/* web/assets/style.css — dùng chung cho mọi trang tĩnh.
   Màu lấy đúng từ apps/mobile/lib/design-tokens.ts để web và app không lệch nhau. */

:root {
  --primary: #2976c7;
  --primary-dark: #1a5da8;
  --bg: #f4faff;
  --surface: #ffffff;
  --border: #e2e8f0;
  --text: #0f1d24;
  --text-muted: #64748b;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f172a;
    --surface: #1e293b;
    --border: #334155;
    --text: #f1f5f9;
    --text-muted: #94a3b8;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  line-height: 1.6;
}

.card {
  width: 100%;
  max-width: 420px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 32px 24px;
  text-align: center;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
}

h1 { font-size: 22px; margin: 0 0 8px; }
p  { margin: 0 0 16px; color: var(--text-muted); font-size: 15px; }

.btn {
  display: block;
  padding: 14px 20px;
  border-radius: 14px;
  background: var(--primary);
  color: #fff;
  text-decoration: none;
  font-weight: 600;
  margin-bottom: 12px;
}
.btn:active { background: var(--primary-dark); }

.btn-secondary {
  background: transparent;
  color: var(--primary);
  border: 1.5px solid var(--primary);
}

.code {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--primary);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px;
  margin-bottom: 16px;
  word-break: break-all;
}

.hint { font-size: 13px; margin-bottom: 0; }
a.link { color: var(--primary); }

/* ── Trang tài liệu (chính sách, điều khoản) ────────────────────────────── */

body.doc {
  display: block;
  padding: 0;
}

.doc-wrap {
  max-width: 760px;
  margin: 0 auto;
  padding: 32px 20px 64px;
}

.doc-wrap h1 { font-size: 28px; margin: 0 0 4px; }
.doc-wrap h2 {
  font-size: 19px;
  margin: 32px 0 8px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}
.doc-wrap h3 { font-size: 16px; margin: 20px 0 6px; }
.doc-wrap p, .doc-wrap li { color: var(--text); font-size: 15px; }
.doc-wrap ul { padding-left: 20px; }
.doc-wrap li { margin-bottom: 6px; }

.updated { color: var(--text-muted); font-size: 14px; margin-bottom: 8px; }

.callout {
  background: var(--bg);
  border: 1px solid var(--border);
  border-left: 4px solid var(--primary);
  border-radius: 10px;
  padding: 14px 16px;
  margin: 16px 0;
}
.callout.warn { border-left-color: #f59e0b; }
.callout p:last-child { margin-bottom: 0; }

table { width: 100%; border-collapse: collapse; margin: 12px 0; font-size: 14px; }
th, td { text-align: left; padding: 8px 10px; border: 1px solid var(--border); vertical-align: top; }
th { background: var(--bg); font-weight: 600; }

.nav { margin-bottom: 24px; font-size: 14px; }
.nav a { color: var(--primary); margin-right: 14px; }

footer { margin-top: 40px; padding-top: 16px; border-top: 1px solid var(--border); color: var(--text-muted); font-size: 13px; }