:root {
  --bg: #0b1220;
  --bg-2: #111a2e;
  --surface: #162038;
  --surface-2: #1c2945;
  --ink: #e8eefc;
  --muted: #9aabcb;
  --line: rgba(232, 238, 252, 0.1);
  --accent: #3dd6c6;
  --accent-2: #2bb3a5;
  --accent-soft: rgba(61, 214, 198, 0.14);
  --warn: #f0b429;
  --danger: #ff7b72;
  --amazon: #ff9900;
  --ml: #ffe600;
  --shopee: #ee4d2d;
  --radius: 18px;
  --radius-sm: 12px;
  --shadow: 0 18px 48px rgba(0, 0, 0, 0.35);
  --font: "DM Sans", system-ui, sans-serif;
  --display: "Syne", system-ui, sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
body {
  font-family: var(--font);
  color: var(--ink);
  background:
    radial-gradient(ellipse 70% 45% at 10% -10%, rgba(61, 214, 198, 0.18), transparent 55%),
    radial-gradient(ellipse 55% 40% at 100% 0%, rgba(255, 153, 0, 0.1), transparent 50%),
    linear-gradient(180deg, #0d1528 0%, var(--bg) 40%, #08101c 100%);
  line-height: 1.45;
  -webkit-font-smoothing: antialiased;
  min-height: 100dvh;
}

#app { min-height: 100dvh; }

.shell {
  max-width: 980px;
  margin: 0 auto;
  padding: 22px 16px 56px;
}

.topbar {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 18px;
}
.brand {
  font-family: var(--display);
  font-size: clamp(1.45rem, 4.5vw, 1.95rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  margin: 0;
}
.brand span { color: var(--accent); }
.brand-sub {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 0.92rem;
}
.portal-link {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.86rem;
  font-weight: 600;
  border: 1px solid var(--line);
  padding: 8px 12px;
  border-radius: 999px;
  white-space: nowrap;
}
.portal-link:hover { color: var(--ink); border-color: rgba(61, 214, 198, 0.35); }

.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}

.tabs {
  display: inline-flex;
  gap: 4px;
  padding: 4px;
  background: rgba(17, 26, 46, 0.85);
  border: 1px solid var(--line);
  border-radius: 999px;
}
.tab {
  border: 0;
  background: transparent;
  color: var(--muted);
  font: inherit;
  font-weight: 700;
  font-size: 0.9rem;
  padding: 10px 16px;
  border-radius: 999px;
  cursor: pointer;
}
.tab.active {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #06221f;
}

.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}
.filter-chip {
  border: 1px solid var(--line);
  background: var(--bg-2);
  color: var(--muted);
  font: inherit;
  font-size: 0.82rem;
  font-weight: 600;
  padding: 8px 12px;
  border-radius: 999px;
  cursor: pointer;
}
.filter-chip.active {
  color: var(--ink);
  border-color: rgba(61, 214, 198, 0.45);
  background: var(--accent-soft);
}

.btn {
  border: 0;
  border-radius: var(--radius-sm);
  padding: 10px 16px;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #06221f;
}
.btn:disabled { opacity: 0.55; cursor: wait; }
.btn-ghost {
  background: transparent;
  color: var(--muted);
  border: 1px solid var(--line);
}
.btn-ghost:hover { color: var(--ink); }

.meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 16px;
  color: var(--muted);
  font-size: 0.82rem;
  margin-bottom: 14px;
}

.list {
  display: grid;
  gap: 12px;
}

.card {
  background: linear-gradient(160deg, rgba(22, 32, 56, 0.95), rgba(17, 26, 46, 0.9));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px 16px;
  box-shadow: var(--shadow);
}
.card-head {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
}
.store-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  padding: 5px 10px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(0, 0, 0, 0.2);
}
.store-badge.amazon { color: var(--amazon); border-color: rgba(255, 153, 0, 0.35); }
.store-badge.mercado-livre { color: #f5e56b; border-color: rgba(255, 230, 0, 0.3); }
.store-badge.shopee { color: #ff7a63; border-color: rgba(238, 77, 45, 0.4); }

.code-pill {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.04em;
  color: var(--accent);
  background: var(--accent-soft);
  border: 1px dashed rgba(61, 214, 198, 0.45);
  padding: 6px 10px;
  border-radius: 10px;
  cursor: pointer;
}
.code-pill.muted {
  color: var(--muted);
  border-style: solid;
  cursor: default;
  background: transparent;
}

.card-title {
  margin: 0 0 6px;
  font-size: 1.02rem;
  font-weight: 700;
}
.card-desc {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
}
.card-foot {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  justify-content: space-between;
  margin-top: 12px;
}
.validity {
  font-size: 0.8rem;
  color: var(--warn);
}
.card-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.btn-sm {
  padding: 8px 12px;
  font-size: 0.84rem;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
}

.offer-row {
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: 12px;
  align-items: start;
}
.offer-thumb {
  width: 72px;
  height: 72px;
  border-radius: 12px;
  object-fit: cover;
  background: var(--bg-2);
  border: 1px solid var(--line);
}
.offer-thumb.placeholder {
  display: grid;
  place-items: center;
  color: var(--muted);
  font-size: 0.7rem;
  text-align: center;
  padding: 6px;
}
.price-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: baseline;
  margin-top: 6px;
}
.price {
  font-weight: 800;
  font-size: 1.15rem;
  color: var(--accent);
}
.old-price {
  color: var(--muted);
  text-decoration: line-through;
  font-size: 0.88rem;
}
.pct {
  font-size: 0.78rem;
  font-weight: 700;
  color: #06221f;
  background: var(--accent);
  padding: 3px 8px;
  border-radius: 999px;
}

.empty, .error, .loading {
  text-align: center;
  padding: 36px 16px;
  color: var(--muted);
  border: 1px dashed var(--line);
  border-radius: var(--radius);
  background: rgba(17, 26, 46, 0.45);
}
.error { color: var(--danger); border-color: rgba(255, 123, 114, 0.35); }

.store-section {
  margin-bottom: 18px;
}
.store-section h2 {
  font-family: var(--display);
  font-size: 1.05rem;
  margin: 0 0 10px;
  letter-spacing: -0.02em;
}
.store-note {
  font-size: 0.85rem;
  color: var(--muted);
  margin: 0 0 10px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  background: rgba(240, 180, 41, 0.08);
  border: 1px solid rgba(240, 180, 41, 0.22);
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  transform: translateX(-50%) translateY(20px);
  background: var(--surface-2);
  color: var(--ink);
  border: 1px solid rgba(61, 214, 198, 0.35);
  padding: 10px 16px;
  border-radius: 999px;
  font-size: 0.88rem;
  font-weight: 600;
  opacity: 0;
  pointer-events: none;
  transition: 0.25s ease;
  z-index: 20;
}
.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

@media (max-width: 640px) {
  .toolbar { align-items: stretch; }
  .tabs { width: 100%; justify-content: stretch; }
  .tab { flex: 1; text-align: center; }
  .filters { width: 100%; }
}