:root {
  --primary: #3b82f6;
  --primary-dark: #084fc3;
  --secondary: #1e3a5f;
  --secondary-light: #516d92;
  --bg-dark: #0a0a0a;
  --bg-card: #111111;
  --bg-card-hover: #1a1a1a;
  --text-white: #ffffff;
  --text-gray: #9ca3af;
  --text-muted: #6b7280;
  --border: #27272a;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
  background: var(--bg-dark);
  color: var(--text-white);
  line-height: 1.6;
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: color 0.2s;
}

a:hover {
  color: var(--primary-dark);
}

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Header */
.header {
  background: var(--secondary);
  padding: 16px 0;
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid var(--border);
}

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

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

.logo img {
  height: 48px;
  width: auto;
}

.logo-text {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-white);
}

.nav {
  display: flex;
  gap: 32px;
}

.nav a {
  color: var(--text-gray);
  font-weight: 500;
  transition: color 0.2s;
}

.nav a:hover, .nav a.active {
  color: var(--primary);
}

.header-cta {
  display: flex;
  align-items: center;
  gap: 16px;
}

.phone-link {
  color: var(--text-white);
  font-weight: 600;
  font-size: 18px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 16px;
  cursor: pointer;
  transition: all 0.2s;
  border: none;
}

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

.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
}

.btn-secondary {
  background: var(--secondary);
  color: white;
  border: 1px solid var(--border);
}

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

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

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

/* Hero Section */
.hero {
  padding: 80px 0;
  background: linear-gradient(135deg, var(--secondary) 0%, var(--bg-dark) 100%);
  text-align: center;
}

.hero h1 {
  font-size: 48px;
  font-weight: 800;
  margin-bottom: 16px;
}

.hero p {
  font-size: 20px;
  color: var(--text-gray);
  margin-bottom: 32px;
}

.hero-search {
  max-width: 600px;
  margin: 0 auto;
  display: flex;
  gap: 12px;
}

.hero-search input {
  flex: 1;
  padding: 16px 20px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text-white);
  font-size: 16px;
}

.hero-search input::placeholder {
  color: var(--text-muted);
}

/* Vehicle Grid */
.section {
  padding: 60px 0;
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 32px;
}

.section-title {
  font-size: 32px;
  font-weight: 700;
}

.vehicle-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 24px;
}

.vehicle-card {
  background: var(--bg-card);
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--border);
  transition: transform 0.2s, box-shadow 0.2s;
}

.vehicle-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.3);
}

.vehicle-image {
  width: 100%;
  height: 220px;
  object-fit: cover;
}

.vehicle-info {
  padding: 20px;
}

.vehicle-title {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 8px;
}

.vehicle-details {
  display: flex;
  gap: 16px;
  color: var(--text-gray);
  font-size: 14px;
  margin-bottom: 12px;
}

.vehicle-price {
  font-size: 24px;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 16px;
}

.vehicle-badges {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.badge {
  padding: 4px 10px;
  border-radius: 4px;
  font-size: 12px;
  font-weight: 600;
  background: var(--secondary);
  color: var(--text-gray);
}

.badge-new {
  background: #22c55e20;
  color: #22c55e;
}

.badge-certified {
  background: #3b82f620;
  color: #3b82f6;
}

/* Vehicle Detail Page */
.vehicle-detail {
  padding: 40px 0;
}

.vehicle-detail-grid {
  display: grid;
  grid-template-columns: 1fr 400px;
  gap: 40px;
}

.vehicle-gallery {
  background: var(--bg-card);
  border-radius: 12px;
  overflow: hidden;
}

.main-image {
  width: 100%;
  height: 500px;
  object-fit: cover;
}

.vehicle-sidebar {
  position: sticky;
  top: 100px;
}

.price-card {
  background: var(--bg-card);
  border-radius: 12px;
  padding: 24px;
  border: 1px solid var(--border);
  margin-bottom: 24px;
}

.price-card .price {
  font-size: 36px;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 8px;
}

.price-card .monthly {
  color: var(--text-gray);
  font-size: 14px;
  margin-bottom: 20px;
}

.specs-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin: 24px 0;
}

.spec-item {
  background: var(--secondary);
  padding: 12px;
  border-radius: 8px;
}

.spec-label {
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.spec-value {
  font-weight: 600;
}

/* Forms */
.form-card {
  background: var(--bg-card);
  border-radius: 12px;
  padding: 24px;
  border: 1px solid var(--border);
}

.form-card h3 {
  font-size: 20px;
  margin-bottom: 20px;
}

.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 6px;
  color: var(--text-gray);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px 16px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--secondary);
  color: var(--text-white);
  font-size: 16px;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--primary);
}

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

/* Financing Calculator */
.calculator {
  background: var(--bg-card);
  border-radius: 12px;
  padding: 24px;
  border: 1px solid var(--border);
  margin-top: 24px;
}

.calculator h3 {
  font-size: 18px;
  margin-bottom: 20px;
}

.calculator-result {
  text-align: center;
  padding: 20px;
  background: var(--secondary);
  border-radius: 8px;
  margin-top: 20px;
}

.monthly-payment {
  font-size: 36px;
  font-weight: 800;
  color: var(--primary);
}

.payment-label {
  color: var(--text-gray);
  font-size: 14px;
}

/* Filters */
.filters {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 32px;
  padding: 20px;
  background: var(--bg-card);
  border-radius: 12px;
  border: 1px solid var(--border);
}

.filter-group {
  flex: 1;
  min-width: 150px;
}

.filter-group label {
  display: block;
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.filter-group select {
  width: 100%;
  padding: 10px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--secondary);
  color: var(--text-white);
}

/* Footer */
.footer {
  background: var(--secondary);
  padding: 60px 0 30px;
  margin-top: 60px;
  border-top: 1px solid var(--border);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand p {
  color: var(--text-gray);
  margin-top: 12px;
  max-width: 300px;
}

.footer-title {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 16px;
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 8px;
}

.footer-links a {
  color: var(--text-gray);
}

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

.footer-bottom {
  text-align: center;
  padding-top: 30px;
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 14px;
}

.social-links {
  display: flex;
  gap: 16px;
  margin-top: 16px;
}

.social-links a {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--bg-card);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-gray);
  transition: all 0.2s;
}

.social-links a:hover {
  background: var(--primary);
  color: white;
}

/* Success/Error Messages */
.alert {
  padding: 16px 20px;
  border-radius: 8px;
  margin-bottom: 20px;
}

.alert-success {
  background: #22c55e20;
  color: #22c55e;
  border: 1px solid #22c55e40;
}

.alert-error {
  background: #ef444420;
  color: #ef4444;
  border: 1px solid #ef444440;
}

/* Loading Spinner */
.spinner {
  width: 20px;
  height: 20px;
  border: 2px solid transparent;
  border-top-color: currentColor;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

/* Responsive */
@media (max-width: 1024px) {
  .vehicle-detail-grid {
    grid-template-columns: 1fr;
  }

  .vehicle-sidebar {
    position: static;
  }

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

@media (max-width: 768px) {
  .header-content {
    flex-wrap: wrap;
    gap: 16px;
  }

  .nav {
    order: 3;
    width: 100%;
    justify-content: center;
    gap: 20px;
  }

  .hero h1 {
    font-size: 32px;
  }

  .hero-search {
    flex-direction: column;
  }

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

  .form-row {
    grid-template-columns: 1fr;
  }

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

  .filters {
    flex-direction: column;
  }
}