:root {
      --dark: #0d1b3e;
      --darker: #071028;
      --card: #142050;
      --border: #1e3470;
      --accent: #f0b429;
      --accent2: #fcd34d;
      --accent3: #fb923c;
      --text: #f0ead6;
      --muted: #94a3b8;
      --tag-bg: #1a2a5e;
    }

    * { margin: 0; padding: 0; box-sizing: border-box; }
    html { scroll-behavior: smooth; }

    body {
      font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
      background: var(--dark);
      color: var(--text);
      line-height: 1.6;
      overflow-x: hidden;
    }

    nav {
      position: fixed; top: 0; left: 0; right: 0; z-index: 100;
      background: rgba(13,27,62,0.90);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border);
      padding: 0 2rem; height: 60px;
      display: flex; align-items: center; justify-content: space-between;
    }
    .nav-logo { font-weight: 700; font-size: 1rem; color: var(--accent); letter-spacing: 0.05em; }
    .nav-right { display: flex; align-items: center; gap: 2rem; }
    .nav-links { display: flex; gap: 2rem; list-style: none; }
    .nav-links a { color: var(--muted); text-decoration: none; font-size: 0.85rem; transition: color 0.2s; }
    .nav-links a:hover { color: var(--text); }

    /* Language toggle */
    .lang-toggle {
      display: flex;
      align-items: center;
      background: rgba(240,180,41,0.08);
      border: 1px solid rgba(240,180,41,0.25);
      border-radius: 20px;
      padding: 3px;
      gap: 2px;
    }
    .lang-btn {
      background: none;
      border: none;
      color: var(--muted);
      font-size: 0.75rem;
      font-weight: 700;
      padding: 4px 10px;
      border-radius: 16px;
      cursor: pointer;
      transition: all 0.2s;
      letter-spacing: 0.05em;
    }
    .lang-btn.active {
      background: var(--accent);
      color: #0d1b3e;
    }
    .lang-btn:not(.active):hover { color: var(--text); }

    .hero {
      min-height: 100vh; display: flex; align-items: center; justify-content: center;
      padding: 80px 2rem 4rem; position: relative; overflow: hidden;
    }
    .hero-bg {
      position: absolute; inset: 0;
      background: radial-gradient(ellipse 80% 60% at 50% 0%, rgba(240,180,41,0.12) 0%, transparent 60%),
                  radial-gradient(ellipse 60% 40% at 80% 80%, rgba(251,146,60,0.08) 0%, transparent 50%),
                  radial-gradient(ellipse 50% 30% at 10% 90%, rgba(252,211,77,0.07) 0%, transparent 50%);
    }
    .grid-lines {
      position: absolute; inset: 0;
      background-image: linear-gradient(rgba(240,180,41,0.06) 1px, transparent 1px),
                        linear-gradient(90deg, rgba(240,180,41,0.06) 1px, transparent 1px);
      background-size: 60px 60px;
    }
    .hero-content { position: relative; max-width: 900px; width: 100%; text-align: center; }
    .hero-badge {
      display: inline-block;
      background: rgba(240,180,41,0.12); border: 1px solid rgba(240,180,41,0.35);
      color: var(--accent); font-size: 0.75rem; padding: 4px 14px;
      border-radius: 20px; letter-spacing: 0.1em; text-transform: uppercase; margin-bottom: 1.5rem;
    }
    .hero-name { font-size: clamp(2.5rem, 7vw, 5rem); font-weight: 800; letter-spacing: -0.02em; line-height: 1.1; margin-bottom: 1rem; }
    .hero-name .accent { color: var(--accent); }
    .hero-subtitle { font-size: clamp(1rem, 2.5vw, 1.3rem); color: var(--muted); margin-bottom: 0.5rem; }
    .hero-exp { font-size: 0.9rem; color: var(--muted); margin-bottom: 2.5rem; }
    .hero-exp strong { color: var(--text); }
    .hero-cta { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }

    .btn {
      display: inline-flex; align-items: center; gap: 0.5rem;
      padding: 0.7rem 1.6rem; border-radius: 8px; font-size: 0.9rem; font-weight: 600;
      text-decoration: none; transition: all 0.2s; cursor: pointer; border: none;
    }
    .btn-primary { background: var(--accent); color: #0d1b3e; }
    .btn-primary:hover { background: #fcd34d; transform: translateY(-1px); }
    .btn-secondary { background: transparent; border: 1px solid var(--border); color: var(--text); }
    .btn-secondary:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-1px); }

    .stats {
      display: flex; gap: 2rem; justify-content: center; flex-wrap: wrap;
      margin-top: 4rem; padding: 2rem; border-top: 1px solid var(--border);
      max-width: 700px; margin-left: auto; margin-right: auto;
    }
    .stat { text-align: center; }
    .stat-value { font-size: 2.2rem; font-weight: 800; color: var(--accent); line-height: 1; }
    .stat-label { font-size: 0.75rem; color: var(--muted); text-transform: uppercase; letter-spacing: 0.08em; margin-top: 4px; }

    section { max-width: 1000px; margin: 0 auto; padding: 5rem 2rem; }
    .section-label { font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.15em; color: var(--accent); margin-bottom: 0.5rem; }
    .section-title { font-size: clamp(1.6rem, 4vw, 2.2rem); font-weight: 700; margin-bottom: 3rem; color: var(--text); }
    .section-title span { color: var(--accent); }

    /* ── About full page ── */
    #about {
      min-height: 100vh;
      max-width: 100%;
      display: flex;
      align-items: center;
      justify-content: center;
      padding: 80px 2rem;
      position: relative;
      overflow: hidden;
    }
    #about::before {
      content: '';
      position: absolute;
      inset: 0;
      background: radial-gradient(ellipse 70% 50% at 50% 50%, rgba(240,180,41,0.05) 0%, transparent 70%);
      pointer-events: none;
    }
    .about-inner {
      max-width: 860px;
      width: 100%;
      text-align: center;
    }
    .about-inner .section-label { margin-bottom: 1rem; }
    .about-inner .section-title { margin-bottom: 2.5rem; font-size: clamp(2rem, 5vw, 3rem); }
    .about-divider {
      width: 60px; height: 3px;
      background: linear-gradient(90deg, var(--accent), var(--accent3));
      border-radius: 2px;
      margin: 0 auto 2.5rem;
    }
    .about-quote {
      font-size: clamp(1.15rem, 2.5vw, 1.5rem);
      color: var(--muted);
      line-height: 1.85;
      font-weight: 400;
      max-width: 720px;
      margin: 0 auto 3rem;
    }
    .about-quote strong { color: var(--text); font-weight: 700; }
    .about-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 0.75rem;
      justify-content: center;
      margin-bottom: 3rem;
    }
    .about-tag {
      background: rgba(240,180,41,0.08);
      border: 1px solid rgba(240,180,41,0.2);
      color: var(--accent2);
      font-size: 0.82rem;
      font-weight: 600;
      padding: 6px 16px;
      border-radius: 20px;
      letter-spacing: 0.04em;
    }
    .spoken-langs {
      display: flex;
      gap: 1rem;
      flex-wrap: wrap;
      justify-content: center;
      border-top: 1px solid var(--border);
      padding-top: 2rem;
    }
    .spoken-lang-item {
      display: flex;
      align-items: center;
      gap: 0.6rem;
      background: var(--card);
      border: 1px solid var(--border);
      border-radius: 10px;
      padding: 0.6rem 1.2rem;
    }
    .spoken-lang-name { font-weight: 600; color: var(--text); font-size: 0.9rem; }
    .spoken-lang-level { font-size: 0.75rem; color: var(--muted); }

    .timeline { position: relative; padding-left: 2rem; }
    .timeline::before {
      content: ''; position: absolute; left: 0; top: 8px; bottom: 0; width: 2px;
      background: linear-gradient(to bottom, var(--accent), var(--accent3), transparent);
    }
    .timeline-item { position: relative; margin-bottom: 3rem; }
    .timeline-dot { position: absolute; left: -2.45rem; top: 8px; width: 12px; height: 12px; border-radius: 50%; background: var(--accent); border: 2px solid var(--dark); box-shadow: 0 0 12px rgba(240,180,41,0.6); }
    .timeline-dot.green { background: var(--accent2); box-shadow: 0 0 12px rgba(252,211,77,0.5); }
    .timeline-dot.purple { background: var(--accent3); box-shadow: 0 0 12px rgba(251,146,60,0.5); }
    .timeline-card { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 1.5rem; transition: border-color 0.2s, transform 0.2s; }
    .timeline-card:hover { border-color: var(--accent); transform: translateX(4px); }
    .company-name { font-size: 1.2rem; font-weight: 700; color: var(--text); }
    .company-period { font-size: 0.8rem; color: var(--accent); margin-left: 0.75rem; background: rgba(240,180,41,0.12); padding: 2px 10px; border-radius: 10px; }
    .company-period.green { color: var(--accent2); background: rgba(252,211,77,0.1); }
    .company-period.purple { color: var(--accent3); background: rgba(251,146,60,0.1); }
    .company-header { display: flex; align-items: center; margin-bottom: 1rem; flex-wrap: wrap; gap: 0.5rem; }
    .role { margin-bottom: 1rem; padding-bottom: 1rem; border-bottom: 1px solid var(--border); }
    .role:last-of-type { border-bottom: none; margin-bottom: 0; padding-bottom: 0; }
    .role-title { font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--muted); font-weight: 600; margin-bottom: 0.5rem; }
    .role ul { list-style: none; padding: 0; }
    .role ul li { font-size: 0.875rem; color: var(--muted); padding: 2px 0 2px 1rem; position: relative; }
    .role ul li::before { content: '›'; position: absolute; left: 0; color: var(--accent); }
    .tech-row { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-top: 1rem; }
    .tech-tag { background: var(--tag-bg); border: 1px solid var(--border); color: var(--muted); font-size: 0.72rem; padding: 3px 10px; border-radius: 6px; transition: all 0.15s; }
    .tech-tag:hover { color: var(--accent); border-color: var(--accent); }

    .skills-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 1.5rem; }
    .skill-category { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 1.5rem; }
    .skill-cat-title { font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--accent); margin-bottom: 1rem; display: flex; align-items: center; gap: 0.5rem; }
    .skill-pills { display: flex; flex-wrap: wrap; gap: 0.5rem; }
    .skill-pill { background: rgba(240,180,41,0.1); border: 1px solid rgba(240,180,41,0.25); color: #fcd34d; font-size: 0.8rem; padding: 5px 12px; border-radius: 20px; }
    .skill-pill.green { background: rgba(252,211,77,0.08); border-color: rgba(252,211,77,0.2); color: #fde68a; }
    .skill-pill.purple { background: rgba(251,146,60,0.08); border-color: rgba(251,146,60,0.2); color: #fdba74; }
    .skill-pill.yellow { background: rgba(251,191,36,0.08); border-color: rgba(251,191,36,0.2); color: #fcd34d; }
    .skill-pill.teal  { background: rgba(45,212,191,0.08); border-color: rgba(45,212,191,0.25); color: #5eead4; }

    /* ── Projects ── */
    .projects-block { margin-bottom: 3.5rem; }
    .projects-block-title {
      display: flex; align-items: center; gap: 0.75rem;
      font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.12em;
      color: var(--muted); font-weight: 700; margin-bottom: 1.25rem;
    }
    .projects-block-title::after {
      content: ''; flex: 1; height: 1px; background: var(--border);
    }
    .status-done { color: var(--accent2); }
    .status-wip  { color: var(--accent3); }
    .projects-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 1.25rem; }
    .project-card {
      background: var(--card); border: 1px solid var(--border);
      border-radius: 14px; padding: 1.4rem;
      display: flex; flex-direction: column; gap: 0.75rem;
      transition: border-color 0.2s, transform 0.2s;
    }
    .project-card:hover { border-color: var(--accent); transform: translateY(-3px); }
    .project-card-header { display: flex; align-items: flex-start; justify-content: space-between; gap: 0.5rem; }
    .project-status {
      font-size: 0.68rem; font-weight: 700; text-transform: uppercase;
      letter-spacing: 0.1em; padding: 3px 10px; border-radius: 20px;
      white-space: nowrap; flex-shrink: 0;
    }
    .project-status.done { background: rgba(252,211,77,0.1); color: var(--accent2); border: 1px solid rgba(252,211,77,0.25); }
    .project-status.wip  { background: rgba(251,146,60,0.1); color: var(--accent3); border: 1px solid rgba(251,146,60,0.25); }
    .project-name { font-size: 1rem; font-weight: 700; color: var(--text); }
    .project-link { color: var(--accent); font-size: 0.78rem; text-decoration: none; opacity: 0.85; }
    .project-link:hover { opacity: 1; text-decoration: underline; }
    .project-desc { font-size: 0.875rem; color: var(--muted); line-height: 1.65; }
    .project-tags { display: flex; flex-wrap: wrap; gap: 0.35rem; margin-top: 0.25rem; }
    .project-tag {
      background: var(--tag-bg); border: 1px solid var(--border);
      color: var(--muted); font-size: 0.68rem; padding: 2px 9px; border-radius: 5px;
    }

    .edu-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 1.5rem; }
    .edu-card { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 1.5rem; transition: border-color 0.2s; }
    .edu-card:hover { border-color: var(--accent3); }
    .edu-year { font-size: 0.75rem; color: var(--accent3); text-transform: uppercase; letter-spacing: 0.1em; margin-bottom: 0.5rem; }
    .edu-title { font-size: 1rem; font-weight: 600; color: var(--text); margin-bottom: 0.25rem; }
    .edu-school { font-size: 0.85rem; color: var(--muted); }

    .interests-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1.5rem; }
    .interest-card { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 1.5rem; text-align: center; transition: border-color 0.2s, transform 0.2s; }
    .interest-card:hover { border-color: var(--accent); transform: translateY(-3px); }
    .interest-icon { font-size: 2rem; margin-bottom: 0.75rem; }
    .interest-label { font-size: 0.9rem; color: var(--muted); }

    .contact-section { background: var(--card); border: 1px solid var(--border); border-radius: 16px; padding: 3rem; text-align: center; max-width: 600px; margin: 0 auto; }
    .contact-title { font-size: 1.8rem; font-weight: 700; margin-bottom: 0.75rem; }
    .contact-sub { color: var(--muted); margin-bottom: 2rem; }
    .contact-links { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }

    /* ── Formulaire de contact ───────────────────────────────────────────── */
    .contact-section { max-width: 680px; text-align: left; }
    .contact-form { display: flex; flex-direction: column; gap: 1.1rem; margin-top: 1.8rem; }
    .form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
    @media (max-width: 560px) { .form-row { grid-template-columns: 1fr; } }

    .form-group { display: flex; flex-direction: column; gap: 0.4rem; }
    .form-group label {
      font-size: 0.82rem; font-weight: 600; color: var(--muted);
      text-transform: uppercase; letter-spacing: 0.05em;
    }
    .form-group input,
    .form-group textarea,
    .form-group select {
      background: rgba(255,255,255,0.04);
      border: 1px solid var(--border);
      border-radius: 8px;
      padding: 0.75rem 1rem;
      color: var(--text);
      font-size: 0.95rem;
      font-family: inherit;
      transition: border-color 0.2s, box-shadow 0.2s;
      outline: none;
      width: 100%;
    }
    .form-group input:focus,
    .form-group textarea:focus {
      border-color: var(--accent);
      box-shadow: 0 0 0 3px rgba(240,180,41,0.12);
    }
    .form-group input::placeholder,
    .form-group textarea::placeholder { color: var(--muted); opacity: 0.6; }
    .form-group textarea { resize: vertical; min-height: 130px; }

    .file-label {
      display: flex; align-items: center; gap: 0.7rem;
      background: rgba(255,255,255,0.04);
      border: 1px dashed var(--border);
      border-radius: 8px;
      padding: 0.85rem 1rem;
      cursor: pointer;
      font-size: 0.9rem;
      color: var(--muted);
      transition: border-color 0.2s, background 0.2s;
    }
    .file-label:hover { border-color: var(--accent); background: rgba(240,180,41,0.05); color: var(--text); }
    .file-label input[type="file"] { display: none; }
    .file-name { font-size: 0.82rem; color: var(--accent); margin-top: 0.3rem; min-height: 1rem; }

    .form-submit { display: flex; align-items: center; gap: 1rem; flex-wrap: wrap; margin-top: 0.4rem; }
    .btn-submit {
      background: var(--accent); color: var(--darker);
      border: none; border-radius: 8px;
      padding: 0.85rem 2rem;
      font-size: 0.95rem; font-weight: 700;
      cursor: pointer; transition: opacity 0.2s, transform 0.15s;
      display: flex; align-items: center; gap: 0.5rem;
    }
    .btn-submit:hover { opacity: 0.88; transform: translateY(-1px); }
    .btn-submit:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }
    .btn-submit .spinner {
      width: 16px; height: 16px;
      border: 2px solid var(--darker);
      border-top-color: transparent;
      border-radius: 50%;
      animation: spin 0.7s linear infinite;
      display: none;
    }
    .btn-submit.loading .spinner { display: block; }
    .btn-submit.loading .btn-text { opacity: 0.7; }
    @keyframes spin { to { transform: rotate(360deg); } }

    .form-msg {
      padding: 0.75rem 1rem; border-radius: 8px;
      font-size: 0.88rem; font-weight: 600;
      display: none;
    }
    .form-msg.success { background: rgba(34,197,94,0.12); border: 1px solid rgba(34,197,94,0.3); color: #4ade80; }
    .form-msg.error   { background: rgba(239,68,68,0.12);  border: 1px solid rgba(239,68,68,0.3);  color: #f87171; }
    .form-msg.visible { display: block; }

    .contact-also {
      margin-top: 2rem; padding-top: 1.5rem;
      border-top: 1px solid var(--border);
      display: flex; gap: 1rem; flex-wrap: wrap;
    }

    footer { text-align: center; padding: 2rem; border-top: 1px solid var(--border); color: var(--muted); font-size: 0.8rem; }

    /* ── TUTORIALS ── */
    .tuto-hero { padding: 100px 2rem 3rem; max-width: 900px; margin: 0 auto; }
    .tuto-hero .breadcrumb { font-size: 0.8rem; color: var(--muted); margin-bottom: 1.5rem; }
    .tuto-hero .breadcrumb a { color: var(--accent); text-decoration: none; }
    .tuto-badge { display: inline-block; background: rgba(240,180,41,0.12); border: 1px solid rgba(240,180,41,0.3); color: var(--accent); font-size: 0.75rem; font-weight: 700; padding: 4px 12px; border-radius: 20px; margin-bottom: 1rem; letter-spacing: 0.05em; text-transform: uppercase; }
    .tuto-title { font-size: 2.4rem; font-weight: 800; line-height: 1.2; margin-bottom: 1rem; }
    .tuto-meta { display: flex; gap: 1.5rem; color: var(--muted); font-size: 0.85rem; margin-bottom: 1.5rem; flex-wrap: wrap; }
    .tuto-meta span { display: flex; align-items: center; gap: 0.4rem; }
    .tuto-intro { font-size: 1.1rem; color: var(--muted); line-height: 1.8; border-left: 3px solid var(--accent); padding-left: 1.2rem; }

    .tuto-body { max-width: 900px; margin: 0 auto; padding: 0 2rem 4rem; }
    .tuto-body h2 { font-size: 1.6rem; font-weight: 700; margin: 2.5rem 0 1rem; color: var(--accent2); }
    .tuto-body h3 { font-size: 1.2rem; font-weight: 600; margin: 2rem 0 0.75rem; color: var(--text); }
    .tuto-body p { color: var(--muted); line-height: 1.8; margin-bottom: 1rem; }
    .tuto-body ul, .tuto-body ol { color: var(--muted); line-height: 1.8; margin-bottom: 1rem; padding-left: 1.5rem; }
    .tuto-body li { margin-bottom: 0.4rem; }
    .tuto-body strong { color: var(--text); }

    .code-block { background: var(--darker); border: 1px solid var(--border); border-radius: 10px; margin: 1.5rem 0; overflow: hidden; }
    .code-block-header { display: flex; align-items: center; justify-content: space-between; background: rgba(255,255,255,0.04); padding: 0.6rem 1rem; border-bottom: 1px solid var(--border); font-size: 0.78rem; color: var(--muted); font-family: 'Courier New', monospace; }
    .code-block-header .dots { display: flex; gap: 6px; }
    .code-block-header .dot { width: 10px; height: 10px; border-radius: 50%; }
    .code-block-header .dot.r { background: #ff5f56; }
    .code-block-header .dot.y { background: #ffbd2e; }
    .code-block-header .dot.g { background: #27c93f; }
    .code-block pre { padding: 1.2rem 1.4rem; overflow-x: auto; font-size: 0.85rem; line-height: 1.7; }
    .code-block code { font-family: 'Courier New', Consolas, monospace; color: #e2e8f0; }
    .code-block .kw { color: #c678dd; }
    .code-block .str { color: #98c379; }
    .code-block .cm { color: #5c6370; font-style: italic; }
    .code-block .fn { color: #61afef; }
    .code-block .num { color: #d19a66; }
    .code-block .var { color: #e06c75; }

    .tuto-tip { background: rgba(240,180,41,0.08); border: 1px solid rgba(240,180,41,0.25); border-radius: 10px; padding: 1rem 1.2rem; margin: 1.5rem 0; font-size: 0.9rem; color: var(--text); }
    .tuto-tip::before { content: '💡 '; }
    .tuto-warn { background: rgba(251,146,60,0.08); border: 1px solid rgba(251,146,60,0.25); border-radius: 10px; padding: 1rem 1.2rem; margin: 1.5rem 0; font-size: 0.9rem; color: var(--text); }
    .tuto-warn::before { content: '⚠️ '; }

    .tuto-result { background: var(--card); border: 1px solid var(--border); border-left: 3px solid #27c93f; border-radius: 10px; padding: 1rem 1.2rem; margin: 1.5rem 0; font-size: 0.9rem; color: var(--text); }
    .tuto-result::before { content: '✅ Résultat attendu : '; font-weight: 700; color: #27c93f; display: block; margin-bottom: 0.4rem; }

    .step-num { display: inline-flex; align-items: center; justify-content: center; width: 28px; height: 28px; background: var(--accent); color: var(--darker); border-radius: 50%; font-weight: 800; font-size: 0.85rem; margin-right: 0.6rem; flex-shrink: 0; }

    .tuto-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 1.5rem; margin: 2rem 0; }
    .tuto-card { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 1.5rem; text-decoration: none; transition: border-color 0.2s, transform 0.2s; display: block; }
    .tuto-card:hover { border-color: var(--accent); transform: translateY(-3px); }
    .tuto-card-cat { font-size: 0.72rem; color: var(--accent); font-weight: 700; text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 0.5rem; }
    .tuto-card-title { font-size: 1rem; font-weight: 700; color: var(--text); margin-bottom: 0.4rem; }
    .tuto-card-desc { font-size: 0.82rem; color: var(--muted); line-height: 1.5; }
    .tuto-card-time { font-size: 0.75rem; color: var(--muted); margin-top: 0.8rem; }

    .tuto-nav-btn { display: inline-flex; align-items: center; gap: 0.5rem; background: var(--card); border: 1px solid var(--border); color: var(--text); text-decoration: none; padding: 0.6rem 1.2rem; border-radius: 8px; font-size: 0.85rem; transition: border-color 0.2s; }
    .tuto-nav-btn:hover { border-color: var(--accent); color: var(--accent); }
    .tuto-footer-nav { display: flex; justify-content: space-between; gap: 1rem; margin-top: 3rem; padding-top: 2rem; border-top: 1px solid var(--border); flex-wrap: wrap; }

    /* ── Définitions de termes ── */
    .tuto-def { background: rgba(30,52,112,0.5); border: 1px solid var(--border); border-left: 3px solid var(--accent2); border-radius: 10px; padding: 1rem 1.2rem; margin: 1.2rem 0; font-size: 0.9rem; }
    .tuto-def-title { font-size: 0.75rem; font-weight: 700; color: var(--accent2); text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: 0.5rem; display: flex; align-items: center; gap: 0.4rem; }
    .tuto-def p { color: var(--muted); margin-bottom: 0.3rem; }
    .tuto-def p:last-child { margin-bottom: 0; }
    .tuto-def strong { color: var(--text); }

    /* Explication de code inline */
    .tuto-explain { background: rgba(30,52,112,0.25); border-radius: 8px; padding: 0.8rem 1rem; margin: 0.8rem 0 1.4rem; font-size: 0.88rem; color: var(--muted); line-height: 1.7; }
    .tuto-explain strong { color: var(--text); }

    /* Boîte de mise en avant */
    .tuto-why { background: rgba(251,146,60,0.07); border: 1px solid rgba(251,146,60,0.2); border-radius: 10px; padding: 0.9rem 1.1rem; margin: 1.2rem 0; font-size: 0.88rem; color: var(--text); }
    .tuto-why::before { content: '🤔 '; font-weight: 700; color: var(--accent3); }

    /* Badge inline pour les termes */
    .term { display: inline-block; background: rgba(240,180,41,0.12); color: var(--accent); font-size: 0.78rem; font-weight: 700; padding: 1px 7px; border-radius: 4px; font-family: 'Courier New', monospace; }

    .reveal { opacity: 0; transform: translateY(20px); transition: opacity 0.6s ease, transform 0.6s ease; }
    .reveal.visible { opacity: 1; transform: translateY(0); }
    .cursor { display: inline-block; width: 3px; height: 1em; background: var(--accent); margin-left: 2px; animation: blink 1s infinite; vertical-align: text-bottom; }
    @keyframes blink { 0%, 100% { opacity: 1; } 50% { opacity: 0; } }

    @media (max-width: 900px) {
      nav {
        height: auto;
        min-height: 60px;
        padding: 0.9rem 1rem;
        align-items: flex-start;
        gap: 1rem;
      }
      .nav-right {
        flex: 1;
        min-width: 0;
        flex-direction: column;
        align-items: flex-end;
        gap: 0.75rem;
      }
      .nav-links {
        width: 100%;
        flex-wrap: wrap;
        justify-content: flex-end;
        gap: 0.75rem 1rem;
      }
      .nav-links a { font-size: 0.78rem; }
      .lang-toggle { align-self: flex-end; }
      .hero { padding-top: 128px; }
      .tuto-hero { padding-top: 140px; }
    }

    @media (max-width: 600px) {
      nav {
        padding: 0.85rem 1rem;
        flex-direction: column;
        align-items: stretch;
      }
      .nav-logo {
        display: block;
        text-align: center;
      }
      .nav-right {
        align-items: stretch;
      }
      .nav-links {
        justify-content: center;
        gap: 0.6rem 0.9rem;
      }
      .nav-links a { font-size: 0.74rem; }
      .lang-toggle {
        align-self: center;
      }
      section { padding: 3rem 1rem; }
      .hero { padding-top: 164px; }
      .tuto-hero { padding: 170px 1rem 2.5rem; }
      .tuto-body { padding: 0 1rem 3rem; }
      .tuto-title { font-size: 2rem; }
    }