/* VITTA PRO SOUDURE — couleurs et polices d'origine du client */
:root {
  --graphite: #0B0F12;
  --anthracite: #151A1E;
  --panel: #1a2026;
  --steel: #8B949E;
  --blue: #19B7FF;
  --copper: #D97932;
  --copper-hot: #ec8840;
  --smoke: #F3F5F6;
  --text: #B9C1C8;
  --line: rgba(255, 255, 255, 0.10);
  --heat: linear-gradient(90deg, #5b6570 0%, #3b5d8f 40%, #8a5a9c 62%, #D97932 80%, #ffd27a 93%, #ffffff 100%);
  --radius: 14px;
  --container: 1240px;
  --ease: cubic-bezier(.22, .8, .24, 1);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: "Inter", system-ui, sans-serif;
  font-size: 17px;
  line-height: 1.65;
  color: var(--smoke);
  background: var(--graphite);
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
h1, h2, h3 { font-family: "Space Grotesk", sans-serif; font-weight: 700; line-height: 1.1; margin: 0; color: var(--smoke); }
h2 { font-size: clamp(32px, 4.4vw, 54px); letter-spacing: -0.01em; }
h3 { font-size: 21px; }
p { margin: 0; color: var(--text); }
button, input, select, textarea { font: inherit; }

.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 24px; }
.ico { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; flex: none; }

.eyebrow {
  display: inline-flex; align-items: center; gap: 12px;
  margin: 0 0 18px;
  font-family: "IBM Plex Mono", monospace; font-size: 13px; font-weight: 600;
  letter-spacing: .14em; text-transform: uppercase; color: var(--blue);
}
.eyebrow::before { content: ""; width: 34px; height: 2px; border-radius: 2px; background: var(--heat); }

.section { padding: clamp(80px, 10vw, 130px) 0; position: relative; overflow-x: clip; }
.section-head { max-width: 760px; margin-bottom: 54px; }
.section-head p:not(.eyebrow) { margin-top: 18px; font-size: 19px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.section-head.center .eyebrow { justify-content: center; }

/* Boutons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  min-height: 54px; padding: 0 26px; border-radius: 999px;
  font-weight: 600; font-size: 16px; border: 1px solid transparent; cursor: pointer;
  transition: transform .25s var(--ease), box-shadow .25s, background .25s, border-color .25s;
}
.btn:hover { transform: translateY(-2px); }
.btn-copper { background: var(--copper); color: #160a03; box-shadow: 0 10px 30px -10px rgba(217, 121, 50, .7); }
.btn-copper:hover { background: var(--copper-hot); box-shadow: 0 14px 36px -10px rgba(236, 136, 64, .85); }
.btn-ghost { border-color: rgba(255, 255, 255, .28); color: var(--smoke); background: rgba(11, 15, 18, .35); backdrop-filter: blur(6px); }
.btn-ghost:hover { border-color: var(--blue); color: #fff; }
.btn-sm { min-height: 44px; padding: 0 20px; font-size: 15px; }
.btn-block { width: 100%; }

/* ---------- Écran de chargement : le nom se soude ---------- */
.loader {
  position: fixed; inset: 0; z-index: 2000;
  display: grid; place-items: center;
  background: var(--graphite);
  transition: transform .9s var(--ease) .1s;
}
.loader.is-done { transform: translateY(-100%); }
.loader-inner { width: min(560px, 86vw); text-align: center; }
.loader-brand { font-family: "Space Grotesk", sans-serif; font-weight: 700; font-size: clamp(30px, 6vw, 52px); letter-spacing: .02em; }
.loader-brand span { color: var(--copper); }
.loader-seam { position: relative; height: 3px; margin: 22px 0 18px; background: rgba(255, 255, 255, .08); border-radius: 3px; }
.loader-bead { position: absolute; inset: 0 auto 0 0; width: 0; border-radius: 3px; background: var(--heat); animation: seamFill 1.5s var(--ease) forwards; }
.loader-tip {
  position: absolute; top: 50%; left: 0; width: 14px; height: 14px; margin: -7px 0 0 -7px; border-radius: 50%;
  background: #fff; box-shadow: 0 0 12px 4px #bfeaff, 0 0 36px 10px rgba(25, 183, 255, .6);
  animation: seamTip 1.5s var(--ease) forwards, flicker .09s steps(2) infinite;
}
.loader-sub { font-family: "IBM Plex Mono", monospace; font-size: 12px; letter-spacing: .32em; text-transform: uppercase; color: var(--steel); }
@keyframes seamFill { to { width: 100%; } }
@keyframes seamTip { to { left: 100%; } }
@keyframes flicker { 50% { opacity: .55; } }

/* ---------- En-tête ---------- */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  transition: background .3s, border-color .3s;
  border-bottom: 1px solid transparent;
}
.site-header.is-scrolled { background: rgba(11, 15, 18, .86); backdrop-filter: blur(14px); border-color: var(--line); }
.header-row { display: flex; align-items: center; gap: 28px; height: 78px; }
.brand { font-family: "Space Grotesk", sans-serif; font-weight: 700; font-size: 20px; letter-spacing: .02em; white-space: nowrap; }
.brand span { color: var(--copper); }
.main-nav { display: flex; align-items: center; gap: 4px; margin-left: auto; }
.main-nav a { padding: 8px 12px; font-size: 15px; font-weight: 500; color: rgba(243, 245, 246, .82); border-radius: 8px; transition: color .2s; }
.main-nav a:hover { color: var(--blue); }
.main-nav .nav-cta { display: none; }
.header-phone {
  display: inline-flex; align-items: center; gap: 9px; padding: 10px 18px; border-radius: 999px;
  background: var(--copper); color: #160a03; font-weight: 700; font-size: 15px; white-space: nowrap;
}
.header-phone:hover { background: var(--copper-hot); }
.burger { display: none; margin-left: auto; width: 46px; height: 46px; border-radius: 12px; border: 1px solid var(--line); background: rgba(11, 15, 18, .6); color: var(--smoke); cursor: pointer; align-items: center; justify-content: center; }
.burger .ico { width: 24px; height: 24px; }
.burger .ico-close { display: none; }
.menu-open .burger .ico-open { display: none; }
.menu-open .burger .ico-close { display: block; }

/* ---------- Hero ---------- */
.hero { position: relative; min-height: 100vh; min-height: 100svh; display: flex; align-items: center; overflow: hidden; isolation: isolate; }
.hero-bg { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: 60% center; z-index: -3; transform: scale(1.06); transition: transform 2.4s var(--ease); }
.is-loaded .hero-bg { transform: scale(1); }
.hero-sparks { position: absolute; inset: 0; width: 100%; height: 100%; z-index: -2; pointer-events: none; }
.hero-shade {
  position: absolute; inset: 0; z-index: -1;
  background:
    linear-gradient(90deg, rgba(11, 15, 18, .94) 0%, rgba(11, 15, 18, .78) 38%, rgba(11, 15, 18, .15) 70%, rgba(11, 15, 18, .05) 100%),
    linear-gradient(0deg, var(--graphite) 0%, rgba(11, 15, 18, 0) 26%);
}
.hero-content { padding-top: 120px; padding-bottom: 110px; }
.hero-title { font-size: clamp(46px, 7.4vw, 104px); line-height: .98; letter-spacing: -0.025em; max-width: 12ch; }
.hero-title .line { display: block; }
.hero-title em { font-style: normal; color: transparent; background: linear-gradient(90deg, #ffd27a, var(--copper) 55%, #b45a1c); -webkit-background-clip: text; background-clip: text; }
.hero-text { max-width: 560px; margin-top: 28px; font-size: clamp(18px, 1.6vw, 21px); color: #d3d9de; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 36px; }
.hero-tags { display: flex; flex-wrap: wrap; gap: 10px; margin: 36px 0 0; padding: 0; list-style: none; }
.hero-tags li { padding: 7px 14px; border: 1px solid rgba(255, 255, 255, .16); border-radius: 999px; font-family: "IBM Plex Mono", monospace; font-size: 13px; color: #cfd6dc; background: rgba(11, 15, 18, .4); }
.hero-scroll { position: absolute; left: 50%; bottom: 28px; width: 28px; height: 46px; margin-left: -14px; border: 2px solid rgba(255, 255, 255, .35); border-radius: 16px; }
.hero-scroll span { position: absolute; left: 50%; top: 8px; width: 4px; height: 9px; margin-left: -2px; border-radius: 2px; background: var(--copper); animation: scrollDot 1.8s infinite; }
@keyframes scrollDot { 0% { transform: translateY(0); opacity: 1; } 80% { transform: translateY(16px); opacity: 0; } 100% { opacity: 0; } }

/* Entrée du hero : les lignes sortent de l'ombre, une à une */
.js .hero-title .line, .js .hero-text, .js .hero-actions, .js .hero-tags, .js .hero .eyebrow {
  opacity: 0; transform: translateY(24px); filter: blur(6px);
  transition: opacity .9s var(--ease), transform .9s var(--ease), filter .9s var(--ease);
}
.is-loaded .hero .eyebrow { transition-delay: .05s; }
.is-loaded .hero-title .line:nth-child(1) { transition-delay: .15s; }
.is-loaded .hero-title .line:nth-child(2) { transition-delay: .3s; }
.is-loaded .hero-title .line:nth-child(3) { transition-delay: .45s; }
.is-loaded .hero-text { transition-delay: .6s; }
.is-loaded .hero-actions { transition-delay: .72s; }
.is-loaded .hero-tags { transition-delay: .84s; }
.is-loaded .hero-title .line, .is-loaded .hero-text, .is-loaded .hero-actions, .is-loaded .hero-tags, .is-loaded .hero .eyebrow,
.motion-done .hero-title .line, .motion-done .hero-text, .motion-done .hero-actions, .motion-done .hero-tags, .motion-done .hero .eyebrow { opacity: 1; transform: none; filter: none; }

/* ---------- Apparitions au défilement ---------- */
.js .reveal { opacity: .18; transform: translateY(34px); transition: opacity .9s var(--ease), transform .9s var(--ease); }
.js .reveal.is-in, .motion-done .reveal { opacity: 1; transform: none; }

/* ---------- Atouts ---------- */
.trust { position: relative; z-index: 2; margin-top: -60px; }
.trust-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0; background: var(--anthracite); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; box-shadow: 0 30px 60px -30px rgba(0, 0, 0, .8); padding: 0; }
.trust-item { display: flex; gap: 16px; align-items: flex-start; padding: 28px 26px; border-right: 1px solid var(--line); }
.trust-item:last-child { border-right: 0; }
.trust-item .ico { width: 30px; height: 30px; color: var(--copper); margin-top: 2px; }
.trust-item strong { display: block; font-family: "Space Grotesk", sans-serif; font-size: 19px; }
.trust-item span { display: block; font-size: 15px; color: var(--text); line-height: 1.45; margin-top: 4px; }

/* ---------- Services ---------- */
.service-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; }
.service-card {
  position: relative; display: flex; flex-direction: column;
  background: var(--anthracite); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden;
  transition: border-color .35s, transform .35s var(--ease), box-shadow .35s;
}
.service-card:hover { border-color: rgba(217, 121, 50, .55); transform: translateY(-6px); box-shadow: 0 26px 50px -26px rgba(217, 121, 50, .45); }
.service-media { aspect-ratio: 4 / 3; overflow: hidden; background: var(--panel); }
.service-media img { width: 100%; height: 100%; object-fit: cover; transition: transform .8s var(--ease), filter .8s; filter: saturate(.92); }
.service-card:hover .service-media img { transform: scale(1.06); filter: saturate(1.1); }
.service-body { padding: 26px 26px 30px; flex: 1; display: flex; flex-direction: column; }
.service-body .ico { width: 28px; height: 28px; color: var(--blue); margin-bottom: 14px; }
.service-body h3 { font-size: 23px; }
.service-body p { margin-top: 10px; font-size: 16.5px; }
.service-body .tag { margin-top: auto; padding-top: 18px; font-family: "IBM Plex Mono", monospace; font-size: 12.5px; letter-spacing: .06em; color: var(--copper); }
/* Le cordon se dépose le long de la carte, puis refroidit */
.bead { position: absolute; left: 0; bottom: 0; height: 3px; width: 100%; background: var(--heat); transform-origin: left; transform: scaleX(0); }
.bead::after { content: ""; position: absolute; right: -5px; top: 50%; width: 10px; height: 10px; margin-top: -5px; border-radius: 50%; background: #fff; box-shadow: 0 0 10px 3px #bfeaff, 0 0 26px 8px rgba(25, 183, 255, .55); opacity: 0; }
.service-card.is-in .bead { animation: beadRun 1.4s var(--ease) .25s forwards; }
.service-card.is-in .bead::after { animation: beadSpark 1.4s linear .25s forwards; }
.motion-done .bead { transform: scaleX(1); }
@keyframes beadRun { to { transform: scaleX(1); } }
@keyframes beadSpark { 0%, 90% { opacity: 1; } 100% { opacity: 0; } }

/* ---------- Procédés ---------- */
.processes { background: linear-gradient(180deg, var(--graphite), #0e1418 50%, var(--graphite)); }
.process-layout { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr); gap: 64px; align-items: center; }
.process-copy .lead { margin-top: 18px; font-size: 19px; }
.process-tabs { display: inline-flex; gap: 6px; padding: 6px; margin-top: 34px; background: var(--anthracite); border: 1px solid var(--line); border-radius: 999px; }
.process-tab {
  min-width: 96px; padding: 12px 22px; border: 0; border-radius: 999px; background: transparent; color: var(--text);
  font-family: "Space Grotesk", sans-serif; font-weight: 700; font-size: 18px; letter-spacing: .08em; cursor: pointer; transition: background .25s, color .25s;
}
.process-tab:hover { color: var(--smoke); }
.process-tab.is-active { background: var(--blue); color: #04121a; }
.process-panels { margin-top: 28px; min-height: 210px; }
.process-panel h3 { font-size: 28px; }
.process-panel p { margin-top: 12px; font-size: 18px; }
.process-panel.is-active { animation: panelIn .5s var(--ease); }
@keyframes panelIn { from { opacity: 0; transform: translateY(10px); } }
.chips { display: flex; flex-wrap: wrap; gap: 10px; margin: 20px 0 0; padding: 0; list-style: none; }
.chips li { padding: 7px 14px; border-radius: 999px; border: 1px solid rgba(25, 183, 255, .35); color: #bfeaff; font-size: 14px; font-weight: 600; }

.arc-stage { margin: 0; position: relative; background: radial-gradient(120% 90% at 50% 80%, #13202a 0%, #0b0f12 70%); border: 1px solid var(--line); border-radius: 20px; overflow: hidden; }
.arc-stage svg { display: block; width: 100%; height: auto; }
.arc-stage figcaption { display: flex; align-items: center; gap: 10px; padding: 16px 22px; border-top: 1px solid var(--line); font-family: "IBM Plex Mono", monospace; font-size: 13.5px; color: var(--text); }
.arc-stage .dot { width: 9px; height: 9px; border-radius: 50%; background: var(--blue); box-shadow: 0 0 10px var(--blue); animation: flicker .12s steps(2) infinite; }
.tool { opacity: 0; transition: opacity .4s; }
.arc-stage[data-process="arc"] .tool-arc, .arc-stage[data-process="mig"] .tool-mig, .arc-stage[data-process="tig"] .tool-tig { opacity: 1; }
.stage-bead { stroke-dasharray: 220; stroke-dashoffset: 220; animation: stageBead 3.2s linear infinite; }
@keyframes stageBead { 0% { stroke-dashoffset: 220; } 85%, 100% { stroke-dashoffset: 0; } }
.arc-light .halo { transform-origin: 286px 294px; animation: halo .14s steps(2) infinite; }
.arc-light .bolt { animation: flicker .07s steps(2) infinite; }
@keyframes halo { 50% { transform: scale(.88); opacity: .8; } }
.arc-stage[data-process="arc"] .halo { fill: url(#glow); filter: hue-rotate(160deg) saturate(1.4); }
.arc-stage[data-process="tig"] .halo { opacity: .85; }
.filler { animation: filler 1.2s ease-in-out infinite; }
@keyframes filler { 50% { transform: translate(6px, 4px); } }

/* ---------- L'atelier ---------- */
.about-layout { display: grid; grid-template-columns: minmax(0, .95fr) minmax(0, 1.05fr); gap: 70px; align-items: center; }
.about-media { position: relative; border-radius: 20px; overflow: hidden; aspect-ratio: 4 / 5; background: var(--panel); }
.about-media img { width: 100%; height: 100%; object-fit: cover; }
.about-badge { position: absolute; left: 20px; bottom: 20px; display: flex; align-items: center; gap: 10px; padding: 12px 18px; border-radius: 999px; background: rgba(11, 15, 18, .82); backdrop-filter: blur(8px); border: 1px solid var(--line); font-weight: 600; font-size: 15px; }
.about-badge .ico { color: var(--copper); }
.about-copy > p:not(.eyebrow) { margin-top: 22px; font-size: 18.5px; }
.quote { margin: 30px 0 0; padding: 22px 26px; border-left: 3px solid var(--copper); background: var(--anthracite); border-radius: 0 12px 12px 0; font-family: "Space Grotesk", sans-serif; font-size: 21px; line-height: 1.4; color: var(--smoke); }
.steps-mini { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 10px; margin: 30px 0 0; padding: 0; list-style: none; }
.steps-mini li { padding: 16px 14px; border: 1px solid var(--line); border-radius: 12px; font-weight: 600; font-size: 15.5px; text-align: center; }
.steps-mini span { display: block; font-family: "IBM Plex Mono", monospace; font-size: 12px; color: var(--blue); margin-bottom: 4px; }

/* ---------- Méthode : la soudure avance avec le défilement ---------- */
.method { background: var(--anthracite); }
.seam-track { position: relative; --p: 0; }
.seam-line { position: absolute; left: 10%; right: 10%; top: 9px; height: 4px; border-radius: 4px; background: rgba(255, 255, 255, .08); }
.seam-fill { position: absolute; inset: 0; border-radius: 4px; background: linear-gradient(90deg, #5b6570, #3b5d8f 40%, #8a5a9c 70%, var(--copper) 88%, #ffd27a); transform-origin: left; transform: scaleX(var(--p)); }
.seam-tip { position: absolute; top: 50%; left: calc(var(--p) * 100%); width: 16px; height: 16px; margin: -8px 0 0 -8px; border-radius: 50%; background: #fff; box-shadow: 0 0 14px 4px #bfeaff, 0 0 40px 12px rgba(25, 183, 255, .5); animation: flicker .1s steps(2) infinite; }
.seam-steps { position: relative; display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 20px; margin: 0; padding: 0; list-style: none; }
.seam-step { text-align: center; padding-top: 0; }
.seam-step .node { display: block; width: 22px; height: 22px; margin: 0 auto 26px; border-radius: 50%; background: var(--anthracite); border: 3px solid #39424b; transition: border-color .4s, background .4s, box-shadow .4s; }
.seam-step.is-hot .node { border-color: var(--copper); background: #ffd27a; box-shadow: 0 0 18px rgba(236, 136, 64, .8); }
.seam-step .ico { width: 30px; height: 30px; color: var(--steel); transition: color .4s; }
.seam-step.is-hot .ico { color: var(--copper); }
.seam-step b { display: block; margin-top: 10px; font-family: "IBM Plex Mono", monospace; font-size: 13px; color: var(--blue); }
.seam-step h3 { margin-top: 6px; font-size: 20px; }
.seam-step p { margin-top: 8px; font-size: 15.5px; line-height: 1.5; }

/* ---------- Bandeau appel ---------- */
.cta-band { padding: 0; position: relative; }
.cta-band-inner {
  position: relative; display: flex; align-items: center; justify-content: space-between; gap: 36px;
  width: calc(100% - 48px); max-width: calc(var(--container) - 48px);
  margin: -1px auto 0; padding: 56px 56px; border-radius: 22px; overflow: hidden;
  background: linear-gradient(115deg, #2a160a 0%, #1a1512 40%, #0f1a22 100%);
  border: 1px solid rgba(217, 121, 50, .35);
  transform: translateY(50%); z-index: 2;
}
.cta-band-inner::before { content: ""; position: absolute; inset: auto -10% -60% auto; width: 420px; height: 420px; border-radius: 50%; background: radial-gradient(circle, rgba(217, 121, 50, .35), transparent 65%); pointer-events: none; }
.cta-band h2 { font-size: clamp(30px, 3.6vw, 44px); }
.cta-band p:not(.eyebrow) { margin-top: 10px; font-size: 18px; }
.cta-band-actions { display: flex; flex-wrap: wrap; gap: 12px; position: relative; flex: none; }

/* ---------- Galerie 3 × 2 ---------- */
.gallery { padding-top: clamp(140px, 14vw, 190px); }
.gallery-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.g-item { position: relative; margin: 0; aspect-ratio: 4 / 3; border-radius: var(--radius); overflow: hidden; background: var(--panel); }
.g-item img { width: 100%; height: 100%; object-fit: cover; transition: transform .9s var(--ease), filter .9s; }
.g-item::after { content: ""; position: absolute; inset: 0; background: linear-gradient(0deg, rgba(11, 15, 18, .85) 0%, rgba(11, 15, 18, 0) 50%); }
/* Teinte de chauffe au survol */
.g-item::before { content: ""; position: absolute; inset: 0; z-index: 1; background: linear-gradient(120deg, rgba(25, 183, 255, .0), rgba(138, 90, 156, .28), rgba(217, 121, 50, .32)); opacity: 0; transition: opacity .6s; mix-blend-mode: color; }
.g-item:hover::before { opacity: 1; }
.g-item:hover img { transform: scale(1.07); }
.g-item figcaption { position: absolute; left: 20px; bottom: 18px; z-index: 2; font-family: "Space Grotesk", sans-serif; font-weight: 600; font-size: 19px; }
.g-item figcaption::before { content: ""; display: block; width: 26px; height: 3px; border-radius: 3px; margin-bottom: 10px; background: var(--heat); }

/* ---------- Engagements ---------- */
.commit-layout { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 70px; align-items: center; }
.big-quote { margin-top: 28px; font-family: "Space Grotesk", sans-serif; font-size: clamp(22px, 2.4vw, 30px); line-height: 1.35; color: #dfe4e8; }
.big-quote::before { content: ""; display: block; width: 60px; height: 3px; margin-bottom: 22px; background: var(--copper); border-radius: 3px; }
.commit-list { display: grid; gap: 16px; }
.commit-item { display: flex; gap: 20px; padding: 26px 28px; background: var(--anthracite); border: 1px solid var(--line); border-radius: var(--radius); transition: border-color .3s, transform .3s var(--ease); }
.commit-item:hover { border-color: rgba(25, 183, 255, .5); transform: translateX(6px); }
.commit-item .ico { width: 30px; height: 30px; color: var(--blue); margin-top: 2px; }
.commit-item p { margin-top: 6px; font-size: 16.5px; }

/* ---------- FAQ ---------- */
.faq { background: var(--anthracite); }
.faq-layout { display: grid; grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr); gap: 70px; align-items: start; }
.faq-intro p:not(.eyebrow) { margin: 20px 0 30px; font-size: 18px; }
.faq-list { display: grid; gap: 12px; }
.faq-list details { background: var(--graphite); border: 1px solid var(--line); border-radius: 12px; transition: border-color .3s; }
.faq-list details[open] { border-color: rgba(217, 121, 50, .45); }
.faq-list summary { display: flex; justify-content: space-between; align-items: center; gap: 18px; padding: 20px 24px; cursor: pointer; list-style: none; font-family: "Space Grotesk", sans-serif; font-weight: 600; font-size: 18.5px; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary .ico { color: var(--copper); transition: transform .3s; }
.faq-list details[open] summary .ico { transform: rotate(45deg); }
.faq-list details p { padding: 0 24px 22px; font-size: 16.5px; }

/* ---------- Contact ---------- */
.contact { position: relative; padding: clamp(90px, 10vw, 130px) 0; overflow: hidden; isolation: isolate; }
.contact-bg { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: 65% center; z-index: -2; }
.contact-shade { position: absolute; inset: 0; z-index: -1; background: linear-gradient(90deg, rgba(11, 15, 18, .94) 0%, rgba(11, 15, 18, .74) 50%, rgba(11, 15, 18, .5) 100%); }
.contact-layout { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 60px; align-items: center; }
.contact-copy > p:not(.eyebrow) { margin-top: 20px; font-size: 18.5px; color: #d0d7dc; }
.contact-phone { display: inline-flex; align-items: center; gap: 16px; margin-top: 32px; padding: 16px 24px 16px 18px; border-radius: 16px; background: rgba(217, 121, 50, .12); border: 1px solid rgba(217, 121, 50, .45); font-family: "Space Grotesk", sans-serif; font-weight: 700; font-size: clamp(22px, 2.6vw, 30px); transition: background .3s; }
.contact-phone:hover { background: rgba(217, 121, 50, .22); }
.contact-phone .ico { width: 44px; height: 44px; padding: 11px; border-radius: 50%; background: var(--copper); color: #160a03; }
.contact-phone small { display: block; font-family: "IBM Plex Mono", monospace; font-weight: 500; font-size: 12px; letter-spacing: .12em; text-transform: uppercase; color: var(--text); }
.contact-points { display: flex; flex-wrap: wrap; gap: 10px 24px; margin: 28px 0 0; padding: 0; list-style: none; }
.contact-points li { display: flex; align-items: center; gap: 8px; font-weight: 600; }
.contact-points .ico { color: var(--blue); }

.contact-form { padding: 34px; border-radius: 20px; background: rgba(21, 26, 30, .92); border: 1px solid var(--line); backdrop-filter: blur(10px); box-shadow: 0 40px 80px -40px rgba(0, 0, 0, .9); }
.contact-form h3 { font-size: 26px; }
.form-note { margin: 8px 0 22px; font-size: 14.5px; }
.field-row { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.field { display: block; margin-bottom: 14px; }
.field span { display: block; margin-bottom: 6px; font-size: 14px; font-weight: 600; color: #cfd6dc; }
.field input, .field select, .field textarea {
  width: 100%; padding: 13px 15px; border-radius: 10px; border: 1px solid rgba(255, 255, 255, .14);
  background: var(--graphite); color: var(--smoke); font-size: 16px; transition: border-color .2s, box-shadow .2s;
}
.field select { appearance: none; background-image: linear-gradient(45deg, transparent 50%, var(--copper) 50%), linear-gradient(135deg, var(--copper) 50%, transparent 50%); background-position: calc(100% - 20px) 52%, calc(100% - 14px) 52%; background-size: 6px 6px; background-repeat: no-repeat; padding-right: 38px; }
.field textarea { resize: vertical; min-height: 110px; }
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--blue); box-shadow: 0 0 0 3px rgba(25, 183, 255, .2); }
.field .is-invalid { border-color: #ff6b5a; }
.form-error { margin: 0 0 14px; color: #ff9d8f; font-size: 15px; font-weight: 600; }

/* ---------- Pied de page ---------- */
.site-footer { position: relative; background: #080b0d; padding: 76px 0 0; }
.footer-seam { position: absolute; top: 0; left: 0; right: 0; height: 3px; background: var(--heat); opacity: .85; }
.footer-grid { display: grid; grid-template-columns: minmax(0, 1.4fr) repeat(3, minmax(0, 1fr)); gap: 40px; padding-bottom: 54px; }
.footer-brand .brand { font-size: 24px; }
.footer-brand p { margin: 16px 0 24px; max-width: 360px; font-size: 16px; }
.site-footer h3 { margin-bottom: 18px; font-family: "IBM Plex Mono", monospace; font-size: 13px; letter-spacing: .14em; text-transform: uppercase; color: var(--blue); }
.footer-grid > div > a:not(.btn):not(.brand) { display: block; padding: 5px 0; color: var(--text); font-size: 16px; transition: color .2s; }
.footer-grid > div > a:not(.btn):not(.brand):hover { color: var(--copper); }
.footer-line { display: flex !important; align-items: center; gap: 10px; }
.footer-line .ico { width: 18px; height: 18px; color: var(--copper); }
.footer-bottom { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; padding-top: 24px; padding-bottom: 28px; border-top: 1px solid var(--line); }
.footer-bottom p { font-size: 14.5px; }
.footer-bottom a { color: var(--copper); font-weight: 700; }
.footer-bottom a:hover { color: var(--copper-hot); }

/* Image absente : un fond sobre plutôt qu'un trou */
.img-missing { opacity: 0; }
.service-media:has(.img-missing), .g-item:has(.img-missing), .about-media:has(.img-missing) { background: linear-gradient(135deg, #1c2329, #11161a); }

/* ---------- Tablette ---------- */
@media (max-width: 1080px) {
  .main-nav a:not(.nav-cta) { padding: 8px 8px; font-size: 14px; }
  .header-phone span { display: none; }
  .header-phone { padding: 12px; }
  .process-layout, .about-layout, .commit-layout, .faq-layout, .contact-layout { gap: 44px; }
  .service-grid, .gallery-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .trust-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .trust-item:nth-child(2) { border-right: 0; }
  .trust-item:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 900px) {
  .burger { display: inline-flex; }
  .header-phone { margin-left: auto; }
  .burger { margin-left: 0; }
  .main-nav {
    position: fixed; top: 78px; left: 0; right: 0; flex-direction: column; align-items: stretch; gap: 0;
    padding: 12px 20px 24px; background: rgba(11, 15, 18, .97); border-bottom: 1px solid var(--line);
    transform: translateY(-12px); opacity: 0; visibility: hidden; transition: .3s var(--ease);
  }
  .menu-open .main-nav { transform: none; opacity: 1; visibility: visible; }
  .menu-open .site-header { background: rgba(11, 15, 18, .97); }
  .main-nav a:not(.nav-cta) { padding: 14px 4px; font-size: 18px; border-bottom: 1px solid var(--line); border-radius: 0; }
  .main-nav .nav-cta { display: flex; justify-content: center; margin-top: 18px; padding: 15px; border-radius: 999px; background: var(--copper); color: #160a03; font-weight: 700; }

  .process-layout, .about-layout, .commit-layout, .faq-layout, .contact-layout { grid-template-columns: minmax(0, 1fr); }
  .about-media { aspect-ratio: 16 / 11; }
  .seam-line { left: 10px; right: auto; top: 0; bottom: 0; width: 4px; height: auto; }
  .seam-fill { transform-origin: top; transform: scaleY(var(--p)); }
  .seam-tip { left: 50%; top: calc(var(--p) * 100%); }
  .seam-steps { grid-template-columns: minmax(0, 1fr); gap: 34px; padding-left: 48px; }
  .seam-step { text-align: left; position: relative; }
  .seam-step .node { position: absolute; left: -48px; top: 2px; margin: 0; }
  .cta-band-inner { flex-direction: column; align-items: flex-start; padding: 40px 30px; }
}

/* ---------- Mobile ---------- */
@media (max-width: 600px) {
  body { font-size: 16px; }
  .container { padding: 0 16px; }
  .header-row { height: 68px; gap: 10px; }
  .main-nav { top: 68px; }
  .brand { font-size: 17px; }
  .hero { align-items: flex-end; }
  .hero { background: var(--graphite); }
  .hero-bg { height: 430px; object-position: 68% center; }
  .hero-shade { background: linear-gradient(180deg, rgba(11, 15, 18, .55) 0, rgba(11, 15, 18, 0) 90px, rgba(11, 15, 18, 0) 300px, var(--graphite) 430px); }
  .hero-content { padding-top: 372px; padding-bottom: 96px; }
  .hero-actions .btn { width: 100%; }
  .trust { margin-top: -40px; }
  .trust-grid, .service-grid, .gallery-grid { grid-template-columns: minmax(0, 1fr); }
  .trust-item { border-right: 0 !important; border-bottom: 1px solid var(--line); padding: 20px; }
  .trust-item:last-child { border-bottom: 0; }
  .section-head { margin-bottom: 38px; }
  .section-head p:not(.eyebrow) { font-size: 17px; }
  .process-tabs { display: flex; }
  .process-tab { flex: 1; min-width: 0; padding: 12px 6px; }
  .process-panels { min-height: 250px; }
  .steps-mini { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .quote { font-size: 18px; }
  .cta-band-actions, .cta-band-actions .btn { width: 100%; }
  .cta-band-inner { width: calc(100% - 32px); padding: 34px 22px; }
  .contact-form { padding: 24px 18px; }
  .field-row { grid-template-columns: minmax(0, 1fr); gap: 0; }
  .contact-phone { font-size: 21px; }
  .footer-grid { grid-template-columns: minmax(0, 1fr); gap: 32px; }
  .footer-bottom { flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  .js .reveal { opacity: 1; transform: none; }
}