-today-indicator {
  background: var(--rt-emerald-400);
  box-shadow: 0 0 6px var(--rt-emerald-400);
}

/* Day Schedule Header info */
.day-schedule-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 20px;
  margin-bottom: 16px;
  background: linear-gradient(90deg, #f1f5f9 0%, #f8fafc 100%);
  border: 1px solid var(--rt-slate-200);
  border-radius: var(--rt-radius-md);
}

.day-schedule-title {
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--rt-navy-950);
  display: flex;
  align-items: center;
  gap: 8px;
}

.day-schedule-count {
  font-size: 0.8rem;
  color: var(--rt-slate-600);
  font-weight: 700;
  background: #ffffff;
  padding: 4px 10px;
  border-radius: var(--rt-radius-full);
  border: 1px solid var(--rt-slate-200);
}

/* Periods List */
.routine-periods-container {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

/* Teaching Period Card */
.routine-period-card {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: #ffffff;
  border: 1.5px solid var(--rt-slate-200);
  border-radius: var(--rt-radius-md);
  padding: 16px 20px;
  transition: all var(--rt-trans-fast);
  box-shadow: 0 2px 6px rgba(15, 23, 42, 0.04);
}

.routine-period-card:hover {
  border-color: var(--rt-sky-500);
  box-shadow: 0 6px 18px rgba(14, 165, 233, 0.1);
  transform: translateY(-1px);
}

.routine-period-card.active-slot {
  background: var(--rt-emerald-50);
  border-color: var(--rt-emerald-500);
}

.routine-period-left {
  display: flex;
  align-items: center;
  gap: 14px;
}

.period-num-badge {
  width: 36px;
  height: 36px;
  border-radius: var(--rt-radius-md);
  background: var(--rt-slate-100);
  color: var(--rt-navy-900);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 0.85rem;
  flex-shrink: 0;
  border: 1px solid var(--rt-slate-200);
}

.routine-period-card.active-slot .period-num-badge {
  background: var(--rt-emerald-600);
  color: #ffffff;
  border-color: var(--rt-emerald-600);
}

.period-details {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.period-subject-title {
  font-size: 0.95rem;
  font-weight: 800;
  color: var(--rt-navy-950);
  display: flex;
  align-items: center;
  gap: 8px;
}

.period-room-tag {
  font-size: 0.72rem;
  color: var(--rt-slate-500);
  background: var(--rt-slate-100);
  padding: 2px 7px;
  border-radius: var(--rt-radius-sm);
  font-weight: 600;
}

.period-now-pill {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 8px;
  background: var(--rt-emerald-600);
  color: #ffffff;
  border-radius: var(--rt-radius-full);
  font-size: 0.68rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.period-now-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: #ffffff;
  animation: pulse-dot 1.4s infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.8); }
}

.routine-period-right {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 4px;
  text-align: right;
}

.period-time-text {
  font-size: 0.8rem;
  color: var(--rt-slate-500);
  font-weight: 700;
}

.period-teacher-text {
  font-size: 0.84rem;
  font-weight: 700;
  color: var(--rt-sky-700);
  display: flex;
  align-items: center;
  gap: 6px;
}

.period-teacher-text i {
  font-size: 0.78rem;
}

/* Break Card */
.routine-break-card {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--rt-amber-50);
  border: 1px dashed var(--rt-amber-500);
  border-radius: var(--rt-radius-md);
  padding: 12px 18px;
}

.routine-break-left {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--rt-amber-700);
  font-weight: 800;
  font-size: 0.92rem;
}

.routine-break-left i {
  font-size: 1.1rem;
  color: var(--rt-amber-600);
}

.routine-break-time {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--rt-amber-700);
}

/* No Classes Notice (e.g. Friday in Hostel) */
.routine-no-classes-notice {
  padding: 32px 20px;
  background: var(--rt-slate-50);
  border: 1px dashed var(--rt-slate-300);
  border-radius: var(--rt-radius-lg);
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.no-classes-icon {
  font-size: 2rem;
  color: var(--rt-sky-600);
}

.no-classes-title {
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--rt-navy-950);
}

.no-classes-desc {
  font-size: 0.85rem;
  color: var(--rt-slate-500);
  max-width: 480px;
  margin: 0;
  line-height: 1.6;
}

/* --------------------------------------------------------------------------
   5. Full Week Matrix View Styles
   -------------------------------------------------------------------------- */
.week-view-container {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.routine-table-wrap {
  width: 100%;
  overflow-x: auto;
  background: #ffffff;
  border: 1px solid var(--rt-slate-200);
  border-radius: var(--rt-radius-lg);
  box-shadow: var(--rt-shadow-sm);
  -webkit-overflow-scrolling: touch;
}

.routine-grid-table {
  width: 100%;
  min-width: 780px;
  border-collapse: collapse;
  font-size: 0.82rem;
  text-align: left;
}

.routine-grid-table thead th {
  background: var(--rt-navy-900);
  color: #ffffff;
  padding: 12px 14px;
  font-weight: 800;
  letter-spacing: 0.02em;
  border: 1px solid var(--rt-navy-800);
  white-space: nowrap;
}

.routine-grid-table th.col-day {
  width: 120px;
  position: sticky;
  left: 0;
  background: var(--rt-navy-950);
  z-index: 2;
}

.routine-grid-table tbody td {
  padding: 12px 14px;
  border: 1px solid var(--rt-slate-200);
  vertical-align: top;
  background: #ffffff;
  transition: background var(--rt-trans-fast);
}

.routine-grid-table tbody tr:hover td {
  background: rgba(241, 245, 249, 0.4);
}

.routine-grid-table td.cell-day-label {
  font-weight: 800;
  background: var(--rt-slate-100);
  color: var(--rt-navy-950);
  position: sticky;
  left: 0;
  z-index: 1;
  white-space: nowrap;
}

.cell-subject-title {
  font-weight: 800;
  color: var(--rt-navy-900);
  font-size: 0.86rem;
  margin-bottom: 3px;
}

.cell-teacher-name {
  font-size: 0.76rem;
  color: var(--rt-sky-700);
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 4px;
  margin-top: 3px;
}

.cell-time-span {
  font-size: 0.72rem;
  color: var(--rt-slate-400);
  margin-top: 3px;
  font-weight: 600;
}

.routine-grid-table td.break-cell {
  background: var(--rt-amber-50) !important;
  color: var(--rt-amber-800);
  text-align: center;
  vertical-align: middle;
  border-left: 2px solid var(--rt-amber-500);
  border-right: 2px solid var(--rt-amber-500);
}

.break-cell-content {
  font-weight: 800;
  font-size: 0.8rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
}

.break-cell-content i {
  color: var(--rt-amber-600);
}

.break-cell-time {
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--rt-amber-700);
}

.routine-grid-table td.no-class-cell {
  background: var(--rt-slate-50) !important;
  color: var(--rt-slate-500);
  text-align: center;
  font-weight: 700;
  font-style: italic;
  padding: 16px;
}

/* --------------------------------------------------------------------------
   6. Clean Empty State
   -------------------------------------------------------------------------- */
.routine-empty-card {
  padding: 48px 24px;
  background: #ffffff;
  border: 1.5px dashed var(--rt-slate-300);
  border-radius: var(--rt-radius-lg);
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  margin: 10px 0;
}

.empty-icon-wrap {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--rt-slate-100);
  color: var(--rt-slate-400);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  margin-bottom: 4px;
}

.empty-state-title {
  margin: 0;
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--rt-navy-950);
}

.empty-state-desc {
  margin: 0;
  font-size: 0.9rem;
  color: var(--rt-slate-500);
  max-width: 520px;
  line-height: 1.6;
}

.empty-actions-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: center;
  margin-top: 8px;
}

.btn-empty-action {
  padding: 8px 18px;
  border-radius: var(--rt-radius-md);
  font-size: 0.85rem;
  font-weight: 700;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  transition: all var(--rt-trans-fast);
  font-family: inherit;
}

.btn-empty-primary {
  background: var(--rt-sky-600);
  color: #ffffff;
  border: none;
}

.btn-empty-primary:hover {
  background: var(--rt-sky-700);
}

.btn-empty-secondary {
  background: #ffffff;
  color: var(--rt-navy-900);
  border: 1px solid var(--rt-slate-300);
}

.btn-empty-secondary:hover {
  background: var(--rt-slate-100);
}

/* --------------------------------------------------------------------------
   7. Loading Skeletons & Error Banner
   -------------------------------------------------------------------------- */
.routine-skeleton {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 10px 0;
}

.skeleton-shimmer {
  background: linear-gradient(90deg, #f1f5f9 25%, #e2e8f0 50%, #f1f5f9 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--rt-radius-md);
}

@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

.skeleton-banner { height: 90px; }
.skeleton-controls { height: 110px; }
.skeleton-cards { height: 60px; }

.routine-error-banner {
  background: #fff1f2;
  border: 1px solid #ffe4e6;
  border-radius: var(--rt-radius-md);
  padding: 18px 22px;
  color: #be123c;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 14px;
}

.routine-error-info {
  display: flex;
  align-items: center;
  gap: 12px;
}

.routine-error-info i {
  font-size: 1.4rem;
}

.routine-error-title {
  font-weight: 800;
  font-size: 0.95rem;
}

.routine-error-desc {
  font-size: 0.82rem;
  color: #9f1239;
  margin-top: 2px;
}

.btn-retry {
  padding: 8px 16px;
  background: #e11d48;
  color: #ffffff;
  border: none;
  border-radius: var(--rt-radius-sm);
  font-weight: 700;
  font-size: 0.82rem;
  cursor: pointer;
  font-family: inherit;
}

.btn-retry:hover {
  background: #be123c;
}

/* --------------------------------------------------------------------------
   8. Mobile Responsiveness (320px – 768px)
   -------------------------------------------------------------------------- */
/* --------------------------------------------------------------------------
   8. Exam Routine Integration (Cards, Grid Table & Type Switcher Base Styles)
   -------------------------------------------------------------------------- */
.routine-type-switcher-wrap {
  display: flex;
  justify-content: flex-start;
  align-items: center;
  margin-bottom: 22px;
}

.routine-type-toggle {
  display: inline-flex;
  background: #f1f5f9;
  border: 1.5px solid #cbd5e1;
  border-radius: 9999px;
  padding: 5px;
  gap: 6px;
  box-shadow: 0 2px 6px rgba(15, 23, 42, 0.05);
}

.routine-type-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 9px 20px;
  min-height: 44px;
  box-sizing: border-box;
  border-radius: 9999px;
  border: none;
  background: transparent;
  color: #475569;
  font-family: inherit;
  font-size: 0.92rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  white-space: nowrap;
  user-select: none;
  outline: none;
}

.routine-type-btn i {
  font-size: 0.95rem;
  color: inherit;
}

.routine-type-btn:hover:not(.active) {
  color: #0369a1;
  background: rgba(255, 255, 255, 0.85);
}

.routine-type-btn.active {
  background: linear-gradient(135deg, #0284c7 0%, #0369a1 100%);
  color: #ffffff;
  box-shadow: 0 4px 12px rgba(2, 132, 199, 0.35);
}

.routine-type-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 22px;
  height: 22px;
  padding: 0 7px;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 800;
  background: rgba(15, 23, 42, 0.09);
  color: #334155;
  transition: all 0.2s ease;
}

.routine-type-btn.active .routine-type-badge {
  background: rgba(255, 255, 255, 0.25);
  color: #ffffff;
}

.routine-type-btn:focus-visible {
  outline: 2px solid #0284c7;
  outline-offset: 2px;
}

/* Exam View Section */
.exam-view-container {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.exam-schedule-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  padding: 16px 22px;
  background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
  border: 1.5px solid var(--rt-slate-200);
  border-radius: var(--rt-radius-lg);
  box-shadow: 0 2px 8px rgba(15, 23, 42, 0.03);
}

.exam-schedule-title-wrap {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.exam-schedule-title {
  font-size: 1.12rem;
  font-weight: 800;
  color: var(--rt-navy-950);
  display: flex;
  align-items: center;
  gap: 9px;
  margin: 0;
}

.exam-schedule-title i {
  color: var(--rt-sky-600);
}

.exam-schedule-count {
  font-size: 0.8rem;
  color: var(--rt-slate-700);
  font-weight: 700;
  background: #ffffff;
  padding: 4px 12px;
  border-radius: var(--rt-radius-full);
  border: 1px solid var(--rt-slate-200);
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.05);
}

.exam-date-range-badge {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 5px 14px;
  background: #ffffff;
  color: var(--rt-sky-700);
  font-size: 0.82rem;
  font-weight: 700;
  border-radius: var(--rt-radius-full);
  border: 1px solid #bae6fd;
  box-shadow: 0 1px 4px rgba(2, 132, 199, 0.08);
}

.exam-cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(310px, 1fr));
  gap: 18px;
}

.exam-paper-card {
  background: #ffffff;
  border: 1.5px solid var(--rt-slate-200);
  border-radius: var(--rt-radius-lg);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  transition: all 0.22s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 2px 8px rgba(15, 23, 42, 0.04);
  position: relative;
}

.exam-paper-card:hover {
  border-color: var(--rt-sky-500);
  box-shadow: 0 8px 24px rgba(14, 165, 233, 0.14);
  transform: translateY(-3px);
}

.exam-paper-card.today-exam {
  background: #ecfdf5;
  border-color: #10b981;
  box-shadow: 0 4px 16px rgba(16, 185, 129, 0.15);
}

.exam-card-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
}

.exam-paper-pill {
  display: inline-flex;
  align-items: center;
  padding: 4px 11px;
  background: var(--rt-slate-100);
  color: var(--rt-navy-900);
  font-size: 0.76rem;
  font-weight: 800;
  border-radius: 6px;
  border: 1px solid var(--rt-slate-200);
  letter-spacing: 0.02em;
}

.exam-paper-card.today-exam .exam-paper-pill {
  background: #059669;
  color: #ffffff;
  border-color: #059669;
}

.exam-status-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 11px;
  border-radius: var(--rt-radius-full);
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.exam-status-badge.upcoming {
  background: #f0f9ff;
  color: #0369a1;
  border: 1px solid #bae6fd;
}

.exam-status-badge.today {
  background: #d1fae5;
  color: #065f46;
  border: 1px solid #6ee7b7;
}

.exam-status-badge.completed {
  background: #f1f5f9;
  color: #64748b;
  border: 1px solid #cbd5e1;
}

.exam-subject-title {
  font-size: 1.22rem;
  font-weight: 800;
  color: var(--rt-navy-950);
  letter-spacing: -0.01em;
  line-height: 1.3;
  margin: 0;
}

.exam-card-details {
  display: flex;
  flex-direction: column;
  gap: 9px;
  padding-top: 12px;
  border-top: 1px dashed var(--rt-slate-200);
  font-size: 0.88rem;
  color: var(--rt-navy-800);
}

.exam-detail-row {
  display: flex;
  align-items: center;
  gap: 9px;
}

.exam-detail-row i {
  color: var(--rt-sky-600);
  width: 16px;
  text-align: center;
  font-size: 0.9rem;
}

.exam-duration-pill {
  display: inline-flex;
  align-items: center;
  margin-left: 6px;
  padding: 2px 8px;
  background: #e0f2fe;
  color: #0369a1;
  font-size: 0.72rem;
  font-weight: 700;
  border-radius: var(--rt-radius-full);
}

/* Exam Table View */
.exam-table-wrap {
  overflow-x: auto;
  border: 1.5px solid var(--rt-slate-200);
  border-radius: var(--rt-radius-lg);
  box-shadow: 0 2px 10px rgba(15, 23, 42, 0.04);
  background: #ffffff;
}

.exam-grid-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  text-align: left;
}

.exam-grid-table th {
  background: #f8fafc;
  color: var(--rt-navy-950);
  font-weight: 800;
  padding: 13px 18px;
  border-bottom: 2px solid var(--rt-slate-300);
  white-space: nowrap;
}

.exam-grid-table td {
  padding: 14px 18px;
  border-bottom: 1px solid var(--rt-slate-200);
  color: var(--rt-navy-900);
  vertical-align: middle;
}

.exam-grid-table tbody tr:hover {
  background: #f8fafc;
}

/* --------------------------------------------------------------------------
   9. Mobile & Tablet Responsiveness (Strict Visual Calibration)
   -------------------------------------------------------------------------- */
@media screen and (max-width: 1024px) {
  body[data-page="routine"] .main {
    padding-top: 140px;
  }
}

@media screen and (max-width: 768px) {
  body[data-page="routine"] .main {
    padding-top: 138px;
  }

  .routine-header-banner {
    margin: 14px 0 16px;
  }

  .routine-lead-box {
    padding: 18px 20px;
  }

  .routine-lead-title {
    font-size: 1.15rem;
  }

  .routine-control-panel {
    padding: 16px;
  }

  .routine-filters-grid {
    grid-template-columns: 1fr;
  }

  .routine-status-strip {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .routine-day-pills-bar {
    gap: 6px;
  }

  .routine-day-pill {
    min-width: 75px;
    padding: 8px 10px;
  }

  .routine-period-card {
    padding: 14px 16px;
  }

  .period-num-badge {
    width: 32px;
    height: 32px;
    font-size: 0.8rem;
  }

  .period-subject-title {
    font-size: 0.92rem;
  }

  .routine-grid-table td.cell-day-label {
    min-width: 80px;
    font-size: 0.78rem;
    padding: 10px 8px;
  }

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

@media screen and (max-width: 640px) {
  .day-schedule-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
    padding: 12px 14px;
  }

  .day-schedule-title {
    font-size: 0.98rem;
  }

  .routine-type-switcher-wrap {
    width: 100%;
    margin-bottom: 18px;
  }

  .routine-type-toggle {
    display: flex;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    padding: 4px;
    gap: 4px;
    background: #f1f5f9;
  }

  .routine-type-btn {
    flex: 1 1 0;
    min-width: 0;
    padding: 8px 6px;
    font-size: clamp(0.78rem, 2.5vw, 0.86rem);
    justify-content: center;
    gap: 6px;
    white-space: nowrap;
    overflow: hidden;
  }

  .routine-type-btn span:not(.routine-type-badge) {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .routine-type-badge {
    font-size: 0.7rem;
    padding: 1px 6px;
    height: 20px;
    min-width: 20px;
    flex-shrink: 0;
  }

  .routine-period-card {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
    padding: 14px;
  }

  .routine-period-left {
    width: 100%;
  }

  .routine-period-right {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    padding-top: 8px;
    border-top: 1px dashed var(--rt-slate-200);
  }

  .quick-classes-pills {
    padding: 4px 2px 8px;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    -ms-overflow-style: none;
  }

  .quick-classes-pills::-webkit-scrollbar {
    display: none;
    height: 0;
  }

  .class-pill-btn {
    padding: 7px 13px;
    min-height: 38px;
    box-sizing: border-box;
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  .exam-schedule-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
    padding: 14px;
  }
}

@media screen and (max-width: 480px) {
  body[data-page="routine"] .main {
    padding-top: 138px;
  }

  .routine-lead-box {
    padding: 16px 14px;
    border-left-width: 4px;
  }

  .routine-main-h1 {
    font-size: clamp(1.4rem, 5vw, 1.7rem);
    line-height: 1.25;
  }

  .routine-main-subtitle {
    font-size: 0.86rem;
    margin-top: 4px;
  }

  .routine-actions-bar {
    flex-direction: column;
    align-items: stretch;
  }

  .view-mode-toggle {
    width: 100%;
  }

  .view-mode-btn {
    flex: 1;
    justify-content: center;
    min-height: 44px;
  }

  .category-seg-btn {
    min-height: 44px;
  }
}

@media screen and (max-width: 390px) {
  body[data-page="routine"] .main {
    padding-top: 136px;
  }

  .routine-lead-box {
    padding: 14px 10px;
  }

  .routine-control-panel {
    padding: 12px 10px;
  }

  .routine-day-pill {
    min-width: 68px;
    padding: 6px 6px;
  }

  .routine-type-btn {
    padding: 7px 4px;
    font-size: 0.76rem;
    gap: 4px;
    letter-spacing: -0.015em;
  }

  .routine-type-btn i {
    font-size: 0.78rem;
  }

  .routine-type-badge {
    font-size: 0.68rem;
    padding: 1px 5px;
    height: 18px;
    min-width: 18px;
  }
}