:root {
  --bg: #0b0d12;
  --surface: #151821;
  --surface-2: #1d212c;
  --border: #2a2f3d;
  --text: #eef0f4;
  --text-muted: #9aa2b1;
  --accent: #f97316;
  --accent-text: #1a0f00;

  --tier-confirmed: #a855f7;
  --tier-high: #ef4444;
  --tier-medium: #f59e0b;
  --tier-low: #6b7280;

  --radius: 14px;
  --gap: 12px;
  --safe-top: env(safe-area-inset-top, 0px);
  --safe-bottom: env(safe-area-inset-bottom, 0px);
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f5f6f8;
    --surface: #ffffff;
    --surface-2: #f0f1f4;
    --border: #e2e4ea;
    --text: #14161c;
    --text-muted: #62697a;
    --accent: #ea580c;
    --accent-text: #ffffff;
  }
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-text-size-adjust: 100%;
  overflow-x: hidden;
}

body {
  padding-bottom: calc(24px + var(--safe-bottom));
}

img { max-width: 100%; display: block; }

button, select, input {
  font: inherit;
  color: inherit;
}

.muted { color: var(--text-muted); }

/* ---------- Header ---------- */

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: calc(10px + var(--safe-top)) 14px 0 14px;
}

.topbar-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.store-info h1 {
  font-size: 1.05rem;
  line-height: 1.25;
  margin: 0;
  font-weight: 700;
}

.store-info .muted {
  margin: 2px 0 0 0;
  font-size: 0.8rem;
}

.scan-status {
  margin: 8px 0 0 0;
  font-size: 0.85rem;
  color: var(--accent);
}

.tabs {
  display: flex;
  gap: 4px;
  margin-top: 10px;
}

.tab {
  flex: 1;
  background: none;
  border: none;
  border-bottom: 3px solid transparent;
  padding: 10px 4px;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-muted);
  cursor: pointer;
}

.tab.active {
  color: var(--text);
  border-bottom-color: var(--accent);
}

/* ---------- Buttons ---------- */

.btn {
  border: none;
  border-radius: 999px;
  padding: 12px 18px;
  font-weight: 700;
  font-size: 0.92rem;
  cursor: pointer;
  white-space: nowrap;
  min-height: 44px;
}

.btn-primary {
  background: var(--accent);
  color: var(--accent-text);
}

.btn-primary:disabled {
  opacity: 0.6;
}

/* ---------- Controls ---------- */

.controls {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding: 12px 14px 4px 14px;
}

.control {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 0.75rem;
  color: var(--text-muted);
  flex: 1 1 120px;
}

.control select {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px;
  min-height: 44px;
  color: var(--text);
}

.toggle-control {
  flex-direction: row;
  align-items: center;
  justify-content: space-between;
  flex: 1 1 160px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 12px;
}

.toggle-control input[type="checkbox"] {
  width: 22px;
  height: 22px;
}

.list-meta {
  padding: 4px 14px;
  margin: 6px 0 0 0;
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ---------- Panels / tabs ---------- */

.panel { display: none; }
.panel.active { display: block; }

/* ---------- Cards ---------- */

.card-list {
  display: flex;
  flex-direction: column;
  gap: var(--gap);
  padding: 10px 14px 14px 14px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px;
  display: flex;
  gap: 12px;
}

.card-media {
  flex: 0 0 84px;
  width: 84px;
  height: 84px;
  border-radius: 10px;
  background: var(--surface-2);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.card-media img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.card-media .no-image {
  font-size: 1.6rem;
  color: var(--text-muted);
}

.card-body {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.card-title-link {
  color: var(--text);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  line-height: 1.3;
  display: block;
}

.card-title-link:active { opacity: 0.7; }

.badge-row {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}

.tier-badge {
  display: inline-block;
  padding: 3px 9px;
  border-radius: 999px;
  font-size: 0.7rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  color: #fff;
}

.tier-confirmed { background: var(--tier-confirmed); }
.tier-high { background: var(--tier-high); }
.tier-medium { background: var(--tier-medium); color: #241a00; }
.tier-low { background: var(--tier-low); }

.score-text {
  font-size: 0.78rem;
  color: var(--text-muted);
  font-weight: 600;
}

.price-row {
  display: flex;
  align-items: baseline;
  gap: 8px;
  flex-wrap: wrap;
}

.price-now {
  font-size: 1.05rem;
  font-weight: 800;
}

.price-was {
  font-size: 0.82rem;
  color: var(--text-muted);
  text-decoration: line-through;
}

.percent-off {
  font-size: 0.8rem;
  font-weight: 700;
  color: #22c55e;
}

.aisle-bay {
  font-size: 0.92rem;
  font-weight: 700;
  padding: 6px 10px;
  border-radius: 8px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  display: inline-block;
  width: fit-content;
}

.aisle-bay.unknown {
  color: var(--text-muted);
  font-weight: 500;
}

.meta-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  font-size: 0.75rem;
  color: var(--text-muted);
}

.meta-row span strong {
  color: var(--text);
  font-weight: 600;
}

.reasons-row {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
  margin-top: 2px;
}

.reason-chip {
  font-size: 0.68rem;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 3px 8px;
  color: var(--text-muted);
}

.stock-flag {
  font-weight: 700;
}

.stock-flag.in { color: #22c55e; }
.stock-flag.out { color: var(--tier-high); }

.empty-state {
  text-align: center;
  color: var(--text-muted);
  padding: 40px 24px;
  font-size: 0.95rem;
  line-height: 1.5;
}

/* Confirmed-specific */

.confirmed-source {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--text-muted);
  font-weight: 700;
}

@media (min-width: 640px) {
  #app { max-width: 680px; margin: 0 auto; }
  .topbar-row, .tabs, .controls, .card-list, .list-meta { max-width: 680px; margin-left: auto; margin-right: auto; }
}