/* Carnet — site de téléchargement. Tokens identiques à src/renderer/css/app.css (clair + sombre
   par prefers-color-scheme). Direction artistique « cahier Seyès » : papier réglé, couverture bleu
   encre, fiches bristol, stylo vermillon. Polices système uniquement, aucun style inline (CSP). */

:root {
  --paper: #f3eee3;
  --sheet: #fbf8f1;
  --card: #fffdf8;
  --ink: #1d1b17;
  --ink-soft: #5b554b;
  --ink-faint: #8a8275;
  --rule: rgba(60, 102, 170, 0.12);
  --rule-strong: rgba(60, 102, 170, 0.24);
  --margin: #e07a82;
  --accent: #c13d24;
  --accent-ink: #fffaf3;
  --accent-wash: rgba(193, 61, 36, 0.09);
  --blue: #2f5fa8;
  --blue-wash: rgba(47, 95, 168, 0.09);
  --ok: #2c6e4f;
  --ok-wash: rgba(44, 110, 79, 0.1);
  --danger: #a8231b;
  --danger-wash: #fbe9e4;
  --focus: #1e5bc6;

  --cover: #1f2c46;
  --cover-2: #26375a;
  --cover-ink: #efe8da;
  --cover-soft: #b7b3c4;

  --col-todo: var(--blue);
  --col-doing: var(--accent);
  --col-done: var(--ok);

  --shadow: 0 1px 0 rgba(29, 27, 23, 0.04), 0 14px 32px -20px rgba(52, 40, 20, 0.4);
  --shadow-card: 0 1px 1px rgba(29, 27, 23, 0.07), 0 6px 14px -10px rgba(52, 40, 20, 0.45);
  --lift: 0 3px 6px rgba(29, 27, 23, 0.1), 0 26px 44px -14px rgba(52, 40, 20, 0.55);

  --font-display: "Iowan Old Style", "Palatino Linotype", "Book Antiqua", Palatino, "URW Palladio L", Georgia, serif;
  --font-body: Bahnschrift, "DIN Alternate", "Segoe UI Variable Text", "Segoe UI", "Helvetica Neue", sans-serif;
  --font-mono: "Cascadia Code", "Cascadia Mono", Consolas, "SF Mono", ui-monospace, monospace;

  --side: 17.5rem;
  --radius: 4px;
  --tap: 2.5rem;
  --ease: cubic-bezier(.2, .8, .2, 1);
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper: #131517;
    --sheet: #1c1f22;
    --card: #23272b;
    --ink: #ece6da;
    --ink-soft: #b2aa9c;
    --ink-faint: #858073;
    --rule: rgba(150, 185, 235, 0.06);
    --rule-strong: rgba(150, 185, 235, 0.12);
    --margin: #b4545d;
    --accent: #ff7f5c;
    --accent-ink: #1a1310;
    --accent-wash: rgba(255, 127, 92, 0.12);
    --blue: #8db4ff;
    --blue-wash: rgba(141, 180, 255, 0.12);
    --ok: #7fcfa6;
    --ok-wash: rgba(127, 207, 166, 0.12);
    --danger: #ff8a7a;
    --danger-wash: rgba(255, 110, 90, 0.12);
    --focus: #8db4ff;
    --cover: #0d1220;
    --cover-2: #141b2e;
    --cover-ink: #e6e0d3;
    --cover-soft: #9a97a8;
    --shadow: 0 1px 0 rgba(0, 0, 0, 0.3), 0 14px 32px -18px rgba(0, 0, 0, 0.75);
    --shadow-card: 0 1px 1px rgba(0, 0, 0, 0.35), 0 8px 16px -10px rgba(0, 0, 0, 0.8);
    --lift: 0 3px 8px rgba(0, 0, 0, 0.45), 0 26px 46px -12px rgba(0, 0, 0, 0.85);
    color-scheme: dark;
  }
}

/* ================================================================== Base */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 1rem; }
body {
  margin: 0;
  background-color: var(--paper);
  /* Réglure Seyès : fines tous les 8px, marquées tous les 32px, verticales tous les 32px. */
  background-image:
    linear-gradient(to bottom, var(--rule-strong) 1px, transparent 1px),
    linear-gradient(to right, var(--rule) 1px, transparent 1px),
    repeating-linear-gradient(to bottom, var(--rule) 0 1px, transparent 1px 8px);
  background-size: 100% 32px, 32px 100%, 100% 8px;
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-size-adjust: 100%;
}
img { max-width: 100%; height: auto; }
[hidden] { display: none !important; }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; }
.cover :focus-visible { outline-color: var(--cover-ink); }
main:focus { outline: none; }
a { color: var(--blue); text-underline-offset: 3px; }
a:hover { color: var(--accent); }
code, .mono { font-family: var(--font-mono); font-size: .88em; padding: .1em .35em; border-radius: 3px; background: var(--blue-wash); overflow-wrap: anywhere; }

.visually-hidden {
  position: absolute !important; width: 1px; height: 1px; margin: -1px; padding: 0; border: 0;
  overflow: hidden; clip: rect(0 0 0 0); clip-path: inset(50%); white-space: nowrap;
}
.skip-link {
  position: absolute; left: 1rem; top: -4rem; z-index: 100; padding: .75rem 1rem;
  background: var(--ink); color: var(--paper); border-radius: var(--radius); text-decoration: none; font-weight: 600;
}
.skip-link:focus { top: 1rem; color: var(--paper); }
.eyebrow { margin: 0; font-size: .72rem; letter-spacing: .18em; text-transform: uppercase; color: var(--ink-soft); }
.eyebrow--cover { color: var(--cover-soft); }

.wrap { --gutter: clamp(1.75rem, 6vw, 3rem); width: min(70rem, 100%); margin-inline: auto; padding-inline: var(--gutter); }

/* ================================================================== Couverture (en-tête, héros, pied) */
.cover {
  color: var(--cover-ink);
  background-color: var(--cover);
  /* Toile de reliure : trame fine croisée. */
  background-image:
    repeating-linear-gradient(0deg, rgba(255, 255, 255, .025) 0 1px, transparent 1px 3px),
    repeating-linear-gradient(90deg, rgba(0, 0, 0, .08) 0 1px, transparent 1px 3px),
    linear-gradient(160deg, var(--cover-2), var(--cover));
}
.cover a { color: var(--cover-ink); }
.cover a:hover { color: #fff; }

.site-header { border-bottom: 1px solid rgba(255, 255, 255, .1); }
.site-header__bar { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: .25rem 1.5rem; padding-block: .6rem; }
.brand { display: inline-flex; align-items: center; gap: .55rem; min-height: 2.75rem; font-family: var(--font-display); font-size: 1.5rem; font-style: italic; text-decoration: none; }
.brand__logo { width: 2.25rem; height: 2.25rem; object-fit: contain; }
.site-nav { display: flex; flex-wrap: wrap; gap: 0 1.1rem; }
.site-nav a {
  display: inline-flex; align-items: center; min-height: 2.75rem; padding-inline: .1rem;
  font-size: .92rem; font-weight: 600; letter-spacing: .02em; text-decoration: none; border-bottom: 2px solid transparent;
}
.site-nav a:hover { border-bottom-color: var(--accent); }

.hero { padding-block: clamp(2.5rem, 7vw, 5rem) clamp(3rem, 8vw, 5.5rem); box-shadow: inset 0 -10px 18px -14px rgba(0, 0, 0, .8); }
.hero__grid { display: grid; grid-template-columns: minmax(0, 1fr); gap: 2rem; align-items: center; }
.hero__title {
  margin: .5rem 0 1rem; font-family: var(--font-display); font-weight: 400; line-height: 1.02;
  font-size: clamp(2.3rem, 7.5vw, 4.2rem); letter-spacing: -.02em; overflow-wrap: break-word;
}
.hero__title em {
  font-style: italic; color: #ffa58d;
  background: linear-gradient(transparent 84%, rgba(255, 127, 92, .28) 84%, rgba(255, 127, 92, .28) 96%, transparent 96%);
}
.hero__lead { margin: 0 0 1.75rem; max-width: 34rem; color: var(--cover-ink); opacity: .92; font-size: 1.08rem; }
.hero__cta { margin: 0 0 .6rem; }
.hero__meta { margin: 0 0 1rem; min-height: 1.4rem; color: var(--cover-soft); font-family: var(--font-mono); font-size: .8rem; }
.hero__links { display: flex; flex-wrap: wrap; gap: .25rem 1.5rem; margin: 0 0 1.25rem; }
.hero__links a { display: inline-flex; align-items: center; min-height: 2.5rem; font-weight: 600; }
.hero__note { margin: 0; color: var(--cover-soft); font-size: .86rem; letter-spacing: .03em; }
.hero__art { display: none; }

.site-footer { padding-block: 1.75rem; box-shadow: inset 0 10px 18px -14px rgba(0, 0, 0, .8); }
.site-footer__bar { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: .5rem 1.5rem; }
.site-footer p { margin: 0; }
.site-footer__brand { font-family: var(--font-display); font-style: italic; font-size: 1.15rem; }
.site-footer__links a { display: inline-flex; align-items: center; min-height: 2.5rem; font-size: .92rem; }

/* ================================================================== Papier réglé */
.paper { position: relative; padding-block: 1rem 3rem; }
/* Marge rouge du cahier. */
.paper::before {
  content: ""; position: absolute; top: 0; bottom: 0; left: .8rem; width: 2px; background: var(--margin); opacity: .7; pointer-events: none;
}
.paper--full { min-height: 100vh; display: grid; align-items: center; }
.section { padding-block: clamp(2rem, 6vw, 3.5rem) 0; }
.section__title {
  margin: .3rem 0 1.5rem; font-family: var(--font-display); font-weight: 400; line-height: 1.1;
  font-size: clamp(1.7rem, 4.5vw, 2.5rem); letter-spacing: -.015em;
}

/* ================================================================== Boutons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .4rem;
  min-height: 2.75rem; padding: .5rem 1.1rem;
  border: 2px solid var(--ink); border-radius: 999px; background: transparent; color: var(--ink);
  font: 600 .92rem/1.2 var(--font-body); letter-spacing: .02em; text-decoration: none; cursor: pointer; text-align: center;
  transition: background-color .15s, color .15s, border-color .15s, transform .15s var(--ease);
}
.btn:hover:not([aria-disabled="true"]) { background: var(--accent-wash); color: var(--ink); }
.btn:active:not([aria-disabled="true"]) { transform: translateY(1px); }
.btn--large { min-height: 3.4rem; padding: .75rem 1.7rem; font-size: 1.08rem; }
.btn--small { min-height: 2.5rem; padding: .35rem .9rem; font-size: .86rem; }
.btn--accent, .cover .btn--accent {
  background: var(--accent); border-color: var(--accent); color: var(--accent-ink);
  box-shadow: 0 10px 22px -12px rgba(0, 0, 0, .7);
}
.btn--accent:hover:not([aria-disabled="true"]), .cover .btn--accent:hover:not([aria-disabled="true"]) {
  background: color-mix(in srgb, var(--accent) 86%, black); border-color: color-mix(in srgb, var(--accent) 86%, black); color: var(--accent-ink);
}
.btn[aria-disabled="true"] { opacity: .6; cursor: not-allowed; box-shadow: none; }

/* ================================================================== Fiches bristol */
.sheet-card, .release {
  position: relative; background-color: var(--card); border-radius: var(--radius); box-shadow: var(--shadow-card);
}
.sheet-card { padding: 1.1rem 1.25rem 1.2rem 2.4rem; }
.sheet-card::before, .release::before {
  content: ""; position: absolute; top: 0; bottom: 0; left: 1.5rem; width: 1px;
  background: color-mix(in srgb, var(--margin) 60%, transparent);
}
.sheet-card::after {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 4px; border-radius: var(--radius) var(--radius) 0 0;
  background: var(--accent);
}
.features > li:nth-child(3n+2)::after, .install > li:nth-child(3n+2)::after { background: var(--blue); }
.features > li:nth-child(3n)::after, .install > li:nth-child(3n)::after { background: var(--ok); }
.sheet-card__title { margin: .2rem 0 .45rem; font-family: var(--font-display); font-weight: 400; font-size: 1.3rem; line-height: 1.2; }
.sheet-card p { margin: 0; color: var(--ink-soft); }

.features, .install { list-style: none; margin: 0; padding: 0; display: grid; gap: 1rem; grid-template-columns: minmax(0, 1fr); }
.tag {
  display: inline-block; margin-left: .4rem; padding: .05rem .5rem; border-radius: 999px; vertical-align: .15em;
  background: var(--accent-wash); color: var(--accent); border: 1px solid var(--accent);
  font: 700 .66rem/1.5 var(--font-body); letter-spacing: .1em; text-transform: uppercase;
}

.callout {
  margin: 1.5rem 0 0; padding: 1rem 1.25rem 1rem 1.25rem; background: var(--blue-wash);
  border-left: 4px solid var(--blue); border-radius: 0 var(--radius) var(--radius) 0;
}
.callout__title { margin: 0 0 .4rem; font-family: var(--font-display); font-weight: 400; font-size: 1.25rem; }
.callout p { margin: 0 0 .5rem; color: var(--ink); }
.callout__steps { margin: 0; padding-left: 1.4rem; }
.callout__steps li::marker { color: var(--accent); font-weight: 700; }

/* ================================================================== Versions */
.status { margin: 0 0 1rem; color: var(--ink-soft); font-family: var(--font-display); font-style: italic; font-size: 1.1rem; overflow-wrap: anywhere; }
.status:empty { display: none; }
.status--error { color: var(--danger); font-style: normal; font-family: var(--font-body); font-size: 1rem; }
.status--error a { color: var(--danger); font-weight: 600; }
.releases { display: grid; gap: 1.1rem; }
.release { padding: 1.2rem 1.25rem 1.2rem 2.4rem; }
.release--latest { border-top: 5px solid var(--accent); }
.release__head { display: flex; flex-wrap: wrap; align-items: baseline; gap: .3rem .75rem; margin-bottom: .6rem; }
.release__title { margin: 0; font-family: var(--font-display); font-weight: 400; font-size: 1.55rem; line-height: 1.15; }
.release__date { margin: 0; color: var(--ink-soft); font-size: .9rem; }
.badge {
  display: inline-block; padding: .05rem .6rem; border-radius: 999px; border: 1px solid var(--ok);
  background: var(--ok-wash); color: var(--ok); font: 700 .7rem/1.6 var(--font-body); letter-spacing: .1em; text-transform: uppercase;
}
.release__notes { margin: 0 0 1rem; padding-left: 1.2rem; color: var(--ink); }
.release__notes li { margin: .15rem 0; overflow-wrap: anywhere; }
.release__notes li::marker { color: var(--accent); }
.release__assets { display: flex; flex-wrap: wrap; gap: .6rem; margin: 0 0 .9rem; padding: 0; list-style: none; }
.release__assets .btn { flex-direction: column; gap: .15rem; }
.release__assets .btn:first-child { border-color: var(--accent); }
.asset__size { font-family: var(--font-mono); font-size: .74rem; font-weight: 400; color: var(--ink-soft); }
.release__sums > summary { cursor: pointer; min-height: 2.5rem; display: list-item; padding-block: .35rem; color: var(--ink-soft); font-size: .88rem; font-weight: 600; }
.release__sums > summary:hover { color: var(--ink); }
.sums { display: grid; gap: .6rem; margin: .4rem 0 0; }
.sums__row { display: grid; gap: .25rem .75rem; grid-template-columns: minmax(0, 1fr); align-items: center; padding: .55rem .75rem; border: 1px dashed var(--rule-strong); border-radius: var(--radius); }
.sums__label { margin: 0; font-size: .7rem; letter-spacing: .14em; text-transform: uppercase; color: var(--ink-soft); }
.sums__hash { margin: 0; min-width: 0; font-family: var(--font-mono); font-size: .76rem; line-height: 1.45; overflow-wrap: anywhere; user-select: all; }
.copy-btn { justify-self: start; }
.copy-btn[data-state="copied"] { border-color: var(--ok); color: var(--ok); }
.copy-btn[data-state="error"] { border-color: var(--danger); color: var(--danger); }

/* ================================================================== Mises à jour */
.updates {
  position: relative; max-width: 44rem; padding: 1.1rem 1.25rem 1.2rem 2.4rem; background: var(--sheet); border-radius: 3px 3px 6px 6px; box-shadow: var(--shadow);
}
.updates::before { content: ""; position: absolute; top: 0; bottom: 0; left: 1.5rem; width: 2px; background: var(--margin); opacity: .7; }
.updates p { margin: 0 0 .8rem; }
.updates__steps { margin: 0 0 .8rem; padding-left: 1.3rem; }
.updates__steps li { margin: .35rem 0; }
.updates__steps li::marker { color: var(--accent); font-weight: 700; }
.updates__hint { color: var(--ink-soft); font-size: .92rem; margin-bottom: 0 !important; }

/* ================================================================== 404 */
.lost { max-width: 34rem; margin-inline: auto; padding: 2rem 1.25rem 2rem 2.4rem; background: var(--sheet); border-radius: 3px 3px 6px 6px; box-shadow: var(--shadow); }
.lost__logo { display: block; margin-bottom: .75rem; }
.lost .section__title { margin-bottom: .75rem; }
.lost__text { margin: 0 0 1.25rem; color: var(--ink-soft); }

/* ================================================================== Grands écrans */
@media (min-width: 640px) {
  .features, .install { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .paper::before { left: 1.25rem; }
  .sums__row { grid-template-columns: 5.5rem minmax(0, 1fr) auto; }
}
@media (min-width: 860px) {
  .hero__grid { grid-template-columns: minmax(0, 1fr) 15rem; gap: 3rem; }
  .hero__art { display: grid; place-items: center; }
  .hero__logo { width: 100%; max-width: 15rem; transform: rotate(3deg); filter: drop-shadow(0 20px 24px rgba(0, 0, 0, .45)); }
}
@media (min-width: 960px) {
  .features, .install { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .paper::before { left: 2rem; }
}
@media (max-width: 420px) {
  .site-header__bar { justify-content: flex-start; }
  .site-nav a { font-size: .86rem; }
  .release__assets .btn { flex: 1 1 100%; }
}

/* ================================================================== Animations / accessibilité */
@keyframes rise { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }
.release, .sheet-card { animation: rise .4s var(--ease) both; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}
@media (forced-colors: active) {
  .btn--accent { border-color: ButtonText; }
  .release--latest { outline: 2px solid Highlight; }
}