/* ===== TripSaathi Global Styles ===== */
:root {
  --bg-primary: #0f172a;
  --bg-secondary: #1e293b;
  --bg-card: #1e293b;
  --bg-card-hover: #263348;
  --accent: #38bdf8;
  --accent-dark: #0ea5e9;
  --accent-glow: rgba(56, 189, 248, 0.15);
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --success: #22c55e;
  --warning: #f59e0b;
  --danger: #ef4444;
  --border: #334155;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 4px 24px rgba(0,0,0,0.3);
  --transition: 0.3s ease;
}

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

body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
}

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

img { max-width: 100%; height: auto; }

/* ===== Header / Navigation ===== */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(15, 23, 42, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 0 24px;
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 64px;
}

.logo {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--accent);
  letter-spacing: -0.5px;
}

.logo span { color: var(--text-primary); }

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

.nav a {
  color: var(--text-secondary);
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 500;
  transition: all var(--transition);
}

.nav a:hover,
.nav a.active {
  color: var(--accent);
  background: var(--accent-glow);
}

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 4px;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
}

.btn-primary {
  background: var(--accent);
  color: #0f172a;
}

.btn-primary:hover {
  background: var(--accent-dark);
  color: #0f172a;
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(56, 189, 248, 0.3);
}

.btn-outline {
  background: transparent;
  color: var(--accent);
  border: 2px solid var(--accent);
}

.btn-outline:hover {
  background: var(--accent);
  color: #0f172a;
}

.btn-sm { padding: 8px 16px; font-size: 0.85rem; }
.btn-lg { padding: 16px 32px; font-size: 1.1rem; }

/* ===== Layout ===== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 80px 24px;
}

.section-header {
  text-align: center;
  margin-bottom: 48px;
}

.section-header h2 {
  font-size: 2rem;
  margin-bottom: 12px;
}

.section-header p {
  color: var(--text-secondary);
  font-size: 1.1rem;
  max-width: 600px;
  margin: 0 auto;
}

/* ===== Hero ===== */
.hero {
  text-align: center;
  padding: 100px 24px 80px;
  background: linear-gradient(180deg, rgba(56, 189, 248, 0.05) 0%, transparent 60%);
}

.hero h1 {
  font-size: 3.2rem;
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 20px;
  letter-spacing: -1px;
}

.hero h1 .highlight {
  color: var(--accent);
}

.hero p {
  font-size: 1.2rem;
  color: var(--text-secondary);
  max-width: 560px;
  margin: 0 auto 32px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ===== Cards ===== */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
  max-width: 1200px;
  margin: 0 auto;
}

.card {
  background: var(--bg-card);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: all var(--transition);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: var(--accent);
}

.card-img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  background: var(--bg-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
}

.card-body { padding: 20px; }

.card-body h3 {
  font-size: 1.15rem;
  margin-bottom: 8px;
}

.card-body p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 16px;
}

.card-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

.price {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--success);
}

.tag {
  display: inline-block;
  padding: 4px 10px;
  background: var(--accent-glow);
  color: var(--accent);
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
}

.tag-success { background: rgba(34,197,94,0.15); color: var(--success); }
.tag-warning { background: rgba(245,158,11,0.15); color: var(--warning); }

/* ===== Forms ===== */
.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  margin-bottom: 6px;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.form-control {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 0.95rem;
  transition: border-color var(--transition);
}

.form-control:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

select.form-control {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2394a3b8' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 36px;
}

textarea.form-control {
  min-height: 120px;
  resize: vertical;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

/* ===== Feature Grid ===== */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 24px;
  max-width: 1200px;
  margin: 0 auto;
}

.feature-item {
  background: var(--bg-card);
  padding: 28px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  text-align: center;
  transition: all var(--transition);
}

.feature-item:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}

.feature-icon {
  font-size: 2.5rem;
  margin-bottom: 16px;
}

.feature-item h3 {
  margin-bottom: 8px;
  font-size: 1.05rem;
}

.feature-item p {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* ===== Trip Planner ===== */
.planner-box {
  max-width: 700px;
  margin: 0 auto;
  background: var(--bg-card);
  padding: 36px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.budget-range {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 8px;
}

.budget-range input[type="range"] {
  flex: 1;
  accent-color: var(--accent);
  height: 6px;
}

.budget-display {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--accent);
  text-align: center;
  margin-bottom: 24px;
}

.result-box {
  background: var(--bg-primary);
  border-radius: var(--radius-sm);
  padding: 24px;
  margin-top: 24px;
  border: 1px solid var(--border);
}

.result-box h3 { margin-bottom: 16px; color: var(--accent); }

.itinerary-item {
  display: flex;
  gap: 16px;
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
}

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

.itinerary-icon { font-size: 1.5rem; flex-shrink: 0; }

.itinerary-details h4 { font-size: 0.95rem; margin-bottom: 4px; }
.itinerary-details p { font-size: 0.85rem; color: var(--text-secondary); }
.itinerary-details .cost { color: var(--success); font-weight: 600; }

/* ===== Experiences ===== */
.experience-hero {
  padding: 80px 24px 40px;
  text-align: center;
  background: linear-gradient(180deg, rgba(56, 189, 248, 0.08) 0%, transparent 100%);
}

.category-tabs {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 40px;
}

.category-tab {
  padding: 10px 20px;
  border-radius: 24px;
  background: var(--bg-secondary);
  color: var(--text-secondary);
  border: 1px solid var(--border);
  cursor: pointer;
  font-size: 0.9rem;
  font-weight: 500;
  transition: all var(--transition);
}

.category-tab:hover,
.category-tab.active {
  background: var(--accent);
  color: #0f172a;
  border-color: var(--accent);
}

/* ===== Homestay ===== */
.rating {
  color: var(--warning);
  font-size: 0.9rem;
}

.amenities {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 8px;
}

.amenity {
  font-size: 0.78rem;
  padding: 3px 8px;
  background: rgba(148, 163, 184, 0.1);
  border-radius: 4px;
  color: var(--text-secondary);
}

/* ===== Group Trip ===== */
.group-banner {
  background: linear-gradient(135deg, var(--bg-secondary), var(--bg-primary));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  text-align: center;
  margin-bottom: 40px;
}

.group-banner h3 { font-size: 1.3rem; margin-bottom: 8px; }
.group-banner p { color: var(--text-secondary); }

.steps {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 24px;
  margin: 40px auto;
  max-width: 1000px;
}

.step {
  text-align: center;
  padding: 24px;
}

.step-number {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--accent);
  color: #0f172a;
  font-weight: 800;
  font-size: 1.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
}

.step h4 { margin-bottom: 6px; }
.step p { color: var(--text-secondary); font-size: 0.88rem; }

/* ===== Footer ===== */
.footer {
  background: #020617;
  border-top: 1px solid var(--border);
  padding: 60px 24px 30px;
}

.footer-grid {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 40px;
  margin-bottom: 40px;
}

.footer-col h4 {
  color: var(--accent);
  margin-bottom: 16px;
  font-size: 1rem;
}

.footer-col p,
.footer-col a {
  color: var(--text-secondary);
  font-size: 0.9rem;
  display: block;
  margin-bottom: 8px;
}

.footer-col a:hover { color: var(--accent); }

.footer-bottom {
  text-align: center;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.85rem;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .hero h1 { font-size: 2rem; }
  .hero p { font-size: 1rem; }
  .section { padding: 48px 16px; }
  .form-row { grid-template-columns: 1fr; }
  .card-grid { grid-template-columns: 1fr; }

  .nav {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: rgba(15, 23, 42, 0.98);
    flex-direction: column;
    padding: 16px;
    border-bottom: 1px solid var(--border);
  }

  .nav.open { display: flex; }
  .mobile-toggle { display: block; }

  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 480px) {
  .hero h1 { font-size: 1.6rem; }
  .hero-actions { flex-direction: column; align-items: center; }
  .footer-grid { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
}

/* ===== Utilities ===== */
.text-center { text-align: center; }
.mt-2 { margin-top: 16px; }
.mt-4 { margin-top: 32px; }
.mb-2 { margin-bottom: 16px; }
.mb-4 { margin-bottom: 32px; }
.hidden { display: none; }