/* Base & Typography */
    html {
        scroll-behavior: smooth;
    }

    body {
        overflow-x: hidden;
    }

    /* Scroll Reveal Animations */
    .scroll-reveal {
        opacity: 1;
        transform: translateY(0);
        transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
    }

    @media (prefers-reduced-motion: no-preference) {
        .scroll-reveal {
            opacity: 0;
            transform: translateY(30px);
        }

        .scroll-reveal.revealed {
            opacity: 1;
            transform: translateY(0);
        }

        .scroll-reveal:nth-child(2) { transition-delay: 0.1s; }
        .scroll-reveal:nth-child(3) { transition-delay: 0.2s; }
        .scroll-reveal:nth-child(4) { transition-delay: 0.3s; }
        .scroll-reveal:nth-child(5) { transition-delay: 0.4s; }
        .scroll-reveal:nth-child(6) { transition-delay: 0.5s; }
    }

    /* Navbar transition */
    #navbar.scrolled {
        background: rgba(8, 14, 26, 0.95);
        backdrop-filter: blur(20px);
        box-shadow: 0 1px 0 rgba(255, 255, 255, 0.05);
    }

    /* Mobile menu transitions */
    #mobile-menu.open {
        opacity: 1;
        pointer-events: all;
    }

    #mobile-menu.closed {
        opacity: 0;
        pointer-events: none;
    }

    /* Hamburger animation */
    .menu-line {
        transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }

    .menu-toggle.active .menu-line:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }

    .menu-toggle.active .menu-line:nth-child(2) {
        opacity: 0;
        transform: scaleX(0);
    }

    .menu-toggle.active .menu-line:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }

    /* Mobile link animation */
    .mobile-link {
        opacity: 0;
        transform: translateY(20px);
        transition: opacity 0.4s ease, transform 0.4s ease, color 0.3s ease;
    }

    #mobile-menu.open .mobile-link {
        opacity: 1;
        transform: translateY(0);
    }

    #mobile-menu.open .mobile-link:nth-child(1) { transition-delay: 0.1s; }
    #mobile-menu.open .mobile-link:nth-child(2) { transition-delay: 0.15s; }
    #mobile-menu.open .mobile-link:nth-child(3) { transition-delay: 0.2s; }
    #mobile-menu.open .mobile-link:nth-child(4) { transition-delay: 0.25s; }
    #mobile-menu.open .mobile-link:nth-child(5) { transition-delay: 0.3s; }

    /* Selection color */
    ::selection {
        background: rgba(20, 184, 166, 0.3);
        color: #0f172a;
    }

    /* Custom scrollbar */
    ::-webkit-scrollbar {
        width: 8px;
    }

    ::-webkit-scrollbar-track {
        background: #0f172a;
    }

    ::-webkit-scrollbar-thumb {
        background: #14b8a6;
        border-radius: 4px;
    }

    ::-webkit-scrollbar-thumb:hover {
        background: #0d9488;
    }

    /* Focus visible */
    *:focus-visible {
        outline: 2px solid #14b8a6;
        outline-offset: 2px;
    }

    /* Image loading placeholder */
    img {
        background: linear-gradient(135deg, #f1f5f9 0%, #e2e8f0 100%);
    }