/*
  RD SUPPORT — Rohan Motors Limited
  Global styles: responsive, accessible, high-contrast
*/

:root {
  --bg: #ffffff;
  --text: #0f172a; /* slate-900 */
  --muted: #475569; /* slate-600 */
  --border: #e2e8f0; /* slate-200 */
  --primary: #d32f2f; /* automotive red */
  --primary-600: #b71c1c;
  --accent: #0ea5e9; /* sky-500 */
  --surface: #f8fafc; /* slate-50 */
  --focus: #fb923c; /* orange-400 */

  --radius: 12px;
  --shadow-sm: 0 1px 2px rgba(16,24,40,0.06);
  --shadow-md: 0 4px 12px rgba(16,24,40,0.08);

  --container: 1200px;
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-7: 1.75rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
}

html { box-sizing: border-box; }
*, *::before, *::after { box-sizing: inherit; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen,
    Ubuntu, Cantarell, "Fira Sans", "Droid Sans", "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

/* Focus visibility */
:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
  border-radius: 6px;
}

/* Layout */
.container { max-width: var(--container); margin: 0 auto; padding: 0 var(--space-4); }
.section { padding: var(--space-12) 0; }
.section-sm { padding: var(--space-8) 0; }
.surface { background: var(--surface); }

/* Header */
.site-header { position: sticky; top: 0; z-index: 50; background: rgba(255,255,255,0.9); backdrop-filter: blur(6px); border-bottom: 1px solid var(--border); }
.nav { display: flex; align-items: center; justify-content: space-between; min-height: 64px; }
.brand { display: flex; align-items: center; gap: var(--space-3); font-weight: 700; letter-spacing: 0.2px; color: var(--text); }
.brand .logo { width: 28px; height: 28px; display: inline-block; }
.nav-links { display: flex; gap: var(--space-6); align-items: center; }
.nav-links a { color: var(--text); font-weight: 600; }
.nav-links a.active { color: var(--primary); }
.menu-toggle { display: none; background: none; border: 1px solid var(--border); padding: var(--space-2) var(--space-3); border-radius: 8px; }
.menu-toggle svg { width: 22px; height: 22px; }

/* Mobile nav */
@media (max-width: 820px) {
  .menu-toggle { display: inline-flex; align-items: center; justify-content: center; }
  .nav-links { position: absolute; left: 0; right: 0; top: 64px; background: #fff; border-bottom: 1px solid var(--border); flex-direction: column; gap: 0; display: none; }
  .nav-links a { width: 100%; padding: var(--space-4) var(--space-6); border-top: 1px solid var(--border); }
  body.nav-open .nav-links { display: flex; }
}

/* Hero */
.hero { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: var(--space-8); align-items: center; }
.hero img { border-radius: var(--radius); box-shadow: var(--shadow-md); }
.eyebrow { color: var(--primary); text-transform: uppercase; font-weight: 700; letter-spacing: 0.08em; font-size: 0.9rem; }
.hero h1 { font-size: clamp(1.8rem, 2.8vw + 1rem, 3rem); line-height: 1.2; margin: var(--space-4) 0 var(--space-3); }
.hero p { color: var(--muted); font-size: 1.05rem; }
.cta-row { display: flex; gap: var(--space-4); flex-wrap: wrap; margin-top: var(--space-6); }

@media (max-width: 980px) { .hero { grid-template-columns: 1fr; } }

/* Buttons */
.btn { display: inline-flex; align-items: center; gap: var(--space-3); border: 1px solid transparent; padding: 0.75rem 1rem; border-radius: 10px; font-weight: 700; cursor: pointer; transition: transform 0.04s ease, box-shadow 0.2s ease, background 0.2s ease; }
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--primary); color: #fff; box-shadow: var(--shadow-sm); }
.btn-primary:hover { background: var(--primary-600); }
.btn-outline { background: #fff; border-color: var(--border); color: var(--text); }
.btn-outline:hover { border-color: var(--muted); }

/* Cards & grids */
.grid { display: grid; gap: var(--space-6); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 980px) { .grid-3, .grid-4 { grid-template-columns: 1fr 1fr; } }
@media (max-width: 640px) { .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; } }

.card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow-sm); overflow: hidden; display: flex; flex-direction: column; }
.card img { width: 100%; height: 200px; object-fit: cover; }
.card-body { padding: var(--space-5); }
.card h3 { margin: 0 0 var(--space-3); font-size: 1.1rem; }
.card p { color: var(--muted); margin: 0; }

/* Feature list */
.features { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-6); }
@media (max-width: 980px) { .features { grid-template-columns: 1fr 1fr; } }
@media (max-width: 640px) { .features { grid-template-columns: 1fr; } }
.feature { display: flex; gap: var(--space-4); padding: var(--space-5); background: #fff; border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow-sm); }
.feature-icon { width: 44px; height: 44px; background: var(--surface); border-radius: 10px; display: inline-flex; align-items: center; justify-content: center; }
.feature p { margin: 0; color: var(--muted); }

/* Trust banner */
.trust { display: grid; grid-template-columns: 1fr 1.2fr; gap: var(--space-8); align-items: center; }
@media (max-width: 980px) { .trust { grid-template-columns: 1fr; } }
.trust img { border-radius: var(--radius); }
.trust .stat { font-size: clamp(1.6rem, 2.2vw + 1rem, 2.2rem); font-weight: 800; color: var(--primary); }

/* CTA band */
.cta-band { background: linear-gradient(135deg, #111 0%, #1f2937 100%); color: #fff; border-radius: var(--radius); padding: var(--space-10); display: grid; grid-template-columns: 1fr auto; gap: var(--space-6); align-items: center; box-shadow: var(--shadow-md); }
@media (max-width: 820px) { .cta-band { grid-template-columns: 1fr; text-align: center; } }
.cta-band .cta-title { font-size: clamp(1.4rem, 2vw + 1rem, 2rem); margin: 0; }

/* Forms */
form { display: grid; gap: var(--space-5); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-5); }
@media (max-width: 820px) { .form-row { grid-template-columns: 1fr; } }
label { font-weight: 600; display: block; margin-bottom: var(--space-2); }
input, select, textarea { width: 100%; padding: 0.75rem 0.9rem; border-radius: 10px; border: 1px solid var(--border); background: #fff; color: var(--text); }
input:focus, select:focus, textarea:focus { border-color: var(--primary); outline: 3px solid rgba(211, 47, 47, 0.15); }
.help { color: var(--muted); font-size: 0.9rem; }
.error { color: var(--primary); font-size: 0.9rem; }
.checkbox { display: flex; gap: var(--space-3); align-items: flex-start; }

/* Toast */
.toast { position: fixed; right: 16px; bottom: 16px; background: #0a7d34; color: #fff; padding: 0.8rem 1rem; border-radius: 12px; box-shadow: var(--shadow-md); opacity: 0; transform: translateY(8px); transition: all 240ms ease; z-index: 1000; }
.toast.show { opacity: 1; transform: translateY(0); }

/* Footer */
.site-footer { background: #0b1220; color: #e5e7eb; }
.site-footer a { color: #e5e7eb; }
.footer-top { display: grid; grid-template-columns: 1.2fr 1fr 1fr; gap: var(--space-8); padding: var(--space-12) 0; }
@media (max-width: 980px) { .footer-top { grid-template-columns: 1fr; } }
.footer-col h4 { margin: 0 0 var(--space-4); font-size: 1.05rem; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.1); padding: var(--space-6) 0; font-size: 0.95rem; color: #cbd5e1; }

/* Utilities */
.mb-2 { margin-bottom: var(--space-2); }
.mb-3 { margin-bottom: var(--space-3); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-5 { margin-bottom: var(--space-5); }
.mb-6 { margin-bottom: var(--space-6); }
.mb-8 { margin-bottom: var(--space-8); }
.mt-6 { margin-top: var(--space-6); }
.mt-8 { margin-top: var(--space-8); }
.mt-10 { margin-top: var(--space-10); }
.center { text-align: center; }
.muted { color: var(--muted); }
.hide { display: none; }