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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 64px;
}

body {
    overflow-x: hidden;
}

/* Floating card animations */
.float-card-1 {
    animation: float1 6s ease-in-out infinite;
}

.float-card-2 {
    animation: float2 7s ease-in-out infinite;
    animation-delay: -2s;
}

.float-card-3 {
    animation: float3 5.5s ease-in-out infinite;
    animation-delay: -1s;
}

@keyframes float1 {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-12px) rotate(1deg); }
}

@keyframes float2 {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-16px) rotate(-1deg); }
}

@keyframes float3 {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-10px) rotate(0.5deg); }
}

/* Scroll reveal - progressive enhancement, only below fold */
.reveal {
    opacity: 1;
    transform: translateY(0);
    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);
}

@media (prefers-reduced-motion: no-preference) {
    .reveal {
        opacity: 0;
        transform: translateY(24px);
    }
    .reveal.revealed {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Mobile menu animation */
#menu-toggle.active #bar1 {
    transform: translateY(6px) rotate(45deg);
}
#menu-toggle.active #bar2 {
    opacity: 0;
}
#menu-toggle.active #bar3 {
    transform: translateY(-6px) rotate(-45deg);
}

/* Selection color */
::selection {
    background-color: #99f6e4;
    color: #134e4a;
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: #f0fdfa;
}
::-webkit-scrollbar-thumb {
    background: #99f6e4;
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: #5eead4;
}