/* RefeGo — marketing site. Tokens from GUI/Design.md: near-black canvas, white pills, hairlines, mono eyebrows. */
:root {
  --canvas: #0a0a0a;
  --canvas-soft: #1a1c20;
  --canvas-card: #141414;
  --canvas-mid: #363a3f;
  --hairline: #212327;
  --ink: #ffffff;
  --body: #dadbdf;
  --mute: #7d8187;
  --sunset: #ff7a17;
  --sunset-soft: #ffc285;
  --dusk: #7c3aed;
  --twilight: #c4b5fd;
  --breeze: #a0c3ec;
  --midnight: #0d1726;
  --ok: #34d399;
  --translucent: rgba(255, 255, 255, 0.25);
  --font-sans: "Inter", system-ui, -apple-system, sans-serif;
  --font-mono: "Geist Mono", ui-monospace, "SF Mono", Menlo, monospace;
  --max: 1200px;
  color-scheme: dark;
}
* { box-sizing: border-box; min-width: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body { margin: 0; background: var(--canvas); color: var(--ink); font: 400 16px/1.55 var(--font-sans); -webkit-font-smoothing: antialiased; }
a { color: var(--ink); }
img, svg { max-width: 100%; }
::selection { background: rgba(255, 122, 23, .35); }
:focus-visible { outline: 2px solid var(--sunset); outline-offset: 3px; }
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 48px; }
.eyebrow { font: 400 13px/20px var(--font-mono); letter-spacing: 1.4px; text-transform: uppercase; color: var(--ink); margin: 0 0 20px; }
.eyebrow.mute { color: var(--mute); }
.mono { font-family: var(--font-mono); }
.skip { position: absolute; left: -999px; top: 8px; background: #fff; color: #000; padding: 8px 12px; border-radius: 8px; z-index: 100; }
.skip:focus { left: 8px; }

/* buttons: the pill is the brand */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; height: 40px; padding: 0 20px; border-radius: 9999px; border: 1px solid var(--translucent); background: transparent; color: var(--ink); font: 400 14px/1 var(--font-sans); text-decoration: none; cursor: pointer; white-space: nowrap; transition: background .15s, border-color .15s; }
.btn:hover { border-color: rgba(255,255,255,.6); background: rgba(255,255,255,.04); }
.btn-primary { background: #fff; color: #0a0a0a; border-color: #fff; }
.btn-primary:hover { background: #e9e9e6; border-color: #e9e9e6; }
.btn-sm { height: 34px; padding: 0 16px; }

/* nav */
.nav { position: sticky; top: 0; z-index: 50; background: rgba(10,10,10,.86); backdrop-filter: saturate(140%) blur(12px); border-bottom: 1px solid var(--hairline); }
.nav .wrap { display: flex; align-items: center; justify-content: space-between; height: 64px; gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; font-size: 19px; letter-spacing: -.4px; }
.nav-links { display: flex; gap: 4px; list-style: none; margin: 0; padding: 0; }
.nav-links a { display: inline-flex; padding: 8px 12px; font-size: 14px; color: var(--body); text-decoration: none; border-radius: 9999px; }
.nav-links a:hover { color: #fff; background: var(--canvas-soft); }
.nav-right { display: flex; align-items: center; gap: 8px; }
.lang { font: 400 12px var(--font-mono); letter-spacing: 1px; color: var(--mute); text-decoration: none; padding: 8px; }
.lang:hover { color: #fff; }
.menu-btn { display: none; }

/* hero */
.hero { position: relative; overflow: hidden; border-bottom: 1px solid var(--hairline); }
.hero::before { content: ""; position: absolute; inset: -20% -10% auto auto; width: 70%; height: 120%; background: radial-gradient(closest-side, rgba(124,58,237,.22), transparent 70%); pointer-events: none; }
.hero::after { content: ""; position: absolute; right: -10%; bottom: -40%; width: 50%; height: 80%; background: radial-gradient(closest-side, rgba(255,122,23,.16), transparent 70%); pointer-events: none; }
.hero .wrap { position: relative; padding-top: 120px; padding-bottom: 96px; }
.hero h1 { font-weight: 400; font-size: clamp(48px, 8.4vw, 96px); line-height: .98; letter-spacing: -2.4px; margin: 0 0 32px; max-width: 980px; }
.hero h1 em { font-style: normal; color: var(--mute); }
.lead { font-size: 19px; line-height: 1.55; color: var(--body); max-width: 640px; margin: 0 0 40px; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; }
.stats { display: grid; grid-template-columns: repeat(4, 1fr); margin-top: 88px; border-top: 1px solid var(--hairline); }
.stat { padding: 24px 24px 0 0; }
.stat + .stat { padding-left: 24px; border-left: 1px solid var(--hairline); }
.stat b { display: block; font-weight: 400; font-size: 32px; letter-spacing: -1px; line-height: 1.1; }
.stat span { font: 400 12px/18px var(--font-mono); letter-spacing: 1.2px; text-transform: uppercase; color: var(--mute); }

/* sections */
section.band { padding: 112px 0; border-bottom: 1px solid var(--hairline); }
.h2 { font-weight: 400; font-size: clamp(32px, 5vw, 52px); line-height: 1.02; letter-spacing: -1.4px; margin: 0 0 20px; max-width: 860px; }
.sub { font-size: 18px; color: var(--body); max-width: 680px; margin: 0 0 56px; }
.card { background: var(--canvas-card); border: 1px solid var(--hairline); border-radius: 8px; padding: 28px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.card h3 { font-weight: 400; font-size: 22px; letter-spacing: -.5px; line-height: 1.2; margin: 14px 0 10px; }
.card p { margin: 0; color: var(--body); font-size: 15px; }
.idx { font: 400 12px var(--font-mono); letter-spacing: 1.2px; color: var(--mute); }
.icon { width: 40px; height: 40px; border: 1px solid var(--hairline); border-radius: 8px; display: flex; align-items: center; justify-content: center; color: var(--body); }

/* product mock */
.mock { margin-top: 72px; border: 1px solid var(--hairline); border-radius: 10px; background: linear-gradient(180deg, #111 0%, #0c0c0c 100%); overflow: hidden; box-shadow: 0 40px 120px -40px rgba(124,58,237,.35); }
.mock-bar { display: flex; align-items: center; gap: 8px; height: 40px; padding: 0 16px; border-bottom: 1px solid var(--hairline); }
.mock-bar i { width: 10px; height: 10px; border-radius: 50%; background: var(--canvas-mid); }
.mock-bar span { margin-left: 12px; font: 400 12px var(--font-mono); color: var(--mute); }
.mock-body { display: grid; grid-template-columns: 200px 1fr; min-height: 420px; }
.mock-side { border-right: 1px solid var(--hairline); padding: 20px 12px; display: flex; flex-direction: column; gap: 4px; }
.mock-side div { padding: 9px 12px; border-radius: 8px; font-size: 13px; color: var(--body); }
.mock-side div.on { background: #fff; color: #0a0a0a; }
.mock-main { padding: 28px; display: grid; gap: 14px; align-content: start; }
.mock-kpis { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.mock-kpi { border: 1px solid var(--hairline); border-radius: 8px; padding: 16px; background: var(--canvas-card); }
.mock-kpi small { display: block; font: 400 10px/14px var(--font-mono); letter-spacing: 1px; text-transform: uppercase; color: var(--mute); margin-bottom: 10px; }
.mock-kpi b { font-weight: 400; font-size: 24px; letter-spacing: -.8px; }
.mock-kpi em { display: block; font: normal 400 11px var(--font-mono); color: var(--ok); margin-top: 6px; }
.mock-row { display: grid; grid-template-columns: 1.6fr 1fr; gap: 12px; }
.mock-chart { border: 1px solid var(--hairline); border-radius: 8px; padding: 16px; background: var(--canvas-card); height: 180px; display: flex; align-items: flex-end; gap: 5px; }
.mock-chart i { flex: 1; background: #fff; opacity: .85; border-radius: 2px 2px 0 0; }
.mock-chart i.s { background: var(--sunset); }
.mock-list { border: 1px solid var(--hairline); border-radius: 8px; background: var(--canvas-card); }
.mock-list div { display: flex; justify-content: space-between; align-items: center; padding: 11px 14px; border-bottom: 1px solid var(--hairline); font-size: 12px; color: var(--body); }
.mock-list div:last-child { border-bottom: 0; }
.pill { font: 400 10px var(--font-mono); letter-spacing: .6px; text-transform: uppercase; padding: 3px 8px; border-radius: 9999px; border: 1px solid var(--hairline); background: var(--canvas-soft); }
.pill.ok { color: var(--ok); } .pill.warn { color: var(--sunset); } .pill.dusk { color: var(--twilight); } .pill.info { color: var(--breeze); }

/* steps */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--hairline); }
.step { padding: 32px 28px 0 0; }
.step + .step { padding-left: 28px; border-left: 1px solid var(--hairline); }
.step h3 { font-weight: 400; font-size: 22px; letter-spacing: -.5px; margin: 16px 0 10px; }
.step p { color: var(--body); margin: 0; font-size: 15px; }

/* lifecycle */
.flow { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; margin: 8px 0 40px; }
.flow .arrow { color: var(--mute); font-family: var(--font-mono); }

/* features */
.feature-art { height: 120px; border-radius: 6px; border: 1px solid var(--hairline); margin-bottom: 8px; background: linear-gradient(135deg, var(--midnight) 0%, rgba(124,58,237,.55) 60%, rgba(255,122,23,.55) 120%); }

/* security list */
.checks { list-style: none; padding: 0; margin: 0; border-top: 1px solid var(--hairline); }
.checks li { display: grid; grid-template-columns: 220px 1fr; gap: 24px; padding: 20px 0; border-bottom: 1px solid var(--hairline); }
.checks li b { font-weight: 400; font: 400 13px var(--font-mono); letter-spacing: 1px; text-transform: uppercase; }
.checks li span { color: var(--body); }

/* pricing */
.tiers { width: 100%; border-collapse: collapse; }
.tiers th, .tiers td { text-align: left; padding: 16px 0; border-bottom: 1px solid var(--hairline); font-size: 16px; }
.tiers th { font: 400 12px var(--font-mono); letter-spacing: 1.2px; text-transform: uppercase; color: var(--mute); }
.tiers td:last-child, .tiers th:last-child { text-align: right; }
.price-card { background: #fff; color: #0a0a0a; border-radius: 8px; padding: 32px; }
.price-card .eyebrow { color: rgba(10,10,10,.55); }
.price-card .big { font-weight: 400; font-size: clamp(56px, 7vw, 80px); letter-spacing: -2.4px; line-height: 1; margin: 8px 0 4px; }
.price-card .share { font: 400 13px var(--font-mono); color: rgba(10,10,10,.6); }
.price-card input[type="range"] { width: 100%; margin: 28px 0 8px; accent-color: #0a0a0a; }
.price-card .vol { display: flex; justify-content: space-between; align-items: baseline; }
.price-card .vol b { font-weight: 400; font-size: 24px; letter-spacing: -.6px; }
.price-card .cmp { margin-top: 24px; padding-top: 20px; border-top: 1px solid rgba(10,10,10,.12); display: grid; gap: 8px; font-size: 14px; }
.price-card .cmp div { display: flex; justify-content: space-between; }
.price-card .btn { margin-top: 28px; background: #0a0a0a; color: #fff; border-color: #0a0a0a; width: 100%; }
.compare { width: 100%; border-collapse: collapse; margin-top: 48px; }
.compare th, .compare td { padding: 14px 16px; border-bottom: 1px solid var(--hairline); text-align: left; font-size: 15px; }
.compare th { font: 400 12px var(--font-mono); letter-spacing: 1.2px; text-transform: uppercase; color: var(--mute); background: var(--canvas-soft); }
.compare td.us { color: var(--ok); }
.note { font-size: 13px; color: var(--mute); margin-top: 12px; }

/* faq */
details { border-bottom: 1px solid var(--hairline); }
details:first-of-type { border-top: 1px solid var(--hairline); }
summary { list-style: none; cursor: pointer; padding: 22px 40px 22px 0; font-size: 19px; letter-spacing: -.3px; position: relative; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; position: absolute; right: 4px; top: 18px; font: 400 22px var(--font-mono); color: var(--mute); transition: transform .2s; }
details[open] summary::after { transform: rotate(45deg); }
details p { margin: 0 0 24px; color: var(--body); max-width: 800px; }

/* form */
.form { display: grid; gap: 18px; }
.form .row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form label span { display: block; font: 400 11px var(--font-mono); letter-spacing: 1.2px; text-transform: uppercase; color: var(--body); margin-bottom: 8px; }
.form input, .form select, .form textarea { width: 100%; background: var(--canvas-soft); color: #fff; border: 1px solid var(--hairline); border-radius: 8px; padding: 12px 16px; font: 400 16px/24px var(--font-sans); }
.form input:focus, .form select:focus, .form textarea:focus { outline: none; border-color: rgba(255,255,255,.45); }
.form .hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.form-status { font-size: 14px; min-height: 22px; }
.form-status.ok { color: var(--ok); }
.form-status.err { color: #f87171; }

/* cta & footer */
.cta { text-align: left; position: relative; overflow: hidden; }
.cta::before { content: ""; position: absolute; left: -10%; top: -60%; width: 60%; height: 160%; background: radial-gradient(closest-side, rgba(255,122,23,.14), transparent 70%); pointer-events: none; }
.cta .h2 { font-size: clamp(40px, 6vw, 72px); letter-spacing: -1.8px; }
footer { padding: 56px 0 48px; color: var(--body); font-size: 14px; }
footer .wrap { display: grid; grid-template-columns: 1.4fr repeat(3, 1fr); gap: 32px; }
footer h4 { font: 400 12px var(--font-mono); letter-spacing: 1.2px; text-transform: uppercase; color: var(--mute); margin: 0 0 14px; }
footer ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
footer a { color: var(--body); text-decoration: none; }
footer a:hover { color: #fff; }
.legal { border-top: 1px solid var(--hairline); margin-top: 48px; padding-top: 24px; color: var(--mute); font-size: 13px; }

/* reveal on scroll (progressive enhancement) */
.js .reveal { opacity: 0; transform: translateY(12px); transition: opacity .6s ease, transform .6s ease; }
.js .reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .js .reveal { opacity: 1; transform: none; transition: none; } html { scroll-behavior: auto; } }

@media (max-width: 1024px) {
  .wrap { padding: 0 32px; }
  .nav-links { display: none; }
  .grid-4, .mock-kpis { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .step:nth-child(3) { border-left: 0; padding-left: 0; }
  .step { padding-bottom: 32px; }
  footer .wrap { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 760px) {
  .wrap { padding: 0 16px; }
  .hero .wrap { padding-top: 72px; padding-bottom: 64px; }
  .hero h1 { letter-spacing: -1.4px; }
  .lead { font-size: 17px; }
  .stats { grid-template-columns: 1fr 1fr; margin-top: 56px; }
  .stat:nth-child(3) { border-left: 0; padding-left: 0; }
  .stat { padding-bottom: 20px; }
  section.band { padding: 72px 0; }
  .grid-2, .grid-3, .grid-4, .steps, .mock-row, .form .row { grid-template-columns: 1fr; }
  .step + .step { border-left: 0; padding-left: 0; border-top: 1px solid var(--hairline); }
  .mock-body { grid-template-columns: 1fr; }
  .mock-side { display: none; }
  .mock-kpis { grid-template-columns: 1fr 1fr; }
  .checks li { grid-template-columns: 1fr; gap: 6px; }
  .nav-right .btn:not(.btn-primary) { display: none; }
  .compare-wrap { overflow-x: auto; }
  .compare { min-width: 520px; }
  footer .wrap { grid-template-columns: 1fr; }
}