:root {
    --void: #eff0f3;
    --deep: #23133a;
    --navy: #23133a;
    --gold: #883CF0;
    --gold-light: #7b5cff;
    --gold-dim: #ae62c8ca;
    --cyan: #7b5cff;
    --cyan-dim: #ae62c8ca;
    --text: #f0f8ff;
    --text-muted: #d6d6d6;
    --border: #3a1c63;
  }

  * { margin: 0; padding: 0; box-sizing: border-box; }

  html { scroll-behavior: smooth; }

  .bert-it {
    background: #191127;
    position: relative;
    height: 100vh;
    overflow-x: hidden;
    cursor: none;
  }

  /* CUSTOM CURSOR */
  #cursor {
    position: fixed;
    width: 10px; height: 10px;
    background: var(--gold);
    border-radius: 50%;
    pointer-events: none;
    z-index: 2;
    transform: translate(-50%,-50%);
    transition: transform 0.1s, width 0.2s, height 0.2s, background 0.2s;
    mix-blend-mode: screen;
  }
  #cursor-ring {
    position: fixed;
    width: 36px; height: 36px;
    border: 1px solid var(--gold);
    border-radius: 50%;
    pointer-events: none;
    z-index: 2;
    transform: translate(-50%,-50%);
    transition: transform 0.15s ease-out, width 0.3s, height 0.3s, border-color 0.3s;
  }

  /* CANVAS */
  #neural-canvas {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    pointer-events: none;
    z-index: 0;
    opacity: 0.35;
  }

  /* NAV */
  .bert-it nav {
    position: sticky;
    top: 0; left: 0; right: 0;
    z-index: 1;
    padding: 24px 60px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: linear-gradient(to bottom, #180f26, transparent);
  }
  .nav-logo {
    
    font-size: 28px;
    font-weight: 600;
    
    color: var(--gold);
    text-decoration: none;
    position: relative;
  }
  .nav-logo::after {
    content: '.IT';
    font-size: 14px;
    color: var(--cyan);
    
    vertical-align: super;
    margin-left: 2px;
  }
  .nav-links {
    display: flex;
    gap: 40px;
    list-style: none;
  }
  .nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 11px;
    
    text-transform: uppercase;
    transition: color 0.3s;
    cursor: none;
  }
  .nav-links a:hover { color: var(--gold); }
  .nav-cta {
    padding: 10px 28px;
    border: 1px solid var(--gold);
    color: var(--gold);
    text-decoration: none;
    font-size: 11px;
    text-transform: uppercase;
    transition: all 0.3s;
    cursor: none;
    position: relative;
    overflow: hidden;
  }

  .nav-cta:hover { color: var(--void); background-color: #883CF0; }
  .nav-cta:hover::before { left: 0; }

  /* SECTIONS */
  .bert-it section { position: relative; }

  /* HERO */
  #hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 0 60px;
    padding-top: 100px;
    overflow: hidden;
  }
  .hero-eyebrow {
    font-size: 10px;
    
    text-transform: uppercase;
    color: var(--cyan);
    margin-bottom: 32px;
    opacity: 0;
    animation: fadeUp 1s ease 0.3s forwards;
    display: flex;
    align-items: center;
    gap: 16px;
  }
  .hero-eyebrow::before {
    content: '';
    width: 40px;
    height: 1px;
    background: var(--cyan);
  }
  .hero-headline {
    
    font-size: clamp(64px, 8vw, 130px);
    font-weight: 300;
    line-height: 0.9;
    color:#fff;
    margin-bottom: 12px;
    max-width: 900px;
  }
  .hero-headline span.gold {
    color: var(--gold);
    font-style: italic;
  }
  .hero-headline .line {
    display: block;
    overflow: hidden;
  }
  .hero-headline .line span {
    display: block;
    opacity: 0;
    transform: translateY(100%);
    animation: slideUp 1s cubic-bezier(0.16,1,0.3,1) forwards;
  }
  .hero-headline .line:nth-child(1) span { animation-delay: 0.5s; }
  .hero-headline .line:nth-child(2) span { animation-delay: 0.7s; }
  .hero-headline .line:nth-child(3) span { animation-delay: 0.9s; }

  .hero-sub {
    font-size: 13px;
    
    color: var(--text-muted);
    max-width: 400px;
    line-height: 1.8;
    margin-top: 40px;
    opacity: 0;
    animation: fadeUp 1s ease 1.2s forwards;
  }
  .hero-actions {
    display: flex;
    gap: 24px;
    margin-top: 56px;
    align-items: center;
    opacity: 0;
    animation: fadeUp 1s ease 1.4s forwards;
  }
  .btn-primary {
    background: var(--gold);
    color: var(--void);
    padding: 16px 40px;
    
    font-size: 11px;
    
    text-transform: uppercase;
    cursor: none;
    border: none;
    transition: all 0.3s;
    text-decoration: none;
    display: inline-block;
  }
  .btn-primary:hover {
    background: var(--gold-light);
    transform: translateY(-2px);
    box-shadow: 0 20px 60px rgba(201,162,39,0.3);
  }
  .btn-ghost {
    color: var(--text-muted);
    font-size: 11px;
    
    text-transform: uppercase;
    cursor: none;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 12px;
    transition: color 0.3s;
  }
  .btn-ghost:hover { color: var(--text); }
  .btn-ghost::after {
    content: '→';
    transition: transform 0.3s;
  }
  .btn-ghost:hover::after { transform: translateX(4px); }

  .hero-metrics {
    position: absolute;
    right: 60px;
    bottom: 80px;
    display: flex;
    flex-direction: column;
    gap: 32px;
    opacity: 0;
    animation: fadeUp 1s ease 1.6s forwards;
  }
  .metric {
    text-align: right;
  }
  .metric-number {
    
    font-size: 48px;
    font-weight: 300;
    color: var(--gold);
    line-height: 1;
  }
  .metric-label {
    font-size: 9px;
    
    text-transform: uppercase;
    color: var(--text-muted);
    margin-top: 4px;
  }

  .scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 60px;
    display: flex;
    align-items: center;
    gap: 16px;
    font-size: 9px;
    
    text-transform: uppercase;
    color: var(--text-muted);
    opacity: 0;
    animation: fadeUp 1s ease 2s forwards;
  }
  .scroll-line {
    width: 40px;
    height: 1px;
    background: var(--text-muted);
    position: relative;
    overflow: hidden;
  }
  .scroll-line::after {
    content: '';
    position: absolute;
    top: 0; left: -100%;
    width: 100%; height: 100%;
    background: var(--gold);
    animation: scrollLine 2s linear infinite;
  }

  /* MARQUEE */
  .marquee-wrap {
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    padding: 18px 0;
    overflow: hidden;
    background: #1f1232;
  }
  .marquee-track {
    display: flex;
    gap: 60px;
    animation: marquee 25s linear infinite;
    width: max-content;
  }
  .marquee-item {
    font-size: 10px;
    
    text-transform: uppercase;
    color: var(--text-muted);
    white-space: nowrap;
    display: flex;
    align-items: center;
    gap: 60px;
  }
  .marquee-item::after {
    content: '◆';
    color: var(--gold);
    font-size: 8px;
  }

  /* SERVICES */
  #services {
    padding: 140px 60px;
  }
  .section-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-bottom: 80px;
    border-bottom: 1px solid var(--border);
    padding-bottom: 40px;
  }
  .section-tag {
    font-size: 10px;
    
    text-transform: uppercase;
    color: var(--gold);
    margin-bottom: 16px;
  }
  .section-title {
    color:#fff;
    font-size: clamp(40px, 4vw, 72px);
    font-weight: 300;
    line-height: 1;
  }
  .section-title em { font-style: italic; color: var(--gold); }
  .section-count {
    font-size: 11px;
    
    color: var(--text-muted);
  }

  .services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2px;
  }
  .service-card {
    background: var(--deep);
    padding: 48px 40px;
    cursor: none;
    transition: background 0.4s;
    position: relative;
    overflow: hidden;
    border: 1px solid #3a1c63;
  }
  .service-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 2px;
    background: #23133a;
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s cubic-bezier(0.16,1,0.3,1);
  }
  .service-card:hover { background: #1f1232; }
  .service-card:hover::before { transform: scaleX(1); }
  .service-icon {
    width: 48px;
    height: 48px;
    margin-bottom: 32px;
    opacity: 0.7;
  }
  .service-number {
    font-size: 11px;
    
    color: var(--text-muted);
    margin-bottom: 20px;
  }
  .service-name {
    color:#fff;
    font-size: 28px;
    font-weight: 400;
    margin-bottom: 16px;
    line-height: 1.2;
  }
  .service-desc {
    font-size: 12px;
    line-height: 1.9;
    color: var(--text-muted);
  }
  .service-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-top: 32px;
    font-size: 10px;
    
    text-transform: uppercase;
    color: var(--gold);
    text-decoration: none;
    cursor: none;
    transition: gap 0.3s;
  }
  .service-link:hover { gap: 14px; }

  /* ABOUT / SPLIT */
  #about {
    padding: 140px 60px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 120px;
    align-items: center;
    background: linear-gradient(135deg, var(--deep) 0%, #23133a9f 100%);
  }
  .about-visual {
    position: relative;
    height: 560px;
  }
  .about-box {
    position: absolute;
    background: #1f1232;
    border: 1px solid var(--border);
  }
  .about-box-1 {
    top: 0; left: 0;
    width: 75%; height: 75%;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
  }
  .about-box-2 {
    bottom: 0; right: 0;
    width: 55%; height: 40%;
    padding: 32px;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
  }
  .about-box-accent {
    position: absolute;
    bottom: 0; left: 0;
    width: 30%; height: 28%;
    background: var(--gold);
    display: flex;
    align-items: center;
    justify-content: center;
  }
  .about-big-text {
    font-size: 80px;
    font-weight: 300;
    color: #2a1647;
    line-height: 1;
    user-select: none;
    
  }
  .about-year {
    
    font-size: 36px;
    color: var(--void);
    font-weight: 600;
  }
  .about-stat-label {
    font-size: 9px;
    
    text-transform: uppercase;
    color: var(--void);
    opacity: 0.7;
    margin-top: 4px;
  }
  .about-content .section-tag { margin-bottom: 24px; }
  .about-title {
    color:#fff;
    font-size: clamp(36px, 3vw, 60px);
    font-weight: 300;
    line-height: 1.1;
    margin-bottom: 32px;
  }
  .about-title em { color: var(--gold); font-style: italic; }
  .about-body {
    font-size: 13px;
    line-height: 2;
    color: var(--text-muted);
    margin-bottom: 48px;
  }
  .about-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
  }
  .about-feature {
    padding: 20px 0;
    border-top: 1px solid var(--border);
  }
  .about-feature-title {
    font-size: 12px;
    
    color: var(--text);
    margin-bottom: 6px;
  }
  .about-feature-text {
    font-size: 11px;
    color: var(--text-muted);
    line-height: 1.7;
  }

  /* PROCESS */
  #process {
    padding: 140px 60px;
    background: #191127;
  }
  .process-timeline {
    margin-top: 80px;
    position: relative;
  }
  .process-line {
    position: absolute;
    top: 32px;
    left: 0; right: 0;
    height: 1px;
    background: var(--border);
  }
  .process-line-fill {
    height: 100%;
    background: var(--gold);
    width: 0%;
    transition: width 1.5s ease;
  }
  .process-steps {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 20px;
    position: relative;
  }
  .process-step {
    padding-top: 80px;
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
  }
  .process-step.visible {
    opacity: 1;
    transform: translateY(0);
  }
  .step-dot {
    position: absolute;
    top: 24px;
    width: 16px; height: 16px;
    border-radius: 50%;
    background: var(--void);
    border: 2px solid var(--border);
    transform: translateX(-8px);
    transition: border-color 0.3s, background 0.3s;
  }
  .process-step:hover .step-dot {
    border-color: var(--gold);
    background: var(--gold);
    box-shadow: 0 0 20px rgba(201,162,39,0.5);
  }
  .step-num {
    font-size: 10px;
    
    color: var(--gold);
    margin-bottom: 16px;
  }
  .step-name {
    color:#fff;
    font-size: 22px;
    margin-bottom: 12px;
    font-weight: 400;
  }
  .step-desc {
    font-size: 11px;
    color: var(--text-muted);
    line-height: 1.8;
  }

  /* CLIENTS */
  #clients {
    padding: 100px 60px;
    background: #23133a;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
  }
  .clients-header {
    text-align: center;
    font-size: 10px;
    
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 64px;
  }
  .clients-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 2px;
  }
  .client-item {
    padding: 40px 32px;
    border: 1px solid #5e309d;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: none;
    transition: background 0.3s, border-color 0.3s;
  }
  .client-item:hover {
    background: #1f1232;
    border-color: var(--border);
  }
  .client-name {
    
    font-size: 20px;
    font-weight: 300;
    color: var(--text-muted);
    
    text-transform: uppercase;
    transition: color 0.3s;
  }
  .client-item:hover .client-name { color: var(--gold); }

  /* CONTACT */
  #contact {
    padding: 140px 60px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 120px;
    background: #191127;
  }
  .contact-content .section-tag { margin-bottom: 24px; }
  .contact-title {
    color:#fff;
    font-size: clamp(36px, 3.5vw, 68px);
    font-weight: 300;
    line-height: 1.05;
    margin-bottom: 40px;
  }
  .contact-title em { color: var(--gold); font-style: italic; }
  .contact-info {
    display: flex;
    flex-direction: column;
    gap: 24px;
  }
  .contact-row {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px 0;
    border-bottom: 1px solid var(--border);
  }
  .contact-row-label {
    font-size: 9px;
    
    text-transform: uppercase;
    color: var(--text-muted);
    min-width: 80px;
  }
  .contact-row-value {
    font-size: 13px;
    color: var(--text);
  }
  .contact-form {
    display: flex;
    flex-direction: column;
    gap: 24px;
  }
  .form-group {
    position: relative;
  }
  .form-label {
    display: block;
    font-size: 9px;
    
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 10px;
  }
  .form-input, .form-textarea {
    width: 100%;
    background: var(--deep);
    border: 1px solid var(--border);
    color: var(--text);
    
    font-size: 13px;
    padding: 16px 20px;
    outline: none;
    transition: border-color 0.3s;
    cursor: none;
  }
  .form-input:focus, .form-textarea:focus {
    border-color: var(--gold);
  }
  .form-textarea {
    resize: none;
    height: 140px;
  }
  .form-submit {
    background: var(--gold);
    color: var(--void);
    border: none;
    padding: 18px 48px;
    
    font-size: 11px;
    
    text-transform: uppercase;
    cursor: none;
    transition: all 0.3s;
    align-self: flex-start;
  }
  .form-submit:hover {
    background: var(--gold-light);
    transform: translateY(-2px);
    box-shadow: 0 20px 60px #be52e50f;
  }

  /* FOOTER */
  .bert-it footer {
    padding: 60px;
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--deep);
  }
  .footer-logo {
    
    font-size: 24px;
    color: var(--gold);
    
  }
  .footer-copy {
    font-size: 11px;
    color: var(--text-muted);
    
  }
  .footer-links {
    display: flex;
    gap: 32px;
  }
  .footer-links a {
    font-size: 10px;
    
    text-transform: uppercase;
    color: var(--text-muted);
    text-decoration: none;
    cursor: none;
    transition: color 0.3s;
  }
  .footer-links a:hover { color: var(--gold); }

  /* MODAL / TOAST */
  .toast {
    position: fixed;
    bottom: 40px;
    right: 60px;
    background: var(--gold);
    color: var(--void);
    padding: 16px 32px;
    font-size: 11px;
    z-index: 1;
    transform: translateY(100px);
    opacity: 0;
    transition: all 0.4s cubic-bezier(0.16,1,0.3,1);
  }
  .toast.show { transform: translateY(0); opacity: 1; }

  /* ANIMATIONS */
  @keyframes fadeUp {
    to { opacity: 1; transform: translateY(0); }
  }
  @keyframes slideUp {
    to { opacity: 1; transform: translateY(0); }
  }
  @keyframes marquee {
    from { transform: translateX(0); }
    to { transform: translateX(-50%); }
  }
  @keyframes scrollLine {
    from { left: -100%; }
    to { left: 100%; }
  }
  @keyframes pulse {
    0%, 100% { opacity: 0.5; }
    50% { opacity: 1; }
  }

  /* SCROLL REVEAL */
  .reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s ease, transform 0.8s ease;
  }
  .reveal.visible {
    opacity: 1;
    transform: translateY(0);
  }

  /* ACTIVE NAV SECTION INDICATOR */
  .section-label {
    position: sticky;
    left: 24px;
    top: 50%;
    transform: translateY(-50%) rotate(-90deg);
    font-size: 9px;
    
    text-transform: uppercase;
    color: var(--text-muted);
    z-index: 1;
    transition: color 0.3s;
  }

  @media (max-width: 900px) {
    .bert-it nav { padding: 20px 24px; }
    .nav-links { display: none; }
    #hero, #services, #about, #process, #contact { padding-left: 24px; padding-right: 24px; }
    .services-grid { grid-template-columns: 1fr; }
    #about { grid-template-columns: 1fr; }
    .about-visual { display: none; }
    #contact { grid-template-columns: 1fr; }
    .clients-grid { grid-template-columns: repeat(2,1fr); }
    .process-steps { grid-template-columns: 1fr 1fr; }
    .hero-metrics { display: none; }
    .bert-it footer { flex-direction: column; gap: 24px; text-align: center; }
  }

::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: #873cf015; }
::-webkit-scrollbar-thumb { background: #873cf015; border-radius: 3px; }