:root {
  --bg: #f6f5f2;
  --panel: #ffffff;
  --panel-2: #f0eee9;
  --ink: #1c1a17;
  --muted: #65605a;
  --line: #e2ded6;
  --accent: #c2360b;          /* nút: chữ trắng trên nền này ≥ 4,5:1 */
  --accent-ink: #ffffff;
  --accent-soft: #fde9e1;
  --ok: #1d7a45;
  --ok-soft: #e1f3e8;
  --warn: #8a5a00;
  --warn-soft: #fcf0d4;
  --bad: #b3261e;
  --bad-soft: #fbe3e1;
  --focus: #1f6feb;
  --radius: 12px;
  --shadow: 0 1px 2px rgb(0 0 0 / .06), 0 4px 16px rgb(0 0 0 / .04);
  --font: 'Be Vietnam Pro', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --mono: ui-monospace, 'Cascadia Mono', Consolas, monospace;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #121110; --panel: #1b1a18; --panel-2: #24221f; --ink: #f2efe9; --muted: #a8a197; --line: #34312c;
    --accent: #ff7a45; --accent-ink: #1c0d05; --accent-soft: #3a1d10;
    --ok: #5fd08f; --ok-soft: #12301f; --warn: #f2c25b; --warn-soft: #33270d; --bad: #ff8a80; --bad-soft: #3a1513;
    --shadow: none; color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #121110; --panel: #1b1a18; --panel-2: #24221f; --ink: #f2efe9; --muted: #a8a197; --line: #34312c;
  --accent: #ff7a45; --accent-ink: #1c0d05; --accent-soft: #3a1d10;
  --ok: #5fd08f; --ok-soft: #12301f; --warn: #f2c25b; --warn-soft: #33270d; --bad: #ff8a80; --bad-soft: #3a1513;
  --shadow: none; color-scheme: dark;
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body { background: var(--bg); color: var(--ink); font: 15px/1.55 var(--font); -webkit-font-smoothing: antialiased; }
a { color: var(--accent); }
h1, h2, h3 { line-height: 1.25; margin: 0 0 .5em; }
h1 { font-size: 1.6rem; font-weight: 800; letter-spacing: -.01em; }
h2 { font-size: 1.15rem; font-weight: 700; }
h3 { font-size: 1rem; font-weight: 700; }
p { margin: 0 0 .8em; }
code, .mono { font-family: var(--mono); font-size: .88em; }
.boot { padding: 40px; color: var(--muted); }
:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; }

/* Khung */
.shell { display: grid; grid-template-columns: 232px 1fr; min-height: 100vh; }
.side { background: var(--panel); border-right: 1px solid var(--line); padding: 18px 12px; position: sticky; top: 0; height: 100vh; overflow-y: auto; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 1.05rem; padding: 4px 8px 16px; }
.brand svg { width: 28px; height: 28px; }
.nav { display: flex; flex-direction: column; gap: 2px; }
.nav .grp { font-size: .72rem; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); margin: 14px 8px 4px; }
.nav a { display: flex; gap: 10px; align-items: center; padding: 8px 10px; border-radius: 8px; color: var(--ink); text-decoration: none; font-weight: 500; }
.nav a:hover { background: var(--panel-2); }
.nav a[aria-current="page"] { background: var(--accent-soft); color: var(--accent); font-weight: 700; }
.side .who { margin-top: 18px; padding: 10px; border-top: 1px solid var(--line); font-size: .85rem; color: var(--muted); }
main { padding: 28px clamp(16px, 4vw, 40px) 60px; max-width: 1180px; width: 100%; min-width: 0; }
.lede { color: var(--muted); max-width: 70ch; }

@media (max-width: 860px) {
  .shell { grid-template-columns: 1fr; }
  .side { position: sticky; top: 0; z-index: 5; height: auto; padding: 8px 12px; border-right: 0; border-bottom: 1px solid var(--line); }
  .brand { padding: 4px 4px 8px; }
  .nav { flex-direction: row; overflow-x: auto; gap: 4px; scrollbar-width: none; }
  .nav .grp, .side .who { display: none; }
  .nav a { white-space: nowrap; padding: 6px 10px; }
  main { padding: 18px 16px 60px; }
}

/* Thành phần */
.card { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; box-shadow: var(--shadow); }
.card + .card { margin-top: 16px; }
.grid { display: grid; gap: 14px; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); }
.row { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }
.stack > * + * { margin-top: 12px; }
.split { display: grid; gap: 16px; grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr); align-items: start; }
@media (max-width: 960px) { .split { grid-template-columns: 1fr; } }

label { display: block; font-weight: 600; font-size: .88rem; margin-bottom: 4px; }
.hint { font-size: .82rem; color: var(--muted); font-weight: 400; }
input[type=text], input[type=password], input[type=number], input[type=date], input[type=search], input[type=url], select, textarea {
  width: 100%; font: inherit; color: var(--ink); background: var(--panel); border: 1px solid var(--line); border-radius: 8px; padding: 9px 11px;
}
textarea { min-height: 120px; resize: vertical; }
input[type=color] { width: 44px; height: 36px; border: 1px solid var(--line); border-radius: 8px; background: var(--panel); padding: 2px; }
.btn { display: inline-flex; align-items: center; gap: 8px; font: inherit; font-weight: 600; border-radius: 8px; padding: 9px 16px; border: 1px solid var(--line); background: var(--panel); color: var(--ink); cursor: pointer; text-decoration: none; }
.btn:hover { background: var(--panel-2); }
.btn.primary { background: var(--accent); color: var(--accent-ink); border-color: transparent; }
.btn.primary:hover { filter: brightness(1.06); }
.btn.small { padding: 5px 10px; font-size: .85rem; }
.btn:disabled { opacity: .55; cursor: not-allowed; }
.btn.danger { color: var(--bad); }

.pill { display: inline-block; font-size: .75rem; font-weight: 700; padding: 2px 8px; border-radius: 999px; background: var(--panel-2); color: var(--muted); }
.pill.ok { background: var(--ok-soft); color: var(--ok); }
.pill.warn { background: var(--warn-soft); color: var(--warn); }
.pill.bad { background: var(--bad-soft); color: var(--bad); }
.pill.new { background: var(--accent-soft); color: var(--accent); }

.verdict { border-radius: var(--radius); padding: 14px 16px; font-weight: 600; }
.verdict.ok { background: var(--ok-soft); color: var(--ok); }
.verdict.bad { background: var(--bad-soft); color: var(--bad); }
.verdict.warn { background: var(--warn-soft); color: var(--warn); }
.issues { list-style: none; padding: 0; margin: 10px 0 0; }
.issues li { padding: 10px 12px; border: 1px solid var(--line); border-radius: 10px; margin-top: 8px; background: var(--panel); }
.issues .where { font-weight: 700; margin-right: 6px; }
.issues .src { display: block; font-size: .8rem; color: var(--muted); margin-top: 3px; }
.issues mark { background: var(--warn-soft); color: inherit; padding: 0 2px; border-radius: 3px; }

table { width: 100%; border-collapse: collapse; font-size: .92rem; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font-size: .78rem; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); font-weight: 700; }
.tbl-wrap { overflow-x: auto; }

.tool { display: block; text-decoration: none; color: inherit; }
.tool:hover { border-color: var(--accent); }
.tool h3 { margin: 6px 0 4px; }
.tool p { margin: 0; color: var(--muted); font-size: .9rem; }
.kicker { font-size: .74rem; font-weight: 700; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); }
.stat { font-size: 1.8rem; font-weight: 800; }
.empty { color: var(--muted); padding: 18px; text-align: center; }
.toast { position: fixed; bottom: 18px; left: 50%; transform: translateX(-50%); background: var(--ink); color: var(--bg); padding: 10px 16px; border-radius: 10px; z-index: 50; max-width: calc(100% - 32px); }

/* Đăng nhập */
.login { min-height: 100vh; display: grid; place-items: center; padding: 16px; }
.login .card { width: min(400px, 100%); }

/* Kịch bản */
.scene { border: 1px solid var(--line); border-radius: 10px; padding: 12px; background: var(--panel-2); }
.scene .row > * { flex: 1 1 160px; }
.scene .num { font-weight: 800; color: var(--accent); flex: 0 0 auto; }

/* Dựng video */
.stage { background: #000; border-radius: 10px; overflow: hidden; display: grid; place-items: center; }
.stage canvas, .stage video { max-width: 100%; max-height: 70vh; display: block; }
.contact { display: grid; gap: 6px; grid-template-columns: repeat(auto-fill, minmax(110px, 1fr)); }
.contact img { width: 100%; border-radius: 6px; border: 1px solid var(--line); }
.progress { height: 8px; background: var(--panel-2); border-radius: 999px; overflow: hidden; }
.progress > i { display: block; height: 100%; background: var(--accent); width: 0; transition: width .2s; }
.swatches { display: flex; gap: 4px; }
.swatches i { width: 18px; height: 18px; border-radius: 4px; border: 1px solid rgb(0 0 0 / .1); }
.theme-pick { cursor: pointer; }
.theme-pick[aria-pressed="true"] { border-color: var(--accent); box-shadow: 0 0 0 2px var(--accent-soft); }

@media print {
  .side, .no-print, .btn { display: none !important; }
  .shell { display: block; }
  main { padding: 0; max-width: none; }
  .card { box-shadow: none; border: 0; padding: 0; }
  body { background: #fff; color: #000; font-size: 11pt; }
}