/* Base styles and custom animations */

html {
    scroll-behavior: smooth;
}

body {
    background-color: #040814;
}

/* Floating card animations */
@keyframes float1 {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-12px) rotate(0.5deg); }
}

@keyframes float2 {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-8px) rotate(-0.5deg); }
}

@keyframes float3 {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-15px) rotate(0.3deg); }
}

@keyframes float4 {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-6px) rotate(-0.3deg); }
}

.floating-card-1 { animation: float1 5s ease-in-out infinite; }
.floating-card-2 { animation: float2 4.5s ease-in-out infinite 0.5s; }
.floating-card-3 { animation: float3 5.5s ease-in-out infinite 0.3s; }
.floating-card-4 { animation: float4 4s ease-in-out infinite 0.7s; }

/* Scroll reveal - progressive enhancement, hidden by default */
@media (prefers-reduced-motion: no-preference) {
    .reveal {
        opacity: 0;
        transform: translateY(30px);
        transition: opacity 0.7s ease, transform 0.7s ease;
    }
    
    .reveal.revealed {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Navbar transition */
.nav-scrolled {
    background: rgba(4, 8, 20, 0.95) !important;
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(45, 212, 191, 0.1);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

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

::-webkit-scrollbar-track {
    background: #040814;
}

::-webkit-scrollbar-thumb {
    background: #1e2d4a;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #2dd4bf;
}

/* Selection color */
::selection {
    background: rgba(45, 212, 191, 0.3);
    color: #f1f5f9;
}

/* Mobile menu transitions */
#mobile-menu {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease;
}

#mobile-menu.open {
    max-height: 400px;
}

/* Image loading placeholder */
img {
    background: linear-gradient(135deg, #0f172a 0%, #1e2d4a 100%);
}