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

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

    body {
        overflow-x: hidden;
    }

    ::selection {
        background-color: rgba(160, 22, 54, 0.15);
        color: #71162e;
    }

    /* Custom scrollbar */
    ::-webkit-scrollbar {
        width: 8px;
    }
    ::-webkit-scrollbar-track {
        background: #fdf8f0;
    }
    ::-webkit-scrollbar-thumb {
        background: #fce7eb;
        border-radius: 4px;
    }
    ::-webkit-scrollbar-thumb:hover {
        background: #fad0d9;
    }

    /* Nav scroll state */
    .nav-scrolled {
        box-shadow: 0 1px 20px rgba(61, 7, 20, 0.08);
    }

    /* Mobile menu animation */
    #menu-btn[aria-expanded="true"] #bar1 {
        transform: translateY(5px) rotate(45deg);
    }
    #menu-btn[aria-expanded="true"] #bar2 {
        opacity: 0;
    }
    #menu-btn[aria-expanded="true"] #bar3 {
        transform: translateY(-5px) rotate(-45deg);
    }

    /* Scroll-triggered animations — progressive enhancement, only when JS runs and motion is preferred */
    @media (prefers-reduced-motion: no-preference) {
        .reveal {
            opacity: 0;
            transform: translateY(32px);
            transition: opacity 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94), transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        }
        .reveal.revealed {
            opacity: 1;
            transform: translateY(0);
        }
        .reveal-delay-1 { transition-delay: 0.1s; }
        .reveal-delay-2 { transition-delay: 0.2s; }
        .reveal-delay-3 { transition-delay: 0.3s; }
    }

    /* Back to top button */
    #back-to-top.visible {
        opacity: 1;
        visibility: visible;
    }

    /* Focus styles */
    a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
        outline: 2px solid #a01636;
        outline-offset: 2px;
    }