/* Lidub — hệ giao diện trang tĩnh (lidub-ui, 2026-10-30).
   Font hệ thống, không CDN/font ngoài, không style inline (CSP style-src 'self').
   Màu: token trên :root, tối theo prefers-color-scheme. Tương phản chữ ≥ 4,5:1 (AA) trên --bg/--surface. */

:root {
  /* Nền & chữ */
  --bg: #f5f6fa;
  --surface: #ffffff;
  --surface-2: #eef0f6;
  --text: #0f172a;
  --muted: #4a5568;
  --line: #d9dee8;
  --line-strong: #b9c1d0;

  /* Thương hiệu: chàm-tím, điểm nhấn hổ phách (chỉ trang trí) */
  --brand: #4a37d8;
  --brand-strong: #3a28b8;
  --brand-ink: #ffffff;
  --brand-soft: #ebe8fd;
  --brand-soft-ink: #3a28b8;
  --accent: #f0a020;

  /* Trạng thái */
  --ok: #0d7044;
  --ok-soft: #e3f5ec;
  --warn: #8a5300;
  --warn-soft: #fff3d6;
  --warn-line: #e9c672;
  --danger: #b4232a;
  --danger-soft: #fde8e8;

  /* Khung trình chiếu mô phỏng (luôn tối) */
  --stage: #0d1020;
  --stage-2: #1a1f38;
  --stage-text: #f1f3fa;

  --font: system-ui, -apple-system, "Segoe UI", Roboto, "Noto Sans", "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  --fs-xs: 0.8125rem;
  --fs-sm: 0.9rem;
  --fs-md: 1rem;
  --fs-lg: 1.15rem;
  --fs-xl: 1.4rem;
  --fs-2xl: clamp(1.6rem, 3.6vw, 2.1rem);
  --fs-hero: clamp(2rem, 6vw, 3.4rem);

  --r-sm: 8px;
  --r: 12px;
  --r-lg: 18px;
  --shadow: 0 1px 2px rgb(15 23 42 / 0.06), 0 4px 16px rgb(15 23 42 / 0.06);
  --shadow-lg: 0 2px 6px rgb(15 23 42 / 0.08), 0 18px 48px rgb(40 30 120 / 0.14);
  --focus: 0 0 0 3px var(--surface), 0 0 0 5px var(--brand);
  --max: 1120px;
  --gutter: 16px;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0a0d16;
    --surface: #121726;
    --surface-2: #1a2034;
    --text: #e8ebf4;
    --muted: #a6afc4;
    --line: #283049;
    --line-strong: #3b4566;

    --brand: #a395ff;
    --brand-strong: #bdb3ff;
    --brand-ink: #140c3d;
    --brand-soft: #241e4d;
    --brand-soft-ink: #cdc5ff;
    --accent: #f6b444;

    --ok: #56d993;
    --ok-soft: #0f2a1f;
    --warn: #f3c46a;
    --warn-soft: #2b220f;
    --warn-line: #6b5420;
    --danger: #ff8a8f;
    --danger-soft: #3a1518;

    --stage: #05070e;
    --stage-2: #141a30;

    --shadow: 0 1px 2px rgb(0 0 0 / 0.4), 0 4px 16px rgb(0 0 0 / 0.25);
    --shadow-lg: 0 2px 6px rgb(0 0 0 / 0.4), 0 18px 48px rgb(0 0 0 / 0.45);
    color-scheme: dark;
  }
}

/* ---------- Nền tảng ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } *, *::before, *::after { animation: none !important; transition: none !important; } }
body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--bg);
  color: var(--text);
  font: var(--fs-md)/1.6 var(--font);
  overflow-wrap: break-word;
}
main { flex: 1 0 auto; padding: 40px 0 64px; }
img, svg { max-width: 100%; }
a { color: var(--brand); text-underline-offset: 0.18em; }
a:hover { color: var(--brand-strong); text-decoration-thickness: 2px; }
:focus-visible { outline: none; box-shadow: var(--focus); border-radius: 6px; }
code, kbd, pre, samp { font-family: var(--mono); font-size: 0.88em; }
code, kbd { background: var(--surface-2); border: 1px solid var(--line); padding: 0.05em 0.4em; border-radius: 5px; }
h1, h2, h3 { line-height: 1.2; letter-spacing: -0.015em; margin: 0 0 12px; }
h1 { font-size: var(--fs-2xl); }
h2 { font-size: var(--fs-xl); }
h3 { font-size: var(--fs-lg); }
p { margin: 0 0 12px; }
[hidden] { display: none !important; }

.wrap { width: 100%; max-width: var(--max); margin: 0 auto; padding: 0 var(--gutter); }
.narrow { max-width: 560px; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }
.skip { position: absolute; left: 12px; top: -48px; z-index: 50; background: var(--brand); color: var(--brand-ink); padding: 8px 14px; border-radius: var(--r-sm); font-weight: 600; text-decoration: none; }
.skip:focus { top: 12px; color: var(--brand-ink); }
.muted { color: var(--muted); }
.small { font-size: var(--fs-sm); }
.lead { font-size: var(--fs-lg); color: var(--muted); max-width: 640px; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; font-size: var(--fs-xs); font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; color: var(--brand); margin: 0 0 10px; }
.num { font-variant-numeric: tabular-nums; }

.ico { width: 20px; height: 20px; flex: none; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; vertical-align: -0.2em; }
.ico.lg { width: 24px; height: 24px; }
.ico-sprite { position: absolute; width: 0; height: 0; overflow: hidden; }

/* ---------- Thông báo đầu trang ---------- */
.notice { background: var(--warn-soft); color: var(--text); border-bottom: 1px solid var(--warn-line); font-size: var(--fs-sm); }
.notice .wrap { display: flex; gap: 10px; align-items: flex-start; padding-top: 9px; padding-bottom: 9px; }
.notice .ico { color: var(--warn); margin-top: 2px; }

/* ---------- Đầu trang ---------- */
header.site {
  position: sticky; top: 0; z-index: 20;
  background: color-mix(in srgb, var(--surface) 88%, transparent);
  -webkit-backdrop-filter: saturate(1.4) blur(10px);
  backdrop-filter: saturate(1.4) blur(10px);
  border-bottom: 1px solid var(--line);
}
header.site .wrap { display: flex; align-items: center; gap: 12px 24px; min-height: 64px; flex-wrap: wrap; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 800; font-size: 1.2rem; letter-spacing: -0.02em; color: var(--text); text-decoration: none; }
.brand:hover { color: var(--text); }
.brand .logo { width: 32px; height: 32px; }
.brand .tagline { font-weight: 600; font-size: var(--fs-xs); color: var(--muted); letter-spacing: 0; padding: 2px 8px; border: 1px solid var(--line); border-radius: 999px; }
nav.main { display: flex; gap: 4px; flex: 1 1 auto; }
nav.main a { color: var(--muted); text-decoration: none; font-weight: 600; font-size: var(--fs-sm); padding: 8px 12px; border-radius: var(--r-sm); white-space: nowrap; }
nav.main a:hover { color: var(--text); background: var(--surface-2); }
nav.main a[aria-current="page"] { color: var(--brand-soft-ink); background: var(--brand-soft); }

.auth { display: flex; align-items: center; gap: 6px 12px; flex-wrap: wrap; font-size: var(--fs-sm); margin-left: auto; }
.auth a { color: var(--muted); text-decoration: none; font-weight: 600; padding: 6px 4px; }
.auth a:hover { color: var(--text); }
.auth a.who { color: var(--text); display: inline-flex; align-items: center; gap: 8px; max-width: 220px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.auth a.who::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--ok); flex: none; }
.auth a.btn { color: var(--brand-ink); padding: 8px 14px; }
.auth a.btn:hover { color: var(--brand-ink); }

@media (max-width: 720px) {
  header.site { position: static; }
  header.site .wrap { padding-top: 10px; padding-bottom: 6px; }
  nav.main { order: 3; flex-basis: 100%; overflow-x: auto; margin: 0 calc(var(--gutter) * -1); padding: 0 var(--gutter) 4px; scrollbar-width: none; }
  nav.main::-webkit-scrollbar { display: none; }
  .brand .tagline { display: none; }
}

/* ---------- Nút ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 44px; padding: 10px 20px;
  border-radius: 999px; border: 1px solid transparent;
  background: var(--brand); color: var(--brand-ink);
  font: inherit; font-weight: 700; font-size: var(--fs-md); line-height: 1.2;
  text-decoration: none; cursor: pointer;
  transition: background-color 0.15s, box-shadow 0.15s, transform 0.05s;
}
.btn:hover { background: var(--brand-strong); color: var(--brand-ink); text-decoration: none; }
.btn:active { transform: translateY(1px); }
.btn.ghost { background: var(--surface); color: var(--text); border-color: var(--line-strong); }
.btn.ghost:hover { background: var(--surface-2); color: var(--text); }
.btn.danger { background: var(--surface); color: var(--danger); border-color: color-mix(in srgb, var(--danger) 45%, var(--line)); }
.btn.danger:hover { background: var(--danger-soft); color: var(--danger); }
.btn.small { min-height: 36px; padding: 6px 14px; font-size: var(--fs-sm); }
.btn.lg { min-height: 52px; padding: 14px 26px; font-size: var(--fs-lg); }
.btn:disabled, .btn[aria-disabled="true"] { background: var(--surface-2); color: var(--muted); border-color: var(--line); cursor: not-allowed; pointer-events: none; }
.btn .ico { width: 18px; height: 18px; }
.linkish { background: none; border: 0; padding: 6px 4px; color: var(--muted); font: inherit; font-weight: 600; cursor: pointer; border-radius: 6px; }
.linkish:hover { color: var(--text); }
.actions { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; margin: 18px 0 0; }

/* ---------- Thẻ, lưới ---------- */
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-lg); padding: 22px; box-shadow: var(--shadow); min-width: 0; }
.card > :last-child { margin-bottom: 0; }
.card-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; margin: 0 0 16px; }
.card-head h2, .card-head h3 { margin: 0; display: flex; align-items: center; gap: 10px; }
.grid { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(min(100%, 250px), 1fr)); }
.grid.two { grid-template-columns: repeat(auto-fit, minmax(min(100%, 380px), 1fr)); }
.tile-ico { width: 44px; height: 44px; border-radius: 12px; display: grid; place-items: center; background: var(--brand-soft); color: var(--brand-soft-ink); margin: 0 0 14px; }
.tile-ico .ico { width: 22px; height: 22px; }

.section { padding: 56px 0 0; }
.section-head { max-width: 680px; margin: 0 0 24px; }
.section-head h2 { font-size: var(--fs-2xl); }

/* ---------- Trang chủ: hero ---------- */
.hero { display: grid; gap: 40px; align-items: center; grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr); padding-top: 8px; }
.hero h1 { font-size: var(--fs-hero); letter-spacing: -0.03em; line-height: 1.08; margin-bottom: 18px; }
.hero h1 .hl { color: var(--brand); }
.hero .facts { display: flex; flex-wrap: wrap; gap: 8px 18px; list-style: none; padding: 0; margin: 22px 0 0; color: var(--muted); font-size: var(--fs-sm); }
.hero .facts li { display: inline-flex; align-items: center; gap: 6px; }
.hero .facts .ico { color: var(--ok); width: 18px; height: 18px; }
@media (max-width: 880px) { .hero { grid-template-columns: 1fr; gap: 28px; } }

/* Khung video mô phỏng (trang trí, aria-hidden) */
.stage { position: relative; border-radius: var(--r-lg); background: linear-gradient(160deg, var(--stage-2), var(--stage)); color: var(--stage-text); box-shadow: var(--shadow-lg); overflow: hidden; aspect-ratio: 16 / 10; display: flex; flex-direction: column; }
.stage-bar { display: flex; align-items: center; gap: 6px; padding: 10px 14px; background: rgb(255 255 255 / 0.05); border-bottom: 1px solid rgb(255 255 255 / 0.08); font-size: var(--fs-xs); color: rgb(241 243 250 / 0.7); }
.stage-bar i { width: 10px; height: 10px; border-radius: 50%; background: rgb(255 255 255 / 0.18); }
.stage-bar span { margin-left: 8px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.stage-body { position: relative; flex: 1; display: grid; place-items: center; }
.stage-glow { position: absolute; inset: 0; background: radial-gradient(60% 70% at 30% 30%, rgb(122 104 255 / 0.35), transparent 70%), radial-gradient(50% 60% at 80% 70%, rgb(240 160 32 / 0.18), transparent 70%); }
.stage-play { position: relative; width: 64px; height: 64px; border-radius: 50%; background: rgb(255 255 255 / 0.14); display: grid; place-items: center; border: 1px solid rgb(255 255 255 / 0.25); }
.stage-play svg { width: 26px; height: 26px; fill: #fff; margin-left: 4px; }
.stage-subs { position: absolute; left: 50%; bottom: 14%; transform: translateX(-50%); width: min(88%, 440px); display: grid; gap: 6px; text-align: center; }
.stage-subs .src { font-size: var(--fs-xs); color: rgb(241 243 250 / 0.55); text-decoration: line-through; text-decoration-color: rgb(241 243 250 / 0.35); }
.stage-subs .vi { font-size: clamp(0.85rem, 2.4vw, 1.05rem); font-weight: 700; background: rgb(0 0 0 / 0.55); padding: 6px 12px; border-radius: 8px; justify-self: center; }
.stage-dub { position: absolute; right: 14px; top: 14px; display: inline-flex; align-items: center; gap: 8px; font-size: var(--fs-xs); font-weight: 700; background: #f0a020; color: #1d1300; padding: 5px 10px; border-radius: 999px; }
.stage-dub svg { width: 14px; height: 14px; fill: none; stroke: currentColor; stroke-width: 2.2; stroke-linecap: round; }
.stage-wave { display: flex; align-items: flex-end; gap: 3px; height: 34px; padding: 0 16px 12px; }
.stage-wave b { flex: 1; border-radius: 2px; background: linear-gradient(to top, #7a68ff, #c3b9ff); opacity: 0.85; }
.stage-wave b:nth-child(5n+1) { height: 30%; } .stage-wave b:nth-child(5n+2) { height: 75%; } .stage-wave b:nth-child(5n+3) { height: 50%; }
.stage-wave b:nth-child(5n+4) { height: 95%; } .stage-wave b:nth-child(5n) { height: 40%; }
.stage-wave b:nth-child(n+19) { background: rgb(255 255 255 / 0.18); }
.stage-time { height: 4px; margin: 0 16px 14px; background: rgb(255 255 255 / 0.15); border-radius: 2px; }
.stage-time span { display: block; width: 46%; height: 100%; background: #7a68ff; border-radius: 2px; }

/* Các bước */
.steps { list-style: none; padding: 0; margin: 0; display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(min(100%, 250px), 1fr)); counter-reset: s; }
.steps > li { counter-increment: s; position: relative; background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-lg); padding: 22px; box-shadow: var(--shadow); }
.steps > li::before { content: counter(s, decimal-leading-zero); position: absolute; right: 20px; top: 16px; font-size: 1.6rem; font-weight: 800; color: var(--line-strong); font-variant-numeric: tabular-nums; }
.steps h3 { margin-bottom: 6px; }
.steps p { color: var(--muted); margin: 0; }

/* Danh sách cài đặt (gọn, có số) */
.howto { list-style: none; padding: 0; margin: 0; display: grid; gap: 0; counter-reset: h; }
.howto > li { counter-increment: h; position: relative; padding: 0 0 20px 48px; }
.howto > li::before { content: counter(h); position: absolute; left: 0; top: 0; width: 32px; height: 32px; border-radius: 50%; background: var(--brand); color: var(--brand-ink); display: grid; place-items: center; font-weight: 800; font-size: var(--fs-sm); }
.howto > li::after { content: ""; position: absolute; left: 15px; top: 36px; bottom: 4px; width: 2px; background: var(--line); }
.howto > li:last-child { padding-bottom: 0; }
.howto > li:last-child::after { display: none; }

/* Dải kêu gọi */
.cta { display: flex; align-items: center; justify-content: space-between; gap: 20px; flex-wrap: wrap; padding: 28px; border-radius: var(--r-lg); background: linear-gradient(120deg, var(--brand), var(--brand-strong)); color: var(--brand-ink); }
.cta h2 { margin: 0 0 6px; }
.cta p { margin: 0; opacity: 0.92; }
.cta .btn { background: var(--surface); color: var(--text); }
.cta .btn:hover { background: var(--surface-2); color: var(--text); }

/* Hỏi đáp */
.faq { display: grid; gap: 10px; }
.faq details { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r); padding: 0 18px; }
.faq summary { cursor: pointer; font-weight: 700; padding: 14px 0; list-style: none; display: flex; justify-content: space-between; gap: 12px; align-items: center; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font-size: 1.3rem; line-height: 1; color: var(--muted); }
.faq details[open] summary::after { content: "−"; }
.faq details > p { color: var(--muted); padding: 0 0 14px; margin: 0; }

/* ---------- Tải tiện ích ---------- */
.release { display: flex; flex-direction: column; gap: 10px; }
.release.featured { border-color: var(--brand); box-shadow: 0 0 0 1px var(--brand), var(--shadow); }
.release header { display: flex; align-items: center; justify-content: space-between; gap: 10px; flex-wrap: wrap; }
.release h3 { font-size: 1.5rem; margin: 0; font-variant-numeric: tabular-nums; }
.release p { margin: 0; }
.release .grow { flex: 1; }
.release .btn { width: 100%; }
.tag { display: inline-flex; align-items: center; gap: 6px; font-size: var(--fs-xs); font-weight: 700; padding: 3px 10px; border-radius: 999px; background: var(--brand-soft); color: var(--brand-soft-ink); white-space: nowrap; }
.tag.stable { background: var(--ok-soft); color: var(--ok); }
.tag.lab { background: var(--warn-soft); color: var(--warn); }
.meta { font-size: var(--fs-sm); color: var(--muted); }
.sha { font-family: var(--mono); font-size: var(--fs-xs); word-break: break-all; color: var(--muted); background: var(--surface-2); border-radius: var(--r-sm); padding: 8px 10px; }
.status { font-size: var(--fs-sm); color: var(--muted); display: flex; gap: 8px; align-items: center; }
.status::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--warn); flex: none; }
.status.ok { color: var(--ok); }
.status.ok::before { background: var(--ok); }

/* ---------- Chân trang ---------- */
footer.site { border-top: 1px solid var(--line); background: var(--surface); color: var(--muted); font-size: var(--fs-sm); }
footer.site .wrap { padding-top: 28px; padding-bottom: 32px; display: flex; gap: 20px 32px; justify-content: space-between; flex-wrap: wrap; align-items: flex-start; }
footer.site .brand { font-size: 1rem; }
footer.site .brand .logo { width: 24px; height: 24px; }
footer.site nav { display: flex; gap: 8px 20px; flex-wrap: wrap; }
footer.site a { color: var(--muted); text-decoration: none; font-weight: 600; }
footer.site a:hover { color: var(--text); text-decoration: underline; }
footer.site .copy { flex-basis: 100%; margin: 0; }

/* ---------- Thông điệp, trạng thái ---------- */
.msg { display: flex; gap: 10px; align-items: flex-start; padding: 12px 14px; border-radius: var(--r); border: 1px solid var(--line); background: var(--surface); margin: 0 0 12px; }
.msg > .ico { margin-top: 2px; }
.msg p { margin: 0 0 6px; }
.msg p:last-child { margin: 0; }
.msg.err { border-color: color-mix(in srgb, var(--danger) 45%, var(--line)); background: var(--danger-soft); }
.msg.err > .ico { color: var(--danger); }
.msg.ok { border-color: color-mix(in srgb, var(--ok) 45%, var(--line)); background: var(--ok-soft); }
.msg.ok > .ico { color: var(--ok); }
.msg.warn { border-color: var(--warn-line); background: var(--warn-soft); }
.msg.warn > .ico { color: var(--warn); }

.state-box { display: grid; justify-items: center; text-align: center; gap: 10px; padding: 48px 20px; border: 1px dashed var(--line-strong); border-radius: var(--r-lg); background: var(--surface); }
.state-box .tile-ico { margin: 0; }
.state-box h2 { margin: 0; font-size: var(--fs-lg); }
.state-box p { margin: 0; color: var(--muted); max-width: 440px; }
.state-box.err .tile-ico { background: var(--danger-soft); color: var(--danger); }

.spinner { width: 22px; height: 22px; border-radius: 50%; border: 3px solid var(--line); border-top-color: var(--brand); animation: spin 0.8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.skeleton { display: grid; gap: 16px; }
.skeleton .row { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(min(100%, 200px), 1fr)); }
.skeleton i { display: block; height: 104px; border-radius: var(--r-lg); background: linear-gradient(90deg, var(--surface-2), var(--surface), var(--surface-2)); background-size: 200% 100%; animation: shimmer 1.4s ease-in-out infinite; border: 1px solid var(--line); }
.skeleton i.tall { height: 260px; }
@keyframes shimmer { from { background-position: 200% 0; } to { background-position: -200% 0; } }

.pill { display: inline-flex; align-items: center; gap: 6px; font-size: var(--fs-xs); font-weight: 700; padding: 4px 10px; border-radius: 999px; background: var(--surface-2); color: var(--muted); border: 1px solid var(--line); white-space: nowrap; }
.pill::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: currentColor; }
.pill.on { background: var(--ok-soft); color: var(--ok); border-color: color-mix(in srgb, var(--ok) 35%, var(--line)); }
.pill.off { background: var(--danger-soft); color: var(--danger); border-color: color-mix(in srgb, var(--danger) 35%, var(--line)); }
.pill.warn { background: var(--warn-soft); color: var(--warn); border-color: var(--warn-line); }

/* ---------- Biểu mẫu ---------- */
form.stack { display: grid; gap: 18px; }
.field { display: grid; gap: 6px; }
.field label, .field .label { font-weight: 700; font-size: var(--fs-sm); }
.field .hint { font-size: var(--fs-sm); color: var(--muted); }
.input-affix { display: flex; align-items: stretch; }
.input-affix input { border-top-right-radius: 0; border-bottom-right-radius: 0; }
.input-affix span { display: grid; place-items: center; padding: 0 12px; border: 1px solid var(--line-strong); border-left: 0; border-radius: 0 var(--r-sm) var(--r-sm) 0; background: var(--surface-2); color: var(--muted); font-weight: 700; font-size: var(--fs-sm); }
input[type="text"], input[type="password"], input[type="number"], select {
  font: inherit; color: var(--text); background: var(--surface);
  border: 1px solid var(--line-strong); border-radius: var(--r-sm);
  padding: 10px 12px; min-height: 44px; width: 100%; min-width: 0;
}
input:focus-visible, select:focus-visible { border-color: var(--brand); box-shadow: 0 0 0 3px color-mix(in srgb, var(--brand) 30%, transparent); border-radius: var(--r-sm); }
input:disabled, select:disabled { background: var(--surface-2); color: var(--muted); cursor: not-allowed; }
input[aria-invalid="true"] { border-color: var(--danger); }
.mono { font-family: var(--mono); }

/* Công tắc (checkbox role=switch) */
.switch-row { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 14px 16px; border: 1px solid var(--line); border-radius: var(--r); background: var(--surface-2); }
.switch-row .txt { display: grid; gap: 2px; }
.switch-row label { font-weight: 700; cursor: pointer; }
.switch-row .hint { font-size: var(--fs-sm); color: var(--muted); }
input.switch { appearance: none; -webkit-appearance: none; flex: none; width: 52px; height: 30px; border-radius: 999px; background: var(--line-strong); position: relative; cursor: pointer; margin: 0; transition: background-color 0.15s; }
input.switch::after { content: ""; position: absolute; top: 3px; left: 3px; width: 24px; height: 24px; border-radius: 50%; background: #fff; box-shadow: 0 1px 3px rgb(0 0 0 / 0.3); transition: transform 0.15s; }
input.switch:checked { background: var(--ok); }
input.switch:checked::after { transform: translateX(22px); }
input.switch:focus-visible { box-shadow: var(--focus); }

/* Khung xác nhận */
.confirm { border: 1px solid var(--warn-line); background: var(--warn-soft); border-radius: var(--r); padding: 16px; display: grid; gap: 10px; }
.confirm:focus { outline: none; box-shadow: var(--focus); }
.confirm .confirm-title { display: flex; gap: 8px; align-items: center; font-weight: 800; margin: 0; }
.confirm .confirm-title .ico { color: var(--warn); }
.confirm ul { margin: 0; padding-left: 22px; display: grid; gap: 4px; }
.confirm p { margin: 0; }
.confirm .actions { margin: 4px 0 0; }

dl.kv { display: grid; grid-template-columns: max-content minmax(0, 1fr); gap: 10px 20px; margin: 0; }
dl.kv dt { color: var(--muted); font-size: var(--fs-sm); }
dl.kv dd { margin: 0; font-weight: 600; font-variant-numeric: tabular-nums; word-break: break-word; }

/* ---------- Đăng nhập / tài khoản / kết nối ---------- */
.auth-card { max-width: 480px; margin: 12px auto 0; text-align: center; padding: 36px 28px; }
.auth-card .tile-ico { margin: 0 auto 16px; width: 56px; height: 56px; border-radius: 16px; }
.auth-card .tile-ico .ico { width: 28px; height: 28px; }
.auth-card .actions { justify-content: center; }
.auth-card .msg { text-align: left; }
.auth-card .fine { font-size: var(--fs-sm); color: var(--muted); margin: 18px 0 0; }

.page-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 16px; flex-wrap: wrap; margin: 0 0 24px; }
.page-head h1 { margin: 0 0 4px; }
.page-head p { margin: 0; color: var(--muted); }

.profile { display: flex; align-items: center; gap: 16px; margin: 0 0 18px; }
.avatar { width: 56px; height: 56px; border-radius: 50%; background: var(--brand-soft); color: var(--brand-soft-ink); display: grid; place-items: center; font-weight: 800; font-size: 1.4rem; flex: none; text-transform: uppercase; }
.profile .who-name { font-weight: 800; font-size: var(--fs-lg); margin: 0; }
.profile .who-mail { color: var(--muted); margin: 0; word-break: break-all; }

.meter { height: 10px; border-radius: 999px; background: var(--surface-2); border: 1px solid var(--line); overflow: hidden; display: flex; }
.meter > span { display: block; height: 100%; width: 0; background: var(--brand); transition: width 0.4s; }
.meter > span.reserved { background: var(--accent); }
.meter.hot > span:first-child { background: var(--danger); }
.legend { display: flex; flex-wrap: wrap; gap: 6px 16px; font-size: var(--fs-xs); color: var(--muted); margin: 8px 0 0; padding: 0; list-style: none; }
.legend li { display: inline-flex; align-items: center; gap: 6px; }
.legend i { width: 10px; height: 10px; border-radius: 3px; background: var(--surface-2); border: 1px solid var(--line-strong); }
.legend i.spent { background: var(--brand); border-color: var(--brand); }
.legend i.reserved { background: var(--accent); border-color: var(--accent); }

.links { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; }
.links a { display: flex; align-items: center; gap: 12px; padding: 12px 14px; border: 1px solid var(--line); border-radius: var(--r); color: var(--text); text-decoration: none; font-weight: 600; background: var(--surface); }
.links a:hover { border-color: var(--brand); color: var(--text); background: var(--surface-2); }
.links a .ico { color: var(--brand); }
.links a .go { margin-left: auto; color: var(--muted); }

.connect-steps { list-style: none; padding: 0; margin: 20px 0 0; display: grid; gap: 10px; text-align: left; }
.connect-steps li { display: flex; gap: 12px; align-items: flex-start; padding: 12px 14px; border-radius: var(--r); background: var(--surface-2); }
.connect-steps li .ico { color: var(--ok); margin-top: 2px; }
.connect-steps li.now .ico { color: var(--brand); }

/* ---------- Bảng điều khiển quản trị ---------- */
.console { display: grid; grid-template-columns: 220px minmax(0, 1fr); gap: 28px; align-items: start; }
.console-nav { position: sticky; top: 84px; display: grid; gap: 2px; }
.console-nav p { font-size: var(--fs-xs); font-weight: 800; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); margin: 0 0 8px 12px; }
.console-nav a { display: flex; align-items: center; gap: 10px; padding: 9px 12px; border-radius: var(--r-sm); color: var(--muted); text-decoration: none; font-weight: 600; font-size: var(--fs-sm); }
.console-nav a:hover { background: var(--surface-2); color: var(--text); }
.console-nav a .ico { width: 18px; height: 18px; }
.console-main { display: grid; gap: 24px; min-width: 0; }
.console-main > section { scroll-margin-top: 84px; }
@media (max-width: 900px) {
  .console { grid-template-columns: 1fr; gap: 16px; }
  .console-nav { position: static; display: flex; overflow-x: auto; gap: 4px; margin: 0 calc(var(--gutter) * -1); padding: 0 var(--gutter) 4px; scrollbar-width: none; }
  .console-nav::-webkit-scrollbar { display: none; }
  .console-nav p { display: none; }
  .console-nav a { white-space: nowrap; border: 1px solid var(--line); background: var(--surface); }
}

.toolbar { display: flex; align-items: center; gap: 10px 14px; flex-wrap: wrap; }
.toolbar .stamp { font-size: var(--fs-sm); color: var(--muted); }

.status-strip { display: flex; flex-wrap: wrap; gap: 8px; }

.kpis { display: grid; gap: 14px; grid-template-columns: repeat(4, minmax(0, 1fr)); }
@media (max-width: 1000px) { .kpis { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 420px) { .kpis { gap: 10px; } }
.kpi { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-lg); padding: 16px 18px; box-shadow: var(--shadow); display: grid; gap: 6px; min-width: 0; }
.kpi .k-label { display: flex; align-items: center; gap: 8px; font-size: var(--fs-sm); font-weight: 700; color: var(--muted); margin: 0; }
.kpi .k-label .ico { width: 18px; height: 18px; color: var(--brand); }
.kpi .k-value { font-size: clamp(1.15rem, 3.2vw, 1.65rem); font-weight: 800; letter-spacing: -0.02em; font-variant-numeric: tabular-nums; margin: 0; line-height: 1.2; overflow-wrap: anywhere; }
.kpi .k-sub { font-size: var(--fs-xs); color: var(--muted); margin: 0; }
.kpi.hot { border-color: color-mix(in srgb, var(--danger) 50%, var(--line)); }
.kpi.hot .k-value { color: var(--danger); }

.usage { display: grid; gap: 4px; }
.usage-top { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; font-size: var(--fs-sm); }
.usage-top strong { font-variant-numeric: tabular-nums; }

.dirty { font-size: var(--fs-xs); font-weight: 700; color: var(--warn); background: var(--warn-soft); border: 1px solid var(--warn-line); padding: 3px 10px; border-radius: 999px; }

.key-now { display: flex; align-items: center; gap: 14px; padding: 14px 16px; border-radius: var(--r); background: var(--surface-2); border: 1px solid var(--line); margin: 0 0 16px; }
.key-now .tile-ico { margin: 0; width: 40px; height: 40px; }
.key-now .txt { display: grid; gap: 2px; min-width: 0; }
.key-now .txt span { font-size: var(--fs-xs); color: var(--muted); font-weight: 700; text-transform: uppercase; letter-spacing: 0.06em; }
.key-now strong { font-family: var(--mono); font-size: var(--fs-sm); overflow-wrap: anywhere; }

.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--r); }
table.log { width: 100%; border-collapse: collapse; font-size: var(--fs-sm); }
table.log th, table.log td { text-align: left; padding: 10px 14px; border-bottom: 1px solid var(--line); vertical-align: top; }
table.log th { font-size: var(--fs-xs); text-transform: uppercase; letter-spacing: 0.06em; color: var(--muted); background: var(--surface-2); font-weight: 800; }
table.log tr:last-child td { border-bottom: 0; }
table.log td.when { white-space: nowrap; font-variant-numeric: tabular-nums; color: var(--muted); }
.chips { display: flex; flex-wrap: wrap; gap: 4px; }
.chip { font-size: var(--fs-xs); font-weight: 700; padding: 2px 8px; border-radius: 6px; background: var(--brand-soft); color: var(--brand-soft-ink); }
@media (max-width: 560px) {
  table.log thead { display: none; }
  table.log, table.log tbody, table.log tr, table.log td { display: block; width: 100%; }
  table.log tr { padding: 10px 14px; border-bottom: 1px solid var(--line); }
  table.log td { border: 0; padding: 2px 0; }
}

/* ---------- Tiện ích khoảng cách ---------- */
.section-gap { margin-top: 16px; }
.section-gap-sm:not(:empty) { margin-top: 12px; }
.spinner.center { margin: 8px auto; }
.fine .ico { width: 16px; height: 16px; color: var(--ok); }
.state-box[data-state="loading"] { border-style: solid; }

/* ---------- Tinh chỉnh ---------- */
.stage-body { place-items: start center; padding-top: 12%; }
.status-strip { margin: 0 0 14px; }
.kpi .k-value .unit { font-size: 0.55em; font-weight: 700; color: var(--muted); margin-left: 4px; letter-spacing: 0; }
@media (max-width: 480px) {
  .stage { aspect-ratio: 4 / 3.4; }
  .stage-body { padding-top: 16%; }
  .stage-play { width: 52px; height: 52px; }
  .stage-dub { right: 10px; top: 10px; }
  .stage-subs .src { display: none; }
}