@font-face { font-family: "IBM Plex Sans"; src: url("fonts/ibm-plex-sans-400.woff2") format("woff2"); font-weight: 400; font-style: normal; font-display: swap; }
@font-face { font-family: "IBM Plex Sans"; src: url("fonts/ibm-plex-sans-500.woff2") format("woff2"); font-weight: 500; font-style: normal; font-display: swap; }
@font-face { font-family: "IBM Plex Sans"; src: url("fonts/ibm-plex-sans-600.woff2") format("woff2"); font-weight: 600; font-style: normal; font-display: swap; }
@font-face { font-family: "IBM Plex Mono"; src: url("fonts/ibm-plex-mono-400.woff2") format("woff2"); font-weight: 400; font-style: normal; font-display: swap; }

:root {
  --papier: #FFFFFF;
  --encre: #15202B;
  --gris: #5B6670;
  --filet: #D5DAE0;
  --surface: #F3F5F7;
  --sceau: #1D4ED8;
  --sceau-fond: #E8EEFB;
  --valide: #15803D;
  --expire: #B45309;
  --r: 4px;
  --sans: "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;
  color-scheme: light;
}

*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--papier);
  color: var(--encre);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.55;
}
h1, h2, p, ul { margin: 0; }
a { color: var(--sceau); text-underline-offset: 3px; }
a:focus-visible, button:focus-visible, input:focus-visible {
  outline: 2px solid var(--sceau);
  outline-offset: 2px;
}

.cadre { max-width: 1180px; margin: 0 auto; padding-left: 16px; padding-right: 16px; }
.masque {
  position: absolute; width: 1px; height: 1px; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap;
}

/* En-tete */
.entete { border-bottom: 1px solid var(--filet); }
.entete-in { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 64px; }
.marque { color: var(--encre); text-decoration: none; font-weight: 600; }
.entete nav { display: flex; gap: 24px; }
.entete nav a { color: var(--encre); text-decoration: none; font-size: 15px; }
.entete nav a:hover { color: var(--sceau); text-decoration: underline; }

/* Boutons */
.bouton {
  font: inherit; font-weight: 500; font-size: 16px; line-height: 1.2;
  padding: 12px 18px; border-radius: var(--r); cursor: pointer;
  white-space: nowrap;
}
.bouton:active { transform: translateY(1px); }
.bouton-principal { background: var(--sceau); color: var(--papier); border: 1px solid var(--sceau); }
.bouton-principal:hover { text-decoration: underline; text-underline-offset: 3px; }
.bouton-secondaire { background: var(--papier); color: var(--encre); border: 1px solid var(--encre); }
.bouton-secondaire:hover { background: var(--surface); }
.lien-bouton {
  font: inherit; font-size: 14px; background: none; border: 0; padding: 4px 0;
  color: var(--sceau); text-decoration: underline; text-underline-offset: 3px; cursor: pointer;
}
.actions { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 16px; }
.aide { font-size: 14px; color: var(--gris); }

/* Ouverture */
.ouverture { display: grid; gap: 32px; padding-top: 32px; padding-bottom: 48px; }
.ouverture-texte { order: 2; display: grid; gap: 20px; align-content: start; }
h1 {
  font-size: clamp(30px, 3vw, 40px); font-weight: 600; letter-spacing: -0.01em;
  line-height: 1.1; text-wrap: balance;
}
.chapo { font-size: 17px; max-width: 34em; }

/* Formulaire de demonstration */
.demo {
  order: 1;
  display: grid; gap: 16px;
  border: 1px solid var(--filet); border-radius: var(--r);
  padding: 20px;
}
.demo-titre { font-weight: 600; }
.demo-note { font-size: 14px; color: var(--gris); margin-top: -8px; }
.champ { display: grid; gap: 6px; }
label { font-size: 15px; font-weight: 500; }
input[type="text"], input[type="tel"], input[type="email"] {
  font: inherit; color: var(--encre); background: var(--papier);
  border: 1px solid var(--gris); border-radius: var(--r);
  padding: 10px 12px; width: 100%; min-height: 44px;
}
.case { display: grid; grid-template-columns: 22px 1fr; gap: 12px; align-items: start; }
.case input { width: 20px; height: 20px; margin: 2px 0 0; accent-color: var(--sceau); cursor: pointer; }
.case label { font-weight: 400; font-size: 15px; cursor: pointer; }
.demo .bouton { justify-self: start; }
.demo-retour { font-size: 14px; color: var(--gris); min-height: 1.55em; }
.demo-retour:empty { display: none; }

/* Registre */
.registre { background: var(--surface); padding: 48px 0; }
h2 { font-size: 24px; font-weight: 600; line-height: 1.25; }
.registre-note { margin-top: 8px; color: var(--gris); font-size: 14px; max-width: 72ch; }
.impression-entete { display: none; }
.table-registre { width: 100%; border-collapse: collapse; margin-top: 24px; font-size: 15px; }
.table-registre th {
  text-align: left; font-weight: 500; font-size: 14px; color: var(--gris);
  padding: 8px 12px; border-bottom: 1px solid var(--encre);
}
.table-registre td { padding: 12px; border-bottom: 1px solid var(--filet); vertical-align: top; }
.mono { font-family: var(--mono); font-size: 14px; font-variant-numeric: tabular-nums; }
.etat-valide { color: var(--valide); font-weight: 500; }
.etat-expire { color: var(--expire); font-weight: 500; }
.table-registre tbody tr { transition: background-color 1.2s ease-out; }
.table-registre tbody tr.nouvelle { background: var(--sceau-fond); transition: none; }
.registre-vide { margin-top: 16px; padding: 16px; border: 1px dashed var(--filet); background: var(--papier); color: var(--gris); }
.registre-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 16px; margin-top: 24px; }

/* Mentions */
.mentions { padding-top: 56px; padding-bottom: 24px; }
.liste-mentions { list-style: none; padding: 0; margin-top: 20px; border-top: 1px solid var(--encre); max-width: 760px; }
.liste-mentions li { padding: 14px 0; border-bottom: 1px solid var(--filet); }
.mention { font-weight: 500; }
.ref { display: block; font-size: 14px; color: var(--gris); margin-top: 2px; }

/* Prix */
.prix { padding-top: 40px; padding-bottom: 48px; display: grid; gap: 8px; }
.prix-montant { font-size: 40px; font-weight: 600; line-height: 1.15; letter-spacing: -0.01em; }
.prix-detail { max-width: 60ch; }
.prix .actions { margin-top: 16px; }

/* Perimetre et pied */
.perimetre { padding-bottom: 32px; }
.perimetre p { border-top: 1px solid var(--filet); padding-top: 24px; font-size: 14px; color: var(--gris); max-width: 72ch; }
.pied { border-top: 1px solid var(--filet); padding: 20px 0 32px; font-size: 14px; }

/* Sas email */
.sas {
  border: 1px solid var(--filet); border-radius: var(--r); padding: 24px;
  width: min(440px, calc(100vw - 32px)); color: var(--encre); background: var(--papier);
}
.sas::backdrop { background: rgba(21, 32, 43, 0.45); }
.sas form, .sas-merci { display: grid; gap: 16px; }
.sas h2 { font-size: 22px; }
.sas-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.erreur {
  font-size: 14px; color: var(--encre);
  border-left: 3px solid var(--sceau); padding: 2px 0 2px 10px; margin-top: 4px;
}
input[aria-invalid="true"] { border-color: var(--sceau); border-width: 2px; padding: 9px 11px; }

/* Page mentions legales */
.legal { max-width: 720px; margin: 0 auto; padding: 40px 16px 56px; }
.legal h1 { margin-bottom: 24px; }
.legal h2 { font-size: 20px; margin-top: 28px; margin-bottom: 8px; }
.legal p { margin-bottom: 12px; max-width: 70ch; }
.legal code { font-family: var(--mono); font-size: 14px; background: var(--surface); padding: 1px 4px; border-radius: var(--r); }
.legal .retour { margin-top: 28px; }

/* Telephone : registre en deux etages */
@media (max-width: 759px) {
  .entete nav { gap: 16px; }
  .entete nav a:first-child { display: none; }
  .table-registre thead { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
  .table-registre, .table-registre tbody { display: block; }
  .table-registre tbody tr {
    display: grid; grid-template-columns: minmax(0, 1fr) auto; column-gap: 16px; row-gap: 4px;
    padding: 12px 8px; border-bottom: 1px solid var(--filet);
  }
  .table-registre td { display: block; padding: 0; border: 0; }
  .table-registre .c-duree, .table-registre .c-expire, .table-registre .c-empreinte { display: none; }
  .table-registre .c-num { grid-column: 1; grid-row: 1; }
  .table-registre .c-heure { grid-column: 2; grid-row: 1; text-align: right; white-space: nowrap; }
  .table-registre .c-origine { grid-column: 1; grid-row: 2; color: var(--gris); font-size: 14px; }
  .table-registre .c-etat { grid-column: 2; grid-row: 2; text-align: right; font-size: 14px; white-space: nowrap; align-self: end; }
}

@media (min-width: 900px) {
  .cadre { padding-left: 32px; padding-right: 32px; }
  .ouverture { grid-template-columns: 1.6fr 1fr; gap: 40px; padding-top: 56px; padding-bottom: 64px; align-items: start; }
  .ouverture-texte { order: 0; padding-top: 8px; }
  .demo { order: 0; padding: 24px; }
  .registre { padding: 56px 0; }
}

@media (prefers-reduced-motion: reduce) {
  .table-registre tbody tr { transition: none; }
  .bouton:active { transform: none; }
}