/* ============================================
       Nutricion y Belleza Durham — Custom Styles
       ============================================ */

    /* Smooth scrolling */
    html {
        scroll-behavior: smooth;
    }

    /* Selection color */
    ::selection {
        background-color: rgba(94, 234, 212, 0.3);
        color: #0A1628;
    }

    /* Custom scrollbar */
    ::-webkit-scrollbar {
        width: 8px;
    }
    ::-webkit-scrollbar-track {
        background: #FAFAF8;
    }
    ::-webkit-scrollbar-thumb {
        background: #0A1628;
        border-radius: 4px;
    }
    ::-webkit-scrollbar-thumb:hover {
        background: #132240;
    }

    /* Header scroll state */
    #header.scrolled {
        background-color: rgba(250, 250, 248, 0.95);
        backdrop-filter: blur(12px);
        -webkit-backdrop-filter: blur(12px);
        box-shadow: 0 1px 0 rgba(10, 22, 40, 0.08);
    }

    /* Hero tagline animation */
    .hero-tag {
        animation: slideUp 0.8s ease forwards;
    }

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

    /* Reveal animations */
    .reveal {
        opacity: 0;
        transform: translateY(30px);
        transition: opacity 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94),
                    transform 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    }

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

    /* Staggered reveal delays */
    .reveal:nth-child(2) { transition-delay: 0.1s; }
    .reveal:nth-child(3) { transition-delay: 0.2s; }
    .reveal:nth-child(4) { transition-delay: 0.3s; }
    .reveal:nth-child(5) { transition-delay: 0.4s; }

    /* Mobile menu transitions */
    #mobileMenu {
        transition: opacity 0.3s ease, pointer-events 0.3s ease;
    }
    #mobileMenu.open {
        opacity: 1;
        pointer-events: all;
    }
    #mobileMenu.closed {
        opacity: 0;
        pointer-events: none;
    }

    .mobile-link {
        opacity: 0;
        transform: translateY(15px);
        transition: opacity 0.3s ease, transform 0.3s ease, color 0.2s ease;
    }
    .mobile-link.show {
        opacity: 1;
        transform: translateY(0);
    }

    /* Image hover parallax-like effect */
    .overflow-hidden {
        will-change: transform;
    }

    /* Subtle gradient overlay on cards */
    .group::after {
        content: '';
        position: absolute;
        inset: 0;
        border-radius: inherit;
        background: linear-gradient(to top, rgba(10, 22, 40, 0.03) 0%, transparent 40%);
        pointer-events: none;
        opacity: 0;
        transition: opacity 0.5s ease;
    }
    .group:hover::after {
        opacity: 1;
    }

    /* Focus visible for accessibility */
    a:focus-visible,
    button:focus-visible,
    input:focus-visible,
    textarea:focus-visible {
        outline: 2px solid #5EEAD4;
        outline-offset: 2px;
    }

    /* Reduced motion */
    @media (prefers-reduced-motion: reduce) {
        html {
            scroll-behavior: auto;
        }
        .reveal {
            opacity: 1;
            transform: none;
            transition: none;
        }
        .overflow-hidden img {
            transition: none;
        }
        .group:hover .overflow-hidden img {
            transform: none;
        }
    }

    /* Print styles */
    @media print {
        #header, #mobileMenu, button {
            display: none !important;
        }
        body {
            background: white;
            color: black;
        }
        section {
            page-break-inside: avoid;
        }
    }