/* Pré-inscription — Bibliothèques et Archives
   Feuille de style conforme à la charte graphique 2023 du Collège de France :
   bleu Pantone 287C, bleu « Cours & séminaires », Lato (communication),
   Crimson (titres). Polices hébergées localement (aucun appel à un tiers). */

@font-face { font-family: "Lato"; font-style: normal; font-weight: 400; font-display: swap;
  src: url("../fonts/lato-latin-400-normal.woff2") format("woff2"); }
@font-face { font-family: "Lato"; font-style: italic; font-weight: 400; font-display: swap;
  src: url("../fonts/lato-latin-400-italic.woff2") format("woff2"); }
@font-face { font-family: "Lato"; font-style: normal; font-weight: 700; font-display: swap;
  src: url("../fonts/lato-latin-700-normal.woff2") format("woff2"); }
@font-face { font-family: "Lato"; font-style: italic; font-weight: 700; font-display: swap;
  src: url("../fonts/lato-latin-700-italic.woff2") format("woff2"); }
@font-face { font-family: "Crimson Pro"; font-style: normal; font-weight: 400; font-display: swap;
  src: url("../fonts/crimson-pro-latin-400-normal.woff2") format("woff2"); }
@font-face { font-family: "Crimson Pro"; font-style: normal; font-weight: 600; font-display: swap;
  src: url("../fonts/crimson-pro-latin-600-normal.woff2") format("woff2"); }

:root {
  --cdf-blue: #004A92;      /* Pantone 287C — R0 V74 B146 */
  --cdf-navy: #212B6B;      /* Cours & séminaires — R33 V43 B107 */
  --cdf-teal: #3C95B0;      /* R60 V149 B176 */
  --cdf-green: #016654;     /* Colloques — R1 V102 B84 */
  --cdf-tint: #E4EBF4;      /* fond clair (branche de laurier) */
  --ink: #1C2333;
  --muted: #566075;
  --line: #C3CEDD;
  --field: #8D9BB2;
  --error: #B3261E;
  --error-tint: #FBECEB;
  --ok-tint: #E5F2EF;
  --sans: "Lato", "Helvetica Neue", Arial, sans-serif;
  --serif: "Crimson Pro", Georgia, "Times New Roman", serif;
  --radius: 2px;
}

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  font-family: var(--sans);
  font-size: 1rem;
  line-height: 1.55;
  color: var(--ink);
  background: #fff;
}

a { color: var(--cdf-blue); text-underline-offset: 0.15em; }
a:hover { color: var(--cdf-navy); }

:focus-visible {
  outline: 3px solid var(--cdf-teal);
  outline-offset: 2px;
}

.skip-link {
  position: absolute; left: 1rem; top: -3rem;
  padding: 0.5rem 1rem; background: #fff; color: var(--cdf-blue);
  font-weight: 700; z-index: 10;
}
.skip-link:focus { top: 0.5rem; }

.wrap { width: 100%; max-width: 72rem; margin: 0 auto; padding: 0 1.5rem; }

/* ── Bandeau : cartouche logo | service ─────────────────────────── */
.site-header { background: var(--cdf-blue); color: #fff; }
.site-header .wrap { display: flex; align-items: center; min-height: 5.5rem; padding-top: 0.9rem; padding-bottom: 0.9rem; }
.cartouche { display: flex; align-items: center; gap: 1.25rem; color: inherit; text-decoration: none; }
.cartouche img { display: block; height: 3.4rem; width: auto; }
.cartouche-text {
  border-left: 1.5px solid rgba(255, 255, 255, 0.85);
  padding-left: 1.25rem;
  font-size: 1.05rem;
  line-height: 1.3;
}
.cartouche-text strong { display: block; font-weight: 700; }

/* ── Titre de page ──────────────────────────────────────────────── */
.page-head { padding: 2.75rem 0 1.5rem; }
.page-head h1 {
  margin: 0;
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(2.4rem, 5vw, 3.4rem);
  line-height: 1.05;
  color: var(--cdf-blue);
  letter-spacing: -0.005em;
}
.page-head .lead { margin: 0.75rem 0 0; max-width: 40rem; font-size: 1.125rem; color: var(--muted); }

/* ── Étapes ─────────────────────────────────────────────────────── */
.steps { list-style: none; display: flex; flex-wrap: wrap; gap: 0.5rem 2rem; margin: 1.75rem 0 0; padding: 0; counter-reset: step; }
.steps li { display: flex; align-items: center; gap: 0.6rem; color: var(--muted); font-size: 0.95rem; counter-increment: step; }
.steps li::before {
  content: counter(step);
  display: inline-grid; place-items: center;
  width: 1.75rem; height: 1.75rem;
  border: 1.5px solid var(--line); border-radius: 50%;
  font-weight: 700; font-size: 0.85rem;
}
.steps li.done::before { border-color: var(--cdf-blue); background: var(--cdf-blue); color: #fff; content: "✓"; }
.steps li[aria-current="step"] { color: var(--ink); font-weight: 700; }
.steps li[aria-current="step"]::before { border-color: var(--cdf-blue); color: var(--cdf-blue); }

/* ── Mise en page ───────────────────────────────────────────────── */
main { flex: 1 0 auto; padding-bottom: 4rem; }
.layout { display: grid; gap: 2.5rem; grid-template-columns: minmax(0, 1fr); }
@media (min-width: 60rem) {
  .layout { grid-template-columns: minmax(0, 1fr) 19rem; gap: 4rem; }
  .layout > .aside { grid-column: 2; grid-row: 1; align-self: start; position: sticky; top: 1.5rem; }
  .layout > .content { grid-column: 1; grid-row: 1; }
}
.content { max-width: 44rem; }

/* ── Encadré d'information ──────────────────────────────────────── */
.aside { background: var(--cdf-tint); padding: 1.5rem 1.5rem 1.25rem; border-top: 4px solid var(--cdf-blue); }
.aside h2 { margin: 0 0 0.75rem; font-size: 1.05rem; color: var(--cdf-blue); }
.aside p, .aside ul { margin: 0 0 0.9rem; font-size: 0.95rem; }
.aside ul { padding-left: 1.1rem; }
.aside li + li { margin-top: 0.3rem; }
.aside .small { font-size: 0.875rem; color: var(--muted); }

/* ── Messages ───────────────────────────────────────────────────── */
.notice { margin: 0 0 1.5rem; padding: 0.9rem 1.1rem; border-left: 4px solid var(--cdf-blue); background: var(--cdf-tint); }
.notice-error { border-color: var(--error); background: var(--error-tint); }
.notice-success { border-color: var(--cdf-green); background: var(--ok-tint); }

/* ── Formulaire ─────────────────────────────────────────────────── */
.form-intro { margin: 0 0 1.75rem; color: var(--muted); }
fieldset { margin: 0 0 2.25rem; padding: 0; border: 0; min-width: 0; }
legend {
  width: 100%;
  margin: 0 0 1.1rem; padding: 0 0 0.45rem;
  border-bottom: 1.5px solid var(--cdf-blue);
  font-size: 1.2rem; font-weight: 700; color: var(--cdf-blue);
}
.row { display: grid; gap: 0 1.25rem; grid-template-columns: minmax(0, 1fr); }
@media (min-width: 36rem) {
  .row-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .row-cp { grid-template-columns: 9rem minmax(0, 1fr); }
  .row-narrow { grid-template-columns: 14rem; }
}

.field { margin: 0 0 1.15rem; }
.field-label { display: block; margin: 0 0 0.35rem; font-weight: 700; font-size: 0.95rem; }
.field-hint { margin: -0.15rem 0 0.4rem; font-size: 0.875rem; color: var(--muted); }

.input {
  display: block; width: 100%;
  min-height: 2.75rem;
  padding: 0.55rem 0.75rem;
  font: inherit; color: inherit;
  background: #fff;
  border: 1px solid var(--field);
  border-radius: var(--radius);
  transition: border-color 0.15s, box-shadow 0.15s;
}
textarea.input { min-height: 5.5rem; resize: vertical; }
select.input {
  appearance: none; -webkit-appearance: none;
  padding-right: 2.5rem;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' fill='none' stroke='%23004A92' stroke-width='2'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 0.85rem center;
}
.input:hover { border-color: var(--cdf-blue); }
.input:focus { outline: none; border-color: var(--cdf-blue); box-shadow: 0 0 0 3px rgba(60, 149, 176, 0.45); }
.input[type="file"] { padding: 0.4rem; min-height: 0; }
.input[type="file"]::file-selector-button {
  margin-right: 0.9rem; padding: 0.45rem 0.9rem;
  font: inherit; font-weight: 700; color: var(--cdf-blue);
  background: var(--cdf-tint); border: 0; border-radius: var(--radius); cursor: pointer;
}

.has-error .input { border-color: var(--error); border-width: 2px; }
.field-error { margin: 0.35rem 0 0; color: var(--error); font-size: 0.9rem; font-weight: 700; }

.check { display: grid; grid-template-columns: 1.25rem minmax(0, 1fr); gap: 0.75rem; align-items: start; margin: 0 0 1.75rem; }
.check input { width: 1.25rem; height: 1.25rem; margin: 0.15rem 0 0; accent-color: var(--cdf-blue); }
.check label { font-size: 0.95rem; }
.check .field-error { grid-column: 2; margin-top: 0; }

.btn {
  display: inline-block;
  padding: 0.8rem 1.6rem;
  font: inherit; font-weight: 700; font-size: 1.02rem;
  color: #fff; background: var(--cdf-blue);
  border: 0; border-radius: var(--radius);
  cursor: pointer; text-decoration: none;
  transition: background-color 0.15s;
}
.btn:hover { background: var(--cdf-navy); color: #fff; }

/* Widget ALTCHA aux couleurs de la charte */
altcha-widget {
  --altcha-color-primary: var(--cdf-blue);
  --altcha-border-color: var(--field);
  --altcha-border-radius: var(--radius);
  --altcha-max-width: 22rem;
  --altcha-color-success: var(--cdf-green);
  display: block; margin: 1.25rem 0 0;
  font-family: var(--sans);
}

/* ── Pages de résultat ──────────────────────────────────────────── */
.result h2 { margin: 0 0 0.75rem; font-size: 1.35rem; color: var(--cdf-blue); }
.result p { max-width: 38rem; }

/* ── Pied de page : cartouche institutionnel ────────────────────── */
.site-footer { background: var(--cdf-navy); color: #fff; font-size: 0.9rem; }
.site-footer .wrap { display: flex; flex-wrap: wrap; align-items: center; gap: 1.25rem 2.5rem; padding-top: 1.75rem; padding-bottom: 1.75rem; }
.site-footer img { display: block; height: 2.75rem; width: auto; }
.site-footer address {
  font-style: normal; line-height: 1.45;
  border-left: 1.5px solid rgba(255, 255, 255, 0.85); padding-left: 1.25rem;
}
.site-footer a { color: #fff; }
.site-footer .service { margin-left: auto; border-left: 1.5px solid rgba(255, 255, 255, 0.85); padding-left: 1.25rem; line-height: 1.45; }
@media (max-width: 40rem) { .site-footer .service { margin-left: 0; } }

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
}