/* ============================================================
       CSS VARIABLES & RESET
    ============================================================ */
    :root {
      --bg:        #0A121F;
      --bg2:       #0f1c2e;
      --bg3:       #111d30;
      --accent:    #BBFF34;
      --accent2:   #8fcc10;
      --text:      #e8edf5;
      --muted:     #6b7a90;
      --border:    rgba(187,255,52,.12);
      --card:      rgba(15,28,46,.7);
      --radius:    14px;
      --font-head: 'Syne', sans-serif;
      --font-mono: 'DM Mono', monospace;
      --font-body: 'DM Sans', sans-serif;
      --transition: .3s cubic-bezier(.4,0,.2,1);
    }

    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; font-size: 16px; }
    body {
      background: var(--bg);
      color: var(--text);
      font-family: var(--font-body);
      line-height: 1.7;
      overflow-x: hidden;
    }
    img { max-width: 100%; display: block; }
    a { color: inherit; text-decoration: none; }
    ul { list-style: none; }
    button { cursor: pointer; font-family: inherit; border: none; }

    /* ============================================================
       LOADER
    ============================================================ */
    #loader {
      position: fixed; inset: 0;
      background: var(--bg);
      display: flex; align-items: center; justify-content: center;
      z-index: 9999;
      transition: opacity .5s ease, visibility .5s ease;
    }
    #loader.hidden { opacity: 0; visibility: hidden; }
    .loader-inner {
      display: flex; flex-direction: column; align-items: center; gap: 16px;
    }
    .loader-logo {
      font-family: var(--font-head);
      font-size: 2.2rem;
      font-weight: 800;
      color: var(--accent);
      letter-spacing: -1px;
    }
    .loader-bar {
      width: 160px; height: 3px;
      background: var(--border);
      border-radius: 99px;
      overflow: hidden;
    }
    .loader-fill {
      height: 100%;
      background: var(--accent);
      border-radius: 99px;
      animation: loadFill 1.6s ease forwards;
    }
    @keyframes loadFill { from { width: 0 } to { width: 100% } }

    /* ============================================================
       SCROLLBAR
    ============================================================ */
    ::-webkit-scrollbar { width: 6px; }
    ::-webkit-scrollbar-track { background: var(--bg); }
    ::-webkit-scrollbar-thumb { background: var(--accent); border-radius: 99px; }

    /* ============================================================
       LAYOUT HELPERS
    ============================================================ */
    .container { max-width: 1160px; margin: 0 auto; padding: 0 24px; }
    .section { padding: 100px 0; }
    .section-label {
      font-family: var(--font-mono);
      font-size: .75rem;
      color: var(--accent);
      letter-spacing: .2em;
      text-transform: uppercase;
      margin-bottom: 12px;
    }
    .section-title {
      font-family: var(--font-head);
      font-size: clamp(2rem, 4vw, 3rem);
      font-weight: 800;
      line-height: 1.1;
      margin-bottom: 48px;
    }
    .section-title span { color: var(--accent); }

    /* reveal on scroll */
    .reveal { opacity: 0; transform: translateY(40px); transition: opacity .7s ease, transform .7s ease; }
    .reveal.visible { opacity: 1; transform: none; }

    /* ============================================================
       NAVBAR
    ============================================================ */
    #navbar {
      position: fixed; top: 0; left: 0; right: 0;
      z-index: 1000;
      transition: background var(--transition), backdrop-filter var(--transition), box-shadow var(--transition);
    }
    #navbar.scrolled {
      background: rgba(10,18,31,.85);
      backdrop-filter: blur(18px);
      box-shadow: 0 1px 0 var(--border);
    }
    .nav-inner {
      max-width: 1160px; margin: 0 auto; padding: 0 24px;
      height: 68px;
      display: flex; align-items: center; justify-content: space-between;
    }
    .nav-logo {
      font-family: var(--font-head);
      font-size: 1.3rem;
      font-weight: 800;
      color: var(--text);
      display: flex; align-items: center; gap: 8px;
    }
    .nav-logo .dot { color: var(--accent); }
    .nav-links {
      display: flex; align-items: center; gap: 36px;
    }
    .nav-links a {
      font-family: var(--font-mono);
      font-size: .8rem;
      color: var(--muted);
      letter-spacing: .05em;
      position: relative;
      transition: color var(--transition);
    }
    .nav-links a::after {
      content: '';
      position: absolute; bottom: -4px; left: 0;
      width: 0; height: 2px;
      background: var(--accent);
      transition: width var(--transition);
    }
    .nav-links a:hover, .nav-links a.active { color: var(--text); }
    .nav-links a:hover::after, .nav-links a.active::after { width: 100%; }

    .nav-actions { display: flex; align-items: center; gap: 12px; }

    .btn-outline {
      padding: 8px 20px;
      border: 1px solid var(--accent);
      color: var(--accent);
      background: transparent;
      border-radius: 6px;
      font-family: var(--font-mono);
      font-size: .78rem;
      letter-spacing: .05em;
      transition: background var(--transition), color var(--transition);
    }
    .btn-outline:hover { background: var(--accent); color: var(--bg); }

    /* burger */
    .burger {
      display: none;
      flex-direction: column;
      gap: 5px;
      background: transparent;
      padding: 4px;
    }
    .burger span {
      width: 24px; height: 2px;
      background: var(--text);
      border-radius: 99px;
      transition: var(--transition);
      display: block;
    }
    .burger.open span:nth-child(1) { transform: rotate(45deg) translate(5px,5px); }
    .burger.open span:nth-child(2) { opacity: 0; }
    .burger.open span:nth-child(3) { transform: rotate(-45deg) translate(5px,-5px); }

    /* mobile menu */
    .mobile-menu {
      display: none;
      flex-direction: column;
      gap: 0;
      background: rgba(10,18,31,.97);
      border-top: 1px solid var(--border);
      padding: 16px 24px 24px;
    }
    .mobile-menu.open { display: flex; }
    .mobile-menu a {
      font-family: var(--font-mono);
      font-size: .9rem;
      color: var(--muted);
      padding: 12px 0;
      border-bottom: 1px solid var(--border);
      transition: color var(--transition);
    }
    .mobile-menu a:hover { color: var(--accent); }

    /* ============================================================
       HERO
    ============================================================ */
    #hero {
      min-height: 100svh;
      display: flex; align-items: center;
      padding: 100px 0 60px;
      position: relative;
      overflow: hidden;
    }
    /* animated grid bg */
    #hero::before {
      content: '';
      position: absolute; inset: 0;
      background-image:
        linear-gradient(rgba(187,255,52,.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(187,255,52,.04) 1px, transparent 1px);
      background-size: 50px 50px;
      mask-image: radial-gradient(ellipse 80% 70% at 50% 50%, black 30%, transparent 100%);
    }
    /* glow blob */
    #hero::after {
      content: '';
      position: absolute;
      width: 600px; height: 600px;
      background: radial-gradient(circle, rgba(187,255,52,.08) 0%, transparent 70%);
      top: -100px; right: -100px;
      pointer-events: none;
    }

    .hero-inner {
      display: grid;
      grid-template-columns: 1fr auto;
      gap: 60px;
      align-items: center;
      position: relative; z-index: 1;
    }
    .hero-badge {
      display: inline-flex; align-items: center; gap: 8px;
      background: rgba(187,255,52,.08);
      border: 1px solid var(--border);
      border-radius: 99px;
      padding: 6px 16px;
      font-family: var(--font-mono);
      font-size: .72rem;
      color: var(--accent);
      letter-spacing: .1em;
      margin-bottom: 24px;
    }
    .hero-badge .blink {
      width: 7px; height: 7px;
      background: var(--accent);
      border-radius: 50%;
      animation: blink 1.4s infinite;
    }
    @keyframes blink { 0%,100%{opacity:1} 50%{opacity:.2} }

    .hero-name {
      font-family: var(--font-head);
      font-size: clamp(3rem, 7vw, 5.5rem);
      font-weight: 800;
      line-height: 1;
      letter-spacing: -2px;
      margin-bottom: 8px;
    }
    .hero-name .accent { color: var(--accent); }
    .hero-role {
      font-family: var(--font-mono);
      font-size: clamp(.9rem, 2vw, 1.1rem);
      color: var(--muted);
      margin-bottom: 24px;
      letter-spacing: .05em;
    }
    .hero-desc {
      font-size: 1.05rem;
      color: #9aaabf;
      max-width: 520px;
      line-height: 1.8;
      margin-bottom: 40px;
      text-align: justify;
    }
    .hero-ctas { display: flex; gap: 16px; flex-wrap: wrap; }

    .btn-primary {
      display: inline-flex; align-items: center; gap: 8px;
      background: var(--accent);
      color: var(--bg);
      padding: 13px 28px;
      border-radius: 8px;
      font-family: var(--font-head);
      font-weight: 700;
      font-size: .9rem;
      letter-spacing: .02em;
      transition: transform var(--transition), box-shadow var(--transition);
      position: relative;
      overflow: hidden;
    }
    .btn-primary::before {
      content: '';
      position: absolute; inset: 0;
      background: rgba(255,255,255,.15);
      transform: translateX(-100%);
      transition: transform .3s ease;
    }
    .btn-primary:hover::before { transform: translateX(0); }
    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 12px 32px rgba(187,255,52,.25);
    }

    .btn-ghost {
      display: inline-flex; align-items: center; gap: 8px;
      background: transparent;
      color: var(--text);
      padding: 13px 28px;
      border-radius: 8px;
      font-family: var(--font-head);
      font-weight: 700;
      font-size: .9rem;
      border: 1px solid rgba(255,255,255,.12);
      transition: border-color var(--transition), color var(--transition), transform var(--transition);
    }
    .btn-ghost:hover {
      border-color: var(--accent);
      color: var(--accent);
      transform: translateY(-2px);
    }

    /* hero stats */
    .hero-stats {
      display: flex; gap: 32px;
      margin-top: 48px;
      padding-top: 40px;
      border-top: 1px solid var(--border);
    }
    .stat-num {
      font-family: var(--font-head);
      font-size: 2rem;
      font-weight: 800;
      color: var(--accent);
      line-height: 1;
    }
    .stat-label {
      font-size: .78rem;
      color: var(--muted);
      font-family: var(--font-mono);
      margin-top: 4px;
    }

    /* avatar */
    .hero-avatar {
      width: 280px; height: 280px;
      border-radius: 50%;
      background: var(--bg2);
      border: 2px solid var(--border);
      display: flex; align-items: center; justify-content: center;
      position: relative;
      flex-shrink: 0;
    }
    .hero-avatar::before {
      content: '';
      position: absolute; inset: -8px;
      border-radius: 50%;
      border: 1px solid rgba(187,255,52,.2);
      animation: spin 12s linear infinite;
    }
    .hero-avatar::after {
      content: '';
      position: absolute; inset: -16px;
      border-radius: 50%;
      border: 1px dashed rgba(187,255,52,.1);
      animation: spin 20s linear infinite reverse;
    }
    @keyframes spin { to { transform: rotate(360deg); } }
    .avatar-inner {
      width: 100%; height: 100%;
      border-radius: 50%;
      overflow: hidden;
      display: flex; align-items: center; justify-content: center;
      font-family: var(--font-head);
      font-size: 5rem;
      font-weight: 800;
      color: var(--accent);
      background: linear-gradient(135deg, var(--bg2) 0%, #0c1b2e 100%);
      user-select: none;
    }

    /* ============================================================
       ABOUT
    ============================================================ */
    #about { background: var(--bg2); }
    .about-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 60px;
      align-items: start;
      text-align: justify;
    }
    .about-text p { color: #9aaabf; margin-bottom: 16px; font-size: 1rem; }
    .about-tag-row { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 28px; }
    .tag {
      background: rgba(187,255,52,.08);
      border: 1px solid var(--border);
      color: var(--accent);
      font-family: var(--font-mono);
      font-size: .73rem;
      padding: 6px 14px;
      border-radius: 99px;
      letter-spacing: .05em;
      transition: background var(--transition);
    }
    .tag:hover { background: rgba(187,255,52,.16); }

    .soft-skills { display: flex; flex-direction: column; gap: 14px; }
    .soft-skill-item {
      background: var(--card);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 18px 20px;
      display: flex; align-items: center; gap: 16px;
      backdrop-filter: blur(8px);
      transition: border-color var(--transition), transform var(--transition);
    }
    .soft-skill-item:hover {
      border-color: rgba(187,255,52,.3);
      transform: translateX(4px);
    }
    .soft-icon {
      width: 40px; height: 40px;
      background: rgba(187,255,52,.1);
      border-radius: 10px;
      display: flex; align-items: center; justify-content: center;
      color: var(--accent);
      flex-shrink: 0;
    }
    .soft-skill-item h4 { font-family: var(--font-head); font-weight: 700; font-size: .95rem; }
    .soft-skill-item p { font-size: .82rem; color: var(--muted); }

    /* ============================================================
       SKILLS
    ============================================================ */
    #skills { background: var(--bg); }
    .skills-categories { display: grid; grid-template-columns: repeat(3,1fr); gap: 28px; }
    .skill-card {
      background: var(--card);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 28px;
      backdrop-filter: blur(8px);
      transition: border-color var(--transition), transform var(--transition);
    }
    .skill-card:hover { border-color: rgba(187,255,52,.25); transform: translateY(-4px); }
    .skill-card-header {
      display: flex; align-items: center; gap: 12px;
      margin-bottom: 24px;
    }
    .skill-card-icon {
      width: 38px; height: 38px;
      background: rgba(187,255,52,.1);
      border-radius: 10px;
      display: flex; align-items: center; justify-content: center;
      color: var(--accent);
    }
    .skill-card h3 { font-family: var(--font-head); font-weight: 700; font-size: 1rem; }
    .skill-badges { display: flex; flex-wrap: wrap; gap: 8px; }
    .skill-badge {
      background: rgba(255,255,255,.04);
      border: 1px solid rgba(255,255,255,.08);
      color: var(--text);
      font-family: var(--font-mono);
      font-size: .72rem;
      padding: 5px 12px;
      border-radius: 6px;
      letter-spacing: .03em;
      transition: background var(--transition), border-color var(--transition), color var(--transition);
    }
    .skill-badge:hover {
      background: rgba(187,255,52,.1);
      border-color: var(--accent);
      color: var(--accent);
    }

    /* bar variant */
    .skill-bar-list { display: flex; flex-direction: column; gap: 14px; }
    /*.skill-bar-item {}*/
    .skill-bar-top {
      display: flex; justify-content: space-between;
      font-size: .8rem; margin-bottom: 6px;
      font-family: var(--font-mono);
    }
    .skill-bar-track {
      width: 100%; height: 4px;
      background: rgba(255,255,255,.06);
      border-radius: 99px;
      overflow: hidden;
    }
    .skill-bar-fill {
      height: 100%;
      background: linear-gradient(90deg, var(--accent), #7fd600);
      border-radius: 99px;
      width: 0;
      transition: width 1.2s cubic-bezier(.4,0,.2,1);
    }

    /* ============================================================
       PROJECTS
    ============================================================ */
    #projects { background: var(--bg2); }
    .project-filters { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 40px; }
    .filter-btn {
      background: transparent;
      border: 1px solid var(--border);
      color: var(--muted);
      font-family: var(--font-mono);
      font-size: .75rem;
      padding: 7px 18px;
      border-radius: 99px;
      letter-spacing: .05em;
      transition: var(--transition);
    }
    .filter-btn.active, .filter-btn:hover {
      background: var(--accent);
      border-color: var(--accent);
      color: var(--bg);
    }
    .projects-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 24px; }
    .project-card {
      background: var(--card);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      overflow: hidden;
      transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
      display: flex; flex-direction: column;
    }
    .project-card:hover {
      border-color: rgba(187,255,52,.3);
      transform: translateY(-6px);
      box-shadow: 0 24px 48px rgba(0,0,0,.4);
    }
    .project-img {
      width: 100%; aspect-ratio: 16/9;
      background: var(--bg3);
      display: flex; align-items: center; justify-content: center;
      font-size: 2.5rem;
      position: relative;
      overflow: hidden;
    }
    .project-img::after {
      content: '';
      position: absolute; inset: 0;
      background: linear-gradient(to bottom, transparent 50%, rgba(10,18,31,.8));
    }
    .project-body { padding: 20px; flex: 1; display: flex; flex-direction: column; }
    .project-techs { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 10px; }
    .tech-pill {
      background: rgba(187,255,52,.08);
      color: var(--accent);
      font-family: var(--font-mono);
      font-size: .65rem;
      padding: 3px 10px;
      border-radius: 99px;
      letter-spacing: .05em;
      border: 1px solid var(--border);
    }
    .project-body h3 {
      font-family: var(--font-head);
      font-weight: 700;
      font-size: 1.05rem;
      margin-bottom: 8px;
    }
    .project-body p { font-size: .85rem; color: var(--muted); flex: 1; line-height: 1.6; }
    .project-links {
      display: flex; gap: 10px;
      margin-top: 16px;
      padding-top: 16px;
      border-top: 1px solid var(--border);
    }
    .project-link {
      display: inline-flex; align-items: center; gap: 6px;
      font-family: var(--font-mono);
      font-size: .72rem;
      color: var(--muted);
      padding: 5px 12px;
      border: 1px solid var(--border);
      border-radius: 6px;
      transition: var(--transition);
    }
    .project-link:hover { color: var(--accent); border-color: var(--accent); }

    .project-card[data-hidden="true"] { display: none; }

    /* ============================================================
       CERTIFICATIONS
    ============================================================ */
    #certifications { background: var(--bg); }
    .certs-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 20px; }
    .cert-card {
      background: var(--card);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 24px;
      transition: var(--transition);
      position: relative;
      overflow: hidden;
    }
    .cert-card::before {
      content: '';
      position: absolute; top: 0; left: 0;
      width: 3px; height: 100%;
      background: var(--accent);
    }
    .cert-card:hover { border-color: rgba(187,255,52,.3); transform: translateY(-4px); }
    .cert-org {
      font-family: var(--font-mono);
      font-size: .7rem;
      color: var(--accent);
      letter-spacing: .1em;
      text-transform: uppercase;
      margin-bottom: 8px;
    }
    .cert-card h3 { font-family: var(--font-head); font-weight: 700; font-size: .95rem; margin-bottom: 6px; }
    .cert-date { font-family: var(--font-mono); font-size: .75rem; color: var(--muted); }
    .cert-link {
      display: inline-flex; align-items: center; gap: 5px;
      margin-top: 14px;
      font-family: var(--font-mono);
      font-size: .72rem;
      color: var(--accent);
      transition: gap var(--transition);
    }
    .cert-link:hover { gap: 8px; }

    /* ============================================================
       PARCOURS — TIMELINE
    ============================================================ */
    #parcours { background: var(--bg2); }
    .parcours-tabs {
      display: flex; gap: 4px;
      background: rgba(255,255,255,.04);
      border-radius: 10px;
      padding: 4px;
      width: fit-content;
      margin-bottom: 48px;
    }
    .tab-btn {
      background: transparent;
      border: none;
      color: var(--muted);
      font-family: var(--font-mono);
      font-size: .8rem;
      padding: 8px 24px;
      border-radius: 7px;
      transition: var(--transition);
      letter-spacing: .05em;
    }
    .tab-btn.active { background: var(--accent); color: var(--bg); font-weight: 700; }

    .timeline { position: relative; padding-left: 36px; display: none; }
    .timeline.active { display: block; }
    .timeline::before {
      content: '';
      position: absolute; left: 11px; top: 0; bottom: 0;
      width: 1px;
      background: linear-gradient(to bottom, var(--accent), transparent);
    }
    .tl-item {
      position: relative;
      padding: 0 0 36px 24px;
    }
    .tl-dot {
      position: absolute; left: -25px; top: 4px;
      width: 14px; height: 14px;
      border-radius: 50%;
      background: var(--bg2);
      border: 2px solid var(--accent);
      transition: background var(--transition);
    }
    .tl-item:hover .tl-dot { background: var(--accent); }
    .tl-date {
      font-family: var(--font-mono);
      font-size: .72rem;
      color: var(--accent);
      letter-spacing: .1em;
      margin-bottom: 6px;
    }
    .tl-card {
      background: var(--card);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 20px 24px;
      transition: border-color var(--transition);
    }
    .tl-item:hover .tl-card { border-color: rgba(187,255,52,.3); }
    .tl-card h3 {
      font-family: var(--font-head);
      font-weight: 700;
      font-size: 1rem;
      margin-bottom: 4px;
    }
    .tl-where {
      font-family: var(--font-mono);
      font-size: .78rem;
      color: var(--muted);
      margin-bottom: 10px;
    }
    .tl-card p { font-size: .85rem; color: #7b8ea6; line-height: 1.6; }
    .tl-card ul { margin-top: 8px; display: flex; flex-direction: column; gap: 4px; }
    .tl-card ul li {
      font-size: .83rem; color: #7b8ea6;
      padding-left: 14px;
      position: relative;
    }
    .tl-card ul li::before {
      content: '›';
      position: absolute; left: 0;
      color: var(--accent);
    }

    /* ============================================================
       VEILLE IT
    ============================================================ */
    #veille { background: var(--bg); }
    .veille-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 24px; }
    .article-card {
      background: var(--card);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      overflow: hidden;
      transition: var(--transition);
      display: flex; flex-direction: column;
    }
    .article-card:hover { border-color: rgba(187,255,52,.25); transform: translateY(-4px); }
    .article-img {
      width: 100%; aspect-ratio: 16/9;
      display: flex; align-items: center; justify-content: center;
      font-size: 2.5rem;
    }
    .article-body { padding: 20px; flex: 1; display: flex; flex-direction: column; }
    .article-category {
      font-family: var(--font-mono);
      font-size: .68rem;
      color: var(--accent);
      letter-spacing: .12em;
      text-transform: uppercase;
      margin-bottom: 8px;
    }
    .article-card h3 {
      font-family: var(--font-head);
      font-weight: 700;
      font-size: .95rem;
      margin-bottom: 8px;
      line-height: 1.4;
    }
    .article-card p { font-size: .82rem; color: var(--muted); flex: 1; line-height: 1.6; }
    .article-footer {
      display: flex; justify-content: space-between; align-items: center;
      margin-top: 16px;
      padding-top: 14px;
      border-top: 1px solid var(--border);
    }
    .article-date { font-family: var(--font-mono); font-size: .7rem; color: var(--muted); }
    .article-link {
      font-family: var(--font-mono);
      font-size: .72rem;
      color: var(--accent);
      display: flex; align-items: center; gap: 4px;
      transition: gap var(--transition);
    }
    .article-link:hover { gap: 7px; }

    /* ============================================================
       INTERESTS
    ============================================================ */
    #interests { background: var(--bg2); }
    .interests-grid { display: grid; grid-template-columns: repeat(5,1fr); gap: 16px; }
    .interest-item {
      background: var(--card);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 24px 16px;
      text-align: center;
      transition: var(--transition);
      cursor: default;
    }
    .interest-item:hover {
      border-color: rgba(187,255,52,.3);
      transform: translateY(-6px);
      background: rgba(187,255,52,.05);
    }
    .interest-icon {
      font-size: 2rem;
      margin-bottom: 10px;
      display: block;
    }
    .interest-item h4 { font-family: var(--font-head); font-size: .85rem; font-weight: 700; }

    /* ============================================================
       CONTACT
    ============================================================ */
    #contact { background: var(--bg); }
    .contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: start; }
    .contact-info { display: flex; flex-direction: column; gap: 20px; }
    .contact-item {
      display: flex; align-items: center; gap: 16px;
      background: var(--card);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 16px 20px;
      transition: var(--transition);
    }
    .contact-item:hover { border-color: rgba(187,255,52,.3); }
    .contact-item-icon {
      width: 40px; height: 40px;
      background: rgba(187,255,52,.1);
      border-radius: 10px;
      display: flex; align-items: center; justify-content: center;
      color: var(--accent);
      flex-shrink: 0;
    }
    .contact-item-text h4 { font-family: var(--font-head); font-size: .9rem; font-weight: 700; }
    .contact-item-text a, .contact-item-text span {
      font-family: var(--font-mono);
      font-size: .8rem;
      color: var(--muted);
    }

    /* form */
    .contact-form { display: flex; flex-direction: column; gap: 16px; }
    .form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
    .form-group { display: flex; flex-direction: column; gap: 6px; }
    .form-group label {
      font-family: var(--font-mono);
      font-size: .75rem;
      color: var(--muted);
      letter-spacing: .05em;
    }
    .form-group input, .form-group textarea {
      background: rgba(255,255,255,.04);
      border: 1px solid var(--border);
      color: var(--text);
      border-radius: 8px;
      padding: 12px 16px;
      font-family: var(--font-body);
      font-size: .9rem;
      transition: border-color var(--transition), box-shadow var(--transition);
      outline: none;
      resize: vertical;
    }
    .form-group input:focus, .form-group textarea:focus {
      border-color: var(--accent);
      box-shadow: 0 0 0 3px rgba(187,255,52,.1);
    }
    .form-group textarea { min-height: 130px; }
    .form-success {
      display: none;
      text-align: center;
      padding: 20px;
      background: rgba(187,255,52,.08);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      font-family: var(--font-mono);
      font-size: .85rem;
      color: var(--accent);
    }

    /* ============================================================
       FOOTER
    ============================================================ */
    footer {
      background: var(--bg2);
      border-top: 1px solid var(--border);
      padding: 40px 0;
    }
    .footer-inner {
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 24px;
      text-align: center;
    }
    .footer-links { display: flex; gap: 32px; flex-wrap: wrap; justify-content: center; }
    .footer-links a {
      font-family: var(--font-mono);
      font-size: .75rem;
      color: var(--muted);
      letter-spacing: .05em;
      transition: color var(--transition);
    }
    .footer-links a:hover { color: var(--accent); }
    .footer-socials { display: flex; gap: 14px; }
    .social-btn {
      width: 38px; height: 38px;
      border-radius: 10px;
      background: rgba(255,255,255,.04);
      border: 1px solid var(--border);
      display: flex; align-items: center; justify-content: center;
      color: var(--muted);
      transition: var(--transition);
    }
    .social-btn:hover {
      background: rgba(187,255,52,.1);
      border-color: var(--accent);
      color: var(--accent);
    }
    .footer-copy {
      font-family: var(--font-mono);
      font-size: .72rem;
      color: var(--muted);
    }
    .footer-copy span { color: var(--accent); }

    /* ============================================================
       BACK TO TOP
    ============================================================ */
    #back-top {
      position: fixed;
      bottom: 28px; right: 28px;
      width: 44px; height: 44px;
      background: var(--accent);
      color: var(--bg);
      border-radius: 10px;
      display: flex; align-items: center; justify-content: center;
      opacity: 0; pointer-events: none;
      transition: opacity var(--transition), transform var(--transition);
      z-index: 100;
    }
    #back-top.show { opacity: 1; pointer-events: all; }
    #back-top:hover { transform: translateY(-3px); }

    /* ============================================================
       RESPONSIVE
    ============================================================ */
    @media (max-width: 1024px) {
      .skills-categories { grid-template-columns: 1fr 1fr; }
      .projects-grid { grid-template-columns: 1fr 1fr; }
      .certs-grid { grid-template-columns: 1fr 1fr; }
      .veille-grid { grid-template-columns: 1fr 1fr; }
      .interests-grid { grid-template-columns: repeat(4, 1fr); }
    }
    @media (max-width: 768px) {
      .nav-links, .nav-actions { display: none; }
      .burger { display: flex; }
      .hero-inner { grid-template-columns: 1fr; }
      .hero-avatar { display: none; }
      .about-grid { grid-template-columns: 1fr; }
      .skills-categories { grid-template-columns: 1fr; }
      .projects-grid { grid-template-columns: 1fr; }
      .certs-grid { grid-template-columns: 1fr; }
      .veille-grid { grid-template-columns: 1fr; }
      .interests-grid { grid-template-columns: repeat(3, 1fr); }
      .contact-grid { grid-template-columns: 1fr; }
      .form-row { grid-template-columns: 1fr; }
      .hero-stats { gap: 20px; }
      .section { padding: 64px 0; }
    }
    @media (max-width: 480px) {
      .interests-grid { grid-template-columns: repeat(2, 1fr); }
      .hero-name { letter-spacing: -1px; }
    }