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

    body {
        overflow-x: hidden;
    }

    ::selection {
        background: rgba(13, 148, 136, 0.3);
        color: #f0fdfa;
    }

    /* ── Floating Cards Animation ── */
    @keyframes float {
        0%, 100% { transform: translateY(0px); }
        50% { transform: translateY(-12px); }
    }

    @keyframes float-delayed {
        0%, 100% { transform: translateY(0px); }
        50% { transform: translateY(-8px); }
    }

    .animate-float {
        animation: float 4s ease-in-out infinite;
    }

    .animate-float-delayed {
        animation: float-delayed 5s ease-in-out infinite;
        animation-delay: 1s;
    }

    /* ── Service Card Hover ── */
    .service-card {
        transition: transform 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94),
                    box-shadow 0.4s ease;
    }

    .service-card:hover {
        transform: translateY(-6px);
        box-shadow: 0 20px 60px -20px rgba(13, 148, 136, 0.15);
    }

    /* ── Navbar Scroll State ── */
    #navbar.scrolled {
        background: rgba(11, 17, 32, 0.92);
        backdrop-filter: blur(20px);
        border-bottom: 1px solid rgba(148, 163, 184, 0.06);
        box-shadow: 0 4px 40px rgba(0, 0, 0, 0.3);
    }

    /* ── Scroll Reveal ── */
    .reveal {
        opacity: 0;
        transform: translateY(40px);
        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; }
    .reveal-delay-4 { transition-delay: 0.4s; }

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

    ::-webkit-scrollbar-track {
        background: #0b1120;
    }

    ::-webkit-scrollbar-thumb {
        background: #1e293b;
        border-radius: 4px;
    }

    ::-webkit-scrollbar-thumb:hover {
        background: #334155;
    }

    /* ── Mobile Menu Transition ── */
    #mobile-menu {
        animation: slideDown 0.3s ease-out;
    }

    @keyframes slideDown {
        from {
            opacity: 0;
            transform: translateY(-10px);
        }
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }

    /* ── Select Dropdown Fix ── */
    select option {
        background: #1e293b;
        color: #f1f5f9;
    }

    /* ── Reduced Motion ── */
    @media (prefers-reduced-motion: reduce) {
        .animate-float,
        .animate-float-delayed {
            animation: none;
        }

        .reveal {
            opacity: 1;
            transform: none;
        }

        html {
            scroll-behavior: auto;
        }
    }