html { scroll-behavior: smooth; }
    body { font-family: system-ui, -apple-system, 'Segoe UI', sans-serif; }

    /* NAVBAR */
    #navbar { transition: background 0.3s, box-shadow 0.3s; }
    #navbar.scrolled {
      background: rgba(3,7,18,0.97) !important;
      box-shadow: 0 1px 30px rgba(0,0,0,0.5);
      backdrop-filter: blur(12px);
    }
    .nav-link { position: relative; color: #d1d5db; transition: color 0.2s; }
    .nav-link::after {
      content: ''; position: absolute; bottom: -4px; left: 0; right: 0;
      height: 2px; background: #FAA808;
      transform: scaleX(0); transition: transform 0.2s; border-radius: 2px;
    }
    .nav-link:hover { color: #fff; }
    .nav-link:hover::after, .nav-link.active::after { transform: scaleX(1); }
    .nav-link.active { color: #fbb830; }

    /* HERO */
    .hero-bg {
      background-image:
        linear-gradient(135deg, rgba(3,7,18,0.88) 0%, rgba(17,24,39,0.75) 50%, rgba(3,7,18,0.92) 100%),
        url('https://images.unsplash.com/photo-1581578731548-c64695cc6952?w=1920&q=80');
      background-size: cover;
      background-position: center;
      background-attachment: fixed;
    }

    /* BUTTONS */
    .btn-orange { background: linear-gradient(135deg, #FAA808, #e09200); transition: all 0.2s; }
    .btn-orange:hover {
      background: linear-gradient(135deg, #fbb830, #FAA808);
      box-shadow: 0 0 24px rgba(250,168,8,0.45);
      transform: translateY(-2px);
    }
    .btn-orange:active { transform: translateY(0); }

    /* SERVICE CARDS */
    .service-card {
      background: linear-gradient(160deg, #1f2937 0%, #111827 100%);
      border: 1px solid #374151;
      transition: border-color 0.25s, transform 0.25s, box-shadow 0.25s;
    }
    .service-card:hover { border-color: #FAA808; transform: translateY(-4px); box-shadow: 0 12px 32px rgba(250,168,8,0.12); }
    .service-card:hover .service-icon { background: #FAA808; color: #fff; }
    .service-icon { background: rgba(250,168,8,0.1); color: #FAA808; transition: background 0.25s, color 0.25s; }

    /* GALLERY */
    .gallery-item { overflow: hidden; cursor: zoom-in; }
    .gallery-item img { transition: transform 0.45s ease; width: 100%; height: 100%; object-fit: cover; }
    .gallery-item:hover img { transform: scale(1.08); }
    .gallery-overlay { background: linear-gradient(to top, rgba(0,0,0,0.8) 0%, transparent 60%); opacity: 0; transition: opacity 0.3s; }
    .gallery-item:hover .gallery-overlay { opacity: 1; }

    /* LIGHTBOX */
    #lightbox { display: none; position: fixed; inset: 0; background: rgba(0,0,0,0.93); z-index: 1000; align-items: center; justify-content: center; }
    #lightbox.open { display: flex; }
    #lightbox img { max-width: 92vw; max-height: 88vh; border-radius: 12px; }

    /* PRICING */
    .price-row:nth-child(odd) { background: rgba(255,255,255,0.03); }
    .price-row:hover { background: rgba(250,168,8,0.06); }

    /* REVEAL ANIMATION */
    .reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.6s ease, transform 0.6s ease; }
    .reveal.visible { opacity: 1; transform: translateY(0); }

    /* INPUTS */
    .inp { background: #111827; border: 1px solid #374151; color: #f9fafb; transition: border-color 0.2s, box-shadow 0.2s; }
    .inp:focus { outline: none; border-color: #FAA808; box-shadow: 0 0 0 3px rgba(250,168,8,0.15); }
    .inp::placeholder { color: #6b7280; }
    .inp-error { border-color: #ef4444 !important; box-shadow: 0 0 0 3px rgba(239,68,68,0.15) !important; }

    /* FLOATING BUTTONS */
    .fab { position: fixed; z-index: 50; border-radius: 50%; width: 52px; height: 52px; display: flex; align-items: center; justify-content: center; box-shadow: 0 4px 20px rgba(0,0,0,0.4); transition: transform 0.2s, box-shadow 0.2s; cursor: pointer; }
    .fab:hover { transform: scale(1.1); box-shadow: 0 6px 28px rgba(0,0,0,0.5); }

    /* MOBILE MENU */
    #mobile-menu { max-height: 0; overflow: hidden; transition: max-height 0.35s ease; }
    #mobile-menu.open { max-height: 400px; }

    /* SCROLLBAR */
    ::-webkit-scrollbar { width: 6px; }
    ::-webkit-scrollbar-track { background: #030712; }
    ::-webkit-scrollbar-thumb { background: #FAA808; border-radius: 3px; }