:root {
  --bg: #0e1013;
  --surface: #14171c;
  --elev: #1b2028;
  --text: #e7ecf3;
  --muted: #a9b3c4;
  --brand: #34c759;
  --accent: #4aa3ff;
  --danger: #ff5e57;
  --border: #2a313b;
  --pill: #202733;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Arial, "Noto Sans", "Apple Color Emoji", "Segoe UI Emoji";
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

.container {
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 16px;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(20, 23, 28, 0.9);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.logo { color: #fff; text-decoration: none; font-weight: 700; font-size: 20px; }
.logo-dot { color: var(--brand); }

.main-nav { display: flex; align-items: center; gap: 16px; }
.nav-toggle { display: none; background: none; border: 1px solid var(--border); color: var(--text); border-radius: 8px; padding: 6px 10px; }
.menu { display: flex; list-style: none; gap: 12px; margin: 0; padding: 0; }
.menu a { color: var(--muted); text-decoration: none; padding: 8px 10px; border-radius: 8px; }
.menu a:hover { background: var(--pill); color: var(--text); }

.header-actions { display: flex; gap: 8px; }

/* Buttons */
.btn { background: var(--brand); color: #08110a; border: none; padding: 10px 14px; border-radius: 10px; font-weight: 600; cursor: pointer; }
.btn:hover { filter: brightness(1.05); }
.btn-secondary { background: var(--elev); color: var(--text); border: 1px solid var(--border); }
.btn-secondary:hover { background: #242b37; }
.btn-ghost { background: transparent; color: var(--text); border: 1px solid var(--border); }

.pill { display: inline-block; padding: 6px 12px; border-radius: 999px; background: var(--brand); color: #08110a; font-weight: 600; font-size: 13px; cursor: pointer; border: 1px solid transparent; }
.pill-outline { background: transparent; border: 1px solid var(--border); color: var(--muted); }

/* Tabs visibility */
[data-tab-content] { display: none; }
[data-tab-content].is-visible { display: block; }

/* Sections */
.hero { padding: 24px 0; border-bottom: 1px solid var(--border); background: linear-gradient(180deg, #101419, #0e1013 60%); }
.breadcrumbs { color: var(--muted); display: flex; gap: 8px; align-items: center; font-size: 14px; }
.breadcrumbs a { color: var(--muted); text-decoration: none; }
.breadcrumbs a:hover { color: var(--text); }
.meta-row { display: flex; gap: 8px; margin-top: 8px; }

.highlight-cards { padding: 24px 0; }
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.deal-card { background: var(--surface); border: 1px solid var(--border); padding: 18px; border-radius: 14px; box-shadow: 0 0 0 1px rgba(0,0,0,0.2) inset; }
.deal-badge { display: inline-block; background: var(--pill); color: var(--text); padding: 4px 8px; border-radius: 999px; font-size: 12px; border: 1px solid var(--border); margin-bottom: 8px; }
.deal-stats { color: var(--muted); font-size: 14px; display: flex; gap: 12px; margin-top: 8px; }

.howto { padding: 24px 0; }
.two-col { display: grid; grid-template-columns: 2fr 1fr; gap: 24px; }
.steps { margin: 0; padding-left: 20px; }
.tip-box { background: var(--surface); border: 1px solid var(--border); padding: 16px; border-radius: 12px; }

.codes-table { padding: 24px 0; }
.table-scroll { overflow-x: auto; border: 1px solid var(--border); border-radius: 12px; }
table { width: 100%; border-collapse: collapse; min-width: 680px; }
th, td { padding: 12px 14px; border-bottom: 1px solid var(--border); text-align: left; }
thead th { background: #12151a; color: var(--muted); font-weight: 600; }
.code { background: #0a0d11; border: 1px solid var(--border); padding: 2px 6px; border-radius: 6px; font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
.badge { display: inline-block; background: var(--pill); border: 1px solid var(--border); border-radius: 999px; padding: 2px 8px; font-size: 12px; color: var(--text); }

.faq { padding: 24px 0; }
.accordion details { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; margin-bottom: 10px; }
.accordion summary { cursor: pointer; padding: 12px 14px; list-style: none; }
.accordion .content { padding: 0 14px 14px; color: var(--muted); }

.reviews { padding: 24px 0; }
.empty-state { color: var(--muted); background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 16px; }
.review-form { margin-top: 12px; }
.review-row { display: flex; gap: 8px; }
.review-row input { flex: 1; background: #0b0f14; border: 1px solid var(--border); color: var(--text); border-radius: 10px; padding: 10px 12px; }

.site-footer { margin-top: 24px; border-top: 1px solid var(--border); background: #0c0f13; }
.footer-grid { display: grid; grid-template-columns: 2fr 2fr 1.5fr; gap: 24px; padding: 24px 0; }
.cols { columns: 2; margin: 0; padding-left: 16px; }
.auth-actions { display: flex; gap: 8px; flex-wrap: wrap; }
.footer-bottom { border-top: 1px solid var(--border); background: #0b0e12; }
.footer-bottom-inner { display: flex; justify-content: space-between; align-items: center; padding: 12px 0; color: var(--muted); }
.socials a { color: var(--muted); text-decoration: none; margin-left: 12px; }
.socials a:hover { color: var(--text); }

/* Modal */
.modal { position: fixed; inset: 0; display: none; align-items: center; justify-content: center; background: rgba(0,0,0,0.5); z-index: 100; }
.modal[aria-hidden="false"] { display: flex; }
.modal-dialog { width: 100%; max-width: 420px; background: var(--surface); border: 1px solid var(--border); border-radius: 14px; padding: 16px; box-shadow: 0 10px 30px rgba(0,0,0,0.3); }
.modal-close { position: absolute; margin-top: -8px; margin-left: 384px; background: transparent; border: none; color: var(--muted); font-size: 24px; cursor: pointer; }
.form label { display: grid; gap: 6px; margin-bottom: 10px; }
.form input { background: #0b0f14; border: 1px solid var(--border); color: var(--text); border-radius: 10px; padding: 10px 12px; }

/* A11y */
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 1px, 1px); white-space: nowrap; border: 0; }

/* Responsive */
@media (max-width: 900px) {
  .grid { grid-template-columns: 1fr 1fr; }
  .two-col { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .nav-toggle { display: inline-block; }
  .menu { display: none; position: absolute; top: 64px; right: 16px; background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 8px; flex-direction: column; min-width: 200px; }
  .menu[aria-expanded="true"] { display: flex; }
  .grid { grid-template-columns: 1fr; }
  .review-row { flex-direction: column; }
  .modal-close { position: static; margin: 0 0 8px auto; }
}