/* ================================================================
   CrowdSense AI – Design System
   Premium dark-mode-first design with glassmorphism & modern aesthetics
   ================================================================ */

/* ── Google Fonts ─────────────────────────────────────────────────── */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=JetBrains+Mono:wght@400;500&display=swap');

/* ── CSS Variables (Theme Tokens) ────────────────────────────────── */
:root {
  /* Dark theme (default) */
  --bg-primary: #0a0e1a;
  --bg-secondary: #111827;
  --bg-card: rgba(17, 24, 39, 0.8);
  --bg-card-hover: rgba(30, 41, 59, 0.9);
  --bg-glass: rgba(15, 23, 42, 0.6);
  --bg-input: rgba(30, 41, 59, 0.7);
  --bg-dropdown: #1e293b;
  --border-subtle: rgba(148, 163, 184, 0.12);
  --border-glow: rgba(99, 102, 241, 0.4);

  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --text-inverse: #0f172a;

  --accent-1: #6366f1;     /* Indigo */
  --accent-1-glow: rgba(99, 102, 241, 0.25);
  --accent-2: #06b6d4;     /* Cyan */
  --accent-2-glow: rgba(6, 182, 212, 0.2);
  --accent-3: #f59e0b;     /* Amber */
  --accent-4: #10b981;     /* Emerald */
  --accent-5: #ef4444;     /* Red */
  --accent-6: #8b5cf6;     /* Violet */

  --gradient-hero: linear-gradient(135deg, #6366f1 0%, #06b6d4 50%, #8b5cf6 100%);
  --gradient-card: linear-gradient(145deg, rgba(99, 102, 241, 0.08), rgba(6, 182, 212, 0.04));
  --gradient-glow: radial-gradient(ellipse at 50% 0%, rgba(99, 102, 241, 0.15), transparent 60%);
  --gradient-danger: linear-gradient(135deg, #ef4444, #dc2626);

  --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.4);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.5);
  --shadow-glow: 0 0 30px rgba(99, 102, 241, 0.15);

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-med: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);

  --density-low: #10b981;
  --density-med: #f59e0b;
  --density-high: #ef4444;
}

/* ── Light Theme ─────────────────────────────────────────────────── */
[data-theme="light"] {
  --bg-primary: #f8fafc;
  --bg-secondary: #ffffff;
  --bg-card: rgba(255, 255, 255, 0.9);
  --bg-card-hover: rgba(241, 245, 249, 0.95);
  --bg-glass: rgba(255, 255, 255, 0.7);
  --bg-input: rgba(241, 245, 249, 0.9);
  --bg-dropdown: #ffffff;
  --border-subtle: rgba(100, 116, 139, 0.2);
  --border-glow: rgba(99, 102, 241, 0.3);

  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  --text-inverse: #f1f5f9;

  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.1);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.12);
  --shadow-glow: 0 0 30px rgba(99, 102, 241, 0.08);

  --gradient-card: linear-gradient(145deg, rgba(99, 102, 241, 0.05), rgba(6, 182, 212, 0.03));
}

/* ── Reset & Base ────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: var(--font-sans);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  background: var(--gradient-glow);
  pointer-events: none;
  z-index: 0;
}

a { color: var(--accent-2); text-decoration: none; transition: color var(--transition-fast); }
a:hover { color: var(--accent-1); }

/* ── Layout ──────────────────────────────────────────────────────── */
.app-container {
  position: relative;
  z-index: 1;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 20px;
  padding-bottom: 60px;
}

.section {
  display: none;
  animation: sectionFade 0.4s ease;
}

.section.active {
  display: block;
}

.section-header {
  margin: 40px 0 30px;
}

@keyframes sectionFade {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ── Header ──────────────────────────────────────────────────────── */
.app-header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(20px) saturate(1.4);
  -webkit-backdrop-filter: blur(20px) saturate(1.4);
  background: var(--bg-glass);
  border-bottom: 1px solid var(--border-subtle);
  padding: 12px 0;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 16px;
  gap: 8px;
}

@media (max-width: 768px) {
  .app-header {
    padding: 8px 0;
  }
  .header-inner {
    flex-wrap: nowrap; /* Force one row */
    justify-content: space-between;
    padding: 0 12px;
    height: 44px;
    gap: 0;
  }
  .logo {
    flex: 1;
    display: flex;
    align-items: center;
    min-width: 0;
  }
  .logo-icon {
    width: 28px;
    height: 28px;
    font-size: 0.9rem;
  }
  .logo span.app-title-text {
    display: inline-block !important;
    font-size: 0.82rem;
    font-weight: 700;
    margin-left: 6px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    letter-spacing: -0.01em;
  }
  .header-controls {
    display: flex;
    align-items: center;
    gap: 4px;
  }
  .btn-icon {
    width: 32px;
    height: 32px;
    font-size: 0.9rem;
  }
  .btn-sm {
    padding: 4px 10px;
    font-size: 0.7rem;
  }
}

.logo-icon {
  width: 36px;
  height: 36px;
  background: var(--gradient-hero);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  color: white;
  box-shadow: 0 0 20px rgba(99, 102, 241, 0.3);
}

.header-controls {
  display: flex;
  align-items: center;
  gap: 8px;
}

/* ── Nav Tabs ────────────────────────────────────────────────────── */
.nav-tabs {
  position: fixed;
  top: 12px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1000;
  display: flex;
  gap: 2px;
  padding: 4px;
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-subtle);
  overflow-x: auto;
  scrollbar-width: thin;
  flex-wrap: nowrap;
  max-width: 90%;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-med);
}

.nav-tab {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: var(--radius-md);
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
  border: none;
  background: transparent;
  font-family: var(--font-sans);
  flex-shrink: 0;
}

.nav-tab:hover {
  color: var(--text-primary);
  background: var(--bg-card-hover);
}

.nav-tab.active {
  background: var(--accent-1);
  color: white;
  box-shadow: 0 2px 12px var(--accent-1-glow);
}

.nav-tab .tab-icon { font-size: 1rem; }

/* ── Buttons ─────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  border-radius: var(--radius-md);
  font-size: 0.85rem;
  font-weight: 600;
  font-family: var(--font-sans);
  cursor: pointer;
  border: 1px solid var(--border-subtle);
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent-1);
  color: white;
  border-color: transparent;
  box-shadow: 0 2px 8px var(--accent-1-glow);
}
.btn-primary:hover {
  background: #5558e6;
  box-shadow: 0 4px 16px var(--accent-1-glow);
  transform: translateY(-1px);
}

.btn-secondary {
  background: var(--bg-card);
  color: var(--text-primary);
}
.btn-secondary:hover {
  background: var(--bg-card-hover);
  border-color: var(--accent-1);
}

.btn-danger {
  background: var(--gradient-danger);
  color: white;
  border-color: transparent;
}
.btn-danger:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(239, 68, 68, 0.3);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border-subtle);
}
.btn-ghost:hover {
  color: var(--text-primary);
  border-color: var(--accent-1);
  background: var(--accent-1-glow);
}

.btn-icon {
  width: 36px;
  height: 36px;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  font-size: 1.1rem;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}
.btn-icon:hover {
  color: var(--text-primary);
  border-color: var(--accent-1);
  background: var(--accent-1-glow);
}

/* ── Cards ───────────────────────────────────────────────────────── */
.card {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 24px;
  transition: all var(--transition-med);
}

.card:hover {
  border-color: var(--border-glow);
  box-shadow: var(--shadow-glow);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.card-title {
  font-size: 1rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 8px;
}

.card-title .icon { font-size: 1.2rem; }

/* ── Section ─────────────────────────────────────────────────────── */
.section { display: none; animation: fadeSlideIn 0.35s ease; }
.section.active { display: block; }

@keyframes fadeSlideIn {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

.section-header {
  margin: 24px 0 20px;
}

.section-title {
  font-size: 1.5rem;
  font-weight: 800;
  background: var(--gradient-hero);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.02em;
}

.section-subtitle {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-top: 4px;
}

/* ── Grid Layouts ────────────────────────────────────────────────── */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.grid-4 { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 16px; }

/* ── Heatmap ─────────────────────────────────────────────────────── */
.heatmap-container {
  position: relative;
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-subtle);
  overflow: hidden;
  aspect-ratio: 16/9;
  min-height: 400px;
}

.heatmap-canvas {
  width: 100%;
  height: 100%;
  display: block;
}

@media (max-width: 768px) {
  .heatmap-container {
    aspect-ratio: 4/3;
    min-height: 300px;
  }
}

.heatmap-legend {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  gap: 8px;
  padding: 8px 14px;
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.legend-bar {
  width: 100px;
  height: 8px;
  border-radius: 4px;
  background: linear-gradient(90deg, var(--density-low), var(--density-med), var(--density-high));
}

/* ── Stats Cards ─────────────────────────────────────────────────── */
.stat-card {
  background: var(--gradient-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 20px;
  position: relative;
  overflow: hidden;
}

.stat-card::after {
  content: '';
  position: absolute;
  top: -50%;
  right: -30%;
  width: 120px;
  height: 120px;
  background: var(--accent-1-glow);
  border-radius: 50%;
  filter: blur(40px);
}

.stat-value {
  font-size: 2rem;
  font-weight: 800;
  font-family: var(--font-mono);
  position: relative;
  z-index: 1;
}

.stat-label {
  color: var(--text-secondary);
  font-size: 0.8rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-top: 4px;
  position: relative;
  z-index: 1;
}

/* ── Route Finder ────────────────────────────────────────────────── */
.route-form {
  display: flex;
  gap: 12px;
  align-items: flex-end;
  flex-wrap: wrap;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
  flex: 1;
  min-width: 160px;
}

.form-label {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.form-select, .form-input {
  padding: 10px 14px;
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  transition: border-color var(--transition-fast);
  outline: none;
  appearance: none;
  -webkit-appearance: none;
}

.form-select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 36px;
}

.form-select option {
  background: var(--bg-dropdown);
  color: var(--text-primary);
  padding: 8px;
}

.form-select:focus, .form-input:focus {
  border-color: var(--accent-1);
  box-shadow: 0 0 0 3px var(--accent-1-glow);
}

/* ── Route visualization ─────────────────────────────────────────── */
.route-result {
  margin-top: 20px;
}

.route-path {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-wrap: wrap;
  padding: 16px;
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
}

.route-node {
  padding: 6px 14px;
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 600;
  font-family: var(--font-mono);
  background: var(--accent-1-glow);
  color: var(--accent-1);
  border: 1px solid rgba(99, 102, 241, 0.3);
  animation: nodeAppear 0.3s ease backwards;
}

.route-node:first-child {
  background: var(--accent-4);
  color: white;
  border-color: transparent;
}

.route-node:last-child {
  background: var(--accent-2);
  color: white;
  border-color: transparent;
}

.route-arrow {
  color: var(--text-muted);
  font-size: 0.85rem;
}

@keyframes nodeAppear {
  from { opacity: 0; transform: scale(0.7); }
  to { opacity: 1; transform: scale(1); }
}

/* ── Chat UI ─────────────────────────────────────────────────────── */
.chat-container {
  display: flex;
  flex-direction: column;
  height: 600px;
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-subtle);
  overflow: hidden;
}

.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  scroll-behavior: smooth;
}

.chat-messages::-webkit-scrollbar { width: 4px; }
.chat-messages::-webkit-scrollbar-track { background: transparent; }
.chat-messages::-webkit-scrollbar-thumb { background: var(--border-subtle); border-radius: 2px; }

.chat-bubble {
  max-width: 85%;
  padding: 12px 16px;
  border-radius: var(--radius-lg);
  font-size: 0.9rem;
  line-height: 1.55;
  animation: bubbleIn 0.25s ease;
  white-space: pre-wrap;
}

@keyframes bubbleIn {
  from { opacity: 0; transform: translateY(8px) scale(0.96); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.chat-bubble.user {
  align-self: flex-end;
  background: var(--accent-1);
  color: white;
  border-bottom-right-radius: 4px;
}

.chat-bubble.assistant {
  align-self: flex-start;
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-bottom-left-radius: 4px;
}

.chat-suggestions {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  padding: 0 20px;
  margin-bottom: 8px;
}

.chat-suggestion {
  padding: 6px 12px;
  border-radius: var(--radius-full);
  font-size: 0.78rem;
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
  font-family: var(--font-sans);
}

.chat-suggestion:hover {
  color: var(--accent-1);
  border-color: var(--accent-1);
  background: var(--accent-1-glow);
}

.chat-input-bar {
  display: flex;
  gap: 8px;
  padding: 16px 20px;
  border-top: 1px solid var(--border-subtle);
  background: var(--bg-glass);
}

.chat-input {
  flex: 1;
  padding: 10px 16px;
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  outline: none;
  transition: border-color var(--transition-fast);
}

.chat-input:focus {
  border-color: var(--accent-1);
  box-shadow: 0 0 0 3px var(--accent-1-glow);
}

/* ── Queue & Orders ──────────────────────────────────────────────── */
.queue-card {
  position: relative;
  overflow: hidden;
}

.queue-card::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  border-radius: 4px 0 0 4px;
}

.queue-card.low::before { background: var(--density-low); }
.queue-card.medium::before { background: var(--density-med); }
.queue-card.high::before { background: var(--density-high); }

.queue-length {
  font-size: 1.8rem;
  font-weight: 800;
  font-family: var(--font-mono);
}

.queue-wait {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* ── Order Modal ─────────────────────────────────────────────────── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(6px);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: fadeIn 0.2s ease;
}

@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

.modal {
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: 32px;
  width: 90%;
  max-width: 520px;
  max-height: 85vh;
  overflow-y: auto;
  animation: modalSlide 0.3s ease;
}

@keyframes modalSlide {
  from { opacity: 0; transform: translateY(24px) scale(0.97); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.modal-title {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 10px;
}

/* ── Stalls Grid ─────────────────────────────────────────────────── */
.stall-card {
  position: relative;
  overflow: hidden;
}

.stall-category-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.stall-category-badge.food { background: rgba(245, 158, 11, 0.15); color: var(--accent-3); }
.stall-category-badge.merchandise { background: rgba(139, 92, 246, 0.15); color: var(--accent-6); }
.stall-category-badge.entertainment { background: rgba(6, 182, 212, 0.15); color: var(--accent-2); }

.offer-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 8px;
  background: rgba(16, 185, 129, 0.12);
  color: var(--accent-4);
  border-radius: var(--radius-sm);
  font-size: 0.72rem;
  font-weight: 600;
}

.menu-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 0;
  border-bottom: 1px solid var(--border-subtle);
}

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

.menu-item-name {
  font-weight: 500;
  font-size: 0.85rem;
}

.menu-item-price {
  font-weight: 700;
  font-family: var(--font-mono);
  color: var(--accent-4);
  font-size: 0.85rem;
}

/* ── Help Section ────────────────────────────────────────────────── */
.help-card {
  display: flex !important;
  gap: 16px;
  align-items: flex-start;
  padding: 20px !important;
  overflow: visible !important;
}

.help-icon {
  font-size: 1.8rem;
  flex-shrink: 0;
  margin-top: 4px;
  width: 40px;
  display: flex;
  justify-content: center;
}

.help-phone {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  background: var(--gradient-danger);
  color: white;
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 600;
  margin-top: 8px;
  text-decoration: none;
  transition: transform var(--transition-fast);
}

.help-phone:hover {
  transform: scale(1.04);
  color: white;
}

/* ── Status Badges ───────────────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  font-size: 0.72rem;
  font-weight: 600;
}

.badge-success { background: rgba(16, 185, 129, 0.12); color: var(--accent-4); }
.badge-warning { background: rgba(245, 158, 11, 0.12); color: var(--accent-3); }
.badge-danger { background: rgba(239, 68, 68, 0.12); color: var(--accent-5); }
.badge-info { background: rgba(6, 182, 212, 0.12); color: var(--accent-2); }

/* ── Loading ─────────────────────────────────────────────────────── */
.loading-spinner {
  width: 36px;
  height: 36px;
  border: 3px solid var(--border-subtle);
  border-top-color: var(--accent-1);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin: 40px auto;
}

@keyframes spin { to { transform: rotate(360deg); } }

.loading-bar {
  height: 3px;
  background: var(--bg-input);
  border-radius: 2px;
  overflow: hidden;
  margin: 12px 0;
}

.loading-bar::after {
  content: '';
  display: block;
  width: 30%;
  height: 100%;
  background: var(--gradient-hero);
  border-radius: 2px;
  animation: loadSlide 1.2s ease infinite;
}

@keyframes loadSlide {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(400%); }
}

/* ── Tooltip ─────────────────────────────────────────────────────── */
.tooltip {
  position: relative;
}

.tooltip::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) scale(0.9);
  padding: 6px 10px;
  background: var(--bg-dropdown);
  color: var(--text-primary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  font-size: 0.72rem;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: all var(--transition-fast);
}

.tooltip:hover::after {
  opacity: 1;
  transform: translateX(-50%) scale(1);
}

/* ── Language Selector ───────────────────────────────────────────── */
.lang-selector {
  position: relative;
}

.lang-dropdown {
  position: fixed; /* Globalized positioning */
  top: auto;
  bottom: 80px;
  right: 16px;
  background: var(--bg-dropdown);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 4px;
  min-width: 160px;
  box-shadow: var(--shadow-lg);
  z-index: 2500; /* Above nav and everything */
  display: none;
}

.lang-dropdown.show { display: block; animation: fadeSlideIn 0.2s ease; }

.lang-option {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  cursor: pointer;
  transition: background var(--transition-fast);
  color: var(--text-primary);
  border: none;
  background: transparent;
  width: 100%;
  text-align: left;
  font-family: var(--font-sans);
}

.lang-option:hover { background: var(--bg-card-hover); }
.lang-option.active { color: var(--accent-1); font-weight: 600; }

/* ── Order tracking ──────────────────────────────────────────────── */
.order-tracker {
  margin-top: 20px;
}

.order-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  margin-bottom: 8px;
  transition: all var(--transition-fast);
}

.order-item:hover {
  border-color: var(--border-glow);
}

.order-token {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--accent-1);
}

/* ── Responsiveness ──────────────────────────────────────────────── */
@media (max-width: 768px) {
  .nav-tabs {
    top: auto;
    bottom: 0;
    left: 0;
    transform: none;
    width: 100%;
    max-width: 100%;
    z-index: 2000;
    background: var(--bg-glass);
    backdrop-filter: blur(24px) saturate(1.5);
    -webkit-backdrop-filter: blur(24px) saturate(1.5);
    border-radius: 0;
    border-top: 1px solid var(--border-subtle);
    padding: 10px 12px;
    justify-content: space-around;
    box-shadow: 0 -4px 20px rgba(0,0,0,0.4);
  }

  .nav-tab {
    flex-direction: column;
    gap: 2px;
    padding: 6px 4px;
    font-size: 0.65rem;
    flex: 1;
    text-align: center;
  }

  .nav-tab .tab-icon {
    font-size: 1.2rem;
  }

  .nav-tab span[data-i18n] {
    display: block;
  }

  /* Compact Context Bar */
  .context-bar {
    top: 60px;
    gap: 8px;
    padding: 6px 12px;
    font-size: 0.72rem;
    justify-content: space-between;
    height: auto;
    min-height: 40px;
  }

  .ctx-item {
    gap: 2px;
    white-space: nowrap;
  }
  
  .ctx-label {
    font-size: 0.62rem;
    opacity: 0.8;
  }

  /* Optimized Grid for Stats */
  #statsGrid.grid-4 {
    display: grid !important;
    grid-template-columns: 1fr 1fr !important;
    flex-direction: row !important; /* Reset from prev attempts */
    gap: 10px;
  }

  .grid-2, .grid-3, .grid-4:not(#statsGrid) {
    display: flex !important;
    flex-direction: column !important;
    width: 100%;
    gap: 12px;
  }

  .stat-card {
    padding: 12px !important;
    min-height: 80px;
    display: flex;
    flex-direction: column;
    justify-content: center;
  }

  .stat-value {
    font-size: 1.15rem !important;
  }

  .stat-label {
    font-size: 0.6rem !important;
  }

  .stat-card, .card {
    width: 100%;
    box-sizing: border-box;
  }

  .app-container {
    padding-bottom: 90px;
    padding-left: 12px;
    padding-right: 12px;
  }

  .heatmap-canvas {
    max-width: 100% !important;
    height: auto !important;
  }

  .tooltip::after {
    display: none !important;
  }

  .lang-dropdown {
    bottom: 85px;
    right: 12px;
    min-width: 180px;
  }
}

@media (max-width: 480px) {
  .app-container { padding: 0 10px; padding-bottom: 85px; }
  .card { padding: 14px; }
  .auth-control { margin-left: 0; }
}

/* ── Quantity controls ───────────────────────────────────────────── */
.qty-control {
  display: flex;
  align-items: center;
  gap: 8px;
}

.qty-btn {
  width: 28px;
  height: 28px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
  background: var(--bg-input);
  color: var(--text-primary);
  font-size: 1rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
  font-family: var(--font-sans);
}

.qty-btn:hover {
  border-color: var(--accent-1);
  background: var(--accent-1-glow);
}

.qty-value {
  font-family: var(--font-mono);
  font-weight: 600;
  min-width: 20px;
  text-align: center;
}

/* ── Filter tabs ─────────────────────────────────────────────────── */
.filter-tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.filter-tab {
  padding: 6px 14px;
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 500;
  border: 1px solid var(--border-subtle);
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
  font-family: var(--font-sans);
}

.filter-tab:hover {
  border-color: var(--accent-1);
  color: var(--text-primary);
}

.filter-tab.active {
  background: var(--accent-1);
  color: white;
  border-color: transparent;
}

/* ── Scrollbar styling ───────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-subtle); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* ── Empty state ─────────────────────────────────────────────────── */
.empty-state {
  text-align: center;
  padding: 40px 20px;
  color: var(--text-muted);
}

.empty-state-icon {
  font-size: 3rem;
  margin-bottom: 12px;
}

/* ── Pulse animation for live indicators ─────────────────────────── */
.pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-4);
  position: relative;
}

.pulse-dot::after {
  content: '';
  position: absolute;
  inset: -3px;
  border-radius: 50%;
  border: 2px solid var(--accent-4);
  animation: pulse 2s ease infinite;
}

@keyframes pulse {
  0% { transform: scale(1); opacity: 1; }
  100% { transform: scale(2); opacity: 0; }
}

/* ── Zone location hint ──────────────────────────────────────────── */
.zone-hint {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 8px;
  background: var(--bg-input);
  border-radius: var(--radius-sm);
  font-size: 0.72rem;
  color: var(--text-muted);
}

/* ══════════════════════════════════════════════════════════════════
   AUTHENTICATION
   ══════════════════════════════════════════════════════════════════ */
.auth-control {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-left: 12px;
  padding-left: 12px;
  border-left: 1px solid var(--border-subtle);
}

.user-profile {
  display: flex;
  align-items: center;
  gap: 12px;
}

.user-icon {
  font-size: 1.2rem;
}

.user-id {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent-1);
  max-width: 100px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.auth-modal {
  max-width: 400px;
}

.auth-tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 10px;
}

.auth-tab {
  background: none;
  border: none;
  color: var(--text-dim);
  font-weight: 600;
  font-size: 0.9rem;
  padding: 6px 12px;
  cursor: pointer;
  transition: all 0.2s ease;
  border-radius: 6px;
}

.auth-tab.active {
  color: var(--accent-1);
  background: var(--bg-card);
}

.auth-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.auth-actions {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 8px;
}

.auth-footer {
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-dim);
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--border-subtle);
}

.btn-link {
  background: none;
  border: none;
  color: var(--accent-1);
  font-size: inherit;
  font-weight: 600;
  cursor: pointer;
  padding: 0;
  margin-left: 4px;
}

.btn-link:hover {
  text-decoration: underline;
}

.w-100 {
  width: 100%;
}

/* ── Validation ──────────────────────────────────────────────────── */
.input-error {
  border-color: #ef4444 !important;
  box-shadow: 0 0 0 2px rgba(239, 68, 68, 0.2) !important;
}

.error-text {
  color: #f87171;
  font-size: 0.75rem;
  margin-top: -12px;
  margin-bottom: 4px;
  display: block;
  font-weight: 500;
}

/* ── Context Management & Robustness ─────────────────────────── */
.context-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  padding: 10px 20px;
  background: var(--bg-card);
  border-bottom: 1px solid var(--border-subtle);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  position: sticky;
  top: 61px;
  z-index: 90;
  font-size: 0.85rem;
  flex-wrap: wrap;
}

.ctx-item {
  display: flex;
  align-items: center;
  gap: 8px;
}

.ctx-label {
  color: var(--text-muted);
  font-weight: 600;
  text-transform: uppercase;
  font-size: 0.7rem;
  letter-spacing: 0.05em;
}

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

.btn-expand-map {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--bg-glass);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 10;
  transition: all var(--transition-fast);
  backdrop-filter: blur(8px);
}

.btn-expand-map:hover {
  background: var(--accent-1-glow);
  transform: scale(1.1);
}

.full-map-modal {
  width: 100vw;
  height: 100vh;
  max-width: none;
  max-height: none;
  margin: 0;
  border-radius: 0;
  display: flex;
  flex-direction: column;
}

.stadium-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
  margin-top: 30px;
}

.stadium-card {
  cursor: pointer;
  text-align: center;
  padding: 40px 20px;
  transition: transform var(--transition-med), border-color var(--transition-med);
}

.stadium-card:hover {
  transform: translateY(-5px);
  border-color: var(--accent-1);
}

.stadium-card .card-subtitle {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-top: 4px;
}

.stadium-card .card-action {
  margin-top: 20px;
  font-weight: 700;
  color: var(--accent-1);
  font-size: 0.8rem;
  text-transform: uppercase;
}

.global-loader {
  position: fixed;
  inset: 0;
  background: var(--bg-glass);
  backdrop-filter: blur(8px);
  z-index: 1000;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  animation: fadeIn 0.3s ease;
}

.spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--border-subtle);
  border-top-color: var(--accent-1);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Map Expansion - UI Hiding */
body.map-expanded .nav-tabs,
body.map-expanded .app-header,
body.map-expanded .context-bar {
  display: none !important;
}

.modal-overlay {
  z-index: 9999; /* Ensure modal is on top of everything */
}