/* Mirrorfox — landing page. Bảng màu lấy từ app (app_color_scheme.dart) để
   web và app cùng nhận diện. CHỈ dark — trang chủ đã cố định dark (xem index.html),
   các trang phụ phải khớp, không thì bấm sang là chói mắt. */
:root {
  --bg: #0a0b0d;
  --surface: #17181c;
  --surface-2: #1f2126;
  --surface-3: #26282e;
  --border: #2a2d33;
  --text: #f3f4f6;
  --text-2: #a9b0bc;
  --text-3: #6b7280;
  --accent: #4c8dff;
  --accent-soft: #1b2a47;
  --premium: #ffd166;
  --premium-soft: #332c15;
  --success: #34d399;
  --radius: 14px;
  --maxw: 1080px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto,
    "Helvetica Neue", Arial, sans-serif;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

/* ── Nav ─────────────────────────────────────────────────────────── */
header.nav {
  position: sticky; top: 0; z-index: 20;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.nav-in { display: flex; align-items: center; gap: 20px; height: 62px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; color: var(--text); }
.brand:hover { text-decoration: none; }
.brand svg { width: 26px; height: 26px; }
.nav-links { display: flex; gap: 20px; margin-left: auto; align-items: center; }
.nav-links a { color: var(--text-2); font-size: 14.5px; }
.nav-links a:hover { color: var(--text); text-decoration: none; }
.lang {
  display: inline-flex; border: 1px solid var(--border);
  border-radius: 999px; overflow: hidden; background: var(--surface-2);
}
.lang button {
  border: 0; background: transparent; color: var(--text-2);
  font: inherit; font-size: 13px; padding: 5px 11px; cursor: pointer;
}
.lang button[aria-pressed="true"] { background: var(--accent); color: #fff; }


/* Video minh hoạ chèn giữa nội dung trang hướng dẫn. */
.guide-video {
  display: block;
  width: 100%;
  max-width: 420px;
  margin: 18px 0 6px;
  border-radius: 12px;
  border: 1px solid var(--border);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.25);
}
.guide-video + .cap { color: var(--text-3); font-size: 13px; margin: 0 0 8px; }

/* ── Legal pages ─────────────────────────────────────────────────── */
.legal { padding: 56px 0 72px; max-width: 760px; }
.legal h1 { font-size: 32px; margin: 0 0 6px; }
.legal .updated { color: var(--text-3); font-size: 14px; margin-bottom: 34px; }
.legal h2 { font-size: 19px; margin: 32px 0 10px; }
.legal p, .legal li { color: var(--text-2); font-size: 15px; }
.legal ul { padding-left: 20px; }
.legal .todo {
  background: var(--premium-soft); border: 1px solid color-mix(in srgb, var(--premium) 40%, transparent);
  color: var(--text); padding: 12px 14px; border-radius: 10px; font-size: 14px;
}

/* ── Footer ──────────────────────────────────────────────────────── */
footer {
  border-top: 1px solid var(--border); padding: 34px 0 48px;
  color: var(--text-3); font-size: 14px;
}
.foot-in { display: flex; gap: 18px; flex-wrap: wrap; align-items: center; }
.foot-in .links { display: flex; gap: 18px; margin-left: auto; flex-wrap: wrap; }
.foot-in a { color: var(--text-2); }