/* ==========================================================================
   ATELIER BRÉNOZ — « La charpente apparente »
   La structure du site est visible comme les poutres d'une charpente :
   marquages de sections, filets épais, données de chantier en mono.
   Anton (display) · Archivo (texte) · Chivo Mono (données)
   Projet démonstratif conçu par Genshi.
   ========================================================================== */

:root {
  --fond: #F0EDE6;
  --papier: #FBFAF6;
  --encre: #24262A;
  --encre-2: #31343A;
  --gris: #6B6B64;
  --bois: #9A6B3F;
  --ocre: #C8862E;
  --ocre-deep: #A86E1F;
  --ligne: rgba(36, 38, 42, 0.16);
  --ombre: 0 18px 44px -22px rgba(36, 38, 42, 0.45);
  --f-display: "Anton", "Arial Narrow", sans-serif;
  --f-body: "Archivo", "Helvetica Neue", Arial, sans-serif;
  --f-mono: "Chivo Mono", ui-monospace, Menlo, monospace;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--f-body);
  background: var(--fond);
  color: var(--encre);
  font-size: 16.5px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

::selection { background: var(--ocre); color: var(--encre); }

img { max-width: 100%; display: block; }
a { color: inherit; }
:focus-visible { outline: 3px solid var(--ocre); outline-offset: 2px; }

/* ---------- Typographie ---------- */

h1, h2, h3, .display {
  font-family: var(--f-display);
  font-weight: 400;
  line-height: 0.98;
  letter-spacing: 0.01em;
  text-transform: uppercase;
  text-wrap: balance;
}

h1 { font-size: clamp(2.8rem, 7vw, 5.6rem); }
h2 { font-size: clamp(1.9rem, 4vw, 3rem); }
h3 { font-size: 1.3rem; letter-spacing: 0.03em; }

h1 .ocre, h2 .ocre { color: var(--ocre); }

p { text-wrap: pretty; }

.lead { font-size: 1.12rem; color: var(--gris); max-width: 38em; }

.mono {
  font-family: var(--f-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--gris);
}

/* ---------- Marquage de section (comme une pièce de charpente) ---------- */

.marquage {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--f-mono);
  font-size: 0.74rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--encre);
}

.marquage::before {
  content: "";
  width: 34px;
  height: 12px;
  background: var(--ocre);
}

/* ---------- Layout ---------- */

.bw { width: min(1240px, 92vw); margin-inline: auto; }

.bsec { padding-block: clamp(56px, 7vw, 100px); border-top: 3px solid var(--encre); }
.bsec--first { border-top: none; }

.bstack > * + * { margin-top: 16px; }

/* ---------- Header ---------- */

.bhd {
  position: sticky;
  top: -1px; /* évite le filet de 1px au-dessus du header sticky */
  z-index: 60;
  background: color-mix(in srgb, var(--fond) 94%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 3px solid var(--encre);
}

.bhd .bw { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding-block: 14px; }

.blogo { text-decoration: none; display: flex; flex-direction: column; line-height: 1; }
.blogo .l-name { font-family: var(--f-display); font-size: 1.5rem; text-transform: uppercase; letter-spacing: 0.04em; }
.blogo .l-name span { color: var(--ocre); }
.blogo .l-sub { font-family: var(--f-mono); font-size: 0.58rem; letter-spacing: 0.18em; text-transform: uppercase; color: var(--gris); margin-top: 5px; }

.bnav { display: flex; align-items: center; gap: 26px; }

.bnav a:not(.bb) {
  text-decoration: none;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--gris);
  padding-block: 6px;
  border-bottom: 3px solid transparent;
  transition: color 0.2s, border-color 0.2s;
}

.bnav a:not(.bb):hover { color: var(--encre); border-bottom-color: var(--ligne); }
.bnav a:not(.bb)[aria-current="page"] { color: var(--encre); border-bottom-color: var(--ocre); }

.bburger { display: none; flex-direction: column; justify-content: center; align-items: center; gap: 5px; width: 44px; height: 44px; background: none; border: none; cursor: pointer; }
.bburger span { width: 24px; height: 3px; background: var(--encre); transition: transform 0.3s, opacity 0.3s; }

/* ---------- Boutons ---------- */

.bb {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-family: var(--f-body);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-decoration: none;
  cursor: pointer;
  padding: 16px 28px;
  background: var(--ocre);
  color: var(--encre);
  border: 3px solid var(--encre);
  border-radius: 0;
  box-shadow: 4px 4px 0 var(--encre);
  transition: transform 0.15s, box-shadow 0.15s, background 0.15s;
}

.bb:hover { transform: translate(-2px, -2px); box-shadow: 6px 6px 0 var(--encre); }
.bb:active { transform: translate(2px, 2px); box-shadow: 0 0 0 var(--encre); }

.bb--ghost { background: var(--papier); }
.bb--sm { padding: 11px 18px; font-size: 0.72rem; box-shadow: 3px 3px 0 var(--encre); }

/* ---------- Fiche chantier ---------- */

.chantier {
  background: var(--papier);
  border: 3px solid var(--encre);
  display: flex;
  flex-direction: column;
  text-decoration: none;
  transition: transform 0.2s, box-shadow 0.2s;
}

.chantier:hover { transform: translate(-3px, -3px); box-shadow: 6px 6px 0 var(--encre); }

.chantier .c-img { aspect-ratio: 3 / 2; overflow: hidden; border-bottom: 3px solid var(--encre); position: relative; }
.chantier .c-img img { width: 100%; height: 100%; object-fit: cover; }

.chantier .c-tag {
  position: absolute;
  top: 0;
  left: 0;
  font-family: var(--f-mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  background: var(--ocre);
  border-right: 3px solid var(--encre);
  border-bottom: 3px solid var(--encre);
  padding: 6px 12px;
}

.chantier .c-body { padding: 18px 20px 20px; }

.chantier h3 { margin-bottom: 12px; }

.cdata { display: grid; gap: 0; }

.cdata-row {
  display: grid;
  grid-template-columns: 92px 1fr;
  gap: 12px;
  padding-block: 6px;
  border-bottom: 1px solid var(--ligne);
  font-family: var(--f-mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  align-items: baseline;
}

.cdata-row:last-child { border-bottom: none; }
.cdata-row .k { color: var(--gris); text-transform: uppercase; }
.cdata-row .v { color: var(--encre); }

/* ---------- Parole de charpentier ---------- */

.parole {
  background: var(--encre);
  color: var(--fond);
  padding: clamp(28px, 4vw, 48px);
  border: 3px solid var(--encre);
  display: grid;
  gap: 14px;
}

.parole .mono { color: var(--ocre); }

.parole .p-quote {
  font-family: var(--f-display);
  font-size: clamp(1.4rem, 2.8vw, 2.1rem);
  line-height: 1.12;
  text-transform: uppercase;
}

.parole .p-sig { font-size: 0.88rem; color: rgba(240, 237, 230, 0.6); }

/* ---------- Bande de stats ---------- */

.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); border: 3px solid var(--encre); background: var(--papier); }

.stat { padding: 20px 22px; border-right: 3px solid var(--encre); display: grid; gap: 4px; }
.stat:last-child { border-right: none; }
.stat .n { font-family: var(--f-display); font-size: clamp(1.8rem, 3vw, 2.6rem); line-height: 1; }
.stat .n em { font-style: normal; color: var(--ocre); }
.stat .l { font-family: var(--f-mono); font-size: 0.66rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--gris); }

@media (max-width: 880px) { .stat { border-right: none; border-bottom: 3px solid var(--encre); } .stat:last-child { border-bottom: none; } }

/* ---------- Formulaires ---------- */

.bf { display: grid; gap: 7px; }

.bf label {
  font-family: var(--f-mono);
  font-size: 0.64rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gris);
}

.bf input, .bf select, .bf textarea {
  font-family: var(--f-body);
  font-size: 1rem;
  color: var(--encre);
  background: var(--papier);
  border: 2px solid var(--encre);
  border-radius: 0;
  padding: 13px 14px;
  width: 100%;
}

.bf input:focus, .bf select:focus, .bf textarea:focus { outline: none; box-shadow: 3px 3px 0 var(--ocre); }

.bf.is-error input, .bf.is-error select { border-color: #B23A22; box-shadow: 3px 3px 0 #B23A22; }

/* choix en grandes tuiles (étape 1 du métré) */
.tuiles { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 14px; }

.tuile {
  background: var(--papier);
  border: 3px solid var(--encre);
  padding: 20px 18px;
  cursor: pointer;
  text-align: left;
  font-family: var(--f-body);
  display: grid;
  gap: 6px;
  transition: transform 0.15s, box-shadow 0.15s, background 0.15s;
}

.tuile:hover { transform: translate(-2px, -2px); box-shadow: 5px 5px 0 var(--encre); }
.tuile.is-on { background: var(--ocre); box-shadow: 5px 5px 0 var(--encre); }
.tuile .t-num { font-family: var(--f-mono); font-size: 0.64rem; letter-spacing: 0.1em; color: var(--gris); }
.tuile.is-on .t-num { color: var(--encre); }
.tuile .t-name { font-family: var(--f-display); font-size: 1.05rem; text-transform: uppercase; }
.tuile .t-desc { font-size: 0.8rem; color: var(--gris); }
.tuile.is-on .t-desc { color: var(--encre-2); }

/* ---------- Étapes du métré ---------- */

.metre-steps { display: flex; border: 3px solid var(--encre); background: var(--papier); }

.mstep {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 13px 16px;
  font-family: var(--f-mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--gris);
  border-right: 3px solid var(--encre);
}

.mstep:last-child { border-right: none; }
.mstep.is-on { background: var(--encre); color: var(--fond); }
.mstep.is-done { background: var(--ocre); color: var(--encre); }

@media (max-width: 720px) { .mstep span.lbl { display: none; } .mstep { justify-content: center; } }

/* récap du métré */
.recap { background: var(--papier); border: 3px solid var(--encre); position: sticky; top: 96px; }
.recap-head { background: var(--encre); color: var(--fond); padding: 12px 18px; font-family: var(--f-display); font-size: 1.05rem; text-transform: uppercase; letter-spacing: 0.04em; }
.recap-body { padding: 16px 18px; display: grid; gap: 0; }
.recap .cdata-row { grid-template-columns: 110px 1fr; }
.recap-est { border-top: 3px solid var(--encre); padding: 16px 18px; }
.recap-est .n { font-family: var(--f-display); font-size: 1.6rem; }
.recap-est .mono { display: block; margin-top: 4px; }

/* ---------- Footer ---------- */

.bft { background: var(--encre); color: rgba(240, 237, 230, 0.85); padding-block: 56px 28px; border-top: 3px solid var(--encre); }

.bft-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 36px; padding-bottom: 36px; border-bottom: 1px solid rgba(240, 237, 230, 0.2); }

.bft h4 { font-family: var(--f-mono); font-size: 0.66rem; font-weight: 400; letter-spacing: 0.18em; text-transform: uppercase; color: rgba(240, 237, 230, 0.5); margin-bottom: 13px; }

.bft ul { list-style: none; display: grid; gap: 7px; font-size: 0.92rem; }
.bft a { text-decoration: none; }
.bft a:hover { text-decoration: underline; }

.bft-brand { font-family: var(--f-display); font-size: 1.6rem; text-transform: uppercase; color: var(--fond); }
.bft-brand span { color: var(--ocre); }

.bft-legal { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 10px 24px; padding-top: 20px; font-size: 0.76rem; color: rgba(240, 237, 230, 0.45); }

/* ---------- Badge démo ---------- */

.g-demo-badge {
  position: fixed;
  left: 14px;
  bottom: 14px;
  z-index: 80;
  font-family: var(--f-mono);
  font-size: 0.62rem;
  letter-spacing: 0.04em;
  color: var(--gris);
  background: color-mix(in srgb, var(--papier) 92%, transparent);
  border: 2px solid var(--encre);
  padding: 5px 11px;
  backdrop-filter: blur(6px);
  pointer-events: none;
  max-width: 70vw;
}

/* ---------- Révélation ---------- */

@media (prefers-reduced-motion: no-preference) {
  .rv { opacity: 0; transform: translateY(18px); transition: opacity 0.65s ease, transform 0.65s ease; }
  .rv.is-in { opacity: 1; transform: none; }
}

/* ---------- Responsive ---------- */

@media (max-width: 880px) {
  .bnav {
    position: fixed;
    inset: 0;
    z-index: 70;
    flex-direction: column;
    justify-content: center;
    gap: 6vh;
    background: var(--fond);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s;
  }
  .bnav a:not(.bb) { font-family: var(--f-display); font-size: 2rem; color: var(--encre); text-transform: uppercase; }
  .bnav.is-open { opacity: 1; pointer-events: auto; }
  .bburger { display: flex; position: relative; z-index: 75; }
  .bburger.is-open span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
  .bburger.is-open span:nth-child(2) { opacity: 0; }
  .bburger.is-open span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }
  .bft-grid { grid-template-columns: 1fr; gap: 28px; }
  .g-demo-badge { display: none; }
}