@import url('../fonts/fonts.css');
@import url('./reset.css');
@import url('./variables.css');

/* ==========================================================================
   Base & Typography
   ========================================================================== */
body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  transition: background-color var(--transition-base), color var(--transition-base);
  overflow-x: hidden;
}

/* Accessibility Focus Ring (WCAG 2.2 compliant) */
:focus-visible {
  outline: var(--focus-ring);
  outline-offset: var(--focus-offset);
}

/* Screen reader only utility */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */
.header {
  position: sticky;
  top: 0;
  z-index: 40;
  background-color: var(--bg-surface-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-subtle);
  padding: var(--spacing-sm) var(--spacing-md);
  transition: background-color var(--transition-base), border-color var(--transition-base);
}

.header-container {
  max-width: 880px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-md);
}

.brand-link {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  text-decoration: none;
  color: var(--text-primary);
  border-radius: var(--radius-sm);
  padding: var(--spacing-xs) var(--spacing-sm);
  transition: opacity var(--transition-fast);
}

.brand-link:hover {
  opacity: 0.9;
}

.brand-logo {
  width: 32px;
  height: 32px;
  flex-shrink: 0;
}

.brand-text {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.025em;
  background: var(--accent-gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.brand-badge {
  font-size: 0.7rem;
  font-weight: 600;
  padding: 2px 6px;
  border-radius: var(--radius-full);
  background: var(--border-subtle);
  color: var(--text-secondary);
  border: 1px solid var(--border-subtle);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}

.btn-icon-link, .btn-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-height: 40px;
  min-width: 40px;
  padding: 8px 14px;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-default);
  transition: all var(--transition-fast);
  text-decoration: none;
  user-select: none;
}

.btn-icon-link:hover, .btn-action:hover {
  color: var(--text-primary);
  background-color: var(--bg-hover);
  border-color: var(--border-focus);
  transform: translateY(-1px);
}

.btn-icon-link:active, .btn-action:active {
  transform: translateY(0);
}

.btn-star {
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.1) 0%, rgba(234, 179, 8, 0.05) 100%);
  border-color: rgba(245, 158, 11, 0.3);
  color: #f59e0b;
}

.btn-star:hover {
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.2) 0%, rgba(234, 179, 8, 0.1) 100%);
  border-color: #f59e0b;
  color: #d97706;
}

[data-theme="dark"] .btn-star {
  color: #fbbf24;
}

[data-theme="dark"] .btn-star:hover {
  color: #fde047;
}

.btn-about {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.12) 0%, rgba(59, 130, 246, 0.08) 100%);
  border-color: rgba(99, 102, 241, 0.3);
  color: var(--text-primary);
}

.btn-about:hover {
  border-color: var(--accent-secondary);
  box-shadow: 0 0 12px var(--accent-glow);
}

.icon,
.stat-icon,
.toast-icon,
.insights-toggle-icon,
.modal-close-btn img {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  display: inline-block;
  vertical-align: middle;
  transition: filter var(--transition-fast), transform var(--transition-fast);
}

/* Light Theme Icon Filters */
[data-theme="light"] .icon,
[data-theme="light"] .modal-close-btn img {
  filter: brightness(0) saturate(100%) invert(35%) sepia(8%) saturate(1200%) hue-rotate(180deg) brightness(95%) contrast(90%);
}

[data-theme="light"] .stat-icon,
[data-theme="light"] .insights-toggle-icon {
  filter: brightness(0) saturate(100%) invert(50%) sepia(8%) saturate(600%) hue-rotate(180deg) brightness(90%) contrast(90%);
}

/* Dark Theme Icon Filters */
[data-theme="dark"] .icon,
[data-theme="dark"] .modal-close-btn img {
  filter: brightness(0) saturate(100%) invert(75%) sepia(10%) saturate(300%) hue-rotate(180deg) brightness(98%) contrast(95%);
}

[data-theme="dark"] .stat-icon,
[data-theme="dark"] .insights-toggle-icon {
  filter: brightness(0) saturate(100%) invert(55%) sepia(10%) saturate(300%) hue-rotate(180deg) brightness(90%) contrast(90%);
}

/* Hover effects */
.btn-icon-link:hover .icon,
.btn-action:hover .icon,
.tool-btn:hover .icon,
.modal-close-btn:hover img {
  filter: brightness(0) saturate(100%) invert(98%) sepia(0%) saturate(0%) brightness(105%) contrast(105%);
}

[data-theme="light"] .btn-icon-link:hover .icon,
[data-theme="light"] .btn-action:hover .icon,
[data-theme="light"] .tool-btn:hover .icon,
[data-theme="light"] .modal-close-btn:hover img {
  filter: brightness(0) saturate(100%) invert(10%) sepia(10%) saturate(500%) hue-rotate(180deg) brightness(95%) contrast(95%);
}

/* Brand Logo (Vibrant Accent Gradient Tint) */
.brand-logo {
  filter: brightness(0) saturate(100%) invert(45%) sepia(90%) saturate(3000%) hue-rotate(215deg) brightness(100%) contrast(105%);
}

/* GitHub Star Button Icon (Gold/Amber) */
.btn-star .icon,
.modal-btn-primary .icon {
  filter: brightness(0) saturate(100%) invert(75%) sepia(60%) saturate(2000%) hue-rotate(355deg) brightness(102%) contrast(105%) !important;
}

/* Toast Success Checkmark (Emerald Green) */
.toast-icon {
  filter: brightness(0) saturate(100%) invert(60%) sepia(85%) saturate(1500%) hue-rotate(115deg) brightness(95%) contrast(95%) !important;
}

/* Tool Danger Clear Button Hover (Red) */
.tool-btn-danger:hover .icon {
  filter: brightness(0) saturate(100%) invert(40%) sepia(90%) saturate(3000%) hue-rotate(345deg) brightness(95%) contrast(95%) !important;
}

/* ==========================================================================
   Main Layout & Container
   ========================================================================== */
.main-wrapper {
  flex: 1;
  max-width: 880px;
  width: 100%;
  margin: 0 auto;
  padding: var(--spacing-lg) var(--spacing-md);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

/* Intro Title & Tagline (SEO & UX) */
.hero-header-intro {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 0 var(--spacing-xs);
}

.page-title {
  font-size: clamp(1.35rem, 3vw, 1.85rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--text-primary);
  line-height: 1.25;
}

.page-subtitle {
  font-size: 0.925rem;
  color: var(--text-secondary);
  max-width: 580px;
  line-height: 1.5;
}

/* ==========================================================================
   Hero & Metrics Overview Grid
   ========================================================================== */
.metrics-section {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.hero-stat-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-shadow: var(--shadow-md);
  position: relative;
  overflow: hidden;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.hero-stat-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at top right, var(--accent-glow), transparent 70%);
  pointer-events: none;
}

.hero-stat-content {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.hero-stat-label {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.hero-stat-number {
  font-size: clamp(2.5rem, 5vw, 3.75rem);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.03em;
  background: var(--accent-gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  font-feature-settings: 'tnum';
  font-variant-numeric: tabular-nums;
}

.hero-stat-meta {
  display: flex;
  gap: var(--spacing-md);
  align-items: center;
}

.meta-pill {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  background: var(--bg-tertiary);
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
}

.meta-pill-label {
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.meta-pill-val {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  font-variant-numeric: tabular-nums;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--spacing-sm);
}

.stat-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  display: flex;
  flex-direction: column;
  gap: 4px;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.stat-card:hover {
  transform: translateY(-2px);
  border-color: var(--border-default);
}

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

.stat-label {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.stat-icon {
  width: 16px;
  height: 16px;
  color: var(--text-tertiary);
}

.stat-value {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  font-variant-numeric: tabular-nums;
}

/* ==========================================================================
   Editor Workspace & Toolbar
   ========================================================================== */
.editor-section {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  background: var(--bg-secondary);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  padding: var(--spacing-md);
  box-shadow: var(--shadow-md);
}

.editor-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  padding-bottom: var(--spacing-xs);
}

.target-limit-bar {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}

.target-select-label {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.target-select {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-default);
  color: var(--text-primary);
  border-radius: var(--radius-sm);
  padding: 6px 12px;
  font-size: 0.85rem;
  cursor: pointer;
  outline: none;
  transition: border-color var(--transition-fast);
}

.target-select:focus-visible {
  border-color: var(--border-focus);
}

.custom-limit-input {
  width: 80px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-default);
  color: var(--text-primary);
  border-radius: var(--radius-sm);
  padding: 6px 8px;
  font-size: 0.85rem;
  text-align: center;
}

/* Progress bar for character limits */
.progress-container {
  width: 100%;
  height: 6px;
  background-color: var(--bg-tertiary);
  border-radius: var(--radius-full);
  overflow: hidden;
  margin: 4px 0 8px 0;
  display: none; /* activated when limit > 0 */
}

.progress-container.active {
  display: block;
}

.progress-bar {
  height: 100%;
  width: 0%;
  background: var(--accent-primary);
  border-radius: var(--radius-full);
  transition: width var(--transition-fast), background-color var(--transition-fast);
}

.progress-bar.warning {
  background: var(--warning);
}

.progress-bar.danger {
  background: var(--danger);
}

.limit-feedback {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-secondary);
  display: none;
}

.limit-feedback.active {
  display: inline-block;
}

.limit-feedback.over-limit {
  color: var(--danger);
  font-weight: 600;
}

/* Textarea styling */
.textarea-wrapper {
  position: relative;
  width: 100%;
}

.main-textarea {
  width: 100%;
  min-height: 280px;
  max-height: 70vh;
  resize: vertical;
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 1.05rem;
  line-height: 1.65;
  outline: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.main-textarea:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.main-textarea::placeholder {
  color: var(--text-tertiary);
}

/* Action Toolbar */
.toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  padding-top: var(--spacing-xs);
  border-top: 1px solid var(--border-subtle);
}

.toolbar-group {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}

.tool-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  background: var(--bg-tertiary);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  font-size: 0.825rem;
  font-weight: 500;
  transition: all var(--transition-fast);
  user-select: none;
}

.tool-btn:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
  border-color: var(--border-default);
}

.tool-btn-danger:hover {
  background: var(--danger-bg);
  border-color: var(--danger);
  color: var(--danger);
}

/* ==========================================================================
   Keyword Density & Insights Accordion
   ========================================================================== */
.insights-section {
  background: var(--bg-secondary);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  padding: var(--spacing-md);
  box-shadow: var(--shadow-sm);
}

.insights-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  user-select: none;
}

.insights-title {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
}

.insights-toggle-icon {
  width: 20px;
  height: 20px;
  transition: transform var(--transition-fast);
}

.insights-content {
  margin-top: var(--spacing-md);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.insights-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-md);
}

.density-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
  max-height: 240px;
  overflow-y: auto;
  padding-right: 4px;
}

.density-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  background: var(--bg-tertiary);
  font-size: 0.85rem;
}

.density-word {
  font-weight: 600;
  color: var(--text-primary);
}

.density-stats {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  color: var(--text-secondary);
  font-size: 0.8rem;
}

.density-bar-bg {
  width: 60px;
  height: 6px;
  background: var(--border-subtle);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.density-bar-fill {
  height: 100%;
  background: var(--accent-primary);
  border-radius: var(--radius-full);
}

/* ==========================================================================
   About Creator Modal Dialog
   ========================================================================== */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-md);
  z-index: 100;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-base), visibility var(--transition-base);
}

.modal-backdrop.open {
  opacity: 1;
  visibility: visible;
}

.modal-dialog {
  background: var(--bg-secondary);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-xl);
  max-width: 540px;
  width: 100%;
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-xl);
  position: relative;
  transform: scale(0.95) translateY(10px);
  transition: transform var(--transition-base);
  max-height: 90vh;
  overflow-y: auto;
}

.modal-backdrop.open .modal-dialog {
  transform: scale(1) translateY(0);
}

.modal-close-btn {
  position: absolute;
  top: var(--spacing-md);
  right: var(--spacing-md);
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-tertiary);
  background: var(--bg-tertiary);
  border: 1px solid var(--border-subtle);
  transition: all var(--transition-fast);
}

.modal-close-btn:hover {
  color: var(--text-primary);
  background: var(--bg-hover);
}

.creator-header {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-lg);
}

.creator-avatar {
  width: 72px;
  height: 72px;
  border-radius: var(--radius-full);
  background: var(--accent-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  font-size: 2rem;
  font-weight: 700;
  box-shadow: 0 0 20px var(--accent-glow);
}

.creator-name {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.creator-subtitle {
  font-size: 0.95rem;
  color: var(--accent-primary);
  font-weight: 600;
}

.creator-bio {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
  text-align: center;
  margin-bottom: var(--spacing-lg);
}

.skills-title {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-tertiary);
  margin-bottom: var(--spacing-sm);
}

.skills-container {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: var(--spacing-xl);
}

.skill-pill {
  padding: 4px 12px;
  border-radius: var(--radius-full);
  background: var(--bg-tertiary);
  border: 1px solid var(--border-subtle);
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.modal-actions {
  display: flex;
  gap: var(--spacing-sm);
  justify-content: center;
  flex-wrap: wrap;
}

.modal-btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius-md);
  background: var(--accent-gradient);
  color: #ffffff;
  font-weight: 600;
  font-size: 0.9rem;
  box-shadow: 0 4px 12px var(--accent-glow);
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.modal-btn-primary:hover {
  transform: translateY(-1px);
  opacity: 0.95;
}

.modal-btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: var(--radius-md);
  background: var(--bg-tertiary);
  border: 1px solid var(--border-default);
  color: var(--text-primary);
  font-weight: 600;
  font-size: 0.9rem;
  transition: background var(--transition-fast);
}

.modal-btn-secondary:hover {
  background: var(--bg-hover);
}

/* ==========================================================================
   Toast Notification (WCAG aria-live compliant)
   ========================================================================== */
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 999;
  display: flex;
  flex-direction: column;
  gap: 8px;
  pointer-events: none;
}

.toast {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 18px;
  border-radius: var(--radius-md);
  background: var(--bg-secondary);
  border: 1px solid var(--border-default);
  color: var(--text-primary);
  box-shadow: var(--shadow-xl);
  font-size: 0.875rem;
  font-weight: 500;
  pointer-events: auto;
  animation: toast-in 0.25s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes toast-in {
  from {
    opacity: 0;
    transform: translateY(12px) scale(0.96);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.toast-icon {
  width: 18px;
  height: 18px;
  color: var(--success);
}

/* ==========================================================================
   Social Media Limits Guide (SEO & Quick Reference)
   ========================================================================== */
.limits-guide-section {
  background: var(--bg-secondary);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  padding: var(--spacing-md) var(--spacing-lg);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.section-heading-sm {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.limits-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: var(--spacing-sm);
}

.limit-badge-card {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 8px 10px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  text-align: center;
}

.limit-badge-name {
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.limit-badge-num {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
}

/* ==========================================================================
   SEO FAQ Section (Accordion)
   ========================================================================== */
.seo-faq-section {
  background: var(--bg-secondary);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  padding: var(--spacing-md) var(--spacing-lg);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.faq-item {
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 4px;
}

.faq-item:last-child {
  border-bottom: none;
}

.faq-question {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
  cursor: pointer;
  padding: 8px 0;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq-question::-webkit-details-marker {
  display: none;
}

.faq-question::after {
  content: '+';
  font-size: 1.15rem;
  color: var(--text-tertiary);
  font-weight: 400;
  line-height: 1;
}

details[open] .faq-question::after {
  content: '−';
  color: var(--accent-primary);
}

.faq-answer {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.6;
  padding: 2px 0 10px 0;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.footer {
  border-top: 1px solid var(--border-subtle);
  padding: var(--spacing-lg) var(--spacing-md);
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-tertiary);
  margin-top: auto;
}

.footer-content {
  max-width: 880px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.footer-links {
  display: flex;
  gap: var(--spacing-md);
  align-items: center;
  flex-wrap: wrap;
  justify-content: center;
}

.footer-link {
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}

.footer-link:hover {
  color: var(--accent-primary);
}

/* ==========================================================================
   Responsive Breakpoints (Mobile, Tablet, Desktop)
   ========================================================================== */
@media (max-width: 768px) {
  .hero-stat-card {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-md);
  }

  .hero-stat-meta {
    width: 100%;
    justify-content: space-between;
  }

  .meta-pill {
    align-items: flex-start;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .toolbar {
    flex-direction: column;
    align-items: stretch;
  }

  .toolbar-group {
    justify-content: stretch;
  }

  .tool-btn {
    flex: 1;
    justify-content: center;
  }

  .toast-container {
    left: 16px;
    right: 16px;
    bottom: 16px;
  }
}

@media (max-width: 480px) {
  .stats-grid {
    grid-template-columns: 1fr;
  }

  .header-container {
    gap: var(--spacing-xs);
  }

  .brand-text {
    font-size: 1.1rem;
  }

  .btn-icon-link span, .btn-action span {
    display: none;
  }

  .btn-icon-link, .btn-action {
    padding: 8px;
    min-width: 38px;
    min-height: 38px;
  }
}