:root {
  --bg: #faf8f5;
  --card: #ffffff;
  --text: #241e18;
  --muted: #8b8377;
  --line: #eae4da;
  --accent: #b06a34;
  --accent-dark: #8f5326;
  --accent-soft: #f4e9dc;
  --ok: #4a8f63;
  --warn: #c98a1e;
  --bad: #c0503c;
  --trap: #8e44ad;
  --radius: 14px;
  --shadow: 0 1px 2px rgba(60, 45, 30, 0.04), 0 8px 24px rgba(60, 45, 30, 0.05);
}

* { box-sizing: border-box; }

html, body { margin: 0; padding: 0; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

h1, h2 { margin: 0; font-weight: 600; }
.wrap { max-width: 1080px; margin: 0 auto; padding: 0 20px; }

/* ---------- 头部 ---------- */
.site-header {
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(6px);
  position: sticky;
  top: 0;
  z-index: 10;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 20px;
  flex-wrap: wrap;
}

.brand { display: flex; align-items: center; gap: 12px; }

.brand-dot {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: linear-gradient(135deg, #e6a15f, #b06a34);
  box-shadow: inset 0 0 0 3px rgba(255, 255, 255, 0.35);
  flex: none;
}

.brand-text h1 { font-size: 18px; letter-spacing: 0.01em; }
.brand-text p { margin: 2px 0 0; font-size: 12.5px; color: var(--muted); }

.header-actions { display: flex; gap: 10px; align-items: center; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 9px 16px;
  border-radius: 10px;
  border: 1px solid transparent;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease, transform 0.05s ease;
  user-select: none;
  text-decoration: none;
}
.btn:active { transform: translateY(1px); }
.btn.primary { background: var(--accent); color: #fff; }
.btn.primary:hover { background: var(--accent-dark); }
.btn.ghost { background: #fff; border-color: var(--line); color: var(--text); }
.btn.ghost:hover { border-color: #d8cfc0; background: #fdfbf8; }
.btn.small { font-size: 13px; padding: 7px 13px; }
.btn.tiny { font-size: 12.5px; padding: 5px 11px; }
.btn.block { width: 100%; }

/* ---------- 拖拽区 ---------- */
.dropzone {
  margin: 26px 0;
  border: 1.5px dashed #d6ccbc;
  border-radius: var(--radius);
  background: #fff;
  transition: border-color 0.15s ease, background 0.15s ease;
}
.dropzone.active { border-color: var(--accent); background: var(--accent-soft); }
.dz-inner { padding: 54px 20px; text-align: center; }
.dz-title { margin: 0; font-size: 17px; font-weight: 600; }
.dz-sub { margin: 6px 0 16px; color: var(--muted); font-size: 13.5px; }

/* ---------- 工作区 ---------- */
.workspace {
  display: grid;
  grid-template-columns: 288px 1fr;
  gap: 20px;
  margin: 26px 0;
  align-items: start;
}

.panel {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: var(--shadow);
}

.panel-block { padding-top: 18px; margin-top: 18px; border-top: 1px solid var(--line); }
.panel-block:first-child { padding-top: 0; margin-top: 0; border-top: none; }
.panel-block > h2 { font-size: 13.5px; margin-bottom: 12px; color: var(--text); }

.tag {
  display: inline-block;
  font-size: 10.5px;
  padding: 1px 7px;
  border-radius: 7px;
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 500;
  vertical-align: middle;
  margin-left: 5px;
}

.block-desc { margin: 0 0 11px; font-size: 12px; color: var(--muted); line-height: 1.5; }

.field { margin-bottom: 16px; }
.field:last-child { margin-bottom: 0; }
.field > label { display: block; font-size: 13px; color: var(--muted); margin-bottom: 6px; }
.field > label b { color: var(--accent); }

input[type="range"] { width: 100%; accent-color: var(--accent); }

select {
  width: 100%;
  padding: 8px 10px;
  border-radius: 9px;
  border: 1px solid var(--line);
  background: #fff;
  font-size: 14px;
  color: var(--text);
}

.check-group { display: flex; flex-direction: column; gap: 8px; }
.check { display: flex; align-items: center; gap: 8px; font-size: 13.5px; color: var(--text); cursor: pointer; }
.check input { accent-color: var(--accent); width: 15px; height: 15px; }

.hint { margin: 7px 0 0; font-size: 12px; color: var(--muted); }
.hint code { background: #f3efe9; padding: 1px 5px; border-radius: 5px; font-size: 11.5px; }
.muted { color: var(--muted); }

.actions { display: flex; flex-direction: column; gap: 9px; }

.palette-row { display: flex; align-items: center; justify-content: space-between; gap: 8px; }

/* ---------- 换色卡方向选择 ---------- */
.swap { display: flex; align-items: flex-start; gap: 8px; margin-bottom: 11px; }
.swap-side { flex: 1; min-width: 0; }
.swap-label { display: block; font-size: 11px; color: var(--muted); margin-bottom: 3px; }
.swap-name {
  display: block;
  font-size: 13.5px;
  font-weight: 500;
  padding: 8px 10px;
  background: #f7f4ef;
  border-radius: 9px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.swap-arrow { color: var(--accent); font-weight: 600; flex: none; margin-top: 20px; }

/* ---------- 预览 ---------- */
.previews { display: grid; gap: 20px; }

.preview-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}
.pc-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 11px 16px;
  border-bottom: 1px solid var(--line);
}
.pc-head h2 { font-size: 13.5px; }
.pc-head .muted { font-size: 12.5px; }
.pc-body { padding: 16px; overflow: auto; background: #fdfcfa; }
.pc-body canvas { display: block; margin: 0 auto; border-radius: 6px; }
.pc-body.out { background: #f7f4ef; }
.pc-body.out canvas { image-rendering: pixelated; }

/* ---------- 表格 ---------- */
.stats { margin: 26px 0; }
.convert { margin: 26px 0 40px; }

.stats-head { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; margin-bottom: 12px; flex-wrap: wrap; }
.stats-head h2 { font-size: 14px; }
.stats-head .muted { font-size: 13px; }
.stats-head-right { display: flex; align-items: center; gap: 12px; }

.table-wrap { max-height: 460px; overflow: auto; border: 1px solid var(--line); border-radius: 10px; }

table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
thead th {
  position: sticky;
  top: 0;
  background: #fbf9f6;
  text-align: left;
  font-weight: 600;
  color: var(--muted);
  padding: 10px 12px;
  border-bottom: 1px solid var(--line);
  font-size: 12.5px;
  z-index: 1;
}
tbody td { padding: 9px 12px; border-bottom: 1px solid #f2ede5; vertical-align: middle; }
tbody tr:last-child td { border-bottom: none; }
tbody tr:hover { background: #fdfbf8; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }
th.arrow, td.arrow { width: 26px; text-align: center; color: var(--muted); }
td.mono, .mono { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }

.swatch {
  display: inline-block;
  width: 16px;
  height: 16px;
  border-radius: 4px;
  border: 1px solid rgba(0, 0, 0, 0.1);
  vertical-align: -3px;
  margin-right: 7px;
}
.swatch.big { width: 20px; height: 20px; vertical-align: middle; }

/* ---------- 换算结果 ---------- */
.convert-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 8px;
}
.convert-head h2 { font-size: 14px; }
.convert-route { font-size: 13px; color: var(--muted); }
.convert-route .arrow { color: var(--accent); margin: 0 7px; font-weight: 600; }

.convert-summary { margin: 0 0 4px; font-size: 13.5px; color: var(--text); }
.convert-summary b { color: var(--accent); }

.tabs {
  display: flex;
  align-items: center;
  gap: 4px;
  margin: 16px 0 14px;
  border-bottom: 1px solid var(--line);
}
.tab {
  appearance: none;
  border: none;
  background: none;
  padding: 8px 13px;
  font-size: 13.5px;
  color: var(--muted);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  font-family: inherit;
}
.tab:hover { color: var(--text); }
.tab.active { color: var(--accent); border-bottom-color: var(--accent); font-weight: 600; }
.tab-action { margin-left: auto; }

.tab-hint { margin: 0 0 11px; font-size: 12.5px; color: var(--muted); }
.tab-hint b { color: var(--accent); font-weight: 600; }

.preview-tabs { display: flex; gap: 2px; }

.pc-meta { display: flex; align-items: center; gap: 10px; }

.diff-badge {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  padding: 3px 10px;
  border-radius: 20px;
  background: #f0ece5;
  white-space: nowrap;
}
.diff-badge .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #dcd6cc;
}
.diff-badge .dtext {
  margin-left: 5px;
  font-size: 11.5px;
  font-weight: 600;
  color: var(--muted);
}
.diff-badge.lv1 .dot.active { background: #4a8f63; }
.diff-badge.lv2 .dot.active { background: #5f9e42; }
.diff-badge.lv3 .dot.active { background: #c98a1e; }
.diff-badge.lv4 .dot.active { background: #d0722f; }
.diff-badge.lv5 .dot.active { background: #c04040; }
.diff-badge.lv1 .dtext { color: #3f8a5c; }
.diff-badge.lv2 .dtext { color: #548a3f; }
.diff-badge.lv3 .dtext { color: #b0791a; }
.diff-badge.lv4 .dtext { color: #c0703a; }
.diff-badge.lv5 .dtext { color: #c04040; }

.ptab {
  appearance: none;
  border: none;
  background: none;
  padding: 4px 11px;
  border-radius: 8px;
  font-size: 13.5px;
  color: var(--muted);
  cursor: pointer;
  font-family: inherit;
}
.ptab:hover { background: #f4f1ec; color: var(--text); }
.ptab.active { background: var(--accent-soft); color: var(--accent); font-weight: 600; }

.pc-body canvas[hidden] { display: none; }

.badge {
  display: inline-block;
  padding: 1px 8px;
  border-radius: 20px;
  font-size: 11.5px;
  line-height: 1.7;
  white-space: nowrap;
}
.badge.ok { background: #e8f3ec; color: var(--ok); }
.badge.warn { background: #faf1dd; color: var(--warn); }
.badge.bad { background: #f8e6e2; color: var(--bad); }
.badge.trap { background: #f1e4f6; color: var(--trap); margin-left: 6px; }

/* ---------- 页脚 ---------- */
.site-footer { padding: 18px 0 46px; color: var(--muted); font-size: 12.5px; text-align: center; }
.site-footer p { margin: 0; }

/* ---------- 顶部导航 ---------- */
.site-nav { display: flex; gap: 2px; }

.nav-link {
  appearance: none;
  border: none;
  background: none;
  padding: 7px 13px;
  border-radius: 9px;
  font-size: 13.5px;
  color: var(--muted);
  cursor: pointer;
  font-family: inherit;
}
.nav-link:hover { background: #f4f1ec; color: var(--text); }
.nav-link.active { background: var(--accent-soft); color: var(--accent); font-weight: 600; }

/* ---------- 页面视图 ---------- */
.view { padding-bottom: 20px; }

.page-hero { padding: 34px 0 24px; }
.page-hero h1 { font-size: 24px; margin-bottom: 8px; }
.page-hero p { margin: 0; color: var(--muted); font-size: 14px; max-width: 620px; }

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(232px, 1fr));
  gap: 16px;
  margin-bottom: 22px;
}

.info-card, .sku-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: var(--shadow);
}
.info-card h2, .sku-card h2 { font-size: 14px; margin-bottom: 10px; }
.info-card ul, .info-card ol { margin: 0; padding-left: 18px; font-size: 13.5px; color: var(--text); }
.info-card li { margin-bottom: 5px; }

.sku-card { display: flex; flex-direction: column; }
.sku-card p { margin: 0 0 14px; font-size: 13.5px; color: var(--muted); }
.sku-card .price { font-size: 20px; font-weight: 600; color: var(--accent); margin: auto 0 12px; }

.cta-block {
  background: var(--accent-soft);
  border-radius: var(--radius);
  padding: 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 30px;
}
.cta-block p { margin: 0; font-size: 14px; max-width: 520px; }
.cta-actions { display: flex; gap: 10px; flex-wrap: wrap; }

.placeholder { color: #c0503c; font-weight: 600; }

/* ---------- 轻提示 ---------- */
.toast {
  position: fixed;
  left: 50%;
  bottom: 34px;
  transform: translateX(-50%);
  background: #2c2620;
  color: #fff;
  padding: 10px 18px;
  border-radius: 10px;
  font-size: 13.5px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
  z-index: 999;
  animation: toast-in 0.2s ease;
}
@keyframes toast-in {
  from { opacity: 0; transform: translate(-50%, 8px); }
  to { opacity: 1; transform: translate(-50%, 0); }
}

/* ---------- 响应式 ---------- */
@media (max-width: 760px) {
  .workspace { grid-template-columns: 1fr; }
  .header-inner { gap: 12px; }
  .brand-text p { display: none; }
}

/* ---------- 分色施工图（打印） ---------- */
#printArea { display: none; }

.wo-page { page-break-after: always; break-after: page; padding: 10px 0; }

.wo-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 7px;
}
.wo-title { font-size: 15px; font-weight: 600; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }
.wo-meta { font-size: 12.5px; color: var(--muted); }

.wo-page canvas { display: block; max-width: 100%; height: auto; }

@media print {
  body > *:not(#printArea) { display: none !important; }
  #printArea { display: block !important; }
  .wo-page { page-break-after: always; break-after: page; }
  .wo-page:last-child { page-break-after: auto; break-after: auto; }
}