/* ===== 放售車鈴 — dark automotive theme ===== */

:root {
  --bg: #0a0b0e;
  --bg-2: #0e1015;
  --panel: #12141a;
  --line: rgba(255, 255, 255, 0.08);
  --text: #e9ebf1;
  --muted: #9aa1af;
  --accent: #e10600;
  --accent-soft: rgba(225, 6, 0, 0.14);
  --radius: 18px;
  --font-cn: "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", sans-serif;
  --font-en: "Saira", "Noto Sans TC", sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; scroll-padding-top: 76px; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-cn);
  font-weight: 300;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: none; cursor: pointer; }

/* ===== Top bar ===== */
.topbar {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px clamp(18px, 4vw, 44px);
  background: rgba(10, 11, 14, 0.55);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s, background 0.3s;
}
.topbar.scrolled { border-bottom-color: var(--line); background: rgba(10, 11, 14, 0.82); }

.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 17px;
  letter-spacing: 0.18em;
  white-space: nowrap;
}
.brand-dot {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 12px var(--accent);
}
.brand-cn { letter-spacing: 0.22em; margin-right: -0.22em; }

.nav { display: flex; gap: 6px; overflow-x: auto; scrollbar-width: none; }
.nav::-webkit-scrollbar { display: none; }
.nav a {
  font-size: 13px;
  font-weight: 400;
  letter-spacing: 0.08em;
  color: var(--muted);
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid transparent;
  white-space: nowrap;
  transition: color 0.2s, border-color 0.2s;
}
.nav a:hover { color: var(--text); }
.nav a.active { color: var(--text); border-color: var(--line); background: rgba(255, 255, 255, 0.04); }
.nav a b { font-family: var(--font-en); font-weight: 600; color: var(--accent); margin-right: 5px; }

/* ===== Picker（揀鈴） ===== */
.picker {
  max-width: 1180px;
  margin: 0 auto;
  padding: clamp(76px, 9vh, 100px) clamp(18px, 4vw, 44px) 0;
}
.picker-info {
  margin-bottom: clamp(20px, 3vw, 30px);
  text-align: center;
  font-family: var(--font-en);
  font-weight: 600;
  font-size: clamp(15px, 2vw, 19px);
  letter-spacing: 0.18em;
  color: var(--text);
}
.picker-info::before, .picker-info::after {
  content: "";
  display: inline-block;
  vertical-align: middle;
  width: clamp(24px, 5vw, 56px);
  height: 1px;
  background: var(--accent);
  margin: 0 clamp(12px, 2vw, 20px);
  opacity: 0.85;
}
.picker-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: clamp(12px, 2vw, 20px);
  margin-top: clamp(28px, 4vw, 44px);
}
.pick-card {
  position: relative;
  display: block;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--panel);
  transition: transform 0.3s ease, border-color 0.3s ease;
}
.pick-card img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  transition: transform 0.5s ease, opacity 0.3s ease;
}
.pick-card:hover { transform: translateY(-4px); border-color: rgba(225, 6, 0, 0.55); }
.pick-card:hover img { transform: scale(1.045); }
.pick-num {
  position: absolute;
  top: 12px;
  left: 16px;
  font-family: var(--font-en);
  font-weight: 800;
  font-size: clamp(28px, 4vw, 40px);
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1.5px rgba(233, 235, 241, 0.65);
  text-shadow: 0 2px 14px rgba(0, 0, 0, 0.35);
}
.pick-shade {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(10, 11, 14, 0.08) 40%, rgba(10, 11, 14, 0.82) 100%);
  pointer-events: none;
}
.pick-label {
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 14px;
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  text-align: left;
}
.pick-label b {
  font-size: clamp(17px, 2.4vw, 22px);
  font-weight: 700;
  letter-spacing: 0.06em;
}
.pick-label i {
  font-style: normal;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: #ff5a52;
  border: 1px solid var(--accent);
  border-radius: 999px;
  padding: 2px 10px;
  white-space: nowrap;
}
.pick-label em {
  font-style: normal;
  margin-left: auto;
  font-size: clamp(12.5px, 1.6vw, 14px);
  font-weight: 600;
  letter-spacing: 0.06em;
  color: #fff;
  background: var(--accent);
  border-radius: 999px;
  padding: 4px 13px;
  white-space: nowrap;
  box-shadow: 0 4px 18px rgba(225, 6, 0, 0.45);
}

/* ===== Rim sections ===== */
.rim {
  max-width: 1180px;
  margin: 0 auto;
  padding: clamp(56px, 9vw, 120px) clamp(18px, 4vw, 44px) 0;
}
.rim-grid {
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  gap: clamp(24px, 4vw, 48px);
  align-items: start;
}
@media (max-width: 880px) {
  .rim-grid { grid-template-columns: 1fr; }
}
/* 冇資訊卡嗰陣，相置中顯示，唔好剩半版空位 */
.rim-grid.solo {
  grid-template-columns: minmax(0, 680px);
  justify-content: center;
}

.rim-head {
  display: flex;
  align-items: baseline;
  gap: 16px;
  margin-bottom: 22px;
}
.rim-num {
  font-family: var(--font-en);
  font-weight: 800;
  font-size: clamp(44px, 6vw, 64px);
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1.5px rgba(233, 235, 241, 0.28);
}
.rim-name { font-size: clamp(22px, 3vw, 30px); font-weight: 700; letter-spacing: 0.06em; }
.rim-tag {
  display: inline-block;
  margin-left: auto;
  padding: 5px 14px;
  border: 1px solid var(--accent);
  color: #ff5a52;
  border-radius: 999px;
  font-size: 13px;
  letter-spacing: 0.1em;
  white-space: nowrap;
}

/* Gallery */
.gallery-main {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--panel);
  cursor: zoom-in;
}
.gallery-main img {
  width: 100%;
  aspect-ratio: 3 / 4; /* 相係 iPhone 直度 */
  object-fit: cover;
  transition: transform 0.5s ease, opacity 0.25s ease;
}
.gallery-main:hover img { transform: scale(1.025); }
.gallery-main .zoom-hint {
  position: absolute;
  right: 14px;
  bottom: 14px;
  padding: 6px 13px;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--text);
  background: rgba(10, 11, 14, 0.62);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 999px;
  opacity: 0;
  transition: opacity 0.25s;
  pointer-events: none;
}
.gallery-main:hover .zoom-hint { opacity: 1; }

.thumbs {
  display: flex;
  gap: 10px;
  margin-top: 12px;
  overflow-x: auto;
  padding-bottom: 4px;
  scrollbar-width: thin;
  scrollbar-color: rgba(255, 255, 255, 0.18) transparent;
}
.thumb {
  flex: 0 0 auto;
  width: 104px;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--line);
  opacity: 0.55;
  transition: opacity 0.2s, border-color 0.2s;
  padding: 0;
}
.thumb img { width: 100%; aspect-ratio: 1 / 1; object-fit: cover; }
.thumb:hover { opacity: 0.85; }
.thumb.active { opacity: 1; border-color: var(--accent); }
.photo-count {
  margin-top: 10px;
  font-family: var(--font-en);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--muted);
}

/* Info panel */
.rim-info {
  position: sticky;
  top: 92px;
  background: linear-gradient(180deg, var(--panel), var(--bg-2));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: clamp(22px, 3vw, 34px);
}
@media (max-width: 880px) { .rim-info { position: static; } }

.price {
  font-family: var(--font-en);
  font-weight: 800;
  font-size: clamp(30px, 4vw, 40px);
  color: var(--accent);
  letter-spacing: 0.02em;
  line-height: 1.15;
}
.price-label {
  font-size: 12px;
  letter-spacing: 0.3em;
  color: var(--muted);
  margin-bottom: 2px;
}
.rim-note { margin-top: 16px; color: var(--muted); font-size: 15px; }

.specs { margin-top: 22px; border-top: 1px solid var(--line); }
.specs-row {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 11px 2px;
  border-bottom: 1px solid var(--line);
  font-size: 14.5px;
}
.specs-row dt { color: var(--muted); letter-spacing: 0.06em; white-space: nowrap; }
.specs-row dd { text-align: right; font-weight: 400; }
.specs-row dd.en { font-family: var(--font-en); letter-spacing: 0.04em; }

/* ===== 實車展示 ===== */
.oncar .rim-num {
  -webkit-text-stroke: 0;
  color: var(--text);
  font-size: clamp(32px, 4.5vw, 46px);
  line-height: 1.2;
}
.oncar-grid {
  columns: 2;
  column-gap: 14px;
}
@media (min-width: 880px) {
  .oncar-grid { columns: 3; }
}
.oncar-item {
  display: block;
  width: 100%;
  margin: 0 0 14px;
  padding: 0;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--panel);
  cursor: zoom-in;
  break-inside: avoid;
}
.oncar-item img {
  width: 100%;
  display: block;
  transition: transform 0.5s ease;
}
.oncar-item:hover img { transform: scale(1.035); }

/* ===== Lightbox ===== */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(5, 6, 8, 0.94);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  padding: clamp(8px, 3vw, 40px);
}
.lightbox[hidden] { display: none; }
.lb-figure { max-width: min(1280px, 92vw); max-height: 100%; display: flex; flex-direction: column; }
#lb-img {
  max-width: 100%;
  max-height: calc(100svh - 130px);
  object-fit: contain;
  border-radius: 10px;
  margin: 0 auto;
}
.lb-caption {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 4px 0;
  color: var(--muted);
  font-size: 14px;
  letter-spacing: 0.08em;
}
#lb-count { font-family: var(--font-en); letter-spacing: 0.2em; }
.lb-close, .lb-prev, .lb-next {
  position: absolute;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.05);
  color: var(--text);
  transition: background 0.2s, border-color 0.2s;
  -webkit-tap-highlight-color: transparent;
}
.lb-close:hover, .lb-prev:hover, .lb-next:hover { background: var(--accent); border-color: var(--accent); }
.lb-close { top: 18px; right: 18px; width: 46px; height: 46px; font-size: 26px; }
.lb-prev, .lb-next { top: 50%; transform: translateY(-50%); width: 52px; height: 52px; font-size: 34px; padding-bottom: 4px; }
.lb-prev { left: 16px; }
.lb-next { right: 16px; }
@media (max-width: 640px) {
  .lb-prev { left: 8px; width: 44px; height: 44px; }
  .lb-next { right: 8px; width: 44px; height: 44px; }
}

/* ===== Reveal on scroll ===== */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}