/* ============================================================
   CITIC — thème dark (GitHub Dark) + effets de scroll
   ============================================================ */
:root{
  --bg:#0d1117;
  --bg-2:#0b0f14;
  --card:#161b22;
  --card-2:#1c2230;
  --border:#30363d;
  --border-soft:#21262d;
  --text:#e6edf3;
  --muted:#8b949e;
  --accent:#58a6ff;
  --accent-2:#1f6feb;
  --accent-glow:rgba(88,166,255,.35);
  --ok:#3fb950;
  --warn:#d29922;
  --radius:16px;
  --radius-sm:10px;
  --maxw:1180px;
  --ease:cubic-bezier(.16,1,.3,1);
}

*{box-sizing:border-box}
html{scroll-behavior:smooth;overflow-x:hidden}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:'Inter',system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
  width:100%;
  max-width:100vw;
}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{line-height:1.15;margin:0 0 .5em;font-weight:800;letter-spacing:-.02em;overflow-wrap:break-word}
p{margin:0 0 1em;color:var(--muted);overflow-wrap:break-word}
em{color:var(--text);font-style:italic}

/* ---------- barre de progression ---------- */
.scroll-progress{
  position:fixed;top:0;left:0;height:3px;width:0;
  background:linear-gradient(90deg,var(--accent),var(--accent-2));
  z-index:100;box-shadow:0 0 12px var(--accent-glow);
  transition:width .1s linear;
}

/* ---------- fond anime ---------- */
.bg-layer{position:fixed;inset:0;z-index:-1;overflow:hidden;max-width:100vw;background:
  radial-gradient(1200px 600px at 80% -10%,rgba(31,111,235,.12),transparent 60%),
  radial-gradient(900px 500px at 0% 20%,rgba(88,166,255,.08),transparent 55%),
  var(--bg);}
#net{position:absolute;inset:0;width:100%;height:100%;opacity:.5}
.glow{position:absolute;border-radius:50%;filter:blur(90px);opacity:.35;pointer-events:none;max-width:100vw}
.glow-1{width:520px;height:520px;background:var(--accent);top:-160px;right:-120px;animation:float1 18s var(--ease) infinite}
.glow-2{width:420px;height:420px;background:#7c3aed;bottom:-140px;left:-120px;opacity:.22;animation:float2 22s var(--ease) infinite}
@keyframes float1{0%,100%{transform:translate(0,0)}50%{transform:translate(-60px,50px)}}
@keyframes float2{0%,100%{transform:translate(0,0)}50%{transform:translate(50px,-40px)}}

/* ---------- nav ---------- */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:50;
  display:flex;align-items:center;justify-content:space-between;
  padding:16px clamp(18px,5vw,48px);
  transition:background .3s var(--ease),backdrop-filter .3s,padding .3s;
}
.nav.scrolled{
  background:rgba(13,17,23,.82);backdrop-filter:blur(12px);
  border-bottom:1px solid var(--border-soft);padding-top:10px;padding-bottom:10px;
}
.brand{display:flex;align-items:center;gap:10px}
.brand-mark{
  display:grid;place-items:center;width:34px;height:34px;border-radius:9px;
  background:linear-gradient(140deg,var(--accent),var(--accent-2));
  color:#fff;font-weight:900;font-size:19px;box-shadow:0 6px 22px var(--accent-glow);
}
.brand-name{font-weight:800;letter-spacing:.22em;font-size:16px}
.nav-links{display:flex;align-items:center;gap:28px}
.nav-links a{color:var(--muted);font-size:14.5px;font-weight:500;transition:color .2s}
.nav-links a:hover{color:var(--text)}
.nav-cta{
  color:var(--text)!important;border:1px solid var(--border);padding:8px 16px;border-radius:9px;
  transition:border-color .2s,box-shadow .2s,background .2s;
}
.nav-cta:hover{border-color:var(--accent);box-shadow:0 0 0 3px rgba(88,166,255,.12);background:rgba(88,166,255,.06)}
.nav-burger{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:6px}
.nav-burger span{width:24px;height:2px;background:var(--text);border-radius:2px;transition:.25s}
.nav-burger.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-burger.open span:nth-child(2){opacity:0}
.nav-burger.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- hero ---------- */
.hero{position:relative;min-height:100vh;display:flex;align-items:center;
  padding:120px clamp(18px,5vw,48px) 80px;}
.hero-inner{max-width:var(--maxw);margin:0 auto;width:100%}
.pill{
  display:inline-flex;align-items:center;gap:9px;font-size:13px;color:var(--muted);
  border:1px solid var(--border);padding:7px 15px;border-radius:100px;
  background:rgba(255,255,255,.02);margin-bottom:26px;letter-spacing:.02em;
}
.pill .dot{width:8px;height:8px;border-radius:50%;background:var(--ok);
  box-shadow:0 0 0 0 rgba(63,185,80,.6);animation:pulse 2s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(63,185,80,.5)}70%{box-shadow:0 0 0 10px rgba(63,185,80,0)}100%{box-shadow:0 0 0 0 rgba(63,185,80,0)}}
.hero-title{font-size:clamp(42px,8vw,92px);font-weight:900;letter-spacing:-.04em;margin:0 0 26px}
.hero-title .grad{background:linear-gradient(100deg,var(--accent),#a371f7 55%,var(--accent));
  -webkit-background-clip:text;background-clip:text;color:transparent;
  background-size:200% auto;animation:shine 6s linear infinite}
@keyframes shine{to{background-position:200% center}}
.hero-sub{font-size:clamp(16px,2.2vw,20px);max-width:640px;color:var(--muted)}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;margin:34px 0 48px}
.btn{display:inline-flex;align-items:center;gap:9px;font-weight:600;font-size:15px;
  padding:14px 24px;border-radius:11px;cursor:pointer;border:1px solid transparent;
  transition:transform .2s var(--ease),box-shadow .25s,background .25s,border-color .25s;}
.btn .arrow{transition:transform .25s var(--ease)}
.btn:hover .arrow{transform:translateX(4px)}
.btn-primary{background:linear-gradient(140deg,var(--accent),var(--accent-2));color:#fff;
  box-shadow:0 10px 30px var(--accent-glow)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 42px var(--accent-glow)}
.btn-ghost{border-color:var(--border);color:var(--text);background:rgba(255,255,255,.02)}
.btn-ghost:hover{border-color:var(--accent);background:rgba(88,166,255,.06);transform:translateY(-2px)}
.btn-lg{padding:17px 34px;font-size:16px}
.hero-stats{display:flex;gap:44px;flex-wrap:wrap;border-top:1px solid var(--border-soft);padding-top:26px}
.stat b{display:block;font-size:clamp(28px,4vw,40px);font-weight:900;color:var(--text);
  font-family:'JetBrains Mono',monospace;letter-spacing:-.02em}
.stat span{font-size:13.5px;color:var(--muted)}
.scroll-hint{position:absolute;bottom:30px;left:50%;transform:translateX(-50%);
  width:26px;height:44px;border:2px solid var(--border);border-radius:14px;display:grid;place-items:start center;padding-top:8px}
.scroll-hint span{width:4px;height:8px;border-radius:2px;background:var(--accent);animation:scrollDot 1.8s infinite}
@keyframes scrollDot{0%{opacity:0;transform:translateY(-4px)}40%{opacity:1}80%{opacity:0;transform:translateY(12px)}100%{opacity:0}}

/* ---------- marquee ---------- */
.marquee{overflow:hidden;border-top:1px solid var(--border-soft);border-bottom:1px solid var(--border-soft);
  background:rgba(255,255,255,.015);padding:16px 0}
.marquee-track{display:flex;gap:26px;white-space:nowrap;width:max-content;
  animation:scrollLeft 32s linear infinite;color:var(--muted);font-size:14px;font-weight:500;
  font-family:'JetBrains Mono',monospace;letter-spacing:.04em}
.marquee-track span:nth-child(even){color:var(--accent)}
@keyframes scrollLeft{to{transform:translateX(-50%)}}

/* ---------- sections ---------- */
.section{max-width:var(--maxw);margin:0 auto;padding:clamp(70px,11vw,140px) clamp(18px,5vw,48px)}
.section-head{max-width:720px;margin-bottom:60px}
.eyebrow{font-family:'JetBrains Mono',monospace;font-size:13.5px;color:var(--accent);
  letter-spacing:.06em;display:block;margin-bottom:14px}
.section-head h2{font-size:clamp(28px,4.5vw,46px)}
.section-lead{font-size:clamp(15px,2vw,18px);max-width:600px}

/* ---------- cartes ---------- */
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:22px}
.card{
  position:relative;background:linear-gradient(180deg,var(--card),var(--card-2));
  border:1px solid var(--border);border-radius:var(--radius);padding:34px 30px;
  transition:transform .35s var(--ease),border-color .3s,box-shadow .35s;overflow:hidden;
}
.card::before{content:"";position:absolute;inset:0;border-radius:inherit;padding:1px;
  background:linear-gradient(140deg,rgba(88,166,255,.5),transparent 40%);
  -webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);
  -webkit-mask-composite:xor;mask-composite:exclude;opacity:0;transition:opacity .35s}
.card:hover{transform:translateY(-6px);border-color:var(--accent);box-shadow:0 20px 50px rgba(0,0,0,.45)}
.card:hover::before{opacity:1}
.card-ic{font-size:32px;margin-bottom:16px}
.card h3{font-size:22px;margin-bottom:10px}
.card-list{list-style:none;padding:0;margin:18px 0 0;display:grid;gap:9px}
.card-list li{position:relative;padding-left:24px;font-size:14.5px;color:var(--muted)}
.card-list li::before{content:"→";position:absolute;left:0;color:var(--accent);font-weight:700}

/* ---------- etapes ---------- */
.steps{list-style:none;padding:0;margin:0;display:grid;gap:16px}
.step{display:grid;grid-template-columns:auto 1fr;gap:26px;align-items:start;
  background:linear-gradient(180deg,var(--card),transparent);border:1px solid var(--border);
  border-radius:var(--radius);padding:30px 32px;transition:border-color .3s,transform .35s var(--ease)}
.step:hover{border-color:var(--accent);transform:translateX(6px)}
.step-num{font-family:'JetBrains Mono',monospace;font-size:30px;font-weight:600;
  color:var(--accent);opacity:.85;line-height:1}
.step h3{font-size:20px;margin-bottom:6px}
.step p{margin:0;font-size:15px}

/* ---------- timeline (parcours) ---------- */
.timeline{display:grid;grid-template-columns:1fr 1fr;gap:40px}
.tl-title{font-size:15px;text-transform:uppercase;letter-spacing:.12em;color:var(--muted);
  margin-bottom:22px;font-weight:600;font-family:'JetBrains Mono',monospace}
.tl-item{position:relative;padding-left:28px;padding-bottom:30px;
  border-left:1px solid var(--border)}
.tl-item:last-child{border-left-color:transparent;padding-bottom:0}
.tl-dot{position:absolute;left:-6px;top:4px;width:11px;height:11px;border-radius:50%;
  background:var(--accent);box-shadow:0 0 0 4px rgba(88,166,255,.15)}
.tl-body h4{font-size:18px;margin-bottom:3px}
.tl-org{display:block;font-size:14.5px;color:var(--accent);font-weight:500;margin-bottom:2px}
.tl-date{display:block;font-size:13px;color:var(--muted);font-family:'JetBrains Mono',monospace;margin-bottom:8px}
.tl-body p{margin:0;font-size:14.5px}

/* ---------- competences (chips) ---------- */
.skills{display:flex;flex-wrap:wrap;gap:12px}
.chip{
  display:inline-flex;align-items:center;gap:8px;font-size:14.5px;font-weight:500;
  padding:11px 20px;border-radius:100px;color:var(--text);
  border:1px solid var(--border);background:linear-gradient(180deg,var(--card),var(--card-2));
  transition:transform .25s var(--ease),border-color .25s,box-shadow .25s,color .25s;
}
.chip:hover{transform:translateY(-3px);border-color:var(--accent);color:var(--accent);
  box-shadow:0 8px 24px rgba(88,166,255,.15)}

/* ---------- split expertise ---------- */
.section-split{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.section-split>*{min-width:0}
.split-text{min-width:0}
.split-text h2{font-size:clamp(26px,4vw,42px)}
.value-list{display:grid;gap:18px;margin-top:30px}
.value{border-left:2px solid var(--accent);padding-left:18px}
.value h4{font-size:17px;margin-bottom:4px}
.value p{margin:0;font-size:14.5px}

/* ---------- terminal ---------- */
.terminal{background:#010409;border:1px solid var(--border);border-radius:14px;
  box-shadow:0 24px 60px rgba(0,0,0,.55);overflow:hidden}
.terminal-bar{display:flex;align-items:center;gap:8px;padding:12px 16px;
  background:#161b22;border-bottom:1px solid var(--border-soft)}
.t-dot{width:11px;height:11px;border-radius:50%}
.t-dot.r{background:#ff5f57}.t-dot.y{background:#febc2e}.t-dot.g{background:#28c840}
.t-title{margin-left:10px;font-family:'JetBrains Mono',monospace;font-size:12.5px;color:var(--muted)}
.terminal-body{margin:0;padding:22px 20px;font-family:'JetBrains Mono',monospace;
  font-size:13.5px;line-height:1.85;color:#c9d1d9;overflow-x:auto}
.t-c{color:var(--accent)}.t-ok{color:var(--ok)}.t-warn{color:var(--warn)}
.t-n{color:#a371f7}.cursor{animation:blink 1.1s steps(1) infinite}
@keyframes blink{50%{opacity:0}}

/* ---------- CTA ---------- */
.cta-section{max-width:1000px}
.cta-box{text-align:center;background:linear-gradient(180deg,var(--card),var(--bg-2));
  border:1px solid var(--border);border-radius:24px;padding:clamp(40px,7vw,72px) clamp(24px,5vw,60px);
  position:relative;overflow:hidden}
.cta-box::after{content:"";position:absolute;top:-50%;left:50%;transform:translateX(-50%);
  width:600px;height:600px;background:radial-gradient(circle,var(--accent-glow),transparent 65%);opacity:.35;pointer-events:none}
.cta-box h2{font-size:clamp(24px,4vw,38px);position:relative}
.cta-box p{font-size:17px;position:relative}
.cta-box .btn{position:relative;margin-top:14px}
.cta-note{font-size:13.5px;margin:22px 0 0;position:relative}
.cta-link{color:var(--accent);border-bottom:1px solid transparent;transition:border-color .2s}
.cta-link:hover{border-color:var(--accent)}

/* ---------- footer ---------- */
.footer{border-top:1px solid var(--border-soft);background:var(--bg-2);padding:56px clamp(18px,5vw,48px) 40px}
.footer-inner{max-width:var(--maxw);margin:0 auto;text-align:center;display:grid;gap:14px;justify-items:center}
.footer-tag{color:var(--muted);font-size:14.5px;margin:0}
.footer-links{display:flex;gap:24px;margin:8px 0}
.footer-links a{color:var(--muted);font-size:14px;transition:color .2s}
.footer-links a:hover{color:var(--accent)}
.footer-copy{color:#6e7681;font-size:13px;margin:14px 0 0}

/* ---------- reveal au scroll ---------- */
.reveal{opacity:0;transform:translateY(30px);transition:opacity .8s var(--ease),transform .8s var(--ease)}
.reveal.in{opacity:1;transform:none}
.reveal[data-delay="1"]{transition-delay:.08s}
.reveal[data-delay="2"]{transition-delay:.16s}
.reveal[data-delay="3"]{transition-delay:.24s}
.reveal[data-delay="4"]{transition-delay:.32s}
.reveal[data-delay="5"]{transition-delay:.40s}

/* ---------- responsive ---------- */
@media(max-width:900px){
  .section-split{grid-template-columns:1fr;gap:40px}
  .timeline{grid-template-columns:1fr;gap:28px}
  .nav-links{
    position:fixed;top:0;right:0;height:100vh;width:min(78vw,320px);
    flex-direction:column;justify-content:center;gap:30px;
    background:rgba(13,17,23,.97);backdrop-filter:blur(16px);
    border-left:1px solid var(--border);transform:translateX(100%);
    transition:transform .35s var(--ease);padding:40px}
  .nav-links.open{transform:none}
  .nav-links a{font-size:19px}
  .nav-burger{display:flex;z-index:60}
}
@media(max-width:560px){
  .hero-stats{gap:28px}
  .card{padding:28px 22px}
  .step{padding:24px 20px;gap:18px}
  .step-num{font-size:24px}
  .hero-cta .btn{flex:1 1 100%;justify-content:center}
}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition-duration:.001s!important}
  .reveal{opacity:1;transform:none}
}