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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    overflow-x: hidden;
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: #040B16;
}
::-webkit-scrollbar-thumb {
    background: #1B3A70;
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: #34D399;
}

/* Floating animations */
@keyframes float-slow {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-12px); }
}
@keyframes float-medium {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-8px); }
}
@keyframes float-fast {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-16px) rotate(2deg); }
}

.animate-float-slow {
    animation: float-slow 6s ease-in-out infinite;
}
.animate-float-medium {
    animation: float-medium 4.5s ease-in-out infinite;
}
.animate-float-fast {
    animation: float-fast 3.5s ease-in-out infinite;
}

/* Navbar scroll state */
.navbar-scrolled {
    background: rgba(4, 11, 22, 0.95) !important;
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(27, 58, 112, 0.3);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

/* Reveal animations */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}
.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; }

/* Mobile menu */
.mobile-menu-open .menu-line:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}
.mobile-menu-open .menu-line:nth-child(2) {
    opacity: 0;
}
.mobile-menu-open .menu-line:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
    width: 1.5rem;
}

/* Image hover effects */
img {
    will-change: transform;
}

/* Selection color */
::selection {
    background: rgba(52, 211, 153, 0.3);
    color: #fff;
}

/* Focus styles */
*:focus-visible {
    outline: 2px solid #34D399;
    outline-offset: 2px;
}

/* Smooth image loading */
img {
    transition: opacity 0.3s ease;
}
img[data-src] {
    opacity: 0;
}
img.loaded {
    opacity: 1;
}