/* Traevor — « registre de qualité » : papier chaud, encre, un seul vermillon
   pour les tampons. Serif pour la voix, chasse fixe pour les sources. */

:root {
  --paper: #f3eee4;
  --paper-2: #ebe4d6;
  --ink: #17191c;
  --ink-2: #3b3f45;
  --ink-3: #6c6f73;
  --rule: #cfc6b4;
  --vermillon: #c8381c;
  --vermillon-ink: #9f2a12;
  --night: #121417;
  --night-2: #1d2024;

  --serif: "Fraunces", "Iowan Old Style", Georgia, serif;
  --body: "Literata", Georgia, serif;
  --mono: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, monospace;

  --wrap: 1180px;
  --gutter: clamp(20px, 4vw, 48px);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 400 17px/1.65 var(--body);
  font-optical-sizing: auto;
  -webkit-font-smoothing: antialiased;
  /* Grain de papier, très discret. */
  background-image:
    radial-gradient(rgba(23,25,28,.035) 1px, transparent 1px),
    radial-gradient(rgba(23,25,28,.025) 1px, transparent 1px);
  background-size: 3px 3px, 7px 7px;
  background-position: 0 0, 1px 2px;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--vermillon-ink); }
:focus-visible { outline: 2px solid var(--vermillon); outline-offset: 3px; }

.skip { position: absolute; left: -999px; top: 8px; background: var(--ink); color: var(--paper); padding: 8px 12px; z-index: 10; }
.skip:focus { left: 8px; }

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 var(--gutter); }

/* ── En-tête ─────────────────────────────────────────────────────── */
.masthead {
  position: sticky; top: 0; z-index: 5;
  background: rgba(243,238,228,.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--rule);
}
.masthead__row { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.wordmark {
  font: 600 20px/1 var(--serif); letter-spacing: .22em; text-decoration: none;
}
.wordmark--small { font-size: 15px; }
.wordmark__dot { color: var(--vermillon); }
.nav { display: flex; align-items: center; gap: 28px; font: 500 13px/1 var(--mono); letter-spacing: .04em; text-transform: uppercase; }
.nav a:not(.btn) { text-decoration: none; color: var(--ink-2); }
.nav a:not(.btn):hover { color: var(--vermillon-ink); }

/* ── Boutons ─────────────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  background: var(--ink); color: var(--paper);
  font: 500 14px/1 var(--mono); letter-spacing: .03em;
  padding: 16px 22px; border: 1px solid var(--ink); border-radius: 2px;
  text-decoration: none; cursor: pointer;
  transition: background .2s, color .2s, transform .2s;
}
.btn:hover { background: var(--vermillon); border-color: var(--vermillon); color: #fff; transform: translateY(-1px); }
.btn--small { padding: 10px 14px; font-size: 12px; text-transform: none; letter-spacing: .02em; }
.btn--light { background: var(--paper); color: var(--ink); border-color: var(--paper); }
.btn--light:hover { background: var(--vermillon); border-color: var(--vermillon); color: #fff; }
.btn[disabled] { opacity: .6; cursor: progress; }
.link { font: 500 14px/1 var(--mono); text-decoration: none; color: var(--ink-2); }

/* ── Ouverture ───────────────────────────────────────────────────── */
.hero { padding: clamp(56px, 9vw, 120px) 0 clamp(64px, 8vw, 110px); }
.hero__grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: clamp(32px, 6vw, 88px); align-items: center; }
.kicker { font: 500 12px/1 var(--mono); letter-spacing: .14em; text-transform: uppercase; color: var(--vermillon-ink); margin: 0 0 28px; }
h1 {
  font: 500 clamp(54px, 8.4vw, 112px)/.95 var(--serif);
  letter-spacing: -.035em; margin: 0 0 32px;
  font-variation-settings: "SOFT" 30, "WONK" 0;
}
h1 em { font-style: italic; font-weight: 700; color: var(--vermillon); }
.lede { font-size: clamp(18px, 1.6vw, 21px); line-height: 1.6; color: var(--ink-2); max-width: 34em; margin: 0 0 36px; }
.lede strong { color: var(--ink); font-weight: 600; }
.hero__cta { display: flex; flex-wrap: wrap; align-items: center; gap: 22px; }
.fine { font: 400 12.5px/1.5 var(--mono); color: var(--ink-3); margin: 18px 0 0; }

/* La fiche */
.fiche {
  margin: 0; position: relative;
  background: #fbf8f1;
  border: 1px solid var(--rule);
  padding: 26px 26px 18px;
  box-shadow: 0 1px 0 var(--rule), 12px 14px 0 -1px var(--paper-2), 12px 14px 0 0 var(--rule);
  transform: rotate(-.6deg);
}
.fiche::before { /* marge de registre */
  content: ""; position: absolute; top: 0; bottom: 0; left: 14px; width: 1px; background: rgba(200,56,28,.35);
}
.fiche__head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 18px; }
.fiche__ref { font: 500 11px/1 var(--mono); letter-spacing: .16em; color: var(--ink-3); }
.stamp {
  font: 600 11px/1 var(--mono); letter-spacing: .2em; text-transform: uppercase;
  color: var(--vermillon); border: 1.5px solid var(--vermillon); padding: 6px 9px; border-radius: 2px;
  transform: rotate(-4deg);
  animation: stamp .5s cubic-bezier(.2,1.6,.4,1) 1.1s both;
}
.fiche__name { font: 600 24px/1.2 var(--serif); margin: 0 0 4px; }
.fiche__meta { font: 400 13px/1.4 var(--mono); color: var(--ink-3); margin: 0 0 18px; }
.fiche__rows { margin: 0; }
.row { display: grid; grid-template-columns: 82px 1fr; column-gap: 14px; padding: 12px 0; border-top: 1px dashed var(--rule); }
.row dt { font: 500 11px/1.6 var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--ink-3); grid-row: span 2; }
.row dd { margin: 0; font-size: 15px; line-height: 1.45; }
.row dd.src { font: 400 11.5px/1.5 var(--mono); color: var(--vermillon-ink); }
.row dd.src::before { content: "↳ "; }
.fiche figcaption { font: italic 400 12px/1.4 var(--body); color: var(--ink-3); margin-top: 10px; text-align: right; }

/* ── Sections ────────────────────────────────────────────────────── */
.section { padding: clamp(64px, 9vw, 120px) 0; }
.section--rule { border-top: 1px solid var(--rule); }
.section--ink { background: var(--night); color: #e8e3d8; background-image: none; }
.section--ink a { color: #fff; }
.section__title {
  font: 500 clamp(34px, 4.4vw, 54px)/1.05 var(--serif); letter-spacing: -.02em; margin: 0 0 40px;
}
.num { display: block; font: 500 12px/1 var(--mono); letter-spacing: .16em; color: var(--vermillon); margin-bottom: 18px; }
.split { display: grid; grid-template-columns: .9fr 1.1fr; gap: clamp(32px, 6vw, 96px); align-items: start; }
.split .section__title { margin-bottom: 0; }
.prose p { margin: 0 0 1.1em; font-size: 18px; color: var(--ink-2); }
.prose strong { color: var(--ink); font-weight: 600; }

/* Méthode */
.steps { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); border-top: 2px solid var(--ink); }
.step { padding: 28px 28px 8px 0; border-right: 1px solid var(--rule); }
.step + .step { padding-left: 28px; }
.step:last-child { border-right: 0; }
.step__n { font: 600 italic 42px/1 var(--serif); color: var(--vermillon); }
.step h3 { font: 600 21px/1.25 var(--serif); margin: 18px 0 10px; }
.step p { margin: 0; color: var(--ink-2); font-size: 16px; }

/* Ce que contient une ligne */
.blocks { list-style: none; margin: 0; padding: 0; }
.blocks li { padding: 18px 0; border-top: 1px solid rgba(232,227,216,.16); font-size: 17px; color: #c9c3b6; }
.blocks li:last-child { border-bottom: 1px solid rgba(232,227,216,.16); }
.blocks strong { color: #fff; font-family: var(--serif); font-weight: 600; font-size: 19px; }

/* Pour qui */
.section__aside { margin: 28px 0 0; font-size: 17px; color: #c9c3b6; max-width: 420px; }
.section__aside strong { color: #fff; font-weight: 600; }
.section__intro { max-width: 640px; margin: -16px 0 32px; font-size: 18px; color: var(--ink-2); }
/* Six cartes, trois colonnes : deux rangées séparées par un filet. */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; border-top: 2px solid var(--ink); }
.card { padding: 26px 22px 10px; border-right: 1px solid var(--rule); transition: background .25s; }
.card:nth-child(3n+1) { padding-left: 0; }
.card:nth-child(3n) { border-right: 0; }
.card:nth-child(n+4) { border-top: 1px solid var(--rule); }
.card h3 { font: 600 19px/1.25 var(--serif); margin: 0 0 12px; }
.card p { margin: 0; font-size: 15.5px; color: var(--ink-2); }
.card--plus h3 { font-style: italic; color: var(--vermillon); }

/* Démarrer */
.timeline { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.timeline li { display: flex; gap: 18px; }
.timeline span {
  flex: none; width: 42px; height: 42px; border-radius: 50%; border: 1.5px solid var(--ink);
  display: grid; place-items: center; font: 500 15px/1 var(--mono);
}
.timeline h3 { font: 600 19px/1.3 var(--serif); margin: 6px 0 8px; }
.timeline p { margin: 0; color: var(--ink-2); font-size: 15.5px; }

/* Contact */
.team { margin-top: 40px; display: grid; gap: 18px; font-size: 16px; }
.team p { margin: 0; }
.team a { font-family: var(--mono); font-size: 14px; color: #e8e3d8; }
.form { display: grid; grid-template-columns: 1fr 1fr; gap: 18px 20px; }
.field { display: flex; flex-direction: column; gap: 8px; }
.field--full { grid-column: 1 / -1; }
.field label { font: 500 11.5px/1 var(--mono); letter-spacing: .12em; text-transform: uppercase; color: #a9a397; }
.opt { text-transform: none; letter-spacing: 0; }
.field input, .field textarea {
  font: 400 16px/1.4 var(--body); color: #fff;
  background: var(--night-2); border: 1px solid #34383e; border-radius: 2px; padding: 13px 14px;
  transition: border-color .2s;
}
.field input:focus, .field textarea:focus { border-color: var(--vermillon); outline: none; }
.field textarea { resize: vertical; }
.field input:user-invalid, .field textarea:user-invalid { border-color: #e0664c; }
.fine--ink { color: #8f897e; margin: 0; }
.fine--ink a { color: #c9c3b6; }
.form__actions { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }
.form__status { margin: 0; font: 400 14px/1.4 var(--mono); }
.form__status.ok { color: #9fd4a5; }
.form__status.err { color: #f0907b; }
.hp { position: absolute; left: -10000px; width: 1px; height: 1px; overflow: hidden; }

/* Pied de page */
.footer { border-top: 1px solid var(--rule); padding: 28px 0; font: 400 12.5px/1 var(--mono); color: var(--ink-3); }
.footer__row { display: flex; justify-content: space-between; align-items: center; gap: 20px; flex-wrap: wrap; }
.footer nav { display: flex; gap: 22px; }
.footer a { text-decoration: none; }

/* Pages légales */
.legal { padding: clamp(48px, 7vw, 96px) 0; }
.legal .wrap { max-width: 780px; }
.legal h1 { font-size: clamp(40px, 6vw, 64px); }
.legal h2 { font: 600 22px/1.3 var(--serif); margin: 40px 0 10px; }
.legal p, .legal li { color: var(--ink-2); }
.todo { background: #fde7a8; padding: 0 4px; }

/* ── Mouvement ───────────────────────────────────────────────────── */
.reveal { opacity: 0; transform: translateY(14px); animation: rise .8s cubic-bezier(.2,.7,.2,1) forwards; }
.hero__text .reveal:nth-child(1) { animation-delay: .05s; }
.hero__text .reveal:nth-child(2) { animation-delay: .15s; }
.hero__text .reveal:nth-child(3) { animation-delay: .3s; }
.hero__text .reveal:nth-child(4) { animation-delay: .45s; }
.hero__text .reveal:nth-child(5) { animation-delay: .55s; }
.fiche.reveal { animation-delay: .5s; }
@keyframes rise { to { opacity: 1; transform: none; } }
@keyframes stamp { from { opacity: 0; transform: rotate(-4deg) scale(1.8); } to { opacity: 1; transform: rotate(-4deg) scale(1); } }
.fiche.reveal { animation-name: rise-fiche; }
@keyframes rise-fiche { to { opacity: 1; transform: rotate(-.6deg); } }

@media (prefers-reduced-motion: reduce) {
  .reveal, .stamp { animation: none; opacity: 1; transform: none; }
  .fiche.reveal { transform: rotate(-.6deg); }
  html { scroll-behavior: auto; }
}

/* ── Écrans étroits ──────────────────────────────────────────────── */
@media (max-width: 960px) {
  .hero__grid, .split { grid-template-columns: 1fr; }
  .cards { grid-template-columns: 1fr 1fr; }
  .card:nth-child(odd) { padding-left: 0; border-right: 1px solid var(--rule); }
  .card:nth-child(even) { padding-left: 22px; border-right: 0; }
  .card:nth-child(n+3) { border-top: 1px solid var(--rule); padding-top: 22px; }
  .fiche { transform: none; max-width: 520px; }
  .fiche.reveal { animation-name: rise; }
}
@media (max-width: 720px) {
  .nav a:not(.btn) { display: none; }
  .steps, .timeline, .cards { grid-template-columns: 1fr; }
  .step, .step + .step, .card, .card:nth-child(n) { padding: 22px 0 10px; border-right: 0; }
  .step + .step, .card + .card { border-top: 1px solid var(--rule); }
  .form { grid-template-columns: 1fr; }
  .row { grid-template-columns: 70px 1fr; }
  /* L'ombre décalée dépassait du viewport à 375 px. */
  .fiche { box-shadow: 0 1px 0 var(--rule); }
}