/* Manuel du skill HyperFrames — feuille de styles */
:root {
  --bg: #f7f5f1;
  --surface: #ffffff;
  --ink: #171c24;
  --muted: #5b6573;
  --line: #dfdbd3;
  --accent: #c8501a;
  --accent-soft: #fdeadd;
  --code-bg: #0f141b;
  --code-ink: #d7dee8;
  --radius: 12px;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0f1419;
    --surface: #161d26;
    --ink: #f2efe9;
    --muted: #a3adba;
    --line: #2a3441;
    --accent: #ff8a3d;
    --accent-soft: #2c2019;
    --code-bg: #0a0e13;
  }
}
:root[data-theme="dark"] {
  --bg: #0f1419;
  --surface: #161d26;
  --ink: #f2efe9;
  --muted: #a3adba;
  --line: #2a3441;
  --accent: #ff8a3d;
  --accent-soft: #2c2019;
  --code-bg: #0a0e13;
}

* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  scroll-padding-top: 24px;
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 17px/1.65 var(--sans);
  -webkit-font-smoothing: antialiased;
}
a {
  color: var(--accent);
}
img,
video {
  max-width: 100%;
  display: block;
}

/* Mise en page : sommaire latéral + contenu */
.layout {
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr);
  max-width: 1280px;
  margin: 0 auto;
}
.sidebar {
  position: sticky;
  top: 0;
  align-self: start;
  height: 100vh;
  overflow-y: auto;
  padding: 32px 20px 32px 28px;
  border-right: 1px solid var(--line);
}
.brand {
  display: block;
  font-weight: 800;
  font-size: 19px;
  letter-spacing: -0.02em;
  color: var(--ink);
  text-decoration: none;
}
.brand span {
  color: var(--accent);
}
.brand-sub {
  margin: 4px 0 24px;
  font-size: 13px;
  color: var(--muted);
}
.toc {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: toc;
}
.toc a {
  display: block;
  padding: 7px 12px;
  border-radius: 8px;
  font-size: 15px;
  color: var(--muted);
  text-decoration: none;
}
.toc a:hover {
  color: var(--ink);
}
.toc a.is-active {
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 600;
}
.theme-toggle {
  margin-top: 24px;
  padding: 8px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface);
  color: var(--ink);
  font: inherit;
  font-size: 14px;
  cursor: pointer;
}

main {
  min-width: 0;
  padding: 56px 56px 96px;
}
section {
  padding-top: 24px;
  margin-bottom: 64px;
}
h1 {
  margin: 0 0 16px;
  font-size: clamp(34px, 5vw, 54px);
  line-height: 1.08;
  letter-spacing: -0.035em;
  text-wrap: balance;
}
h1 em {
  font-style: normal;
  color: var(--accent);
}
h2 {
  margin: 0 0 16px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--line);
  font-size: 30px;
  line-height: 1.2;
  letter-spacing: -0.025em;
}
h3 {
  margin: 40px 0 10px;
  font-size: 21px;
  letter-spacing: -0.015em;
}
p,
ul,
ol {
  max-width: 72ch;
}
.lead {
  font-size: 20px;
  color: var(--muted);
}
.kicker {
  margin: 0 0 12px;
  font: 600 13px var(--mono);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
}

/* Étapes numérotées */
.step {
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr);
  gap: 20px;
  margin-top: 44px;
}
.step-num {
  width: 52px;
  height: 52px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  font: 800 20px var(--sans);
  font-variant-numeric: tabular-nums;
}
:root[data-theme="dark"] .step-num {
  color: #0f1419;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .step-num {
    color: #0f1419;
  }
}
.step h3 {
  margin-top: 10px;
}

/* Code et commandes */
code {
  padding: 2px 6px;
  border-radius: 6px;
  background: var(--accent-soft);
  font: 0.88em var(--mono);
  overflow-wrap: anywhere;
}
.cmd,
pre.code {
  position: relative;
  max-width: 100%;
  margin: 16px 0;
  border-radius: var(--radius);
  background: var(--code-bg);
  color: var(--code-ink);
  font: 14.5px/1.6 var(--mono);
}
.cmd pre,
pre.code {
  margin: 0;
  padding: 16px 18px;
  overflow-x: auto;
}
.cmd pre {
  padding-right: 92px;
}
.cmd code,
pre.code code {
  padding: 0;
  background: none;
  font: inherit;
  overflow-wrap: normal;
}
.cmd .c,
pre.code .c {
  color: #8b97a7;
}
.copy {
  position: absolute;
  top: 10px;
  right: 10px;
  padding: 5px 12px;
  border: 1px solid #3a4553;
  border-radius: 8px;
  background: #1a212b;
  color: #d7dee8;
  font: 12.5px var(--sans);
  cursor: pointer;
}
.copy:hover {
  border-color: #ff8a3d;
}

/* Captures */
figure {
  margin: 20px 0;
}
figure img {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  cursor: zoom-in;
}
figcaption {
  margin-top: 8px;
  font-size: 14px;
  color: var(--muted);
}
.pair {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

/* Encadrés, tableaux, cartes */
.note {
  max-width: 72ch;
  margin: 20px 0;
  padding: 14px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}
.note strong:first-child {
  color: var(--accent);
}
.table-wrap {
  margin: 20px 0;
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 15px;
}
th,
td {
  padding: 11px 16px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--line);
}
tr:last-child td {
  border-bottom: 0;
}
th {
  font-size: 13px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}
td code {
  white-space: nowrap;
}
.facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin: 32px 0;
  padding: 0;
  list-style: none;
  max-width: none;
}
.facts li {
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}
.facts b {
  display: block;
  font-size: 26px;
  letter-spacing: -0.02em;
  color: var(--accent);
}
.facts span {
  font-size: 14.5px;
  color: var(--muted);
}

/* Conversation reconstituée */
.chat {
  max-width: 72ch;
  margin: 20px 0;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}
.chat p {
  margin: 0 0 12px;
  padding: 12px 16px;
  border-radius: 12px;
  font-size: 15.5px;
}
.chat p:last-of-type {
  margin-bottom: 0;
}
.chat .me {
  margin-left: 15%;
  background: var(--accent-soft);
}
.chat .ai {
  margin-right: 8%;
  border: 1px solid var(--line);
}
.chat small {
  display: block;
  margin-bottom: 4px;
  font: 600 12px var(--mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

/* Vidéos */
.videos {
  display: grid;
  grid-template-columns: minmax(0, 2.2fr) minmax(0, 1fr);
  gap: 24px;
  align-items: start;
}
video {
  width: 100%;
  border-radius: var(--radius);
  background: #000;
}

/* Visionneuse */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 10;
  display: none;
  place-items: center;
  padding: 24px;
  background: rgba(8, 11, 15, 0.9);
  cursor: zoom-out;
}
.lightbox.is-open {
  display: grid;
}
.lightbox img {
  max-height: 92vh;
  width: auto;
  border-radius: 8px;
}

footer {
  padding-top: 24px;
  border-top: 1px solid var(--line);
  font-size: 14px;
  color: var(--muted);
}

@media (max-width: 900px) {
  .layout {
    display: block;
  }
  .sidebar {
    position: static;
    height: auto;
    padding: 20px 16px 8px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }
  .brand-sub {
    margin-bottom: 12px;
  }
  .toc {
    display: flex;
    gap: 4px;
    overflow-x: auto;
    padding-bottom: 8px;
  }
  .toc a {
    white-space: nowrap;
  }
  .theme-toggle {
    margin: 4px 0 12px;
  }
  main {
    padding: 28px 16px 64px;
  }
  .step {
    grid-template-columns: 1fr;
    gap: 8px;
  }
  .facts,
  .pair,
  .videos {
    grid-template-columns: 1fr;
  }
  .chat .me,
  .chat .ai {
    margin-left: 0;
    margin-right: 0;
  }
}