/* 興達汽車 SAVE認證車 — mobile-first dealership site */
:root {
  --navy: #0b1f3a;
  --navy-2: #132a4a;
  --gold: #c9a227;
  --gold-2: #e0b83a;
  --bg: #f5f7fa;
  --card: #ffffff;
  --text: #1a1a1a;
  --muted: #5a6570;
  --line: #06c755;
  --border: #e2e8f0;
  --radius: 14px;
  --shadow: 0 8px 28px rgba(11, 31, 58, 0.08);
  --max: 1100px;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", system-ui, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
.container { width: min(100% - 2rem, var(--max)); margin-inline: auto; }

/* Header */
.site-header {
  background: var(--navy);
  color: #fff;
  position: sticky;
  top: 0;
  z-index: 50;
  box-shadow: 0 2px 12px rgba(0,0,0,.2);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: .85rem 0;
}
.brand {
  display: flex;
  flex-direction: column;
  gap: .1rem;
}
.brand-name { font-weight: 800; letter-spacing: .02em; font-size: 1.05rem; }
.brand-tag {
  font-size: .72rem;
  color: var(--gold-2);
  font-weight: 600;
}
.nav {
  display: flex;
  flex-wrap: wrap;
  gap: .65rem 1rem;
  align-items: center;
  font-size: .92rem;
}
.nav a { opacity: .9; }
.nav a:hover { color: var(--gold-2); }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .4rem;
  padding: .7rem 1.15rem;
  border-radius: 999px;
  font-weight: 700;
  border: none;
  cursor: pointer;
  transition: transform .15s ease, box-shadow .15s ease, background .15s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn-line {
  background: var(--line);
  color: #fff;
  box-shadow: 0 6px 16px rgba(6,199,85,.28);
}
.btn-primary {
  background: var(--gold);
  color: var(--navy);
}
.btn-outline {
  background: transparent;
  color: #fff;
  border: 1.5px solid rgba(255,255,255,.45);
}
.btn-outline-dark {
  background: transparent;
  color: var(--navy);
  border: 1.5px solid var(--navy);
}

/* Hero */
.hero {
  background:
    linear-gradient(135deg, rgba(11,31,58,.94), rgba(19,42,74,.88)),
    radial-gradient(circle at 20% 20%, rgba(201,162,39,.25), transparent 45%);
  color: #fff;
  padding: 3rem 0 2.6rem;
}
.hero-grid {
  display: grid;
  gap: 1.75rem;
}
@media (min-width: 840px) {
  .hero-grid { grid-template-columns: 1.2fr .8fr; align-items: center; }
}
.hero h1 {
  margin: 0 0 .75rem;
  font-size: clamp(1.6rem, 4vw, 2.35rem);
  line-height: 1.25;
}
.hero p { margin: 0 0 1.2rem; color: rgba(255,255,255,.88); max-width: 36rem; }
.hero-badges {
  display: flex; flex-wrap: wrap; gap: .5rem; margin-bottom: 1.25rem;
}
.badge {
  background: rgba(255,255,255,.1);
  border: 1px solid rgba(255,255,255,.2);
  padding: .35rem .7rem;
  border-radius: 999px;
  font-size: .8rem;
  font-weight: 600;
}
.badge-gold { background: rgba(201,162,39,.2); border-color: var(--gold); color: var(--gold-2); }
.hero-actions { display: flex; flex-wrap: wrap; gap: .7rem; }
.hero-card {
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.15);
  border-radius: var(--radius);
  padding: 1.1rem 1.2rem;
  backdrop-filter: blur(6px);
}
.hero-card h2 { margin: 0 0 .6rem; font-size: 1rem; color: var(--gold-2); }
.hero-card dl { margin: 0; display: grid; gap: .55rem; }
.hero-card dt { font-size: .75rem; opacity: .7; }
.hero-card dd { margin: 0; font-weight: 650; }

/* Sections */
.section { padding: 2.4rem 0; }
.section-head {
  display: flex; justify-content: space-between; align-items: end;
  gap: 1rem; margin-bottom: 1.25rem; flex-wrap: wrap;
}
.section-head h2 { margin: 0; font-size: 1.35rem; color: var(--navy); }
.section-head p { margin: .25rem 0 0; color: var(--muted); font-size: .92rem; }

/* Cards */
.car-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.1rem;
}
@media (min-width: 640px) { .car-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 960px) { .car-grid { grid-template-columns: repeat(3, 1fr); } }
.car-card {
  background: var(--card);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  transition: transform .15s ease;
}
.car-card:hover { transform: translateY(-3px); }
.car-card .thumb {
  aspect-ratio: 4/3;
  background: #dbe3ee;
  overflow: hidden;
}
.car-card .thumb img {
  width: 100%; height: 100%; object-fit: cover;
}
.car-card .body { padding: 1rem 1.05rem 1.15rem; display: flex; flex-direction: column; gap: .45rem; flex: 1; }
.car-card .meta { color: var(--muted); font-size: .82rem; }
.car-card h3 { margin: 0; font-size: 1.05rem; color: var(--navy); }
.price {
  font-size: 1.25rem;
  font-weight: 800;
  color: #b45309;
}
.price.reserved { color: #b91c1c; }
.pill {
  display: inline-block;
  font-size: .72rem;
  font-weight: 700;
  padding: .2rem .55rem;
  border-radius: 999px;
  background: #eef6ff;
  color: #1e40af;
}
.pill-save { background: #fff7e0; color: #92400e; }
.pill-reserved, .pill-sold { background: #fee2e2; color: #991b1b; }
.status-banner {
  background: #fef2f2;
  border: 1px solid #fecaca;
  color: #991b1b;
  border-radius: 12px;
  padding: .85rem 1rem;
  margin: 0 0 1rem;
}
.status-banner strong {
  display: block;
  font-size: 1.15rem;
  letter-spacing: .06em;
}
.status-banner p {
  margin: .25rem 0 0;
  color: #7f1d1d;
  font-size: .9rem;
}
.former-price {
  margin: 0 0 .8rem;
  color: var(--muted);
  font-size: .85rem;
}
.card-actions { margin-top: auto; padding-top: .55rem; display: flex; gap: .5rem; flex-wrap: wrap; }
.card-actions .btn { font-size: .85rem; padding: .55rem .9rem; }

/* Filters */
.filters {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem;
  margin-bottom: 1.25rem;
  display: grid;
  gap: .85rem;
  box-shadow: var(--shadow);
}
@media (min-width: 720px) {
  .filters { grid-template-columns: repeat(4, 1fr); align-items: end; }
}
.filters label {
  display: grid; gap: .35rem; font-size: .8rem; color: var(--muted); font-weight: 600;
}
.filters select, .filters input {
  width: 100%;
  padding: .65rem .7rem;
  border-radius: 10px;
  border: 1px solid var(--border);
  font: inherit;
  background: #fff;
}
.filter-count { color: var(--muted); font-size: .9rem; margin-bottom: .8rem; }
.hidden-card { display: none !important; }

/* Car detail */
.detail-hero {
  background: var(--card);
  border-bottom: 1px solid var(--border);
  padding: 1.5rem 0 1.8rem;
}
.breadcrumb { font-size: .85rem; color: var(--muted); margin-bottom: .8rem; }
.breadcrumb a:hover { color: var(--gold); }
.detail-layout {
  display: grid;
  gap: 1.4rem;
}
@media (min-width: 900px) {
  .detail-layout { grid-template-columns: 1.35fr .75fr; align-items: start; }
}
.gallery {
  background: var(--card);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}
.gallery-main {
  aspect-ratio: 4/3;
  background: #dbe3ee;
}
.gallery-main img { width: 100%; height: 100%; object-fit: cover; }
.gallery-thumbs {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: .4rem;
  padding: .55rem;
}
@media (min-width: 600px) { .gallery-thumbs { grid-template-columns: repeat(8, 1fr); } }
.gallery-thumbs button {
  border: 2px solid transparent;
  padding: 0;
  border-radius: 8px;
  overflow: hidden;
  cursor: pointer;
  background: none;
  aspect-ratio: 1;
}
.gallery-thumbs button.active,
.gallery-thumbs button:hover { border-color: var(--gold); }
.gallery-thumbs img { width: 100%; height: 100%; object-fit: cover; }
.buy-box {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.2rem;
  box-shadow: var(--shadow);
  position: sticky;
  top: 4.5rem;
}
.buy-box h1 { margin: 0 0 .4rem; font-size: 1.4rem; color: var(--navy); }
.specs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: .7rem;
  margin: 1rem 0;
}
.spec {
  background: var(--bg);
  border-radius: 10px;
  padding: .65rem .75rem;
}
.spec span { display: block; font-size: .72rem; color: var(--muted); }
.spec strong { font-size: .95rem; }
.list-block {
  background: var(--card);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  padding: 1.15rem 1.25rem;
  margin-top: 1rem;
  box-shadow: var(--shadow);
}
.list-block h2 { margin: 0 0 .7rem; font-size: 1.05rem; color: var(--navy); }
.chips { display: flex; flex-wrap: wrap; gap: .45rem; }
.chip {
  background: #eef2ff;
  color: #312e81;
  padding: .35rem .65rem;
  border-radius: 999px;
  font-size: .82rem;
  font-weight: 600;
}
.chip-gold { background: #fff7e0; color: #92400e; }

/* About / trust */
.trust-grid {
  display: grid;
  gap: 1rem;
}
@media (min-width: 720px) { .trust-grid { grid-template-columns: repeat(3, 1fr); } }
.trust-card {
  background: var(--card);
  border-radius: var(--radius);
  padding: 1.2rem;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}
.trust-card h3 { margin: 0 0 .45rem; color: var(--navy); font-size: 1.05rem; }
.trust-card p { margin: 0; color: var(--muted); font-size: .92rem; }

.cta-band {
  background: linear-gradient(120deg, var(--navy), var(--navy-2));
  color: #fff;
  padding: 2rem 0;
  margin-top: 1rem;
}
.cta-band .inner {
  display: flex; flex-wrap: wrap; gap: 1rem; justify-content: space-between; align-items: center;
}
.cta-band h2 { margin: 0 0 .3rem; font-size: 1.25rem; }
.cta-band p { margin: 0; opacity: .85; }

/* Footer */
.site-footer {
  background: #071526;
  color: rgba(255,255,255,.82);
  padding: 2rem 0 1.4rem;
  margin-top: 0;
  font-size: .9rem;
}
.footer-grid {
  display: grid;
  gap: 1.2rem;
}
@media (min-width: 720px) { .footer-grid { grid-template-columns: 1.4fr 1fr 1fr; } }
.site-footer h3 { margin: 0 0 .5rem; color: #fff; font-size: 1rem; }
.site-footer a:hover { color: var(--gold-2); }
.footer-bottom {
  margin-top: 1.4rem;
  padding-top: 1rem;
  border-top: 1px solid rgba(255,255,255,.12);
  font-size: .8rem;
  opacity: .7;
}
.prose { max-width: 42rem; color: var(--muted); }
.prose p { margin: 0 0 .9rem; }
.empty-state {
  text-align: center;
  padding: 2.5rem 1rem;
  color: var(--muted);
  background: var(--card);
  border-radius: var(--radius);
  border: 1px dashed var(--border);
}