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

    :root {
      --bg: #05070f;
      --bg2: #0b0f1e;
      --surface: #111626;
      --border: rgba(255,255,255,0.07);
      --accent: #00e5ff;
      --accent2: #ff3d6e;
      --gold: #f5c842;
      --text: #e8eaf6;
      --muted: #6b7280;
      --font-head: 'Orbitron', sans-serif;
      --font-mono: 'Share Tech Mono', monospace;
      --font-body: 'Exo 2', sans-serif;
    }

    html { scroll-behavior: smooth; }

    body {
      background: var(--bg);
      color: var(--text);
      font-family: var(--font-body);
      overflow-x: hidden;
      line-height: 1.6;
    }

    /* ── NOISE OVERLAY ── */
    body::before {
      content: '';
      position: fixed;
      inset: 0;
      background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.04'/%3E%3C/svg%3E");
      pointer-events: none;
      z-index: 9999;
      opacity: 0.4;
    }

    /* ── SCROLLBAR ── */
    ::-webkit-scrollbar { width: 4px; }
    ::-webkit-scrollbar-track { background: var(--bg); }
    ::-webkit-scrollbar-thumb { background: var(--accent); border-radius: 2px; }

    /* ── NAV ── */
    nav {
      position: fixed;
      top: 0; left: 0; right: 0;
      z-index: 100;
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 1.25rem 4%;
      backdrop-filter: blur(20px);
      -webkit-backdrop-filter: blur(20px);
      background: rgba(5,7,15,0.7);
      border-bottom: 1px solid var(--border);
      transition: all 0.3s;
    }

    .nav-logo {
      font-family: var(--font-head);
      font-size: 1.4rem;
      font-weight: 800;
      letter-spacing: -0.5px;
      color: #fff;
      text-decoration: none;
    }
    .nav-logo span { color: var(--accent); }

    .nav-links {
      display: flex;
      gap: 2.5rem;
      list-style: none;
    }
    .nav-links a {
      font-family: var(--font-mono);
      font-size: 0.78rem;
      color: var(--muted);
      text-decoration: none;
      letter-spacing: 0.08em;
      text-transform: uppercase;
      transition: color 0.2s;
    }
    .nav-links a:hover { color: var(--accent); }

    .nav-cta {
      padding: 0.55rem 1.4rem;
      background: transparent;
      border: 1px solid var(--accent);
      color: var(--accent);
      font-family: var(--font-mono);
      font-size: 0.75rem;
      letter-spacing: 0.1em;
      text-transform: uppercase;
      cursor: pointer;
      text-decoration: none;
      transition: all 0.2s;
    }
    .nav-cta:hover { background: var(--accent); color: var(--bg); }

    .burger { display: none; flex-direction: column; gap: 5px; cursor: pointer; }
    .burger span { width: 24px; height: 2px; background: var(--text); transition: all 0.3s; }

    /* ── HERO ── */
    #hero {
      min-height: 100vh;
      display: grid;
      grid-template-columns: 1fr 1fr;
      align-items: center;
      gap: 2rem;
      padding: 7rem 4% 4rem;
      position: relative;
      overflow: hidden;
    }

    .hero-bg-grid {
      position: absolute;
      inset: 0;
      background-image:
        linear-gradient(rgba(0,229,255,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0,229,255,0.03) 1px, transparent 1px);
      background-size: 60px 60px;
      mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 0%, transparent 100%);
    }

    .hero-glow {
      position: absolute;
      width: 600px; height: 600px;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(0,229,255,0.12) 0%, transparent 70%);
      top: -10%; right: -10%;
      pointer-events: none;
      animation: pulse 6s ease-in-out infinite;
    }
    .hero-glow2 {
      position: absolute;
      width: 400px; height: 400px;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(255,61,110,0.08) 0%, transparent 70%);
      bottom: 0; left: 20%;
      pointer-events: none;
      animation: pulse 8s ease-in-out infinite reverse;
    }

    @keyframes pulse {
      0%, 100% { transform: scale(1); opacity: 1; }
      50% { transform: scale(1.1); opacity: 0.7; }
    }

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

    .hero-tag {
      display: inline-flex;
      align-items: center;
      gap: 0.5rem;
      font-family: var(--font-mono);
      font-size: 0.72rem;
      letter-spacing: 0.15em;
      text-transform: uppercase;
      color: var(--accent);
      border: 1px solid rgba(0,229,255,0.3);
      padding: 0.35rem 0.85rem;
      margin-bottom: 1.8rem;
      animation: fadeUp 0.8s ease both;
    }
    .hero-tag::before {
      content: '';
      width: 6px; height: 6px;
      border-radius: 50%;
      background: var(--accent);
      animation: blink 1.5s ease infinite;
    }
    @keyframes blink { 0%,100%{opacity:1} 50%{opacity:0.2} }

    .hero-title {
      font-family: var(--font-head);
      font-size: clamp(2.2rem, 5vw, 4.5rem);
      font-weight: 900;
      line-height: 1.05;
      letter-spacing: 1px;
      margin-bottom: 1.5rem;
      animation: fadeUp 0.8s 0.1s ease both;
    }
    .hero-title .line2 { color: var(--accent); display: block; }
    .hero-title .line3 { color: var(--muted); font-weight: 400; font-size: 0.55em; display: block; letter-spacing: 0.05em; font-family: var(--font-mono); margin-top: 0.3em; }

    .hero-desc {
      font-size: 1.05rem;
      color: var(--muted);
      max-width: 480px;
      margin-bottom: 2.5rem;
      line-height: 1.8;
      animation: fadeUp 0.8s 0.2s ease both;
    }

    .hero-actions {
      display: flex;
      gap: 1rem;
      flex-wrap: wrap;
      animation: fadeUp 0.8s 0.3s ease both;
    }

    .btn-primary {
      padding: 0.85rem 2rem;
      background: var(--accent);
      color: var(--bg);
      font-family: var(--font-head);
      font-weight: 700;
      font-size: 0.9rem;
      text-decoration: none;
      letter-spacing: 0.03em;
      transition: all 0.25s;
      position: relative;
      overflow: hidden;
    }
    .btn-primary::after {
      content: '';
      position: absolute;
      inset: 0;
      background: rgba(255,255,255,0.2);
      transform: translateX(-100%);
      transition: transform 0.3s;
    }
    .btn-primary:hover::after { transform: translateX(0); }
    .btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 40px rgba(0,229,255,0.3); }

    .btn-ghost {
      padding: 0.85rem 2rem;
      background: transparent;
      color: var(--text);
      font-family: var(--font-head);
      font-weight: 600;
      font-size: 0.9rem;
      text-decoration: none;
      border: 1px solid var(--border);
      transition: all 0.25s;
    }
    .btn-ghost:hover { border-color: var(--text); transform: translateY(-2px); }

    /* hero visual */
    .hero-visual {
      position: relative;
      z-index: 2;
      display: flex;
      justify-content: center;
      align-items: center;
      animation: fadeUp 0.8s 0.4s ease both;
    }

    .code-window {
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: 2px;
      width: 100%;
      max-width: 480px;
      overflow: hidden;
      box-shadow: 0 40px 80px rgba(0,0,0,0.5), 0 0 0 1px rgba(0,229,255,0.1);
    }

    .code-bar {
      background: rgba(255,255,255,0.04);
      padding: 0.75rem 1rem;
      display: flex;
      align-items: center;
      gap: 0.5rem;
      border-bottom: 1px solid var(--border);
    }
    .code-dot { width: 10px; height: 10px; border-radius: 50%; }
    .code-dot:nth-child(1) { background: #ff5f57; }
    .code-dot:nth-child(2) { background: #ffbd2e; }
    .code-dot:nth-child(3) { background: #28ca41; }
    .code-filename { font-family: var(--font-mono); font-size: 0.72rem; color: var(--muted); margin-left: auto; }

    .code-body { padding: 1.5rem; font-family: var(--font-mono); font-size: 0.78rem; line-height: 2; }
    .code-body .ln { color: #3a4060; margin-right: 1.5rem; user-select: none; }
    .kw { color: #ff3d6e; }
    .fn { color: #00e5ff; }
    .str { color: #f5c842; }
    .cm { color: #3a4060; }
    .pn { color: #a5b4fc; }
    .nm { color: #fb923c; }

    /* ── STATS BAR ── */
    .stats-bar {
      padding: 2rem 4%;
      border-top: 1px solid var(--border);
      border-bottom: 1px solid var(--border);
      display: flex;
      justify-content: center;
      gap: 4rem;
      flex-wrap: wrap;
      background: var(--bg2);
    }
    .stat-item { text-align: center; }
    .stat-num {
      font-family: var(--font-head);
      font-size: 2.5rem;
      font-weight: 800;
      color: #fff;
      line-height: 1;
    }
    .stat-num span { color: var(--accent); }
    .stat-label { font-family: var(--font-mono); font-size: 0.7rem; color: var(--muted); text-transform: uppercase; letter-spacing: 0.12em; margin-top: 0.3rem; }

    /* ── SECTION SHARED ── */
    section { padding: 6rem 4%; }
    .section-label {
      font-family: var(--font-mono);
      font-size: 0.72rem;
      letter-spacing: 0.2em;
      text-transform: uppercase;
      color: var(--accent);
      margin-bottom: 0.75rem;
    }
    .section-title {
      font-family: var(--font-head);
      font-size: clamp(1.6rem, 3.5vw, 2.8rem);
      font-weight: 800;
      letter-spacing: 0.5px;
      line-height: 1.1;
      margin-bottom: 1rem;
    }
    .section-sub {
      color: var(--muted);
      font-size: 1rem;
      max-width: 520px;
      line-height: 1.8;
    }

    /* ── SERVICES ── */
    #servicos { background: var(--bg); }

    .services-header {
      display: flex;
      justify-content: space-between;
      align-items: flex-end;
      margin-bottom: 3.5rem;
      gap: 2rem;
      flex-wrap: wrap;
    }

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

    .service-card {
      background: var(--bg);
      padding: 2.5rem 2rem;
      position: relative;
      overflow: hidden;
      transition: background 0.3s;
    }
    .service-card::before {
      content: '';
      position: absolute;
      top: 0; left: 0;
      width: 3px; height: 0;
      background: var(--accent);
      transition: height 0.4s ease;
    }
    .service-card:hover::before { height: 100%; }
    .service-card:hover { background: var(--surface); }

    .service-icon {
      width: 48px; height: 48px;
      border: 1px solid var(--border);
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 1.5rem;
      font-size: 1.4rem;
      transition: border-color 0.3s;
    }
    .service-card:hover .service-icon { border-color: var(--accent); }

    .service-num {
      position: absolute;
      top: 1.5rem; right: 1.5rem;
      font-family: var(--font-mono);
      font-size: 0.65rem;
      color: var(--border);
      letter-spacing: 0.1em;
    }

    .service-title {
      font-family: var(--font-head);
      font-size: 1.2rem;
      font-weight: 700;
      margin-bottom: 0.75rem;
    }
    .service-desc { font-size: 0.9rem; color: var(--muted); line-height: 1.7; }

    .service-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 0.4rem;
      margin-top: 1.2rem;
    }
    .tag {
      font-family: var(--font-mono);
      font-size: 0.65rem;
      padding: 0.2rem 0.6rem;
      border: 1px solid var(--border);
      color: var(--muted);
      letter-spacing: 0.08em;
      transition: all 0.2s;
    }
    .service-card:hover .tag { border-color: rgba(0,229,255,0.3); color: var(--accent); }

    /* ── ABOUT / PROCESS ── */
    #sobre { background: var(--bg2); }

    .about-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 5rem;
      align-items: center;
    }

    .about-visual {
      position: relative;
    }
    .about-img-wrap {
      position: relative;
      aspect-ratio: 4/5;
      background: var(--surface);
      border: 1px solid var(--border);
      overflow: hidden;
    }
    .about-img-wrap::after {
      content: '';
      position: absolute;
      inset: 0;
      background: linear-gradient(135deg, rgba(0,229,255,0.08), transparent 60%);
    }

    .about-geo {
      position: absolute;
      width: 200px; height: 200px;
      border: 1px solid rgba(0,229,255,0.15);
      bottom: -30px; right: -30px;
      animation: rotateSlow 20s linear infinite;
    }
    .about-geo2 {
      position: absolute;
      width: 100px; height: 100px;
      border: 1px solid rgba(255,61,110,0.15);
      top: -20px; left: -20px;
      animation: rotateSlow 12s linear infinite reverse;
    }
    @keyframes rotateSlow { from{transform:rotate(0)} to{transform:rotate(360deg)} }

    .about-badge {
      position: absolute;
      bottom: 2rem; left: -2rem;
      background: var(--surface);
      border: 1px solid var(--border);
      padding: 1rem 1.5rem;
      z-index: 5;
    }
    .badge-num { font-family: var(--font-head); font-size: 2rem; font-weight: 800; color: var(--accent); }
    .badge-text { font-family: var(--font-mono); font-size: 0.65rem; color: var(--muted); text-transform: uppercase; letter-spacing: 0.12em; }

    /* inner visual decoration */
    .about-img-inner {
      width: 100%;
      height: 100%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 5rem;
      color: rgba(0,229,255,0.15);
      font-family: var(--font-head);
      font-weight: 800;
    }

    .about-content .section-sub { max-width: 100%; margin-bottom: 2rem; }

    .process-list { display: flex; flex-direction: column; gap: 1.2rem; }
    .process-item {
      display: flex;
      gap: 1.2rem;
      align-items: flex-start;
      padding: 1.2rem;
      border: 1px solid var(--border);
      background: var(--bg);
      transition: border-color 0.3s, background 0.3s;
    }
    .process-item:hover { border-color: rgba(0,229,255,0.3); background: var(--surface); }
    .process-step {
      font-family: var(--font-mono);
      font-size: 0.7rem;
      color: var(--accent);
      width: 32px;
      flex-shrink: 0;
      padding-top: 0.2rem;
    }
    .process-title { font-family: var(--font-head); font-weight: 700; font-size: 0.95rem; margin-bottom: 0.25rem; }
    .process-desc { font-size: 0.85rem; color: var(--muted); }

    /* ── PORTFOLIO ── */
    #portfolio { background: var(--bg); }

    .portfolio-header {
      display: flex;
      justify-content: space-between;
      align-items: flex-end;
      margin-bottom: 3rem;
      flex-wrap: wrap;
      gap: 1.5rem;
    }

    .projects-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 1.5rem;
    }

    .project-card {
      position: relative;
      background: var(--surface);
      border: 1px solid var(--border);
      overflow: hidden;
      group: true;
      transition: border-color 0.3s;
    }
    .project-card:hover { border-color: rgba(0,229,255,0.3); }
    .project-card.featured { grid-column: span 2; }

    .project-img {
      height: 260px;
      background: var(--bg);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 4rem;
      position: relative;
      overflow: hidden;
    }
    .project-card.featured .project-img { height: 340px; }

    .project-overlay {
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, transparent 40%, rgba(5,7,15,0.95) 100%);
    }

    .project-img-bg {
      position: absolute;
      inset: 0;
      opacity: 0.06;
      background-image:
        linear-gradient(rgba(0,229,255,0.5) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0,229,255,0.5) 1px, transparent 1px);
      background-size: 30px 30px;
      transition: opacity 0.3s;
    }
    .project-card:hover .project-img-bg { opacity: 0.12; }

    .project-emoji {
      font-size: 3.5rem;
      position: relative;
      z-index: 2;
      filter: drop-shadow(0 0 30px rgba(0,229,255,0.3));
    }

    .project-body { padding: 1.5rem; }
    .project-type {
      font-family: var(--font-mono);
      font-size: 0.65rem;
      letter-spacing: 0.15em;
      text-transform: uppercase;
      color: var(--accent);
      margin-bottom: 0.5rem;
    }
    .project-title { font-family: var(--font-head); font-size: 1.2rem; font-weight: 700; margin-bottom: 0.5rem; }
    .project-desc { font-size: 0.88rem; color: var(--muted); line-height: 1.7; }
    .project-stack { display: flex; gap: 0.4rem; flex-wrap: wrap; margin-top: 1rem; }

    /* ── TECH MARQUEE ── */
    .marquee-section {
      padding: 3rem 0;
      border-top: 1px solid var(--border);
      border-bottom: 1px solid var(--border);
      overflow: hidden;
      background: var(--bg2);
    }
    .marquee-track {
      display: flex;
      gap: 3rem;
      animation: marquee 20s linear infinite;
      width: max-content;
    }
    @keyframes marquee { from{transform:translateX(0)} to{transform:translateX(-50%)} }
    .marquee-item {
      font-family: var(--font-mono);
      font-size: 0.8rem;
      color: var(--muted);
      letter-spacing: 0.1em;
      text-transform: uppercase;
      white-space: nowrap;
      display: flex;
      align-items: center;
      gap: 0.75rem;
    }
    .marquee-item::after { content: '·'; color: var(--accent); }

    /* ── TESTIMONIALS ── */
    #depoimentos { background: var(--bg); }
    .testimonials-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; margin-top: 3rem; }
    .testimonial-card {
      background: var(--surface);
      border: 1px solid var(--border);
      padding: 2rem;
      position: relative;
      transition: border-color 0.3s, transform 0.3s;
    }
    .testimonial-card:hover { border-color: rgba(0,229,255,0.2); transform: translateY(-4px); }

    .testimonial-quote {
      font-size: 2.5rem;
      color: var(--accent);
      opacity: 0.4;
      font-family: Georgia, serif;
      line-height: 1;
      margin-bottom: 1rem;
    }
    .testimonial-text { font-size: 0.92rem; color: var(--muted); line-height: 1.8; margin-bottom: 1.5rem; }
    .testimonial-author { display: flex; align-items: center; gap: 0.75rem; }
    .author-avatar {
      width: 40px; height: 40px;
      border-radius: 50%;
      background: var(--bg);
      border: 1px solid var(--accent);
      display: flex; align-items: center; justify-content: center;
      font-size: 1rem;
    }
    .author-name { font-family: var(--font-head); font-weight: 700; font-size: 0.9rem; }
    .author-role { font-family: var(--font-mono); font-size: 0.65rem; color: var(--muted); }

    /* ── CONTACT ── */
    #contato {
      background: var(--bg2);
      position: relative;
      overflow: hidden;
    }
    #contato::before {
      content: '';
      position: absolute;
      top: -200px; right: -200px;
      width: 600px; height: 600px;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(0,229,255,0.05) 0%, transparent 70%);
      pointer-events: none;
    }

    .contact-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 5rem;
      align-items: start;
    }

    .contact-info .section-sub { margin-bottom: 2.5rem; }

    .contact-items { display: flex; flex-direction: column; gap: 1rem; }
    .contact-item {
      display: flex;
      align-items: center;
      gap: 1rem;
      padding: 1rem 1.2rem;
      border: 1px solid var(--border);
      background: var(--bg);
      transition: all 0.25s;
    }
    .contact-item:hover { border-color: rgba(0,229,255,0.3); background: var(--surface); }
    .contact-item-icon { font-size: 1.2rem; }
    .contact-item-label { font-family: var(--font-mono); font-size: 0.68rem; color: var(--muted); text-transform: uppercase; letter-spacing: 0.1em; }
    .contact-item-value { font-weight: 500; font-size: 0.95rem; }

    .contact-form { display: flex; flex-direction: column; gap: 1rem; }
    .form-group { display: flex; flex-direction: column; gap: 0.4rem; }
    .form-group label { font-family: var(--font-mono); font-size: 0.68rem; color: var(--muted); text-transform: uppercase; letter-spacing: 0.1em; }
    .form-group input,
    .form-group textarea,
    .form-group select {
      background: var(--bg);
      border: 1px solid var(--border);
      color: var(--text);
      padding: 0.85rem 1rem;
      font-family: var(--font-body);
      font-size: 0.9rem;
      outline: none;
      transition: border-color 0.2s;
      width: 100%;
    }
    .form-group input:focus,
    .form-group textarea:focus,
    .form-group select:focus { border-color: var(--accent); }
    .form-group textarea { resize: vertical; min-height: 130px; }
    .form-group select option { background: var(--bg); }
    .form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }

    .btn-submit {
      padding: 1rem 2rem;
      background: var(--accent);
      color: var(--bg);
      border: none;
      font-family: var(--font-head);
      font-weight: 700;
      font-size: 0.95rem;
      cursor: pointer;
      transition: all 0.25s;
      letter-spacing: 0.03em;
    }
    .btn-submit:hover { background: #00c8e0; transform: translateY(-2px); box-shadow: 0 12px 40px rgba(0,229,255,0.25); }

    /* ── FOOTER ── */
    footer {
      background: var(--bg);
      border-top: 1px solid var(--border);
      padding: 3rem 4% 2rem;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 3rem;
      margin-bottom: 3rem;
    }
    .footer-brand .nav-logo { display: inline-block; margin-bottom: 1rem; }
    .footer-brand p { font-size: 0.88rem; color: var(--muted); line-height: 1.7; max-width: 260px; }
    .footer-col h4 { font-family: var(--font-head); font-size: 0.9rem; font-weight: 700; margin-bottom: 1rem; }
    .footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 0.6rem; }
    .footer-col ul a { font-size: 0.88rem; color: var(--muted); text-decoration: none; transition: color 0.2s; }
    .footer-col ul a:hover { color: var(--accent); }
    .footer-bottom {
      display: flex;
      justify-content: space-between;
      align-items: center;
      border-top: 1px solid var(--border);
      padding-top: 1.5rem;
      flex-wrap: wrap;
      gap: 1rem;
    }
    .footer-copy { font-family: var(--font-mono); font-size: 0.72rem; color: var(--muted); }
    .footer-socials { display: flex; gap: 1rem; }
    .social-link {
      width: 36px; height: 36px;
      border: 1px solid var(--border);
      display: flex; align-items: center; justify-content: center;
      color: var(--muted);
      text-decoration: none;
      font-size: 0.85rem;
      transition: all 0.2s;
    }
    .social-link:hover { border-color: var(--accent); color: var(--accent); }

    /* ── SCROLL REVEAL ── */
    .reveal {
      opacity: 0;
      transform: translateY(30px);
      transition: opacity 0.7s ease, transform 0.7s ease;
    }
    .reveal.visible { opacity: 1; transform: translateY(0); }

    @keyframes fadeUp {
      from { opacity: 0; transform: translateY(20px); }
      to   { opacity: 1; transform: translateY(0); }
    }

    /* ── RESPONSIVE ── */
    @media (max-width: 1024px) {
      #hero { grid-template-columns: 1fr; padding-top: 8rem; }
      .hero-visual { display: none; }
      .services-grid { grid-template-columns: repeat(2, 1fr); }
      .about-grid { grid-template-columns: 1fr; }
      .about-visual { display: none; }
      .projects-grid { grid-template-columns: 1fr; }
      .project-card.featured { grid-column: span 1; }
      .testimonials-grid { grid-template-columns: 1fr; }
      .contact-grid { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr 1fr; }
    }

    @media (max-width: 768px) {
      .nav-links, .nav-cta { display: none; }
      .burger { display: flex; }
      .services-grid { grid-template-columns: 1fr; }
      .stats-bar { gap: 2rem; }
      .footer-grid { grid-template-columns: 1fr; }
      .form-row { grid-template-columns: 1fr; }
      section { padding: 4rem 4%; }
    }

    /* mobile menu */
    .mobile-menu {
      display: none;
      position: fixed;
      inset: 0;
      background: rgba(5,7,15,0.98);
      z-index: 99;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      gap: 2rem;
    }
    .mobile-menu.open { display: flex; }
    .mobile-menu a {
      font-family: var(--font-head);
      font-size: 2rem;
      font-weight: 700;
      color: var(--text);
      text-decoration: none;
      transition: color 0.2s;
    }
    .mobile-menu a:hover { color: var(--accent); }
    .mobile-close {
      position: absolute;
      top: 1.5rem; right: 4%;
      font-size: 1.5rem;
      cursor: pointer;
      color: var(--muted);
    }