:root {
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --primary-light: #eff6ff;
  --primary-border: #bfdbfe;
  --primary-text: #1d4ed8;
  --bg-color: #f8fafc;
  --card-bg: #ffffff;
  --text-main: #0f172a;
  --text-muted: #64748b;
  --text-subtle: #94a3b8;
  --border-color: #e2e8f0;
  --border-light: #f1f5f9;
  --error-bg: #fef2f2;
  --error-border: #fecaca;
  --error-text: #b91c1c;
  --success-bg: #f0fdf4;
  --success-border: #bbf7d0;
  --success-text: #15803d;
  --warning-bg: #fffbeb;
  --warning-border: #fde68a;
  --warning-text: #b45309;
  --radius: 10px;
  --radius-sm: 6px;
  --shadow-sm: 0 1px 2px 0 rgb(15 23 42 / 0.05);
  --shadow: 0 1px 3px 0 rgb(15 23 42 / 0.08), 0 1px 2px -1px rgb(15 23 42 / 0.08);
  --shadow-md: 0 4px 6px -1px rgb(15 23 42 / 0.08), 0 2px 4px -2px rgb(15 23 42 / 0.06);
  --shadow-lg: 0 10px 15px -3px rgb(15 23 42 / 0.08), 0 4px 6px -4px rgb(15 23 42 / 0.04);
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

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

body {
  font-family: var(--font-family);
  background-color: var(--bg-color);
  color: var(--text-main);
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
}

/* Navbar */
.navbar {
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border-color);
  padding: 0.75rem 1.25rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 50;
  box-shadow: 0 1px 2px 0 rgb(15 23 42 / 0.03);
}

.brand {
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: -0.01em;
  color: var(--primary);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.55rem;
  transition: opacity 0.15s ease;
}

.brand:hover {
  opacity: 0.88;
}

.brand-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: var(--primary-light);
  color: var(--primary);
  border: 1px solid var(--primary-border);
  flex-shrink: 0;
}

.brand-nav {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.brand-nav-link {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-muted);
  text-decoration: none;
  padding: 0.35rem 0.65rem;
  border-radius: var(--radius-sm);
  transition: all 0.15s ease;
}

.brand-nav-link:hover {
  color: var(--primary);
  background: var(--primary-light);
}

.nav-user {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  font-size: 0.85rem;
}

.nav-user-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-weight: 600;
  color: var(--text-main);
  background: var(--bg-color);
  border: 1px solid var(--border-color);
  padding: 0.25rem 0.55rem;
  border-radius: 6px;
}

.nav-user a,
.nav-logout-btn {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.8rem;
  padding: 0.25rem 0.5rem;
  border-radius: 6px;
  border: 1px solid var(--border-color);
  background: #ffffff;
  transition: all 0.15s ease;
}

.nav-user a:hover,
.nav-logout-btn:hover {
  background: var(--error-bg);
  border-color: var(--error-border);
  color: var(--error-text);
}

/* Container */
.container {
  width: 100%;
  max-width: 860px;
  margin: 1.5rem auto 3rem;
  padding: 0 1rem;
  flex: 1;
}

.container-narrow {
  max-width: 480px;
}

/* Cards */
.card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.5rem;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.card-header {
  text-align: center;
  margin-bottom: 1.5rem;
}

.card-icon {
  width: 48px;
  height: 48px;
  margin: 0 auto 1rem;
  background: var(--primary-light);
  color: var(--primary);
  border: 1px solid var(--primary-border);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.card-title {
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-bottom: 0.35rem;
  color: var(--text-main);
}

.card-subtitle {
  color: var(--text-muted);
  font-size: 0.925rem;
}

/* Consistent Page Navigation & Back Button */
.page-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}

.page-nav-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 2rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border-color);
}

.nav-back-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-muted);
  background: #ffffff;
  border: 1px solid var(--border-color);
  padding: 0.45rem 0.85rem;
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: all 0.15s ease;
  box-shadow: var(--shadow-sm);
}

.nav-back-btn:hover {
  color: var(--primary);
  border-color: var(--primary-border);
  background: var(--primary-light);
}

.btn-scroll-top {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.825rem;
  font-weight: 500;
  color: var(--text-muted);
  background: #ffffff;
  border: 1px solid var(--border-color);
  padding: 0.45rem 0.85rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.15s ease;
  box-shadow: var(--shadow-sm);
}

.btn-scroll-top:hover {
  color: var(--primary);
  border-color: var(--primary-border);
  background: var(--primary-light);
}

/* Floating Global Scroll-to-Top Button */
.global-scroll-top {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 40;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: #ffffff;
  border: 1px solid var(--border-color);
  color: var(--primary);
  box-shadow: var(--shadow-md);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transform: translateY(8px);
  transition: opacity 0.2s ease, transform 0.2s ease, background 0.15s ease;
}

.global-scroll-top.visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.global-scroll-top:hover {
  background: var(--primary-light);
  border-color: var(--primary-border);
}

/* Alerts & Messages */
.alert {
  padding: 0.85rem 1.1rem;
  border-radius: 8px;
  margin-bottom: 1.25rem;
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.alert-error {
  background-color: var(--error-bg);
  border: 1px solid var(--error-border);
  color: var(--error-text);
}

.alert-success {
  background-color: var(--success-bg);
  border: 1px solid var(--success-border);
  color: var(--success-text);
}

.alert-info {
  background-color: var(--primary-light);
  border: 1px solid var(--primary-border);
  color: var(--primary-text);
}

/* Form Elements */
.form-group {
  margin-bottom: 1.25rem;
}

.form-label {
  display: block;
  font-weight: 600;
  font-size: 0.875rem;
  margin-bottom: 0.4rem;
  color: var(--text-main);
}

.form-input {
  width: 100%;
  padding: 0.7rem 0.95rem;
  font-size: 0.95rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
  background: #ffffff;
  color: var(--text-main);
}

.form-input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  width: 100%;
  padding: 0.75rem 1.25rem;
  font-size: 0.95rem;
  font-weight: 600;
  text-align: center;
  color: #ffffff;
  background-color: var(--primary);
  border: 1px solid var(--primary);
  border-radius: var(--radius-sm);
  cursor: pointer;
  text-decoration: none;
  transition: background-color 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease;
  box-shadow: var(--shadow-sm);
}

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

.btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  padding: 0.5rem 0.95rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--primary);
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: all 0.15s ease;
  box-shadow: var(--shadow-sm);
  cursor: pointer;
}

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

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

.btn-light:hover {
  background: var(--primary);
  border-color: var(--primary);
  color: #ffffff;
}

.pill-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  background: #ffffff;
  border: 1px solid var(--border-color);
  color: var(--text-main);
  padding: 0.35rem 0.75rem;
  border-radius: 9999px;
  font-size: 0.825rem;
  font-weight: 500;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.15s ease;
  box-shadow: var(--shadow-sm);
}

.pill-btn:hover {
  background: var(--primary-light);
  border-color: var(--primary-border);
  color: var(--primary);
}

.pill-btn.active {
  background: var(--primary);
  border-color: var(--primary);
  color: #ffffff;
}

.pill-btn.danger {
  color: var(--error-text);
  border-color: var(--error-border);
  background: #ffffff;
}

.pill-btn.danger:hover {
  background: var(--error-bg);
}

/* Badges & Indicators */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.2rem 0.55rem;
  border-radius: 6px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.01em;
}

.badge-amenity {
  background: #f1f5f9;
  color: #475569;
  border: 1px solid var(--border-color);
}

.badge-cuisine {
  background: var(--primary-light);
  color: var(--primary);
  border: 1px solid var(--primary-border);
}

.badge-distance {
  background: #ecfdf5;
  color: #047857;
  border: 1px solid #a7f3d0;
}

.status-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #10b981;
}

.status-dot-locked {
  background: #94a3b8;
}

/* Restaurant Listings & Cards */
.page-header {
  margin-bottom: 1.5rem;
}

.page-title {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-main);
}

.filter-card {
  padding: 1.25rem;
  margin-bottom: 1.5rem;
}

.filter-row {
  display: flex;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.search-box {
  flex: 1;
}

.filter-pills-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-top: 0.75rem;
  flex-wrap: wrap;
}

.filter-label {
  font-size: 0.825rem;
  font-weight: 600;
  color: var(--text-muted);
  min-width: 85px;
}

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

.restaurant-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1rem;
  margin-bottom: 2rem;
}

.restaurant-card {
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease;
}

.restaurant-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary-border);
}

.restaurant-card.is-favorite {
  border-color: #fde68a;
  background: #fffefb;
}

.restaurant-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 0.75rem;
  gap: 0.5rem;
}

.restaurant-name {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 0.35rem;
  letter-spacing: -0.01em;
}

.restaurant-name a {
  color: var(--text-main);
  text-decoration: none;
}

.restaurant-name a:hover {
  color: var(--primary);
}

.fav-btn {
  background: none;
  border: none;
  color: var(--text-subtle);
  cursor: pointer;
  padding: 0.25rem;
  border-radius: 6px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: color 0.15s ease, transform 0.15s ease;
}

.fav-btn:hover {
  color: #f59e0b;
  transform: scale(1.1);
}

.fav-btn.active {
  color: #f59e0b;
}

.restaurant-meta {
  font-size: 0.85rem;
  margin-bottom: 1.25rem;
  flex: 1;
}

.meta-item {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  margin-bottom: 0.35rem;
  color: var(--text-main);
}

.meta-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  flex-shrink: 0;
}

.restaurant-card-footer {
  border-top: 1px solid var(--border-color);
  padding-top: 0.75rem;
  margin-top: auto;
  text-align: right;
}

/* Suggestions on Gate Name */
.suggestions {
  margin-top: 1.25rem;
  border-top: 1px solid var(--border-color);
  padding-top: 1.25rem;
}

.suggestions-title {
  font-size: 0.825rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}

/* Footer */
.footer {
  text-align: center;
  padding: 1.5rem;
  color: var(--text-muted);
  font-size: 0.825rem;
  border-top: 1px solid var(--border-color);
  margin-top: auto;
  background: var(--card-bg);
}

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

@media (max-width: 640px) {
  .navbar {
    padding: 0.65rem 0.95rem;
  }
  .brand-name {
    font-size: 0.95rem;
  }
  .container {
    padding: 0 0.85rem;
    margin: 1rem auto 2.5rem;
  }
  .card {
    padding: 1.15rem;
  }
}