/* Revox Client website: brand tokens */

:root {
  --accent: #2E9BF0;
  --accent-bright: #5BC8F5;
  --accent-deep: #1874FF;
  --green: #35C759;
  --amber: #F5A524;
  --red: #F2557A;
  --orange: #F58A24;
  --bg: #0B0E13;
  --surface: #14181F;
  --surface-2: #1C212A;
  --border: #2C333F;
  --text: #EEF2F7;
  --text-muted: #98A2B3;
  --text-faint: #6B7484;
  --gradient: linear-gradient(135deg, #5BC8F5, #1874FF);
  --radius-s: 6px;
  --radius: 10px;
  --radius-l: 16px;
  --font: "Segoe UI", "Inter", system-ui, -apple-system, sans-serif;
  --mono: "JetBrains Mono", Consolas, monospace;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-bright); }

img, svg { max-width: 100%; }

.container { max-width: 1120px; margin: 0 auto; padding: 0 24px; }

/* ---------- Header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(11, 14, 19, 0.82);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.site-header .container {
  display: flex;
  align-items: center;
  gap: 28px;
  height: 64px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-weight: 700;
  font-size: 18px;
  letter-spacing: 0.08em;
}
.brand:hover { color: var(--text); }
.brand svg { width: 30px; height: 30px; }

.site-nav {
  display: flex;
  align-items: center;
  gap: 22px;
  margin-left: auto;
}
.site-nav a {
  color: var(--text-muted);
  font-size: 15px;
}
.site-nav a:hover, .site-nav a.active { color: var(--text); }

/* ---------- Buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  border-radius: var(--radius);
  padding: 13px 26px;
  font-size: 16px;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background-position 0.35s ease, box-shadow 0.25s ease, transform 0.15s ease, background 0.15s ease;
}

/* Blue gradient, white text, gradient slides on hover */
.btn-primary {
  background: linear-gradient(120deg, #5BC8F5, #2E9BF0 45%, #1874FF);
  background-size: 200% 100%;
  background-position: 0% 50%;
  color: #fff;
  box-shadow: 0 6px 20px -8px rgba(24, 116, 255, 0.7);
}
.btn-primary:hover {
  background-position: 100% 50%;
  color: #fff;
  box-shadow: 0 10px 26px -8px rgba(24, 116, 255, 0.85);
}
.btn-primary:active { transform: translateY(1px); }

.btn-secondary {
  background: var(--surface);
  border-color: var(--border);
  color: var(--text);
}
.btn-secondary:hover { background: var(--surface-2); color: var(--text); }
.btn-large { padding: 16px 34px; font-size: 18px; }
.btn-nav { padding: 8px 18px; font-size: 14px; }
.btn[disabled] { opacity: 0.5; cursor: not-allowed; }

/* ---------- Hero ---------- */

.hero {
  position: relative;
  padding: 88px 0 72px;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  inset: -40% -20% auto;
  height: 130%;
  background:
    radial-gradient(ellipse 55% 45% at 30% 30%, rgba(91, 200, 245, 0.16), transparent 70%),
    radial-gradient(ellipse 50% 45% at 75% 20%, rgba(24, 116, 255, 0.18), transparent 70%);
  pointer-events: none;
}
.hero .container { position: relative; text-align: center; }

.hero-logo { width: 96px; height: 96px; margin-bottom: 28px; }

.hero h1 {
  font-size: clamp(34px, 5.5vw, 56px);
  line-height: 1.12;
  letter-spacing: -0.01em;
  margin-bottom: 18px;
}
.hero h1 .grad {
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero .sub {
  color: var(--text-muted);
  font-size: 19px;
  max-width: 640px;
  margin: 0 auto 34px;
}
.hero-actions {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 14px;
}
.hero-meta {
  color: var(--text-faint);
  font-size: 13.5px;
  margin-bottom: 56px;
}
.hero-meta .mono { font-family: var(--mono); }

/* ---------- App mock-up ---------- */

.app-mock {
  max-width: 880px;
  margin: 0 auto;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-l);
  overflow: hidden;
  box-shadow:
    0 40px 90px -30px rgba(24, 116, 255, 0.35),
    0 20px 60px -20px rgba(0, 0, 0, 0.7);
  text-align: left;
  font-size: 12px;
}
.mock-titlebar {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--gradient);
  padding: 8px 14px;
  color: #fff;
  font-weight: 600;
  letter-spacing: 0.06em;
}
.mock-titlebar svg { width: 16px; height: 16px; }
.mock-titlebar .win-dots { margin-left: auto; display: flex; gap: 10px; opacity: 0.85; }
.mock-titlebar .win-dots span { width: 9px; height: 9px; border-radius: 50%; background: rgba(255,255,255,0.75); }

.mock-body { display: flex; min-height: 340px; }

.mock-rail {
  width: 52px;
  background: #10141b;
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  padding: 16px 0;
}
.mock-rail span {
  width: 30px; height: 30px;
  border-radius: 8px;
  background: var(--surface-2);
  display: flex; align-items: center; justify-content: center;
  color: var(--text-faint);
}
.mock-rail span.active { background: rgba(46, 155, 240, 0.18); color: var(--accent); }
.mock-rail svg { width: 16px; height: 16px; }

.mock-main { flex: 1; padding: 18px; display: flex; gap: 16px; min-width: 0; }
.mock-left { flex: 1.7; min-width: 0; }
.mock-right { flex: 1; min-width: 0; }

.mock-heading { color: var(--text-faint); font-size: 10px; text-transform: uppercase; letter-spacing: 0.12em; margin-bottom: 8px; }

.mock-hero-tile {
  position: relative;
  border-radius: var(--radius);
  height: 150px;
  background:
    linear-gradient(rgba(11,14,19,0.15), rgba(11,14,19,0.85)),
    repeating-conic-gradient(from 20deg, #1d3a5f 0 12%, #14263f 12% 25%, #274a78 25% 37%, #182f4d 37% 50%);
  border: 1px solid var(--border);
  margin-bottom: 14px;
  padding: 12px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
}
.mock-hero-tile .title { font-weight: 700; font-size: 14px; }
.mock-hero-tile .meta { color: var(--text-muted); font-size: 10.5px; margin-bottom: 8px; }
.mock-play {
  align-self: flex-start;
  background: var(--green);
  color: #06220e;
  font-weight: 700;
  border-radius: 8px;
  padding: 6px 22px;
  font-size: 12px;
  display: inline-flex; align-items: center; gap: 6px;
}
.mock-play svg { width: 10px; height: 10px; }

.mock-favs { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; }
.mock-fav {
  border-radius: var(--radius-s);
  border: 1px solid var(--border);
  background: var(--surface-2);
  height: 64px;
  padding: 7px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  position: relative;
  font-size: 10px;
  color: var(--text-muted);
  overflow: hidden;
}
.mock-fav::before {
  content: "";
  position: absolute; inset: 0 0 46%;
  background: linear-gradient(120deg, #22436b, #17293f);
}
.mock-fav i {
  position: absolute; top: 5px; right: 6px;
  width: 8px; height: 8px;
  background: var(--amber);
  clip-path: polygon(50% 0, 61% 35%, 98% 35%, 68% 57%, 79% 91%, 50% 70%, 21% 91%, 32% 57%, 2% 35%, 39% 35%);
}
.mock-fav b { position: relative; color: var(--text); font-size: 10px; font-weight: 600; }

.mock-session {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-s);
  padding: 8px 10px;
  margin-bottom: 8px;
}
.mock-session .thumb {
  width: 30px; height: 30px;
  border-radius: 6px;
  background: linear-gradient(135deg, #2b527f, #1a3050);
  flex-shrink: 0;
}
.mock-session .info { min-width: 0; flex: 1; }
.mock-session .info b { display: block; font-size: 11px; font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.mock-session .info small { color: var(--text-faint); font-size: 9.5px; font-family: var(--mono); }
.mock-session .join {
  background: rgba(53, 199, 89, 0.16);
  color: var(--green);
  border: 1px solid rgba(53, 199, 89, 0.35);
  border-radius: 6px;
  font-size: 9.5px;
  font-weight: 700;
  padding: 3px 9px;
  white-space: nowrap;
}

/* ---------- Sections ---------- */

section.block { padding: 72px 0; }
section.block.alt { background: #0d1118; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }

.block h2 {
  font-size: clamp(26px, 3.4vw, 36px);
  letter-spacing: -0.01em;
  margin-bottom: 10px;
}
.block .lead {
  color: var(--text-muted);
  font-size: 17px;
  max-width: 720px;
  margin-bottom: 40px;
}
.center { text-align: center; }
.center .lead { margin-left: auto; margin-right: auto; }

.eyebrow {
  display: inline-block;
  color: var(--accent);
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  margin-bottom: 12px;
}

/* Boundaries panel */
.boundaries {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 14px;
}
.boundary {
  display: flex;
  gap: 14px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
}
.boundary .check {
  flex-shrink: 0;
  width: 26px; height: 26px;
  border-radius: 50%;
  background: rgba(53, 199, 89, 0.15);
  color: var(--green);
  display: flex; align-items: center; justify-content: center;
  font-weight: 700;
  margin-top: 2px;
}
.boundary p { color: var(--text-muted); font-size: 14.5px; }
.boundary b { color: var(--text); display: block; margin-bottom: 2px; font-size: 15.5px; }

/* Feature cards */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 16px;
}
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
}
.card .icon {
  width: 42px; height: 42px;
  border-radius: var(--radius);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 16px;
  background: rgba(46, 155, 240, 0.14);
  color: var(--accent);
}
.card .icon.green { background: rgba(53, 199, 89, 0.14); color: var(--green); }
.card .icon.amber { background: rgba(245, 165, 36, 0.14); color: var(--amber); }
.card .icon.orange { background: rgba(245, 138, 36, 0.14); color: var(--orange); }
.card .icon.red { background: rgba(242, 85, 122, 0.14); color: var(--red); }
.card .icon svg { width: 22px; height: 22px; }
.card h3 { font-size: 17px; margin-bottom: 8px; }
.card p { color: var(--text-muted); font-size: 14.5px; }

/* Tables */
.table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: var(--radius); }
table { width: 100%; border-collapse: collapse; background: var(--surface); font-size: 15px; }
th, td { text-align: left; padding: 14px 18px; border-bottom: 1px solid var(--border); vertical-align: top; }
tr:last-child td { border-bottom: 0; }
th { background: var(--surface-2); font-size: 13px; text-transform: uppercase; letter-spacing: 0.08em; color: var(--text-muted); }
td { color: var(--text-muted); }
td:first-child { color: var(--text); font-weight: 600; }
td .yes { color: var(--green); font-weight: 700; }
td .no { color: var(--red); font-weight: 700; }
td .maybe { color: var(--amber); font-weight: 700; }
.mono { font-family: var(--mono); }
.table-note { margin-top: 18px; color: var(--text-faint); font-size: 14px; }

/* FAQ */
.faq-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 12px;
  overflow: hidden;
}
.faq-item summary {
  cursor: pointer;
  padding: 18px 22px;
  font-weight: 600;
  font-size: 16px;
  list-style: none;
  display: flex;
  justify-content: space-between;
  gap: 16px;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; color: var(--text-faint); font-size: 20px; line-height: 1; }
.faq-item[open] summary::after { content: "–"; }
.faq-item .answer { padding: 0 22px 18px; color: var(--text-muted); font-size: 15px; }

/* ---------- Download page ---------- */

.download-panel {
  max-width: 620px;
  margin: 0 auto;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-l);
  padding: 40px;
  text-align: center;
}
.download-panel .hero-logo { width: 72px; height: 72px; margin-bottom: 20px; }
.download-title { font-size: 32px; margin-bottom: 8px; }
.download-sub { color: var(--text-muted); }
.download-releases { margin-top: 36px; font-size: 14px; color: var(--text-faint); }
.dim { color: var(--text-faint); }
.download-row {
  display: flex;
  gap: 12px;
  justify-content: center;
  align-items: stretch;
  flex-wrap: wrap;
  margin: 28px 0 10px;
}
.version-select {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font: inherit;
  font-size: 15px;
  padding: 0 40px 0 16px;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%2398A2B3' stroke-width='2' fill='none'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  cursor: pointer;
}
.download-note { color: var(--text-faint); font-size: 13.5px; }
.download-alt { margin-top: 14px; font-size: 14px; }
.download-facts {
  margin: 46px auto 0;
  max-width: 620px;
  text-align: left;
  display: grid;
  gap: 10px;
}
.download-facts .fact {
  display: flex;
  gap: 12px;
  color: var(--text-muted);
  font-size: 14.5px;
}
.download-facts .fact::before { content: "✓"; color: var(--green); font-weight: 700; }
.dl-status { margin-top: 16px; font-size: 14px; color: var(--text-faint); }
.dl-status a { font-weight: 600; }

/* ---------- Feature page ---------- */

.features-hero { padding: 64px 0 8px; }
.features-hero .container { text-align: left; }
.features-hero h1 { font-size: clamp(30px, 4.5vw, 44px); margin-bottom: 14px; }
.features-sub { margin: 0 0 8px; max-width: 760px; }

.feature-group { padding: 56px 0; border-top: 1px solid var(--border); }
.feature-group:first-of-type { border-top: 0; }
.feature-group .group-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  padding: 5px 14px;
  border-radius: 999px;
  margin-bottom: 16px;
}
.tag-blue { background: rgba(46,155,240,0.14); color: var(--accent); }
.tag-green { background: rgba(53,199,89,0.14); color: var(--green); }
.tag-orange { background: rgba(245,138,36,0.14); color: var(--orange); }
.tag-amber { background: rgba(245,165,36,0.14); color: var(--amber); }

.feature-list { display: grid; gap: 14px; margin-top: 26px; }
.feature-row {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 24px;
}
.feature-row h3 { font-size: 16.5px; margin-bottom: 6px; }
.feature-row p { color: var(--text-muted); font-size: 14.5px; }
.feature-row .limit {
  margin-top: 10px;
  font-size: 13.5px;
  color: var(--text-faint);
  border-left: 3px solid var(--amber);
  padding-left: 12px;
}

.tech-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 14px; }

/* ---------- Legal ---------- */

.legal { max-width: 780px; margin: 0 auto; padding: 56px 24px 80px; }
.legal h1 { font-size: 34px; margin-bottom: 8px; }
.legal h2 { font-size: 22px; margin: 44px 0 12px; padding-top: 24px; border-top: 1px solid var(--border); }
.legal h3 { font-size: 17px; margin: 22px 0 8px; }
.legal p, .legal li { color: var(--text-muted); font-size: 15px; margin-bottom: 10px; }
.legal ul { padding-left: 22px; }
.legal .placeholder {
  background: rgba(245, 165, 36, 0.1);
  border: 1px dashed var(--amber);
  border-radius: var(--radius);
  padding: 14px 18px;
  color: var(--amber);
  font-size: 14px;
}

/* ---------- CTA + footer ---------- */

.cta {
  text-align: center;
  padding: 88px 0;
  position: relative;
  overflow: hidden;
}
.cta::before {
  content: "";
  position: absolute;
  inset: auto -20% -70%;
  height: 130%;
  background: radial-gradient(ellipse 55% 55% at 50% 100%, rgba(24, 116, 255, 0.22), transparent 70%);
  pointer-events: none;
}
.cta .container { position: relative; }
.cta h2 { font-size: clamp(28px, 4vw, 42px); margin-bottom: 14px; }
.cta p { color: var(--text-muted); margin-bottom: 30px; }

.site-footer {
  border-top: 1px solid var(--border);
  padding: 44px 0;
  color: var(--text-faint);
  font-size: 14px;
}
.site-footer .container {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  justify-content: space-between;
  align-items: flex-start;
}
.footer-links { display: flex; flex-wrap: wrap; gap: 8px 20px; }
.footer-links a { color: var(--text-muted); }
.footer-links a:hover { color: var(--text); }
.footer-brand { display: flex; align-items: center; gap: 10px; font-weight: 700; letter-spacing: 0.08em; color: var(--text); }
.footer-brand svg { width: 24px; height: 24px; }
.footer-note { flex-basis: 100%; font-size: 13px; color: var(--text-faint); }

/* ---------- Responsive ---------- */

@media (max-width: 760px) {
  .site-nav a.nav-link { display: none; }
  .mock-right { display: none; }
  .mock-favs { grid-template-columns: repeat(2, 1fr); }
  .download-panel { padding: 28px 20px; }
}


/* ----------------------------------------------------------------- 404 page */
.nf-wrap {
  min-height: 100vh;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 3rem 1.5rem;
  position: relative;
  z-index: 1;
}
.nf-inner { max-width: 46ch; }
.nf-inner img { width: 76px; height: auto; margin: 0 auto 26px; }
.nf-code {
  font-size: clamp(4.5rem, 17vw, 8.5rem);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.04em;
  margin: 0;
  opacity: 0.13;
}
.nf-inner h1 { font-size: clamp(1.5rem, 4.5vw, 2.1rem); margin: -0.3em 0 0.6rem; }
.nf-inner p { margin: 0 0 1.9rem; opacity: 0.75; }