:root {
  color-scheme: dark;
  --bg-base: #0a0c0f;
  --bg-panel: #13161b;
  --bg-elev: #1a1d24;
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.14);
  --text: #e6e8eb;
  --text-2: #cdd1d6;
  --text-mute: #8a8f98;
  --up: #22d18a;
  --down: #ef4444;
  --warn: #facc15;
  --accent: #16c47f;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, "Roboto Mono", monospace;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg-base);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI",
    Roboto, "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 14px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.mono { font-family: var(--mono); font-variant-numeric: tabular-nums; }

/* ── header ────────────────────────────────────────────────────────── */
.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 24px;
  border-bottom: 1px solid var(--border);
  background: rgba(10, 12, 15, 0.92);
  backdrop-filter: saturate(140%) blur(12px);
  position: sticky;
  top: 0;
  z-index: 10;
}
.brand { display: flex; gap: 14px; align-items: center; }
.brand .logo {
  font-size: 28px;
  width: 44px; height: 44px;
  display: grid; place-items: center;
  background: var(--bg-elev);
  border-radius: 12px;
  border: 1px solid var(--border);
}
.brand h1 { margin: 0; font-size: 18px; font-weight: 600; letter-spacing: -0.01em; }
.brand .sub { margin: 2px 0 0; color: var(--text-mute); font-size: 12px; }

.status { display: flex; gap: 8px; align-items: center; color: var(--text-mute); font-size: 12px; }
.dot { width: 8px; height: 8px; border-radius: 50%; display: inline-block; }
.dot-ok { background: var(--up); box-shadow: 0 0 8px rgba(34, 209, 138, 0.6); }
.dot-stale { background: var(--warn); }
.dot-err { background: var(--down); }
.dot-pending { background: var(--text-mute); animation: pulse 1.6s ease-in-out infinite; }
@keyframes pulse { 0%, 100% { opacity: 0.35; } 50% { opacity: 1; } }

/* ── controls (price input + breakeven) ────────────────────────────── */
.controls {
  display: grid;
  grid-template-columns: minmax(260px, 1fr) minmax(260px, 1fr);
  gap: 16px;
  padding: 20px 24px 8px;
  max-width: 1400px;
  margin: 0 auto;
}
.control {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 16px 18px;
}
.control label, .control .label {
  display: block;
  color: var(--text-mute);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 8px;
}
.price-row { display: flex; gap: 8px; align-items: center; }
.control input[type="number"] {
  flex: 1;
  background: var(--bg-elev);
  border: 1px solid var(--border-strong);
  border-radius: 10px;
  padding: 10px 14px;
  color: var(--text);
  font-family: var(--mono);
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -0.01em;
  outline: none;
  transition: border-color 0.15s;
}
.control input[type="number"]:focus { border-color: var(--accent); }
.control input[type="number"]::-webkit-outer-spin-button,
.control input[type="number"]::-webkit-inner-spin-button { margin: 0; }
#reset-price {
  background: var(--bg-elev);
  border: 1px solid var(--border-strong);
  color: var(--text-mute);
  border-radius: 10px;
  padding: 10px 14px;
  font-size: 16px;
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s;
}
#reset-price:hover { color: var(--text); border-color: var(--accent); }
.control .value {
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -0.01em;
  display: block;
  padding: 10px 0 4px;
}
.control .hint { color: var(--text-mute); font-size: 11px; margin: 4px 0 0; }

/* ── stat cards ────────────────────────────────────────────────────── */
.stats {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 12px;
  padding: 12px 24px 20px;
  max-width: 1400px;
  margin: 0 auto;
}
.stat {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.stat .k {
  color: var(--text-mute);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.07em;
}
.stat .v { font-size: 18px; font-weight: 600; }

/* ── table ─────────────────────────────────────────────────────────── */
.table-wrap {
  padding: 0 24px;
  max-width: 1400px;
  margin: 0 auto;
}
table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  overflow: hidden;
  font-size: 13px;
}
thead th {
  background: var(--bg-elev);
  border-bottom: 1px solid var(--border);
  text-align: left;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--text-mute);
  padding: 10px 14px;
  font-weight: 500;
  white-space: nowrap;
}
thead th.num { text-align: right; }
tbody td {
  padding: 11px 14px;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
tbody tr:last-child td { border-bottom: 0; }
tbody tr:hover td { background: rgba(255, 255, 255, 0.025); }
td.num { text-align: right; font-family: var(--mono); font-variant-numeric: tabular-nums; }
td.empty { text-align: center; color: var(--text-mute); padding: 28px 14px; }
td .badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 6px;
  font-size: 11px;
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-2);
}
td .badge.ok { background: rgba(34, 209, 138, 0.12); color: var(--up); }
td .badge.bad { background: rgba(239, 68, 68, 0.14); color: var(--down); }
.up { color: var(--up); }
.down { color: var(--down); }
.marker { margin-left: 6px; }

/* ── footer ────────────────────────────────────────────────────────── */
.foot {
  padding: 20px 24px 40px;
  max-width: 1400px;
  margin: 0 auto;
  color: var(--text-mute);
  font-size: 12px;
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.foot .sep { opacity: 0.5; }

/* ── mobile ────────────────────────────────────────────────────────── */
@media (max-width: 768px) {
  .topbar { padding: 14px 16px; }
  .brand h1 { font-size: 16px; }
  .brand .sub { display: none; }
  .controls { grid-template-columns: 1fr; padding: 16px 16px 8px; }
  .stats { grid-template-columns: repeat(2, 1fr); padding: 8px 16px 16px; }
  .stat .v { font-size: 16px; }
  .table-wrap { padding: 0 12px; }
  /* render table rows as cards on small screens */
  table, thead, tbody, th, td, tr { display: block; }
  thead { display: none; }
  tbody tr {
    background: var(--bg-panel);
    border: 1px solid var(--border);
    border-radius: 12px;
    margin: 0 0 10px;
    padding: 10px 12px;
  }
  tbody td {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px dashed var(--border);
    padding: 6px 0;
    white-space: normal;
  }
  tbody td:last-child { border-bottom: 0; }
  tbody td::before {
    content: attr(data-label);
    color: var(--text-mute);
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-right: 12px;
  }
  td.num { text-align: right; }
  .foot { padding: 16px; }
}

/* Table footer totals row (per-h 合计) */
tfoot tr.totals {
  background: rgba(255, 255, 255, 0.04);
  border-top: 2px solid rgba(255, 255, 255, 0.12);
}
tfoot tr.totals td {
  padding-top: 10px;
  padding-bottom: 10px;
  font-weight: 600;
}