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

    html {
        scroll-behavior: smooth;
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
    }

    body {
        margin: 0;
        overflow-x: hidden;
    }

    /* ── Hero Animations ── */
    .hero-bg {
        will-change: transform;
    }

    .hero-bg::after {
        content: '';
        position: absolute;
        inset: 0;
        background: linear-gradient(
            180deg,
            rgba(15, 23, 42, 0.3) 0%,
            rgba(15, 23, 42, 0.1) 40%,
            rgba(15, 23, 42, 0.5) 100%
        );
    }

    /* ── Scroll Reveal ── */
    .reveal {
        opacity: 0;
        transform: translateY(30px);
        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:nth-child(2) { transition-delay: 0.1s; }
    .reveal:nth-child(3) { transition-delay: 0.2s; }
    .reveal:nth-child(4) { transition-delay: 0.3s; }

    /* ── Hero Content Animation ── */
    .hero-subtitle {
        animation: fadeUp 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94) 0.3s both;
    }

    .hero-headline {
        animation: fadeUp 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94) 0.5s both;
    }

    .hero-desc {
        animation: fadeUp 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94) 0.7s both;
    }

    .hero-cta {
        animation: fadeUp 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94) 0.9s both;
    }

    @keyframes fadeUp {
        from {
            opacity: 0;
            transform: translateY(24px);
        }
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }

    /* ── Navigation ── */
    #navbar.scrolled {
        background: rgba(15, 23, 42, 0.95);
        backdrop-filter: blur(12px);
        -webkit-backdrop-filter: blur(12px);
        box-shadow: 0 1px 0 rgba(255, 255, 255, 0.05);
    }

    #navbar.scrolled .nav-title {
        color: rgba(255, 255, 255, 0.95);
    }

    /* ── Room Cards ── */
    .room-card {
        transition: transform 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    }

    .room-card:hover {
        transform: translateY(-4px);
    }

    /* ── Amenity Items ── */
    .amenity-item {
        transition: background-color 0.2s ease;
    }

    .amenity-item:hover {
        background-color: rgba(204, 251, 241, 0.03);
    }

    /* ── Scroll Indicator ── */
    .scroll-indicator {
        animation: float 2.5s ease-in-out infinite;
    }

    @keyframes float {
        0%, 100% { transform: translateY(0); }
        50% { transform: translateY(6px); }
    }

    /* ── Parallax on Hero (subtle) ── */
    @media (prefers-reduced-motion: no-preference) {
        .hero-bg img {
            transition: transform 0.1s linear;
        }
    }

    /* ── Selection Color ── */
    ::selection {
        background-color: rgba(13, 148, 136, 0.2);
        color: inherit;
    }

    /* ── Focus Styles ── */
    a:focus-visible,
    button:focus-visible,
    input:focus-visible,
    textarea:focus-visible {
        outline: 2px solid #0d9488;
        outline-offset: 2px;
    }

    /* ── Mobile Menu Transitions ── */
    #mobile-menu {
        transition: transform 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    }

    /* ── Form Input Transitions ── */
    input, textarea {
        transition: border-color 0.3s ease, box-shadow 0.3s ease;
    }

    input:focus, textarea:focus {
        border-color: #0d9488 !important;
        box-shadow: 0 0 0 3px rgba(13, 148, 136, 0.1);
    }

    /* ── Button Hover Effects ── */
    button, a {
        transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    }

    /* ── Reduced Motion ── */
    @media (prefers-reduced-motion: reduce) {
        *, *::before, *::after {
            animation-duration: 0.01ms !important;
            animation-iteration-count: 1 !important;
            transition-duration: 0.01ms !important;
        }
        html {
            scroll-behavior: auto;
        }
        .reveal {
            opacity: 1;
            transform: none;
        }
    }

    /* ── Image Loading ── */
    img {
        background-color: #f1f5f9;
    }