:root {
  --navy: #0f1b2d;
  --navy-light: #16283f;
  --chrome: #c9d3dc;
  --chrome-dim: #8a97a6;
  --steel: #2a3b52;
  --red: #d6472b;
  --red-dark: #b23a22;
  --white: #f4f6f8;
  --success: #3f9142;
  --font-display: 'Oswald', 'Arial Narrow', sans-serif;
  --font-body: 'Inter', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', 'Courier New', monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--navy);
  color: var(--white);
  font-family: var(--font-body);
  line-height: 1.5;
}
body.light-mode {
  --chrome: #4a5563;
  --chrome-dim: #6b7785;
  background: #eef1f4;
  color: #16202c;
}
body.light-mode .site-header,
body.light-mode .vehicle-card,
body.light-mode .window-sticker,
body.light-mode .form-card,
body.light-mode footer {
  background: #ffffff;
  color: #16202c;
  border-color: #d7dde3;
}
body.light-mode table:not(.admin-shell table) {
  background: #ffffff;
  color: #16202c;
  border-color: #d7dde3;
}
body.light-mode table:not(.admin-shell table) th,
body.light-mode table:not(.admin-shell table) td {
  border-color: #e6e9ec;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  text-transform: uppercase;
  letter-spacing: 0.02em;
  margin: 0 0 0.5em;
}

.container { max-width: 1180px; margin: 0 auto; padding: 0 20px; }

/* Header */
.site-header {
  background: var(--navy-light);
  border-bottom: 3px solid var(--red);
  position: sticky;
  top: 0;
  z-index: 50;
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.brand { font-family: var(--font-display); font-size: 1.4rem; font-weight: 700; letter-spacing: 0.04em; }
.brand span { color: var(--red); }
.main-nav { display: flex; gap: 28px; align-items: center; }
.main-nav a {
  font-family: var(--font-display);
  font-size: 0.92rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--chrome);
  transition: color 0.15s;
}
.main-nav a:hover, .main-nav a:focus-visible { color: var(--red); }
.theme-toggle {
  background: none; border: 1px solid var(--chrome-dim); color: var(--chrome);
  border-radius: 4px; padding: 6px 10px; cursor: pointer; font-family: var(--font-body);
}

/* Mobile hamburger + dropdown nav */
.mobile-nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: none;
  border: 1px solid var(--steel);
  border-radius: 4px;
  cursor: pointer;
  padding: 0;
}
.mobile-nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  margin: 0 auto;
  background: var(--chrome);
  transition: transform 0.2s, opacity 0.2s;
}
.mobile-nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.mobile-nav-toggle.open span:nth-child(2) { opacity: 0; }
.mobile-nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.mobile-nav {
  display: none;
  flex-direction: column;
  background: var(--navy-light);
  border-top: 1px solid var(--steel);
  padding: 8px 20px 16px;
}
.mobile-nav.open { display: flex; }
.mobile-nav a {
  padding: 12px 0;
  border-bottom: 1px solid var(--steel);
  color: var(--chrome);
  font-family: var(--font-display);
  text-transform: uppercase;
  font-size: 0.9rem;
  letter-spacing: 0.04em;
}
.mobile-nav a:last-of-type { border-bottom: none; }
.mobile-nav .theme-toggle { text-align: left; width: fit-content; }

/* Buttons */
.btn {
  display: inline-block;
  font-family: var(--font-display);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 14px 28px;
  border-radius: 3px;
  border: 2px solid transparent;
  cursor: pointer;
  font-size: 0.95rem;
  transition: transform 0.12s, background 0.15s, border-color 0.15s;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--red); color: var(--white); }
.btn-primary:hover { background: var(--red-dark); }
.btn-outline { background: transparent; border-color: var(--chrome); color: var(--chrome); }
.btn-outline:hover { border-color: var(--red); color: var(--red); }
body.light-mode .btn-outline { border-color: #5a6674; color: #3a4552; }
body.light-mode .text-muted, body.light-mode .section-alt p { color: #4a5563 !important; }
.btn-block { display: block; width: 100%; text-align: center; }
.btn-sm { padding: 8px 16px; font-size: 0.8rem; }

/* Hero */
.hero {
  position: relative;
  min-height: 950px;
  display: flex;
  align-items: center;
  background: linear-gradient(180deg, rgba(6,12,22,0.72) 0%, rgba(6,12,22,0.94) 100%), var(--navy);
  background-size: cover;
  background-position: center;
  color: #f4f6f8;
}
.hero, body.light-mode .hero { color: #f4f6f8; }
.hero .btn-outline, body.light-mode .hero .btn-outline { border-color: #ffffff; color: #ffffff; }
.hero .btn-outline:hover, body.light-mode .hero .btn-outline:hover { border-color: var(--red); color: var(--red); }
.hero-content {
  max-width: 620px;
  background: rgba(4,9,17,0.25);
  backdrop-filter: blur(1.5px);
  padding: 32px;
  border-radius: 8px;
}
.hero-eyebrow {
  color: var(--red);
  font-family: var(--font-display);
  letter-spacing: 0.12em;
  font-size: 0.85rem;
  text-transform: uppercase;
  text-shadow: 0 1px 6px rgba(0,0,0,0.9), 0 0 14px rgba(0,0,0,0.6);
}
.hero h1, body.light-mode .hero h1 {
  color: #ffffff;
  font-size: 3.2rem;
  line-height: 1.05;
  margin: 12px 0 20px;
  text-shadow: 0 2px 14px rgba(0,0,0,0.9), 0 0 24px rgba(0,0,0,0.6);
}
.hero p, body.light-mode .hero p { color: #f0f2f4 !important; text-shadow: 0 1px 6px rgba(0,0,0,0.9), 0 0 14px rgba(0,0,0,0.6); }
.hero-actions { display: flex; gap: 16px; margin-top: 8px; flex-wrap: wrap; }

/* Section */
.section { padding: 64px 0; }
.section-alt { background: var(--navy-light); }
body.light-mode .section-alt { background: #e4e9ee; }
.section-header { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 32px; }
.section-header h2 { font-size: 1.9rem; margin: 0; }
.eyebrow { color: var(--red); font-size: 0.8rem; letter-spacing: 0.12em; font-family: var(--font-display); }

/* Vehicle grid / cards */
.vehicle-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 24px; }
.vehicle-card {
  background: var(--navy-light);
  border: 1px solid var(--steel);
  border-radius: 6px;
  overflow: hidden;
  transition: border-color 0.15s, transform 0.15s;
}
.vehicle-card:hover { border-color: var(--red); transform: translateY(-3px); }
.vehicle-card img { aspect-ratio: 4/3; object-fit: cover; width: 100%; background: var(--steel); }
.vehicle-card-body { padding: 16px; }
.vehicle-card-title { font-family: var(--font-display); font-size: 1.1rem; text-transform: none; margin: 0 0 4px; }
.vehicle-card-trim { color: var(--chrome-dim); font-size: 0.85rem; margin-bottom: 10px; }
.vehicle-card-price { color: var(--red); font-family: var(--font-display); font-size: 1.3rem; }
.vehicle-card-meta { display: flex; gap: 12px; font-size: 0.82rem; color: var(--chrome-dim); margin-top: 8px; }
.badge {
  display: inline-block; font-family: var(--font-display); font-size: 0.7rem;
  text-transform: uppercase; letter-spacing: 0.06em; padding: 4px 10px; border-radius: 3px;
}
.badge-featured { background: var(--red); color: white; }
.badge-sold { background: var(--chrome-dim); color: var(--navy); }

/* Filters */
.filter-bar {
  background: var(--navy-light);
  border: 1px solid var(--steel);
  border-radius: 6px;
  padding: 20px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 14px;
  margin-bottom: 32px;
  align-items: end;
}
.filter-bar label { display: block; font-size: 0.75rem; color: var(--chrome-dim); margin-bottom: 4px; text-transform: uppercase; letter-spacing: 0.04em; }

/* Form controls */
input, select, textarea {
  width: 100%;
  background: var(--navy);
  border: 1px solid var(--steel);
  color: var(--white);
  padding: 10px 12px;
  border-radius: 4px;
  font-family: var(--font-body);
  font-size: 0.95rem;
}
input:focus, select:focus, textarea:focus {
  outline: 2px solid var(--red);
  outline-offset: 1px;
  border-color: var(--red);
}
.form-row { margin-bottom: 16px; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-card {
  background: var(--navy-light);
  border: 1px solid var(--steel);
  border-radius: 6px;
  padding: 28px;
  max-width: 640px;
}

/* Window sticker (vehicle spec block signature element) */
.window-sticker {
  background: var(--white);
  color: #16202c;
  border: 2px solid var(--navy);
  border-radius: 4px;
  font-family: var(--font-mono);
  overflow: hidden;
}
.window-sticker-head {
  background: var(--navy);
  color: white;
  padding: 12px 18px;
  font-family: var(--font-display);
  display: flex;
  justify-content: space-between;
  align-items: center;
  letter-spacing: 0.04em;
}
.window-sticker-head .stock { color: var(--chrome-dim); font-family: var(--font-mono); font-size: 0.8rem; }
.sticker-price {
  text-align: center;
  padding: 18px;
  border-bottom: 2px dashed var(--chrome-dim);
  background: #fafcfd;
}
.sticker-price .amount { font-family: var(--font-display); font-size: 2.4rem; color: var(--red); }
.sticker-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  font-size: 0.85rem;
}
.sticker-grid dt { color: #6b7785; padding: 8px 14px 0; text-transform: uppercase; font-size: 0.7rem; letter-spacing: 0.04em; }
.sticker-grid dd { margin: 0; padding: 0 14px 8px; font-weight: 600; border-bottom: 1px solid #e6e9ec; }

.sticker-rows { padding: 4px 0; }
.sticker-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 18px;
  border-bottom: 1px solid #e6e9ec;
}
.sticker-row:last-child { border-bottom: none; }
.sticker-row dt { color: #6b7785; text-transform: uppercase; font-size: 0.68rem; letter-spacing: 0.04em; margin: 0 0 3px; }
.sticker-row dd { margin: 0; font-weight: 600; font-size: 0.92rem; }
.sticker-icon {
  width: 34px;
  height: 34px;
  flex-shrink: 0;
  border-radius: 50%;
  background: var(--red);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
}
.sticker-icon svg { width: 18px; height: 18px; }

/* Gallery */
.gallery-main { border-radius: 6px; overflow: hidden; margin-bottom: 10px; background: var(--steel); aspect-ratio: 4/3;}
.gallery-main img { width: 100%; height: 100%; object-fit: cover; }
.gallery-thumbs { display: flex; gap: 8px; overflow-x: auto; padding-bottom: 4px; }
.gallery-thumbs img { width: 84px; height: 60px; object-fit: cover; border-radius: 4px; cursor: pointer; border: 2px solid transparent; }
.gallery-thumbs img.active { border-color: var(--red); }

/* Detail actions */
.detail-actions { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 20px; }

/* Features list */
.feature-list { columns: 2; gap: 24px; list-style: none; padding: 0; }
.feature-list li { padding: 6px 0; border-bottom: 1px solid var(--steel); font-size: 0.9rem; }
.feature-list li::before { content: "\2713  "; color: var(--red); }

/* Footer */
footer {
  background: var(--navy-light);
  border-top: 1px solid var(--steel);
  padding: 40px 0;
  margin-top: 60px;
  color: var(--chrome-dim);
  font-size: 0.9rem;
}
footer .container { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 20px; }

/* Alerts */
.alert { padding: 14px 18px; border-radius: 4px; margin-bottom: 20px; font-size: 0.9rem; }
.alert-success { background: rgba(63,145,66,0.15); border: 1px solid var(--success); color: #8fd591; }
.alert-error { background: rgba(214,71,43,0.15); border: 1px solid var(--red); color: #f0a394; }

/* Admin */
.admin-shell { display: flex; min-height: 100vh; }
.admin-sidebar { width: 220px; background: var(--navy-light); border-right: 1px solid var(--steel); padding: 24px 0; flex-shrink: 0; }
.admin-sidebar a { display: block; padding: 12px 24px; color: var(--chrome); font-family: var(--font-display); text-transform: uppercase; font-size: 0.85rem; letter-spacing: 0.04em; }
.admin-sidebar a:hover, .admin-sidebar a.active { background: var(--steel); color: var(--red); }
.admin-main { flex: 1; padding: 32px 40px; }
.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 18px; margin-bottom: 32px; }
.stat-card { background: var(--navy-light); border: 1px solid var(--steel); border-radius: 6px; padding: 20px; }
.stat-card .value { font-family: var(--font-display); font-size: 2rem; color: var(--red); }
.stat-card .label { color: var(--chrome-dim); font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.04em; }
table { width: 100%; border-collapse: collapse; background: var(--navy-light); border: 1px solid var(--steel); border-radius: 6px; overflow: hidden; }
th, td { text-align: left; padding: 12px 14px; border-bottom: 1px solid var(--steel); font-size: 0.9rem; }
th { text-transform: uppercase; font-size: 0.75rem; letter-spacing: 0.04em; color: var(--chrome-dim); }
.login-shell { min-height: 100vh; display: flex; align-items: center; justify-content: center; }

/* Photo upload preview grid */
.photo-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(100px, 1fr)); gap: 10px; margin-top: 10px; }
.photo-grid .photo-item { position: relative; }
.photo-grid img { aspect-ratio: 4/3; object-fit: cover; border-radius: 4px; }
.photo-grid form { position: absolute; top: 4px; right: 4px; }
.photo-grid button { background: var(--red); color: white; border: none; border-radius: 3px; width: 22px; height: 22px; cursor: pointer; line-height: 1; }

@media (max-width: 760px) {
  .main-nav { display: none; }
  .mobile-nav-toggle { display: flex; }
  .hero h1 { font-size: 2.1rem; }
  .hero-content { padding: 18px; max-width: 100%; }
  .form-grid { grid-template-columns: 1fr; }
  .sticker-grid { grid-template-columns: 1fr; }
  .detail-actions { grid-template-columns: 1fr; }
  .admin-shell { flex-direction: column; }
  .admin-sidebar { width: 100%; display: flex; overflow-x: auto; padding: 0; }
  .admin-sidebar a { white-space: nowrap; }
}