/* =========================================================
   DFM 智检 · PCB 可制造性智能预检助手 — 样式（浅色主题）
   ========================================================= */
:root {
  --bg: #f5f7fb;
  --card: #ffffff;
  --border: #e4e9f2;
  --text: #17203a;
  --muted: #6b7590;
  --primary: #2563eb;
  --primary-soft: #eff4ff;
  --fatal: #dc2626;
  --fatal-soft: #fef2f2;
  --severe: #ea580c;
  --severe-soft: #fff7ed;
  --warning: #d97706;
  --warning-soft: #fffbeb;
  --info: #0284c7;
  --info-soft: #f0f9ff;
  --success: #16a34a;
  --shadow: 0 1px 2px rgba(23,32,58,.05), 0 8px 24px -12px rgba(23,32,58,.12);
  --radius: 14px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ---------- 顶栏 ---------- */
.topbar {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 28px;
  background: rgba(255,255,255,.86);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.brand { display: flex; align-items: center; gap: 10px; }
.brand-text { display: flex; flex-direction: column; line-height: 1.25; }
.brand-text strong { font-size: 17px; letter-spacing: .3px; }
.brand-text span { font-size: 11.5px; color: var(--muted); }
.nav { display: flex; gap: 4px; }
.nav a {
  padding: 7px 14px; border-radius: 8px; color: var(--muted);
  text-decoration: none; font-size: 14px; transition: .15s;
}
.nav a:hover { color: var(--primary); background: var(--primary-soft); }
.topbar-right { display: flex; align-items: center; gap: 10px; }
.lang-btn {
  border: 1px solid var(--border); background: #fff; border-radius: 8px;
  padding: 7px 13px; font-size: 13px; font-weight: 600; cursor: pointer;
  color: var(--muted); transition: .15s; font-family: inherit;
}
.lang-btn:hover { border-color: #cbd5e1; color: var(--primary); }
.badge-dot {
  display: inline-block; width: 7px; height: 7px; border-radius: 50%;
  background: var(--success); margin-right: 6px;
}

/* ---------- 按钮 ---------- */
.btn {
  border: 1px solid var(--border); background: var(--card); color: var(--text);
  padding: 9px 18px; border-radius: 10px; font-size: 14px; cursor: pointer;
  transition: .15s; font-family: inherit;
}
.btn:hover { border-color: #cbd5e1; box-shadow: var(--shadow); }
.btn-primary {
  background: var(--primary); border-color: var(--primary); color: #fff; font-weight: 600;
}
.btn-primary:hover { background: #1d4ed8; }
.btn-primary:disabled { opacity: .5; cursor: not-allowed; box-shadow: none; }
.btn-ghost { background: transparent; }
.btn-block { display: block; width: 100%; margin-top: 12px; }
.kbd { font-size: 13px; margin-left: 4px; opacity: .8; }

/* ---------- 视图切换 ---------- */
.view { max-width: 1200px; margin: 0 auto; padding: 28px 24px 80px; animation: fadeIn .3s ease; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; } }

/* ---------- 首页 Hero ---------- */
.hero {
  display: grid; grid-template-columns: 1.05fr .95fr; gap: 44px; align-items: center;
  padding: 46px 8px 30px;
}
.hero-tag {
  display: inline-block; padding: 5px 14px; border-radius: 999px;
  background: var(--primary-soft); color: var(--primary); font-size: 13px; font-weight: 600;
  margin-bottom: 18px;
}
.hero h1 { font-size: 40px; line-height: 1.25; letter-spacing: .5px; font-weight: 800; }
.hero h1 em { font-style: normal; color: var(--primary); }
.hero-sub { color: var(--muted); margin: 16px 0 22px; font-size: 15.5px; max-width: 540px; }
.hero-stats { display: flex; gap: 34px; }
.hero-stats div { display: flex; flex-direction: column; }
.hero-stats strong { font-size: 22px; color: var(--text); }
.hero-stats span { font-size: 12.5px; color: var(--muted); }

/* ---------- 上传卡片 ---------- */
.upload-card {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 22px; box-shadow: var(--shadow);
}
.upload-card-head {
  display: flex; justify-content: space-between; align-items: center; margin-bottom: 14px;
}
.upload-card-head h3 { font-size: 16px; }
.upload-hint { font-size: 12px; color: var(--muted); }
.dropzone {
  border: 2px dashed #c7d2e8; border-radius: 12px; padding: 26px 18px;
  text-align: center; cursor: pointer; transition: .15s; background: #fafcff;
}
.dropzone:hover, .dropzone.drag { border-color: var(--primary); background: var(--primary-soft); }
.dz-title { font-weight: 600; margin-top: 10px; font-size: 15px; }
.dz-sub { color: var(--muted); font-size: 13px; }
.file-list { margin-top: 10px; display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; }
.file-chip {
  background: #fff; border: 1px solid var(--border); border-radius: 8px;
  padding: 4px 10px; font-size: 12.5px; display: flex; align-items: center; gap: 6px;
}
.file-chip b { color: var(--primary); }
.file-chip .rm { cursor: pointer; color: var(--muted); font-weight: 700; padding: 0 2px; }
.file-chip .rm:hover { color: var(--fatal); }
.upload-actions { display: flex; gap: 10px; margin-top: 16px; }
.upload-actions .btn-primary { flex: 1; }

.param-panel { margin-top: 14px; border-top: 1px dashed var(--border); padding-top: 12px; }
.param-panel summary { cursor: pointer; color: var(--muted); font-size: 13.5px; user-select: none; }
.param-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-top: 12px; }
.param-grid label { display: flex; flex-direction: column; font-size: 12.5px; color: var(--muted); gap: 5px; }
.param-grid input, .param-grid select {
  border: 1px solid var(--border); border-radius: 8px; padding: 8px 10px; font-size: 14px;
  background: #fff; color: var(--text); font-family: inherit;
}
.param-grid input:focus, .param-grid select:focus { outline: 2px solid var(--primary-soft); border-color: var(--primary); }

/* ---------- 信任区 ---------- */
.trust {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px;
  padding: 10px 8px 0;
}
.trust-item {
  display: flex; gap: 12px; background: var(--card); border: 1px solid var(--border);
  border-radius: 12px; padding: 14px 16px; box-shadow: var(--shadow);
}
.ti-icon { font-size: 22px; }
.trust-item strong { font-size: 14px; display: block; }
.trust-item small { color: var(--muted); font-size: 12.5px; }

/* ---------- 进度视图 ---------- */
.progress-card {
  max-width: 560px; margin: 90px auto; background: var(--card);
  border: 1px solid var(--border); border-radius: var(--radius);
  padding: 40px; text-align: center; box-shadow: var(--shadow);
}
.spinner-ring {
  width: 56px; height: 56px; margin: 0 auto 18px; border-radius: 50%;
  border: 4px solid var(--primary-soft); border-top-color: var(--primary);
  animation: spin 1s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.progress-card h2 { font-size: 18px; margin-bottom: 18px; }
.progress-steps { list-style: none; text-align: left; max-width: 380px; margin: 0 auto 18px; }
.progress-steps li {
  display: flex; align-items: center; gap: 10px; padding: 6px 0;
  color: var(--muted); font-size: 14px;
}
.progress-steps li .step-dot {
  width: 18px; height: 18px; border-radius: 50%; border: 2px solid var(--border);
  display: inline-flex; align-items: center; justify-content: center; font-size: 11px; flex-shrink: 0;
}
.progress-steps li.done { color: var(--text); }
.progress-steps li.done .step-dot { background: var(--success); border-color: var(--success); color: #fff; }
.progress-steps li.active { color: var(--primary); font-weight: 600; }
.progress-steps li.active .step-dot { border-color: var(--primary); color: var(--primary); }
.progress-bar { height: 6px; border-radius: 3px; background: #eef1f7; overflow: hidden; }
.progress-bar i { display: block; height: 100%; width: 0; background: linear-gradient(90deg, var(--primary), #60a5fa); transition: width .3s; }
.progress-note { margin-top: 10px; font-size: 13px; color: var(--muted); }

/* ---------- 报告 ---------- */
.report-head {
  display: flex; justify-content: space-between; align-items: center; margin-bottom: 18px;
}
.report-title h2 { font-size: 22px; }
.report-meta { color: var(--muted); font-size: 13px; margin-top: 4px; }
.chip {
  display: inline-block; padding: 3px 10px; border-radius: 999px;
  font-size: 12px; font-weight: 600;
}
.chip-id { background: var(--primary-soft); color: var(--primary); margin-left: 8px; vertical-align: 3px; }

.summary-grid {
  display: grid; grid-template-columns: repeat(6, 1fr); gap: 14px; margin-bottom: 18px;
}
.sum-card {
  background: var(--card); border: 1px solid var(--border); border-radius: 12px;
  padding: 16px 14px; text-align: center; box-shadow: var(--shadow);
  cursor: pointer; transition: .15s;
}
.sum-card:hover { transform: translateY(-2px); box-shadow: 0 12px 24px -12px rgba(23,32,58,.18); }
.sum-card strong { font-size: 26px; display: block; line-height: 1.2; }
.sum-card span { font-size: 12.5px; color: var(--muted); }
.sum-ico { font-size: 20px; margin-bottom: 4px; }
.sum-card[data-sev="fatal"] strong { color: var(--fatal); }
.sum-card[data-sev="severe"] strong { color: var(--severe); }
.sum-card[data-sev="warning"] strong { color: var(--warning); }
.sum-card[data-sev="info"] strong { color: var(--info); }
.sum-card[data-sev="total"] strong { color: var(--text); }
.sum-card.active { outline: 2px solid var(--primary); }

.score-ring {
  width: 92px; height: 92px; margin: 0 auto 6px; border-radius: 50%;
  background: conic-gradient(var(--primary) var(--deg, 0%), #e8edf6 0);
  display: flex; align-items: center; justify-content: center;
}
.score-inner {
  width: 74px; height: 74px; border-radius: 50%; background: #fff;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
}
.score-inner strong { font-size: 22px !important; color: var(--primary) !important; }
.score-inner span { font-size: 10.5px !important; }
.sum-verdict { font-size: 12.5px; color: var(--muted); margin-top: 4px; }
.sum-verdict b { font-weight: 700; }
.sum-verdict[data-tone="good"] b { color: var(--success); }
.sum-verdict[data-tone="warn"] b { color: var(--warning); }
.sum-verdict[data-tone="bad"] b { color: var(--fatal); }

/* ---------- 面板 ---------- */
.panel {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 20px; margin-bottom: 18px; box-shadow: var(--shadow);
}
.panel-head {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 14px; gap: 12px; flex-wrap: wrap;
}
.panel-head h3 { font-size: 16px; }
.ai-badge, .fab-badge {
  background: linear-gradient(135deg, #2563eb, #7c3aed); color: #fff;
  font-size: 11.5px; font-weight: 700; padding: 3px 10px; border-radius: 999px;
}
.ai-body { display: flex; flex-direction: column; gap: 10px; }
.ai-body p {
  background: #f8fafd; border: 1px solid var(--border); border-left: 3px solid var(--primary);
  border-radius: 8px; padding: 10px 14px; font-size: 14px;
}
.ai-body p:first-child { border-left-color: var(--primary); }
.ai-body p:nth-child(2) { border-left-color: var(--severe); }
.ai-body p:nth-child(3) { border-left-color: var(--success); }

/* ---------- 板图 ---------- */
.board-wrap {
  position: relative; display: flex; gap: 14px; align-items: flex-start;
}
#board-svg {
  flex: 1; width: 100%; max-height: 520px; background: #0d1b2a; border-radius: 10px;
  border: 1px solid #22334a;
}
.board-legend {
  width: 150px; flex-shrink: 0; display: flex; flex-direction: column; gap: 7px;
  font-size: 12.5px; color: var(--muted);
}
.legend-row { display: flex; align-items: center; gap: 8px; }
.legend-dot { width: 12px; height: 12px; border-radius: 3px; flex-shrink: 0; }
.legend-sev { display: flex; align-items: center; gap: 6px; margin-top: 6px; padding-top: 6px; border-top: 1px dashed var(--border); }
.sev-pin { width: 12px; height: 12px; border-radius: 50%; border: 2px solid #fff; box-shadow: 0 0 0 1px rgba(0,0,0,.4); }
.board-tip { color: var(--muted); font-size: 12.5px; margin-top: 10px; }
.risk-marker { cursor: pointer; transition: opacity .2s; }
.risk-marker.pulse { animation: markerPulse 1s ease 2; }
@keyframes markerPulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.55); }
}
.layer-toggles { display: flex; gap: 6px; flex-wrap: wrap; }
.lt-btn {
  border: 1px solid var(--border); background: #fff; border-radius: 999px;
  padding: 4px 12px; font-size: 12px; cursor: pointer; color: var(--muted); transition: .15s;
}
.lt-btn.on { background: var(--primary); border-color: var(--primary); color: #fff; }

/* ---------- 风险列表 ---------- */
.issue-tabs { display: flex; gap: 6px; }
.itab {
  border: 1px solid var(--border); background: #fff; border-radius: 999px;
  padding: 4px 14px; font-size: 13px; cursor: pointer; color: var(--muted);
}
.itab.on { background: var(--text); border-color: var(--text); color: #fff; }
.itab[data-sev="fatal"].on { background: var(--fatal); border-color: var(--fatal); }
.itab[data-sev="severe"].on { background: var(--severe); border-color: var(--severe); }
.itab[data-sev="warning"].on { background: var(--warning); border-color: var(--warning); }
.itab[data-sev="info"].on { background: var(--info); border-color: var(--info); }

.issue-list { display: flex; flex-direction: column; gap: 12px; }
.issue-item {
  border: 1px solid var(--border); border-radius: 12px; padding: 14px 16px;
  border-left: 4px solid var(--muted); transition: .15s; cursor: pointer;
}
.issue-item[data-sev="fatal"] { border-left-color: var(--fatal); background: var(--fatal-soft); }
.issue-item[data-sev="severe"] { border-left-color: var(--severe); background: var(--severe-soft); }
.issue-item[data-sev="warning"] { border-left-color: var(--warning); background: var(--warning-soft); }
.issue-item[data-sev="info"] { border-left-color: var(--info); background: var(--info-soft); }
.issue-item.hl { outline: 2px solid var(--primary); outline-offset: 2px; }
.issue-head { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.sev-badge { font-size: 11.5px; font-weight: 700; padding: 2px 9px; border-radius: 999px; color: #fff; }
.sev-badge[data-sev="fatal"] { background: var(--fatal); }
.sev-badge[data-sev="severe"] { background: var(--severe); }
.sev-badge[data-sev="warning"] { background: var(--warning); }
.sev-badge[data-sev="info"] { background: var(--info); }
.issue-title { font-weight: 700; font-size: 15px; }
.issue-count { font-size: 12px; color: var(--muted); background: rgba(255,255,255,.7); padding: 2px 8px; border-radius: 999px; border: 1px solid var(--border); }
.issue-std { font-size: 12px; color: var(--muted); }
.issue-meta { display: flex; gap: 18px; margin-top: 8px; font-size: 13px; flex-wrap: wrap; }
.issue-meta .mv { color: var(--severe); font-weight: 600; }
.issue-meta .rv { color: var(--muted); }
.issue-ai {
  margin-top: 10px; border-top: 1px dashed rgba(0,0,0,.08); padding-top: 10px;
  font-size: 13.5px; color: #33415e;
}
.issue-ai summary { cursor: pointer; font-weight: 600; color: var(--primary); user-select: none; }
.issue-ai .ai-explain { margin: 8px 0 6px; }
.issue-ai ol { padding-left: 20px; margin: 6px 0; }
.issue-ai li { margin: 3px 0; }
.issue-ai .ai-tags { display: flex; gap: 8px; flex-wrap: wrap; }
.tag { font-size: 11.5px; padding: 2px 9px; border-radius: 999px; background: #eef2f9; color: #4b5a78; }
.tag b { font-weight: 700; }
.empty-hint { text-align: center; color: var(--muted); padding: 30px 0; }

/* ---------- 工厂表 ---------- */
.factory-verdict {
  background: linear-gradient(135deg, #f0f7ff, #f5f3ff);
  border: 1px solid #dbe7fb; border-radius: 10px; padding: 12px 16px;
  font-size: 14px; margin-bottom: 14px;
}
.factory-verdict b.ok { color: var(--success); }
.factory-verdict b.no { color: var(--fatal); }
.table-wrap { overflow-x: auto; }
.fab-table { width: 100%; border-collapse: collapse; font-size: 13px; min-width: 900px; }
.fab-table th, .fab-table td { padding: 10px 12px; text-align: left; border-bottom: 1px solid var(--border); }
.fab-table th { background: #f8fafd; color: var(--muted); font-weight: 600; font-size: 12.5px; white-space: nowrap; }
.fab-table tr:hover td { background: #fafbff; }
.fab-name { font-weight: 700; }
.tier-chip { font-size: 11px; padding: 2px 8px; border-radius: 999px; background: var(--primary-soft); color: var(--primary); }
.cell-ok { color: var(--success); font-weight: 600; }
.cell-warn { color: var(--warning); font-weight: 600; }
.cell-fail { color: var(--fatal); font-weight: 600; }
.fab-state {
  display: inline-block; font-size: 11.5px; font-weight: 700; padding: 3px 10px; border-radius: 999px;
}
.fab-state.pass { background: #ecfdf5; color: var(--success); }
.fab-state.warn { background: var(--warning-soft); color: var(--warning); }
.fab-state.fail { background: var(--fatal-soft); color: var(--fatal); }
.table-note { color: var(--muted); font-size: 12px; margin-top: 10px; }

/* ---------- 页脚 ---------- */
.footer {
  border-top: 1px solid var(--border); padding: 28px 24px 40px; text-align: center;
  color: var(--muted); font-size: 13px; background: #fff;
}
.footer-note { margin-top: 6px; font-size: 12px; }

/* ---------- 弹窗 ---------- */
.modal-mask {
  position: fixed; inset: 0; z-index: 100; background: rgba(15,23,42,.45);
  display: flex; align-items: center; justify-content: center; padding: 24px;
  animation: fadeIn .2s ease;
}
.modal-mask[hidden] { display: none; }
[hidden] { display: none !important; }
.modal {
  background: #fff; border-radius: 16px; max-width: 900px; width: 100%;
  padding: 28px; position: relative; max-height: 88vh; overflow-y: auto;
  box-shadow: 0 24px 60px -20px rgba(15,23,42,.4);
}
.modal-wide { max-width: 820px; }
.modal h2 { font-size: 20px; }
.modal-sub { color: var(--muted); font-size: 13.5px; margin: 4px 0 18px; }
.modal-close {
  position: absolute; top: 14px; right: 16px; border: none; background: #f1f4f9;
  width: 30px; height: 30px; border-radius: 50%; cursor: pointer; font-size: 13px; color: var(--muted);
}
.modal-close:hover { background: #e5eaf3; }
.price-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.price-card {
  border: 1px solid var(--border); border-radius: 14px; padding: 20px; position: relative;
  transition: .15s;
}
.price-card:hover { box-shadow: var(--shadow); transform: translateY(-2px); }
.price-card.hot { border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-soft); }
.hot-tag {
  position: absolute; top: -11px; left: 50%; transform: translateX(-50%);
  background: var(--primary); color: #fff; font-size: 11px; font-weight: 700;
  padding: 2px 12px; border-radius: 999px; white-space: nowrap;
}
.price-card h4 { font-size: 15px; }
.price-card .price { margin: 6px 0 12px; }
.price-card .price strong { font-size: 30px; color: var(--text); }
.price-card .price span { color: var(--muted); font-size: 13px; }
.price-card ul { list-style: none; font-size: 13px; color: #47536b; }
.price-card li { padding: 4px 0; position: relative; padding-left: 18px; }
.price-card li::before { content: "✓"; position: absolute; left: 0; color: var(--success); font-weight: 700; }
.partner-box {
  margin-top: 20px; background: #f5f8ff; border: 1px dashed #b9cdf5; border-radius: 12px;
  padding: 16px 18px; font-size: 13.5px; color: #33415e;
}
.partner-box h4 { font-size: 14px; margin-bottom: 6px; }

/* ---------- 知识库 ---------- */
.kb-list { display: flex; flex-direction: column; gap: 10px; }
.kb-item {
  border: 1px solid var(--border); border-radius: 10px; padding: 12px 14px;
  display: flex; gap: 12px; align-items: flex-start;
}
.kb-cat {
  flex-shrink: 0; font-size: 11.5px; font-weight: 700; color: var(--primary);
  background: var(--primary-soft); padding: 3px 10px; border-radius: 999px; margin-top: 2px;
}
.kb-item h4 { font-size: 14px; }
.kb-item .std { font-size: 12px; color: var(--info); background: var(--info-soft); padding: 1px 8px; border-radius: 999px; margin-left: 8px; font-weight: 600; }
.kb-item p { font-size: 13px; color: var(--muted); margin-top: 3px; }

/* ---------- Toast ---------- */
.toast {
  position: fixed; bottom: 28px; left: 50%; transform: translateX(-50%);
  background: #17203a; color: #fff; padding: 10px 20px; border-radius: 10px;
  font-size: 13.5px; z-index: 200; box-shadow: 0 12px 30px -10px rgba(0,0,0,.4);
  animation: fadeIn .2s ease;
}

/* ---------- 响应式 ---------- */
@media (max-width: 960px) {
  .hero { grid-template-columns: 1fr; padding-top: 24px; }
  .summary-grid { grid-template-columns: repeat(3, 1fr); }
  .price-grid { grid-template-columns: 1fr; }
  .trust { grid-template-columns: 1fr; }
  .board-wrap { flex-direction: column; }
  .board-legend { width: 100%; flex-direction: row; flex-wrap: wrap; }
  .param-grid { grid-template-columns: repeat(2, 1fr); }
  .nav { display: none; }
}
@media (max-width: 560px) {
  .summary-grid { grid-template-columns: repeat(2, 1fr); }
  .hero h1 { font-size: 30px; }
  .upload-actions { flex-direction: column; }
}