/* =============================================
   IMPRESSION 3D — CSS
   Thème : Fabrication additive / Couches / Chaleur
   Fonts : Syne (display) + Azeret Mono (mono)
   ============================================= */
@import url('https://fonts.googleapis.com/css2?family=Syne:wght@400;600;700;800&family=Azeret+Mono:wght@400;500&family=Barlow:wght@300;400;500;600&display=swap');

:root {
  --bg:        #0c0a08;
  --bg2:       #131008;
  --bg3:       #1a1510;
  --bg4:       #211c15;
  --filament:  #f97316;   /* orange chaud = filament PLA */
  --fil-soft:  rgba(249,115,22,.1);
  --fil-glow:  rgba(249,115,22,.22);
  --amber:     #fbbf24;
  --amb-soft:  rgba(251,191,36,.08);
  --teal:      #2dd4bf;
  --teal-soft: rgba(45,212,191,.08);
  --text:      #f0e8dc;
  --muted:     #6b5a42;
  --dim:       #2a1f12;
  --border:    rgba(249,115,22,.14);
  --border2:   rgba(249,115,22,.22);
  --font-d:    'Syne', sans-serif;
  --font-b:    'Barlow', sans-serif;
  --font-m:    'Azeret Mono', monospace;
  --r:         6px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  font-family: var(--font-b);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  overflow-x: hidden;
}

/* Grain texture */
body::after {
  content: '';
  position: fixed; inset: 0; z-index: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  opacity: .025; pointer-events: none;
}

::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-thumb { background: var(--filament); border-radius: 3px; }

/* ─── Canvas ─── */
#layer-canvas {
  position: fixed; inset: 0; z-index: 0;
  pointer-events: none; opacity: .28;
}

/* ─── Wrapper ─── */
.wrap {
  position: relative; z-index: 1;
  max-width: 1080px; margin: 0 auto; padding: 0 32px 100px;
}

/* ─── Header ─── */
.hdr {
  display: flex; align-items: center; justify-content: space-between;
  padding: 20px 0; border-bottom: 1px solid var(--border);
  flex-wrap: wrap; gap: 10px;
}
.hdr nav { font-family: var(--font-m); font-size: .68rem; color: var(--muted); }
.hdr nav a { color: var(--filament); text-decoration: none; }
.hdr nav span { margin: 0 7px; opacity: .4; }
.badge {
  font-family: var(--font-m); font-size: .63rem; padding: 4px 14px;
  border: 1px solid var(--border); border-radius: 100px;
  color: var(--filament); background: var(--fil-soft);
  letter-spacing: .09em; text-transform: uppercase;
}

/* ─── Hero ─── */
.hero { padding: 72px 0 52px; }

.hero-label {
  font-family: var(--font-m); font-size: .66rem; color: var(--filament);
  letter-spacing: .22em; text-transform: uppercase; margin-bottom: 20px;
  display: flex; align-items: center; gap: 14px;
}
.hero-label::after {
  content: ''; flex: 1; height: 1px;
  background: linear-gradient(90deg, var(--filament), transparent);
  max-width: 80px;
}

.hero h1 {
  font-family: var(--font-d);
  font-size: clamp(3rem, 7.5vw, 6rem);
  font-weight: 800; line-height: .95;
  color: var(--text); margin-bottom: 20px; letter-spacing: -.03em;
}
.hero h1 .hl { color: var(--filament); }

.hero-desc {
  font-size: 1.05rem; color: var(--muted);
  max-width: 580px; line-height: 1.8; margin-bottom: 36px;
}

/* Spec strip */
.hero-specs {
  display: flex; gap: 0;
  border: 1px solid var(--border); border-radius: var(--r);
  overflow: hidden; max-width: 640px;
}
.spec {
  flex: 1; padding: 16px 14px; text-align: center;
  border-right: 1px solid var(--border);
  transition: background .2s;
}
.spec:last-child { border-right: none; }
.spec:hover { background: var(--fil-soft); }
.spec strong {
  display: block; font-family: var(--font-m);
  font-size: 1.1rem; font-weight: 500; color: var(--filament); line-height: 1;
}
.spec span {
  font-family: var(--font-m); font-size: .58rem;
  color: var(--muted); text-transform: uppercase; letter-spacing: .09em; margin-top: 5px; display: block;
}

/* ─── Stats bar ─── */
.stats {
  display: grid; grid-template-columns: repeat(4, 1fr);
  background: var(--bg2); border: 1px solid var(--border);
  border-radius: var(--r); overflow: hidden; margin: 44px 0 60px;
}
.sc {
  padding: 22px 14px; text-align: center;
  border-right: 1px solid var(--border); transition: background .2s;
}
.sc:last-child { border-right: none; }
.sc:hover { background: var(--fil-soft); }
.sn { font-family: var(--font-d); font-size: 1.85rem; font-weight: 700; color: var(--filament); line-height: 1; }
.sl { font-family: var(--font-m); font-size: .57rem; color: var(--muted); text-transform: uppercase; letter-spacing: .1em; margin-top: 5px; }

/* ─── Navigation pills ─── */
.snav {
  display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 60px;
  padding: 14px 0; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border);
}
.npill {
  font-family: var(--font-m); font-size: .66rem; padding: 6px 14px;
  border: 1px solid var(--border); border-radius: 100px;
  color: var(--muted); text-decoration: none; letter-spacing: .05em;
  text-transform: uppercase; transition: all .2s;
}
.npill:hover, .npill.active {
  border-color: var(--filament); color: var(--filament); background: var(--fil-soft);
}

/* ─── Content sections ─── */
.cs {
  margin-bottom: 84px; opacity: 0;
  transform: translateY(18px); transition: opacity .55s, transform .55s;
}
.cs.vis { opacity: 1; transform: none; }

.sh {
  display: flex; align-items: center; gap: 14px;
  margin-bottom: 30px; padding-bottom: 16px; border-bottom: 1px solid var(--border);
}
.si {
  width: 46px; height: 46px; background: var(--fil-soft);
  border: 1px solid var(--border); border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.3rem; flex-shrink: 0;
}
.snum { font-family: var(--font-m); font-size: .6rem; color: var(--dim); display: block; letter-spacing: .08em; }
.stitle { font-family: var(--font-d); font-size: clamp(1.5rem, 3vw, 2rem); font-weight: 700; color: var(--text); }

/* ─── Cards ─── */
.cgrid { display: grid; grid-template-columns: repeat(auto-fill, minmax(282px, 1fr)); gap: 14px; }
.cg2   { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }

.card {
  background: var(--bg2); border: 1px solid var(--border);
  border-radius: var(--r); padding: 22px;
  position: relative; overflow: hidden;
  transition: transform .25s, border-color .25s;
}
.card:hover { transform: translateY(-3px); border-color: var(--border2); }
.card::after {
  content: ''; position: absolute; bottom: 0; left: 0; right: 0; height: 2px;
  background: linear-gradient(90deg, var(--filament), var(--amber));
  transform: scaleX(0); transform-origin: left; transition: transform .4s;
}
.card:hover::after { transform: scaleX(1); }

.chip {
  font-family: var(--font-m); font-size: .6rem; padding: 2px 9px;
  border-radius: 4px; display: inline-block; margin-bottom: 10px;
  letter-spacing: .07em; text-transform: uppercase;
  background: var(--fil-soft); color: var(--filament); border: 1px solid var(--border);
}
.chip.t { background: var(--teal-soft); color: var(--teal); border-color: rgba(45,212,191,.2); }
.chip.a { background: var(--amb-soft); color: var(--amber); border-color: rgba(251,191,36,.2); }

.card h3 { font-family: var(--font-d); font-size: 1rem; font-weight: 700; color: var(--text); margin-bottom: 8px; }
.card p  { font-size: .88rem; color: var(--muted); line-height: 1.65; }

/* ─── Tech cards (large, with icon) ─── */
.tech-card {
  background: var(--bg2); border: 1px solid var(--border);
  border-radius: var(--r); padding: 28px;
  display: grid; grid-template-columns: 56px 1fr; gap: 20px;
  transition: transform .25s, border-color .25s;
  position: relative; overflow: hidden;
}
.tech-card:hover { transform: translateY(-3px); border-color: var(--border2); }
.tech-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px;
  background: linear-gradient(90deg, var(--filament), var(--amber));
  transform: scaleX(0); transform-origin: left; transition: transform .4s;
}
.tech-card:hover::before { transform: scaleX(1); }
.tc-icon {
  width: 56px; height: 56px; background: var(--fil-soft);
  border: 1px solid var(--border); border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.6rem; flex-shrink: 0;
}
.tc-body h3 { font-family: var(--font-d); font-size: 1rem; font-weight: 700; color: var(--text); margin-bottom: 6px; }
.tc-body p  { font-size: .86rem; color: var(--muted); line-height: 1.65; }
.tc-meta {
  display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px;
}
.tc-tag {
  font-family: var(--font-m); font-size: .6rem; padding: 2px 8px;
  border-radius: 3px; background: var(--fil-soft);
  color: var(--filament); border: 1px solid var(--border);
}

/* ─── Pipeline ─── */
.pipe {
  display: flex; background: var(--bg2);
  border: 1px solid var(--border); border-radius: var(--r); overflow: hidden; margin: 20px 0;
}
.ps {
  flex: 1; min-width: 100px; padding: 18px 12px; text-align: center;
  border-right: 1px solid var(--border); transition: background .2s;
}
.ps:last-child { border-right: none; }
.ps:hover { background: var(--fil-soft); }
.pi { font-size: 1.4rem; margin-bottom: 5px; }
.pn { font-family: var(--font-m); font-size: .62rem; color: var(--filament); text-transform: uppercase; letter-spacing: .07em; display: block; margin-bottom: 3px; }
.ps p { font-size: .72rem; color: var(--muted); }

/* ─── Table ─── */
.tbl { width: 100%; border-collapse: collapse; font-size: .84rem; margin: 16px 0; }
.tbl thead th {
  font-family: var(--font-m); font-size: .62rem; letter-spacing: .1em; text-transform: uppercase;
  color: var(--filament); padding: 12px 14px; text-align: left;
  border-bottom: 1px solid var(--border); background: var(--bg2);
}
.tbl tbody td { padding: 12px 14px; border-bottom: 1px solid rgba(249,115,22,.05); color: var(--muted); vertical-align: top; }
.tbl tbody td:first-child { font-family: var(--font-m); font-size: .78rem; font-weight: 500; color: var(--text); }
.tbl tbody tr:hover td { background: var(--fil-soft); }
.tag { font-family: var(--font-m); font-size: .6rem; padding: 2px 7px; border-radius: 3px; background: var(--fil-soft); color: var(--filament); border: 1px solid var(--border); }
.tag.t { background: var(--teal-soft); color: var(--teal); border-color: rgba(45,212,191,.2); }

/* ─── Info box ─── */
.info {
  background: var(--fil-soft); border: 1px solid var(--border);
  border-left: 3px solid var(--filament);
  border-radius: 0 var(--r) var(--r) 0; padding: 20px 24px; margin: 20px 0;
}
.info-t { font-family: var(--font-m); font-size: .68rem; color: var(--filament); text-transform: uppercase; letter-spacing: .1em; margin-bottom: 8px; }
.info p { font-size: .9rem; color: var(--muted); line-height: 1.65; }

/* ─── Layer visual ─── */
.layer-viz {
  background: var(--bg3); border: 1px solid var(--border);
  border-radius: var(--r); padding: 24px; margin: 20px 0;
  display: flex; gap: 10px; align-items: flex-end;
}
.layer-bar-wrap { display: flex; flex-direction: column; gap: 3px; flex: 1; }
.layer-bar {
  height: 6px; border-radius: 2px; background: var(--filament);
  transform-origin: left; animation: grow 1s ease-out both;
}
.layer-bar:nth-child(2n)   { background: var(--amber); }
.layer-bar:nth-child(3n+1) { background: var(--teal); }
@keyframes grow { from { transform: scaleX(0); } to { transform: scaleX(1); } }
.layer-label { font-family: var(--font-m); font-size: .65rem; color: var(--muted); writing-mode: vertical-rl; transform: rotate(180deg); white-space: nowrap; }

/* ─── Tools ─── */
.tpill {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 6px 12px; background: var(--bg2); border: 1px solid var(--border);
  border-radius: 6px; margin: 4px; font-family: var(--font-m); font-size: .73rem;
  color: var(--muted); transition: all .2s;
}
.tpill:hover { border-color: var(--filament); color: var(--filament); }
.tpill .d { width: 5px; height: 5px; border-radius: 50%; background: var(--filament); }
.tpill .dt { background: var(--teal); }
.tpill .da { background: var(--amber); }

/* ─── Footer ─── */
.ftr {
  margin-top: 80px; padding-top: 22px; border-top: 1px solid var(--border);
  display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px;
}
.ftr p { font-family: var(--font-m); font-size: .65rem; color: var(--muted); }
.ftr a { color: var(--filament); text-decoration: none; }

/* ─── Responsive ─── */
@media (max-width: 720px) {
  .wrap { padding: 0 18px 80px; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .cg2 { grid-template-columns: 1fr; }
  .pipe { flex-wrap: wrap; }
  .ps { border-right: none; border-bottom: 1px solid var(--border); }
  .hero-specs { flex-wrap: wrap; }
  .tech-card { grid-template-columns: 1fr; }
}