/**
 * Utility Seva — Study Timetable Planner Stylesheet
 * Strict Compact UI Layout (< 768px desktop screen height compliance)
 * Fully responsive across desktop, tablet, and mobile with Dark Mode support
 */

:root {
  --primary-color: #4f46e5;
  --primary-hover: #4338ca;
  --primary-light: #eef2ff;
  --primary-glow: rgba(79, 70, 229, 0.25);
  --success-color: #10b981;
  --warning-color: #f59e0b;
  --danger-color: #ef4444;
}

html[data-theme="dark"],
body.dark {
  --primary-color: #6366f1;
  --primary-hover: #4f46e5;
  --primary-light: rgba(99, 102, 241, 0.18);
  --primary-glow: rgba(99, 102, 241, 0.35);
}

/* ==========================================================================
   1. Header & Navigation (Utility Seva Standard Header Integration)
   ========================================================================== */
.site-header .nav-actions {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  flex-shrink: 0;
}

.site-header .theme-toggle-btn {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-md, 8px);
  border: 1px solid var(--border-color, #e2e8f0);
  background-color: var(--bg-surface, #ffffff);
  color: var(--text-secondary, #64748b);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  flex-shrink: 0;
  padding: 0;
  transition: all var(--transition-fast, 0.15s ease);
  position: relative;
  overflow: hidden;
}

.site-header .theme-toggle-btn:hover {
  background-color: var(--bg-surface-alt, #f8fafc);
  color: var(--text-primary, #0f172a);
  border-color: var(--border-color-hover, #cbd5e1);
}

.site-header .theme-toggle-btn svg {
  width: 20px;
  height: 20px;
  display: block;
  flex-shrink: 0;
  margin: auto;
  stroke: currentColor;
  stroke-width: 2;
  transition: transform var(--transition-fast, 0.15s ease);
}

.site-header .theme-toggle-btn .sun-icon {
  display: none;
}

.site-header .theme-toggle-btn .moon-icon {
  display: block;
}

html[data-theme="dark"] .site-header .theme-toggle-btn .sun-icon,
body.dark .site-header .theme-toggle-btn .sun-icon {
  display: block;
  color: #fbbf24;
}

html[data-theme="dark"] .site-header .theme-toggle-btn .moon-icon,
body.dark .site-header .theme-toggle-btn .moon-icon {
  display: none;
}

/* ==========================================================================
   2. Main Layout, Breadcrumbs & Top Bar
   ========================================================================== */
.converter-main {
  padding: 1rem 0 2.5rem;
  background-color: var(--bg-page, #f8fafc);
  min-height: calc(100vh - 140px);
}

html[data-theme="dark"] .converter-main,
body.dark .converter-main {
  background-color: #0b1120;
}

.converter-top-bar {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 0.85rem;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.breadcrumb-nav-compact {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.78rem;
  color: var(--text-muted, #94a3b8);
  margin-bottom: 0.3rem;
}

.breadcrumb-nav-compact a {
  color: var(--text-secondary, #64748b);
  transition: color var(--transition-fast, 0.15s ease);
  text-decoration: none;
}

.breadcrumb-nav-compact a:hover {
  color: var(--brand-600, #4f46e5);
}

.converter-title-row {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  flex-wrap: wrap;
}

.converter-title {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-primary, #0f172a);
  letter-spacing: -0.02em;
  margin: 0;
  line-height: 1.2;
}

html[data-theme="dark"] .converter-title,
body.dark .converter-title {
  color: #f8fafc;
}

.tool-badge-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.22rem 0.6rem;
  border-radius: var(--radius-full, 9999px);
  font-size: 0.72rem;
  font-weight: 600;
  background-color: rgba(16, 185, 129, 0.12);
  color: #10b981;
  border: 1px solid rgba(16, 185, 129, 0.25);
  letter-spacing: 0.01em;
}

.converter-subtitle {
  font-size: 0.82rem;
  color: var(--text-secondary, #64748b);
  margin: 0.2rem 0 0;
  max-width: 820px;
  line-height: 1.4;
}

html[data-theme="dark"] .converter-subtitle,
body.dark .converter-subtitle {
  color: #94a3b8;
}

/* ==========================================================================
   3. Controls Bar & View Switcher
   ========================================================================== */
.calc-controls-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.85rem;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.calc-tabs-group {
  display: inline-flex;
  background-color: var(--bg-surface-alt, #f1f5f9);
  padding: 4px;
  border-radius: var(--radius-md, 8px);
  border: 1px solid var(--border-color, #e2e8f0);
  gap: 4px;
}

html[data-theme="dark"] .calc-tabs-group,
body.dark .calc-tabs-group {
  background-color: #0f172a;
  border-color: #334155;
}

.calc-tab-btn {
  padding: 0.38rem 0.85rem;
  font-size: 0.8rem;
  font-weight: 600;
  border-radius: var(--radius-sm, 6px);
  border: 1px solid transparent;
  background-color: transparent;
  color: var(--text-secondary, #475569);
  cursor: pointer;
  transition: none;
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  user-select: none;
}

.calc-tab-btn svg {
  stroke: currentColor;
  transition: stroke 0.15s ease;
}

.calc-tab-btn:hover:not(.active) {
  color: var(--text-primary, #0f172a);
  background-color: rgba(0, 0, 0, 0.04);
}

html[data-theme="dark"] .calc-tab-btn:hover:not(.active),
body.dark .calc-tab-btn:hover:not(.active) {
  color: #f8fafc;
  background-color: rgba(255, 255, 255, 0.05);
}

.calc-tab-btn.active,
.calc-tab-btn[aria-selected="true"] {
  background-color: #4f46e5 !important;
  color: #ffffff !important;
  border-color: #4338ca !important;
  box-shadow: 0 1px 4px rgba(79, 70, 229, 0.35) !important;
  font-weight: 700 !important;
  transition: none !important;
}

.calc-tab-btn.active svg,
.calc-tab-btn[aria-selected="true"] svg {
  stroke: #ffffff !important;
}

html[data-theme="dark"] .calc-tab-btn.active,
body.dark .calc-tab-btn.active,
html[data-theme="dark"] .calc-tab-btn[aria-selected="true"],
body.dark .calc-tab-btn[aria-selected="true"] {
  background-color: #6366f1 !important;
  color: #ffffff !important;
  border-color: #4f46e5 !important;
  box-shadow: 0 1px 6px rgba(99, 102, 241, 0.45) !important;
  transition: none !important;
}

.calc-quick-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.btn-ghost-sm {
  padding: 0.35rem 0.65rem;
  font-size: 0.76rem;
  font-weight: 600;
  border-radius: var(--radius-sm, 6px);
  border: 1px solid var(--border-color, #e2e8f0);
  background-color: var(--bg-surface, #ffffff);
  color: var(--text-secondary, #64748b);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  transition: all var(--transition-fast, 0.15s ease);
}

.btn-ghost-sm:hover {
  background-color: var(--bg-surface-alt, #f8fafc);
  color: var(--text-primary, #0f172a);
  border-color: var(--border-color-hover, #cbd5e1);
}

html[data-theme="dark"] .btn-ghost-sm,
body.dark .btn-ghost-sm {
  background-color: #1e293b;
  border-color: #334155;
  color: #94a3b8;
}

html[data-theme="dark"] .btn-ghost-sm:hover,
body.dark .btn-ghost-sm:hover {
  background-color: #334155;
  color: #f8fafc;
}

/* Alert Notification Banner */
.converter-alert {
  padding: 0.6rem 0.85rem;
  border-radius: var(--radius-md, 8px);
  background-color: #fef2f2;
  border: 1px solid #fecaca;
  color: #dc2626;
  font-size: 0.8rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.85rem;
  animation: fadeIn 0.2s ease-in-out;
}

.converter-alert svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

html[data-theme="dark"] .converter-alert,
body.dark .converter-alert {
  background-color: rgba(239, 68, 68, 0.12);
  border-color: rgba(239, 68, 68, 0.3);
  color: #f87171;
}

/* ==========================================================================
   4. Main Workspace Grid: Two Columns (1366x768 Compact Layout)
   ========================================================================== */
.timetable-workspace-grid {
  display: grid;
  grid-template-columns: 380px 1fr;
  gap: 1rem;
  align-items: start;
}

@media (max-width: 1080px) {
  .timetable-workspace-grid {
    grid-template-columns: 1fr;
  }
}

.timetable-panel-card {
  background-color: var(--bg-surface, #ffffff);
  border-radius: var(--radius-lg, 12px);
  border: 1px solid var(--border-color, #e2e8f0);
  box-shadow: var(--shadow-sm, 0 1px 2px 0 rgba(0, 0, 0, 0.05));
  padding: 1rem 1.15rem;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  transition: border-color var(--transition-fast, 0.15s ease);
}

html[data-theme="dark"] .timetable-panel-card,
body.dark .timetable-panel-card {
  background-color: #1e293b;
  border-color: #334155;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}

.panel-header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 0.65rem;
  border-bottom: 1px solid var(--border-color, #e2e8f0);
}

html[data-theme="dark"] .panel-header-row,
body.dark .panel-header-row {
  border-bottom-color: #334155;
}

.panel-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary, #0f172a);
  margin: 0;
  display: flex;
  align-items: center;
  gap: 0.45rem;
}

.panel-title svg {
  width: 16px;
  height: 16px;
  color: var(--primary-color, #4f46e5);
}

html[data-theme="dark"] .panel-title,
body.dark .panel-title {
  color: #f8fafc;
}

/* ==========================================================================
   5. Form Controls (Left Panel)
   ========================================================================== */
.session-form-grid {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.form-row-2col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.6rem;
}

@media (max-width: 480px) {
  .form-row-2col {
    grid-template-columns: 1fr;
  }
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.22rem;
}

.input-with-hint {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
}

.session-field-label {
  font-size: 0.76rem;
  font-weight: 600;
  color: var(--text-primary, #0f172a);
}

html[data-theme="dark"] .session-field-label,
body.dark .session-field-label {
  color: #f8fafc;
}

.input-hint-text {
  font-size: 0.68rem;
  color: var(--text-muted, #94a3b8);
}

.session-input-md {
  width: 100%;
  padding: 0.42rem 0.65rem;
  font-size: 0.82rem;
  font-family: inherit;
  border-radius: var(--radius-sm, 6px);
  border: 1px solid var(--border-color, #cbd5e1);
  background-color: var(--bg-surface, #ffffff);
  color: var(--text-primary, #0f172a);
  transition: all var(--transition-fast, 0.15s ease);
}

.session-input-md:focus {
  outline: none;
  border-color: var(--primary-color, #4f46e5);
  box-shadow: 0 0 0 2px var(--primary-glow, rgba(79, 70, 229, 0.2));
}

.session-input-md.input-error {
  border-color: #ef4444 !important;
  background-color: rgba(239, 68, 68, 0.05) !important;
}

html[data-theme="dark"] .session-input-md,
body.dark .session-input-md {
  background-color: #0f172a;
  border-color: #334155;
  color: #f8fafc;
}

select.session-input-md {
  cursor: pointer;
}

textarea.session-input-md {
  min-height: 44px;
  max-height: 70px;
  resize: vertical;
}

/* Color Palette Picker Row */
.color-picker-row {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  margin-top: 0.1rem;
}

.color-radio-btn {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  cursor: pointer;
  border: 2px solid transparent;
  transition: transform 0.15s ease, border-color 0.15s ease;
  position: relative;
}

.color-radio-btn:hover {
  transform: scale(1.15);
}

.color-radio-btn.selected {
  border-color: #ffffff;
  box-shadow: 0 0 0 2px var(--primary-color, #4f46e5);
  transform: scale(1.1);
}

/* Color Palettes */
.palette-indigo { background-color: #4f46e5; }
.palette-emerald { background-color: #10b981; }
.palette-amber  { background-color: #f59e0b; }
.palette-rose   { background-color: #f43f5e; }
.palette-cyan   { background-color: #06b6d4; }
.palette-purple { background-color: #a855f7; }
.palette-blue   { background-color: #3b82f6; }

/* Left Form Actions */
.left-actions-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 0.2rem;
}

.btn-calc-primary {
  flex: 1;
  padding: 0.48rem 0.95rem;
  font-size: 0.82rem;
  font-weight: 700;
  border-radius: var(--radius-sm, 6px);
  border: 1px solid var(--primary-hover, #4338ca);
  background-color: var(--primary-color, #4f46e5);
  color: #ffffff;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  box-shadow: 0 1px 3px rgba(79, 70, 229, 0.3);
  transition: all var(--transition-fast, 0.15s ease);
}

.btn-calc-primary:hover {
  background-color: var(--primary-hover, #4338ca);
  transform: translateY(-1px);
}

.btn-calc-primary svg {
  width: 14px;
  height: 14px;
}

.btn-calc-reset {
  padding: 0.48rem 0.8rem;
  font-size: 0.82rem;
  font-weight: 600;
  border-radius: var(--radius-sm, 6px);
  border: 1px solid var(--border-color, #e2e8f0);
  background-color: var(--bg-surface-alt, #f8fafc);
  color: var(--text-secondary, #64748b);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  transition: all var(--transition-fast, 0.15s ease);
}

.btn-calc-reset:hover {
  background-color: #fee2e2;
  color: #dc2626;
  border-color: #fca5a5;
}

html[data-theme="dark"] .btn-calc-reset,
body.dark .btn-calc-reset {
  background-color: #0f172a;
  border-color: #334155;
  color: #94a3b8;
}

html[data-theme="dark"] .btn-calc-reset:hover,
body.dark .btn-calc-reset:hover {
  background-color: rgba(239, 68, 68, 0.2);
  color: #f87171;
  border-color: rgba(239, 68, 68, 0.4);
}

/* ==========================================================================
   6. Dashboard Summary Grid (Left Panel Lower Card)
   ========================================================================== */
.dashboard-card {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.dashboard-stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.55rem;
}

.dash-stat-box {
  padding: 0.55rem 0.65rem;
  border-radius: var(--radius-sm, 6px);
  background-color: var(--bg-surface-alt, #f8fafc);
  border: 1px solid var(--border-color, #e2e8f0);
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

html[data-theme="dark"] .dash-stat-box {
  background-color: #0f172a;
  border-color: #334155;
}

.dash-stat-label {
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted, #94a3b8);
}

.dash-stat-val {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--text-primary, #0f172a);
  line-height: 1.1;
  font-variant-numeric: tabular-nums;
}

html[data-theme="dark"] .dash-stat-val {
  color: #f8fafc;
}

.dash-stat-sub {
  font-size: 0.68rem;
  color: var(--text-secondary, #64748b);
}

html[data-theme="dark"] .dash-stat-sub {
  color: #94a3b8;
}

/* Progress Bar Component */
.progress-card-section {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.progress-header-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.76rem;
  font-weight: 700;
}

.progress-bar-track {
  width: 100%;
  height: 8px;
  background-color: var(--bg-surface-alt, #e2e8f0);
  border-radius: 9999px;
  overflow: hidden;
}

html[data-theme="dark"] .progress-bar-track {
  background-color: #334155;
}

.progress-bar-fill {
  height: 100%;
  border-radius: 9999px;
  background: linear-gradient(90deg, #4f46e5, #10b981);
  transition: width 0.4s ease;
}

/* ==========================================================================
   7. Weekly & Daily Timetable Views (Right Panel)
   ========================================================================== */
.timetable-view-container {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

/* Day Selector Strip (Daily View) */
.daily-day-tabs {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  overflow-x: auto;
  padding-bottom: 0.2rem;
}

.day-pill-btn {
  padding: 0.35rem 0.65rem;
  font-size: 0.78rem;
  font-weight: 600;
  border-radius: var(--radius-sm, 6px);
  border: 1px solid var(--border-color, #cbd5e1);
  background-color: var(--bg-surface, #ffffff);
  color: var(--text-secondary, #64748b);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  white-space: nowrap;
  transition: all var(--transition-fast, 0.15s ease);
}

.day-pill-btn:hover {
  background-color: var(--bg-surface-alt, #f8fafc);
  color: var(--text-primary, #0f172a);
}

.day-pill-btn.active {
  background-color: var(--primary-color, #4f46e5);
  color: #ffffff;
  border-color: var(--primary-hover, #4338ca);
  font-weight: 700;
}

html[data-theme="dark"] .day-pill-btn {
  background-color: #0f172a;
  border-color: #334155;
  color: #94a3b8;
}

html[data-theme="dark"] .day-pill-btn.active {
  background-color: #6366f1;
  color: #ffffff;
  border-color: #4f46e5;
}

.day-pill-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.05rem 0.35rem;
  border-radius: 9999px;
  font-size: 0.65rem;
  background-color: rgba(0, 0, 0, 0.08);
}

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

/* Weekly Grid: 7 Day Columns / Sections */
.weekly-days-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  max-height: 560px;
  overflow-y: auto;
  padding-right: 4px;
}

.day-section-card {
  border-radius: var(--radius-md, 8px);
  border: 1px solid var(--border-color, #e2e8f0);
  background-color: var(--bg-surface, #ffffff);
  overflow: visible;
  height: auto;
  transition: border-color var(--transition-fast, 0.15s ease);
}

html[data-theme="dark"] .day-section-card {
  background-color: #1e293b;
  border-color: #334155;
}

.day-section-card.is-today {
  border-color: var(--primary-color, #4f46e5);
  box-shadow: 0 0 0 1px var(--primary-color, #4f46e5);
}

html[data-theme="dark"] .day-section-card.is-today {
  border-color: var(--primary-color, #6366f1);
  box-shadow: 0 0 0 1px var(--primary-color, #6366f1);
}

.day-section-header {
  padding: 0.5rem 0.85rem;
  background-color: var(--bg-surface-alt, #f8fafc);
  border-bottom: 1px solid var(--border-color, #e2e8f0);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

html[data-theme="dark"] .day-section-header {
  background-color: #0f172a;
  border-bottom-color: #334155;
}

.day-title-group {
  display: flex;
  align-items: center;
  gap: 0.45rem;
}

.day-name-heading {
  font-size: 0.84rem;
  font-weight: 700;
  color: var(--text-primary, #0f172a);
  margin: 0;
}

html[data-theme="dark"] .day-name-heading {
  color: #f8fafc;
}

.today-pill-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.2rem;
  padding: 0.08rem 0.45rem;
  border-radius: 9999px;
  font-size: 0.65rem;
  font-weight: 700;
  background-color: rgba(79, 70, 229, 0.12);
  color: #4f46e5;
  border: 1px solid rgba(79, 70, 229, 0.25);
}

html[data-theme="dark"] .today-pill-badge {
  background-color: rgba(99, 102, 241, 0.2);
  color: #a5b4fc;
}

.day-stats-meta {
  font-size: 0.72rem;
  color: var(--text-muted, #94a3b8);
  font-weight: 500;
}

/* Sessions Inside Day */
.day-sessions-list {
  padding: 0.55rem;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  height: auto;
  overflow: visible;
}

.session-item-card {
  height: auto;
  min-height: fit-content;
  max-height: none;
  overflow: visible;
  padding: 0.65rem 0.85rem;
  border-radius: var(--radius-sm, 6px);
  border: 1px solid var(--border-color, #e2e8f0);
  background-color: var(--bg-surface-alt, #f8fafc);
  border-left: 4px solid var(--primary-color, #4f46e5);
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.75rem;
  transition: all var(--transition-fast, 0.15s ease);
}

html[data-theme="dark"] .session-item-card {
  background-color: #0f172a;
  border-color: #334155;
}

.session-item-card:hover {
  background-color: #ffffff;
  border-color: #cbd5e1;
  transform: translateY(-1px);
}

html[data-theme="dark"] .session-item-card:hover {
  background-color: #1e293b;
}

/* Color Accents on Session Item Left Border */
.session-item-card.theme-indigo  { border-left-color: #4f46e5; }
.session-item-card.theme-emerald { border-left-color: #10b981; }
.session-item-card.theme-amber   { border-left-color: #f59e0b; }
.session-item-card.theme-rose    { border-left-color: #f43f5e; }
.session-item-card.theme-cyan    { border-left-color: #06b6d4; }
.session-item-card.theme-purple  { border-left-color: #a855f7; }
.session-item-card.theme-blue    { border-left-color: #3b82f6; }

.session-info-left {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  min-width: 0;
  flex: 1 1 240px;
}

.session-title-row {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  flex-wrap: wrap;
  line-height: 1.35;
}

.session-subject-title {
  font-size: 0.86rem;
  font-weight: 700;
  color: var(--text-primary, #0f172a);
  word-break: break-word;
  overflow-wrap: break-word;
}

html[data-theme="dark"] .session-subject-title {
  color: #f8fafc;
}

.session-time-pill {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--text-secondary, #64748b);
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  background-color: rgba(0, 0, 0, 0.05);
  padding: 0.12rem 0.45rem;
  border-radius: 4px;
  white-space: nowrap;
  flex-shrink: 0;
}

html[data-theme="dark"] .session-time-pill {
  background-color: rgba(255, 255, 255, 0.08);
  color: #cbd5e1;
}

.session-topic-sub {
  font-size: 0.75rem;
  color: var(--text-secondary, #475569);
  word-break: break-word;
  overflow-wrap: break-word;
  white-space: normal;
  line-height: 1.4;
}

html[data-theme="dark"] .session-topic-sub {
  color: #cbd5e1;
}

.session-notes-sub {
  font-size: 0.72rem;
  color: var(--text-muted, #64748b);
  font-style: italic;
  word-break: break-word;
  overflow-wrap: break-word;
  white-space: normal;
  line-height: 1.4;
}

html[data-theme="dark"] .session-notes-sub {
  color: #94a3b8;
}

/* Session Controls Right */
.session-controls-right {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  flex-shrink: 0;
  align-self: flex-start;
  margin-top: 2px;
}

/* Status Pill Buttons (Cycle status on click) */
.btn-status-cycle {
  padding: 0.22rem 0.6rem;
  border-radius: 9999px;
  font-size: 0.72rem;
  font-weight: 700;
  cursor: pointer;
  border: 1px solid transparent;
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  white-space: nowrap;
  flex-shrink: 0;
  user-select: none;
  transition: all var(--transition-fast, 0.15s ease);
}

.btn-status-cycle.status-pending {
  background-color: rgba(59, 130, 246, 0.1);
  color: #2563eb;
  border-color: rgba(59, 130, 246, 0.25);
}

.btn-status-cycle.status-completed {
  background-color: rgba(16, 185, 129, 0.15);
  color: #059669;
  border-color: rgba(16, 185, 129, 0.3);
}

.btn-status-cycle.status-missed {
  background-color: rgba(239, 68, 68, 0.12);
  color: #dc2626;
  border-color: rgba(239, 68, 68, 0.25);
}

html[data-theme="dark"] .btn-status-cycle.status-pending {
  background-color: rgba(59, 130, 246, 0.2);
  color: #93c5fd;
}

html[data-theme="dark"] .btn-status-cycle.status-completed {
  background-color: rgba(16, 185, 129, 0.25);
  color: #6ee7b7;
}

html[data-theme="dark"] .btn-status-cycle.status-missed {
  background-color: rgba(239, 68, 68, 0.25);
  color: #f87171;
}

.btn-status-cycle svg {
  width: 12px;
  height: 12px;
}

/* Session Action Buttons */
.session-item-actions {
  display: flex;
  align-items: center;
  gap: 0.2rem;
  flex-shrink: 0;
}

@media (max-width: 640px) {
  .session-item-card {
    flex-direction: column;
    align-items: stretch;
    gap: 0.5rem;
  }

  .session-controls-right {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    margin-top: 0.25rem;
    padding-top: 0.4rem;
    border-top: 1px dashed var(--border-color, #e2e8f0);
  }

  html[data-theme="dark"] .session-controls-right {
    border-top-color: #334155;
  }
}

.btn-session-action {
  width: 26px;
  height: 26px;
  border-radius: 4px;
  border: none;
  background-color: transparent;
  color: var(--text-muted, #94a3b8);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast, 0.15s ease);
}

.btn-session-action:hover {
  background-color: rgba(0, 0, 0, 0.08);
  color: var(--text-primary, #0f172a);
}

.btn-session-action.btn-del:hover {
  background-color: #fee2e2;
  color: #dc2626;
}

html[data-theme="dark"] .btn-session-action:hover {
  background-color: rgba(255, 255, 255, 0.1);
  color: #f8fafc;
}

html[data-theme="dark"] .btn-session-action.btn-del:hover {
  background-color: rgba(239, 68, 68, 0.25);
  color: #f87171;
}

.btn-session-action svg {
  width: 13px;
  height: 13px;
}

.no-sessions-empty {
  padding: 0.65rem 0.5rem;
  text-align: center;
  color: var(--text-muted, #94a3b8);
  font-size: 0.74rem;
  font-style: italic;
}

/* ==========================================================================
   8. Bottom Educational Guidance Section (3 Columns)
   ========================================================================== */
.educational-guide-section {
  margin-top: 1.5rem;
}

.guide-grid-3col {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

@media (max-width: 900px) {
  .guide-grid-3col {
    grid-template-columns: 1fr;
  }
}

.guide-card {
  background-color: var(--bg-surface, #ffffff);
  border: 1px solid var(--border-color, #e2e8f0);
  border-radius: var(--radius-md, 8px);
  padding: 0.95rem;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

html[data-theme="dark"] .guide-card {
  background-color: #1e293b;
  border-color: #334155;
}

.guide-card-header {
  display: flex;
  align-items: center;
  gap: 0.45rem;
}

.guide-icon {
  width: 28px;
  height: 28px;
  border-radius: 6px;
  background-color: rgba(79, 70, 229, 0.1);
  color: var(--primary-color, #4f46e5);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.guide-icon svg {
  width: 14px;
  height: 14px;
}

html[data-theme="dark"] .guide-icon {
  background-color: rgba(99, 102, 241, 0.2);
  color: #a5b4fc;
}

.guide-card-title {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-primary, #0f172a);
  margin: 0;
}

html[data-theme="dark"] .guide-card-title {
  color: #f8fafc;
}

.guide-card p {
  font-size: 0.77rem;
  color: var(--text-secondary, #64748b);
  line-height: 1.45;
  margin: 0;
}

html[data-theme="dark"] .guide-card p {
  color: #94a3b8;
}

/* Floating Toast Notification */
.copy-feedback-toast {
  padding: 0.45rem 0.85rem;
  border-radius: var(--radius-md, 8px);
  background-color: #1e293b;
  color: #ffffff;
  font-size: 0.76rem;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.18);
  animation: fadeIn 0.2s ease-in-out;
  align-self: center;
}

.copy-feedback-toast svg {
  stroke: #10b981;
}

html[data-theme="dark"] .copy-feedback-toast {
  background-color: #334155;
  color: #f8fafc;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ==========================================================================
   9. Clean Print Stylesheet
   ========================================================================== */
@media print {
  .site-header,
  .site-footer,
  .converter-top-bar,
  .calc-controls-bar,
  .educational-guide-section,
  .session-form-card,
  .session-controls-right,
  .copy-feedback-toast,
  .left-actions-row {
    display: none !important;
  }

  body,
  .converter-main {
    background: #ffffff !important;
    color: #000000 !important;
    padding: 0 !important;
  }

  .timetable-workspace-grid {
    display: block !important;
  }

  .timetable-panel-card {
    border: 1px solid #000000 !important;
    box-shadow: none !important;
    padding: 0.5rem !important;
  }

  .weekly-days-list {
    max-height: none !important;
    overflow: visible !important;
  }

  .session-item-card {
    border: 1px solid #666666 !important;
    background: #ffffff !important;
    page-break-inside: avoid;
  }
}