:root {
  --bg: #f5ede2;
  --surface: #ffffff;
  --surface-2: #faf5ee;
  --border: #e6d7c3;
  --text: #2e2118;
  --muted: #86705e;
  --primary: #8b5a2b;
  --bar: #2e2118;
  --bar-text: #f5ede2;
  --danger: #c0392b;
  --warn: #b7791f;
  --radius: 14px;
  --shadow: 0 1px 2px rgba(46, 33, 24, 0.06), 0 4px 14px rgba(46, 33, 24, 0.05);
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #17110c;
    --surface: #221a14;
    --surface-2: #2b211a;
    --border: #3a2d22;
    --text: #f1e6d8;
    --muted: #b49c86;
    --primary: #c48a52;
    --bar: #0f0b08;
    --bar-text: #f1e6d8;
    --danger: #ef6b5b;
    --warn: #e0a84a;
    --shadow: none;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: 'IBM Plex Sans Thai', system-ui, -apple-system, 'Segoe UI', sans-serif;
  font-size: 15px;
  line-height: 1.45;
  -webkit-text-size-adjust: 100%;
  padding-bottom: env(safe-area-inset-bottom);
}
button, input, textarea { font: inherit; color: inherit; }
.hidden { display: none !important; }

/* ---- top bar ---- */
.bar {
  position: sticky; top: 0; z-index: 10;
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  background: var(--bar); color: var(--bar-text);
  padding: calc(10px + env(safe-area-inset-top)) 16px 10px;
}
.bar-title { display: flex; align-items: center; gap: 10px; min-width: 0; }
.bar-icon { width: 34px; height: 34px; border-radius: 9px; }
.bar-name { font-weight: 700; font-size: 17px; }
.bar-sub { font-size: 12px; opacity: 0.7; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.bar-actions { display: flex; gap: 6px; }
.icon-btn {
  width: 42px; height: 42px; border-radius: 12px; border: 0;
  background: rgba(255, 255, 255, 0.08); color: var(--bar-text);
  display: grid; place-items: center; cursor: pointer;
}
.icon-btn:active { background: rgba(255, 255, 255, 0.18); }
.icon-btn.spinning svg { animation: spin 0.9s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

.wrap { max-width: 1040px; margin: 0 auto; padding: 14px 16px 32px; }

/* ---- chips ---- */
.chips { display: flex; gap: 6px; overflow-x: auto; padding: 2px 0 6px; margin-bottom: 8px; scrollbar-width: none; }
.chips::-webkit-scrollbar { display: none; }
.chip {
  flex-shrink: 0; border: 1px solid var(--border); background: var(--surface);
  border-radius: 999px; padding: 8px 14px; min-height: 40px; cursor: pointer; white-space: nowrap;
}
.chip.active { background: var(--primary); border-color: var(--primary); color: #fff; font-weight: 600; }
.custom-range { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; margin-bottom: 8px; }
.custom-range input { padding: 8px; border: 1px solid var(--border); border-radius: 10px; background: var(--surface); min-height: 40px; }
.range-label { font-size: 13px; color: var(--muted); margin-bottom: 8px; }

/* ---- status pills ---- */
.status-row { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 14px; }
.pill { display: inline-flex; align-items: center; gap: 6px; font-size: 12.5px; padding: 4px 10px; border-radius: 999px; background: var(--surface); border: 1px solid var(--border); }
.pill.off { color: var(--danger); }
.pill.stale { color: var(--warn); }
.dot { width: 9px; height: 9px; border-radius: 50%; flex-shrink: 0; display: inline-block; }

/* ---- KPIs ---- */
.kpis { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin-bottom: 14px; }
.kpi { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 12px 14px; box-shadow: var(--shadow); }
.kpi-main { grid-column: 1 / -1; background: var(--primary); border-color: var(--primary); color: #fff; }
.kpi-label { font-size: 13px; color: var(--muted); }
.kpi-main .kpi-label { color: rgba(255, 255, 255, 0.8); }
.kpi { padding: 10px 12px; min-width: 0; }
.kpi-value { font-size: 17px; font-weight: 700; font-variant-numeric: tabular-nums; margin-top: 2px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.kpi-label { font-size: 12px; }
.kpi-main { padding: 14px 16px; }
.kpi-main .kpi-label { font-size: 13px; }
.kpi-main .kpi-value { font-size: 30px; }
@media (min-width: 760px) {
  .kpis { grid-template-columns: 2fr 1fr 1fr 1fr; }
  .kpi-value { font-size: 22px; }
  .kpi-main { grid-column: auto; }
}

/* ---- cards ---- */
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 14px 16px; margin-bottom: 14px; box-shadow: var(--shadow); }
.card h3 { margin: 0 0 10px; font-size: 16px; }
.grid2 { display: grid; grid-template-columns: 1fr; gap: 0 14px; }
@media (min-width: 760px) { .grid2 { grid-template-columns: 1fr 1fr; } }
.empty { color: var(--muted); font-size: 13px; text-align: center; padding: 12px 0; }
.note { font-size: 12.5px; color: var(--muted); margin-top: 8px; }

/* shop comparison */
.shop-row { padding: 10px 0; border-bottom: 1px solid var(--border); }
.shop-row:last-child { border-bottom: 0; }
.shop-head { display: flex; justify-content: space-between; align-items: baseline; gap: 8px; }
.shop-name { display: flex; align-items: center; gap: 8px; font-weight: 600; min-width: 0; }
.shop-name span:last-child { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.shop-rev { font-weight: 700; white-space: nowrap; font-variant-numeric: tabular-nums; }
.shop-sub { font-size: 12.5px; color: var(--muted); margin-top: 4px; }
.shop-err { font-size: 12.5px; color: var(--danger); margin-top: 4px; }
.shop-stale { font-size: 12.5px; color: var(--warn); margin-top: 4px; }

/* bars */
.track { background: var(--surface-2); border-radius: 999px; height: 10px; overflow: hidden; margin-top: 6px; }
.fill { height: 100%; border-radius: 999px; background: var(--primary); }
.bar-row { margin-bottom: 12px; }
.bar-row:last-child { margin-bottom: 0; }
.bar-label { display: flex; justify-content: space-between; gap: 8px; font-size: 14px; }
.bar-label b { font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.bar-label span { color: var(--muted); white-space: nowrap; font-variant-numeric: tabular-nums; }
.bar-sub { font-size: 12px; color: var(--muted); margin-top: 3px; }

/* top products */
.prod { display: grid; grid-template-columns: 26px 1fr auto; gap: 8px; align-items: center; padding: 9px 0; border-bottom: 1px solid var(--border); }
.prod:last-child { border-bottom: 0; }
.prod-rank { color: var(--muted); font-weight: 700; text-align: center; }
.prod-name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.prod-qty { font-size: 12px; color: var(--muted); }
.prod-rev { font-weight: 700; font-variant-numeric: tabular-nums; }

/* charts */
.chart { width: 100%; height: auto; display: block; }
.chart text { fill: var(--muted); font-size: 18px; font-family: inherit; }
.chart .grid { stroke: var(--border); stroke-width: 1; }
.legend { display: flex; flex-wrap: wrap; gap: 12px; font-size: 12.5px; color: var(--muted); margin-top: 8px; }
.legend i { display: inline-block; width: 10px; height: 10px; border-radius: 3px; margin-right: 5px; vertical-align: -1px; }

/* ---- empty state ---- */
.empty-state { text-align: center; padding: 36px 12px; }
.empty-state h2 { margin: 0 0 8px; }
.empty-state p { color: var(--muted); max-width: 420px; margin: 0 auto 18px; }

/* ---- buttons & forms ---- */
.btn { border: 1px solid var(--border); background: var(--surface); border-radius: 12px; padding: 9px 14px; min-height: 42px; cursor: pointer; }
.btn.primary { background: var(--primary); border-color: var(--primary); color: #fff; font-weight: 600; }
.btn.danger { color: var(--danger); }
.btn:disabled { opacity: 0.6; }
.btn-row { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 10px; }
.settings-head { display: flex; align-items: center; gap: 12px; margin-bottom: 6px; }
.settings-head h2 { margin: 0; font-size: 20px; }
.help { color: var(--muted); font-size: 13.5px; }
.shop-form { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 12px 14px; margin-bottom: 12px; border-left-width: 5px; }
.shop-form label { display: block; font-size: 12.5px; color: var(--muted); margin: 8px 0 3px; }
.shop-form input, textarea {
  width: 100%; padding: 10px 12px; border: 1px solid var(--border); border-radius: 10px;
  background: var(--surface-2); min-height: 44px; font-size: 16px; /* 16px stops iOS zoom-on-focus */
}
textarea { margin: 10px 0 8px; resize: vertical; }

/* ---- toasts ---- */
#toasts { position: fixed; left: 50%; bottom: calc(18px + env(safe-area-inset-bottom)); transform: translateX(-50%); display: grid; gap: 8px; z-index: 50; width: min(92vw, 420px); }
.toast { background: var(--bar); color: var(--bar-text); padding: 11px 14px; border-radius: 12px; font-size: 14px; box-shadow: 0 6px 20px rgba(0, 0, 0, 0.25); }
.toast.error { background: var(--danger); color: #fff; }
.toast.success { background: #2f7d55; color: #fff; }