:root {
  --bg: #f4f5f7;
  --surface: #fff;
  --text: #1b1f24;
  --muted: #6b7280;
  --border: #e3e5e8;
  --accent: #2563eb;
  --great: #15803d;
  --great-bg: #dcfce7;
  --good: #0f766e;
  --good-bg: #ccfbf1;
  --neutral: #4b5563;
  --neutral-bg: #eceef1;
  --wait: #b45309;
  --wait-bg: #fef3c7;
  --down: #15803d;
  --up: #dc2626;
  --radius: 12px;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1115;
    --surface: #181b21;
    --text: #e8eaed;
    --muted: #9aa0a8;
    --border: #2a2e36;
    --accent: #60a5fa;
    --great: #4ade80;
    --great-bg: #12301d;
    --good: #2dd4bf;
    --good-bg: #0f2e2b;
    --neutral: #c0c5cc;
    --neutral-bg: #262a31;
    --wait: #fbbf24;
    --wait-bg: #33270d;
    --down: #4ade80;
    --up: #f87171;
  }
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
body {
  margin: 0;
  font: 15px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
}
main { max-width: 1200px; margin: 0 auto; padding: 0 20px 48px; }
h1 { font-size: 1.25rem; margin: 0; }
h2 { font-size: 1.05rem; margin: 0; }
a { color: var(--accent); }
.muted { color: var(--muted); font-size: 0.875rem; }

.topbar {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 14px 20px; background: var(--surface); border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 5;
}
.topbar-actions { display: flex; align-items: center; gap: 12px; }

input, select {
  font: inherit; color: inherit; background: var(--bg);
  border: 1px solid var(--border); border-radius: 8px; padding: 9px 12px; min-width: 0;
}
input:focus, select:focus { outline: 2px solid var(--accent); outline-offset: -1px; }

.btn {
  font: inherit; cursor: pointer; border-radius: 8px; padding: 9px 14px;
  border: 1px solid var(--border); background: var(--surface); color: var(--text); white-space: nowrap;
}
.btn:hover { border-color: var(--muted); }
.btn:disabled { opacity: 0.6; cursor: progress; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.danger { color: var(--up); }
.btn.small { padding: 5px 10px; font-size: 0.85rem; }

.panel {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 16px; margin: 20px 0;
}
.add-form { display: grid; grid-template-columns: 1fr 190px auto; gap: 10px; }
.advanced { grid-column: 1 / -1; }
.advanced summary { cursor: pointer; color: var(--muted); font-size: 0.875rem; }
.advanced-fields { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 10px; }
.status { margin: 10px 0 0; font-size: 0.9rem; min-height: 1.2em; }
.status.error { color: var(--up); }
.status:empty { display: none; }

.bookmarklet-box { margin-top: 12px; border-top: 1px solid var(--border); padding-top: 12px; }
.bookmarklet-box summary { cursor: pointer; font-size: 0.9rem; font-weight: 500; }
.bookmarklet-body { display: grid; grid-template-columns: auto 1fr; gap: 6px 20px; align-items: start; margin-top: 12px; }
.bookmarklet-body ol { margin: 0; padding-left: 20px; font-size: 0.9rem; }
.bookmarklet-body p { grid-column: 1 / -1; margin: 4px 0 0; }
.bookmarklet {
  display: inline-block; padding: 9px 14px; border-radius: 8px; background: #ffe600; color: #2d3277;
  font-weight: 700; text-decoration: none; cursor: grab; border: 1px dashed #2d3277; white-space: nowrap;
}
kbd { font: 0.8em ui-monospace, monospace; border: 1px solid var(--border); border-radius: 4px; padding: 1px 5px; background: var(--bg); }
.toolbar { display: flex; justify-content: space-between; align-items: center; margin: 8px 0 14px; gap: 12px; }
.toolbar select { margin-left: 6px; padding: 6px 10px; }

.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 16px; }
.empty { text-align: center; color: var(--muted); padding: 48px 0; }

.card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 14px; display: flex; flex-direction: column; gap: 10px; cursor: pointer;
  transition: border-color 0.15s, transform 0.15s;
}
.card:hover { border-color: var(--accent); transform: translateY(-1px); }
.card-head { display: flex; gap: 12px; }
.card-head > div:last-child { min-width: 0; }
.thumb {
  width: 64px; height: 64px; flex: none; border-radius: 8px; object-fit: contain;
  background: #fff; border: 1px solid var(--border);
}
.thumb.placeholder { display: grid; place-items: center; font-size: 1.6rem; background: var(--bg); }
.card-title {
  font-weight: 600; margin: 0; overflow-wrap: anywhere; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.price-row { display: flex; align-items: baseline; justify-content: space-between; gap: 8px; }
.price { font-size: 1.5rem; font-weight: 700; letter-spacing: -0.01em; }
.change { font-size: 0.85rem; font-weight: 600; }
.change.down { color: var(--down); }
.change.up { color: var(--up); }

.badge {
  display: inline-flex; align-items: center; gap: 6px; font-size: 0.8rem; font-weight: 600;
  padding: 3px 10px; border-radius: 999px; width: fit-content;
}
.badge.great { color: var(--great); background: var(--great-bg); }
.badge.good { color: var(--good); background: var(--good-bg); }
.badge.neutral, .badge.unknown { color: var(--neutral); background: var(--neutral-bg); }
.badge.wait { color: var(--wait); background: var(--wait-bg); }

.spark { width: 100%; height: 44px; display: block; }
.spark.great { color: var(--great); } .spark.good { color: var(--good); }
.spark.neutral, .spark.unknown { color: var(--muted); } .spark.wait { color: var(--wait); }

.mini-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 6px; font-size: 0.8rem; }
.mini-stats div { background: var(--bg); border-radius: 8px; padding: 6px 8px; }
.mini-stats b { display: block; font-size: 0.85rem; }
.card-foot { display: flex; justify-content: space-between; font-size: 0.8rem; color: var(--muted); gap: 8px; }
.error-line { font-size: 0.8rem; color: var(--up); margin: 0; }

dialog {
  width: min(900px, calc(100vw - 32px)); max-height: calc(100vh - 48px); padding: 0;
  border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface); color: var(--text);
}
dialog::backdrop { background: rgb(0 0 0 / 0.45); }
.detail { padding: 20px; display: flex; flex-direction: column; gap: 16px; }
.detail-head { display: flex; gap: 14px; align-items: flex-start; }
.detail-head .thumb { width: 84px; height: 84px; }
.detail-head h2 { font-size: 1.15rem; overflow-wrap: anywhere; }
.detail-head .close { margin-left: auto; }
.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(130px, 1fr)); gap: 10px; }
.stat { background: var(--bg); border-radius: 10px; padding: 10px 12px; }
.stat span { font-size: 0.78rem; color: var(--muted); display: block; }
.stat b { font-size: 1.1rem; }
.reco { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.chart-wrap { position: relative; height: 280px; }
.forms { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.forms form { display: flex; flex-direction: column; gap: 8px; background: var(--bg); padding: 12px; border-radius: 10px; }
.forms form input { background: var(--surface); }
.forms h3 { font-size: 0.9rem; margin: 0; }
.row { display: flex; gap: 8px; flex-wrap: wrap; }
.row input { flex: 1; }
table { width: 100%; border-collapse: collapse; font-size: 0.875rem; }
th, td { text-align: left; padding: 6px 8px; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-weight: 500; }
.history { max-height: 240px; overflow: auto; }

@media (max-width: 720px) {
  .add-form, .advanced-fields, .forms, .bookmarklet-body { grid-template-columns: 1fr; }
  .topbar { flex-wrap: wrap; }
  #schedule-info { display: none; }
}

/* ---------- login ---------- */
.auth { display: grid; place-items: center; padding: 48px 20px; }
.auth-card { width: min(400px, 100%); margin: 0; padding: 28px; }
.auth-card h2 { font-size: 1.3rem; margin-bottom: 4px; }
.auth-card .muted { margin: 0 0 18px; }
.stack { display: flex; flex-direction: column; gap: 10px; }
.auth-switch { margin: 16px 0 0; font-size: 0.9rem; text-align: center; }
#settings form { display: flex; flex-direction: column; gap: 8px; background: var(--bg); padding: 12px; border-radius: 10px; }
#settings form input { background: var(--surface); }
#settings label { display: flex; flex-direction: column; gap: 4px; }
#settings h3 { font-size: 0.9rem; margin: 0; }
#settings code { font-size: 0.85em; }

/* Comparação de anúncios do mesmo produto. */
.group-card { cursor: default; }
.offer-list { display: flex; flex-direction: column; gap: 8px; }
.offer-button { display: flex; justify-content: space-between; gap: 10px; align-items: center; width: 100%; padding: 10px; border: 1px solid var(--border); border-radius: 8px; background: var(--bg); color: var(--text); text-align: left; font: inherit; cursor: pointer; }
.offer-button:hover, .offer-button:focus-visible { border-color: var(--accent); }
.offer-button.best-offer { border-color: var(--great); }
.offer-button > span { min-width: 0; }
.offer-button b, .offer-button small, .offer-name { display: block; font-size: 0.8rem; overflow-wrap: anywhere; }
.offer-button small { color: var(--muted); }
.offer-name { margin: 3px 0; }
.offer-button strong { flex: none; }
.group-form { display: flex; flex-direction: column; gap: 8px; background: var(--bg); padding: 12px; border-radius: 10px; }
.group-form h3, .group-form p { margin: 0; }
.group-form select { flex: 1; min-width: 0; max-width: 100%; }
@media (max-width: 480px) { .group-form .row { flex-direction: column; } .offer-button { flex-wrap: wrap; } }

.product-assignment { grid-column: 1 / -1; display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.product-assignment label { display: flex; flex-direction: column; gap: 4px; }
@media (max-width: 720px) { .product-assignment { grid-template-columns: 1fr; } }

.toolbar { flex-wrap: wrap; }