/* Peerova — design tokens + components. No external fonts (strict CSP). */
:root {
  color-scheme: dark;
  --bg: #070A12;
  --bg-2: #0b0f19;
  --surface: #0f1522;
  --surface-2: #141c2c;
  --line: #1f2a3e;
  --line-2: #2a3850;
  --text: #e8edf6;
  --text-2: #a7b2c6;
  --muted: #6f7b91;
  --accent: #7AA2FF;
  --accent-2: #FF7A59;
  --accent-3: #B49BFF;
  --warn: #f5b84a;
  --bad: #ff6b6b;
  --good: #3ddc84;
  --glow: rgba(110, 155, 255, .26);
  --grad: linear-gradient(120deg, #FF8A65 0%, #C77DDB 50%, #6E9BFF 100%);
  --on-grad: #0A0E18;
  /* spacing scale 4/8/12/16/24/32 + one radius scale */
  --s1: 4px; --s2: 8px; --s3: 12px; --s4: 16px; --s5: 24px; --s6: 32px;
  --radius-xs: 6px; --radius-sm: 8px; --radius: 12px; --radius-lg: 16px;
  --btn-h: 40px; --header-h: 64px;
  --shadow: 0 20px 60px -20px rgba(0, 0, 0, .65);
  --mono: ui-monospace, "JetBrains Mono", "SFMono-Regular", "Cascadia Code", Menlo, Consolas, monospace;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Inter", "Helvetica Neue", Arial, "Noto Sans", sans-serif;
  /* chart series (validated categorical order: blue, orange, aqua, yellow) */
  --series-1: #3987e5; --series-2: #d95926; --series-3: #199e70; --series-4: #c98500;
}
@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) {
    color-scheme: light;
    --bg: #f6f8fb; --bg-2: #eef2f8; --surface: #ffffff; --surface-2: #f3f6fb; --line: #dde3ee; --line-2: #c9d2e1;
    --text: #0c1220; --text-2: #3e4a60; --muted: #6a768c; --accent: #2F6BEB; --accent-2: #E2553A; --accent-3: #7C5CE0;
    --glow: rgba(47, 107, 235, .18); --shadow: 0 20px 50px -24px rgba(20, 30, 60, .25);
    --grad: linear-gradient(120deg, #C2410C 0%, #7E3AB8 50%, #1D4ED8 100%); --on-grad: #ffffff;
    --series-1: #2a78d6; --series-2: #eb6834; --series-3: #1baf7a; --series-4: #eda100;
  }
}
:root[data-theme="light"] {
  color-scheme: light;
  --bg: #f6f8fb; --bg-2: #eef2f8; --surface: #ffffff; --surface-2: #f3f6fb; --line: #dde3ee; --line-2: #c9d2e1;
  --text: #0c1220; --text-2: #3e4a60; --muted: #6a768c; --accent: #2F6BEB; --accent-2: #E2553A; --accent-3: #7C5CE0;
  --glow: rgba(47, 107, 235, .18); --shadow: 0 20px 50px -24px rgba(20, 30, 60, .25);
  --grad: linear-gradient(120deg, #C2410C 0%, #7E3AB8 50%, #1D4ED8 100%); --on-grad: #ffffff;
  --series-1: #2a78d6; --series-2: #eb6834; --series-3: #1baf7a; --series-4: #eda100;
}

/* language switching: content carries lang="vi" / lang="en" */
html[data-lang="vi"] body [lang="en"], html[data-lang="en"] body [lang="vi"] { display: none !important; }

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0; background: var(--bg); color: var(--text); font: 16px/1.6 var(--sans);
  -webkit-font-smoothing: antialiased; min-height: 100vh; display: flex; flex-direction: column;
}
main { flex: 1; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
img, svg, canvas { max-width: 100%; }
code, pre, kbd { font-family: var(--mono); font-size: .9em; }
:not(pre) > code { background: var(--surface-2); border: 1px solid var(--line); padding: .1em .4em; border-radius: var(--radius-xs); word-break: break-word; }
h1, h2, h3, h4 { line-height: 1.2; letter-spacing: -.02em; margin: 0 0 .6em; }
h1 { font-size: clamp(2.1rem, 5.4vw, 4.1rem); letter-spacing: -.035em; }
h2 { font-size: clamp(1.6rem, 3.2vw, 2.4rem); }
h3 { font-size: 1.15rem; }
p { margin: 0 0 1em; }
.wrap { width: 100%; max-width: 1180px; margin: 0 auto; padding: 0 16px; }
@media (min-width: 720px) { .wrap { padding: 0 28px; } }
.muted { color: var(--muted); }
.text-2 { color: var(--text-2); }
.grad-text { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.mono { font-family: var(--mono); }
.hidden { display: none !important; }
.center { text-align: center; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* ---------- header ---------- */
.site-header { position: sticky; top: 0; z-index: 50; backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  background: color-mix(in srgb, var(--bg) 78%, transparent); border-bottom: 1px solid var(--line); }
.nav { display: flex; align-items: center; gap: var(--s4); height: var(--header-h); }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 1.15rem; color: var(--text); letter-spacing: -.02em; }
.brand:hover { text-decoration: none; }
.brand .logo { width: 28px; height: 28px; }
.nav-links { display: flex; gap: 4px; margin-left: 12px; }
.nav-links a { color: var(--text-2); padding: 8px 12px; border-radius: var(--radius-sm); font-size: .95rem; }
.nav-links a:hover, .nav-links a.active { color: var(--text); background: var(--surface-2); text-decoration: none; }
.nav-right { margin-left: auto; display: flex; align-items: center; gap: 8px; }
.icon-btn { background: transparent; border: 1px solid var(--line); color: var(--text-2); height: var(--btn-h); width: var(--btn-h); padding: 0;
  border-radius: var(--radius-sm); cursor: pointer; font: 600 .8rem var(--sans); display: inline-flex; align-items: center; justify-content: center; gap: 6px; }
.icon-btn:hover { color: var(--text); border-color: var(--line-2); }
.menu-btn { display: none; }

/* ---------- buttons / forms ---------- */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: var(--s2); height: var(--btn-h); padding: 0 var(--s4); border-radius: var(--radius-sm);
  font: 650 .95rem var(--sans); cursor: pointer; border: 1px solid transparent; transition: transform .12s, box-shadow .2s, background .2s;
  white-space: nowrap; color: var(--text); background: var(--surface-2); border-color: var(--line); text-decoration: none !important; }
.btn:hover { border-color: var(--line-2); }
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--grad); color: var(--on-grad); border: 0; box-shadow: 0 8px 30px -8px var(--glow); }
.btn-primary:hover { box-shadow: 0 10px 40px -6px var(--glow); }
.btn-ghost { background: transparent; }
.btn-lg { height: 48px; padding: 0 var(--s5); font-size: 1rem; }
.btn-sm { height: var(--btn-h); padding: 0 var(--s3); font-size: .875rem; }
.btn-danger { color: var(--bad); }
.btn[disabled] { opacity: .5; cursor: not-allowed; }
label { display: block; font-size: .88rem; color: var(--text-2); margin: 0 0 6px; font-weight: 600; }
input, select, textarea { width: 100%; height: var(--btn-h); border-radius: var(--radius-sm); border: 1px solid var(--line); background: var(--bg-2);
  color: var(--text); padding: 0 12px; font: 15px var(--sans); outline: none; transition: border-color .15s, box-shadow .15s; }
textarea { height: auto; padding: 10px 12px; }
input:focus, select:focus, textarea:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--glow); }
.field { margin-bottom: 14px; }
.row { display: flex; gap: 10px; flex-wrap: wrap; align-items: end; }
.row > * { flex: 1 1 160px; }
.row > .btn { flex: 0 0 auto; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

/* ---------- cards / sections ---------- */
section { padding: 84px 0; position: relative; }
.section-head { max-width: 720px; margin: 0 auto 44px; text-align: center; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; font: 700 .75rem var(--mono); letter-spacing: .14em; text-transform: uppercase;
  color: var(--accent); margin-bottom: 14px; }
.eyebrow::before { content: ""; width: 18px; height: 1px; background: currentColor; }
.card { background: linear-gradient(180deg, color-mix(in srgb, var(--surface) 92%, transparent), var(--surface));
  border: 1px solid var(--line); border-radius: var(--radius); padding: var(--s5); box-shadow: var(--shadow); min-width: 0; }
.grid { display: grid; gap: var(--s4); }
.grid-2 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 360px), 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr)); }
.grid-4 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 220px), 1fr)); }
.badge { display: inline-flex; align-items: center; gap: 6px; font: 700 .72rem var(--mono); text-transform: uppercase; letter-spacing: .06em;
  padding: 3px 8px; border-radius: 999px; border: 1px solid var(--line-2); color: var(--text-2); white-space: nowrap; }
.badge.ok { color: var(--good); border-color: color-mix(in srgb, var(--good) 40%, transparent); }
.badge.warn { color: var(--warn); border-color: color-mix(in srgb, var(--warn) 40%, transparent); }
.badge.bad { color: var(--bad); border-color: color-mix(in srgb, var(--bad) 40%, transparent); }
.badge.accent { color: var(--accent); border-color: color-mix(in srgb, var(--accent) 45%, transparent); }

/* ---------- hero ---------- */
.hero { padding: 56px 0 40px; overflow: hidden; }
.hero-bg { position: absolute; inset: 0; pointer-events: none;
  background: radial-gradient(900px 420px at 70% 10%, color-mix(in srgb, var(--accent-2) 22%, transparent), transparent 70%),
              radial-gradient(700px 380px at 15% 30%, color-mix(in srgb, var(--accent) 16%, transparent), transparent 70%); }
.hero-grid { position: relative; display: grid; gap: 34px; grid-template-columns: 1fr; align-items: center; }
@media (min-width: 980px) { .hero-grid { grid-template-columns: 1.02fr 1fr; } }
.hero h1 { margin-bottom: var(--s4); }
.hero .lead { font-size: clamp(1.02rem, 1.6vw, 1.22rem); color: var(--text-2); max-width: 600px; }
.hero-cta { display: flex; gap: 12px; flex-wrap: wrap; margin: 26px 0 18px; }
.hero-points { display: flex; flex-wrap: wrap; gap: 8px 18px; color: var(--muted); font-size: .9rem; padding: 0; margin: 0; list-style: none; }
.hero-points li::before { content: "✓ "; color: var(--accent); font-weight: 800; }
.hero-canvas-wrap { position: relative; border-radius: var(--radius-lg); border: 1px solid var(--line); overflow: hidden; aspect-ratio: 4 / 3.1;
  background: radial-gradient(circle at 50% 40%, color-mix(in srgb, var(--surface-2) 80%, transparent), var(--bg-2)); box-shadow: var(--shadow); }
.hero-canvas-wrap canvas { width: 100%; height: 100%; display: block; }
.canvas-caption { position: absolute; left: 12px; bottom: 10px; right: 12px; display: flex; justify-content: space-between; gap: 8px;
  font: 600 .72rem var(--mono); color: var(--muted); pointer-events: none; flex-wrap: wrap; }
.pill-live { display: inline-flex; align-items: center; gap: 6px; }
.pill-live::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--good); box-shadow: 0 0 10px var(--good); animation: pulse 1.6s infinite; }
@keyframes pulse { 50% { opacity: .35; } }

/* stats strip */
.stats { display: grid; grid-template-columns: repeat(2, 1fr); border: 1px solid var(--line); border-radius: var(--radius);
  background: var(--surface); overflow: hidden; margin-top: 44px; position: relative; }
.stats .stat:last-child { grid-column: 1 / -1; }
@media (min-width: 860px) { .stats { grid-template-columns: repeat(4, 1fr) 1.5fr; } .stats .stat:last-child { grid-column: auto; } }
.stat { padding: 18px 20px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); min-width: 0; }
.stat-label { font: 700 .7rem var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--muted); }
.stat-value { font: 800 1.85rem var(--sans); letter-spacing: -.03em; margin-top: 4px; font-variant-numeric: tabular-nums; }
.method-bar { display: flex; height: 8px; border-radius: 4px; overflow: hidden; gap: 2px; margin-top: 12px; background: var(--surface-2); }
.method-bar span { display: block; min-width: 0; transition: flex-basis .6s; }
.method-legend { display: flex; flex-wrap: wrap; gap: 4px 12px; margin-top: 8px; font-size: .75rem; color: var(--text-2); }
.method-legend i { display: inline-block; width: 8px; height: 8px; border-radius: 2px; margin-right: 5px; }
.sw-1 { background: var(--series-1); } .sw-2 { background: var(--series-2); } .sw-3 { background: var(--series-3); } .sw-4 { background: var(--series-4); }

/* features */
.feature { position: relative; overflow: hidden; }
.feature .ico { width: 40px; height: 40px; border-radius: var(--radius-sm); display: grid; place-items: center; margin-bottom: 14px;
  background: color-mix(in srgb, var(--accent) 12%, transparent); border: 1px solid color-mix(in srgb, var(--accent) 30%, transparent); color: var(--accent); }
.feature .ico svg { width: 22px; height: 22px; }
.feature p { color: var(--text-2); margin: 0; font-size: .95rem; }
.feature:hover { border-color: var(--line-2); }

/* code tabs */
.tabs { display: flex; gap: 4px; flex-wrap: wrap; border-bottom: 1px solid var(--line); padding: 0 8px; background: var(--bg-2); }
.tab { background: none; border: 0; color: var(--muted); font: 650 .85rem var(--sans); padding: 12px 12px; cursor: pointer; border-bottom: 2px solid transparent; margin-bottom: -1px; }
.tab[aria-selected="true"] { color: var(--text); border-color: var(--accent); }
.code-card { padding: 0; overflow: hidden; }
.code-head { display: flex; align-items: center; justify-content: space-between; gap: 8px; padding: 8px 14px; border-bottom: 1px solid var(--line); font: 600 .75rem var(--mono); color: var(--muted); }
pre { margin: 0; padding: 18px; overflow-x: auto; background: var(--bg-2); font-size: .84rem; line-height: 1.65; color: var(--text); tab-size: 2; }
.code-card pre { background: transparent; max-height: 460px; }
.panel[hidden] { display: none; }
.tok-c { color: var(--muted); } .tok-k { color: var(--accent-2); } .tok-s { color: var(--accent); } .tok-f { color: var(--accent-3); }

/* comparison */
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); }
table { width: 100%; border-collapse: collapse; font-size: .93rem; }
th, td { text-align: left; padding: 12px 14px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font: 700 .75rem var(--mono); letter-spacing: .06em; text-transform: uppercase; color: var(--muted); background: var(--bg-2); }
tr:last-child td { border-bottom: 0; }
td.yes { color: var(--good); } td.no { color: var(--bad); }
.cmp td:first-child { color: var(--text-2); font-weight: 600; }
.cmp td:last-child { background: color-mix(in srgb, var(--accent) 6%, transparent); }

/* faq */
details { border: 1px solid var(--line); border-radius: var(--radius-sm); background: var(--surface); padding: 0 18px; margin-bottom: 10px; }
summary { cursor: pointer; padding: 16px 0; font-weight: 650; list-style: none; display: flex; justify-content: space-between; gap: 12px; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; color: var(--accent); font-weight: 800; }
details[open] summary::after { content: "–"; }
details > div { padding: 0 0 16px; color: var(--text-2); }
.honest { border-color: color-mix(in srgb, var(--warn) 45%, var(--line)); }

/* cta band */
.cta-band { text-align: center; border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 56px 20px;
  background: radial-gradient(600px 220px at 50% 0, color-mix(in srgb, var(--accent-2) 20%, transparent), transparent), var(--surface); }

/* pricing */
.toggle { display: inline-flex; border: 1px solid var(--line); border-radius: 999px; padding: 4px; background: var(--surface); gap: 2px; }
.toggle button { border: 0; background: none; color: var(--text-2); padding: 8px 16px; border-radius: 999px; cursor: pointer; font: 650 .88rem var(--sans); }
.toggle button[aria-pressed="true"] { background: var(--surface-2); color: var(--text); box-shadow: inset 0 0 0 1px var(--line-2); }
.toggles { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; margin-bottom: 34px; }
.plan { display: flex; flex-direction: column; gap: 10px; }
.plan.featured { border-color: color-mix(in srgb, var(--accent) 55%, var(--line)); box-shadow: 0 0 0 1px color-mix(in srgb, var(--accent) 30%, transparent), var(--shadow); }
.plan .price { font: 800 2.1rem var(--sans); letter-spacing: -.03em; font-variant-numeric: tabular-nums; }
.plan .price small { font-size: .9rem; color: var(--muted); font-weight: 600; }
.plan ul { list-style: none; padding: 0; margin: 6px 0 14px; color: var(--text-2); font-size: .93rem; flex: 1; }
.plan li { padding: 5px 0; border-bottom: 1px dashed var(--line); }
.plan li::before { content: "→ "; color: var(--accent); }

/* docs */
.docs-layout { display: grid; gap: 30px; grid-template-columns: 1fr; padding: 34px 0 80px; }
@media (min-width: 960px) { .docs-layout { grid-template-columns: 240px minmax(0, 1fr); } }
.docs-nav { position: sticky; top: 84px; align-self: start; font-size: .92rem; }
@media (max-width: 959px) { .docs-nav { position: static; } }
.docs-nav h4 { font: 700 .72rem var(--mono); text-transform: uppercase; letter-spacing: .1em; color: var(--muted); margin: 18px 0 6px; }
.docs-nav a { display: block; color: var(--text-2); padding: 4px 10px; border-left: 2px solid var(--line); }
.docs-nav a:hover, .docs-nav a.active { color: var(--text); border-color: var(--accent); text-decoration: none; }
.doc { max-width: 820px; min-width: 0; }
.doc section { padding: 18px 0 30px; border-bottom: 1px solid var(--line); scroll-margin-top: 80px; }
.doc h2 { font-size: 1.7rem; margin-top: 10px; }
.doc h3 { margin-top: 22px; }
.doc pre { border: 1px solid var(--line); border-radius: var(--radius-sm); margin: 10px 0 18px; }
.doc ul, .doc ol { padding-left: 22px; color: var(--text-2); }
.doc li { margin: 4px 0; }
.callout { border: 1px solid var(--line); border-left: 3px solid var(--accent); background: var(--surface); padding: 12px 16px; border-radius: var(--radius-sm); margin: 14px 0; color: var(--text-2); }
.callout.warn { border-left-color: var(--warn); }

/* auth */
.auth-wrap { display: grid; place-items: center; padding: 60px 16px; }
.auth-card { width: 100%; max-width: 420px; }
.auth-card h1 { font-size: 1.8rem; }
.form-msg { min-height: 1.4em; font-size: .9rem; margin: 6px 0 10px; }
.form-msg.err { color: var(--bad); } .form-msg.ok { color: var(--good); }

/* dashboard / admin */
/* .dash spacing: see below (keeps .wrap side padding) */
.dash-head { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; margin-bottom: 22px; }
.dash-head h1 { font-size: 1.9rem; margin: 0; }
.dash-tabs { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: var(--s4); }
.key-box { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; background: var(--bg-2); border: 1px dashed var(--accent);
  border-radius: var(--radius-sm); padding: 12px 14px; font: 700 1.02rem var(--mono); word-break: break-all; }
.key-box code { background: none; border: 0; padding: 0; flex: 1 1 260px; }
.notice { border: 1px solid color-mix(in srgb, var(--warn) 50%, var(--line)); background: color-mix(in srgb, var(--warn) 8%, var(--surface));
  border-radius: var(--radius); padding: 16px 18px; margin-bottom: var(--s4); }
.lic { border-top: 1px solid var(--line); padding-top: 14px; margin-top: 14px; }
.lic-top { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; align-items: center; }
.kv { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 10px; margin: 12px 0; }
.kv div { background: var(--bg-2); border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 8px 12px; min-width: 0; }
.kv b { display: block; font: 700 .68rem var(--mono); color: var(--muted); text-transform: uppercase; letter-spacing: .08em; }
.kv span { font-weight: 650; overflow-wrap: anywhere; }
.actions { display: flex; gap: 8px; flex-wrap: wrap; }
.chart { position: relative; }
.chart svg { display: block; width: 100%; height: auto; overflow: visible; }
.chart .axis text { fill: var(--muted); font: 11px var(--sans); }
.chart .grid-line { stroke: var(--line); stroke-width: 1; }
.chart .hit { fill: transparent; cursor: crosshair; }
.chart-tip { position: absolute; pointer-events: none; background: var(--surface-2); border: 1px solid var(--line-2); border-radius: var(--radius-sm);
  padding: 8px 10px; font-size: .78rem; box-shadow: var(--shadow); white-space: nowrap; z-index: 5; color: var(--text); }
.chart-tip .row-t { display: flex; align-items: center; gap: 6px; }
.chart-tip i { width: 8px; height: 8px; border-radius: 2px; display: inline-block; }
.legend { display: flex; flex-wrap: wrap; gap: 4px 14px; font-size: .8rem; color: var(--text-2); margin: 6px 0 10px; }
.legend i { display: inline-block; width: 10px; height: 10px; border-radius: 2px; margin-right: 6px; vertical-align: -1px; }
.modal-bg { position: fixed; inset: 0; background: rgba(3, 6, 12, .7); display: grid; place-items: center; z-index: 100; padding: 16px; }
.modal { width: 100%; max-width: 520px; max-height: 90vh; overflow: auto; }
.qr { display: block; width: 100%; max-width: 280px; margin: 10px auto; border-radius: var(--radius); background: #fff; padding: 6px; }
.empty { color: var(--muted); padding: 18px; text-align: center; border: 1px dashed var(--line); border-radius: var(--radius-sm); }
.toast { position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%); background: var(--surface-2); border: 1px solid var(--line-2);
  padding: 10px 16px; border-radius: var(--radius-sm); z-index: 200; box-shadow: var(--shadow); font-size: .9rem; max-width: calc(100% - 32px); }
.small { font-size: .85rem; }
td .btn { margin: 2px 4px 2px 0; }

/* footer */
.site-footer { border-top: 1px solid var(--line); padding: 34px 0; color: var(--muted); font-size: .9rem; background: var(--bg-2); }
.footer-grid { display: flex; flex-wrap: wrap; gap: 20px 40px; justify-content: space-between; }
.footer-grid nav { display: flex; gap: 16px; flex-wrap: wrap; }
.footer-grid a { color: var(--text-2); }

@media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; } }

/* ---------- brand mark (inline SVG) ---------- */
:root { --brand-a: #FF7A59; --brand-b: #5B8CFF; --brand-wall: #64748B; }
@media (prefers-color-scheme: light) { :root:not([data-theme="dark"]) { --brand-a: #E2553A; --brand-b: #2F6BEB; --brand-wall: #94A3B8; } }
:root[data-theme="light"] { --brand-a: #E2553A; --brand-b: #2F6BEB; --brand-wall: #94A3B8; }
.bm-a { fill: var(--brand-a); } .bm-b { fill: var(--brand-b); } .bm-wall { fill: var(--brand-wall); }
.bm-stop-a { stop-color: var(--brand-a); } .bm-stop-b { stop-color: var(--brand-b); }
.brand-word { color: var(--text); display: block; }
.brand-mark { display: block; flex: none; }
.brand { gap: 9px; }
.cta-band .hero-cta { justify-content: center; }
.eyebrow .brand-mark { margin-right: 2px; }
.eyebrow:has(.brand-mark)::before { display: none; }

/* ---------- brand page ---------- */
.doc-wide h2 { margin-top: 48px; }
.brand-stage { display: grid; place-items: center; min-height: 220px; padding: 30px; }
.brand-stage img { width: min(320px, 100%); height: auto; }
.brand-stage-dark { background: #070A12; border-color: #1f2a3e; }
.brand-stage-light { background: #f6f8fb; border-color: #dde3ee; }
.mark-anatomy text, .brand-stage text { fill: #a7b2c6; font: 600 5px var(--mono); }
.anno path { stroke: #6f7b91; stroke-width: .4; stroke-dasharray: 1.5 1.5; fill: none; }
.clear-box { fill: none; stroke: #FF7A59; stroke-width: .6; stroke-dasharray: 2 2; }
.clear-inner { fill: none; stroke: #2a3850; stroke-width: .4; }
.size-row { display: flex; align-items: end; gap: var(--s4); flex-wrap: wrap; margin: 10px 0 14px; color: var(--muted); font: 600 .75rem var(--mono); }
.size-row figure { margin: 0; display: grid; justify-items: center; gap: 6px; }
.swatch-card { display: grid; gap: 8px; }
.swatch-pair { display: flex; gap: 2px; height: 56px; border-radius: var(--radius-sm); overflow: hidden; border: 1px solid var(--line); }
.swatch { flex: 1; }
.sw-coral-d { background: #FF7A59; } .sw-coral-l { background: #E2553A; }
.sw-azure-d { background: #5B8CFF; } .sw-azure-l { background: #2F6BEB; }
.sw-lilac-d { background: #B49BFF; } .sw-lilac-l { background: #7C5CE0; }
.sw-wall-d { background: #64748B; } .sw-wall-l { background: #94A3B8; }
.sw-ink-d { background: #EEF2FA; } .sw-ink-l { background: #0B1220; }
.sw-night-d { background: #070A12; } .sw-night-l { background: #F7F8FC; }
.type-sans { font: 700 1.5rem var(--sans); margin: 8px 0; }
.type-mono { font-size: 1.2rem; margin: 8px 0; }
.dd-stage { display: grid; place-items: center; height: 110px; background: #070A12; border-radius: var(--radius-sm); margin-bottom: 10px; }
.dd-rotate { transform: rotate(35deg); }
.dd-stretch { transform: scaleX(1.6); }
.dd-recolor { filter: hue-rotate(140deg) drop-shadow(0 0 8px #ff6b6b); }
#word-demo { color: var(--text); margin-top: 10px; }
.dash-section { margin-top: 18px; }
.brand-slot { display: flex; align-items: center; gap: 10px; margin-bottom: var(--s4); color: var(--text); }

/* ---------- responsive tables: cards on small screens ---------- */
@media (max-width: 720px) {
  .rt { border: 0; background: transparent; overflow: visible; }
  .rt table, .rt tbody, .rt tr, .rt td { display: block; width: 100%; }
  .rt thead { display: none; }
  .rt tr { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 8px 0; margin-bottom: 10px; }
  .rt td { border: 0; padding: 5px 14px; display: flex; gap: 12px; justify-content: space-between; align-items: center; text-align: right; min-width: 0; overflow-wrap: anywhere; }
  .rt td::before { content: attr(data-label); color: var(--muted); font: 700 .68rem var(--mono); text-transform: uppercase; letter-spacing: .06em; text-align: left; flex: none; max-width: 45%; }
  .rt td[data-label=""]::before { display: none; }
  .rt td:empty { display: none; }
  .rt td .btn { margin: 2px 0 2px 6px; }
  .dash-head h1 { font-size: 1.5rem; }
  .card { padding: 16px; }
  section { padding: 56px 0; }
  .modal-bg { align-items: end; padding: 0; }
  .modal { max-height: 92vh; border-radius: var(--radius-lg) 16px 0 0; }
}
.notifs { display: grid; gap: 8px; margin-bottom: var(--s4); }
.notif { display: flex; gap: 10px; align-items: center; justify-content: space-between; flex-wrap: wrap; border: 1px solid var(--line); border-left: 3px solid var(--accent-3);
  background: var(--surface); border-radius: var(--radius-sm); padding: 10px 14px; font-size: .92rem; }
.notif.warn { border-left-color: var(--warn); } .notif.bad { border-left-color: var(--bad); }
.kpis { display: grid; gap: 12px; grid-template-columns: repeat(auto-fit, minmax(min(100%, 150px), 1fr)); }
.kpi .stat-value { font-size: 1.55rem; }
.kpi .sub { color: var(--muted); font-size: .8rem; }
.readonly-banner { border: 1px dashed var(--warn); color: var(--warn); border-radius: var(--radius-sm); padding: 8px 12px; font: 700 .8rem var(--mono); margin-bottom: 12px; }

.filters { display: flex; flex-wrap: wrap; gap: 10px; align-items: end; margin-bottom: 14px; }
.filters > * { flex: 1 1 150px; }
.filters > .btn { flex: 0 0 auto; }

/* ---------- invoice / print ---------- */
.invoice { max-width: 820px; margin: 30px auto; background: #fff; color: #0c1220; border-radius: var(--radius); padding: 36px; box-shadow: var(--shadow); }
.invoice table th { background: #f3f6fb; color: #3e4a60; }
.invoice td, .invoice th { border-color: #dde3ee; }
.invoice .muted { color: #6a768c; }
.invoice-head { display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap; margin-bottom: 26px; }
.invoice .brand-word { color: #0c1220; }
.invoice .total { font: 800 1.4rem var(--sans); text-align: right; margin-top: 14px; }
@media print {
  .site-header, .site-footer, .no-print { display: none !important; }
  body { background: #fff; }
  .invoice { box-shadow: none; margin: 0; padding: 0; max-width: none; }
}
.modal-wide { max-width: 980px; }
input[type="checkbox"] { width: auto; height: auto; accent-color: var(--accent); }
.row-inline { display: flex; align-items: center; gap: 8px; margin: 6px 0 12px; }
.modal h4 { margin: 18px 0 8px; font-size: .95rem; }
.dash { padding-top: 30px; padding-bottom: 80px; }
.card h2 { font-size: 1.35rem; }
.brand { flex: none; }
.mobile-only { display: none; }
@media (max-width: 860px) { .nav-links.open .mobile-only { display: block; } }
@media (max-width: 480px) { #nav-cta { display: none; } .nav { gap: 10px; } }
#plans { grid-template-columns: repeat(auto-fit, minmax(min(100%, 300px), 1fr)); }
.plan .price { font-size: 1.8rem; }

/* ---------- landing: positioning sections ---------- */
.proto-line { font-size: .78rem; line-height: 1.7; color: var(--muted); max-width: 620px; margin: 0 0 4px; overflow-wrap: anywhere; }
.stats-note { margin-top: 10px; }
.measures { display: grid; gap: 12px; grid-template-columns: repeat(auto-fit, minmax(min(100%, 210px), 1fr)); margin: 28px 0 10px; }
.measure { border: 1px solid var(--line); border-radius: var(--radius); padding: 16px 18px; background: var(--surface); display: grid; gap: 4px; justify-items: start; }
.measure-v { font: 800 1.8rem var(--sans); letter-spacing: -.03em; font-variant-numeric: tabular-nums; }
.measure-l { color: var(--text-2); font-size: .9rem; }
.usecase { display: flex; flex-direction: column; gap: 2px; }
.usecase p { color: var(--text-2); font-size: .92rem; margin: 0 0 6px; }
.usecase pre { margin-top: auto; border: 1px solid var(--line); border-radius: var(--radius-sm); font-size: .76rem; padding: 12px; }
.uc-label { font: 700 .68rem var(--mono) !important; letter-spacing: .1em; text-transform: uppercase; color: var(--accent) !important; margin: 8px 0 2px !important; }
.enterprise { display: grid; gap: 28px; grid-template-columns: 1fr; padding: 32px;
  background: radial-gradient(700px 260px at 0 0, color-mix(in srgb, var(--accent-2) 14%, transparent), transparent), var(--surface); }
@media (min-width: 960px) { .enterprise { grid-template-columns: 1fr 1.2fr; } }
.ent-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; grid-template-columns: repeat(auto-fit, minmax(min(100%, 240px), 1fr)); }
.ent-list li { border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 12px 14px; background: var(--bg-2); display: grid; gap: 4px; }
.ent-list li span { color: var(--text-2); font-size: .88rem; }
table.proto td:nth-child(3) { white-space: nowrap; }
.feat-table td:not(:first-child), .feat-table th:not(:first-child) { text-align: center; }


/* =====================================================================
   Layout system v2: header sheet, segmented tabs / sidebar shell,
   page header, form grid, touch sizes.
   ===================================================================== */
.icon-btn { flex: none; }
.icon-btn svg { width: 18px; height: 18px; }
.menu-btn { display: none; font-size: 1.1rem; }
.nav-right { gap: var(--s2); }
@media (max-width: 860px) {
  .menu-btn { display: inline-flex; }
  .nav-right .btn-ghost { display: none; }
  .nav-links { display: none; }
  .nav-links.open {
    display: flex; flex-direction: column; gap: 0; position: fixed; z-index: 60; left: 0; right: 0; top: var(--header-h); bottom: 0;
    margin: 0; padding: var(--s3) var(--s4) var(--s6); background: var(--bg); border-top: 1px solid var(--line); overflow-y: auto;
  }
  .nav-links.open a { display: flex; align-items: center; min-height: 52px; padding: 0 var(--s4); border-radius: var(--radius-sm);
    font-size: 1.05rem; font-weight: 600; color: var(--text); border-left: 3px solid transparent; }
  .nav-links.open a + a { margin-top: var(--s1); }
  .nav-links.open a.active { background: var(--surface-2); border-left-color: var(--accent); }
  .nav-links.open a.mobile-only { display: flex; }
  .nav-links.open #m-cta { margin-top: var(--s4); justify-content: center; border: 0; background: var(--grad); color: var(--on-grad); }
  html.menu-open, html.menu-open body { overflow: hidden; }
}
@media (max-width: 480px) { #nav-cta { display: none; } .nav { gap: var(--s2); } }

/* page header (dashboard/admin) */
.page-head { display: flex; align-items: center; justify-content: space-between; gap: var(--s3) var(--s4); flex-wrap: wrap; margin-bottom: var(--s5); }
.page-title { display: flex; align-items: center; gap: var(--s3); min-width: 0; }
.page-title h1 { font-size: 1.75rem; margin: 0; line-height: 1.15; }
.page-title .sub { color: var(--muted); font-size: .875rem; overflow-wrap: anywhere; }
.page-actions { display: flex; gap: var(--s2); flex-wrap: wrap; }
@media (max-width: 640px) {
  .page-head { flex-direction: column; flex-wrap: nowrap; align-items: stretch; }
  .page-title h1 { font-size: 1.5rem; }
  .page-actions { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); align-content: start; }
  .page-actions .btn { width: 100%; }
}

/* shell: segmented scrollable tab bar on mobile, sidebar on >=768px */
.shell { display: block; }
.seg-nav { position: sticky; top: var(--header-h); z-index: 20; display: flex; gap: var(--s1); overflow-x: auto; overscroll-behavior-x: contain;
  scroll-snap-type: x proximity; scrollbar-width: none; -webkit-overflow-scrolling: touch;
  margin: 0 calc(-1 * var(--s4)) var(--s4); padding: var(--s2) var(--s4);
  background: color-mix(in srgb, var(--bg) 92%, transparent); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
  -webkit-mask-image: linear-gradient(to right, transparent 0, #000 var(--s4), #000 calc(100% - var(--s5)), transparent 100%);
  mask-image: linear-gradient(to right, transparent 0, #000 var(--s4), #000 calc(100% - var(--s5)), transparent 100%); }
.seg-nav::-webkit-scrollbar { display: none; }
.seg-tab { flex: none; scroll-snap-align: center; display: inline-flex; align-items: center; gap: var(--s2); height: var(--btn-h);
  padding: 0 var(--s4); border-radius: var(--radius-sm); border: 1px solid transparent; background: none; color: var(--text-2);
  font: 600 .9rem var(--sans); white-space: nowrap; cursor: pointer; }
.seg-tab:hover { color: var(--text); background: var(--surface); }
.seg-tab[aria-selected="true"] { color: var(--text); background: var(--surface-2); border-color: var(--line-2); box-shadow: inset 0 -2px 0 var(--accent); }
.seg-tab .count { font: 700 .7rem var(--mono); color: var(--muted); }
.shell-body { min-width: 0; }
@media (min-width: 768px) {
  .shell { display: grid; grid-template-columns: 200px minmax(0, 1fr); gap: var(--s5); align-items: start; }
  .seg-nav { flex-direction: column; top: calc(var(--header-h) + var(--s4)); margin: 0; padding: var(--s2); overflow: visible;
    border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); -webkit-mask-image: none; mask-image: none; backdrop-filter: none; }
  .seg-tab { width: 100%; justify-content: flex-start; }
  .seg-tab[aria-selected="true"] { box-shadow: inset 3px 0 0 var(--accent); }
}
@media (min-width: 720px) and (max-width: 767px) { .seg-nav { margin-left: -28px; margin-right: -28px; padding-left: 28px; padding-right: 28px; } }

/* consistent 2-column form grid with unit suffixes */
.form-grid { display: grid; grid-template-columns: 7.5rem minmax(0, 1fr); gap: var(--s2) var(--s3); align-items: center; }
.form-grid > label { margin: 0; font: 700 .72rem var(--mono); letter-spacing: .06em; text-transform: uppercase; color: var(--muted); }
.input-unit { position: relative; display: flex; align-items: center; min-width: 0; }
.input-unit input { text-align: right; padding-right: 4.25rem; font-variant-numeric: tabular-nums; }
.input-unit .unit { position: absolute; right: var(--s3); pointer-events: none; font: 600 .75rem var(--mono); color: var(--muted); }
.input-unit input:disabled { opacity: .55; cursor: not-allowed; }
.plan-cards { display: grid; gap: var(--s4); grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr)); margin-bottom: var(--s4); }
.plan-cards .card h3 { display: flex; justify-content: space-between; align-items: center; margin-bottom: var(--s3); text-transform: capitalize; }
@media (max-width: 380px) { .form-grid { grid-template-columns: 1fr; gap: var(--s1); } .form-grid > label:not(:first-child) { margin-top: var(--s2); } }

/* touch devices: 44px targets */
@media (pointer: coarse) {
  :root { --btn-h: 44px; }
}
.app-id { border: 1px solid var(--line); border-radius: var(--radius); padding: var(--s4); margin: var(--s3) 0 var(--s4); background: var(--bg-2); display: grid; gap: var(--s3); }
.app-id-row { display: flex; justify-content: space-between; align-items: center; gap: var(--s3); flex-wrap: wrap; }
.app-id-code { font: 800 1.15rem var(--mono); background: none !important; border: 0 !important; padding: 0 !important; overflow-wrap: anywhere; }
.small-key { font-size: .82rem; }
.rooms-head { display: flex; justify-content: space-between; align-items: center; gap: var(--s4); flex-wrap: wrap; margin-bottom: var(--s3); }
.sparkline { max-width: 100%; height: auto; }
.room-code { font: 800 1rem var(--mono); letter-spacing: .12em; white-space: nowrap; }
.code-form { display: flex; gap: var(--s3); max-width: 520px; margin: 0 auto; }
.code-form input { height: 48px; }
.code-input { font: 800 1.6rem var(--mono); letter-spacing: .3em; text-align: center; text-transform: uppercase; }
.room-card { margin-top: var(--s5); display: grid; gap: var(--s3); }
.room-code.big { font-size: 2.2rem; letter-spacing: .18em; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.room-meta h2 { margin: 0 0 var(--s1); }
.use-grid { display: grid; gap: var(--s3); grid-template-columns: repeat(auto-fit, minmax(min(100%, 260px), 1fr)); }
.use-grid .card { padding: var(--s4); }
.cmd { display: grid; gap: var(--s1); min-width: 0; }
.cmd pre { border: 1px solid var(--line); border-radius: var(--radius-sm); padding: var(--s3); font-size: .8rem; order: 2; }
.cmd .btn { justify-self: end; order: 1; }
@media (max-width: 480px) { .code-form { flex-direction: column; } .code-input { font-size: 1.3rem; } }
.codes { display: grid; gap: var(--s5); grid-template-columns: 1fr; padding: var(--s6) var(--s5); }
@media (min-width: 960px) { .codes { grid-template-columns: 1fr 1fr; align-items: center; } }
.code-steps { display: grid; gap: var(--s3); min-width: 0; }
.code-steps pre { border: 1px solid var(--line); border-radius: var(--radius-sm); font-size: .8rem; }
.code-demo { font: 800 clamp(2.4rem, 8vw, 3.6rem) var(--mono); letter-spacing: .2em; text-align: center; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.nat-title { margin-top: var(--s6); }
table.nat td:not(:first-child), table.cmp4 td:not(:first-child) { white-space: normal; }
.room-card { grid-template-columns: minmax(0, 1fr); }
.room-card > *, .use-grid > * { min-width: 0; }
.room-meta { min-width: 0; overflow-wrap: anywhere; }
.mail-panel { margin-top: var(--s4); }