/* Trang công khai của Smart Remote Device (Cloudflare Pages). Một cột đọc,
   tối ưu cho điện thoại vì chủ yếu được mở trong WebView của app. */
:root {
  --bg: #f5f7fa;
  --surface: #ffffff;
  --fg: #152131;
  --muted: #586577;
  --line: #d4dbe4;
  --accent: #1f5fd1;
  --accent-soft: #e7eefc;
  --font: "Be Vietnam Pro", "Segoe UI", system-ui, -apple-system, sans-serif;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0f141b; --surface: #161d27; --fg: #e4e9f0; --muted: #9aa6b5;
    --line: #2f3b4a; --accent: #7aa7ff; --accent-soft: #1c2a44;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #0f141b; --surface: #161d27; --fg: #e4e9f0; --muted: #9aa6b5;
  --line: #2f3b4a; --accent: #7aa7ff; --accent-soft: #1c2a44;
  color-scheme: dark;
}
* { box-sizing: border-box; }
html { padding-top: env(safe-area-inset-top, 0px); padding-bottom: env(safe-area-inset-bottom, 0px); }
body { margin: 0; background: var(--bg); color: var(--fg); font-family: var(--font); font-size: 16px; line-height: 1.65; }
.page {
  max-width: 720px; margin: 0 auto;
  padding-left: max(16px, env(safe-area-inset-left, 0px));
  padding-right: max(16px, env(safe-area-inset-right, 0px));
  padding-block: 32px 64px;
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; color: var(--fg); text-decoration: none; margin-bottom: 24px; }
.brand-mark { width: 32px; height: 32px; border-radius: 9px; background: var(--accent); display: grid; place-items: center; color: #fff; font-size: 16px; }
h1 { font-size: clamp(26px, 6vw, 34px); line-height: 1.2; margin: 0 0 8px; text-wrap: balance; }
h2 { font-size: 21px; margin: 36px 0 10px; text-wrap: balance; }
h3 { font-size: 17px; margin: 22px 0 6px; }
p, ul, ol { margin: 0 0 12px; }
li { margin-bottom: 6px; }
.lede { color: var(--muted); font-size: 17px; }
.updated { color: var(--muted); font-size: 14px; }
a { color: var(--accent); }
a:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 2px; }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 16px; margin: 16px 0; }
.cards { display: grid; gap: 12px; margin: 24px 0; }
.cards a { display: block; text-decoration: none; color: var(--fg); background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 16px; }
.cards a strong { display: block; color: var(--accent); margin-bottom: 2px; }
.cards a span { color: var(--muted); font-size: 15px; }
.note { background: var(--accent-soft); border-radius: 10px; padding: 12px 14px; margin: 16px 0; font-size: 15px; }
.lang { font-size: 14px; color: var(--muted); margin-bottom: 20px; }
.table-wrap { overflow-x: auto; margin: 0 0 12px; }
table { width: 100%; border-collapse: collapse; font-size: 15px; }
th, td { text-align: left; vertical-align: top; padding: 8px 10px 8px 0; border-bottom: 1px solid var(--line); }
th { font-size: 13px; color: var(--muted); font-weight: 600; }
kbd { font-family: inherit; font-size: 14px; background: var(--surface); border: 1px solid var(--line); border-bottom-width: 2px; border-radius: 6px; padding: 1px 6px; }
hr { border: 0; border-top: 1px solid var(--line); margin: 40px 0; }
footer { margin-top: 48px; color: var(--muted); font-size: 14px; }