/* RuVox landing page — no dependencies, no build step. */

/* Theme switching: `data-theme` on <html> is one of `system`, `light`, `dark`.
   The dark palette is deliberately listed twice — once for the system
   preference and once for the explicit choice — so that the page still
   follows the OS theme when JavaScript is unavailable. */

:root,
:root[data-theme="light"] {
  color-scheme: light;
  --bg: #ffffff;
  --bg-soft: #f6f5f9;
  --fg: #1a1a1e;
  --muted: #5c5c66;
  --border: #e4e4e9;
  --accent: #8a3fd0;
  --accent-fg: #ffffff;
  --accent-soft: #f2ebfa;
  --code-bg: #f2f0f7;
  --radius: 12px;
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #141418;
  --bg-soft: #1d1d23;
  --fg: #e9e9ef;
  --muted: #a1a1ae;
  --border: #2b2b33;
  --accent: #b98ae4;
  --accent-fg: #141418;
  --accent-soft: #241b30;
  --code-bg: #23232b;
}

@media (prefers-color-scheme: dark) {
  :root[data-theme="system"] {
    color-scheme: dark;
    --bg: #141418;
    --bg-soft: #1d1d23;
    --fg: #e9e9ef;
    --muted: #a1a1ae;
    --border: #2b2b33;
    --accent: #b98ae4;
    --accent-fg: #141418;
    --accent-soft: #241b30;
    --code-bg: #23232b;
  }
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue",
    Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

.wrap {
  max-width: 880px;
  margin: 0 auto;
  padding: 0 24px;
}

a {
  color: var(--accent);
}

code {
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.9em;
  background: var(--code-bg);
  border-radius: 4px;
  padding: 0.1em 0.35em;
  /* Without this, fonts with ligatures turn `!=` into `≠` and `->` into `→`,
     which misrepresents the literal source fragments in the norm table. */
  font-variant-ligatures: none;
}

/* Header */

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  height: 60px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--fg);
  font-weight: 600;
  font-size: 1.05rem;
  text-decoration: none;
}

.header-nav {
  display: flex;
  gap: 20px;
  font-size: 0.9rem;
}

.header-nav a {
  color: var(--muted);
  text-decoration: none;
}

.header-nav a:hover {
  color: var(--fg);
}

.header-tools {
  display: flex;
  align-items: center;
  gap: 18px;
}

.theme-switch {
  display: inline-flex;
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
}

.theme-switch button {
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--muted);
  font: inherit;
  font-size: 0.78rem;
  line-height: 1;
  padding: 6px 10px;
  cursor: pointer;
}

.theme-switch button + button {
  border-left: 1px solid var(--border);
}

.theme-switch button:hover {
  color: var(--fg);
}

.theme-switch button[aria-pressed="true"] {
  background: var(--bg-soft);
  color: var(--fg);
}

/* Hero */

.hero {
  padding-top: 72px;
  padding-bottom: 40px;
}

.hero h1 {
  margin: 0 0 20px;
  font-size: clamp(1.9rem, 5vw, 2.8rem);
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.lead {
  margin: 0 0 14px;
  font-size: 1.12rem;
  max-width: 46em;
}

.lead-sub {
  margin: 0 0 28px;
  color: var(--muted);
  max-width: 46em;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 22px;
}

.btn {
  display: inline-block;
  padding: 11px 22px;
  border-radius: 8px;
  border: 1px solid transparent;
  font-size: 0.95rem;
  font-weight: 500;
  text-decoration: none;
}

.btn-primary {
  background: var(--accent);
  color: var(--accent-fg);
}

.btn-primary:hover {
  filter: brightness(1.08);
}

.btn-ghost {
  border-color: var(--border);
  color: var(--fg);
}

.btn-ghost:hover {
  background: var(--bg-soft);
}

.badges {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 0.82rem;
  color: var(--muted);
}

.badges li {
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 3px 12px;
}

/* Sections */

.section {
  padding-top: 56px;
}

.section h2 {
  margin: 0 0 12px;
  font-size: 1.55rem;
  letter-spacing: -0.01em;
}

.section-lead {
  margin: 0 0 24px;
  color: var(--muted);
  max-width: 46em;
}

.section-note {
  margin: 22px 0 0;
  color: var(--muted);
  font-size: 0.92rem;
  max-width: 46em;
}

.shot {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

/* Samples */

.source-text {
  margin: 0 0 28px;
  padding: 18px 22px;
  background: var(--bg-soft);
  border-left: 3px solid var(--accent);
  border-radius: 0 var(--radius) var(--radius) 0;
}

.source-text h3 {
  margin: 0 0 10px;
  font-size: 1rem;
  color: var(--fg);
}

.source-text p {
  margin: 0;
  color: var(--muted);
  font-size: 0.94rem;
}

.samples {
  display: grid;
  gap: 14px;
}

.sample {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 18px 14px;
}

.sample-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
}

.sample-head h3 {
  margin: 0;
  font-size: 1.02rem;
}

.voice {
  color: var(--muted);
  font-size: 0.86rem;
}

.sample audio {
  display: block;
  width: 100%;
}

.sample-dl {
  display: inline-block;
  margin-top: 8px;
  font-size: 0.82rem;
  color: var(--accent);
  text-decoration: none;
}

.sample-dl:hover {
  text-decoration: underline;
}

/* Normalization */

.norm {
  display: grid;
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.norm-row {
  display: grid;
  grid-template-columns: minmax(140px, 260px) 1fr;
  gap: 16px;
  align-items: baseline;
  padding: 11px 16px;
  background: var(--bg);
}

.norm-row code {
  background: none;
  padding: 0;
  color: var(--fg);
  overflow-wrap: anywhere;
}

.norm-row span {
  color: var(--muted);
}

.norm-row span::before {
  content: "→ ";
  color: var(--accent);
}

/* Features */

.features {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 14px;
}

.features li {
  padding-left: 18px;
  border-left: 2px solid var(--accent-soft);
}

/* Install */

.install {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
}

.card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 18px;
}

.card h3 {
  margin: 0 0 6px;
  font-size: 1rem;
}

.card .file {
  margin: 0 0 10px;
}

.card p {
  margin: 0 0 8px;
  color: var(--muted);
  font-size: 0.9rem;
}

.card p:last-child {
  margin-bottom: 0;
}

/* Footer */

.site-footer {
  margin-top: 72px;
  border-top: 1px solid var(--border);
  padding: 24px 0 40px;
  font-size: 0.85rem;
  color: var(--muted);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 24px;
  justify-content: space-between;
  align-items: center;
}

.footer-inner nav {
  display: flex;
  gap: 18px;
}

.footer-inner a {
  color: var(--muted);
}

/* Narrow screens */

@media (max-width: 640px) {
  .hero {
    padding-top: 44px;
  }

  .site-header .header-inner {
    height: auto;
    padding-top: 10px;
    padding-bottom: 10px;
  }

  .header-nav {
    display: none;
  }

  .theme-switch button {
    padding: 5px 7px;
    font-size: 0.74rem;
  }

  .norm-row {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .sample-head {
    flex-direction: column;
    gap: 2px;
  }
}