/* ============================================
   AutoElite — Main Stylesheet (Modern Light Theme)
   Core reset, variables, typography, utilities
   ============================================ */

/* ——— CSS Reset ——— */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

ul, ol {
  list-style: none;
}

/* ——— CSS Variables — Light Modern Theme ——— */
:root {
  --bg-primary: #ffffff;
  --bg-secondary: #f8f9fa;
  --bg-card: #ffffff;
  --bg-elevated: #f1f3f5;
  --bg-glass: rgba(255, 255, 255, 0.7);

  --accent: #2563eb; /* Blue */
  --accent-light: #60a5fa;
  --accent-hover: #1d4ed8;
  --accent-glow: rgba(37, 99, 235, 0.15);
  
  --accent-secondary: #dc2626; /* Red */

  --text-primary: #111827;
  --text-secondary: #4b5563;
  --text-muted: #9ca3af;

  --success: #10b981;
  --warning: #f59e0b;
  --danger: #dc2626;

  --border: #e5e7eb;
  --border-hover: #d1d5db;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  --shadow-sm: 0 1px 3px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1);

  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --max-width: 1280px;

  --font-body: 'Inter', sans-serif;
  --font-heading: 'Inter', sans-serif;
}

/* ——— Base Styles ——— */
html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  -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;
}

h1 { font-size: 2.5rem; letter-spacing: -0.02em; }
h2 { font-size: 2rem; letter-spacing: -0.01em; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.15rem; }

a {
  color: inherit;
  text-decoration: none;
}

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

/* ——— Layout ——— */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section {
  padding: 5rem 0;
}

.section-header {
  text-align: center;
  margin-bottom: 3rem;
}

.section-title {
  font-size: 2.25rem;
}

.section-subtitle {
  color: var(--text-secondary);
  margin-top: 0.75rem;
  font-size: 1rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* ——— Utility Classes ——— */
.accent-text {
  color: var(--accent);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* ——— Custom Scrollbar ——— */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg-secondary); }
::-webkit-scrollbar-thumb { background: #cbd5e1; border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: #94a3b8; }

/* ——— Selection ——— */
::selection {
  background: var(--accent);
  color: #ffffff;
}

/* ——— Keyframe Animations ——— */
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}
@keyframes spin { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }

/* ——— Scroll Reveal ——— */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}