/* chamise5ja.corridor8.co.uk - Main stylesheet
   Modern urban corridor identity | Clean, fast, semantic */

:root {
  --color-navy: #0d1b2a;
  --color-charcoal: #1b263b;
  --color-slate: #415a77;
  --color-gold: #c9a227;
  --color-gold-light: #e6c84a;
  --color-white: #f8f9fa;
  --color-offwhite: #e9ecef;
  --font-sans: 'Segoe UI', system-ui, -apple-system, sans-serif;
  --font-display: 'Georgia', 'Times New Roman', serif;
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --radius: 6px;
  --shadow: 0 4px 20px rgba(0,0,0,0.08);
  --transition: 0.2s ease;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-charcoal);
  background: var(--color-white);
}

img { max-width: 100%; height: auto; display: block; }
img[loading="lazy"] { content-visibility: auto; }
a { color: var(--color-slate); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--color-gold); }
a:focus-visible { outline: 2px solid var(--color-gold); outline-offset: 2px; }

/* Layout */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(13, 27, 42, 0.96);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(201, 162, 39, 0.15);
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md) var(--space-xl);
  max-width: 1200px;
  margin: 0 auto;
}
.logo-link {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  color: var(--color-white);
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: 0.02em;
}
.logo-link:hover { color: var(--color-gold-light); }
.logo-img { height: 40px; width: auto; }

.nav-main { display: flex; gap: var(--space-lg); flex-wrap: wrap; }
.nav-main a {
  color: var(--color-offwhite);
  font-size: 0.95rem;
}
.nav-main a:hover { color: var(--color-gold-light); }

/* Hero */
.hero {
  position: relative;
  min-height: 70vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: var(--color-white);
  background: var(--color-navy) linear-gradient(180deg, rgba(13,27,42,0.7) 0%, rgba(27,38,59,0.85) 100%);
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  object-fit: cover;
  width: 100%;
  height: 100%;
  z-index: 0;
}
.hero .overlay { position: absolute; inset: 0; background: linear-gradient(180deg, rgba(13,27,42,0.6) 0%, rgba(13,27,42,0.85) 100%); z-index: 1; }
.hero .wrap { position: relative; z-index: 2; padding: var(--space-3xl) var(--space-xl); max-width: 800px; margin: 0 auto; }
.hero h1 { font-size: clamp(2rem, 5vw, 3rem); margin: 0 0 var(--space-md); font-weight: 700; letter-spacing: 0.02em; line-height: 1.2; }
.hero .tagline { font-size: 1.15rem; opacity: 0.95; margin-bottom: var(--space-xl); }
.hero .cta { display: inline-block; padding: var(--space-md) var(--space-xl); background: var(--color-gold); color: var(--color-navy); font-weight: 600; border-radius: var(--radius); transition: background var(--transition), transform var(--transition); }
.hero .cta:hover { background: var(--color-gold-light); transform: translateY(-2px); }

/* Sections */
section { padding: var(--space-3xl) var(--space-xl); max-width: 1200px; margin: 0 auto; }
section h2 { font-size: 1.75rem; color: var(--color-navy); margin: 0 0 var(--space-lg); padding-bottom: var(--space-sm); border-bottom: 2px solid var(--color-gold); }
.section-id { font-size: 0.85rem; color: var(--color-slate); margin-bottom: var(--space-xs); text-transform: uppercase; letter-spacing: 0.08em; }

/* Cards */
.card-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: var(--space-xl); }
.card {
  background: var(--color-white);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition);
}
.card:hover { transform: translateY(-4px); box-shadow: 0 8px 30px rgba(0,0,0,0.12); }
.card img { width: 100%; aspect-ratio: 16/10; object-fit: cover; }
.card-body { padding: var(--space-lg); }
.card h3 { margin: 0 0 var(--space-sm); font-size: 1.15rem; color: var(--color-navy); }
.card p { margin: 0; font-size: 0.95rem; color: var(--color-slate); }

/* Page banner (subpages) */
.page-banner {
  position: relative;
  height: 320px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: var(--color-white);
  background: var(--color-charcoal);
  overflow: hidden;
}
.page-banner img { position: absolute; inset: 0; object-fit: cover; width: 100%; height: 100%; }
.page-banner .overlay { position: absolute; inset: 0; background: rgba(13,27,42,0.65); }
.page-banner .wrap { position: relative; z-index: 2; padding: var(--space-xl); }
.page-banner h1 { font-size: clamp(1.75rem, 4vw, 2.5rem); margin: 0 0 var(--space-sm); }
.breadcrumb { font-size: 0.9rem; margin: 0; opacity: 0.9; }
.breadcrumb a { color: var(--color-gold-light); }
.breadcrumb span { margin: 0 0.35em; opacity: 0.7; }

/* Footer */
.site-footer {
  background: var(--color-navy);
  color: var(--color-offwhite);
  padding: var(--space-2xl) var(--space-xl);
  margin-top: var(--space-3xl);
}
.site-footer .wrap { max-width: 1200px; margin: 0 auto; display: flex; flex-wrap: wrap; justify-content: space-between; gap: var(--space-xl); }
.site-footer a { color: var(--color-gold-light); }
.site-footer a:hover { color: var(--color-white); }
.footer-nav { display: flex; gap: var(--space-lg); }
.copyright { font-size: 0.9rem; opacity: 0.85; }

/* Utility */
.wrap { max-width: 1200px; margin: 0 auto; padding-left: var(--space-xl); padding-right: var(--space-xl); }
.visually-hidden { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }

@media (max-width: 768px) {
  .site-header .wrap { flex-direction: column; gap: var(--space-md); text-align: center; }
  .nav-main { justify-content: center; }
  .hero { min-height: 60vh; }
  .page-banner { height: 260px; }
}