/* =========================================================
   TOKENS (palette d'origine conservée)
   ========================================================= */
:root {
  --bg:        #f0f5fb;
  --bg2:       #e6eef8;
  --surface:   #ffffff;
  --card:      #ffffff;
  --border:    #ccdaee;
  --border2:   #b8cce6;
  --blue:      #4a90d9;
  --blue-dark: #2d6fad;   /* bleu du texte et des boutons (contraste AA) */
  --blue-deep: #245a8d;   /* survol des boutons */
  --blue-light:#7db8e8;
  --blue-glow: rgba(74,144,217,.12);
  --ink:       #111827;
  --ink2:      #374151;
  --muted:     #55677f;   /* assombri pour un contraste AA sur fond clair */
  --ok:        #10b981;
  --radius:    14px;
  --shadow:    0 4px 24px rgba(74,144,217,.10);
  --shadow-lg: 0 12px 40px rgba(74,144,217,.18);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 84px; }

body {
  font-family: 'Outfit', sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.65;
  min-height: 100vh;
}
body::before {
  content: '';
  position: fixed; inset: 0;
  background-image: radial-gradient(circle, rgba(74,144,217,.15) 1px, transparent 1px);
  background-size: 28px 28px;
  pointer-events: none;
  z-index: 0;
}
a { color: inherit; }
img { max-width: 100%; display: block; }

.container { max-width: 1100px; margin: 0 auto; padding: 0 24px; position: relative; z-index: 1; }
.mono { font-family: 'JetBrains Mono', monospace; }
.muted { color: var(--muted); }

/* Accessibilité : texte réservé aux lecteurs d'écran, lien d'évitement, focus clavier */
.sr-only {
  position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
.skip-link {
  position: absolute; left: 16px; top: -60px; z-index: 300;
  background: var(--blue-dark); color: #fff; padding: 10px 16px; border-radius: 8px;
  font-weight: 700; text-decoration: none; transition: top .2s;
}
.skip-link:focus { top: 12px; }
main:focus { outline: none; }
a:focus-visible, button:focus-visible, .form-grid input:focus-visible,
.form-grid select:focus-visible, .form-grid textarea:focus-visible {
  outline: 3px solid var(--blue-dark); outline-offset: 2px;
}
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; opacity: 0; }

/* Bilingue : chaque texte existe en FR et en EN, on masque l'autre langue */
:root[data-lang="fr"] .en,
:root[data-lang="en"] .fr { display: none !important; }

/* =========================================================
   HEADER
   ========================================================= */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(240,245,251,.88);
  backdrop-filter: saturate(160%) blur(14px);
  border-bottom: 1px solid var(--border);
}
.nav-wrap { display: flex; align-items: center; justify-content: space-between; height: 66px; gap: 16px; }
.brand {
  display: flex; align-items: center; gap: 10px;
  text-decoration: none; color: var(--ink); flex-shrink: 0;
}
.brand .logo {
  width: 36px; height: 36px; border-radius: 10px;
  background: linear-gradient(135deg, var(--blue-dark), var(--blue-light));
  color: #fff; display: grid; place-items: center;
  font-family: 'JetBrains Mono', monospace; font-weight: 500; font-size: .85rem;
  box-shadow: 0 3px 12px rgba(74,144,217,.3);
}
.brand .who { line-height: 1.15; }
.brand .who b { display: block; font-size: 1rem; font-weight: 700; }
.brand .who small { font-size: .74rem; color: var(--muted); font-weight: 500; }

.nav { display: flex; align-items: center; gap: 2px; }
.nav a {
  color: var(--muted); text-decoration: none; font-weight: 500; font-size: .88rem;
  padding: 6px 13px; border-radius: 8px; transition: all .2s;
}
.nav a:hover, .nav a.active { color: var(--blue-dark); background: var(--blue-glow); }

.nav-actions { display: flex; align-items: center; gap: 8px; flex-shrink: 0; }
.lang-btn {
  height: 36px; padding: 0 12px; border-radius: 8px;
  border: 1px solid var(--border2); background: var(--surface); cursor: pointer;
  font-family: 'JetBrains Mono', monospace; font-size: .75rem; color: var(--muted);
  transition: all .2s;
}
.lang-btn b { color: var(--blue-dark); font-weight: 500; }
.lang-btn:hover { border-color: var(--blue); }
.burger {
  display: none; width: 38px; height: 36px; border-radius: 8px;
  border: 1px solid var(--border2); background: var(--surface); color: var(--ink2);
  cursor: pointer; font-size: 1rem;
}
.cv-btn {
  display: inline-flex; align-items: center; gap: 7px;
  background: var(--blue-dark); color: #fff;
  padding: 8px 16px; border-radius: 8px;
  text-decoration: none; font-weight: 700; font-size: .82rem;
  transition: all .25s; white-space: nowrap;
  box-shadow: 0 3px 12px rgba(74,144,217,.3);
}
.cv-btn:hover { background: var(--blue-deep); transform: translateY(-2px); box-shadow: 0 6px 20px rgba(74,144,217,.4); }

/* =========================================================
   HERO
   ========================================================= */
.hero { padding: 80px 0 40px; position: relative; overflow: hidden; }
.hero::after {
  content: '';
  position: absolute; top: -80px; right: -100px;
  width: 520px; height: 520px;
  background: radial-gradient(circle, rgba(74,144,217,.20) 0%, transparent 70%);
  pointer-events: none; z-index: 0;
}
.hero-container {
  display: grid; grid-template-columns: minmax(0,1.4fr) minmax(0,.8fr);
  align-items: center; gap: 56px; position: relative; z-index: 1;
}
.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(16,185,129,.08); border: 1px solid rgba(16,185,129,.3);
  color: #047857; padding: 5px 14px; border-radius: 999px;
  font-size: .8rem; font-weight: 600; margin-bottom: 22px;
}
.hero-eyebrow .dot {
  width: 8px; height: 8px; border-radius: 50%; background: var(--ok);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%,100% { box-shadow: 0 0 0 0 rgba(16,185,129,.45); }
  50%     { box-shadow: 0 0 0 6px rgba(16,185,129,0); }
}
.hero h1 {
  font-size: clamp(2.5rem, 5.4vw, 3.8rem);
  font-weight: 800; line-height: 1.05; letter-spacing: -.04em; color: var(--ink);
}
.hero h1 .highlight { color: var(--blue); }
.hero .role {
  font-family: 'JetBrains Mono', monospace; font-size: .95rem;
  color: var(--blue-dark); margin: 12px 0 18px;
}
.hero .mission {
  font-size: clamp(1.15rem, 2vw, 1.35rem); font-weight: 600; line-height: 1.4;
  color: var(--ink); max-width: 600px; margin-bottom: 14px;
}
.lead { color: var(--muted); font-size: 1rem; max-width: 580px; margin-bottom: 28px; }
.lead strong { color: var(--ink2); font-weight: 600; }
.hero-ctas { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 24px; }
.hero-links { display: flex; gap: 18px; flex-wrap: wrap; font-size: .88rem; color: var(--muted); }
.hero-links a { text-decoration: none; display: inline-flex; align-items: center; gap: 7px; transition: color .2s; }
.hero-links a:hover { color: var(--blue-dark); }

.hero-image { position: relative; justify-self: center; padding-bottom: 18px; }
.hero-image img {
  width: 300px; height: auto; aspect-ratio: 4 / 5; object-fit: cover; object-position: center 20%;
  border-radius: 22px; box-shadow: var(--shadow-lg);
  border: 3px solid rgba(74,144,217,.22);
  transition: transform .4s ease;
}
.hero-image img:hover { transform: translateY(-6px); }
.hero-badge {
  position: absolute; bottom: 0; left: 50%; transform: translateX(-50%);
  background: var(--blue-dark); color: #fff;
  font-size: .78rem; font-weight: 700; padding: 6px 15px;
  border-radius: 999px; white-space: nowrap;
  box-shadow: 0 4px 14px rgba(74,144,217,.4);
}

/* Chiffres clés */
.stats {
  display: grid; grid-template-columns: repeat(4, 1fr);
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); box-shadow: var(--shadow); margin-top: 48px;
}
.stat { padding: 20px 24px; border-right: 1px solid var(--border); }
.stat:last-child { border-right: 0; }
.stat b { display: block; font-size: 1.9rem; font-weight: 800; color: var(--blue); letter-spacing: -.03em; line-height: 1.15; }
.stat span { font-size: .84rem; color: var(--muted); }

/* =========================================================
   BOUTONS
   ========================================================= */
.cta {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--blue-dark); color: #fff; padding: 12px 24px;
  border-radius: 10px; text-decoration: none; font-weight: 700;
  font-size: .9rem; transition: all .25s;
  box-shadow: 0 4px 16px rgba(74,144,217,.3);
  border: none; cursor: pointer; font-family: 'Outfit', sans-serif;
}
.cta:hover { background: var(--blue-deep); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(74,144,217,.4); }
.cta-outline {
  display: inline-flex; align-items: center; gap: 8px;
  background: transparent; color: var(--blue-dark); padding: 10px 22px;
  border-radius: 10px; text-decoration: none; font-weight: 700;
  font-size: .9rem; border: 2px solid rgba(74,144,217,.5); transition: all .25s;
  cursor: pointer; font-family: 'Outfit', sans-serif;
}
.cta-outline:hover { background: var(--blue-glow); border-color: var(--blue); transform: translateY(-2px); }

/* =========================================================
   SECTIONS
   ========================================================= */
.section { padding-top: 88px; }
.kicker {
  font-family: 'JetBrains Mono', monospace; font-size: .78rem;
  color: var(--blue-dark); letter-spacing: .06em; margin-bottom: 6px;
}
h2.section-title {
  font-size: clamp(1.6rem, 3vw, 2.1rem); font-weight: 800;
  letter-spacing: -.03em; color: var(--ink);
  margin-bottom: 6px;
  display: flex; align-items: center; gap: 10px;
}
h2.section-title::before {
  content: ''; display: inline-block;
  width: 4px; height: 1em; background: var(--blue); border-radius: 3px; flex-shrink: 0;
}
.section-sub { color: var(--muted); font-size: .95rem; margin-bottom: 28px; max-width: 640px; }

/* =========================================================
   CARTES, PILLS, BADGES
   ========================================================= */
.grid { display: grid; gap: 18px; }
.grid.cols-2 { grid-template-columns: repeat(2, minmax(0,1fr)); }
.grid.cols-4 { grid-template-columns: repeat(4, minmax(0,1fr)); }

.card {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 22px;
  transition: transform .25s, box-shadow .25s, border-color .25s;
  position: relative; overflow: hidden;
}
.card::before {
  content: ''; position: absolute; top: 0; left: 0;
  width: 100%; height: 3px;
  background: linear-gradient(90deg, var(--blue), var(--blue-light));
  opacity: 0; transition: opacity .25s; z-index: 2;
}
.card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); border-color: rgba(74,144,217,.3); }
.card:hover::before { opacity: 1; }
.card h3 { font-size: 1.02rem; font-weight: 700; color: var(--ink); margin-bottom: 8px; }

.service-icon {
  width: 44px; height: 44px; border-radius: 11px;
  background: var(--blue-glow); border: 1px solid rgba(74,144,217,.22);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem; color: var(--blue-dark); margin-bottom: 14px;
}

.pill {
  display: inline-block; padding: 4px 12px;
  border: 1px solid var(--border2); border-radius: 999px;
  font-size: .8rem; color: var(--muted); background: var(--surface);
  font-weight: 500; font-family: 'Outfit', sans-serif;
}
button.pill { cursor: pointer; font-size: .84rem; padding: 7px 16px; transition: all .2s; }
button.pill:hover, button.pill.active { background: var(--blue-glow); border-color: rgba(74,144,217,.4); color: var(--blue-dark); }
.stack { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 12px; }

.badge {
  display: inline-flex; align-items: center; gap: 6px;
  font-weight: 700; font-size: .78rem; color: var(--blue-dark);
  background: var(--blue-glow); border: 1px solid rgba(74,144,217,.28);
  padding: 5px 12px; border-radius: 7px; text-decoration: none;
  transition: all .2s;
}
a.badge:hover { background: var(--blue-deep); color: #fff; }
.badge.solid { background: var(--blue-dark); color: #fff; border-color: var(--blue-dark); }
a.badge.solid:hover { background: var(--blue-deep); }
.badge.off { color: var(--muted); background: var(--bg2); border-color: var(--border); }
.links-row { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 16px; }

/* =========================================================
   EXPERIENCE (timeline)
   ========================================================= */
.timeline { border-left: 2px solid var(--border2); margin-left: 6px; padding-left: 28px; display: grid; gap: 18px; }
.timeline-item { position: relative; }
.timeline-item::before {
  content: ''; position: absolute; left: -36px; top: 26px;
  width: 14px; height: 14px; border-radius: 50%;
  background: var(--blue); border: 3px solid var(--bg);
  box-shadow: 0 0 0 2px rgba(74,144,217,.35);
}
.xp-head { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; align-items: flex-start; }
.xp-head h3 { margin-bottom: 2px; }
.xp-head .org { color: var(--blue-dark); font-weight: 600; font-size: .92rem; }
.date {
  font-family: 'JetBrains Mono', monospace;
  font-size: .78rem; font-weight: 500; color: var(--blue-dark);
  background: var(--blue-glow); border: 1px solid rgba(74,144,217,.2);
  padding: 3px 11px; border-radius: 999px; white-space: nowrap;
}
.timeline-item p { color: var(--ink2); font-size: .92rem; margin-top: 10px; }
.timeline-item p a { color: var(--blue-dark); font-weight: 600; text-decoration: none; border-bottom: 1px solid rgba(74,144,217,.4); transition: color .2s, border-color .2s; }
.timeline-item p a:hover { color: var(--blue-dark); border-color: var(--blue); }

/* =========================================================
   PROJETS (format étude de cas)
   ========================================================= */
#filters { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 24px; }
.project { padding: 0; display: flex; flex-direction: column; }
.project.featured { grid-column: 1 / -1; flex-direction: row; }
.project.featured .cover { flex: 0 0 40%; height: auto; min-height: 240px; }
.project.hidden { display: none; }
.cover {
  height: 140px; position: relative; overflow: hidden;
  display: flex; align-items: flex-end; padding: 16px;
  background: linear-gradient(135deg, var(--blue-dark), var(--blue) 55%, var(--blue-light));
}
.cover.alt  { background: linear-gradient(135deg, #1f4f86, #3b7cc4 60%, #8cc2ec); }
.cover.alt2 { background: linear-gradient(135deg, #2a5d93, #5a9de0 60%, #a9d2f2); }
.cover::after {
  content: ''; position: absolute; inset: 0;
  background-image: radial-gradient(rgba(255,255,255,.22) 1px, transparent 1px);
  background-size: 16px 16px;
}
.cover > i { position: absolute; right: 18px; top: 14px; font-size: 2.4rem; color: rgba(255,255,255,.35); }
.cover .metric {
  position: relative; z-index: 1; color: #fff;
  background: rgba(255,255,255,.16); border: 1px solid rgba(255,255,255,.3);
  backdrop-filter: blur(6px); padding: 6px 12px; border-radius: 10px; font-size: .78rem;
}
.cover .metric b { display: block; font-size: 1.05rem; line-height: 1.25; }
.project-body { padding: 20px 22px 22px; display: flex; flex-direction: column; flex: 1; }
.project-type { font-family: 'JetBrains Mono', monospace; font-size: .78rem; color: var(--blue-dark); margin-bottom: 4px; }
.case { display: grid; grid-template-columns: auto minmax(0,1fr); gap: 6px 14px; margin-top: 10px; font-size: .88rem; }
.case dt {
  font-family: 'JetBrains Mono', monospace; font-size: .72rem; font-weight: 500;
  text-transform: uppercase; letter-spacing: .05em; color: var(--muted); padding-top: 3px;
}
.case dd { color: var(--ink2); }
.case dd b { color: var(--blue-dark); font-weight: 700; }
.project .links-row { margin-top: auto; padding-top: 16px; }
.more-link {
  display: inline-flex; align-items: center; gap: 8px; margin-top: 22px;
  color: var(--blue-dark); font-weight: 700; text-decoration: none; font-size: .92rem;
}
.more-link i { transition: transform .2s; }
.more-link:hover i { transform: translateX(4px); }

/* =========================================================
   FORMATION & CERTIFICATIONS
   ========================================================= */
.edu-item { padding: 14px 0; border-bottom: 1px solid var(--border); }
.edu-item:last-child { border-bottom: 0; padding-bottom: 0; }
.edu-item:first-of-type { padding-top: 4px; }
.edu-item h4 { font-size: .95rem; font-weight: 700; margin: 6px 0 2px; }
.edu-item p { font-size: .86rem; color: var(--muted); }
.cert-list { display: grid; gap: 0; }
.cert-list a {
  display: flex; justify-content: space-between; align-items: center; gap: 12px;
  padding: 10px 0; border-bottom: 1px solid var(--border);
  text-decoration: none; font-size: .88rem; color: var(--ink2); transition: color .2s;
}
.cert-list a:last-child { border-bottom: 0; }
.cert-list a:hover { color: var(--blue-dark); }
.cert-list small { font-family: 'JetBrains Mono', monospace; font-size: .76rem; color: var(--muted); white-space: nowrap; }

/* =========================================================
   CONTACT
   ========================================================= */
.contact-wrap { display: grid; grid-template-columns: minmax(0,1fr) minmax(0,1.15fr); gap: 22px; align-items: start; }
.contact-links { display: grid; gap: 12px; margin-top: 18px; }
.contact-links a { display: flex; align-items: center; gap: 12px; text-decoration: none; font-size: .92rem; color: var(--ink2); overflow-wrap: anywhere; }
.contact-links a:hover { color: var(--blue-dark); }
.contact-links i {
  width: 38px; height: 38px; border-radius: 10px; flex-shrink: 0;
  background: var(--blue-glow); color: var(--blue-dark);
  display: grid; place-items: center;
}
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.form-grid input, .form-grid textarea, .form-grid select {
  background: var(--bg); border: 1px solid var(--border);
  color: var(--ink); padding: 11px 14px; border-radius: 9px;
  font-family: 'Outfit', sans-serif; font-size: .9rem;
  outline: none; transition: border-color .2s, box-shadow .2s; width: 100%;
}
.form-grid input:focus, .form-grid textarea:focus, .form-grid select:focus {
  border-color: var(--blue); box-shadow: 0 0 0 3px rgba(74,144,217,.12);
}
.form-grid .full { grid-column: 1 / -1; }
.form-grid textarea { resize: vertical; }
.form-grid input::placeholder, .form-grid textarea::placeholder { color: #6b7f9a; }
.form-status { font-size: .86rem; color: var(--ok); font-weight: 600; }
.form-status.error { color: #dc2626; }

/* =========================================================
   FOOTER
   ========================================================= */
.site-footer {
  border-top: 1px solid var(--border); margin-top: 96px;
  padding: 28px 0; background: var(--surface); position: relative; z-index: 1;
}
.site-footer .container { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.site-footer p { color: var(--muted); font-size: .84rem; }
.socials { display: flex; gap: 10px; }
.socials a {
  display: flex; align-items: center; justify-content: center;
  width: 36px; height: 36px; border-radius: 9px;
  background: var(--bg2); border: 1px solid var(--border);
  color: var(--muted); font-size: .92rem; text-decoration: none; transition: all .2s;
}
.socials a:hover { background: var(--blue-deep); color: #fff; border-color: var(--blue-deep); transform: translateY(-2px); box-shadow: 0 4px 12px rgba(74,144,217,.3); }

/* =========================================================
   ANIMATIONS D'APPARITION
   ========================================================= */
.js .reveal { opacity: 0; transform: translateY(22px); transition: opacity .6s ease, transform .6s ease; }
.js .reveal.show { opacity: 1; transform: none; }
.js .reveal-stagger > * { opacity: 0; transform: translateY(18px); transition: opacity .5s ease, transform .5s ease; }
.js .reveal-stagger.show > * { opacity: 1; transform: none; }
.reveal-stagger.show > *:nth-child(2) { transition-delay: .08s; }
.reveal-stagger.show > *:nth-child(3) { transition-delay: .16s; }
.reveal-stagger.show > *:nth-child(n+4) { transition-delay: .24s; }
@media (prefers-reduced-motion: reduce) {
  .js .reveal, .js .reveal-stagger > * { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* =========================================================
   OUTILS ANIMES : bandeau de logos + tags qui apparaissent
   ========================================================= */
.tools-band { margin: 0 -24px 26px; display: grid; gap: 12px; }
.marquee {
  overflow: hidden; padding: 8px 0;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
          mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
}
.marquee-track {
  display: flex; gap: 14px; padding-right: 14px; width: max-content;
  animation: marquee 45s linear infinite;
}
.marquee.reverse .marquee-track { animation-direction: reverse; animation-duration: 52s; }
.marquee:hover .marquee-track { animation-play-state: paused; }
@keyframes marquee { to { transform: translateX(-50%); } }

.tool {
  display: flex; align-items: center; gap: 10px; flex-shrink: 0;
  background: var(--card); border: 1px solid var(--border); border-radius: 12px;
  padding: 10px 18px; font-weight: 600; font-size: .9rem; color: var(--ink2);
  box-shadow: 0 2px 10px rgba(74,144,217,.08);
  transition: transform .35s cubic-bezier(.34,1.56,.64,1), border-color .2s, box-shadow .2s, color .2s;
}
.tool img { width: 28px; height: 28px; transition: transform .5s cubic-bezier(.34,1.56,.64,1); }
.tool:hover { transform: translateY(-5px) scale(1.06); border-color: var(--blue); color: var(--blue-dark); box-shadow: var(--shadow-lg); }
.tool:hover img { transform: rotate(-12deg) scale(1.15); }

/* Tags des cartes de compétences : apparition en cascade + rebond au survol */
.skill-cards.show .pill {
  animation: pop .55s cubic-bezier(.34,1.56,.64,1) both;
  animation-delay: calc(var(--i, 0) * 55ms + .25s);
}
@keyframes pop { from { opacity: 0; transform: translateY(10px) scale(.6); } }
.skill-cards .pill { transition: transform .3s cubic-bezier(.34,1.56,.64,1), background .2s, color .2s, border-color .2s; cursor: default; }
.skill-cards .pill:hover { transform: translateY(-3px); background: var(--blue-glow); border-color: rgba(74,144,217,.4); color: var(--blue-dark); }
.skill-cards .card:hover .service-icon { animation: wiggle .6s ease; }
@keyframes wiggle { 25% { transform: rotate(-10deg) scale(1.08); } 60% { transform: rotate(8deg) scale(1.08); } }

@media (max-width: 640px) {
  .tools-band { margin: 0 -16px 22px; }
  .tool { padding: 8px 14px; font-size: .84rem; }
  .tool img { width: 24px; height: 24px; }
}
@media (prefers-reduced-motion: reduce) {
  .marquee-track { animation: none; flex-wrap: wrap; width: auto; justify-content: center; }
  .marquee-track [aria-hidden="true"] { display: none; }
  .skill-cards.show .pill { animation: none; }
}

/* =========================================================
   BOUTON RETOUR EN HAUT
   ========================================================= */
.to-top {
  position: fixed; right: 24px; bottom: 24px; z-index: 90;
  width: 48px; height: 48px; border-radius: 14px; border: none; cursor: pointer;
  background: var(--blue-dark); color: #fff; display: grid; place-items: center;
  box-shadow: 0 8px 24px rgba(74,144,217,.4);
  opacity: 0; visibility: hidden; transform: translateY(16px) scale(.9);
  transition: opacity .3s, visibility .3s, transform .35s cubic-bezier(.34,1.56,.64,1), background .2s;
}
.to-top.visible { opacity: 1; visibility: visible; transform: none; }
.to-top:hover { background: var(--blue-deep); transform: translateY(-4px); }
.to-top:hover svg { animation: nudge .6s ease infinite; }
.to-top:focus-visible { outline: 3px solid var(--blue-light); outline-offset: 3px; }
@keyframes nudge { 50% { transform: translateY(-3px); } }
@media (max-width: 640px) { .to-top { right: 16px; bottom: 16px; width: 44px; height: 44px; } }

/* =========================================================
   RESPONSIVE
   ========================================================= */
@media (max-width: 960px) {
  .hero-container { grid-template-columns: 1fr; gap: 36px; }
  .hero-image { order: -1; }
  .hero-image img { width: 230px; }
  .grid.cols-4 { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .project.featured { flex-direction: column; }
  .project.featured .cover { min-height: 140px; }
  .contact-wrap { grid-template-columns: 1fr; }
}
@media (max-width: 760px) {
  .nav {
    display: none; position: absolute; top: 66px; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 2px;
    background: var(--surface); border-bottom: 1px solid var(--border);
    padding: 10px 16px 14px; box-shadow: var(--shadow);
  }
  .nav.open { display: flex; }
  .nav a { padding: 10px 12px; font-size: .95rem; }
  .burger { display: grid; place-items: center; }
  .cv-btn { display: none; }
  .brand .who small { display: none; }
}
@media (max-width: 640px) {
  .container { padding: 0 16px; }
  .hero { padding-top: 48px; }
  .stats { grid-template-columns: 1fr 1fr; }
  .stat:nth-child(2) { border-right: 0; }
  .stat:nth-child(-n+2) { border-bottom: 1px solid var(--border); }
  .grid.cols-2, .grid.cols-4 { grid-template-columns: 1fr; }
  .timeline { padding-left: 20px; }
  .timeline-item::before { left: -28px; }
  .form-grid { grid-template-columns: 1fr; }
  .section { padding-top: 64px; }
}