/* ==========================================================================
   Design Tokens & Root Variables
   ========================================================================== */
:root {
  /* Color Palettes - Dark Theme (Default) */
  --bg-primary: #0b0f19;
  --bg-secondary: #111827;
  --card-bg: rgba(31, 41, 55, 0.65);
  --card-border: rgba(255, 255, 255, 0.07);
  --text-main: #f3f4f6;
  --text-muted: #9ca3af;
  --text-inverse: #111827;
  
  /* Brand Accent Colors */
  --primary: #6366f1;
  --primary-hover: #4f46e5;
  --primary-glow: rgba(99, 102, 241, 0.15);
  
  --youtube: #ff0000;
  --youtube-glow: rgba(255, 0, 0, 0.15);
  
  --twitch: #9146ff;
  --twitch-glow: rgba(145, 70, 255, 0.15);
  
  --instagram-start: #f09433;
  --instagram-end: #bc1888;
  --instagram-gradient: linear-gradient(45deg, #f09433 0%, #e6683c 25%, #dc2743 50%, #cc2366 75%, #bc1888 100%);
  --instagram-glow: rgba(188, 24, 136, 0.15);

  --success: #10b981;
  --danger: #ef4444;
  --warning: #f59e0b;
  
  /* UI Constants */
  --sidebar-width: 260px;
  --header-height: 80px;
  --font-main: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --border-radius-lg: 16px;
  --border-radius-md: 12px;
  --border-radius-sm: 8px;
}

/* Light Theme Variables override */
body.light-theme {
  --bg-primary: #f3f4f6;
  --bg-secondary: #ffffff;
  --card-bg: rgba(255, 255, 255, 0.75);
  --card-border: rgba(0, 0, 0, 0.06);
  --text-main: #1f2937;
  --text-muted: #6b7280;
  --text-inverse: #ffffff;
  --primary-glow: rgba(99, 102, 241, 0.08);
  --youtube-glow: rgba(255, 0, 0, 0.08);
  --twitch-glow: rgba(145, 70, 255, 0.08);
  --instagram-glow: rgba(188, 24, 136, 0.08);
}

/* ==========================================================================
   Global Resets & Scrollbar Setup
   ========================================================================== */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-main);
  background-color: var(--bg-primary);
  color: var(--text-main);
  overflow-x: hidden;
  min-height: 100vh;
  transition: background-color 0.3s ease, color 0.3s ease;
}

/* Custom Scrollbars */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
::-webkit-scrollbar-track {
  background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
  background: var(--text-muted);
  border-radius: 10px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--primary);
}

a {
  text-decoration: none;
  color: inherit;
}

button, input, select {
  font-family: inherit;
}

/* ==========================================================================
   Layout Structures (Sidebar, Header, Main)
   ========================================================================== */
.app-container {
  display: flex;
  min-height: 100vh;
}

/* Sidebar */
.sidebar {
  width: var(--sidebar-width);
  background-color: var(--bg-secondary);
  border-right: 1px solid var(--card-border);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  z-index: 100;
  transition: var(--transition-smooth);
}

.sidebar-brand {
  height: var(--header-height);
  display: flex;
  align-items: center;
  padding: 0 24px;
  gap: 12px;
  border-bottom: 1px solid var(--card-border);
}

.brand-logo {
  background: var(--primary);
  color: white;
  width: 40px;
  height: 40px;
  border-radius: var(--border-radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  box-shadow: 0 4px 12px var(--primary-glow);
}

.brand-name {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.5px;
  background: linear-gradient(135deg, var(--text-main), var(--primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.sidebar-menu {
  padding: 24px 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex-grow: 1;
}

.menu-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 16px;
  color: var(--text-muted);
  font-size: 0.95rem;
  font-weight: 500;
  border-radius: var(--border-radius-md);
  transition: var(--transition-smooth);
}

.menu-item i {
  font-size: 1.1rem;
  transition: var(--transition-smooth);
}

.menu-item:hover, .menu-item.active {
  color: var(--text-main);
  background-color: var(--card-border);
}

.menu-item.active {
  background-color: var(--primary-glow);
  color: var(--primary);
}

.menu-item.active i {
  color: var(--primary);
}

.sidebar-footer {
  padding: 24px 16px;
  border-top: 1px solid var(--card-border);
}

.theme-toggle {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 10px;
  border-radius: var(--border-radius-md);
  border: 1px solid var(--card-border);
  background: transparent;
  color: var(--text-muted);
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.theme-toggle:hover {
  color: var(--text-main);
  border-color: var(--text-muted);
}

/* Main Content Wrapper */
.main-content {
  flex-grow: 1;
  margin-left: var(--sidebar-width);
  padding: 40px;
  display: flex;
  flex-direction: column;
  gap: 24px;
  min-height: 100vh;
  transition: var(--transition-smooth);
}

/* Header */
.main-header {
  height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--card-border);
  padding-bottom: 24px;
}

.page-title-group h1 {
  font-size: 1.8rem;
  font-weight: 800;
  letter-spacing: -0.5px;
}

.page-title-group p {
  font-size: 0.9rem;
  margin-top: 4px;
}

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

.sidebar-toggle-mobile {
  display: none;
  background: transparent;
  border: 1px solid var(--card-border);
  color: var(--text-main);
  padding: 8px 12px;
  border-radius: var(--border-radius-sm);
  cursor: pointer;
}

/* Week Selector Styles */
.week-selector-group {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--bg-secondary);
  border: 1px solid var(--card-border);
  padding: 6px 12px;
  border-radius: var(--border-radius-md);
}

.week-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
}

.select-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.select-wrapper select {
  appearance: none;
  -webkit-appearance: none;
  background: transparent;
  border: none;
  color: var(--text-main);
  font-weight: 600;
  font-size: 0.9rem;
  padding-right: 24px;
  padding-left: 4px;
  cursor: pointer;
  outline: none;
}

.select-wrapper i {
  position: absolute;
  right: 4px;
  pointer-events: none;
  color: var(--text-muted);
  font-size: 0.75rem;
}

/* ==========================================================================
   Alerts & Banners
   ========================================================================== */

/* ==========================================================================
   Tab Content & Panel Routing
   ========================================================================== */
.tab-panel {
  display: none;
  animation: fadeIn 0.4s ease;
}

.tab-panel.active {
  display: block;
}

/* ==========================================================================
   Premium Cards (Glassmorphism, Brand Borders)
   ========================================================================== */
.glass {
  background: var(--card-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--card-border);
  border-radius: var(--border-radius-lg);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
  transition: var(--transition-smooth);
}

.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
  margin-bottom: 24px;
}

.kpi-card {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  position: relative;
  overflow: hidden;
}

.kpi-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: transparent;
}

/* Platform borders */
.youtube-border::before { background: var(--youtube); }
.ig-border::before { background: var(--instagram-gradient); }
.twitch-border::before { background: var(--twitch); }

.kpi-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 35px rgba(0, 0, 0, 0.25);
  border-color: rgba(255, 255, 255, 0.12);
}

.kpi-card.youtube-border:hover { box-shadow: 0 12px 30px var(--youtube-glow); }
.kpi-card.ig-border:hover { box-shadow: 0 12px 30px var(--instagram-glow); }
.kpi-card.twitch-border:hover { box-shadow: 0 12px 30px var(--twitch-glow); }

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

.kpi-title {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.platform-icon {
  font-size: 1.3rem;
}

.yt-color { color: var(--youtube); }
.ig-color {
  background: var(--instagram-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.twitch-color { color: var(--twitch); }

.kpi-value-group {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
}

.kpi-value {
  font-size: 2.2rem;
  font-weight: 800;
  letter-spacing: -1px;
}

.kpi-trend {
  font-size: 0.85rem;
  font-weight: 700;
  padding: 4px 8px;
  border-radius: var(--border-radius-sm);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.trend-up {
  background-color: rgba(16, 185, 129, 0.12);
  color: var(--success);
}

.trend-down {
  background-color: rgba(239, 68, 68, 0.12);
  color: var(--danger);
}

.trend-flat {
  background-color: rgba(156, 163, 175, 0.12);
  color: var(--text-muted);
}

.kpi-footer {
  font-size: 0.8rem;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 12px;
}

.highlight-text {
  font-weight: 700;
  color: var(--primary);
}

/* History table — selected week / range row */
.history-row-selected {
  background: rgba(99, 102, 241, 0.13) !important;
  border-left: 3px solid var(--primary);
  box-shadow: inset 4px 0 0 var(--primary);
}
.history-row-selected td {
  font-weight: 600;
  color: var(--text-primary);
}

.history-wk-badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-muted);
  background: rgba(148, 163, 184, 0.12);
  border-radius: 5px;
  padding: 1px 7px;
  margin-right: 6px;
}
.history-wk-badge.active {
  color: var(--primary);
  background: rgba(99, 102, 241, 0.15);
}
.history-wk-year {
  font-size: 0.72rem;
  color: var(--text-muted);
  opacity: 0.6;
}

/* ==========================================================================
   Section Layouts & Charts
   ========================================================================== */
.section-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.span-2 {
  grid-column: span 2;
}

.card {
  padding: 28px;
}

.card-header {
  margin-bottom: 24px;
}

.card-title {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.2px;
}

.chart-container-wrapper {
  position: relative;
  width: 100%;
  height: 320px;
}

.pie-chart-container {
  max-width: 250px;
  margin: 0 auto;
  position: relative;
  height: 100%;
}

.live-chart-height {
  height: 200px;
}

/* Progress bar gauge */
.gauge-bar-bg {
  background-color: rgba(255, 255, 255, 0.08);
  height: 6px;
  border-radius: 10px;
  margin-top: 4px;
  overflow: hidden;
}

.gauge-bar-fill {
  background-color: var(--primary);
  height: 100%;
  border-radius: 10px;
  transition: width 1s ease-in-out;
}

/* ==========================================================================
   Table Designs
   ========================================================================== */
.table-responsive {
  width: 100%;
  overflow-x: auto;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

.data-table th, .data-table td {
  padding: 16px 24px;
  border-bottom: 1px solid var(--card-border);
}

.data-table th {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.data-table td {
  font-size: 0.95rem;
  font-weight: 500;
}

.data-table tbody tr:hover {
  background-color: rgba(255, 255, 255, 0.02);
}

/* ==========================================================================
   Video / Shorts Performance Table
   ========================================================================== */
.video-table th:first-child,
.video-table td:first-child {
  max-width: 320px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.video-type-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.3px;
  text-transform: uppercase;
  white-space: nowrap;
}

.video-type-badge.type-video {
  background: rgba(239, 68, 68, 0.12);
  color: #ef4444;
  border: 1px solid rgba(239, 68, 68, 0.2);
}

.video-type-badge.type-shorts {
  background: rgba(99, 102, 241, 0.12);
  color: #818cf8;
  border: 1px solid rgba(99, 102, 241, 0.2);
}

.video-type-badge i {
  font-size: 0.7rem;
}

.video-actions {
  display: flex;
  gap: 6px;
}

.btn-icon-xs {
  width: 30px;
  height: 30px;
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--border-radius-sm);
  border: 1px solid var(--card-border);
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 0.8rem;
  transition: var(--transition-smooth);
}

.btn-icon-xs:hover {
  color: var(--text-main);
  border-color: var(--text-muted);
  background: rgba(255, 255, 255, 0.04);
}

.btn-icon-xs.btn-delete:hover {
  color: var(--danger);
  border-color: var(--danger);
  background: rgba(239, 68, 68, 0.08);
}

.btn-sm {
  padding: 8px 16px;
  font-size: 0.8rem;
}

.yt-videos-empty-state {
  text-align: center;
  padding: 40px 20px;
  color: var(--text-muted);
}

.yt-videos-empty-state i {
  font-size: 2.5rem;
  margin-bottom: 16px;
  opacity: 0.4;
}

.yt-videos-empty-state p {
  font-size: 0.9rem;
  line-height: 1.6;
}

.video-views-bar {
  display: flex;
  align-items: center;
  gap: 8px;
}

.video-views-bar .mini-bar-bg {
  flex-grow: 1;
  height: 4px;
  background: rgba(255, 255, 255, 0.06);
  border-radius: 4px;
  overflow: hidden;
  min-width: 40px;
  max-width: 80px;
}

.video-views-bar .mini-bar-fill {
  height: 100%;
  border-radius: 4px;
  transition: width 0.6s ease;
}

.video-views-bar .mini-bar-fill.bar-video {
  background: var(--youtube);
}

.video-views-bar .mini-bar-fill.bar-shorts {
  background: var(--primary);
}

/* ==========================================================================
   Live Simulator Styles
   ========================================================================== */
.live-indicator-dot {
  display: inline-block;
  width: 10px;
  height: 10px;
  background-color: var(--danger);
  border-radius: 50%;
  margin-right: 6px;
  animation: pulse 1.5s infinite;
}

.live-badge {
  background-color: rgba(255, 255, 255, 0.1);
  color: var(--text-muted);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 20px;
  letter-spacing: 0.5px;
}

.live-badge.live {
  background-color: var(--danger);
  color: white;
  box-shadow: 0 0 10px rgba(239, 68, 68, 0.4);
}

.live-sim-panel {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.live-sim-header {
  display: flex;
  gap: 24px;
  background: rgba(255, 255, 255, 0.03);
  padding: 12px 18px;
  border-radius: var(--border-radius-md);
  border: 1px solid var(--card-border);
}

.live-sim-meta {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.live-sim-meta .label {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.live-sim-meta strong {
  font-size: 0.9rem;
}

/* ==========================================================================
   Forms & Buttons (Settings Layout)
   ========================================================================== */
.settings-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
  gap: 24px;
}

.form-group {
  margin-bottom: 20px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: 0.85rem;
  font-weight: 600;
}

input[type="text"], input[type="number"], input[type="password"], select {
  background: var(--bg-primary);
  border: 1px solid var(--card-border);
  color: var(--text-main);
  padding: 12px 16px;
  border-radius: var(--border-radius-md);
  font-size: 0.9rem;
  outline: none;
  transition: var(--transition-smooth);
}

input:focus, select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-glow);
}

.input-help {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 4px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  border-radius: var(--border-radius-md);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: var(--transition-smooth);
}

.btn-primary {
  background-color: var(--primary);
  color: white;
}

.btn-primary:hover {
  background-color: var(--primary-hover);
  box-shadow: 0 4px 15px var(--primary-glow);
}

.btn-secondary {
  background-color: transparent;
  color: var(--text-main);
  border: 1px solid var(--card-border);
}

.btn-secondary:hover {
  background-color: var(--card-border);
}

.btn-danger {
  background-color: rgba(239, 68, 68, 0.15);
  color: var(--danger);
  border: 1px solid rgba(239, 68, 68, 0.25);
}

.btn-danger:hover {
  background-color: var(--danger);
  color: white;
}

.btn-icon-only {
  padding: 10px;
  width: 38px;
  height: 38px;
  border-radius: var(--border-radius-sm);
}

.w-full { width: 100%; }
.text-center { text-align: center; }
.cursor-pointer { cursor: pointer; }
.block { display: block; }
.mt-4 { margin-top: 16px; }
.mb-4 { margin-bottom: 16px; }
.mt-2 { margin-top: 8px; }
.inline-form {
  display: flex;
  gap: 12px;
  align-items: flex-start;
}
.inline-form .input-wrapper {
  flex-grow: 1;
}

.form-divider {
  border: 0;
  height: 1px;
  background: var(--card-border);
  margin: 24px 0;
}

.text-youtube { color: var(--youtube); }
.text-twitch { color: var(--twitch); }
.sub-section-title {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 12px;
  text-transform: uppercase;
}

/* Toggle Switch */
.toggle-group {
  flex-direction: row;
  justify-content: space-between;
  align-items: center;
}

.switch-label-group {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.switch-text-main {
  font-size: 0.95rem;
  font-weight: 600;
}

.switch-text-sub {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.toggle-switch {
  position: relative;
  display: inline-block;
  width: 50px;
  height: 28px;
}

.toggle-switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.toggle-slider {
  position: absolute;
  cursor: pointer;
  top: 0; left: 0; right: 0; bottom: 0;
  background-color: var(--card-border);
  transition: .4s;
  border-radius: 34px;
}

.toggle-slider:before {
  position: absolute;
  content: "";
  height: 20px;
  width: 20px;
  left: 4px;
  bottom: 4px;
  background-color: white;
  transition: .4s;
  border-radius: 50%;
}

.toggle-switch input:checked + .toggle-slider {
  background-color: var(--primary);
}

.toggle-switch input:checked + .toggle-slider:before {
  transform: translateX(22px);
}

/* Inner Tabs for Manual Input */
.inner-tabs {
  display: flex;
  border-bottom: 1px solid var(--card-border);
  margin-bottom: 20px;
  gap: 4px;
}

.inner-tab-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  padding: 10px 16px;
  font-weight: 600;
  font-size: 0.85rem;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: var(--transition-smooth);
}

.inner-tab-btn:hover {
  color: var(--text-main);
}

.inner-tab-btn.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
}

.inner-panel {
  display: none;
  animation: fadeIn 0.3s ease;
}

.inner-panel.active {
  display: block;
}

.form-row {
  display: flex;
  gap: 20px;
  margin-bottom: 16px;
}

.form-col {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.gender-input-group {
  display: flex;
  align-items: center;
  gap: 12px;
}

.gender-input-group input {
  flex: 1;
}

.gender-input-group .split {
  color: var(--text-muted);
  font-weight: 700;
}

.toast-message {
  margin-left: 12px;
  font-size: 0.85rem;
  font-weight: 600;
}
.toast-success { color: var(--success); }
.toast-error { color: var(--danger); }

/* Alert Box */
.alert-info-box {
  background-color: rgba(99, 102, 241, 0.08);
  border: 1px solid rgba(99, 102, 241, 0.15);
  color: var(--text-main);
  padding: 14px 18px;
  border-radius: var(--border-radius-md);
  display: flex;
  gap: 12px;
  font-size: 0.85rem;
  line-height: 1.5;
}

.alert-info-box i {
  color: var(--primary);
  font-size: 1.15rem;
  margin-top: 2px;
}

.btn-flex-group {
  display: flex;
  flex-direction: column;
}

/* ==========================================================================
   Modal Dialog Layouts
   ========================================================================== */
.modal-backdrop {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background-color: rgba(11, 15, 25, 0.85);
  backdrop-filter: blur(8px);
  z-index: 1000;
  display: none;
  align-items: center;
  justify-content: center;
  animation: fadeIn 0.3s ease;
}

.modal-backdrop.active {
  display: flex;
}

.modal-box {
  width: 100%;
  max-width: 460px;
  padding: 28px;
  animation: scaleUp 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

.modal-header h3 {
  font-size: 1.25rem;
  font-weight: 700;
}

.modal-close {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 1.5rem;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.modal-close:hover {
  color: var(--text-main);
}

/* ==========================================================================
   Animations
   ========================================================================== */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-16px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes scaleUp {
  from { transform: scale(0.95); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

@keyframes pulse {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.7); }
  70% { transform: scale(1); box-shadow: 0 0 0 6px rgba(239, 68, 68, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(239, 68, 68, 0); }
}

/* ==========================================================================
   Responsive Adaptations
   ========================================================================== */
@media (max-width: 1024px) {
  .section-grid {
    grid-template-columns: 1fr;
  }
  .span-2 {
    grid-column: auto;
  }
}

/* ==========================================================================
   Twitch Tab — Sync Bar, Tier Badges, Revenue Card
   ========================================================================== */
.twitch-sync-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  background: rgba(145, 70, 255, 0.06);
  border: 1px solid rgba(145, 70, 255, 0.18);
  border-radius: 10px;
  margin-bottom: 20px;
}

.btn-twitch {
  background: var(--twitch);
  color: #fff;
  border: none;
  font-weight: 600;
}
.btn-twitch:hover { background: #7d3de0; color: #fff; }

.twitch-tier-row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.tier-badge {
  font-size: 0.72rem;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 5px;
  letter-spacing: 0.3px;
}
.tier-badge.t1 { background: rgba(145,70,255,0.15); color: #b280ff; }
.tier-badge.t2 { background: rgba(99,102,241,0.15); color: #818cf8; }
.tier-badge.t3 { background: rgba(234,179,8,0.15);  color: #fbbf24; }

.revenue-card { position: relative; }
.revenue-card::after {
  content: '≈ 估算值';
  position: absolute;
  top: 12px; right: 14px;
  font-size: 0.65rem;
  color: var(--text-muted);
  background: rgba(148,163,184,0.1);
  padding: 2px 6px;
  border-radius: 4px;
}

/* ==========================================================================
   IG 貼文明細 — Type Badges, Engagement Rate, Empty State
   ========================================================================== */
.ig-type-badge {
  display: inline-block;
  font-size: 0.65rem;
  font-weight: 700;
  padding: 2px 7px;
  border-radius: 5px;
  margin-right: 6px;
  letter-spacing: 0.3px;
  vertical-align: middle;
}
.ig-type-badge.reels {
  background: linear-gradient(135deg, rgba(225,48,108,0.18), rgba(64,93,230,0.18));
  color: #e1306c;
  border: 1px solid rgba(225,48,108,0.3);
}
.ig-type-badge.post {
  background: rgba(99,102,241,0.12);
  color: #818cf8;
  border: 1px solid rgba(99,102,241,0.2);
}

.post-title-cell {
  max-width: 260px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.eng-rate-badge {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 5px;
  background: rgba(16,185,129,0.12);
  color: #34d399;
}

.gender-pct {
  font-size: 0.82rem;
  font-weight: 600;
  padding: 2px 7px;
  border-radius: 5px;
}
.gender-pct.male-pct   { background: rgba(99,102,241,0.13); color: #818cf8; }
.gender-pct.female-pct { background: rgba(236,72,153,0.13); color: #f472b6; }

.gender-mini-bar {
  display: flex;
  height: 4px;
  border-radius: 2px;
  overflow: hidden;
  margin-top: 5px;
  width: 100%;
  max-width: 80px;
}
.gender-mini-male   { background: #818cf8; }
.gender-mini-female { background: #f472b6; }

.empty-state-inline {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 2.5rem 1rem;
  text-align: center;
  gap: 0.4rem;
}

/* ==========================================================================
   Twitch OAuth Connect Section
   ========================================================================== */
.twitch-oauth-section {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 20px;
}

.twitch-connect-status {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border-radius: var(--border-radius-md);
  border: 1px solid;
  transition: var(--transition-smooth);
}

.twitch-connect-status.disconnected {
  background: rgba(156, 163, 175, 0.06);
  border-color: rgba(156, 163, 175, 0.2);
  color: var(--text-muted);
}

.twitch-connect-status.connected {
  background: rgba(145, 70, 255, 0.08);
  border-color: rgba(145, 70, 255, 0.3);
  color: var(--text-main);
}

.twitch-connect-status.error {
  background: rgba(239, 68, 68, 0.08);
  border-color: rgba(239, 68, 68, 0.25);
  color: var(--danger);
}

.twitch-connect-status .status-icon {
  font-size: 1.3rem;
  flex-shrink: 0;
}

.twitch-connect-status.connected .status-icon { color: var(--twitch); }
.twitch-connect-status.disconnected .status-icon { color: var(--text-muted); }
.twitch-connect-status.error .status-icon { color: var(--danger); }

.twitch-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--twitch);
  flex-shrink: 0;
}

.status-info {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.status-label {
  font-size: 0.9rem;
  font-weight: 600;
}

.status-sub {
  font-size: 0.78rem;
  color: var(--text-muted);
}

.btn-twitch-connect {
  background: var(--twitch);
  color: white;
  gap: 10px;
  padding: 12px 20px;
  border-radius: var(--border-radius-md);
  font-size: 0.9rem;
  font-weight: 700;
  border: none;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-smooth);
}

.btn-twitch-connect:hover {
  background: #7c3aed;
  box-shadow: 0 4px 15px var(--twitch-glow);
}

.btn-twitch-connect:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-twitch-disconnect {
  background: transparent;
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: var(--danger);
  padding: 6px 10px;
  border-radius: var(--border-radius-sm);
  font-size: 0.8rem;
  cursor: pointer;
  flex-shrink: 0;
  transition: var(--transition-smooth);
}

.btn-twitch-disconnect:hover {
  background: rgba(239, 68, 68, 0.12);
}

.redirect-uri-hint {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--card-border);
  border-radius: var(--border-radius-md);
  padding: 12px 14px;
  font-size: 0.8rem;
  color: var(--text-muted);
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.redirect-uri-hint a {
  color: var(--primary);
  text-decoration: underline;
}

.redirect-uri-code {
  background: var(--bg-primary);
  border: 1px solid var(--card-border);
  border-radius: var(--border-radius-sm);
  padding: 6px 10px;
  font-family: 'Courier New', monospace;
  font-size: 0.78rem;
  color: var(--twitch);
  word-break: break-all;
  user-select: all;
}

.text-sm { font-size: 0.8rem; }
.link-external { color: var(--primary); text-decoration: underline; }

/* Manual Token Section */
.manual-token-details {
  border: 1px solid var(--card-border);
  border-radius: var(--border-radius-md);
  overflow: hidden;
}

.manual-token-summary {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
  cursor: pointer;
  list-style: none;
  background: rgba(255,255,255,0.02);
  transition: var(--transition-smooth);
}

.manual-token-summary::-webkit-details-marker { display: none; }

.manual-token-summary:hover {
  color: var(--text-main);
  background: rgba(255,255,255,0.04);
}

.manual-token-details[open] .manual-token-summary {
  color: var(--primary);
  border-bottom: 1px solid var(--card-border);
}

.manual-token-summary .chevron-icon {
  margin-left: auto;
  transition: transform 0.3s ease;
}

.manual-token-details[open] .chevron-icon {
  transform: rotate(180deg);
}

.manual-token-body {
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.manual-steps {
  padding-left: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.manual-steps li {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.manual-steps a {
  color: var(--primary);
  text-decoration: underline;
}

.inline-code {
  background: var(--bg-primary);
  border: 1px solid var(--card-border);
  border-radius: 4px;
  padding: 1px 6px;
  font-family: 'Courier New', monospace;
  font-size: 0.78rem;
  color: var(--twitch);
}

.manual-url-display {
  display: block;
  width: 100%;
  white-space: pre-wrap;
  word-break: break-all;
  font-size: 0.72rem;
  line-height: 1.5;
  min-height: 36px;
  cursor: text;
}

.oauth-url-row {
  width: 100%;
}

.oauth-url-actions {
  display: flex;
  gap: 8px;
}

/* ==========================================================================
   Misc utilities
   ========================================================================== */
.d-flex-between {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
}

.form-week-selector {
  display: flex;
  align-items: center;
  gap: 12px;
}

.inline-select {
  min-width: 160px;
}

.backup-section { width: 100%; }

.icon-margin { margin-right: 6px; }

@media (max-width: 768px) {
  /* Sidebar Mobile Layout */
  .sidebar {
    transform: translateX(-100%);
  }
  .sidebar.mobile-open {
    transform: translateX(0);
  }
  
  .main-content {
    margin-left: 0;
    padding: 20px;
  }
  
  .sidebar-toggle-mobile {
    display: block;
    margin-right: 12px;
  }
  
  .main-header {
    flex-direction: column;
    height: auto;
    align-items: flex-start;
    gap: 16px;
  }
  
  .header-left {
    display: flex;
    align-items: center;
  }
  
  .header-right {
    width: 100%;
  }
  
  .week-selector-group {
    width: 100%;
    justify-content: space-between;
  }
  
  .settings-grid {
    grid-template-columns: 1fr;
  }
  
  .form-row {
    flex-direction: column;
    gap: 16px;
  }
}

/* ==========================================================================
   Calendar Week Picker
   ========================================================================== */
.calendar-picker-wrapper {
  position: relative;
}

.btn-calendar-trigger {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--card-border);
  border-radius: var(--border-radius-sm);
  color: var(--text-main);
  font-family: var(--font-main);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  transition: var(--transition-smooth);
  min-width: 160px;
}
.btn-calendar-trigger:hover {
  background: rgba(255,255,255,0.1);
  border-color: var(--primary);
}
.btn-calendar-trigger .fa-chevron-down {
  margin-left: auto;
  font-size: 0.75rem;
  color: var(--text-muted);
  transition: transform 0.2s;
}
.btn-calendar-trigger.open .fa-chevron-down {
  transform: rotate(180deg);
}

.calendar-popup {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  z-index: 999;
  background: var(--bg-secondary);
  border: 1px solid var(--card-border);
  border-radius: var(--border-radius-md);
  box-shadow: 0 20px 60px rgba(0,0,0,0.4);
  width: 320px;
  padding: 16px;
  animation: fadeSlideDown 0.18s ease;
}
@keyframes fadeSlideDown {
  from { opacity: 0; transform: translateY(-8px); }
  to   { opacity: 1; transform: translateY(0); }
}

.cal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}
.cal-month-label {
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--text-main);
}
.cal-nav-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 4px 8px;
  border-radius: 6px;
  font-size: 0.875rem;
  transition: background 0.2s;
}
.cal-nav-btn:hover { background: rgba(255,255,255,0.08); color: var(--text-main); }

.cal-mode-toggle {
  display: flex;
  gap: 4px;
  margin-bottom: 12px;
  background: rgba(255,255,255,0.04);
  border-radius: 8px;
  padding: 3px;
}
.cal-mode-btn {
  flex: 1;
  padding: 5px;
  font-size: 0.75rem;
  font-weight: 600;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  background: transparent;
  color: var(--text-muted);
  font-family: var(--font-main);
  transition: all 0.2s;
}
.cal-mode-btn.active {
  background: var(--primary);
  color: #fff;
}

.cal-grid {
  width: 100%;
  border-collapse: collapse;
}
.cal-grid th {
  font-size: 0.7rem;
  color: var(--text-muted);
  text-align: center;
  padding: 4px 2px 8px;
  font-weight: 600;
}
.cal-grid th.cal-wk-th { color: var(--primary); }
.cal-week-row {
  cursor: pointer;
  border-radius: 6px;
  transition: background 0.15s;
}
.cal-week-row:hover .cal-day { background: rgba(99,102,241,0.12); }
.cal-week-row.has-data .cal-wk-num { color: var(--primary); font-weight: 700; }
.cal-week-row.selected .cal-day { background: rgba(99,102,241,0.25); }
.cal-week-row.selected .cal-day:first-child { border-radius: 6px 0 0 6px; }
.cal-week-row.selected .cal-day:last-child { border-radius: 0 6px 6px 0; }
.cal-week-row.range-start .cal-day { background: var(--primary); color: #fff; border-radius: 6px 0 0 6px; }
.cal-week-row.range-end .cal-day { background: var(--primary); color: #fff; border-radius: 0 6px 6px 0; }
.cal-week-row.in-range .cal-day { background: rgba(99,102,241,0.15); }

.cal-wk-num {
  font-size: 0.7rem;
  color: var(--text-muted);
  text-align: center;
  padding: 6px 4px;
  width: 28px;
}
.cal-day {
  text-align: center;
  padding: 6px 2px;
  font-size: 0.8rem;
  color: var(--text-main);
  width: 36px;
}
.cal-day.other-month { color: rgba(156,163,175,0.35); }
.cal-day.today-cell { font-weight: 700; color: var(--primary); }

.cal-footer {
  margin-top: 12px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.cal-range-hint {
  font-size: 0.72rem;
  color: var(--text-muted);
}
.cal-today-btn {
  font-size: 0.75rem;
  padding: 4px 10px;
  background: rgba(99,102,241,0.15);
  border: none;
  border-radius: 6px;
  color: var(--primary);
  cursor: pointer;
  font-family: var(--font-main);
  font-weight: 600;
}
.cal-today-btn:hover { background: rgba(99,102,241,0.3); }

/* 日曆雙欄版面 */
.calendar-popup { width: 560px; }
.cal-two-panel {
  display: flex;
  gap: 14px;
}
.cal-left-panel {
  flex: 0 0 auto;
  width: 260px;
}
.cal-right-panel {
  flex: 1;
  min-width: 0;
  border-left: 1px solid var(--card-border);
  padding-left: 14px;
  display: flex;
  flex-direction: column;
}
.cal-right-title {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--text-muted);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 10px;
}
.cal-right-scroll {
  flex: 1;
  overflow-y: auto;
  max-height: 220px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.cal-right-scroll::-webkit-scrollbar { width: 4px; }
.cal-right-scroll::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.12); border-radius: 2px; }
.cal-month-group {}
.cal-month-group-label {
  font-size: 0.68rem;
  font-weight: 700;
  color: var(--text-muted);
  margin-bottom: 5px;
  letter-spacing: 0.04em;
}
.cal-week-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
}
.cal-week-chip {
  padding: 4px 9px;
  border-radius: 6px;
  border: 1px solid var(--card-border);
  background: rgba(255,255,255,0.04);
  color: var(--text-muted);
  font-size: 0.72rem;
  font-weight: 600;
  cursor: pointer;
  font-family: var(--font-main);
  transition: all 0.15s;
}
.cal-week-chip:hover { background: rgba(99,102,241,0.18); border-color: var(--primary); color: var(--primary); }
.cal-week-chip.active { background: var(--primary); border-color: var(--primary); color: #fff; }
.cal-week-chip.in-range { background: rgba(99,102,241,0.15); border-color: rgba(99,102,241,0.4); color: var(--primary); }

/* AI 摘要按鈕 */
.btn-ai-summary {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  border-radius: 8px;
  border: 1px solid rgba(139,92,246,0.4);
  background: rgba(139,92,246,0.12);
  color: #a78bfa;
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  font-family: var(--font-main);
  transition: all 0.2s;
}
.btn-ai-summary:hover { background: rgba(139,92,246,0.25); border-color: rgba(139,92,246,0.7); }
.btn-ai-summary:disabled { opacity: 0.5; cursor: not-allowed; }

/* AI 摘要面板 */
#ai-summary-panel {
  margin: 0 16px 16px;
  padding: 20px 24px;
  background: var(--bg-secondary);
  border: 1px solid rgba(139,92,246,0.3);
  border-radius: var(--border-radius-md);
  display: none;
}
#ai-summary-panel.visible { display: block; }
.ai-summary-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 14px;
}
.ai-summary-title {
  font-size: 0.9rem;
  font-weight: 700;
  color: #a78bfa;
  display: flex;
  align-items: center;
  gap: 7px;
}
.ai-summary-close {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 1rem;
}
.ai-summary-body {
  font-size: 0.85rem;
  line-height: 1.7;
  color: var(--text-main);
  white-space: pre-wrap;
}
.ai-summary-body strong { color: #a78bfa; }
.ai-loading-dots span {
  animation: blink 1.2s infinite;
  font-size: 1.5rem;
  color: #a78bfa;
}
.ai-loading-dots span:nth-child(2) { animation-delay: 0.2s; }
.ai-loading-dots span:nth-child(3) { animation-delay: 0.4s; }
@keyframes blink { 0%,80%,100% { opacity:0; } 40% { opacity:1; } }

/* ==========================================================================
   Content Tracking Tab
   ========================================================================== */
.content-filter-row {
  display: flex;
  align-items: center;
  gap: 10px;
}
.content-search-input {
  padding: 8px 12px;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--card-border);
  border-radius: var(--border-radius-sm);
  color: var(--text-main);
  font-family: var(--font-main);
  font-size: 0.875rem;
  width: 180px;
}
.content-search-input::placeholder { color: var(--text-muted); }
.content-table .type-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 8px;
  border-radius: 99px;
  font-size: 0.72rem;
  font-weight: 700;
}
.type-badge.shorts { background: rgba(255,0,0,0.15); color: #ff4444; }
.type-badge.video  { background: rgba(99,102,241,0.15); color: var(--primary); }

/* ==========================================================================
   Maintenance Guide Tab
   ========================================================================== */
.maintenance-guide { display: flex; flex-direction: column; gap: 0; }
.maintenance-guide .card { margin-bottom: 24px; }
.maintenance-guide .mb-4 { margin-bottom: 24px; }

/* Ordered steps list */
.guide-steps {
  list-style: none;
  padding: 0;
  margin: 0;
  counter-reset: step-counter;
}
.guide-steps li {
  counter-increment: step-counter;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 0;
  border-bottom: 1px solid var(--card-border);
  font-size: 0.9rem;
  color: var(--text-main);
  line-height: 1.6;
}
.guide-steps li:last-child { border-bottom: none; }
.guide-steps li::before {
  content: counter(step-counter);
  flex-shrink: 0;
  width: 26px;
  height: 26px;
  background: var(--primary-glow);
  color: var(--primary);
  border: 1px solid rgba(99,102,241,0.35);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
  margin-top: 1px;
}

/* Platform step badges */
.step-platform {
  display: inline-flex;
  align-items: center;
  padding: 2px 10px;
  border-radius: 99px;
  font-size: 0.72rem;
  font-weight: 700;
  white-space: nowrap;
  flex-shrink: 0;
}
.step-yt   { background: rgba(255,0,0,0.15); color: #ff4444; }
.step-ig   { background: var(--instagram-glow); color: #e1306c; }
.step-tw   { background: var(--twitch-glow); color: var(--twitch); }
.step-dash { background: var(--primary-glow); color: var(--primary); }

/* Code inline */
.guide-steps code,
.maintenance-guide code {
  font-family: 'Courier New', Courier, monospace;
  font-size: 0.82em;
  background: rgba(99,102,241,0.1);
  color: #a5b4fc;
  padding: 2px 6px;
  border-radius: 4px;
  border: 1px solid rgba(99,102,241,0.2);
}

/* Guide table */
.guide-table td:first-child { font-family: 'Courier New', monospace; font-size: 0.82rem; color: #a5b4fc; white-space: nowrap; }
.guide-table td:nth-child(3) { font-size: 0.8rem; color: var(--text-muted); white-space: nowrap; }

/* Guide note box */
.guide-note {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-top: 16px;
  padding: 12px 16px;
  background: rgba(245,158,11,0.08);
  border: 1px solid rgba(245,158,11,0.25);
  border-radius: var(--border-radius-sm);
  font-size: 0.85rem;
  color: var(--text-main);
  line-height: 1.6;
}
.guide-note i { color: #fbbf24; margin-top: 2px; flex-shrink: 0; }

/* Guide link */
.guide-link {
  color: var(--primary);
  text-decoration: underline;
  text-underline-offset: 2px;
}
.guide-link:hover { color: #a5b4fc; }

/* Sheet list */
.guide-sheet-list { display: flex; flex-direction: column; gap: 12px; }
.guide-sheet-item {
  padding: 14px 16px;
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--card-border);
  border-radius: var(--border-radius-sm);
}
.guide-sheet-name {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--text-main);
  margin-bottom: 6px;
}
.guide-sheet-name i { opacity: 0.7; }
.guide-sheet-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* FAQ */
.guide-faq { display: flex; flex-direction: column; gap: 16px; }
.faq-item {
  padding: 14px 16px;
  background: rgba(255,255,255,0.02);
  border: 1px solid var(--card-border);
  border-radius: var(--border-radius-sm);
}
.faq-q {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 6px;
}
.faq-a {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.65;
}

/* ==========================================================================
   Collapsible Guide Sections
   ========================================================================== */
.guide-section {
  margin-bottom: 16px;
}
.guide-section summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 18px 24px;
  user-select: none;
}
.guide-section summary::-webkit-details-marker { display: none; }
.guide-section summary .card-title {
  margin: 0;
  font-size: 1rem;
  display: flex;
  align-items: center;
  gap: 6px;
}
.guide-section summary .card-subtitle {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 3px;
}
.guide-chevron {
  font-size: 0.85rem;
  color: var(--text-muted);
  transition: transform 0.25s ease;
  flex-shrink: 0;
}
.guide-section[open] .guide-chevron {
  transform: rotate(180deg);
}
.guide-section summary:hover {
  background: rgba(99,102,241,0.05);
  border-radius: var(--border-radius-md) var(--border-radius-md) 0 0;
}
.guide-section .card-body {
  border-top: 1px solid var(--card-border);
}