:root{
  --ink:#0E1016; --surface:#14171F; --surface-2:#1A1E2B;
  --line:rgba(255,255,255,.08); --line-2:rgba(255,255,255,.14);
  --text:#E7E9F0; --muted:#9AA0B2; --faint:#646A7C;
  --peri:#8B85F0; --peri-bright:#A8A2FF; --peri-dim:rgba(139,133,240,.12);
  --signal:#56D364;
  --display:'Space Grotesk',system-ui,sans-serif;
  --body:'IBM Plex Sans',system-ui,sans-serif;
  --mono:'JetBrains Mono',ui-monospace,monospace;
  --r:14px; --r-sm:10px; --maxw:1080px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--ink);color:var(--text);font-family:var(--body);font-size:16px;line-height:1.7;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 28px}
.mono{font-family:var(--mono)}
.eyebrow{font-family:var(--mono);font-size:13px;color:var(--peri);letter-spacing:.02em}
h1,h2,h3{font-family:var(--display);font-weight:500;line-height:1.15}
section{padding:84px 0;border-top:1px solid var(--line)}
.sec-title{font-size:clamp(1.5rem,3.2vw,2rem);margin:8px 0 36px}

/* header */
header{position:sticky;top:0;z-index:50;background:var(--header-bg);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:62px}
.brand{display:flex;align-items:center;gap:10px;font-family:var(--mono);font-weight:500}
.brand .glyph{display:inline-flex;align-items:center;justify-content:center;width:30px;height:30px;border-radius:8px;background:var(--peri);color:#23205c;font-weight:600}
.nav-links{display:flex;align-items:center;gap:24px}
.nav-links a{font-size:14px;color:var(--muted);transition:color .15s}
.nav-links a:hover{color:var(--text)}
.nav-actions{display:flex;align-items:center;gap:10px}
.btn{font-family:var(--body);font-size:14px;padding:8px 16px;border-radius:var(--r-sm);border:1px solid var(--line-2);background:transparent;color:var(--text);cursor:pointer;transition:all .15s;white-space:nowrap}
.btn:hover{border-color:var(--peri);color:var(--peri-bright)}
.btn-primary{background:var(--peri);border-color:var(--peri);color:#1a1840;font-weight:500}
.btn-primary:hover{background:var(--peri-bright);border-color:var(--peri-bright);color:#1a1840}
.btn-term{font-family:var(--mono);font-size:13px}
.lang{font-family:var(--mono);font-size:12px;color:var(--muted);background:transparent;border:1px solid var(--line);border-radius:8px;padding:6px 9px;cursor:pointer}
.lang:hover{color:var(--text);border-color:var(--line-2)}
.menu-btn{display:none;background:none;border:1px solid var(--line);border-radius:8px;color:var(--text);width:38px;height:34px;cursor:pointer;font-size:18px}

/* hero */
.hero{padding:88px 0 64px;border-top:none}
.hero-grid{display:grid;grid-template-columns:1.25fr .9fr;gap:48px;align-items:center}
.hero h1{font-size:clamp(2.4rem,5.2vw,3.7rem);font-weight:600;letter-spacing:-.02em;margin:14px 0 6px}
.hero .role{font-size:clamp(1.05rem,2.2vw,1.35rem);color:var(--peri-bright);font-family:var(--mono);font-weight:400;margin-bottom:20px}
.hero .thesis{font-size:1.08rem;color:var(--muted);max-width:46ch;margin-bottom:28px}
.hero-cta{display:flex;gap:12px;flex-wrap:wrap}
.panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);overflow:hidden}
.panel-bar{display:flex;align-items:center;gap:7px;padding:11px 14px;border-bottom:1px solid var(--line);background:var(--surface-2)}
.dot{width:11px;height:11px;border-radius:50%}
.panel-body{padding:16px 18px;font-family:var(--mono);font-size:13.5px}
.panel-cmd{color:var(--faint);margin-bottom:12px}
.panel-cmd b{color:var(--peri);font-weight:500}
.st-row{display:flex;align-items:center;justify-content:space-between;padding:7px 0}
.st-row .lbl{color:var(--muted)}
.st-ok{display:inline-flex;align-items:center;gap:7px;color:var(--signal)}
.st-ok .led{width:7px;height:7px;border-radius:50%;background:var(--signal);box-shadow:0 0 0 0 rgba(86,211,100,.6)}
.zero{color:var(--peri-bright);font-weight:500}

/* stats */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;margin-top:46px}
.stat{background:var(--ink);padding:22px 24px}
.stat .n{font-family:var(--display);font-size:2rem;font-weight:600;letter-spacing:-.01em}
.stat .l{font-family:var(--mono);font-size:12.5px;color:var(--muted);margin-top:2px}

/* about */
.about-body{font-size:1.12rem;color:var(--muted);max-width:62ch}
.about-body strong{color:var(--text);font-weight:500}

/* skills */
.skill-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.skill-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:22px 24px}
.skill-card h3{font-size:1rem;margin-bottom:14px;display:flex;align-items:center;gap:9px}
.skill-card h3 .bar{width:14px;height:2px;background:var(--peri)}
.tags{display:flex;flex-wrap:wrap;gap:8px}
.tag{font-family:var(--mono);font-size:12.5px;color:var(--muted);background:var(--peri-dim);border:1px solid transparent;border-radius:7px;padding:5px 10px}

/* timeline */
.tl{position:relative;padding-left:30px}
.tl::before{content:"";position:absolute;left:6px;top:6px;bottom:6px;width:1px;background:var(--line-2)}
.tl-item{position:relative;padding-bottom:34px}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{content:"";position:absolute;left:-27px;top:6px;width:11px;height:11px;border-radius:50%;background:var(--ink);border:2px solid var(--peri)}
.tl-head{display:flex;flex-wrap:wrap;align-items:baseline;justify-content:space-between;gap:6px}
.tl-role{font-family:var(--display);font-size:1.12rem;font-weight:500}
.tl-period{font-family:var(--mono);font-size:12.5px;color:var(--peri-bright)}
.tl-org{color:var(--muted);font-size:.95rem;margin:2px 0 10px}
.tl-points{list-style:none;display:flex;flex-direction:column;gap:6px}
.tl-points li{position:relative;padding-left:18px;color:var(--muted);font-size:.97rem}
.tl-points li::before{content:"›";position:absolute;left:0;color:var(--peri)}

/* education */
.edu-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.edu-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:22px 24px}
.edu-card .p{font-family:var(--display);font-weight:500;font-size:1.05rem}
.edu-card .s{color:var(--muted);font-size:.95rem;margin-top:3px}
.edu-card .d{font-family:var(--mono);font-size:12.5px;color:var(--peri-bright);margin-top:10px}

/* projects */
.proj-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.proj-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:24px;display:flex;flex-direction:column;transition:border-color .15s,transform .15s}
.proj-card:hover{border-color:var(--peri);transform:translateY(-2px)}
.proj-card.feat{border-color:var(--line-2);background:linear-gradient(180deg,var(--peri-dim),transparent 60%),var(--surface)}
.proj-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px}
.proj-name{font-family:var(--display);font-weight:500;font-size:1.15rem}
.proj-badge{font-family:var(--mono);font-size:11px;color:var(--peri-bright);border:1px solid var(--peri);border-radius:6px;padding:2px 8px}
.proj-desc{color:var(--muted);font-size:.97rem;margin-bottom:16px;flex:1}
.proj-tags{display:flex;flex-wrap:wrap;gap:7px;margin-bottom:14px}
.proj-link{font-family:var(--mono);font-size:13px;color:var(--peri-bright);display:inline-flex;align-items:center;gap:6px}

/* contact */
.contact-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:48px}
.field{margin-bottom:16px}
.field label{display:block;font-family:var(--mono);font-size:12.5px;color:var(--muted);margin-bottom:7px}
.field input,.field textarea{width:100%;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-sm);color:var(--text);font-family:var(--body);font-size:15px;padding:11px 13px;transition:border-color .15s}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--peri)}
.field textarea{resize:vertical;min-height:120px}
.hp{position:absolute;left:-9999px;width:1px;height:1px;opacity:0}
.form-msg{font-family:var(--mono);font-size:13px;margin-top:6px;min-height:18px}
.info-row{display:flex;align-items:center;gap:13px;padding:13px 0;border-bottom:1px solid var(--line)}
.info-row:last-child{border-bottom:none}
.info-row .ic{flex:0 0 38px;width:38px;height:38px;border-radius:9px;background:var(--peri-dim);display:flex;align-items:center;justify-content:center;color:var(--peri-bright)}
.info-row .k{font-family:var(--mono);font-size:11.5px;color:var(--faint)}
.info-row .v{font-size:.95rem}

/* footer */
footer{border-top:1px solid var(--line);padding:30px 0}
.foot{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px}
.foot .sig{font-family:var(--mono);font-size:12.5px;color:var(--faint)}
.foot .sig b{color:var(--peri);font-weight:400}

svg.ic-svg{width:18px;height:18px;stroke:currentColor;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}

@media (prefers-reduced-motion: no-preference){
  .st-ok .led{animation:pulse 2.2s ease-out infinite}
  @keyframes pulse{0%{box-shadow:0 0 0 0 rgba(86,211,100,.5)}70%{box-shadow:0 0 0 7px rgba(86,211,100,0)}100%{box-shadow:0 0 0 0 rgba(86,211,100,0)}}
  .reveal{opacity:0;transform:translateY(14px);transition:opacity .6s ease,transform .6s ease}
  .reveal.in{opacity:1;transform:none}
}

@media (max-width:860px){
  .hero-grid,.contact-grid{grid-template-columns:1fr;gap:32px}
  .skill-grid,.edu-grid,.proj-grid{grid-template-columns:1fr}
  .stats{grid-template-columns:repeat(2,1fr)}
  .nav-links{display:none}
  .menu-btn{display:block}
}

/* --- additions for CSP-safe integration (no inline styles) --- */
.nav{position:relative}
.dot.red{background:#ff5f57}
.dot.amber{background:#febc2e}
.dot.green{background:#28c840}
.ic-svg.sm{width:15px;height:15px}
.form-msg.info{color:var(--muted)}
.form-msg.ok{color:var(--signal)}
.form-msg.err{color:#ff7b72}
@media (max-width:860px){
  .nav-links.open{display:flex;position:absolute;top:100%;left:0;right:0;flex-direction:column;gap:14px;
    background:var(--ink);border-bottom:1px solid var(--line);padding:18px 28px}
}

/* --- thème clair / sombre (data-theme sur <html>) --- */
:root, html[data-theme="dark"]{ --header-bg:rgba(14,16,22,.82); }
html[data-theme="light"]{
  --ink:#F6F7FB; --surface:#FFFFFF; --surface-2:#EEF0F6;
  --line:rgba(20,22,38,.10); --line-2:rgba(20,22,38,.16);
  --text:#1A1D29; --muted:#586074; --faint:#888FA1;
  --peri:#6F67D6; --peri-bright:#5249C0; --peri-dim:rgba(111,103,214,.12);
  --signal:#1F9D4D;
  --header-bg:rgba(246,247,251,.85);
}
.lang{display:inline-flex;align-items:center;justify-content:center}
.lang svg{display:block}

/* --- modale détail projet --- */
.btn{display:inline-flex;align-items:center;gap:7px}
.proj-card{cursor:pointer}
body.modal-open{overflow:hidden}
.modal[hidden]{display:none}
.modal{position:fixed;inset:0;z-index:100;display:flex;align-items:center;justify-content:center;padding:24px;
  opacity:0;visibility:hidden;transition:opacity .2s ease, visibility .2s ease}
.modal.open{opacity:1;visibility:visible}
.modal-backdrop{position:absolute;inset:0;background:rgba(0,0,0,.62)}
.modal-dialog{position:relative;z-index:1;background:var(--surface);border:1px solid var(--line-2);
  border-radius:16px;max-width:680px;width:100%;max-height:86vh;overflow:auto;padding:30px 32px;
  transform:translateY(12px) scale(.98);transition:transform .24s cubic-bezier(.2,.8,.2,1)}
.modal.open .modal-dialog{transform:none}
.modal-close{position:absolute;top:12px;right:14px;width:34px;height:34px;border:1px solid var(--line);
  background:transparent;color:var(--muted);border-radius:8px;cursor:pointer;font-size:20px;line-height:1}
.modal-close:hover{color:var(--text);border-color:var(--line-2)}
.pm-head{display:flex;align-items:center;gap:12px;margin-bottom:14px;padding-right:36px}
.pm-title{font-size:1.5rem}
.pm-summary{color:var(--muted);font-size:1.02rem;margin-bottom:22px}
.pm-section{margin-bottom:22px}
.pm-h{font-size:.9rem;color:var(--peri-bright);font-family:var(--mono);margin-bottom:11px}
.pm-stack-row{display:grid;grid-template-columns:130px 1fr;gap:12px;align-items:start;margin-bottom:10px}
.pm-stack-label{font-size:13px;color:var(--muted);font-family:var(--mono);padding-top:5px}
.pm-text{color:var(--muted);font-size:.98rem}
.pm-img{width:100%;border-radius:10px;border:1px solid var(--line);margin-top:12px}
.pm-links{display:flex;flex-wrap:wrap;gap:10px}
@media (max-width:560px){ .pm-stack-row{grid-template-columns:1fr;gap:4px} }
@media (prefers-reduced-motion: reduce){
  .modal,.modal-dialog{transition:none}
  .modal-dialog{transform:none}
}
/* ---- certifications (badges) ---- */
.cert-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(190px,1fr));gap:16px}
.cert-badge{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:22px 18px;display:flex;flex-direction:column;align-items:center;text-align:center;gap:8px;transition:transform .15s,border-color .15s}
.cert-badge:hover{transform:translateY(-3px);border-color:var(--peri)}
.cert-ic{width:52px;height:52px;border-radius:14px;display:flex;align-items:center;justify-content:center;background:var(--peri-dim);color:var(--peri-bright);margin-bottom:4px}
svg.cert-ic-svg{width:28px;height:28px;stroke:currentColor;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.cert-badge .cert-name{font-family:var(--display);font-weight:500;font-size:.98rem;line-height:1.3}
.cert-badge .cert-org{color:var(--muted);font-size:.85rem;font-family:var(--mono)}
.cert-verify{display:inline-flex;align-items:center;gap:5px;margin-top:6px;font-family:var(--mono);font-size:12px;color:var(--peri-bright);text-decoration:none;border:1px solid var(--line);border-radius:8px;padding:5px 11px;transition:all .15s}
.cert-verify:hover{border-color:var(--peri);background:var(--peri-dim)}
@media (max-width:720px){.cert-grid{grid-template-columns:repeat(auto-fill,minmax(150px,1fr))}}