:root {
  --bg: #0f1115;
  --panel: #171a21;
  --border: #2a2e38;
  --text: #e6e8eb;
  --text-dim: #9aa1ac;
  --accent: #4f9dff;
  --longchau: #00a651;
  --ankhang: #ffb400;
  --hasaki: #ff5a8c;
  --ok: #3ecf8e;
  --danger: #ff6b6b;
}
@media (prefers-color-scheme: light) {
  :root {
    --bg: #f5f6f8;
    --panel: #ffffff;
    --border: #e1e4e9;
    --text: #14171f;
    --text-dim: #5b6270;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
}

header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

header h1 {
  font-size: 18px;
  margin: 0;
}

nav {
  display: flex;
  gap: 8px;
}

nav button {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-dim);
  padding: 6px 14px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 14px;
}

nav button.active {
  background: var(--accent);
  border-color: var(--accent);
  color: white;
}

main {
  padding: 20px 24px;
  max-width: 1200px;
  margin: 0 auto;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px;
  margin-bottom: 16px;
}

.filters {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  align-items: center;
}

.filters input, .filters select {
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 8px 10px;
  border-radius: 6px;
  font-size: 14px;
}

.filters input[type="text"] { flex: 1; min-width: 200px; }

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

th, td {
  text-align: left;
  padding: 10px 8px;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}

th { color: var(--text-dim); font-weight: 600; font-size: 12px; text-transform: uppercase; }

.table-wrap { overflow-x: auto; }

.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 600;
  color: white;
}
.badge.longchau { background: var(--longchau); }
.badge.ankhang { background: var(--ankhang); color: #241a00; }
.badge.hasaki { background: var(--hasaki); }

.price { font-weight: 600; }
.price.na { color: var(--text-dim); font-weight: 400; font-style: italic; }

.rx {
  font-size: 11px;
  color: var(--danger);
  border: 1px solid var(--danger);
  padding: 1px 6px;
  border-radius: 4px;
}

.pager {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 12px;
  color: var(--text-dim);
  font-size: 13px;
}

.pager button {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
  padding: 6px 12px;
  border-radius: 6px;
  cursor: pointer;
}
.pager button:disabled { opacity: 0.4; cursor: default; }

.compare-cols {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}
@media (max-width: 800px) {
  .compare-cols { grid-template-columns: 1fr; }
}

.compare-col h3 { margin: 0 0 10px; font-size: 14px; }
.compare-item {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px;
  margin-bottom: 8px;
}
.compare-item .name { font-size: 13px; margin-bottom: 4px; }
.compare-item a { color: var(--accent); text-decoration: none; font-size: 12px; }

.empty { color: var(--text-dim); text-align: center; padding: 40px 0; }
.footer-note { color: var(--text-dim); font-size: 12px; margin-top: 24px; text-align: center; }