/* ===================================
   EXECUTIVE CHAUFFEUR - DESIGN SYSTEM
   Premium VTC Website Template
   =================================== */

/* === CSS VARIABLES === */
:root {
  /* Colors - Premium Palette */
  --color-black: #0a0a0a;
  --color-anthracite: #2a2a2a;
  --color-grey-dark: #4a4a4a;
  --color-grey: #8a8a8a;
  --color-grey-light: #e5e5e5;
  --color-white: #ffffff;
  --color-accent-gold: #d4af37;
  --color-accent-navy: #1a2332;
  
  /* Typography */
  --font-serif: 'Playfair Display', serif;
  --font-sans: 'Inter', sans-serif;
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 6rem;
  
  /* Layout */
  --max-width: 1400px;
  --header-height: 80px;
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.15);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.2);
}

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

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

body {
  font-family: var(--font-sans);
  color: var(--color-anthracite);
  background-color: var(--color-white);
  line-height: 1.6;
  overflow-x: hidden;
}

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

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

button {
  border: none;
  background: none;
  cursor: pointer;
  font-family: inherit;
}

/* === TYPOGRAPHY === */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-serif);
  font-weight: 600;
  line-height: 1.2;
  color: var(--color-black);
}

h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  margin-bottom: var(--spacing-md);
}

h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: var(--spacing-md);
}

h3 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  margin-bottom: var(--spacing-sm);
}

p {
  margin-bottom: var(--spacing-sm);
  color: var(--color-grey-dark);
}

.text-accent {
  color: var(--color-accent-gold);
}

.text-center {
  text-align: center;
}

/* === LAYOUT === */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

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

.section-dark {
  background-color: var(--color-black);
  color: var(--color-white);
}

.section-dark h2,
.section-dark h3 {
  color: var(--color-white);
}

.section-dark p {
  color: var(--color-grey-light);
}

.section-grey {
  background-color: #f8f8f8;
}

/* === HEADER === */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background-color: rgba(10, 10, 10, 0.95);
  backdrop-filter: blur(10px);
  z-index: 1000;
  transition: var(--transition-normal);
}

.header-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.logo {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--color-white);
  letter-spacing: 1px;
}

.logo span {
  color: var(--color-accent-gold);
}

.nav-menu {
  display: flex;
  gap: var(--spacing-md);
  list-style: none;
}

.nav-menu a {
  color: var(--color-white);
  font-weight: 500;
  padding: 0.5rem 1rem;
  border-radius: 4px;
  transition: var(--transition-fast);
}

.nav-menu a:hover {
  background-color: rgba(212, 175, 55, 0.1);
  color: var(--color-accent-gold);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  padding: 0.5rem;
}

.nav-toggle span {
  width: 25px;
  height: 2px;
  background-color: var(--color-white);
  transition: var(--transition-fast);
}

/* === BUTTONS === */
.btn {
  display: inline-block;
  padding: 1rem 2.5rem;
  font-weight: 600;
  border-radius: 4px;
  transition: var(--transition-normal);
  text-align: center;
  cursor: pointer;
}

.btn-primary {
  background-color: var(--color-accent-gold);
  color: var(--color-black);
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  background-color: #c9a532;
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

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

.btn-secondary:hover {
  background-color: var(--color-white);
  color: var(--color-black);
}

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

.btn-dark:hover {
  background-color: var(--color-anthracite);
}

/* === HERO === */
.hero {
  position: relative;
  height: 100vh;
  min-height: 600px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  margin-top: var(--header-height);
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: -2;
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(10, 10, 10, 0.8), rgba(26, 35, 50, 0.6));
  z-index: -1;
}

.hero-content {
  text-align: center;
  color: var(--color-white);
  max-width: 900px;
  padding: var(--spacing-md);
  animation: fadeInUp 1s ease;
}

.hero-content h1 {
  color: var(--color-white);
  margin-bottom: var(--spacing-md);
}

.hero-content p {
  font-size: 1.25rem;
  color: var(--color-grey-light);
  margin-bottom: var(--spacing-lg);
}

.hero-cta {
  display: flex;
  gap: var(--spacing-sm);
  justify-content: center;
  flex-wrap: wrap;
}

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

.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));
}

/* === CARDS === */
.card {
  background-color: var(--color-white);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition-normal);
}

.card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}

.card-img {
  width: 100%;
  height: 250px;
  object-fit: cover;
}

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

.card-title {
  font-size: 1.5rem;
  margin-bottom: var(--spacing-sm);
}

.card-text {
  color: var(--color-grey-dark);
  margin-bottom: var(--spacing-sm);
}

/* === FEATURES === */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-lg);
}

.feature-item {
  text-align: center;
  padding: var(--spacing-md);
}

.feature-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto var(--spacing-sm);
  background: linear-gradient(135deg, var(--color-accent-gold), #c9a532);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  color: var(--color-white);
}

.feature-title {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-xs);
}

/* === TESTIMONIALS === */
.testimonial {
  background-color: var(--color-white);
  padding: var(--spacing-md);
  border-radius: 8px;
  box-shadow: var(--shadow-sm);
  position: relative;
}

.testimonial-text {
  font-style: italic;
  margin-bottom: var(--spacing-sm);
  color: var(--color-grey-dark);
}

.testimonial-author {
  font-weight: 600;
  color: var(--color-black);
}

.testimonial-rating {
  color: var(--color-accent-gold);
  margin-bottom: var(--spacing-xs);
}

/* === FOOTER === */
.footer {
  background-color: var(--color-black);
  color: var(--color-white);
  padding: var(--spacing-lg) 0 var(--spacing-md);
}

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

.footer-section h3 {
  color: var(--color-white);
  margin-bottom: var(--spacing-sm);
}

.footer-section p,
.footer-section a {
  color: var(--color-grey-light);
  margin-bottom: var(--spacing-xs);
}

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

.footer-bottom {
  text-align: center;
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--color-anthracite);
  color: var(--color-grey);
}

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

.form-label {
  display: block;
  margin-bottom: var(--spacing-xs);
  font-weight: 500;
  color: var(--color-black);
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: 1rem;
  border: 2px solid var(--color-grey-light);
  border-radius: 4px;
  font-family: inherit;
  font-size: 1rem;
  transition: var(--transition-fast);
}

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

.form-textarea {
  resize: vertical;
  min-height: 150px;
}

/* === ANIMATIONS === */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in-up {
  animation: fadeInUp 0.8s ease;
}

/* === RESPONSIVE === */
@media (max-width: 768px) {
  :root {
    --spacing-lg: 3rem;
    --spacing-xl: 4rem;
  }
  
  .nav-menu {
    position: fixed;
    top: var(--header-height);
    left: -100%;
    width: 100%;
    height: calc(100vh - var(--header-height));
    background-color: var(--color-black);
    flex-direction: column;
    padding: var(--spacing-md);
    transition: var(--transition-normal);
  }
  
  .nav-menu.active {
    left: 0;
  }
  
  .nav-toggle {
    display: flex;
  }
  
  .hero-cta {
    flex-direction: column;
    align-items: center;
  }
  
  .btn {
    width: 100%;
    max-width: 300px;
  }
  
  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--spacing-sm);
  }
  
  h1 {
    font-size: 2rem;
  }
  
  h2 {
    font-size: 1.75rem;
  }
}

/* === UTILITIES === */
.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }
.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }

.text-white { color: var(--color-white); }
.text-gold { color: var(--color-accent-gold); }

.bg-dark { background-color: var(--color-black); }
.bg-light { background-color: #f8f8f8; }