/* ============================================================
   SEB — Vitrine publique (seb-boyaux.fr)
   Raccord charte appli : Plus Jakarta Sans, bleu encre #1f6feb
   (jour) / ambre atelier #f0a020 (nuit, via prefers-color-scheme).
   Zéro JavaScript — CSP stricte respectée.
   ============================================================ */

:root {
  --accent: #1f6feb;
  --accent-dark: #1a5fd0;
  --on-accent: #ffffff;
  --ink: #0f2742;
  --ink-soft: #5b6b7f;
  --ink-faint: #8a97a6;
  --paper: #f4f7fb;
  --card: #ffffff;
  --alt: #eef3f9;          /* sections alternées */
  --line: #e3e9f0;
  --line-strong: #cfd9e4;
  --warm: #b06850;         /* terracotta boyau — bande calibres, accents chauds */
  --warm-ink: #8a4a36;
  --sh-card: 0 1px 3px hsl(215 28% 22% / .06), 0 8px 20px -10px hsl(215 28% 22% / .14);
  --sh-pop: 0 8px 24px -6px hsl(215 28% 22% / .18), 0 2px 6px hsl(215 28% 22% / .08);
  --r-md: 12px; --r-lg: 16px;
  --font: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --accent: #f0a020;
    --accent-dark: #d98e10;
    --on-accent: #1b1e23;
    --ink: #e9e7e2;
    --ink-soft: #a3a9b2;
    --ink-faint: #767c85;
    --paper: #14161a;
    --card: #1c1f24;
    --alt: #181b20;
    --line: #2c313a;
    --line-strong: #3a414b;
    --warm: #c98a6a;
    --warm-ink: #d9a184;
    --sh-card: 0 2px 10px rgba(0,0,0,.45);
    --sh-pop: 0 10px 28px rgba(0,0,0,.55);
  }
}

/* ---------- Base ---------- */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.6;
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3 { margin: 0; letter-spacing: -0.015em; line-height: 1.15; }
h2 { font-size: clamp(1.5rem, 3.2vw, 2.1rem); font-weight: 800; }
h3 { font-size: 1.05rem; font-weight: 700; }
p { margin: 0; }

.container { max-width: 1120px; margin-inline: auto; padding-inline: clamp(1rem, 4vw, 2rem); }

.eyebrow {
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--warm-ink);
  margin-bottom: 0.7rem;
}
.section { padding-block: clamp(3rem, 7vw, 5rem); }
.section-alt { background: var(--alt); }
.section-sub { color: var(--ink-soft); max-width: 46rem; margin-top: 0.6rem; }

/* ---------- Boutons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem;
  padding: 0.6rem 1.15rem;
  border-radius: 10px;
  border: 1px solid transparent;
  font-family: inherit; font-size: 0.95rem; font-weight: 600;
  cursor: pointer; white-space: nowrap;
}
.btn:hover { text-decoration: none; }
.btn-primary {
  background: var(--accent); color: var(--on-accent);
  box-shadow: 0 2px 10px -2px color-mix(in srgb, var(--accent) 45%, transparent);
}
.btn-primary:hover { background: var(--accent-dark); }
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--line-strong); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }
.btn-lg { padding: 0.8rem 1.5rem; font-size: 1rem; }
a:focus-visible, .btn:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 35%, transparent);
  border-radius: 8px;
}

/* ---------- En-tête ---------- */
.site-head {
  position: sticky; top: 0; z-index: 20;
  background: color-mix(in srgb, var(--card) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.head-in { display: flex; align-items: center; gap: 1.5rem; padding-block: 0.65rem; }
.brand img { height: 42px; width: auto; background: #fff; border-radius: 8px; padding: 3px 8px; }
.head-nav { display: flex; gap: 1.4rem; margin-inline: auto; }
.head-nav a { color: var(--ink-soft); font-weight: 600; font-size: 0.92rem; }
.head-nav a:hover { color: var(--accent); text-decoration: none; }
.head-cta { display: flex; align-items: center; gap: 1rem; }
.head-tel { font-family: var(--mono); font-size: 0.88rem; font-weight: 500; color: var(--ink-soft); }

/* ---------- Héros ---------- */
.hero { overflow: hidden; }
.hero-in {
  display: grid; grid-template-columns: 1.05fr 0.95fr; gap: clamp(2rem, 5vw, 4rem);
  align-items: center; padding-block: clamp(3rem, 7vw, 5.5rem);
}
.hero-txt h1 { font-size: clamp(1.9rem, 4.4vw, 3rem); font-weight: 800; }
.lede { color: var(--ink-soft); font-size: 1.05rem; margin-top: 1.1rem; max-width: 34rem; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 0.8rem; margin-top: 1.6rem; }
.hero-trust {
  font-family: var(--mono); font-size: 0.75rem; letter-spacing: 0.04em;
  color: var(--ink-faint); margin-top: 1.5rem;
}

.hero-photos { position: relative; min-height: 380px; }
.ph {
  margin: 0; background: #fff; border-radius: var(--r-lg);
  box-shadow: var(--sh-pop); overflow: hidden; border: 1px solid var(--line);
}
.ph img { width: 100%; height: 100%; object-fit: cover; }
.ph-main { position: absolute; inset: 8% 6% 8% 10%; rotate: -1.5deg; }
.ph-a { position: absolute; top: -4%; right: -2%; width: 38%; aspect-ratio: 1; rotate: 2.5deg; }
.ph-b { position: absolute; bottom: -6%; left: 0; width: 34%; aspect-ratio: 1; rotate: -3deg; }

/* ---------- Bande calibres (signature) ---------- */
.calibres {
  background: var(--warm); color: #fff;
  overflow: hidden; white-space: nowrap;
  padding-block: 0.55rem;
  border-block: 1px solid color-mix(in srgb, var(--warm) 70%, black);
}
.cal-track {
  display: inline-flex; width: max-content;
  font-family: var(--mono); font-size: 0.78rem; font-weight: 500;
  text-transform: uppercase; letter-spacing: 0.12em;
  animation: cal-scroll 70s linear infinite;
}
@keyframes cal-scroll { to { transform: translateX(-50%); } }

/* ---------- La gamme ---------- */
.grid-gamme {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1.1rem; margin-top: 2rem;
}
.g-card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--r-lg);
  overflow: hidden; box-shadow: var(--sh-card);
  border-top: 3px solid var(--cat, var(--line-strong));
  transition: translate 0.18s ease, box-shadow 0.18s ease;
}
.g-card:hover { translate: 0 -3px; box-shadow: var(--sh-pop); }
.g-ph { margin: 0; background: #fff; aspect-ratio: 4 / 3; }
.g-ph img { width: 100%; height: 100%; object-fit: contain; padding: 0.6rem; }
.g-body { padding: 0.9rem 1rem 1.1rem; }
.g-body p { color: var(--ink-soft); font-size: 0.88rem; margin-top: 0.35rem; }
.g-more {
  display: flex; align-items: center;
  background: color-mix(in srgb, var(--accent) 7%, var(--card));
  border-top-color: var(--accent);
}
.g-more:hover { text-decoration: none; }
.g-more .g-body h3 { color: var(--ink); }
.g-link { display: inline-block; color: var(--accent); font-weight: 700; font-size: 0.92rem; margin-top: 0.8rem; }

/* ---------- L'entreprise ---------- */
.maison-in { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: clamp(2rem, 5vw, 4rem); align-items: center; }
.maison-txt p { color: var(--ink-soft); margin-top: 1rem; }
.maison-txt h2 { margin-bottom: 0.2rem; }
.facts { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin: 0; }
.fact {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--r-md);
  padding: 1.2rem 1.3rem; box-shadow: var(--sh-card);
}
.fact dt { font-family: var(--mono); font-size: 1.6rem; font-weight: 700; color: var(--accent); letter-spacing: -0.02em; }
.fact dd { margin: 0.2rem 0 0; color: var(--ink-soft); font-size: 0.85rem; }

/* ---------- Étapes + CTA ---------- */
.steps {
  list-style: none; padding: 0; margin: 2rem 0 0;
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.1rem;
}
.step {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--r-lg);
  padding: 1.4rem 1.4rem 1.5rem; box-shadow: var(--sh-card); position: relative;
}
.step-n {
  display: inline-grid; place-items: center;
  width: 2rem; height: 2rem; border-radius: 50%;
  background: color-mix(in srgb, var(--accent) 12%, transparent);
  color: var(--accent); font-family: var(--mono); font-weight: 700;
  margin-bottom: 0.8rem;
}
.step p { color: var(--ink-soft); font-size: 0.92rem; margin-top: 0.4rem; }

.cta-band {
  margin-top: 2.5rem;
  background: color-mix(in srgb, var(--accent) 8%, var(--card));
  border: 1px solid color-mix(in srgb, var(--accent) 25%, var(--line));
  border-radius: var(--r-lg);
  padding: clamp(1.4rem, 4vw, 2.2rem);
  display: flex; align-items: center; justify-content: space-between; gap: 1.5rem; flex-wrap: wrap;
}
.cta-band h3 { font-size: 1.25rem; }
.cta-band p { color: var(--ink-soft); margin-top: 0.3rem; max-width: 34rem; }
.cta-btns { display: flex; gap: 0.8rem; flex-wrap: wrap; }

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.1rem; margin-top: 2rem; }
.c-tile {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--r-lg);
  padding: 1.3rem 1.4rem; box-shadow: var(--sh-card);
}
.c-tile h3 { font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--ink-faint); font-weight: 700; }
.c-tile p { margin-top: 0.55rem; font-weight: 500; }
.c-tile a { font-weight: 600; }

/* ---------- Pied de page ---------- */
.site-foot { border-top: 1px solid var(--line); background: var(--card); padding-block: 2.5rem 2rem; }
.foot-top { display: flex; align-items: center; justify-content: space-between; gap: 1rem; flex-wrap: wrap; }
.foot-logo { height: 36px; width: auto; background: #fff; border-radius: 8px; padding: 3px 8px; }
.foot-legal { margin-top: 1.6rem; border-top: 1px solid var(--line); padding-top: 1.4rem; }
.foot-legal h3 { font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--ink-faint); }
.foot-legal p { color: var(--ink-soft); font-size: 0.82rem; margin-top: 0.7rem; max-width: 72rem; }
.foot-copy { font-family: var(--mono); font-size: 0.75rem; color: var(--ink-faint); }

/* ---------- Accessibilité / mouvement ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .cal-track { animation: none; }
  .g-card, .g-card:hover { translate: none; transition: none; }
}

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  .hero-in { grid-template-columns: 1fr; }
  .hero-photos { min-height: 0; margin-top: 0.5rem; }
  .ph-main { position: static; rotate: none; aspect-ratio: 16 / 10; }
  .ph-a, .ph-b { display: none; }
  .maison-in { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
}
@media (max-width: 760px) {
  .head-nav { display: none; }
  .head-tel { display: none; }
  .head-in { justify-content: space-between; }
  .brand img { height: 36px; }
}