/* ==========================================================================
   RiddleCraft Pro - Ultra-Optimized Design System & Stylesheet
   Zero external dependencies. Blazing fast, responsive, and accessible.
   ========================================================================== */

:root {
  --primary: #6366f1;
  --primary-hover: #4f46e5;
  --primary-light: #e0e7ff;
  --primary-dark: #3730a3;
  --accent: #f59e0b;
  --accent-light: #fef3c7;
  --accent-hover: #d97706;
  --success: #10b981;
  --success-light: #d1fae5;
  --danger: #ef4444;
  --danger-light: #fee2e2;

  --bg-page: #0f172a;
  --bg-surface: #1e293b;
  --bg-card: #1e293b;
  --bg-card-hover: #273549;
  --bg-input: #0f172a;
  --border-color: #334155;
  --border-focus: #818cf8;

  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-sub: #cbd5e1;

  --badge-easy: #059669;
  --badge-easy-bg: rgba(5, 150, 105, 0.15);
  --badge-med: #d97706;
  --badge-med-bg: rgba(217, 119, 6, 0.15);
  --badge-hard: #dc2626;
  --badge-hard-bg: rgba(220, 38, 38, 0.15);

  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.2), 0 4px 6px -2px rgba(0, 0, 0, 0.1);
  --shadow-glow: 0 0 25px rgba(99, 102, 241, 0.25);

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;

  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="light"] {
  --bg-page: #f8fafc;
  --bg-surface: #ffffff;
  --bg-card: #ffffff;
  --bg-card-hover: #f1f5f9;
  --bg-input: #f8fafc;
  --border-color: #e2e8f0;
  --border-focus: #6366f1;

  --text-main: #0f172a;
  --text-muted: #64748b;
  --text-sub: #334155;

  --badge-easy-bg: #ecfdf5;
  --badge-med-bg: #fffbeb;
  --badge-hard-bg: #fef2f2;

  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.06);
  --shadow-lg: 0 12px 24px rgba(0,0,0,0.08);
  --shadow-glow: 0 0 20px rgba(99, 102, 241, 0.15);
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-page);
  color: var(--text-main);
  line-height: 1.6;
  min-height: 100vh;
  transition: background-color 0.3s ease, color 0.3s ease;
  overflow-x: hidden;
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background-color: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  transition: var(--transition);
}

[data-theme="light"] .site-header {
  background-color: rgba(255, 255, 255, 0.88);
}

.header-container {
  max-width: 1320px;
  margin: 0 auto;
  padding: 0.85rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--text-main);
}

.brand-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, #6366f1, #a855f7);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.35rem;
  box-shadow: 0 4px 10px rgba(99, 102, 241, 0.35);
}

.brand-name {
  font-size: 1.3rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, #818cf8, #c084fc);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

[data-theme="light"] .brand-name {
  background: linear-gradient(135deg, #4f46e5, #7e22ce);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.brand-tagline {
  display: none;
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 500;
}

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

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

.btn-icon {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  padding: 0.55rem 0.85rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.88rem;
  font-weight: 600;
  transition: var(--transition);
}

.btn-icon:hover {
  background: var(--bg-card-hover);
  border-color: var(--primary);
  transform: translateY(-1px);
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), #8b5cf6);
  color: #ffffff;
  border: none;
  padding: 0.55rem 1.1rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.88rem;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.25);
  transition: var(--transition);
}

.btn-primary:hover {
  filter: brightness(1.1);
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(99, 102, 241, 0.35);
}

/* ==========================================================================
   Hero Section
   ========================================================================== */

.hero-section {
  position: relative;
  padding: 3.5rem 1.5rem 2.5rem;
  text-align: center;
  max-width: 900px;
  margin: 0 auto;
}

.hero-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(99, 102, 241, 0.12);
  border: 1px solid rgba(99, 102, 241, 0.25);
  color: #a5b4fc;
  padding: 0.35rem 0.95rem;
  border-radius: var(--radius-full);
  font-size: 0.82rem;
  font-weight: 600;
  margin-bottom: 1.25rem;
}

[data-theme="light"] .hero-pill {
  color: var(--primary);
  background: #eef2ff;
  border-color: #c7d2fe;
}

.hero-title {
  font-size: clamp(2rem, 5vw, 3.25rem);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 1rem;
}

.gradient-text {
  background: linear-gradient(135deg, #818cf8 0%, #c084fc 50%, #f472b6 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

[data-theme="light"] .gradient-text {
  background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 50%, #db2777 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: clamp(1rem, 2.5vw, 1.2rem);
  color: var(--text-muted);
  max-width: 720px;
  margin: 0 auto 1.8rem;
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  flex-wrap: wrap;
  margin-top: 1rem;
}

.stat-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.88rem;
  color: var(--text-sub);
  background: var(--bg-surface);
  padding: 0.4rem 0.9rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-color);
}

.stat-item strong {
  color: var(--primary);
}

/* ==========================================================================
   Riddle of the Day Banner
   ========================================================================== */

.daily-banner {
  max-width: 1200px;
  margin: 0 auto 2.5rem;
  padding: 0 1.5rem;
}

.daily-card {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.15), rgba(168, 85, 247, 0.12));
  border: 1px solid rgba(99, 102, 241, 0.35);
  border-radius: var(--radius-lg);
  padding: 1.75rem 2rem;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-glow);
}

[data-theme="light"] .daily-card {
  background: linear-gradient(135deg, #f5f3ff, #faf5ff);
  border-color: #ddd6fe;
}

.daily-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.daily-badge {
  background: linear-gradient(135deg, #f59e0b, #ea580c);
  color: #fff;
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.3rem 0.75rem;
  border-radius: var(--radius-full);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.daily-question {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 1.25rem;
  line-height: 1.45;
}

.daily-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

/* ==========================================================================
   Filter & Search Toolbar
   ========================================================================== */

.toolbar-section {
  max-width: 1200px;
  margin: 0 auto 2rem;
  padding: 0 1.5rem;
}

.search-box {
  position: relative;
  margin-bottom: 1.25rem;
}

.search-input {
  width: 100%;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  font-size: 1rem;
  padding: 0.95rem 1.25rem 0.95rem 3.1rem;
  border-radius: var(--radius-md);
  outline: none;
  transition: var(--transition);
}

.search-input:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

.search-icon {
  position: absolute;
  left: 1.1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
  font-size: 1.1rem;
}

.search-shortcut {
  position: absolute;
  right: 1.1rem;
  top: 50%;
  transform: translateY(-50%);
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  font-size: 0.75rem;
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-sm);
  pointer-events: none;
}

/* Audience Tabs */
.audience-tabs {
  display: flex;
  gap: 0.5rem;
  overflow-x: auto;
  padding-bottom: 0.5rem;
  margin-bottom: 1rem;
  scrollbar-width: thin;
}

.tab-btn {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  padding: 0.6rem 1.15rem;
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: var(--transition);
}

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

.tab-btn.active {
  background: var(--primary);
  color: #ffffff;
  border-color: var(--primary);
  box-shadow: 0 4px 10px rgba(99, 102, 241, 0.3);
}

/* Secondary Filters (Category, Difficulty, Sort) */
.filter-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.category-chips {
  display: flex;
  gap: 0.45rem;
  flex-wrap: wrap;
}

.chip-btn {
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-full);
  font-size: 0.82rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
}

.chip-btn:hover {
  color: var(--text-main);
  border-color: var(--primary);
  background: rgba(99, 102, 241, 0.08);
}

.chip-btn.active {
  background: rgba(99, 102, 241, 0.18);
  color: var(--primary);
  border-color: var(--primary);
  font-weight: 600;
}

.filter-selects {
  display: flex;
  gap: 0.6rem;
  align-items: center;
}

.select-control {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  padding: 0.45rem 0.85rem;
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  font-weight: 500;
  outline: none;
  cursor: pointer;
  transition: var(--transition);
}

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

/* ==========================================================================
   Riddle Grid & Cards
   ========================================================================== */

.main-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem 4rem;
}

.results-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.riddles-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media (min-width: 640px) {
  .riddles-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .riddles-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* Card Styling */
.riddle-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: var(--transition);
  position: relative;
  box-shadow: var(--shadow-sm);
}

.riddle-card:hover {
  border-color: var(--border-focus);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.9rem;
  gap: 0.5rem;
}

.card-badges {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
  align-items: center;
}

.badge {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 0.2rem 0.55rem;
  border-radius: var(--radius-full);
}

.badge-easy {
  color: var(--badge-easy);
  background: var(--badge-easy-bg);
}

.badge-medium {
  color: var(--badge-med);
  background: var(--badge-med-bg);
}

.badge-hard {
  color: var(--badge-hard);
  background: var(--badge-hard-bg);
}

.badge-category {
  color: var(--text-muted);
  background: rgba(148, 163, 184, 0.12);
}

.card-quick-actions {
  display: flex;
  gap: 0.25rem;
}

.icon-btn-ghost {
  background: transparent;
  border: none;
  color: var(--text-muted);
  padding: 0.35rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  transition: var(--transition);
}

.icon-btn-ghost:hover {
  color: var(--text-main);
  background: rgba(255, 255, 255, 0.06);
}

.icon-btn-ghost.active {
  color: #f43f5e;
}

/* Card Body */
.card-question {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-main);
  line-height: 1.5;
  margin-bottom: 1.25rem;
  flex-grow: 1;
}

/* Hint Box */
.hint-container {
  display: none;
  background: rgba(245, 158, 11, 0.1);
  border-left: 3px solid var(--accent);
  padding: 0.65rem 0.85rem;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: 0.85rem;
  color: var(--text-sub);
  margin-bottom: 1rem;
  animation: fadeIn 0.2s ease-in-out;
}

.hint-container.visible {
  display: block;
}

/* Answer Box (Masked by default) */
.answer-box {
  background: var(--bg-input);
  border: 1px dashed var(--border-color);
  border-radius: var(--radius-sm);
  padding: 0.9rem;
  text-align: center;
  margin-top: auto;
  position: relative;
  overflow: hidden;
  transition: var(--transition);
}

.answer-box.revealed {
  border-style: solid;
  border-color: var(--success);
  background: rgba(16, 185, 129, 0.08);
}

.answer-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--primary);
  cursor: pointer;
  user-select: none;
  padding: 0.2rem;
}

.answer-placeholder:hover {
  color: var(--primary-hover);
}

.answer-text {
  display: none;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-main);
  animation: popIn 0.25s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.answer-box.revealed .answer-placeholder {
  display: none;
}

.answer-box.revealed .answer-text {
  display: block;
}

.card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 1rem;
  padding-top: 0.75rem;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  font-size: 0.78rem;
  color: var(--text-muted);
}

[data-theme="light"] .card-footer {
  border-top-color: #f1f5f9;
}

.hint-toggle-btn {
  background: transparent;
  border: none;
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.25rem 0.45rem;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.hint-toggle-btn:hover {
  background: rgba(245, 158, 11, 0.1);
}

/* ==========================================================================
   Presentation / Classroom Mode Modal (Full Screen)
   ========================================================================== */

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.88);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  z-index: 100;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  animation: fadeIn 0.25s ease-out;
}

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

.presenter-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 820px;
  padding: 3rem 2.5rem;
  text-align: center;
  position: relative;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
}

.presenter-close {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 0.5rem;
  line-height: 1;
}

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

.presenter-meta {
  display: flex;
  justify-content: center;
  gap: 0.75rem;
  margin-bottom: 2rem;
}

.presenter-q {
  font-size: clamp(1.4rem, 3.5vw, 2.2rem);
  font-weight: 800;
  color: var(--text-main);
  line-height: 1.4;
  margin-bottom: 2.5rem;
  min-height: 120px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.presenter-ans {
  background: rgba(16, 185, 129, 0.1);
  border: 2px dashed var(--success);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--success);
  margin-bottom: 2.5rem;
  cursor: pointer;
  transition: var(--transition);
}

.presenter-ans.hidden-ans {
  border-color: var(--border-color);
  background: var(--bg-input);
  color: var(--text-muted);
}

.presenter-controls {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 1.25rem;
}

.nav-arrow {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  width: 48px;
  height: 48px;
  border-radius: 50%;
  font-size: 1.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition);
}

.nav-arrow:hover {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
  transform: scale(1.05);
}

.key-hint {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: 1.5rem;
}

/* ==========================================================================
   Quiz / Interactive Challenge Mode Modal
   ========================================================================== */

.quiz-modal {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 650px;
  padding: 2.5rem;
  position: relative;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
}

.quiz-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
}

.quiz-score-badge {
  background: rgba(99, 102, 241, 0.15);
  color: var(--primary);
  border: 1px solid rgba(99, 102, 241, 0.3);
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-full);
  font-weight: 700;
  font-size: 0.88rem;
}

.quiz-question-box {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 1.5rem;
  border-radius: var(--radius-md);
  margin-bottom: 1.5rem;
  font-size: 1.15rem;
  font-weight: 600;
  line-height: 1.5;
}

.quiz-input-group {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
}

.quiz-input {
  flex-grow: 1;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  padding: 0.85rem 1.1rem;
  border-radius: var(--radius-sm);
  font-size: 1rem;
  outline: none;
}

.quiz-input:focus {
  border-color: var(--primary);
}

.quiz-feedback {
  padding: 1rem;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 1.25rem;
  display: none;
}

.quiz-feedback.success {
  display: block;
  background: rgba(16, 185, 129, 0.15);
  color: var(--success);
  border: 1px solid var(--success);
}

.quiz-feedback.error {
  display: block;
  background: rgba(239, 68, 68, 0.15);
  color: var(--danger);
  border: 1px solid var(--danger);
}

/* ==========================================================================
   Comparison & Reverse-Engineering Inspector Modal
   ========================================================================== */

.inspector-modal {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 960px;
  max-height: 85vh;
  overflow-y: auto;
  padding: 2.5rem;
  position: relative;
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  font-size: 0.88rem;
}

.comparison-table th, .comparison-table td {
  padding: 0.85rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

.comparison-table th {
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-muted);
  font-weight: 600;
}

[data-theme="light"] .comparison-table th {
  background: #f1f5f9;
}

.table-highlight {
  background: rgba(99, 102, 241, 0.12);
  color: var(--primary);
  font-weight: 700;
}

/* ==========================================================================
   Footer
   ========================================================================== */

.site-footer {
  border-top: 1px solid var(--border-color);
  background: var(--bg-surface);
  padding: 3rem 1.5rem;
  font-size: 0.88rem;
  color: var(--text-muted);
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.footer-links {
  display: flex;
  gap: 1.25rem;
  flex-wrap: wrap;
}

.footer-link {
  color: var(--text-muted);
  text-decoration: none;
  transition: var(--transition);
}

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

/* ==========================================================================
   Animations & Toast
   ========================================================================== */

@keyframes fadeIn {
  from { opacity: 0; transform: scale(0.98); }
  to { opacity: 1; transform: scale(1); }
}

@keyframes popIn {
  0% { transform: scale(0.9); opacity: 0; }
  100% { transform: scale(1); opacity: 1; }
}

.toast {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background: var(--bg-surface);
  color: var(--text-main);
  border: 1px solid var(--border-color);
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  font-size: 0.9rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  z-index: 200;
  transform: translateY(100px);
  opacity: 0;
  transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.toast.show {
  transform: translateY(0);
  opacity: 1;
}