:root {
  --bg: #f5f7fb;
  --surface: #ffffff;
  --surface-2: #f1f4f9;
  --text: #0f172a;
  --text-2: #475569;
  --muted: #64748b;
  --border: #e2e8f0;
  --primary: #1d4ed8;
  --primary-hover: #1e40af;
  --primary-soft: #eef2ff;
  --primary-ink: #ffffff;
  --accent: #0ea5a4;
  --success: #047857;
  --success-soft: #ecfdf5;
  --warning: #b45309;
  --warning-soft: #fffbeb;
  --danger: #b91c1c;
  --danger-soft: #fef2f2;
  --code-bg: #0b1220;
  --code-text: #e2e8f0;
  --shadow: 0 1px 2px rgba(15, 23, 42, .06), 0 8px 24px rgba(15, 23, 42, .06);
  --radius: 12px;
  --font: 'Be Vietnam Pro', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0b1120; --surface: #111a2e; --surface-2: #17223a; --text: #e5edf8; --text-2: #b4c0d3; --muted: #8b9ab1;
    --border: #22304a; --primary: #6d8dff; --primary-hover: #8aa3ff; --primary-soft: #1a2550; --primary-ink: #0b1120;
    --success: #34d399; --success-soft: #0f2a22; --warning: #fbbf24; --warning-soft: #2b2210; --danger: #f87171; --danger-soft: #2d1515;
    --code-bg: #070c18; --shadow: 0 1px 2px rgba(0,0,0,.4), 0 8px 24px rgba(0,0,0,.25); color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #0b1120; --surface: #111a2e; --surface-2: #17223a; --text: #e5edf8; --text-2: #b4c0d3; --muted: #8b9ab1;
  --border: #22304a; --primary: #6d8dff; --primary-hover: #8aa3ff; --primary-soft: #1a2550; --primary-ink: #0b1120;
  --success: #34d399; --success-soft: #0f2a22; --warning: #fbbf24; --warning-soft: #2b2210; --danger: #f87171; --danger-soft: #2d1515;
  --code-bg: #070c18; --shadow: 0 1px 2px rgba(0,0,0,.4), 0 8px 24px rgba(0,0,0,.25); color-scheme: dark;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--text); font: 15px/1.6 var(--font); }
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3, h4 { line-height: 1.25; margin: 0 0 .5em; letter-spacing: -.01em; }
p { margin: 0 0 1em; }
code, pre, .mono { font-family: var(--mono); font-size: .88em; }
:not(pre) > code { background: var(--surface-2); padding: .1em .4em; border-radius: 6px; border: 1px solid var(--border); }
pre { background: var(--code-bg); color: var(--code-text); padding: 16px 18px; border-radius: 10px; overflow-x: auto; line-height: 1.55; margin: 0 0 1.2em; position: relative; }
pre .copy-code { position: absolute; top: 8px; right: 8px; }
img { max-width: 100%; }
.container { max-width: 1160px; margin: 0 auto; padding: 0 16px; }
.muted { color: var(--muted); }
.small { font-size: 13px; }
.hidden { display: none !important; }
.row { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.spacer { flex: 1; }
.grid { display: grid; gap: 16px; }
.grid-2 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.grid-4 { grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); }

/* Nút */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; border: 1px solid var(--border); background: var(--surface); color: var(--text);
  padding: 9px 16px; border-radius: 10px; font: 600 14px var(--font); cursor: pointer; text-decoration: none !important; transition: background .15s, border-color .15s; white-space: nowrap; }
.btn:hover { background: var(--surface-2); }
.btn:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }
.btn-primary { background: var(--primary); border-color: var(--primary); color: var(--primary-ink); }
.btn-primary:hover { background: var(--primary-hover); }
.btn-danger { color: var(--danger); }
.btn-sm { padding: 5px 10px; font-size: 13px; border-radius: 8px; }
.btn-lg { padding: 13px 22px; font-size: 16px; }
.btn[disabled] { opacity: .55; cursor: not-allowed; }

/* Form */
label { display: block; font-weight: 600; font-size: 14px; margin-bottom: 6px; }
.field { margin-bottom: 16px; }
.hint { font-size: 13px; color: var(--muted); margin-top: 4px; }
input, select, textarea { width: 100%; padding: 10px 12px; border: 1px solid var(--border); border-radius: 10px; background: var(--surface); color: var(--text); font: 15px var(--font); }
textarea { min-height: 120px; resize: vertical; }
.input-group { display: flex; gap: 8px; }
.input-group input { flex: 1; min-width: 0; }

/* Thẻ */
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow); }
.card h3 { font-size: 16px; }
.card-head { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; flex-wrap: wrap; }
.card-head h3 { margin: 0; }

.badge { display: inline-flex; align-items: center; gap: 5px; padding: 2px 9px; border-radius: 999px; font-size: 12px; font-weight: 600; background: var(--surface-2); color: var(--text-2); border: 1px solid var(--border); white-space: nowrap; }
.badge::before { content: ''; width: 6px; height: 6px; border-radius: 50%; background: currentColor; }
.badge.plain::before { display: none; }
.b-paid, .b-success, .b-matched, .b-active { background: var(--success-soft); color: var(--success); border-color: transparent; }
.b-pending { background: var(--warning-soft); color: var(--warning); border-color: transparent; }
.b-expired, .b-cancelled, .b-ignored, .b-duplicate { color: var(--muted); }
.b-failed, .b-unmatched, .b-locked { background: var(--danger-soft); color: var(--danger); border-color: transparent; }
.b-test { background: var(--warning-soft); color: var(--warning); border-color: transparent; }
.b-live { background: var(--primary-soft); color: var(--primary); border-color: transparent; }

.alert { padding: 12px 14px; border-radius: 10px; border: 1px solid var(--border); background: var(--surface-2); margin-bottom: 16px; font-size: 14px; }
.alert-warn { background: var(--warning-soft); border-color: transparent; color: var(--text); }
.alert-info { background: var(--primary-soft); border-color: transparent; }
.alert-error { background: var(--danger-soft); border-color: transparent; color: var(--danger); }

/* Bảng */
.table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: 10px; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 11px 14px; border-bottom: 1px solid var(--border); vertical-align: middle; }
th { font-size: 12px; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); background: var(--surface-2); font-weight: 600; white-space: nowrap; }
tr:last-child td { border-bottom: 0; }
tbody tr.clickable { cursor: pointer; }
tbody tr.clickable:hover { background: var(--surface-2); }
.num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
.empty { text-align: center; padding: 36px 16px; color: var(--muted); }

/* Header công khai */
.site-header { position: sticky; top: 0; z-index: 20; background: color-mix(in srgb, var(--surface) 88%, transparent); backdrop-filter: blur(10px); border-bottom: 1px solid var(--border); }
.site-header .container { display: flex; align-items: center; gap: 24px; height: 64px; }
.logo { display: inline-flex; align-items: center; gap: 9px; font-weight: 800; font-size: 19px; color: var(--text) !important; text-decoration: none !important; letter-spacing: -.02em; }
.logo-img { height: 32px; width: auto; max-width: 180px; object-fit: contain; display: block; }
.logo-mark { width: 30px; height: 30px; border-radius: 9px; background: linear-gradient(135deg, var(--primary), var(--accent)); display: grid; place-items: center; color: #fff; font-size: 14px; font-weight: 800; }
.nav { display: flex; gap: 22px; }
.nav a { color: var(--text-2); font-weight: 500; font-size: 14px; }
.nav a:hover, .nav a.active { color: var(--text); text-decoration: none; }
.menu-toggle { display: none; }
.nav .mobile-only { display: none; }
@media (max-width: 760px) {
  .nav { display: none; position: absolute; top: 64px; left: 0; right: 0; flex-direction: column; gap: 0; background: var(--surface); border-bottom: 1px solid var(--border); padding: 8px 16px; }
  .nav.open { display: flex; }
  .nav a { padding: 10px 0; }
  .menu-toggle { display: inline-flex; }
  .header-cta { display: none; }
  .nav .mobile-only { display: block; }
}

/* Trang chủ */
.hero { padding: 72px 0 56px; }
.hero-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 48px; align-items: center; }
.hero h1 { font-size: clamp(32px, 5vw, 50px); font-weight: 800; letter-spacing: -.03em; }
.hero h1 span { background: linear-gradient(90deg, var(--primary), var(--accent)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero p.lead { font-size: 18px; color: var(--text-2); max-width: 560px; }
.eyebrow { display: inline-block; font-size: 13px; font-weight: 600; color: var(--primary); background: var(--primary-soft); padding: 4px 12px; border-radius: 999px; margin-bottom: 16px; }
.section { padding: 64px 0; }
.section-alt { background: var(--surface); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.section-title { text-align: center; max-width: 680px; margin: 0 auto 40px; }
.section-title h2 { font-size: clamp(26px, 3.5vw, 34px); font-weight: 800; }
.section-title p { color: var(--text-2); }
.feature { padding: 22px; }
.feature .icon { width: 42px; height: 42px; border-radius: 11px; background: var(--primary-soft); color: var(--primary); display: grid; place-items: center; margin-bottom: 14px; }
.feature .icon svg { width: 22px; height: 22px; }
.feature p { color: var(--text-2); margin: 0; font-size: 14px; }
.steps { counter-reset: s; }
.step { position: relative; padding-left: 52px; margin-bottom: 22px; }
.step::before { counter-increment: s; content: counter(s); position: absolute; left: 0; top: 0; width: 36px; height: 36px; border-radius: 50%; background: var(--primary); color: var(--primary-ink); display: grid; place-items: center; font-weight: 700; }
.step h4 { margin-bottom: 2px; }
.step p { color: var(--text-2); margin: 0; font-size: 14px; }
.bank-chip img { height: 20px; width: auto; max-width: 60px; object-fit: contain; }
.bank-chip { gap: 8px; align-items: center; display: inline-flex; padding: 8px 14px; border: 1px solid var(--border); border-radius: 10px; background: var(--surface); font-weight: 600; font-size: 14px; }
.flow { display: grid; gap: 10px; }
.flow-item { display: flex; align-items: center; flex-wrap: wrap; gap: 6px 12px; padding: 12px 14px; border-radius: 10px; background: var(--surface-2); font-size: 14px; }
.flow-item b { font-size: 12px; color: var(--muted); min-width: 64px; }
.faq details { border-bottom: 1px solid var(--border); padding: 14px 0; }
.faq summary { cursor: pointer; font-weight: 600; list-style: none; display: flex; justify-content: space-between; gap: 12px; }
.faq summary::after { content: '+'; color: var(--muted); font-size: 20px; line-height: 1; }
.faq details[open] summary::after { content: '−'; }
.faq details p { color: var(--text-2); margin: 10px 0 0; }
.cta-band { background: linear-gradient(135deg, var(--primary), #0e7490); color: #fff; border-radius: 18px; padding: 40px; display: flex; align-items: center; gap: 24px; flex-wrap: wrap; }
.cta-band h2 { color: #fff; margin: 0; }
.cta-band p { color: rgba(255,255,255,.85); margin: 6px 0 0; }
.cta-band .btn { background: #fff; color: #1e3a8a; border-color: #fff; }
.site-footer { border-top: 1px solid var(--border); padding: 40px 0; margin-top: 40px; font-size: 14px; color: var(--muted); }
.site-footer .cols { display: grid; grid-template-columns: 2fr repeat(3, 1fr); gap: 24px; }
.site-footer h5 { color: var(--text); font-size: 14px; margin: 0 0 10px; }
.site-footer a { display: block; color: var(--muted); margin-bottom: 6px; }
@media (max-width: 860px) {
  .hero-grid { grid-template-columns: 1fr; }
  .site-footer .cols { grid-template-columns: 1fr 1fr; }
  .cta-band { padding: 28px 20px; }
}

/* Đăng nhập */
.auth-wrap { min-height: calc(100vh - 64px); display: grid; place-items: center; padding: 40px 16px; }
.auth-card { width: 100%; max-width: 420px; }
.auth-card h1 { font-size: 24px; }

/* Dashboard */
.app { display: grid; grid-template-columns: 248px 1fr; min-height: 100vh; }
.sidebar { background: var(--surface); border-right: 1px solid var(--border); padding: 18px 14px; position: sticky; top: 0; height: 100vh; display: flex; flex-direction: column; gap: 4px; overflow-y: auto; }
.sidebar .logo { padding: 4px 8px 18px; }
.side-link { display: flex; align-items: center; gap: 10px; padding: 9px 12px; border-radius: 9px; color: var(--text-2) !important; font-weight: 500; font-size: 14px; text-decoration: none !important; cursor: pointer; border: 0; background: none; width: 100%; text-align: left; font-family: var(--font); }
.side-link svg { width: 18px; height: 18px; flex: none; }
.side-link:hover { background: var(--surface-2); color: var(--text) !important; }
.side-link.active { background: var(--primary-soft); color: var(--primary) !important; font-weight: 600; }
.side-section { font-size: 11px; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); padding: 14px 12px 4px; font-weight: 600; }
.main { min-width: 0; }
.topbar { display: flex; align-items: center; gap: 12px; padding: 14px 28px; border-bottom: 1px solid var(--border); background: var(--surface); position: sticky; top: 0; z-index: 10; }
.topbar h2 { margin: 0; font-size: 18px; }
.content { padding: 28px; max-width: 1200px; }
.mode-switch { display: inline-flex; border: 1px solid var(--border); border-radius: 10px; padding: 3px; background: var(--surface-2); }
.mode-switch button { border: 0; background: none; padding: 5px 12px; border-radius: 7px; font: 600 13px var(--font); color: var(--muted); cursor: pointer; }
.mode-switch button.on { background: var(--surface); color: var(--text); box-shadow: 0 1px 2px rgba(0,0,0,.08); }
.stat .label { font-size: 13px; color: var(--muted); font-weight: 500; }
.stat .value { font-size: 26px; font-weight: 700; letter-spacing: -.02em; margin-top: 4px; font-variant-numeric: tabular-nums; }
.stat .sub { font-size: 12px; color: var(--muted); }
.checklist { list-style: none; padding: 0; margin: 0; }
.checklist li { display: flex; gap: 12px; align-items: flex-start; padding: 12px 0; border-bottom: 1px solid var(--border); }
.checklist li:last-child { border-bottom: 0; }
.check { width: 22px; height: 22px; border-radius: 50%; border: 2px solid var(--border); flex: none; display: grid; place-items: center; margin-top: 1px; }
.check.done { background: var(--success); border-color: var(--success); color: #fff; }
.check.done::after { content: '✓'; font-size: 12px; font-weight: 700; }
.kv { display: grid; grid-template-columns: 160px 1fr; gap: 8px 16px; font-size: 14px; }
.kv dt { color: var(--muted); }
.kv dd { margin: 0; word-break: break-all; }
.secret { font-family: var(--mono); font-size: 13px; background: var(--surface-2); border: 1px solid var(--border); padding: 8px 10px; border-radius: 8px; word-break: break-all; flex: 1; min-width: 0; }
.mobile-bar { display: none; }
@media (max-width: 900px) {
  .app { grid-template-columns: 1fr; }
  .sidebar { position: fixed; left: 0; top: 0; z-index: 40; width: 260px; transform: translateX(-100%); transition: transform .2s; box-shadow: var(--shadow); }
  .sidebar.open { transform: none; }
  .mobile-bar { display: inline-flex; }
  .content { padding: 18px 16px; }
  .topbar { padding: 12px 16px; }
  .kv { grid-template-columns: 1fr; gap: 2px; }
  .kv dd { margin-bottom: 8px; }
}

/* Biểu đồ */
.chart { position: relative; }
.chart svg { width: 100%; height: 220px; display: block; overflow: visible; }
.chart .bar { fill: var(--primary); transition: opacity .1s; }
.chart .bar-hit { fill: transparent; cursor: default; }
.chart .grid-line { stroke: var(--border); stroke-width: 1; }
.chart .axis-text { fill: var(--muted); font-size: 11px; font-family: var(--font); }
.chart-tip { position: absolute; pointer-events: none; background: var(--text); color: var(--bg); font-size: 12px; padding: 6px 9px; border-radius: 7px; white-space: nowrap; transform: translate(-50%, -110%); opacity: 0; transition: opacity .1s; }

/* Ngăn kéo chi tiết */
.drawer-backdrop { position: fixed; inset: 0; background: rgba(15, 23, 42, .45); z-index: 50; }
.drawer { position: fixed; top: 0; right: 0; bottom: 0; width: min(560px, 100%); background: var(--surface); z-index: 51; overflow-y: auto; padding: 24px; box-shadow: var(--shadow); }
.modal { position: fixed; z-index: 51; top: 50%; left: 50%; transform: translate(-50%, -50%); width: min(480px, calc(100% - 32px)); background: var(--surface); border-radius: 14px; padding: 24px; box-shadow: var(--shadow); max-height: 90vh; overflow-y: auto; }
.timeline { border-left: 2px solid var(--border); padding-left: 16px; margin-left: 6px; }
.timeline .ev { position: relative; padding-bottom: 14px; font-size: 14px; }
.timeline .ev::before { content: ''; position: absolute; left: -23px; top: 6px; width: 12px; height: 12px; border-radius: 50%; background: var(--surface); border: 2px solid var(--primary); }

/* Toast */
#toasts { position: fixed; bottom: 20px; right: 20px; z-index: 100; display: grid; gap: 8px; }
.toast { background: var(--text); color: var(--bg); padding: 11px 16px; border-radius: 10px; font-size: 14px; box-shadow: var(--shadow); max-width: 360px; animation: pop .2s ease; }
.toast.error { background: var(--danger); color: #fff; }
@keyframes pop { from { transform: translateY(8px); opacity: 0; } }

/* Trang thanh toán */
.pay-wrap { max-width: 920px; margin: 0 auto; padding: 32px 16px; }
.pay-card { display: grid; grid-template-columns: 340px 1fr; overflow: hidden; padding: 0; }
.pay-qr { background: linear-gradient(160deg, var(--primary), #0e7490); color: #fff; padding: 28px; text-align: center; display: flex; flex-direction: column; align-items: center; gap: 14px; }
.qr-box { background: #fff; padding: 14px; border-radius: 14px; width: 260px; height: 260px; display: grid; place-items: center; }
.qr-box svg, .qr-box img { width: 100%; height: 100%; }
.pay-info { padding: 28px; }
.pay-amount { font-size: 32px; font-weight: 800; letter-spacing: -.02em; }
.info-row { display: flex; align-items: center; gap: 12px; padding: 12px 0; border-bottom: 1px dashed var(--border); }
.info-row .k { color: var(--muted); font-size: 13px; min-width: 110px; }
.info-row .v { font-weight: 600; flex: 1; word-break: break-all; }
.highlight { color: var(--danger); font-family: var(--mono); font-size: 17px; }
.countdown { font-variant-numeric: tabular-nums; font-weight: 700; }
.success-icon { width: 72px; height: 72px; border-radius: 50%; background: var(--success-soft); color: var(--success); display: grid; place-items: center; margin: 0 auto 16px; font-size: 36px; }
@media (max-width: 760px) {
  .pay-card { grid-template-columns: 1fr; }
  .qr-box { width: 240px; height: 240px; }
  .pay-info, .pay-qr { padding: 20px 16px; }
}

/* Tài liệu */
.docs { display: grid; grid-template-columns: 240px 1fr; gap: 40px; padding: 32px 16px 64px; }
.docs-nav { position: sticky; top: 88px; align-self: start; max-height: calc(100vh - 100px); overflow-y: auto; font-size: 14px; }
.docs-nav h6 { font-size: 11px; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); margin: 18px 0 6px; }
.docs-nav a { display: block; padding: 5px 10px; color: var(--text-2); border-left: 2px solid transparent; }
.docs-nav a.active { color: var(--primary); border-left-color: var(--primary); font-weight: 600; }
.docs-body { min-width: 0; max-width: 820px; }
.docs-body section { padding-top: 12px; margin-bottom: 40px; scroll-margin-top: 80px; }
.docs-body h1 { font-size: 34px; font-weight: 800; }
.docs-body h2 { font-size: 24px; padding-top: 8px; border-top: 1px solid var(--border); margin-top: 8px; padding-top: 24px; }
.docs-body h3 { font-size: 17px; margin-top: 24px; }
.docs-body li { margin-bottom: 6px; }
.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--border); margin-bottom: -1px; flex-wrap: wrap; }
.tab { border: 1px solid transparent; background: none; padding: 8px 14px; font: 600 13px var(--font); color: var(--muted); cursor: pointer; border-radius: 8px 8px 0 0; }
.tab.on { border-color: var(--border); border-bottom-color: var(--code-bg); background: var(--code-bg); color: var(--code-text); }
.tabbed pre { border-top-left-radius: 0; }
.method { display: inline-block; font: 700 12px var(--mono); padding: 2px 7px; border-radius: 6px; margin-right: 8px; }
.m-post { background: var(--success-soft); color: var(--success); }
.m-get { background: var(--primary-soft); color: var(--primary); }
.endpoint { font-family: var(--mono); font-size: 15px; padding: 12px 14px; background: var(--surface); border: 1px solid var(--border); border-radius: 10px; margin-bottom: 14px; word-break: break-all; }
@media (max-width: 900px) {
  .docs { grid-template-columns: 1fr; gap: 16px; }
  .docs-nav { position: static; max-height: none; border: 1px solid var(--border); border-radius: 10px; padding: 8px; background: var(--surface); }
}

/* Bổ sung */
.full { width: 100%; }
.faq { max-width: 780px; }
input[type="checkbox"].checkbox { width: 18px; height: 18px; flex: none; margin: 0; }
.inline-label { display: inline; font-weight: 400; margin: 0; flex: 1; font-size: 14px; }
.field.row { flex-wrap: nowrap; align-items: flex-start; }
.hint.ok { color: var(--success); }
.mt-0 { margin-top: 0; } .mt-8 { margin-top: 8px; } .mt-16 { margin-top: 16px; } .mt-24 { margin-top: 24px; }
.mb-0 { margin-bottom: 0; } .mb-8 { margin-bottom: 8px; } .mb-16 { margin-bottom: 16px; }
.text-center { text-align: center; }
.w-auto { width: auto; }
.nowrap { white-space: nowrap; }
.truncate { max-width: 260px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; display: block; }
@media (max-width: 600px) { .hidden-sm { display: none; } }
.section-gap { display: grid; gap: 20px; }
.steps-inline ol { padding-left: 20px; margin: 0; }
.steps-inline li { margin-bottom: 6px; }
.toolbar { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 14px; }
.toolbar input, .toolbar select { width: auto; min-width: 160px; flex: 0 1 auto; }
.toolbar input[type="search"] { flex: 1 1 220px; }
.key-reveal { background: var(--warning-soft); border-radius: 10px; padding: 14px; margin: 12px 0; }
.qr-mini { width: 180px; height: 180px; background: #fff; padding: 10px; border-radius: 10px; border: 1px solid var(--border); }
.qr-mini svg { width: 100%; height: 100%; }
.card-link { color: var(--text) !important; text-decoration: none !important; transition: border-color .15s, transform .15s; }
.card-link:hover { border-color: var(--primary); transform: translateY(-2px); }
.pre-wrap { white-space: pre-wrap; word-break: break-word; }
details.info-row { display: block; }
details.info-row summary { cursor: pointer; list-style: none; }

:not(pre) > code { overflow-wrap: anywhere; }
.hero-grid > *, .grid > *, .docs > * { min-width: 0; }

/* Trang quản trị */
.checkline { display: flex; gap: 8px; align-items: center; font-weight: 500; margin: 6px 0; cursor: pointer; }
.checkline input { width: auto; margin: 0; }
.row input[type="file"] { width: auto; flex: 1 1 200px; min-width: 0; padding: 6px; }
.row > input:not([type]) { flex: 1 1 200px; width: auto; }
.thumb { display: inline-grid; place-items: center; width: auto; max-width: 160px; object-fit: contain; border: 1px solid var(--border); border-radius: 8px; padding: 3px; background: var(--surface); vertical-align: middle; }
.thumb-empty { color: var(--muted); font-size: 12px; padding: 0; }
tr.clickable { cursor: pointer; }
tr.clickable:hover td, tr.clickable:focus td { background: var(--surface-2); }
h4 { font-size: 15px; margin: 0 0 8px; }
.thumb.t28 { height: 28px; } .thumb.t32 { height: 32px; } .thumb.t40 { height: 40px; }
.thumb.sq.t28 { width: 28px; } .thumb.sq.t32 { width: 32px; } .thumb.sq.t40 { width: 40px; }
.upper { text-transform: uppercase; }