/**
 * Riverside Auto Rhode Island - Custom Styles
 * Premium automotive dealership design system
 * @version 1.0.0
 * @date 2025-12-22
 */

/* ============================================
   CSS VARIABLES - DESIGN TOKENS
   ============================================ */
:root {
  /* Brand Colors - Automotive Theme */
  --color-primary: #1e3a8a; /* Deep Blue */
  --color-primary-light: #3b82f6;
  --color-primary-dark: #1e40af;
  --color-secondary: #dc2626; /* Accent Red */
  --color-secondary-light: #ef4444;
  --color-secondary-dark: #b91c1c;
  
  /* Neutral Colors */
  --color-dark: #0f172a;
  --color-gray-900: #1e293b;
  --color-gray-800: #334155;
  --color-gray-700: #475569;
  --color-gray-600: #64748b;
  --color-gray-500: #94a3b8;
  --color-gray-400: #cbd5e1;
  --color-gray-300: #e2e8f0;
  --color-gray-200: #f1f5f9;
  --color-gray-100: #f8fafc;
  --color-white: #ffffff;
  
  /* Metallic Accents */
  --color-silver: #c0c0c0;
  --color-silver-light: #e5e5e5;
  --color-gold: #d4af37;
  
  /* Semantic Colors */
  --color-success: #10b981;
  --color-warning: #f59e0b;
  --color-error: #ef4444;
  --color-info: #3b82f6;
  
  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  
  /* Font Sizes */
  --text-xs: 0.75rem;    /* 12px */
  --text-sm: 0.875rem;   /* 14px */
  --text-base: 1rem;     /* 16px */
  --text-lg: 1.125rem;   /* 18px */
  --text-xl: 1.25rem;    /* 20px */
  --text-2xl: 1.5rem;    /* 24px */
  --text-3xl: 1.875rem;  /* 30px */
  --text-4xl: 2.25rem;   /* 36px */
  --text-5xl: 3rem;      /* 48px */
  --text-6xl: 3.75rem;   /* 60px */
  
  /* Spacing */
  --spacing-1: 0.25rem;  /* 4px */
  --spacing-2: 0.5rem;   /* 8px */
  --spacing-3: 0.75rem;  /* 12px */
  --spacing-4: 1rem;     /* 16px */
  --spacing-5: 1.25rem;  /* 20px */
  --spacing-6: 1.5rem;   /* 24px */
  --spacing-8: 2rem;     /* 32px */
  --spacing-10: 2.5rem;  /* 40px */
  --spacing-12: 3rem;    /* 48px */
  --spacing-16: 4rem;    /* 64px */
  --spacing-20: 5rem;    /* 80px */
  
  /* Border Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;
  
  /* Shadows */
  --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, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  
  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-base: 300ms ease-in-out;
  --transition-slow: 500ms ease-in-out;
  
  /* Z-Index */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-popover: 1060;
  --z-tooltip: 1070;
}

/* ============================================
   GOOGLE FONTS IMPORT
   ============================================ */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Outfit:wght@400;500;600;700;800;900&display=swap');

/* ============================================
   RESET & BASE STYLES
   ============================================ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-primary);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--color-gray-800);
  background-color: var(--color-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ============================================
   TYPOGRAPHY
   ============================================ */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-dark);
  margin-bottom: var(--spacing-4);
}

h1 {
  font-size: var(--text-5xl);
  font-weight: 900;
  letter-spacing: -0.02em;
}

h2 {
  font-size: var(--text-4xl);
  font-weight: 800;
  letter-spacing: -0.01em;
}

h3 {
  font-size: var(--text-3xl);
  font-weight: 700;
}

h4 {
  font-size: var(--text-2xl);
  font-weight: 600;
}

h5 {
  font-size: var(--text-xl);
  font-weight: 600;
}

h6 {
  font-size: var(--text-lg);
  font-weight: 600;
}

p {
  margin-bottom: var(--spacing-4);
  color: var(--color-gray-700);
}

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

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

strong, b {
  font-weight: 600;
}

/* ============================================
   LAYOUT UTILITIES
   ============================================ */
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--spacing-4);
}

.container-wide {
  max-width: 1536px;
}

.container-narrow {
  max-width: 960px;
}

.section {
  padding: var(--spacing-16) 0;
}

.section-sm {
  padding: var(--spacing-12) 0;
}

.section-lg {
  padding: var(--spacing-20) 0;
}

/* ============================================
   HEADER & NAVIGATION
   ============================================ */
.site-header {
  background: linear-gradient(135deg, var(--color-dark) 0%, var(--color-gray-900) 100%);
  box-shadow: var(--shadow-md);
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  transition: all var(--transition-base);
}

.site-header.scrolled {
  box-shadow: var(--shadow-lg);
}

.site-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-4) 0;
}

.site-logo {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: 900;
  color: var(--color-white);
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  transition: transform var(--transition-fast);
}

.site-logo:hover {
  transform: scale(1.05);
  color: var(--color-white);
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: var(--spacing-8);
  align-items: center;
}

.nav-link {
  color: var(--color-gray-300);
  font-weight: 500;
  font-size: var(--text-base);
  padding: var(--spacing-2) var(--spacing-3);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--color-secondary);
  transition: all var(--transition-base);
  transform: translateX(-50%);
}

.nav-link:hover {
  color: var(--color-white);
  background: rgba(255, 255, 255, 0.1);
}

.nav-link:hover::after {
  width: 80%;
}

.nav-link.active {
  color: var(--color-white);
  background: rgba(255, 255, 255, 0.15);
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--color-white);
  font-size: var(--text-2xl);
  cursor: pointer;
  padding: var(--spacing-2);
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-2);
  padding: var(--spacing-3) var(--spacing-6);
  font-family: var(--font-heading);
  font-size: var(--text-base);
  font-weight: 600;
  border-radius: var(--radius-lg);
  border: none;
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: var(--color-white);
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-primary) 100%);
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
  color: var(--color-white);
}

.btn-secondary {
  background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-secondary-dark) 100%);
  color: var(--color-white);
  box-shadow: var(--shadow-md);
}

.btn-secondary:hover {
  background: linear-gradient(135deg, var(--color-secondary-light) 0%, var(--color-secondary) 100%);
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
  color: var(--color-white);
}

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

.btn-outline:hover {
  background: var(--color-primary);
  color: var(--color-white);
  transform: translateY(-2px);
}

.btn-lg {
  padding: var(--spacing-4) var(--spacing-8);
  font-size: var(--text-lg);
}

.btn-sm {
  padding: var(--spacing-2) var(--spacing-4);
  font-size: var(--text-sm);
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
  position: relative;
  background: linear-gradient(135deg, var(--color-dark) 0%, var(--color-gray-900) 50%, var(--color-primary-dark) 100%);
  color: var(--color-white);
  padding: var(--spacing-20) 0;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1200 600"><path d="M0,300 Q300,100 600,300 T1200,300 L1200,600 L0,600 Z" fill="rgba(255,255,255,0.03)"/></svg>');
  background-size: cover;
  opacity: 0.5;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
}

.hero h1 {
  color: var(--color-white);
  font-size: var(--text-6xl);
  margin-bottom: var(--spacing-6);
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.hero p {
  color: var(--color-gray-300);
  font-size: var(--text-xl);
  margin-bottom: var(--spacing-8);
}

.hero-cta {
  display: flex;
  gap: var(--spacing-4);
  flex-wrap: wrap;
}

/* ============================================
   CARDS
   ============================================ */
.card {
  background: var(--color-white);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  transition: all var(--transition-base);
}

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

.card-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.card-content {
  padding: var(--spacing-6);
}

.card-title {
  font-size: var(--text-xl);
  font-weight: 700;
  margin-bottom: var(--spacing-3);
  color: var(--color-dark);
}

.card-text {
  color: var(--color-gray-600);
  margin-bottom: var(--spacing-4);
}

/* Vehicle Card Specific */
.vehicle-card {
  position: relative;
}

.vehicle-card-badge {
  position: absolute;
  top: var(--spacing-4);
  right: var(--spacing-4);
  background: var(--color-secondary);
  color: var(--color-white);
  padding: var(--spacing-2) var(--spacing-4);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: 600;
  z-index: 10;
}

.vehicle-specs {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-3);
  margin-top: var(--spacing-4);
  padding-top: var(--spacing-4);
  border-top: 1px solid var(--color-gray-300);
}

.vehicle-spec {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-1);
}

.vehicle-spec-label {
  font-size: var(--text-xs);
  color: var(--color-gray-500);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.vehicle-spec-value {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-dark);
}

.vehicle-price {
  font-size: var(--text-3xl);
  font-weight: 800;
  color: var(--color-primary);
  margin: var(--spacing-4) 0;
}

/* ============================================
   FORMS
   ============================================ */
.form-group {
  margin-bottom: var(--spacing-5);
}

.form-label {
  display: block;
  font-weight: 600;
  color: var(--color-dark);
  margin-bottom: var(--spacing-2);
  font-size: var(--text-sm);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: var(--spacing-3) var(--spacing-4);
  font-family: var(--font-primary);
  font-size: var(--text-base);
  border: 2px solid var(--color-gray-300);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  background: var(--color-white);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(30, 58, 138, 0.1);
}

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

.form-input.border-red-500 {
  border-color: var(--color-error);
}

.error-message {
  color: var(--color-error);
  font-size: var(--text-sm);
  margin-top: var(--spacing-1);
}

/* ============================================
   GRID LAYOUTS
   ============================================ */
.grid {
  display: grid;
  gap: var(--spacing-6);
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.grid-4 {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

/* ============================================
   FOOTER
   ============================================ */
.site-footer {
  background: linear-gradient(135deg, var(--color-dark) 0%, var(--color-gray-900) 100%);
  color: var(--color-gray-400);
  padding: var(--spacing-12) 0 var(--spacing-6);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-8);
  margin-bottom: var(--spacing-8);
}

.footer-section h4 {
  color: var(--color-white);
  font-size: var(--text-lg);
  margin-bottom: var(--spacing-4);
}

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

.footer-links li {
  margin-bottom: var(--spacing-2);
}

.footer-links a {
  color: var(--color-gray-400);
  transition: color var(--transition-fast);
}

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

.footer-bottom {
  border-top: 1px solid var(--color-gray-800);
  padding-top: var(--spacing-6);
  text-align: center;
  color: var(--color-gray-500);
  font-size: var(--text-sm);
}

/* ============================================
   BREADCRUMBS
   ============================================ */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  padding: var(--spacing-4) 0;
  font-size: var(--text-sm);
  color: var(--color-gray-600);
}

.breadcrumb-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
}

.breadcrumb-separator {
  color: var(--color-gray-400);
}

.breadcrumb-item.active {
  color: var(--color-primary);
  font-weight: 600;
}

/* ============================================
   BADGES & TAGS
   ============================================ */
.badge {
  display: inline-flex;
  align-items: center;
  padding: var(--spacing-1) var(--spacing-3);
  font-size: var(--text-xs);
  font-weight: 600;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

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

.badge-secondary {
  background: var(--color-secondary);
  color: var(--color-white);
}

.badge-success {
  background: var(--color-success);
  color: var(--color-white);
}

/* ============================================
   ANIMATIONS
   ============================================ */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideIn {
  from {
    transform: translateX(-100%);
  }
  to {
    transform: translateX(0);
  }
}

.fade-in {
  animation: fadeIn 0.6s ease-out;
}

.slide-in {
  animation: slideIn 0.5s ease-out;
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */
@media (max-width: 1024px) {
  :root {
    --text-6xl: 3rem;
    --text-5xl: 2.5rem;
    --text-4xl: 2rem;
  }
  
  .grid-4 {
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  }
}

@media (max-width: 768px) {
  :root {
    --text-6xl: 2.5rem;
    --text-5xl: 2rem;
    --text-4xl: 1.75rem;
    --spacing-16: 3rem;
    --spacing-20: 4rem;
  }
  
  .nav-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-gray-900);
    flex-direction: column;
    padding: var(--spacing-4);
    gap: var(--spacing-2);
    box-shadow: var(--shadow-lg);
  }
  
  .nav-menu.active {
    display: flex;
  }
  
  .mobile-menu-toggle {
    display: block;
  }
  
  .hero-cta {
    flex-direction: column;
  }
  
  .btn {
    width: 100%;
  }
  
  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--spacing-3);
  }
  
  .hero h1 {
    font-size: var(--text-4xl);
  }
  
  .hero p {
    font-size: var(--text-base);
  }
}

/* ============================================
   UTILITY CLASSES
   ============================================ */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-4 { margin-top: var(--spacing-4); }
.mt-6 { margin-top: var(--spacing-6); }
.mt-8 { margin-top: var(--spacing-8); }
.mb-4 { margin-bottom: var(--spacing-4); }
.mb-6 { margin-bottom: var(--spacing-6); }
.mb-8 { margin-bottom: var(--spacing-8); }

.hidden { display: none; }
.flex { display: flex; }
.block { display: block; }
.inline-block { display: inline-block; }

.gap-4 { gap: var(--spacing-4); }
.gap-6 { gap: var(--spacing-6); }

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

.w-full { width: 100%; }
.h-full { height: 100%; }

/* ============================================
   PRINT STYLES
   ============================================ */
@media print {
  .site-header,
  .site-footer,
  .btn,
  .mobile-menu-toggle {
    display: none;
  }
  
  body {
    font-size: 12pt;
    color: #000;
  }
  
  a {
    text-decoration: underline;
  }
}