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

    html {
        scroll-behavior: smooth;
        scroll-padding-top: 80px;
    }

    body {
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
    }

    /* Navbar scroll state */
    #navbar.scrolled {
        background: rgba(26, 26, 26, 0.95);
        backdrop-filter: blur(20px);
        box-shadow: 0 1px 0 rgba(255, 255, 255, 0.05);
    }

    /* Hero animations — progressive enhancement with JS */
    .hero-content {
        opacity: 1;
        transform: translateY(0);
    }

    @media (prefers-reduced-motion: no-preference) {
        .hero-content {
            opacity: 0;
            transform: translateY(30px);
            transition: opacity 0.8s ease, transform 0.8s ease;
        }
        .hero-content.hero-visible {
            opacity: 1;
            transform: translateY(0);
        }
    }

    /* Scroll reveal — progressive enhancement */
    .section-header,
    .service-card,
    .process-card,
    .about-image-wrapper {
        opacity: 1;
        transform: none;
    }

    @media (prefers-reduced-motion: no-preference) {
        .section-header,
        .service-card,
        .process-card,
        .about-image-wrapper {
            opacity: 0;
            transform: translateY(40px);
            transition: opacity 0.7s ease, transform 0.7s ease;
        }
        .section-header.revealed,
        .service-card.revealed,
        .process-card.revealed,
        .about-image-wrapper.revealed {
            opacity: 1;
            transform: translateY(0);
        }
        .service-card:nth-child(1).revealed { transition-delay: 0.05s; }
        .service-card:nth-child(2).revealed { transition-delay: 0.1s; }
        .service-card:nth-child(3).revealed { transition-delay: 0.15s; }
        .service-card:nth-child(4).revealed { transition-delay: 0.2s; }
        .service-card:nth-child(5).revealed { transition-delay: 0.25s; }
        .service-card:nth-child(6).revealed { transition-delay: 0.3s; }
        .process-card:nth-child(1).revealed { transition-delay: 0.05s; }
        .process-card:nth-child(2).revealed { transition-delay: 0.15s; }
        .process-card:nth-child(3).revealed { transition-delay: 0.25s; }
        .process-card:nth-child(4).revealed { transition-delay: 0.35s; }
    }

    /* Scroll indicator */
    .scroll-indicator {
        animation: scrollPulse 2s ease-in-out infinite;
    }

    @keyframes scrollPulse {
        0%, 100% { opacity: 0.4; transform: translateY(0); }
        50% { opacity: 1; transform: translateY(8px); }
    }

    /* Mobile menu */
    #mobile-menu {
        animation: slideDown 0.3s ease;
    }

    @keyframes slideDown {
        from { opacity: 0; transform: translateY(-10px); }
        to { opacity: 1; transform: translateY(0); }
    }

    /* Button focus styles */
    a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible {
        outline: 2px solid #ff6b55;
        outline-offset: 2px;
    }

    /* Selection color */
    ::selection {
        background: rgba(255, 107, 85, 0.2);
        color: #1a1a1a;
    }