/* ─── Base & Reset ─── */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body { margin: 0; -webkit-font-smoothing: antialiased; }

/* ─── Navbar ─── */
#navbar {
    background: transparent;
    transition: background 0.3s ease, box-shadow 0.3s ease, backdrop-filter 0.3s ease;
}
#navbar.scrolled {
    background: rgba(8, 22, 82, 0.85);
    backdrop-filter: blur(16px);
    box-shadow: 0 1px 0 rgba(255,255,255,0.05);
}

/* ─── Service Cards ─── */
.service-card {
    will-change: transform;
}

/* ─── Floating Animation for Hero Cards ─── */
@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}
@keyframes float-slow {
    0%, 100% { transform: translateY(0px) translateX(0px); }
    50% { transform: translateY(-6px) translateX(4px); }
}
.floating-card-1 { animation: float 4s ease-in-out infinite; }
.floating-card-2 { animation: float-slow 5s ease-in-out infinite; }
.floating-card-3 { animation: float 4.5s ease-in-out 1s infinite; }

/* ─── Scroll Reveal (progressive enhancement) ─── */
@media (prefers-reduced-motion: no-preference) {
    .reveal {
        opacity: 0;
        transform: translateY(24px);
        transition: opacity 0.6s ease, transform 0.6s ease;
    }
    .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; }
}

/* ─── Selection ─── */
::selection { background: rgba(255, 208, 68, 0.3); color: #fff; }

/* ─── Scrollbar ─── */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: #081652; }
::-webkit-scrollbar-thumb { background: #1e4aef; border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: #3d6aff; }

/* ─── Nav height helper ─── */
.nav-height { padding-top: 72px; }

/* ─── Select arrow for form ─── */
select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='rgba(255,208,68,0.6)' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 36px;
}