/* Reasonate User Guide - shared stylesheet
   Dark "studio manual" theme mirroring the app: graphite base, per-mode accents.
   Self-contained except Google Fonts (loaded from each page's <head>). */

:root {
  --bg: #0c0d10;
  --bg-elevated: #14161b;
  --card: #191c22;
  --card-hover: #1e222a;
  --line: #262a33;
  --line-soft: #1d2028;
  --text: #e9e7e2;
  --text-dim: #a29e94;
  --text-faint: #6d6a63;

  --amber: #f0a63a;        /* Voice Replacement + brand CTA */
  --teal: #3cbfa9;         /* TTS */
  --indigo: #7a7ef0;       /* Dubbing */
  --violet: #a875ec;       /* Repair */
  --red: #ee5069;          /* SFX & Music */

  --accent: var(--amber);  /* page accent, overridden per chapter */
  --accent-soft: color-mix(in srgb, var(--accent) 14%, transparent);
  --accent-line: color-mix(in srgb, var(--accent) 38%, transparent);

  --font-display: "Bricolage Grotesque", "Avenir Next", "Helvetica Neue", sans-serif;
  --font-body: "Figtree", "Avenir Next", "Segoe UI", sans-serif;
  --font-mono: "IBM Plex Mono", "SF Mono", Menlo, Consolas, monospace;

  --maxw: 1080px;
  --radius: 10px;
}

/* Per-chapter accent themes (set on <body data-accent="...">) */
body[data-accent="tts"]     { --accent: var(--teal); }
body[data-accent="vr"]      { --accent: var(--amber); }
body[data-accent="dubbing"] { --accent: var(--indigo); }
body[data-accent="repair"]  { --accent: var(--violet); }
body[data-accent="sfx"]     { --accent: var(--red); }

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16.5px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* Atmospheric background: graphite gradient + faint accent glow, like the app */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(900px 480px at 82% -10%, var(--accent-soft), transparent 65%),
    radial-gradient(700px 500px at -10% 110%, rgba(122, 126, 240, 0.05), transparent 60%),
    linear-gradient(160deg, #101218 0%, #0c0d10 55%, #0a0b0e 100%);
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }

::selection { background: var(--accent-line); }

/* ---------------------------------------------------------------- nav --- */

.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(14px);
  background: rgba(12, 13, 16, 0.82);
  border-bottom: 1px solid var(--line-soft);
}
.nav-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 18px;
  height: 58px;
}
.nav .wordmark {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 19px;
  letter-spacing: -0.02em;
  color: var(--text);
  white-space: nowrap;
  flex-shrink: 0;
}
.nav .wordmark:hover { text-decoration: none; }
.nav .wordmark .guide-tag {
  font-family: var(--font-mono);
  font-size: 10.5px;
  font-weight: 500;
  color: var(--text-dim);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 2px 6px;
  margin-left: 9px;
  vertical-align: 2px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.nav-links {
  display: flex;
  gap: 4px;
  margin-left: auto;
  overflow-x: auto;
}
.nav-links a {
  color: var(--text-dim);
  font-size: 13px;
  font-weight: 500;
  padding: 6px 8px;
  border-radius: 6px;
  white-space: nowrap;
}
.nav-links a:hover { color: var(--text); background: var(--card); text-decoration: none; }
.nav-links a.active { color: var(--text); background: var(--card); }
.nav-links a .dot {
  display: inline-block;
  width: 7px; height: 7px;
  border-radius: 50%;
  margin-right: 7px;
  vertical-align: 1px;
}
.dot-tts { background: var(--teal); }
.dot-vr { background: var(--amber); }
.dot-dubbing { background: var(--indigo); }
.dot-repair { background: var(--violet); }
.dot-sfx { background: var(--red); }

/* --------------------------------------------------------------- hero --- */

.hero {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 72px 24px 30px;
}
.hero .crumb {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 18px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.hero .crumb::before {
  content: "";
  width: 26px; height: 2px;
  background: var(--accent);
  border-radius: 2px;
}
.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(34px, 5.4vw, 56px);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.06;
  margin: 0 0 18px;
}
.hero p.lede {
  font-size: 19px;
  line-height: 1.6;
  color: var(--text-dim);
  max-width: 640px;
  margin: 0;
}
.hero .badges { margin-top: 26px; display: flex; flex-wrap: wrap; gap: 9px; }
.badge {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-dim);
  border: 1px solid var(--line);
  background: var(--bg-elevated);
  border-radius: 999px;
  padding: 5px 13px;
}

/* Staggered load-in */
@media (prefers-reduced-motion: no-preference) {
  .hero > * { animation: rise 0.55s cubic-bezier(0.2, 0.7, 0.3, 1) both; }
  .hero > *:nth-child(2) { animation-delay: 0.07s; }
  .hero > *:nth-child(3) { animation-delay: 0.14s; }
  .hero > *:nth-child(4) { animation-delay: 0.21s; }
  @keyframes rise {
    from { opacity: 0; transform: translateY(14px); }
    to   { opacity: 1; transform: none; }
  }
}

/* ------------------------------------------------------------- layout --- */

.page {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 26px 24px 90px;
}
.with-toc {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 210px;
  gap: 56px;
}
@media (max-width: 940px) {
  .with-toc { grid-template-columns: 1fr; }
  .toc { display: none; }
}

.toc {
  position: sticky;
  top: 86px;
  align-self: start;
  font-size: 13px;
  border-left: 1px solid var(--line-soft);
  padding-left: 18px;
}
.toc .toc-title {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-faint);
  margin-bottom: 10px;
}
.toc a {
  display: block;
  color: var(--text-dim);
  padding: 4px 0;
  line-height: 1.4;
}
.toc a:hover { color: var(--text); text-decoration: none; }

/* ----------------------------------------------------------- sections --- */

section { margin: 54px 0; }
section:first-child { margin-top: 20px; }

h2 {
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0 0 8px;
  scroll-margin-top: 80px;
}
h2 .kicker {
  display: block;
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 8px;
}
h3 {
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin: 34px 0 6px;
  scroll-margin-top: 80px;
}
p { margin: 12px 0; color: var(--text); }
p.dim, li.dim { color: var(--text-dim); }
ul, ol { padding-left: 24px; margin: 12px 0; }
li { margin: 5px 0; }
li::marker { color: var(--accent); }
strong { font-weight: 600; color: var(--text); }

hr { border: 0; border-top: 1px solid var(--line-soft); margin: 40px 0; }

/* --------------------------------------------------------------- kbd --- */

kbd {
  font-family: var(--font-mono);
  font-size: 0.82em;
  background: var(--card);
  border: 1px solid var(--line);
  border-bottom-width: 2px;
  border-radius: 5px;
  padding: 2px 7px;
  white-space: nowrap;
}
code {
  font-family: var(--font-mono);
  font-size: 0.86em;
  background: var(--card);
  border: 1px solid var(--line-soft);
  border-radius: 5px;
  padding: 1px 6px;
}

/* --------------------------------------------------------------- ui-x --- */
/* Inline reference to a button/label visible in the app UI */
.ui {
  font-size: 0.88em;
  font-weight: 600;
  background: var(--bg-elevated);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 1px 8px 2px;
  white-space: nowrap;
}

/* -------------------------------------------------------------- steps --- */

.steps { counter-reset: step; margin: 22px 0; padding: 0; list-style: none; }
.steps > li {
  counter-increment: step;
  position: relative;
  padding: 0 0 26px 62px;
  margin: 0;
}
.steps > li::before {
  content: counter(step, decimal-leading-zero);
  position: absolute;
  left: 0; top: -2px;
  font-family: var(--font-display);
  font-size: 21px;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: -0.02em;
}
.steps > li::after {
  content: "";
  position: absolute;
  left: 16px; top: 30px; bottom: 8px;
  width: 1px;
  background: var(--line-soft);
}
.steps > li:last-child::after { display: none; }
.steps > li > strong:first-child { display: block; margin-bottom: 3px; font-size: 17px; }
.steps p { margin: 6px 0; color: var(--text-dim); }
.steps p strong, .steps li strong { color: var(--text); }

/* ----------------------------------------------------------- callouts --- */

.callout {
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  background: var(--bg-elevated);
  border-radius: 8px;
  padding: 13px 18px;
  margin: 20px 0;
  font-size: 15px;
  color: var(--text-dim);
}
.callout .label {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--accent);
  display: block;
  margin-bottom: 5px;
}
.callout strong { color: var(--text); }
.callout.cost { border-left-color: #58c983; }
.callout.cost .label { color: #58c983; }
.callout.warn { border-left-color: #e0b34c; }
.callout.warn .label { color: #e0b34c; }
.callout p { margin: 5px 0; }

/* -------------------------------------------------------- screenshots --- */

.shot { margin: 26px 0; }
.shot img {
  width: 100%;
  height: auto;
  display: block;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 18px 44px -18px rgba(0, 0, 0, 0.65);
}
.shot figcaption {
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--text-faint);
  margin-top: 10px;
  padding-left: 2px;
}
.shot.narrow { max-width: 640px; }

/* --------------------------------------------------------------- grid --- */

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 14px;
  margin: 26px 0;
}
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px 20px 18px;
  position: relative;
  overflow: hidden;
  transition: border-color 0.18s, transform 0.18s, background 0.18s;
}
.card h3 { margin: 8px 0 6px; font-size: 18px; }
.card p { font-size: 14.5px; color: var(--text-dim); margin: 0; }
a.card { display: block; color: var(--text); }
a.card:hover {
  text-decoration: none;
  transform: translateY(-2px);
  background: var(--card-hover);
  border-color: var(--accent-line);
}
.card .accent-bar {
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
}
.card .go {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-faint);
  display: block;
  margin-top: 14px;
}
a.card:hover .go { color: var(--text-dim); }

/* fact strip: quick reference row on mode pages */
.facts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
  border: 1px solid var(--line);
  background: var(--bg-elevated);
  border-radius: var(--radius);
  padding: 16px 22px;
  margin: 26px 0;
  font-size: 14px;
}
.facts div { min-width: 130px; }
.facts .k {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-faint);
  display: block;
}
.facts .v { color: var(--text); font-weight: 500; }

/* --------------------------------------------------------------- table --- */

.tbl-wrap { overflow-x: auto; margin: 20px 0; }
table {
  border-collapse: collapse;
  width: 100%;
  font-size: 14.5px;
}
th {
  text-align: left;
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--text-faint);
  border-bottom: 1px solid var(--line);
  padding: 8px 16px 8px 0;
}
td {
  border-bottom: 1px solid var(--line-soft);
  padding: 9px 16px 9px 0;
  vertical-align: top;
  color: var(--text-dim);
}
td:first-child { color: var(--text); white-space: nowrap; }

/* --------------------------------------------------------------- foot --- */

.pager {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  margin-top: 70px;
  padding-top: 26px;
  border-top: 1px solid var(--line-soft);
}
.pager a {
  color: var(--text-dim);
  font-size: 14.5px;
  max-width: 46%;
}
.pager a span {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--text-faint);
  margin-bottom: 3px;
}
.pager a:hover { color: var(--text); text-decoration: none; }
.pager .next { text-align: right; margin-left: auto; }

footer {
  border-top: 1px solid var(--line-soft);
  margin-top: 30px;
}
.footer-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 36px 24px 46px;
  display: flex;
  flex-wrap: wrap;
  gap: 18px 40px;
  align-items: center;
  font-size: 13.5px;
  color: var(--text-faint);
}
.footer-inner .support a { color: var(--text-dim); margin-right: 18px; }
.footer-inner .support a:hover { color: var(--text); }
.heart { color: #d96a76; }

@media (max-width: 640px) {
  body { font-size: 15.5px; }
  .hero { padding-top: 46px; }
  .nav-inner { gap: 14px; }
}

/* Demo videos — same frame as screenshots */
.shot iframe {
  width: 100%;
  aspect-ratio: 16 / 9;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 18px 44px -18px rgba(0, 0, 0, 0.65);
  display: block;
}
.shot video {
  width: 100%;
  display: block;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 18px 44px -18px rgba(0, 0, 0, 0.65);
}
