/* ============================================
       Firefighters Burn Institute - Custom Styles
       ============================================ */

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

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

    body {
        overflow-x: hidden;
    }

    /* Selection */
    ::selection {
        background-color: rgba(20, 184, 166, 0.3);
        color: #042f2e;
    }

    /* Scrollbar */
    ::-webkit-scrollbar {
        width: 8px;
    }
    ::-webkit-scrollbar-track {
        background: #f1f5f9;
    }
    ::-webkit-scrollbar-thumb {
        background: #94a3b8;
        border-radius: 4px;
    }
    ::-webkit-scrollbar-thumb:hover {
        background: #64748b;
    }

    /* ============================================
       Hero Animations
       ============================================ */
    .hero-anim {
        opacity: 0;
        transform: translateY(30px);
        animation: heroFadeIn 0.8s ease forwards;
    }

    .hero-anim:nth-child(1) { animation-delay: 0.1s; }
    .hero-anim:nth-child(2) { animation-delay: 0.3s; }
    .hero-anim:nth-child(3) { animation-delay: 0.5s; }
    .hero-anim:nth-child(4) { animation-delay: 0.7s; }

    @keyframes heroFadeIn {
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }

    /* ============================================
       Scroll Reveal (Progressive Enhancement)
       ============================================ */
    @media (prefers-reduced-motion: no-preference) {
        .reveal-on-scroll {
            opacity: 0;
            transform: translateY(40px);
            transition: opacity 0.7s ease, transform 0.7s ease;
        }

        .reveal-on-scroll.is-visible {
            opacity: 1;
            transform: translateY(0);
        }

        /* Stagger children */
        .reveal-on-scroll .reveal-on-scroll {
            transition-delay: 0.1s;
        }
    }

    /* Always visible for reduced motion */
    @media (prefers-reduced-motion: reduce) {
        .reveal-on-scroll {
            opacity: 1;
            transform: none;
        }
        .hero-anim {
            opacity: 1;
            transform: none;
        }
    }

    /* ============================================
       Navigation
       ============================================ */
    #navbar {
        transition: background-color 0.4s ease, backdrop-filter 0.4s ease, box-shadow 0.4s ease;
    }

    #navbar.scrolled {
        background-color: rgba(2, 6, 23, 0.92);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
    }

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

    .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; }

    /* Menu toggle animation */
    #menu-toggle[aria-expanded="true"] .menu-bar:nth-child(1) {
        transform: translateY(2.5px) rotate(45deg);
    }
    #menu-toggle[aria-expanded="true"] .menu-bar:nth-child(2) {
        opacity: 0;
        transform: scaleX(0);
    }
    #menu-toggle[aria-expanded="true"] .menu-bar:nth-child(3) {
        transform: translateY(-2.5px) rotate(-45deg);
    }

    /* ============================================
       Focus Styles
       ============================================ */
    a:focus-visible,
    button:focus-visible,
    input:focus-visible,
    select:focus-visible,
    textarea:focus-visible {
        outline: 2px solid #14b8a6;
        outline-offset: 2px;
        border-radius: 4px;
    }

    /* ============================================
       Print Styles
       ============================================ */
    @media print {
        nav, #contact-form, .reveal-on-scroll { display: none; }
        body { color: #000; background: #fff; }
        a { color: #000; }
    }

    /* ============================================
       Utility: Subtle parallax on hero image
       ============================================ */
    #hero .absolute.inset-0 img {
        will-change: transform;
    }

    @media (prefers-reduced-motion: no-preference) {
        @keyframes subtleFloat {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-8px); }
        }
        .floating-slow {
            animation: subtleFloat 6s ease-in-out infinite;
        }
    }