/* ============================================================
   AI 比价网 · 深色高级版样式
   设计语言：深海军蓝底 + 紫青渐变光 + 玻璃卡片 + 平台专属色
   目标：第一眼就和市面上白底表格的比价站不一样。
   ============================================================ */

:root {
  --bg: #0a0e1c;
  --bg2: #0d1328;
  --card: rgba(255, 255, 255, .045);
  --card-solid: #131a30;
  --card-border: rgba(255, 255, 255, .09);
  --text: #eef1f8;
  --muted: #8b93a7;
  --grad: linear-gradient(135deg, #8b5cf6, #06b6d4);
  --violet: #8b5cf6;
  --cyan: #06b6d4;
  --green: #34d399;
  --green-dim: rgba(52, 211, 153, .14);
  --red: #f87171;
  --red-dim: rgba(248, 113, 113, .14);
  --amber: #fbbf24;
  --amber-dim: rgba(251, 191, 36, .14);
  --radius: 16px;
  /* 平台专属色 */
  --c-gpt: #10a37f;
  --c-claude: #d97757;
  --c-gemini: #4285f4;
  --c-grok: #e5e7eb;
  --c-cursor: #f59e0b;
  --c-other: #94a3b8;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", "Noto Sans SC", sans-serif;
  background:
    radial-gradient(900px 480px at 15% -10%, rgba(139, 92, 246, .28), transparent 60%),
    radial-gradient(800px 420px at 90% -5%, rgba(6, 182, 212, .20), transparent 60%),
    var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

a { color: #a5b4fc; text-decoration: none; }
a:hover { text-decoration: underline; }

/* ---------- 顶栏 ---------- */
.topbar {
  position: sticky; top: 0; z-index: 50;
  background: rgba(10, 14, 28, .82);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--card-border);
}
.topbar-inner {
  max-width: 1120px; margin: 0 auto; padding: 12px 16px;
  display: flex; align-items: center; gap: 14px; flex-wrap: wrap;
}
.logo { font-size: 21px; font-weight: 900; letter-spacing: .5px; white-space: nowrap; text-decoration: none; }
.logo b {
  background: var(--grad);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}
.logo small { font-size: 11px; font-weight: 600; color: var(--muted); letter-spacing: 2px; margin-left: 6px; }
.nav { display: flex; gap: 4px; }
.nav a {
  padding: 7px 12px; border-radius: 999px; font-size: 13px; color: var(--muted);
  font-weight: 600; white-space: nowrap;
}
.nav a:hover { color: var(--text); text-decoration: none; background: rgba(255,255,255,.06); }
.nav a.active { color: #fff; background: rgba(139,92,246,.28); }
.search-box { flex: 1; min-width: 170px; position: relative; }
.search-box input {
  width: 100%; padding: 10px 14px 10px 38px;
  border: 1px solid var(--card-border); border-radius: 999px;
  font-size: 14px; outline: none; color: var(--text);
  background: rgba(255,255,255,.06);
}
.search-box input::placeholder { color: var(--muted); }
.search-box input:focus { border-color: var(--violet); background: rgba(255,255,255,.09); }
.search-box::before {
  content: "🔍"; position: absolute; left: 13px; top: 50%;
  transform: translateY(-50%); font-size: 14px; opacity: .8;
}

/* ---------- 内容区 ---------- */
.container { max-width: 1120px; margin: 0 auto; padding: 18px 16px 8px; }

/* Hero */
.hero { padding: 26px 4px 6px; }
.hero h1 {
  font-size: clamp(26px, 5.4vw, 42px);
  font-weight: 900; line-height: 1.25; letter-spacing: .5px;
}
.hero h1 .grad {
  background: var(--grad);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero p { color: var(--muted); margin-top: 8px; font-size: 14px; max-width: 640px; }
.hero p b { color: var(--text); }

/* 数据总览条 */
.stats {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px;
  margin: 18px 0 6px;
}
.stat {
  background: var(--card); border: 1px solid var(--card-border);
  border-radius: var(--radius); padding: 14px 16px;
  position: relative; overflow: hidden;
}
.stat::after {
  content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 3px;
  background: var(--grad);
}
.stat .num {
  font-size: 24px; font-weight: 900; line-height: 1.15;
  font-variant-numeric: tabular-nums;
}
.stat .lbl { font-size: 12px; color: var(--muted); }
.updated { font-size: 12px; color: var(--muted); margin: 10px 0 14px; }
.updated .dot { color: var(--green); }

/* ---------- 筛选 ---------- */
.filters { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 14px; align-items: center; }
.chip {
  padding: 7px 14px; border: 1px solid var(--card-border); border-radius: 999px;
  background: var(--card); font-size: 13px; cursor: pointer; user-select: none;
  color: var(--text); font-weight: 600;
  display: inline-flex; align-items: center; gap: 6px;
}
.chip:hover { border-color: var(--violet); }
.chip.active {
  background: var(--grad); border-color: transparent; color: #fff;
}
.chip .pdot { width: 8px; height: 8px; border-radius: 50%; display: inline-block; }
.sort-row { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 14px; align-items: center; }
.sort-lbl { font-size: 13px; color: var(--muted); }

/* ---------- 商品卡片列表 ---------- */
.prod-list { display: flex; flex-direction: column; gap: 12px; }
.prod {
  display: grid;
  grid-template-columns: 1.5fr .8fr .9fr .9fr 1.1fr auto;
  gap: 12px; align-items: center;
  background: var(--card); border: 1px solid var(--card-border);
  border-radius: var(--radius); padding: 16px 18px;
  transition: border-color .15s, transform .15s;
}
.prod:hover { border-color: rgba(139,92,246,.55); transform: translateY(-1px); }
.prod-name { font-weight: 800; font-size: 17px; line-height: 1.3; }
.prod-name a { color: var(--text); }
.prod-name a:hover { color: #c4b5fd; }
.prod-sub { font-size: 12px; color: var(--muted); margin-top: 3px; display: flex; gap: 6px; align-items: center; flex-wrap: wrap; }
.pdot { width: 9px; height: 9px; border-radius: 50%; display: inline-block; flex: none; }
.p-gpt { background: var(--c-gpt); } .p-claude { background: var(--c-claude); }
.p-gemini { background: var(--c-gemini); } .p-grok { background: var(--c-grok); }
.p-cursor { background: var(--c-cursor); } .p-other { background: var(--c-other); }
.price {
  font-size: 24px; font-weight: 900; line-height: 1.1;
  font-variant-numeric: tabular-nums; white-space: nowrap;
  background: linear-gradient(135deg, #fbbf24, #f97316);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}
.price small { font-size: 12px; font-weight: 600; color: var(--muted); -webkit-text-fill-color: var(--muted); }
.price-free {
  background: linear-gradient(135deg, #34d399, #06b6d4);
  -webkit-background-clip: text; background-clip: text;
}
.cell-lbl { font-size: 11px; color: var(--muted); }
.cell-val { font-size: 14px; font-weight: 700; font-variant-numeric: tabular-nums; }
.stock-ok { color: var(--green); font-weight: 700; }
.stock-no { color: var(--muted); }
.trend { font-size: 13px; font-weight: 700; font-variant-numeric: tabular-nums; }
.trend.down { color: var(--green); }
.trend.up { color: var(--red); }
.trend.flat { color: var(--muted); }
.spark { display: block; margin-top: 2px; }
.lowest { font-size: 12px; color: var(--muted); line-height: 1.5; }
.lowest .store { color: var(--text); font-weight: 700; }
.btn {
  display: inline-block; padding: 9px 18px; border-radius: 999px;
  background: var(--grad); color: #fff; font-size: 13px; font-weight: 700;
  white-space: nowrap; border: none; cursor: pointer;
  box-shadow: 0 4px 16px rgba(139,92,246,.35);
}
.btn:hover { text-decoration: none; filter: brightness(1.1); }
.btn-ghost {
  background: rgba(255,255,255,.07); box-shadow: none;
  border: 1px solid var(--card-border); color: var(--text);
}
.btn-ghost:hover { border-color: var(--violet); }
.btn-sm { padding: 6px 12px; font-size: 12px; }
.badge {
  display: inline-block; padding: 2px 8px; border-radius: 999px;
  font-size: 11px; font-weight: 700; white-space: nowrap;
}
.badge-green { background: var(--green-dim); color: var(--green); }
.badge-red { background: var(--red-dim); color: var(--red); }
.badge-amber { background: var(--amber-dim); color: var(--amber); }
.badge-violet { background: rgba(139,92,246,.22); color: #c4b5fd; }
.badge-grey { background: rgba(255,255,255,.08); color: var(--muted); }
.empty { padding: 56px 16px; text-align: center; color: var(--muted); }

/* ---------- 详情页 ---------- */
.back-link { font-size: 14px; display: inline-block; margin-bottom: 14px; color: #a5b4fc; }
.detail-head {
  background: var(--card); border: 1px solid var(--card-border);
  border-radius: var(--radius); padding: 20px; margin-bottom: 14px;
  display: flex; gap: 18px; flex-wrap: wrap; align-items: flex-start;
}
.detail-head h1 { font-size: 26px; line-height: 1.3; }
.detail-head .meta { color: var(--muted); font-size: 13px; margin-top: 6px; }
.detail-head .big-price { font-size: 34px; }
.alert-box {
  margin-left: auto; background: rgba(139,92,246,.12);
  border: 1px solid rgba(139,92,246,.35); border-radius: 12px; padding: 12px 14px;
  min-width: 240px;
}
.alert-box .t { font-size: 13px; font-weight: 700; margin-bottom: 6px; }
.alert-box .row { display: flex; gap: 8px; }
.alert-box input {
  flex: 1; padding: 8px 10px; border-radius: 8px; border: 1px solid var(--card-border);
  background: rgba(0,0,0,.3); color: var(--text); font-size: 14px; outline: none; min-width: 0;
}
.alert-hit { color: var(--green); font-weight: 700; font-size: 13px; margin-top: 6px; }

/* 报价行 */
.offer {
  display: grid;
  grid-template-columns: 1.4fr 2fr .7fr .6fr auto;
  gap: 12px; align-items: center;
  background: var(--card); border: 1px solid var(--card-border);
  border-radius: var(--radius); padding: 14px 16px;
}
.offer:hover { border-color: rgba(139,92,246,.5); }
.offer + .offer { margin-top: 10px; }
.offer-store { font-weight: 700; font-size: 14px; }
.offer-store small { color: var(--muted); font-weight: 400; display: block; font-size: 12px; }
.offer-title { font-size: 13px; color: #c6cede; line-height: 1.5; }
.offer-price { font-size: 20px; font-weight: 900; color: #fbbf24; font-variant-numeric: tabular-nums; white-space: nowrap; }
.trust { font-size: 12px; font-weight: 700; }
.trust b { font-size: 15px; }
.go-link { font-size: 13px; font-weight: 700; white-space: nowrap; }
.section-t { font-size: 16px; font-weight: 800; margin: 18px 0 10px; display: flex; align-items: center; gap: 8px; }
.section-t small { font-size: 12px; color: var(--muted); font-weight: 400; }

/* ---------- 店铺页 ---------- */
.score-ring {
  width: 92px; height: 92px; border-radius: 50%; flex: none;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  background: conic-gradient(var(--violet) calc(var(--sc, 80) * 1%), rgba(255,255,255,.08) 0);
  position: relative;
}
.score-ring::before {
  content: ""; position: absolute; inset: 7px; border-radius: 50%; background: var(--card-solid);
}
.score-ring b, .score-ring span { position: relative; z-index: 1; }
.score-ring b { font-size: 24px; line-height: 1; }
.score-ring span { font-size: 11px; color: var(--muted); }

/* ---------- 一站购齐 ---------- */
.pick-grid { display: flex; flex-wrap: wrap; gap: 8px; }
.pick {
  padding: 8px 13px; border: 1px solid var(--card-border); border-radius: 999px;
  background: var(--card); font-size: 13px; cursor: pointer; user-select: none; font-weight: 600;
}
.pick.on { background: var(--grad); border-color: transparent; color: #fff; }
.bundle-res { margin-top: 14px; }
.bundle-row {
  background: var(--card); border: 1px solid var(--card-border);
  border-radius: var(--radius); padding: 16px 18px; margin-bottom: 10px;
}
.bundle-row .total { font-size: 22px; font-weight: 900; color: #fbbf24; }
.bundle-row .items { font-size: 13px; color: var(--muted); margin-top: 4px; line-height: 1.8; }

/* ---------- 页脚 ---------- */
.footer {
  max-width: 1120px; margin: 28px auto 0; padding: 18px 16px 28px;
  font-size: 12px; color: var(--muted); text-align: center; line-height: 1.9;
  border-top: 1px solid var(--card-border);
}
.footer a { color: var(--muted); }

/* ---------- 手机端 ---------- */
@media (max-width: 760px) {
  .stats { grid-template-columns: repeat(2, 1fr); }
  .nav { display: none; }
  .search-box { flex-basis: 100%; order: 3; }
  .prod { grid-template-columns: 1fr auto; grid-template-areas:
    "name price" "sub price" "stock trend" "lowest lowest" "btn btn"; row-gap: 4px; }
  .prod .c-name { grid-area: name; } .prod .c-price { grid-area: price; text-align: right; }
  .prod .c-sub { grid-area: sub; } .prod .c-stock { grid-area: stock; }
  .prod .c-trend { grid-area: trend; text-align: right; }
  .prod .c-lowest { grid-area: lowest; } .prod .c-btn { grid-area: btn; margin-top: 6px; }
  .prod .btn { width: 100%; text-align: center; }
  .offer { grid-template-columns: 1fr auto; grid-template-areas:
    "store price" "title price" "trust go"; row-gap: 4px; }
  .offer .o-store { grid-area: store; } .offer .o-title { grid-area: title; }
  .offer .o-price { grid-area: price; text-align: right; }
  .offer .o-trust { grid-area: trust; } .offer .o-go { grid-area: go; text-align: right; }
  .alert-box { margin-left: 0; width: 100%; }
  .detail-head h1 { font-size: 21px; }
}