/* ===== 1. TOKENS ===== */
:root{
  /* Couleurs */
  --ink: #0B0C12;
  --ink-2: #101119;
  --surface: #15161F;
  --surface-2: #1D1F2B;
  --paper: #EDEAE1;
  --muted: #9A96A8;
  --violet: #8B7CFF;
  --violet-soft: #8B7CFF33;
  --mint: #3FE0C5;
  --line: rgba(237,234,225,0.12);
  --line-strong: rgba(237,234,225,0.22);

  /* Typo */
  --f-display: "Fraunces", serif;
  --f-body: "Inter", -apple-system, sans-serif;
  --f-mono: "JetBrains Mono", monospace;

  /* Échelle */
  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2.5rem;
  --space-5: 4rem;
  --space-6: 7rem;
  --radius: 14px;
  --radius-sm: 8px;
  --max-w: 1180px;
}

*{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior: auto; }
  *{ animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
}

body{
  margin:0;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--f-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

::selection{ background: var(--violet); color: var(--ink); }

a{ color: inherit; text-decoration: none; }
img{ max-width:100%; display:block; }

.wrap{
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--space-3);
}

h1,h2,h3{
  font-family: var(--f-display);
  font-weight: 600;
  letter-spacing: -0.01em;
  margin: 0;
}

.eyebrow{
  font-family: var(--f-mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--mint);
  display: flex;
  align-items: center;
  gap: 0.6em;
}
.eyebrow::before{
  content:"";
  width: 22px; height: 1px;
  background: var(--mint);
  display:inline-block;
}

:focus-visible{
  outline: 2px solid var(--mint);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ===== 2. NAVIGATION ===== */
header.site-nav{
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(11,12,18,0.72);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav-inner{
  max-width: var(--max-w);
  margin: 0 auto;
  padding: var(--space-2) var(--space-3);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  background: var(--ink);
}
.brand{
  font-family: var(--f-mono);
  font-weight: 600;
  font-size: 1rem;
  letter-spacing: -0.02em;
}
.brand span{ color: var(--violet); }

nav.nav-links{
  display: flex;
  gap: var(--space-4);
  font-family: var(--f-mono);
  font-size: 0.85rem;
  z-index: -1;
}
nav.nav-links a{
  color: var(--muted);
  transition: color .2s ease;
  position: relative;
}
nav.nav-links a:hover{ color: var(--paper); }

.nav-actions{
  display:flex;
  align-items:center;
  gap: var(--space-1);
}

/* --- Sélecteur de langue --- */
.lang-switch{
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  padding: 3px;
  gap: 2px;
  margin-right: var(--space-1);
}
.lang-btn{
  font-family: var(--f-mono);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  background: none;
  border: none;
  color: var(--muted);
  padding: 0.35em 0.65em;
  border-radius: 999px;
  cursor: pointer;
  transition: background .18s ease, color .18s ease;
}
.lang-btn:hover{ color: var(--paper); }
.lang-btn.active{
  background: var(--paper);
  color: var(--ink);
}

.btn{
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  font-family: var(--f-mono);
  font-size: 0.82rem;
  font-weight: 500;
  padding: 0.6em 1.1em;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  background: transparent;
  color: var(--paper);
  cursor: pointer;
  transition: transform .18s ease, background .18s ease, border-color .18s ease;
  white-space: nowrap;
}
.btn:hover{ transform: translateY(-2px); border-color: var(--paper); }
.btn svg, .icon-btn svg{
  width: 14px;
  height: 14px;
  flex-shrink: 0;
  stroke: currentColor;
}
.btn-primary{
  background: var(--paper);
  color: var(--ink);
  border-color: var(--paper);
}
.btn-primary:hover{ background: var(--mint); border-color: var(--mint); }
.btn-ghost{ border-color: transparent; padding-inline: 0.7em; }

.menu-toggle{
  display:none;
  background:none;
  border:none;
  color: var(--paper);
  cursor:pointer;
  padding: 0.4em;
  align-items: center;
  justify-content: center;
}
.menu-toggle svg{
  width: 22px;
  height: 22px;
  stroke: currentColor;
}

/* ===== 3. HERO ===== */
.hero{
  position: relative;
  min-height: 100svh;
  display:flex;
  align-items:center;
  padding-top: var(--space-6);
  overflow: hidden;
}
#hero-canvas{
  position:absolute;
  inset:0;
  width:100%; height:100%;
  opacity: 0.85;
}
.hero-inner{
  position: relative;
  z-index: 2;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--space-3);
  width:100%;
}
.hero h1{
  font-size: clamp(2.6rem, 7vw, 5.6rem);
  line-height: 0.98;
  margin-top: var(--space-2);
  max-width: 16ch;
}
.hero h1 em{
  font-style: italic;
  font-weight: 400;
  color: var(--mint);
}
.hero-role{
  font-family: var(--f-mono);
  color: var(--muted);
  font-size: clamp(1rem, 2vw, 1.2rem);
  margin-top: var(--space-2);
  max-width: 46ch;
}
.hero-actions{
  display:flex;
  gap: var(--space-2);
  margin-top: var(--space-4);
  flex-wrap: wrap;
}
.scroll-cue{
  position:absolute;
  bottom: var(--space-4);
  left: var(--space-3);
  font-family: var(--f-mono);
  font-size: 0.75rem;
  color: var(--muted);
  display:flex;
  align-items:center;
  gap: 0.6em;
  z-index:2;
}
.scroll-cue .dot{
  width:6px;height:6px;border-radius:50%;
  background: var(--mint);
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse{ 0%,100%{opacity:.3} 50%{opacity:1} }

/* ===== 4. SECTIONS génériques ===== */
section{
  padding: var(--space-6) 0;
  border-top: 1px solid var(--line);
}
.section-head{
  display:flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: var(--space-3);
  margin-bottom: var(--space-5);
  flex-wrap: wrap;
}
.section-head h2{
  font-size: clamp(1.9rem, 4vw, 2.8rem);
  margin-top: var(--space-1);
}
.section-note{
  font-family: var(--f-mono);
  font-size: 0.85rem;
  color: var(--muted);
  max-width: 32ch;
  text-align: right;
}

/* ===== 5. À PROPOS ===== */
.about-grid{
  display:grid;
  grid-template-columns: 1fr 1.5fr;
  gap: var(--space-5);
  align-items: start;
}
.avatar-frame{
  aspect-ratio: 4/5;
  border-radius: var(--radius);
  background:
    linear-gradient(160deg, var(--surface-2), var(--surface));
  border: 1px solid var(--line);
  position: relative;
  overflow:hidden;
  display:flex;
  align-items:center;
  justify-content:center;
  font-family: var(--f-mono);
  color: var(--muted);
  font-size: 0.8rem;
  text-align:center;
  padding: var(--space-2);
}
.avatar-frame::before{
  content:"";
  position:absolute; inset:0;
  background: radial-gradient(circle at 30% 20%, var(--violet-soft), transparent 60%);
}
.about-text p{
  font-size: 1.08rem;
  color: var(--paper);
  max-width: 62ch;
}
.about-text p + p{ margin-top: var(--space-2); }
.about-meta{
  margin-top: var(--space-4);
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-3);
  border-top: 1px solid var(--line);
  padding-top: var(--space-3);
}
.about-meta dt{
  font-family: var(--f-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--mint);
  margin-bottom: 0.4em;
}
.about-meta dd{ margin:0; color: var(--paper); }

/* ===== 6. STACK / TECHNOLOGIES ===== */
.stack-groups{
  display:grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: var(--space-4);
}
.stack-group h3{
  font-family: var(--f-mono);
  font-size: 0.9rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: .06em;
  font-weight: 500;
  margin-bottom: var(--space-2);
}
.chip-row{
  display:flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.chip{
  font-family: var(--f-mono);
  font-size: 0.82rem;
  padding: 0.45em 0.85em;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line-strong);
  color: var(--paper);
  background: var(--surface);
  transition: border-color .18s ease, transform .18s ease;
}
.chip:hover{ border-color: var(--mint); transform: translateY(-2px); }

/* ===== 7. PROJETS (composant réutilisable) ===== */
.project-grid{
  display:grid;
  gap: var(--space-3);
}
.project-card{
  border: 1px solid var(--line);
  background: var(--surface);
  border-radius: var(--radius);
  padding: var(--space-4);
  display:grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-3) var(--space-4);
  transition: border-color .2s ease;
}
.project-card:hover{ border-color: var(--line-strong); }
.project-index{
  font-family: var(--f-mono);
  color: var(--violet);
  font-size: 0.85rem;
  padding-top: 0.3em;
}
.project-body{ min-width:0; }
.project-top{
  display:flex;
  justify-content: space-between;
  align-items:flex-start;
  gap: var(--space-2);
  flex-wrap: wrap;
}
.project-title{
  font-family: var(--f-display);
  font-size: 1.5rem;
  font-weight: 600;
}
.project-type{
  font-family: var(--f-mono);
  font-size: 0.72rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: .05em;
  margin-top: 0.3em;
}
.project-links{
  display:flex;
  gap: 0.5rem;
  flex-shrink:0;
}
.icon-btn{
  display:inline-flex;
  align-items:center;
  gap: 0.4em;
  font-family: var(--f-mono);
  font-size: 0.78rem;
  padding: 0.45em 0.8em;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  transition: background .18s ease, border-color .18s ease;
}
.icon-btn:hover{ background: var(--surface-2); border-color: var(--paper); }
.project-desc{
  margin-top: var(--space-2);
  color: var(--paper);
  max-width: 68ch;
}
.project-tech{
  display:flex;
  flex-wrap:wrap;
  gap: 0.4rem;
  margin-top: var(--space-2);
}
.tech-tag{
  font-family: var(--f-mono);
  font-size: 0.72rem;
  color: var(--mint);
  background: #3FE0C51A;
  border: 1px solid #3FE0C540;
  padding: 0.25em 0.6em;
  border-radius: 6px;
}
details.project-more{
  margin-top: var(--space-3);
  border-top: 1px dashed var(--line);
  padding-top: var(--space-2);
}
details.project-more summary{
  cursor: pointer;
  font-family: var(--f-mono);
  font-size: 0.8rem;
  color: var(--muted);
  list-style: none;
  display:flex;
  align-items:center;
  gap: 0.5em;
}
details.project-more summary::-webkit-details-marker{ display:none; }
details.project-more summary::before{
  content: "+";
  color: var(--mint);
  font-size: 1rem;
  line-height:1;
}
details.project-more[open] summary::before{ content: "–"; }
.more-grid{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3);
  margin-top: var(--space-2);
}
.more-block h4{
  font-family: var(--f-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: .05em;
  color: var(--violet);
  margin: 0 0 0.5em;
}
.more-block p{ margin:0; color: var(--muted); font-size: 0.92rem; }

/* ===== 8. CONTACT / FOOTER ===== */
.contact-cta{
  text-align:center;
  padding: var(--space-6) 0;
}
.contact-cta h2{
  font-size: clamp(2rem, 6vw, 3.6rem);
  max-width: 20ch;
  margin: var(--space-2) auto 0;
}
.contact-cta .hero-actions{ justify-content:center; margin-top: var(--space-4); }
.contact-cta .eyebrow{ justify-content:center; }
.contact-cta .eyebrow::before{ display:none; }

footer{
  border-top: 1px solid var(--line);
  padding: var(--space-3) 0;
  font-family: var(--f-mono);
  font-size: 0.78rem;
  color: var(--muted);
  display:flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-1);

  .logos {
    display: flex;
    gap: 1rem;
  }
}
footer a:hover{ color: var(--paper); }

/* ===== 9. RESPONSIVE ===== */
@media (max-width: 860px){
  .about-grid{ grid-template-columns: 1fr; }
  .about-meta{ grid-template-columns: 1fr 1fr; }
  .more-grid{ grid-template-columns: 1fr; }
}

@media (max-width: 720px){
  nav.nav-links{
    position: fixed;
    top: 60px; left:0; right:0;
    background: var(--ink-2);
    border-bottom: 1px solid var(--line);
    flex-direction: column;
    padding: var(--space-3);
    gap: var(--space-2);
    transform: translateY(-130%);
    transition: transform .25s ease;
  }
  nav.nav-links.open{ transform: translateY(0); }
  .menu-toggle{ display:inline-flex; }
  .nav-actions .btn-label{ display:none; }
  .nav-actions .btn{ padding: 0.6em; }
  .project-card{ grid-template-columns: 1fr; }
  .project-index{ display:none; }
  .about-meta{ grid-template-columns: 1fr; }
  .section-head{ flex-direction: column; align-items: flex-start; }
  .section-note{ text-align:left; }
}