/* Empreinte — feuille de style partagée par toutes les pages */
:root {
    --bg: #EFF1EA;
    --panel: #FBFCF8;
    --ink: #171B18;
    --ink-soft: #4B534C;
    --ink-faint: #7B8279;
    --accent: #2F5D4F;
    --accent-dark: #1F4238;
    --accent-soft: #E1EAE5;
    --gold: #B98B2E;
    --gold-soft: #F3E8D2;
    --urgent: #A5432F;
    --urgent-soft: #F4E3DD;
    --line: #D8DCD1;
    --shadow: 0 1px 2px rgba(23,27,24,0.04), 0 12px 28px -14px rgba(23,27,24,0.14);
  }

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

  body {
    opacity: 0;
    animation: page-fade-in 0.4s ease-out forwards;
  }
  @keyframes page-fade-in { to { opacity: 1; } }

  body {
    margin: 0;
    background: var(--bg);
    color: var(--ink);
    font-family: 'IBM Plex Sans', sans-serif;
    -webkit-font-smoothing: antialiased;
  }

  .wrap { max-width: 800px; margin: 0 auto; padding: 0 24px; }
  a { color: inherit; }

  /* ---------- Header ---------- */
  header {
    position: sticky; top: 0; z-index: 30;
    background: rgba(239, 241, 234, 0.9);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid transparent;
    transition: border-color 0.25s ease, box-shadow 0.25s ease;
  }
  header.scrolled { border-color: var(--line); box-shadow: 0 4px 18px -14px rgba(23,27,24,0.3); }

  .header-inner {
    max-width: 800px; margin: 0 auto; padding: 14px 24px;
    display: flex; align-items: center; justify-content: space-between; gap: 16px;
  }

  .logo { display: flex; align-items: center; gap: 9px; font-family: 'Fraunces', serif; font-weight: 600; font-size: 1rem; text-decoration: none; flex-shrink: 0; }
  .logo .ring { animation: pulse-ring 3.2s ease-in-out infinite; }

  nav.links { display: flex; gap: 20px; font-size: 0.85rem; color: var(--ink-soft); flex-wrap: wrap; }
  nav.links a { text-decoration: none; position: relative; white-space: nowrap; }
  nav.links a::after {
    content: ''; position: absolute; left: 0; right: 0; bottom: -4px; height: 1px;
    background: var(--accent); transform: scaleX(0); transform-origin: left; transition: transform 0.2s ease;
  }
  nav.links a:hover::after { transform: scaleX(1); }

  .header-actions { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }

  .btn-ghost {
    font-size: 0.82rem; font-weight: 500; color: var(--ink-soft); text-decoration: none;
    padding: 8px 12px; border: 1px solid var(--line); border-radius: 3px; transition: border-color 0.15s ease, color 0.15s ease;
    white-space: nowrap;
  }
  .btn-ghost:hover { border-color: var(--accent); color: var(--accent-dark); }

  .header-cta {
    font-size: 0.82rem; font-weight: 500; background: var(--accent); color: #fff;
    padding: 9px 15px; border-radius: 3px; text-decoration: none; transition: background 0.15s ease, transform 0.15s ease;
    white-space: nowrap;
  }
  .header-cta:hover { background: var(--accent-dark); transform: translateY(-1px); }

  @media (max-width: 900px) { nav.links { display: none; } }
  @media (max-width: 460px) { .btn-ghost { display: none; } }

  /* ---------- Hero ---------- */
  .hero { padding: 84px 0 60px; display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 40px; align-items: center; }
  .hero-copy > * { opacity: 0; transform: translateY(14px); animation: rise 0.7s cubic-bezier(.2,.7,.2,1) forwards; }
  .hero-copy .mark { animation-delay: 0.02s; }
  .hero-copy h1 { animation-delay: 0.12s; }
  .hero-copy .lede { animation-delay: 0.22s; }
  .hero-copy .cta-row { animation-delay: 0.32s; }
  @keyframes rise { to { opacity: 1; transform: translateY(0); } }

  .mark {
    display: inline-flex; align-items: center; gap: 8px; font-size: 0.83rem; color: var(--accent-dark);
    background: var(--accent-soft); padding: 6px 12px 6px 8px; border-radius: 20px; margin-bottom: 26px;
  }

  h1 { font-family: 'Fraunces', serif; font-weight: 500; font-size: clamp(2.05rem, 4.4vw, 2.85rem); line-height: 1.12; letter-spacing: -0.01em; margin: 0 0 20px; }
  .lede { font-size: 1.06rem; line-height: 1.62; color: var(--ink-soft); max-width: 46ch; margin: 0 0 32px; }
  .cta-row { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }

  .cta {
    display: inline-block; background: var(--accent); color: #fff; text-decoration: none;
    padding: 13px 26px; border-radius: 3px; font-size: 0.95rem; font-weight: 500; border: none; cursor: pointer;
    transition: background 0.15s ease, transform 0.15s ease, box-shadow 0.15s ease;
  }
  .cta:hover { background: var(--accent-dark); transform: translateY(-1px); box-shadow: 0 8px 20px -10px rgba(31,66,56,0.55); }
  .cta:active { transform: translateY(0); }
  .cta:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
  .cta:disabled { opacity: 0.45; cursor: not-allowed; transform: none; box-shadow: none; }
  .cta.secondary { background: transparent; color: var(--accent-dark); border: 1px solid var(--accent); }
  .cta.secondary:hover { background: var(--accent-soft); }

  .ghost-link { font-size: 0.9rem; color: var(--ink-soft); text-decoration: none; border-bottom: 1px solid var(--line); padding-bottom: 1px; }
  .ghost-link:hover { color: var(--ink); border-color: var(--ink-soft); }

  .hero-art { display: flex; align-items: center; justify-content: center; }
  @keyframes pulse-ring { 0%, 100% { opacity: 0.35; } 50% { opacity: 0.85; } }
  .r1 { animation: pulse-ring 3.6s ease-in-out infinite; }
  .r2 { animation: pulse-ring 3.6s ease-in-out infinite 0.5s; }
  .r3 { animation: pulse-ring 3.6s ease-in-out infinite 1s; }
  @keyframes rotate-slow { to { transform: rotate(360deg); } }
  .arcs { animation: rotate-slow 40s linear infinite; transform-origin: 100px 100px; }

  /* ---------- Trust strip ---------- */
  .trust-strip { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); padding: 24px 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
  .trust-item { display: flex; align-items: center; gap: 10px; font-size: 0.85rem; color: var(--ink-soft); }
  .trust-item svg { flex-shrink: 0; }
  .trust-item strong { color: var(--ink); font-weight: 600; }

  @media (max-width: 640px) {
    .trust-strip { grid-template-columns: 1fr; }
    .hero { grid-template-columns: 1fr; }
    .hero-art { order: -1; max-width: 200px; margin: 0 auto; }
  }

  /* ---------- Reveal ---------- */
  .reveal { opacity: 0; transform: translateY(18px); transition: opacity 0.6s cubic-bezier(.2,.7,.2,1), transform 0.6s cubic-bezier(.2,.7,.2,1); }
  .reveal.visible { opacity: 1; transform: translateY(0); }

  /* ---------- Section head ---------- */
  .section-head { padding: 64px 0 8px; }
  .section-head .kicker { font-size: 0.83rem; color: var(--gold); font-weight: 600; margin-bottom: 10px; }
  .section-head h2 { font-family: 'Fraunces', serif; font-weight: 500; font-size: 1.6rem; margin: 0 0 14px; }
  .section-head p { color: var(--ink-soft); max-width: 56ch; line-height: 1.6; margin: 0; }

  /* ---------- Steps ---------- */
  .steps { padding: 36px 0 56px; position: relative; }
  .steps::before { content: ''; position: absolute; left: 19px; top: 22px; bottom: 22px; width: 1px; background: var(--line); }
  .step { display: grid; grid-template-columns: 40px 1fr; gap: 20px; padding: 22px 0; }
  .step .num {
    width: 40px; height: 40px; border-radius: 50%; background: var(--panel); border: 1px solid var(--line);
    display: flex; align-items: center; justify-content: center; font-family: 'Fraunces', serif; font-size: 1.05rem;
    color: var(--accent); position: relative; z-index: 1; transition: border-color 0.2s ease, transform 0.2s ease;
  }
  .step:hover .num { border-color: var(--accent); transform: scale(1.06); }
  .step h3 { font-size: 1.02rem; font-weight: 600; margin: 6px 0 8px; }
  .step p { font-size: 0.93rem; line-height: 1.6; color: var(--ink-soft); margin: 0; }

  /* ---------- Panels (dossier + statut) ---------- */
  .panel { background: var(--panel); border: 1px solid var(--line); border-radius: 6px; padding: 40px; margin: 24px 0 60px; box-shadow: var(--shadow); }
  .panel h2 { font-family: 'Fraunces', serif; font-weight: 500; font-size: 1.4rem; margin: 0 0 8px; }
  .panel > .panel-intro { color: var(--ink-soft); font-size: 0.94rem; margin: 0 0 28px; line-height: 1.55; }

  .field { margin-bottom: 20px; }
  .field label { display: block; font-size: 0.85rem; font-weight: 500; margin-bottom: 7px; }
  .field .hint { font-weight: 400; color: var(--ink-faint); }

  .field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
  @media (max-width: 560px) { .field-row { grid-template-columns: 1fr; } }

  .dropzone {
    border: 1.5px dashed var(--line); border-radius: 5px; padding: 22px; text-align: center; font-size: 0.88rem;
    color: var(--ink-soft); background: #fff; transition: border-color 0.2s ease, background 0.2s ease; cursor: pointer; position: relative;
  }
  .dropzone.drag { border-color: var(--accent); background: var(--accent-soft); }
  .dropzone input { position: absolute; inset: 0; opacity: 0; cursor: pointer; }
  .dropzone .fname { font-weight: 600; color: var(--ink); margin-top: 4px; }

  .field input[type=email], .field input[type=text] {
    width: 100%; padding: 11px 13px; background: #fff; border: 1px solid var(--line); border-radius: 4px;
    color: var(--ink); font-family: inherit; font-size: 0.95rem; transition: border-color 0.15s ease;
  }
  .field select {
    width: 100%; padding: 11px 13px; background: #fff; border: 1px solid var(--line); border-radius: 4px;
    color: var(--ink); font-family: inherit; font-size: 0.95rem; transition: border-color 0.15s ease;
  }
  .field select:focus, .field textarea:focus { border-color: var(--accent); }
  .field input:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }
  .field input:focus { border-color: var(--accent); }

  .submit-row { display: flex; align-items: center; gap: 16px; margin-top: 24px; flex-wrap: wrap; }
  #status, #statusCheck { font-size: 0.88rem; color: var(--ink-soft); min-height: 1.2em; }
  #status.ok, #statusCheck.ok { color: var(--accent); }
  #status.err, #statusCheck.err { color: var(--urgent); }
  #status.warn, #statusCheck.warn { color: var(--gold); }

  #hashOut, #caseIdOut {
    font-family: ui-monospace, 'SFMono-Regular', monospace; font-size: 0.82rem; color: var(--accent-dark);
    background: var(--accent-soft); display: inline-block; padding: 7px 11px; border-radius: 4px; margin-top: 12px;
    word-break: break-all; opacity: 0; transform: translateY(4px); transition: opacity 0.3s ease, transform 0.3s ease;
  }
  #hashOut.show, #caseIdOut.show { opacity: 1; transform: translateY(0); }

  .case-callout {
    margin-top: 20px; padding: 16px 18px; background: var(--gold-soft); border-radius: 5px; font-size: 0.88rem;
    line-height: 1.55; display: none;
  }
  .case-callout.show { display: block; }
  .case-callout strong { font-family: ui-monospace, monospace; font-size: 1rem; }

  .progress { height: 3px; background: var(--line); border-radius: 2px; overflow: hidden; margin-top: 10px; display: none; }
  .progress.active { display: block; }
  .progress-bar { height: 100%; width: 30%; background: var(--accent); animation: sweep 1.1s ease-in-out infinite; }
  @keyframes sweep { 0% { transform: translateX(-100%); } 100% { transform: translateX(330%); } }

  .status-result { margin-top: 22px; padding: 18px 20px; border-radius: 5px; border: 1px solid var(--line); display: none; }
  .status-result.show { display: block; }
  .status-result.pending { background: var(--accent-soft); border-color: transparent; }
  .status-result.match { background: var(--urgent-soft); border-color: transparent; }
  .status-result h4 { margin: 0 0 6px; font-size: 0.95rem; }
  .status-result ul { margin: 10px 0 0; padding-left: 18px; font-size: 0.85rem; }

  /* ---------- Emergency banner ---------- */
  .emergency {
    background: var(--urgent-soft); border: 1px solid #E3C4B9; border-radius: 6px; padding: 22px 26px;
    display: flex; align-items: flex-start; gap: 16px; margin: 8px 0 40px;
  }
  .emergency svg { flex-shrink: 0; margin-top: 2px; }
  .emergency h4 { margin: 0 0 6px; font-size: 1rem; }
  .emergency p { margin: 0; font-size: 0.9rem; line-height: 1.55; color: var(--ink-soft); }
  .emergency strong { color: var(--urgent); }

  /* ---------- Resource cards ---------- */
  .resource-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; padding: 8px 0 56px; }
  .resource-card { border: 1px solid var(--line); border-radius: 5px; padding: 22px; background: var(--panel); transition: transform 0.2s ease, box-shadow 0.2s ease; }
  .resource-card:hover { transform: translateY(-2px); box-shadow: var(--shadow); }
  .resource-card .num-badge {
    display: inline-block; font-family: 'Fraunces', serif; font-size: 1.3rem; color: var(--accent); background: var(--accent-soft);
    padding: 4px 12px; border-radius: 4px; margin-bottom: 12px;
  }
  .resource-card h4 { margin: 0 0 8px; font-size: 0.98rem; }
  .resource-card p { margin: 0; font-size: 0.87rem; line-height: 1.55; color: var(--ink-soft); }
  .resource-card a.link-out { display: inline-block; margin-top: 10px; font-size: 0.83rem; color: var(--accent-dark); border-bottom: 1px solid var(--line); text-decoration: none; }
  .resource-card a.link-out:hover { border-color: var(--accent-dark); }

  @media (max-width: 640px) { .resource-grid { grid-template-columns: 1fr; } }

  /* ---------- Traces / checklist ---------- */
  .checklist { padding: 8px 0 56px; }
  .checklist-item { display: grid; grid-template-columns: 28px 1fr; gap: 14px; padding: 16px 0; border-bottom: 1px solid var(--line); transition: transform 0.2s ease; }
  .checklist-item:last-child { border-bottom: none; }
  .checklist-item:hover { transform: translateX(4px); }
  .checklist-item .ico {
    width: 28px; height: 28px; border-radius: 50%; background: var(--accent-soft); display: flex; align-items: center;
    justify-content: center; flex-shrink: 0; transition: background 0.2s ease;
  }
  .checklist-item:hover .ico { background: var(--gold-soft); }
  .checklist-item h4 { margin: 0 0 6px; font-size: 0.95rem; }
  .checklist-item p { margin: 0; font-size: 0.88rem; line-height: 1.58; color: var(--ink-soft); }

  /* ---------- About / partners ---------- */
  .about-text { padding: 8px 0 56px; }
  .about-text p { color: var(--ink-soft); line-height: 1.68; font-size: 0.98rem; max-width: 62ch; margin: 0 0 18px; }

  .partner-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; padding: 8px 0 56px; }
  .partner-card { border: 1px solid var(--line); border-radius: 5px; padding: 20px; background: var(--panel); transition: transform 0.2s ease, box-shadow 0.2s ease; }
  .partner-card:hover { transform: translateY(-2px); box-shadow: var(--shadow); }
  .partner-card h4 { margin: 0 0 6px; font-size: 0.94rem; }
  .partner-card p { margin: 0; font-size: 0.85rem; line-height: 1.55; color: var(--ink-soft); }
  @media (max-width: 640px) { .partner-grid { grid-template-columns: 1fr; } }

  /* ---------- Reassure grid ---------- */
  .reassure-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; padding: 8px 0 40px; }
  .reassure-item { display: flex; gap: 14px; padding: 20px; border: 1px solid var(--line); border-radius: 5px; background: var(--panel); transition: transform 0.2s ease, box-shadow 0.2s ease; }
  .reassure-item:hover { transform: translateY(-2px); box-shadow: var(--shadow); }
  .reassure-item svg { flex-shrink: 0; margin-top: 2px; }
  .reassure-item h4 { margin: 0 0 6px; font-size: 0.95rem; font-weight: 600; }
  .reassure-item p { margin: 0; font-size: 0.88rem; line-height: 1.55; color: var(--ink-soft); }
  @media (max-width: 640px) { .reassure-grid { grid-template-columns: 1fr; } }

  /* ---------- Privacy policy text ---------- */
  .policy-text { padding: 8px 0 56px; }
  .policy-text h4 { font-size: 1rem; margin: 26px 0 8px; }
  .policy-text h4:first-child { margin-top: 0; }
  .policy-text p, .policy-text li { color: var(--ink-soft); font-size: 0.92rem; line-height: 1.62; }
  .policy-text ul { padding-left: 20px; margin: 8px 0; }

  /* ---------- FAQ ---------- */
  .faq { padding: 8px 0 72px; }
  .faq-item { border-bottom: 1px solid var(--line); }
  .faq-q {
    width: 100%; text-align: left; background: none; border: none; padding: 20px 0; font-size: 0.98rem; font-weight: 500;
    color: var(--ink); cursor: pointer; display: flex; justify-content: space-between; align-items: center; gap: 16px; font-family: inherit;
  }
  .faq-q .plus { flex-shrink: 0; width: 18px; height: 18px; position: relative; }
  .faq-q .plus::before, .faq-q .plus::after { content: ''; position: absolute; background: var(--accent); transition: transform 0.25s ease; }
  .faq-q .plus::before { top: 8px; left: 0; width: 18px; height: 1.6px; }
  .faq-q .plus::after { left: 8px; top: 0; width: 1.6px; height: 18px; }
  .faq-item.open .plus::after { transform: rotate(90deg); }
  .faq-a { display: grid; grid-template-rows: 0fr; transition: grid-template-rows 0.3s ease; }
  .faq-item.open .faq-a { grid-template-rows: 1fr; }
  .faq-a-inner { overflow: hidden; }
  .faq-a p { margin: 0 0 20px; color: var(--ink-soft); font-size: 0.92rem; line-height: 1.6; max-width: 58ch; }

  /* ---------- Footer ---------- */
  footer { border-top: 1px solid var(--line); padding: 36px 0 44px; }
  .footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 24px; margin-bottom: 28px; }
  .footer-col h5 { font-size: 0.82rem; font-weight: 600; margin: 0 0 12px; color: var(--ink); }
  .footer-col a { display: block; font-size: 0.85rem; color: var(--ink-soft); text-decoration: none; margin-bottom: 9px; }
  .footer-col a:hover { color: var(--ink); }
  .footer-col p { font-size: 0.85rem; color: var(--ink-soft); line-height: 1.55; margin: 0; max-width: 32ch; }
  .footer-bottom { border-top: 1px solid var(--line); padding-top: 20px; font-size: 0.8rem; color: var(--ink-faint); display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; }
  @media (max-width: 640px) { .footer-grid { grid-template-columns: 1fr; } }

  canvas { display: none; }

  @media (prefers-reduced-motion: reduce) {
    body { animation: none !important; opacity: 1 !important; }
    .hero-copy > *, .reveal { animation: none !important; opacity: 1 !important; transform: none !important; transition: none !important; }
    .ring, .arcs, .progress-bar { animation: none !important; }
  }