/* ============================================================
   mitochondrie.css — Centrale Énergétique
   Palette : #0a0806 charbon | #f97316 orange plasma | #ef4444 rouge thermique | #fbbf24 ambre ATP
   Polices  : Syne (display industriel) + DM Sans (corps) + JetBrains Mono
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Syne:wght@400;600;700;800&family=DM+Sans:ital,wght@0,400;0,500;0,700;1,400&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
  --coal:    #0a0806;
  --coal2:   #110d09;
  --coal3:   #1a130e;
  --card:    #100c08;
  --border:  #2a1c10;
  --border2: #3d2616;
  --orange:  #f97316;
  --orange2: #ea580c;
  --red:     #ef4444;
  --red2:    #dc2626;
  --amber:   #fbbf24;
  --amber2:  #f59e0b;
  --green:   #22c55e;
  --teal:    #14b8a6;
  --text:    #c08060;
  --text-hi: #fdf0e8;
  --muted:   #5a3820;
}

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

body {
  font-family: 'DM Sans', system-ui, sans-serif;
  background: var(--coal);
  color: var(--text);
  line-height: 1.8;
  font-size: 1.01rem;
  overflow-x: hidden;
}

/* ── HEAT GLOW BACKGROUND ─────────────────────── */
body::before {
  content: '';
  position: fixed; inset: 0;
  background:
    radial-gradient(ellipse 50% 40% at 20% 30%, rgba(249,115,22,.07) 0%, transparent 55%),
    radial-gradient(ellipse 40% 50% at 80% 70%, rgba(239,68,68,.06) 0%, transparent 55%),
    radial-gradient(ellipse 60% 30% at 50% 90%, rgba(251,191,36,.05) 0%, transparent 50%);
  pointer-events: none; z-index: 0;
}

/* ── PROGRESS BAR ─────────────────────────────── */
#progress-bar {
  position: fixed; top: 0; left: 0;
  height: 3px; width: 0%;
  background: linear-gradient(90deg, var(--red2), var(--orange), var(--amber));
  z-index: 1000;
  box-shadow: 0 0 12px var(--orange);
  transition: width .1s linear;
}

/* ── NAV ──────────────────────────────────────── */
nav {
  position: fixed; top: 3px; left: 0; right: 0; z-index: 900;
  background: rgba(10,8,6,.97);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border2);
  display: flex; align-items: center; gap: 2px;
  padding: 0 32px; height: 54px; overflow-x: auto;
}
.nav-brand {
  font-family: 'Syne', sans-serif;
  font-weight: 800; font-size: 1rem;
  color: var(--orange); text-decoration: none;
  letter-spacing: .04em; text-transform: uppercase;
  margin-right: 24px; flex-shrink: 0;
  display: flex; align-items: center; gap: 8px;
}
.nav-brand::before {
  content: '⚡';
  animation: flash 2.5s ease-in-out infinite;
}
@keyframes flash { 0%,100%{opacity:1} 50%{opacity:.3} }
nav a:not(.nav-brand) {
  font-family: 'JetBrains Mono', monospace;
  font-size: .65rem; color: var(--muted);
  text-decoration: none; padding: 5px 10px;
  border-radius: 3px; white-space: nowrap;
  transition: color .2s, background .2s; text-transform: uppercase; letter-spacing: .05em;
}
nav a:not(.nav-brand):hover, nav a.active {
  color: var(--orange); background: rgba(249,115,22,.08);
}

/* ── HERO ─────────────────────────────────────── */
.hero {
  position: relative; padding: 112px 56px 78px;
  overflow: hidden; z-index: 1;
  border-bottom: 1px solid var(--border2);
}
.hero-inner { max-width: 840px; position: relative; z-index: 2; }

.hero-badge {
  font-family: 'JetBrains Mono', monospace;
  font-size: .7rem; letter-spacing: .2em; text-transform: uppercase;
  color: var(--amber); border: 1px solid rgba(251,191,36,.3);
  padding: 5px 14px; border-radius: 2px;
  display: inline-block; margin-bottom: 22px;
  background: rgba(251,191,36,.04);
}
.hero h1 {
  font-family: 'Syne', sans-serif;
  font-weight: 800; font-size: clamp(3rem, 8vw, 7rem);
  line-height: .88; color: var(--text-hi); margin-bottom: 20px;
  letter-spacing: -.02em; text-transform: uppercase;
}
.hero h1 .hot { color: var(--orange); }
.hero h1 .atp { color: var(--amber); font-size: .55em; display: block; letter-spacing: .1em; font-weight: 800; }
.hero p.lead { font-size: 1.06rem; color: var(--text); max-width: 640px; line-height: 1.8; font-weight: 500; }

/* ── STATS ────────────────────────────────────── */
.kpi-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.kpi {
  background: var(--card); border: 1px solid var(--border2);
  border-radius: 3px; padding: 12px 18px; flex: 1; min-width: 120px;
  border-left: 3px solid var(--orange);
}
.kpi.r { border-left-color: var(--red); }
.kpi.a { border-left-color: var(--amber); }
.kpi.g { border-left-color: var(--green); }
.kpi .kv {
  font-family: 'Syne', sans-serif; font-weight: 800;
  font-size: 1.7rem; color: var(--orange); line-height: 1; display: block;
}
.kpi.r .kv { color: var(--red); }
.kpi.a .kv { color: var(--amber); }
.kpi.g .kv { color: var(--green); }
.kpi .kl { font-family:'JetBrains Mono',monospace; font-size:.61rem; color:var(--muted); letter-spacing:.06em; text-transform:uppercase; margin-top:4px; }

/* ── LAYOUT ───────────────────────────────────── */
.container { max-width: 1240px; margin: 0 auto; padding: 60px 40px; position: relative; z-index: 1; }
.two-col { display: grid; grid-template-columns: 1fr 290px; gap: 36px; }
@media (max-width: 940px) { .two-col { grid-template-columns: 1fr; } }

/* ── SECTIONS ─────────────────────────────────── */
.section { margin-bottom: 68px; opacity: 0; transform: translateY(22px); transition: opacity .6s ease, transform .6s ease; }
.section.visible { opacity: 1; transform: none; }
.sec-label { font-family:'JetBrains Mono',monospace; font-size:.65rem; letter-spacing:.18em; text-transform:uppercase; color:var(--amber2); margin-bottom:8px; }
.section h2 {
  font-family: 'Syne', sans-serif; font-weight: 800;
  font-size: 1.9rem; color: var(--text-hi); text-transform: uppercase; letter-spacing: .02em;
  padding-bottom: 12px; border-bottom: 1px solid var(--border2); margin-bottom: 22px; position: relative;
}
.section h2::after { content: ''; position: absolute; bottom: -1px; left: 0; height: 2px; width: 60px; background: var(--orange); }
.section h3 { font-family: 'Syne', sans-serif; font-weight: 700; font-size: 1.05rem; color: var(--orange); text-transform: uppercase; letter-spacing: .04em; margin: 24px 0 10px; }

/* ── STRUCTURE PARTS ──────────────────────────── */
.struct-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 12px; margin: 16px 0; }
.st-card {
  background: var(--card); border: 1px solid var(--border2);
  border-radius: 3px; padding: 16px; transition: transform .2s, border-color .2s;
  border-top: 3px solid var(--orange);
}
.st-card.red   { border-top-color: var(--red); }
.st-card.amber { border-top-color: var(--amber); }
.st-card.green { border-top-color: var(--green); }
.st-card.teal  { border-top-color: var(--teal); }
.st-card:hover { transform: translateY(-3px); }
.st-icon { font-size: 1.6rem; display: block; margin-bottom: 8px; }
.st-name { font-family: 'Syne', sans-serif; font-weight: 700; font-size: .88rem; color: var(--text-hi); text-transform: uppercase; margin-bottom: 5px; letter-spacing: .04em; }
.st-desc { font-size: .83rem; color: var(--text); line-height: 1.55; }

/* ── CARDS ────────────────────────────────────── */
.card {
  background: var(--card); border: 1px solid var(--border2);
  border-radius: 3px; padding: 18px 22px; margin-bottom: 14px;
  transition: border-color .2s, transform .2s;
}
.card:hover { border-color: var(--orange2); transform: translateX(3px); }
.card-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 12px; margin: 16px 0; }

/* ── COMPLEX FLOW ─────────────────────────────── */
.complex-strip { display: flex; gap: 0; margin: 16px 0; overflow-x: auto; border: 1px solid var(--border2); border-radius: 3px; }
.cx {
  flex: 1; min-width: 110px; text-align: center; padding: 14px 8px;
  background: var(--card); position: relative;
}
.cx:not(:last-child)::after { content: '→'; position: absolute; right: -8px; top: 50%; transform: translateY(-50%); color: var(--amber); z-index: 1; font-family: 'JetBrains Mono', monospace; }
.cx-num { font-family: 'Syne', sans-serif; font-weight: 800; font-size: 1.4rem; display: block; margin-bottom: 4px; }
.cx.i   .cx-num { color: var(--orange); }
.cx.ii  .cx-num { color: var(--amber); }
.cx.iii .cx-num { color: var(--red); }
.cx.iv  .cx-num { color: var(--orange2); }
.cx.v   .cx-num { color: var(--green); }
.cx-name { font-family: 'JetBrains Mono', monospace; font-size: .64rem; color: var(--muted); letter-spacing: .04em; text-transform: uppercase; }
.cx-sub { font-size: .76rem; color: var(--text); margin-top: 5px; line-height: 1.4; }

/* ── BOX ──────────────────────────────────────── */
.box { border-radius: 3px; padding: 13px 17px; margin: 14px 0; border-left: 3px solid; font-size: .96rem; }
.box-orange { background: rgba(249,115,22,.05); border-color: var(--orange); }
.box-red    { background: rgba(239,68,68,.05);  border-color: var(--red);    }
.box-amber  { background: rgba(251,191,36,.05); border-color: var(--amber);  }
.box-green  { background: rgba(34,197,94,.05);  border-color: var(--green);  }
.box-teal   { background: rgba(20,184,166,.05); border-color: var(--teal);   }

/* ── TAG ──────────────────────────────────────── */
.tag { display:inline-block; padding:3px 10px; border-radius:3px; font-family:'JetBrains Mono',monospace; font-size:.64rem; letter-spacing:.06em; text-transform:uppercase; margin-bottom:8px; font-weight:500; }
.tag-orange { background:rgba(249,115,22,.1);  color:var(--orange); border:1px solid rgba(249,115,22,.25); }
.tag-red    { background:rgba(239,68,68,.1);   color:var(--red);    border:1px solid rgba(239,68,68,.25);  }
.tag-amber  { background:rgba(251,191,36,.1);  color:var(--amber);  border:1px solid rgba(251,191,36,.25); }
.tag-green  { background:rgba(34,197,94,.1);   color:var(--green);  border:1px solid rgba(34,197,94,.25);  }
.tag-teal   { background:rgba(20,184,166,.1);  color:var(--teal);   border:1px solid rgba(20,184,166,.25); }

/* ── TABLE ────────────────────────────────────── */
table { width:100%; border-collapse:collapse; margin:12px 0; font-size:.91rem; }
th { background:var(--coal3); color:var(--orange); font-family:'Syne',sans-serif; font-weight:700; font-size:.74rem; letter-spacing:.08em; text-transform:uppercase; padding:9px 13px; text-align:left; border-bottom:1px solid var(--border2); }
td { padding:9px 13px; border-bottom:1px solid var(--border); color:var(--text); vertical-align:top; }
tr:hover td { background:rgba(249,115,22,.02); }

/* ── TIMELINE ─────────────────────────────────── */
.timeline { padding-left:28px; position:relative; }
.timeline::before { content:''; position:absolute; left:0; top:6px; bottom:6px; width:2px; background:linear-gradient(to bottom,var(--orange),var(--amber)); }
.tl-item { position:relative; margin-bottom:20px; }
.tl-item::before { content:''; position:absolute; left:-35px; top:7px; width:8px; height:8px; background:var(--amber); border-radius:50%; border:2px solid var(--coal); box-shadow:0 0 5px var(--amber2); }
.tl-yr  { font-family:'JetBrains Mono',monospace; font-size:.76rem; color:var(--orange); font-weight:500; }
.tl-who { font-family:'Syne',sans-serif; font-weight:700; color:var(--text-hi); font-size:1rem; text-transform:uppercase; letter-spacing:.02em; }
.tl-desc { font-size:.89rem; color:var(--text); }

/* ── SIDEBAR ──────────────────────────────────── */
.sidebar { position:sticky; top:68px; }
.sb-card { background:var(--card); border:1px solid var(--border2); border-radius:3px; padding:16px 18px; margin-bottom:12px; }
.sb-card h3 { font-family:'Syne',sans-serif; font-weight:800; font-size:.82rem; color:var(--orange); letter-spacing:.06em; text-transform:uppercase; margin-bottom:10px; padding-bottom:8px; border-bottom:1px solid var(--border); }
.sb-toc a { display:block; padding:5px 8px; font-family:'JetBrains Mono',monospace; font-size:.65rem; color:var(--muted); text-decoration:none; border-radius:3px; transition:color .2s,background .2s; text-transform:uppercase; letter-spacing:.04em; }
.sb-toc a:hover, .sb-toc a.active { color:var(--orange); background:rgba(249,115,22,.07); }

ul { padding-left:22px; } li { margin:5px 0; } ul li::marker { color:var(--orange2); }
strong { color:var(--text-hi); font-weight:600; }
code { font-family:'JetBrains Mono',monospace; background:var(--coal3); color:var(--amber); padding:2px 7px; border-radius:3px; font-size:.87em; }

#back-top { position:fixed; bottom:28px; right:28px; width:44px; height:44px; background:var(--orange); color:var(--coal); border:none; border-radius:3px; cursor:pointer; font-family:'Syne',sans-serif; font-weight:800; font-size:.9rem; display:flex; align-items:center; justify-content:center; opacity:0; pointer-events:none; transition:opacity .3s,transform .3s; z-index:800; }
#back-top.visible { opacity:1; pointer-events:auto; }
#back-top:hover { transform:translateY(-4px); }

footer { border-top:1px solid var(--border2); padding:24px 40px; text-align:center; color:var(--muted); font-family:'JetBrains Mono',monospace; font-size:.7rem; letter-spacing:.08em; position:relative; z-index:1; }

@media (max-width:768px) { .hero { padding:88px 22px 50px; } .container { padding:36px 18px; } nav { padding:0 14px; } }