@import url('https://fonts.googleapis.com/css2?family=Rajdhani:wght@400;500;600;700&family=Inter:wght@300;400;500&display=swap');

:root {
    --black: #0a0a0a;
    --dark: #111111;
    --dark-2: #1a1a1a;
    --dark-3: #242424;
    --white: #f5f5f0;
    --off-white: #e8e8e0;
    --accent: #c8b97a;
    --accent-dim: #a09060;
    --mid: #888;
    --border: rgba(200,185,122,0.2);
    --transition: 0.35s cubic-bezier(0.4,0,0.2,1);
  }

  * { margin: 0; padding: 0; box-sizing: border-box; }
  html { scroll-behavior: smooth; }
  body {
    background: var(--black);
    color: var(--white);
    font-family: 'Inter', sans-serif;
    font-weight: 300;
    overflow-x: hidden;
  }

  /* NAV */
  nav {
    position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
    background: rgba(10,10,10,0.96);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
    display: flex; align-items: center; justify-content: space-between;
    padding: 0 40px; height: 72px;
  }

  .nav-left-group {
    display: flex;
    align-items: center;
    gap: 20px;
  }

  .nav-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    cursor: pointer;
  }

  .nav-logo-letters {
    font-family: 'Rajdhani', sans-serif;
    font-size: 30px;
    color: var(--white);
    letter-spacing: 4px;
  }

  .nav-logo-sub {
    font-size: 10px;
    color: var(--mid);
    font-weight: 400;
    letter-spacing: 1px;
    line-height: 1.3;
    text-transform: uppercase;
    border-left: 1px solid var(--border);
    padding-left: 12px;
  }

  .nav-tabs {
    display: flex;
    align-items: center;
    gap: 6px;
  }

  .nav-tab {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 14px;
    border-radius: 20px;
    cursor: pointer;
    font-size: 12px;
    font-weight: 500;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    transition: var(--transition);
    border: 1px solid transparent;
  }

  .nav-tab.formation {
    background: rgba(245,245,240,0.08);
    color: var(--white);
    border-color: rgba(245,245,240,0.15);
  }

  .nav-tab.formation:hover {
    background: var(--white);
    color: var(--black);
  }

  .nav-tab.ingenierie {
    background: rgba(200,185,122,0.1);
    color: var(--accent);
    border-color: var(--border);
  }

  .nav-tab.ingenierie:hover,
  .nav-tab.ingenierie.active-tab {
    background: var(--accent);
    color: var(--black);
  }

  .nav-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: currentColor;
    opacity: 0.7;
  }

  .nav-links {
    display: flex;
    align-items: center;
    gap: 28px;
  }

  .nav-links a {
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--mid);
    text-decoration: none;
    transition: color var(--transition);
    cursor: pointer;
  }

  .nav-links a:hover,
  .nav-links a.active-link {
    color: var(--white);
  }

  .nav-links a.nav-cta {
    background: var(--accent);
    color: var(--black);
    padding: 10px 20px;
    border-radius: 2px;
    font-weight: 700;
    letter-spacing: 1.5px;
  }

  .nav-links a.nav-cta:hover {
    background: var(--white);
  }

  /* DROPDOWN */
  .dropdown {
    position: relative;
    display: flex;
    align-items: center;
  }

  .dropdown-toggle {
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--mid);
    text-decoration: none;
    transition: color var(--transition);
    cursor: pointer;
    padding: 8px 0;
  }

  .dropdown-toggle:hover {
    color: var(--white);
  }

  .dropdown-menu {
    position: absolute;
    top: calc(100% + 14px);
    left: 0;
    min-width: 250px;
    background: var(--dark-2);
    border: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    padding: 10px 0;
    opacity: 0;
    transform: translateY(8px);
    transition: var(--transition);
    z-index: 2000;
  }

  .dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .dropdown-menu a {
    padding: 12px 18px;
    color: var(--off-white);
    text-decoration: none;
    font-size: 11px;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    transition: var(--transition);
  }

  .dropdown-menu a:hover {
    background: rgba(200,185,122,0.08);
    color: var(--accent);
  }

  /* PAGES */
  .page {
    display: none;
    padding-top: 72px;
    min-height: 100vh;
  }

  .page.active {
    display: block;
  }

  /* HERO */
  .hero {
    min-height: calc(100vh - 72px);
    display: grid;
    grid-template-columns: 1fr 1fr;
    position: relative;
    overflow: hidden;
    background: var(--black);
  }

  .hero-half {
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    padding: 60px 60px 80px;
    overflow: hidden;
    min-height: calc(100vh - 72px);
  }

  .hero-half.dark { background: var(--black); }

  /* HERO 3D CANVAS */
  .hero-3d-panel {
    position: relative;
    overflow: hidden;
    background: var(--black);
    display: flex;
    align-items: center;
    justify-content: center;
    border-left: 1px solid var(--border);
  }

  #hero-canvas {
    width: 100%;
    height: 100%;
    display: block;
  }

  .hero-3d-label {
    position: absolute;
    bottom: 32px;
    right: 32px;
    font-size: 9px;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--mid);
    opacity: 0.5;
  }

  .hero-3d-ring {
    position: absolute;
    width: 320px;
    height: 320px;
    border-radius: 50%;
    border: 1px solid rgba(200,185,122,0.08);
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    animation: heroRing 8s linear infinite;
    pointer-events: none;
  }

  .hero-3d-ring:nth-child(2) {
    width: 500px; height: 500px;
    border-color: rgba(200,185,122,0.04);
    animation-duration: 14s;
    animation-direction: reverse;
  }

  @keyframes heroRing {
    from { transform: translate(-50%, -50%) rotate(0deg); }
    to { transform: translate(-50%, -50%) rotate(360deg); }
  }

  /* scanning line */
  .hero-scan-line {
    position: absolute;
    left: 0; right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(200,185,122,0.4), transparent);
    animation: scanLine 4s ease-in-out infinite;
    pointer-events: none;
  }

  @keyframes scanLine {
    0% { top: 10%; opacity: 0; }
    20% { opacity: 1; }
    80% { opacity: 1; }
    100% { top: 90%; opacity: 0; }
  }

  /* floating data points */
  .hero-data-point {
    position: absolute;
    display: flex;
    flex-direction: column;
    gap: 2px;
    pointer-events: none;
  }

  .hero-data-value {
    font-family: 'Space Mono', monospace;
    font-size: 13px;
    color: var(--accent);
    font-weight: 700;
  }

  .hero-data-label {
    font-size: 8px;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--mid);
    opacity: 0.7;
  }

  .dp1 { top: 18%; left: 8%; animation: dpFloat 6s ease-in-out infinite; }
  .dp2 { top: 55%; right: 8%; animation: dpFloat 6s ease-in-out infinite 2s; }
  .dp3 { bottom: 22%; left: 12%; animation: dpFloat 6s ease-in-out infinite 4s; }

  @keyframes dpFloat {
    0%, 100% { transform: translateY(0); opacity: 0.6; }
    50% { transform: translateY(-8px); opacity: 1; }
  }

  .hero-bg-grid {
    position: absolute;
    inset: 0;
    background-image:
      linear-gradient(rgba(200,185,122,0.04) 1px, transparent 1px),
      linear-gradient(90deg, rgba(200,185,122,0.04) 1px, transparent 1px);
    background-size: 60px 60px;
    pointer-events: none;
  }

  .hero-corner-label {
    position: absolute;
    top: 40px;
    left: 60px;
    font-size: 9px;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--mid);
    font-weight: 500;
  }

  .hero-content {
    position: relative;
    z-index: 2;
    max-width: 760px;
  }

  .hero-title {
    font-family: 'Rajdhani', sans-serif;
    font-size: clamp(600px, 5vw, 70px);
    line-height: 0.9;
    letter-spacing: 2px;
    color: var(--white);
    margin-bottom: 24px;
  }

  .hero-title .accent { color: var(--accent); }

  .hero-desc {
    font-size: 15px;
    line-height: 1.7;
    color: var(--mid);
    max-width: 650px;
    margin-bottom: 40px;
  }

  .hero-cta {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    background: var(--accent);
    color: var(--black);
    padding: 16px 32px;
    text-decoration: none;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: uppercase;
    border-radius: 2px;
    transition: var(--transition);
    cursor: pointer;
    border: none;
  }

  .hero-cta:hover {
    background: var(--white);
    transform: translateX(4px);
  }

  /* SECTION GENERIC */
  .services-section,
  .examples-section,
  .content-section,
  .contact-section,
  .model-section {
    padding: 90px 60px;
  }

  .services-section,
  .examples-section,
  .model-section {
    background: var(--dark);
  }

  .content-section,
  .contact-section {
    background: var(--black);
  }

  .section-label {
    font-size: 17px;
    letter-spacing: 4px;
    text-transform: uppercase;
    color: var(--accent);
    font-weight: 500;
    margin-bottom: 12px;
    display: block;
  }

  .section-title {
    font-family: 'Rajdhani', sans-serif;
    font-size: 40px;
    letter-spacing: 2px;
    color: var(--white);
    line-height: 1;
  }

  .section-sub {
    font-size: 13px;
    color: var(--mid);
    margin-top: 8px;
    font-style: italic;
  }

  .section-header {
    margin-bottom: 60px;
  }

  /* SERVICES */
  .services-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 2px;
  }

  .service-card {
    position: relative;
    background: var(--dark-2);
    border: 1px solid rgba(200,185,122,0.08);
    padding: 48px 28px 36px;
    cursor: pointer;
    overflow: hidden;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    min-height: 250px;
  }

  .service-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--accent) 0%, transparent 60%);
    opacity: 0;
    transition: opacity var(--transition);
  }

  .service-card:hover::before { opacity: 0.06; }

  .service-card:hover {
    border-color: var(--border);
    transform: translateY(-4px);
  }

  .service-name {
    font-family: 'Rajdhani', sans-serif;
    font-size: 28px;
    letter-spacing: 2px;
    color: var(--white);
    line-height: 1.1;
    margin-bottom: 14px;
  }

  .service-desc {
    font-size: 14px;
    color: var(--mid);
    line-height: 1.7;
  }

  .service-arrow {
    margin-top: 20px;
    color: var(--accent);
    font-size: 18px;
    transform: translateX(0);
    transition: var(--transition);
    display: inline-block;
  }

  .service-card:hover .service-arrow {
    transform: translateX(8px);
  }

  /* INNER HERO */
  .inner-hero {
    padding: 100px 60px 60px;
    background: var(--black);
    position: relative;
    overflow: hidden;
    border-bottom: 1px solid var(--border);
  }

  .inner-hero-bg {
    position: absolute;
    inset: 0;
    background-image:
      linear-gradient(rgba(200,185,122,0.03) 1px, transparent 1px),
      linear-gradient(90deg, rgba(200,185,122,0.03) 1px, transparent 1px);
    background-size: 40px 40px;
    pointer-events: none;
  }

  .inner-hero-content {
    position: relative;
    z-index: 2;
  }

  .breadcrumb {
    font-size: 10px;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--mid);
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 8px;
  }

  .breadcrumb span { color: var(--accent); }

  .inner-title {
    font-family: 'Rajdhani', sans-serif;
    font-size: clamp(64px, 8vw, 110px);
    letter-spacing: 3px;
    line-height: 0.9;
    color: var(--white);
    margin-bottom: 24px;
  }

  .inner-title span { color: var(--accent); }

  .inner-desc {
    max-width: 700px;
    font-size: 15px;
    line-height: 1.7;
    color: var(--mid);
  }

  /* EXAMPLES */
  .examples-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    margin-top: 48px;
  }

  .example-card {
    background: var(--dark-2);
    border: 1px solid rgba(200,185,122,0.1);
    padding: 48px;
    position: relative;
    overflow: hidden;
    transition: var(--transition);
  }

  .example-card::after {
    content: '';
    position: absolute;
    bottom: 0; left: 0; right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--accent), transparent);
    opacity: 0;
    transition: opacity var(--transition);
  }

  .example-card:hover::after { opacity: 1; }

  .example-num {
    font-family: 'Space Mono', monospace;
    font-size: 10px;
    color: var(--accent);
    letter-spacing: 2px;
    margin-bottom: 20px;
    display: block;
  }

  .example-icon {
    font-size: 40px;
    margin-bottom: 16px;
    display: block;
  }

  .example-text {
    font-size: 14px;
    line-height: 1.7;
    color: var(--off-white);
  }

  /* CONTENT */
  .content-grid {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 48px;
    margin-top: 48px;
  }

  .content-block-title {
    font-family: 'Rajdhani', sans-serif;
    font-size: 22px;
    letter-spacing: 2px;
    color: var(--accent);
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border);
  }

  .content-block-text {
    font-size: 15px;
    line-height: 1.8;
    color: var(--mid);
  }

  .content-block-list {
    list-style: none;
    margin-top: 12px;
  }

  .content-block-list li {
    font-size: 15px;
    color: var(--mid);
    padding: 10px 0;
    border-bottom: 1px solid rgba(200,185,122,0.06);
    display: flex;
    align-items: flex-start;
    gap: 10px;
    line-height: 1.6;
  }

  /* ─── ALTERNATING SPLIT LAYOUT ─── */
  .split-section {
    padding: 0 60px;
    background: var(--dark);
  }

  .split-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0;
    align-items: stretch;
    border-bottom: 1px solid var(--border);
    min-height: 420px;
  }

  .split-row:last-child {
    border-bottom: none;
  }

  .split-row.reverse .split-text { order: 2; }
  .split-row.reverse .split-visual { order: 1; }

  .split-text {
    padding: 64px 56px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    border-right: 1px solid var(--border);
  }

  .split-row.reverse .split-text {
    border-right: none;
    border-left: 1px solid var(--border);
  }

  .split-num {
    font-family: 'Space Mono', monospace;
    font-size: 10px;
    color: var(--accent);
    letter-spacing: 3px;
    margin-bottom: 20px;
    display: block;
  }

  .split-icon {
    font-size: 36px;
    margin-bottom: 16px;
    display: block;
  }

  .split-title {
    font-family: 'Rajdhani', sans-serif;
    font-size: 32px;
    letter-spacing: 2px;
    color: var(--white);
    line-height: 1.1;
    margin-bottom: 16px;
  }

  .split-desc {
    font-size: 15px;
    line-height: 1.8;
    color: var(--mid);
  }

  .split-visual {
    background: var(--dark-2);
    display: flex;
    align-items: stretch;
    justify-content: center;
    position: relative;
    overflow: hidden;
    min-height: 380px;
    height: 100%;
  }

  .split-canvas {
    width: 100%;
    height: 100%;
    min-height: 380px;
    display: block;
    cursor: grab;
    touch-action: none;
    position: absolute;
    top: 0;
    left: 0;
  }

  .split-canvas:active { cursor: grabbing; }

  .split-3d-hint {
    position: absolute;
    bottom: 16px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 9px;
    letter-spacing: 2px;
    color: var(--mid);
    text-transform: uppercase;
    opacity: 0.45;
    white-space: nowrap;
  }

  /* sim photo placeholder */
  .split-photo {
    width: 100%;
    height: 100%;
    min-height: 380px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 16px;
    background: linear-gradient(145deg, #0d0d0d, #1a1a1a);
    position: relative;
    overflow: hidden;
  }

  .split-photo-label {
    font-family: 'Space Mono', monospace;
    font-size: 10px;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--accent);
    opacity: 0.6;
  }

  .split-photo-icon {
    font-size: 56px;
    opacity: 0.2;
  }

  /* animated FEA heatmap placeholder */
  .fea-viz {
    width: 100%;
    height: 100%;
    min-height: 380px;
    position: relative;
    overflow: hidden;
    background: #0a0a0a;
  }

  .fea-canvas {
    width: 100%;
    height: 100%;
    display: block;
  }

  .content-block-list li::before {
    content: '→';
    color: var(--accent);
    flex-shrink: 0;
    font-size: 11px;
    margin-top: 1px;
  }

  /* MODEL VIEWER */
  .model-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    margin-top: 40px;
  }

  .model-card {
    background: var(--dark-2);
    border: 1px solid rgba(200,185,122,0.1);
    padding: 24px;
    transition: var(--transition);
  }

  .model-card:hover {
    border-color: var(--border);
    transform: translateY(-4px);
  }

  .model-title {
    font-family: 'Rajdhani', sans-serif;
    font-size: 24px;
    letter-spacing: 2px;
    color: var(--accent);
    margin-bottom: 12px;
  }

  .model-desc {
    font-size: 13px;
    color: var(--mid);
    line-height: 1.7;
    margin-bottom: 20px;
  }

  .model3d-canvas {
    width: 100%;
    height: 420px;
    background: linear-gradient(145deg, #0d0d0d, #1a1a1a);
    border: 1px solid rgba(200,185,122,0.08);
    border-radius: 4px;
    display: block;
    cursor: grab;
    touch-action: none;
  }
  .model3d-canvas:active { cursor: grabbing; }
  .model3d-hint {
    font-size: 10px;
    letter-spacing: 2px;
    color: var(--mid);
    text-transform: uppercase;
    text-align: center;
    margin-top: 10px;
    opacity: 0.5;
  }

  /* SIM */
  .sim-highlight {
    background: var(--dark-3);
    border: 1px solid var(--border);
    padding: 64px;
    margin: 0 60px 0;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
  }

  .sim-highlight-title {
    font-family: 'Rajdhani', sans-serif;
    font-size: 48px;
    letter-spacing: 2px;
    line-height: 1;
    color: var(--white);
    margin-bottom: 20px;
  }

  .sim-highlight-text {
    font-size: 14px;
    line-height: 1.75;
    color: var(--mid);
  }

  .sim-analyses {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2px;
  }

  .sim-analysis-item {
    background: var(--dark-2);
    padding: 24px;
    display: flex;
    align-items: center;
    gap: 16px;
    border: 1px solid rgba(200,185,122,0.06);
    transition: var(--transition);
  }

  .sim-analysis-item:hover {
    border-color: var(--border);
  }

  .sim-analysis-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--accent);
    flex-shrink: 0;
  }

  .sim-analysis-label {
    font-size: 12px;
    font-weight: 500;
    color: var(--off-white);
  }

  /* CONTACT */
  .contact-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: start;
  }

  .contact-info-title {
    font-family: 'Rajdhani', sans-serif;
    font-size: 48px;
    letter-spacing: 2px;
    line-height: 1;
    margin-bottom: 24px;
    color: var(--white);
  }

  .contact-info-text {
    font-size: 14px;
    line-height: 1.75;
    color: var(--mid);
    margin-bottom: 40px;
  }

  .contact-detail {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px 0;
    border-bottom: 1px solid var(--border);
  }

  .contact-detail-label {
    font-size: 9px;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--accent);
    min-width: 80px;
  }

  .contact-detail-value {
    font-size: 13px;
    color: var(--off-white);
  }

  .contact-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
  }

  .form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
  }

  .form-label {
    font-size: 9px;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--mid);
  }

  .form-input,
  .form-textarea {
    background: var(--dark-2);
    border: 1px solid rgba(200,185,122,0.1);
    padding: 16px 20px;
    color: var(--white);
    font-family: 'Inter', sans-serif;
    font-size: 13px;
    outline: none;
    transition: border-color var(--transition);
    border-radius: 2px;
    resize: none;
    width: 100%;
  }

  .form-input:focus,
  .form-textarea:focus {
    border-color: var(--accent);
  }

  .form-textarea { min-height: 120px; }

  .form-btn {
    background: var(--accent);
    color: var(--black);
    border: none;
    padding: 18px 36px;
    font-family: 'Inter', sans-serif;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: uppercase;
    cursor: pointer;
    align-self: flex-start;
    border-radius: 2px;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 10px;
  }

  .form-btn:hover { background: var(--white); }

  /* EMPTY PAGE */
  .empty-page {
    min-height: 50vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 16px;
    text-align: center;
    padding: 60px;
  }

  .empty-icon {
    font-size: 64px;
    opacity: 0.3;
  }

  .empty-title {
    font-family: 'Rajdhani', sans-serif;
    font-size: 40px;
    color: var(--mid);
    letter-spacing: 3px;
  }

  .empty-sub {
    font-size: 13px;
    color: rgba(136,136,136,0.6);
  }

  /* FOOTER */
  footer {
    background: var(--dark);
    border-top: 1px solid var(--border);
    padding: 40px 60px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 80px;
  }

  .footer-logo {
    font-family: 'Rajdhani', sans-serif;
    font-size: 24px;
    letter-spacing: 4px;
    color: var(--mid);
  }

  .footer-copy {
    font-size: 11px;
    color: rgba(136,136,136,0.5);
    letter-spacing: 1px;
  }

  .footer-links {
    display: flex;
    gap: 24px;
  }

  .footer-links a {
    font-size: 10px;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: rgba(136,136,136,0.5);
    text-decoration: none;
    transition: color var(--transition);
    cursor: pointer;
  }

  .footer-links a:hover {
    color: var(--accent);
  }

  /* ANIMATIONS */
  @keyframes fadeUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
  }

  .anim { animation: fadeUp 0.6s ease both; }
  .d1 { animation-delay: 0.05s; }
  .d2 { animation-delay: 0.15s; }
  .d3 { animation-delay: 0.25s; }
  .d4 { animation-delay: 0.35s; }
  .d5 { animation-delay: 0.45s; }

  /* RESPONSIVE */
  @media (max-width: 1100px) {
    .services-grid { grid-template-columns: repeat(3, 1fr); }
    .content-grid { grid-template-columns: 1fr 1fr; }
  }

  @media (max-width: 900px) {
    .hero { grid-template-columns: 1fr; }
    .hero-3d-panel { display: none; }
    .split-row, .split-row.reverse {
      grid-template-columns: 1fr;
    }
    .split-row.reverse .split-text { order: 0; }
    .split-row.reverse .split-visual { order: 1; }
    .split-text { border-right: none !important; border-left: none !important; border-bottom: 1px solid var(--border); }
  }

  @media (max-width: 768px) {
    nav { padding: 0 20px; }
    .nav-logo-sub, .nav-links { display: none; }

    .hero-half,
    .services-section,
    .inner-hero,
    .examples-section,
    .content-section,
    .contact-section,
    .model-section,
    .split-section {
      padding: 60px 24px;
    }

    .split-text { padding: 40px 24px; }

    .services-grid,
    .examples-grid,
    .content-grid,
    .contact-section,
    .sim-highlight,
    .model-grid,
    .sim-analyses {
      grid-template-columns: 1fr;
    }

    .sim-highlight {
      margin: 0 24px;
      padding: 40px 24px;
    }

    footer {
      flex-direction: column;
      gap: 16px;
      text-align: center;
      padding: 40px 24px;
    }
  }
  /* ============================= */
/* RÉDUCTION GLOBALE DES TITRES */
/* ============================= */

/* TITRES PRINCIPAUX (hero, pages, etc.) */
.hero-title,
.inner-title,
.sim-highlight-title,
.contact-info-title {
  font-size: clamp(32px, 4vw, 52px) !important;
  line-height: 1.05 !important;
}

/* TITRES SECTIONS */
.section-title {
  font-size: 40px !important;
}

/* TITRES SERVICES */
.service-name {
  font-size: 22px !important;
}

/* TITRES MODELS / CARDS */
.model-title {
  font-size: 20px !important;
}

/* TITRES CONTENT BLOCK */
.content-block-title {
  font-size: 18px !important;
}

/* TITRES SPLIT SECTION */
.split-title {
  font-size: 24px !important;
}

/* TITRES EXEMPLES */
.example-text {
  font-size: 13px !important;
}

/* TITRES NAV LOGO (optionnel si trop gros) */
.nav-logo-letters {
  font-size: 24px !important;
}
#loader {
  position: fixed;
  inset: 0;
  background: var(--black);
  z-index: 99999;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  transition: opacity 0.6s ease, visibility 0.6s ease;
}

/* disparition */
#loader.hide {
  opacity: 0;
  visibility: hidden;
}

/* cadre central */
.loader-box {
  position: relative;
  text-align: center;
  padding: 40px 60px;
  border: 1px solid rgba(200,185,122,0.2);
  background: rgba(17,17,17,0.6);
  backdrop-filter: blur(10px);
}

/* titre */
.loader-title {
  font-family: 'Rajdhani', sans-serif;
  font-size: 28px;
  letter-spacing: 3px;
  color: var(--white);
  margin-bottom: 10px;
}

.loader-sub {
  font-size: 11px;
  letter-spacing: 2px;
  color: var(--mid);
  margin-bottom: 25px;
}

/* barre de chargement */
.loader-bar {
  width: 260px;
  height: 2px;
  background: rgba(255,255,255,0.08);
  position: relative;
  overflow: hidden;
}

.loader-progress {
  height: 100%;
  width: 0%;
  background: var(--accent);
  transition: width 0.2s ease;
}

/* pourcentage */
.loader-percent {
  margin-top: 15px;
  font-size: 11px;
  letter-spacing: 2px;
  color: var(--accent);
}

/* scan line style industriel */
.loader-scanline {
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  animation: scan 2s linear infinite;
}

@keyframes scan {
  from { left: -100%; }
  to { left: 100%; }
}

/* ===== FIX INTERSECTION CARRÉS SPLIT-ROW ===== */
.split-row {
  gap: 0 !important;
  border-bottom: 1px solid var(--border) !important;
}
.split-visual {
  border: none !important;
}
.split-text {
  border-right: 1px solid var(--border) !important;
}
.split-row.reverse .split-text {
  border-right: none !important;
  border-left: 1px solid var(--border) !important;
}
/* section-label dans split-section */
.split-section > .section-label {
  display: block;
  padding: 48px 60px 0;
}

/* ===== NOUVEAU HERO ACCUEIL (titre + vidéo) ===== */
.hero-new {
  position: relative;
  min-height: calc(100vh - 72px);
  background: var(--black);
  display: flex;
  flex-direction: column;
  align-items: center;
  overflow: hidden;
  padding-top: 72px;
}

.hero-new .hero-bg-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(200,185,122,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(200,185,122,0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
  z-index: 0;
}

.hero-new-title-wrap {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 60px 40px 48px;
  max-width: 900px;
  width: 100%;
}

.hero-new-title-wrap .hero-title {
  text-align: center;
  margin-bottom: 20px;
}

.hero-new-title-wrap .hero-desc {
  text-align: center;
  margin: 0 auto 32px;
  max-width: 580px;
}

.hero-new-title-wrap .hero-cta {
  margin: 0 auto;
}

/* Vidéo pleine largeur */
.hero-new-video-wrap {
  position: relative;
  width: 50%;
  height: 350px;
  min-height: unset;
  flex: none;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: 4px;
  z-index: 1;
  margin: 0 auto 60px;
}

.hero-new-video {
  width: 200%;
  height: 12000px;
  object-fit: cover;
  display: block;
  filter: brightness(0.85);
}

/* data points sur la vidéo */
.hero-new-video-wrap .hero-data-point {
  z-index: 3;
}

/* scan line sur la vidéo */
.hero-new-video-wrap .hero-scan-line {
  z-index: 3;
}

@media (max-width: 768px) {
  .hero-new-title-wrap {
    padding: 40px 24px 32px;
  }
  .hero-new-video-wrap {
    min-height: 260px;
  }
}
/* ═══════════════════════════════════════════
   COMPOSANTS PAGES DE SERVICE
═══════════════════════════════════════════ */

/* ───── HERO PAGES DE SERVICE ───── */
.hero-noise {
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='300' height='300'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='300' height='300' filter='url(%23n)' opacity='0.04'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 0;
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(200,185,122,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(200,185,122,0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
  z-index: 0;
}

.hero-glow {
  position: absolute;
  bottom: -200px;
  left: 50%;
  transform: translateX(-50%);
  width: 900px;
  height: 400px;
  background: radial-gradient(ellipse, rgba(200,169,110,0.12) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

.hero-content-service {
  position: relative;
  z-index: 1;
  max-width: 1000px;
  width: 100%;
}

.hero-breadcrumb {
  font-family: 'Inter', sans-serif;
  font-size: 10px;
  letter-spacing: 2px;
  color: var(--mid);
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 8px;
  position: absolute;
  top: 88px;
  left: 80px;
  margin-bottom: 0;
}

.hero-breadcrumb span { color: var(--accent); }

.hero-breadcrumb::before {
  content: '';
  display: inline-block;
  width: 24px;
  height: 1px;
  background: var(--accent);
}

.hero-title-service {
  font-family: 'Rajdhani', sans-serif;
  font-size: clamp(80px, 14vw, 300px);
  line-height: 0.9;
  letter-spacing: 2px;
  color: var(--white);
  margin-bottom: 32px;
}

.hero-title-service em { font-style: normal; color: var(--accent); }
.hero-title-service .outline {
  -webkit-text-stroke: 1px rgba(240,237,232,0.35);
  color: transparent;
}

.hero-desc-service {
  font-size: 16px;
  font-weight: 300;
  color: var(--mid);
  max-width: 520px;
  line-height: 1.7;
  margin: 0 auto;
}

.hero-scroll {
  position: absolute;
  bottom: 40px;
  right: 80px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  z-index: 1;
}
.hero-scroll span {
  font-size: 9px;
  letter-spacing: 3px;
  color: var(--mid);
  text-transform: uppercase;
  writing-mode: vertical-rl;
}
.hero-scroll-line {
  width: 1px;
  height: 60px;
  background: linear-gradient(to bottom, var(--accent), transparent);
  animation: scroll-line 1.8s ease-in-out infinite;
}
@keyframes scroll-line {
  0%   { transform: scaleY(0); transform-origin: top; opacity: 0; }
  50%  { transform: scaleY(1); transform-origin: top; opacity: 1; }
  51%  { transform: scaleY(1); transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; opacity: 0; }
}

/* ───── SECTION LABELS ───── */
.section-eyebrow {
  font-size: 10px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--accent);
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}
.section-eyebrow::after {
  content: '';
  flex: 1;
  max-width: 60px;
  height: 1px;
  background: var(--accent);
}

/* ───── WORKS / PROJETS ───── */
.works { padding: 120px 80px; }
.works-header { margin-bottom: 80px; max-width: 600px; }
.works-title {
  font-family: 'Rajdhani', sans-serif;
  font-size: clamp(40px, 5vw, 72px);
  line-height: 1;
  letter-spacing: 1px;
  color: var(--white);
}

.project-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 520px;
  border: 1px solid var(--border);
  margin-bottom: 2px;
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.project-card.reverse { direction: rtl; }
.project-card.reverse > * { direction: ltr; }
.project-card.visible { opacity: 1; transform: none; }
.project-card:hover { border-color: rgba(200,185,122,0.4); }

.project-info {
  padding: 60px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  background: var(--dark-2);
}
.project-num {
  font-family: 'Rajdhani', sans-serif;
  font-size: 80px;
  color: rgba(255,255,255,0.04);
  line-height: 1;
  margin-bottom: 24px;
}
.project-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 10px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--accent);
  border: 1px solid var(--border);
  padding: 5px 12px;
  margin-bottom: 20px;
  width: fit-content;
}
.project-title {
  font-family: 'Rajdhani', sans-serif;
  font-size: 36px;
  letter-spacing: 1px;
  color: var(--white);
  line-height: 1.1;
  margin-bottom: 20px;
}
.project-desc {
  font-size: 15px;
  color: var(--mid);
  line-height: 1.7;
  flex: 1;
  margin-bottom: 40px;
}
.project-specs {
  display: flex;
  flex-direction: column;
  gap: 12px;
  border-top: 1px solid var(--border);
  padding-top: 24px;
}
.project-spec { display: flex; justify-content: space-between; align-items: center; }
.project-spec-key {
  font-size: 10px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--mid);
}
.project-spec-val {
  font-size: 11px;
  color: var(--off-white);
}
.project-viewer { position: relative; background: var(--dark-3); overflow: hidden; }
.project-viewer model-viewer { width: 100%; height: 100%; }

/* Loader 3D */
.model-loader {
  position: absolute; inset: 0;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  background: var(--dark-3);
  z-index: 2; transition: opacity 0.5s ease; pointer-events: none;
}
.model-spinner {
  width: 40px; height: 40px;
  border: 2px solid rgba(255,255,255,0.08);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.9s linear infinite;
  margin-bottom: 16px;
}
@keyframes spin { to { transform: rotate(360deg); } }
.model-loader-text {
  font-size: 10px; letter-spacing: 2px;
  text-transform: uppercase; color: var(--mid); margin-bottom: 12px;
}
.model-progress-bar { width: 120px; height: 2px; background: rgba(255,255,255,0.08); }
.model-progress-fill { height: 100%; width: 0%; background: var(--accent); transition: width 0.2s ease; }
.viewer-hint {
  position: absolute; bottom: 16px; left: 50%; transform: translateX(-50%);
  font-size: 9px; letter-spacing: 2px; text-transform: uppercase;
  color: var(--mid); z-index: 3; white-space: nowrap; pointer-events: none;
}

/* ───── ABOUT / TARIFS ───── */
.about {
  padding: 120px 80px;
  background: var(--dark);
  border-top: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}

.about-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  margin-top: 60px;
}

.about-block {
  background: var(--dark-2);
  padding: 48px;
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.about-block.visible { opacity: 1; transform: none; }
.about-block-icon { font-size: 28px; margin-bottom: 20px; display: block; color: var(--accent); }
.about-block-title {
  font-family: 'Rajdhani', sans-serif;
  font-size: 22px; letter-spacing: 1px;
  color: var(--white); margin-bottom: 16px;
}
.about-block-text { font-size: 14px; color: var(--mid); line-height: 1.7; margin-bottom: 20px; }
.about-block-list { list-style: none; display: flex; flex-direction: column; gap: 8px; }
.about-block-list li {
  font-size: 12px; letter-spacing: 0.5px; color: var(--off-white);
  display: flex; align-items: center; gap: 10px;
}
.about-block-list li::before {
  content: ''; width: 16px; height: 1px;
  background: var(--accent); flex-shrink: 0;
}

/* ───── CTA ───── */
.cta-band {
  padding: 100px 80px;
  display: flex; align-items: center;
  justify-content: space-between; gap: 60px;
  border-top: 1px solid var(--border);
  position: relative; overflow: hidden;
}
.cta-band::before {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(ellipse 60% 100% at 0% 50%, rgba(200,185,122,0.06) 0%, transparent 70%);
  pointer-events: none;
}
.cta-text { position: relative; }
.cta-title {
  font-family: 'Rajdhani', sans-serif;
  font-size: clamp(32px, 4vw, 56px);
  color: var(--white); line-height: 1.05;
  letter-spacing: 1px; margin-bottom: 16px;
}
.cta-sub { font-size: 15px; color: var(--mid); max-width: 400px; }
.cta-btn {
  flex-shrink: 0; display: inline-flex;
  align-items: center; gap: 14px;
  padding: 18px 36px; background: var(--accent);
  color: var(--black); font-size: 12px;
  letter-spacing: 2px; text-transform: uppercase;
  text-decoration: none; border-radius: 2px;
  font-weight: 700;
  transition: background var(--transition), gap var(--transition);
}
.cta-btn:hover { background: var(--white); gap: 20px; }

/* ───── ANIMATIONS SCROLL ───── */
.anim-fade {
  opacity: 0; transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}
.anim-fade.visible { opacity: 1; transform: none; }

/* ───── RESPONSIVE PAGES ───── */
@media (max-width: 900px) {
  .works, .about, .cta-band { padding: 80px 32px; }
  .project-card { grid-template-columns: 1fr; }
  .project-card.reverse { direction: ltr; }
  .project-viewer { min-height: 320px; }
  .about-grid { grid-template-columns: 1fr !important; }
  .cta-band { flex-direction: column; align-items: flex-start; }
  .hero-scroll { display: none; }
  .hero-breadcrumb { left: 32px; top: 80px; }
}