*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    overflow-x: hidden;
}

::selection {
    background: rgba(52, 212, 168, 0.3);
    color: #fff;
}

/* Animations */
@keyframes fadeUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-fade-up {
    animation: fadeUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

/* Scroll reveal */
.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.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Nav styles */
#nav.scrolled {
    background: rgba(10, 22, 40, 0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

#nav.scrolled .menu-line {
    background: rgba(255, 255, 255, 0.7);
}

/* Mobile menu */
.mobile-link {
    transition: opacity 0.3s, transform 0.3s;
}

#mobile-menu.open {
    opacity: 1;
    pointer-events: all;
}

#mobile-menu.open .mobile-link {
    opacity: 1;
    transform: translateY(0);
}

#mobile-menu .mobile-link:nth-child(1) { transition-delay: 0.1s; }
#mobile-menu .mobile-link:nth-child(2) { transition-delay: 0.15s; }
#mobile-menu .mobile-link:nth-child(3) { transition-delay: 0.2s; }
#mobile-menu .mobile-link:nth-child(4) { transition-delay: 0.25s; }
#mobile-menu .mobile-link:nth-child(5) { transition-delay: 0.3s; }

#mobile-menu:not(.open) .mobile-link {
    opacity: 0;
    transform: translateY(10px);
}

/* Hamburger animation */
.menu-line {
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.3s;
}

#menu-btn.active .menu-line:nth-child(1) {
    transform: translateY(4px) rotate(45deg);
}

#menu-btn.active .menu-line:nth-child(2) {
    opacity: 0;
}

#menu-btn.active .menu-line:nth-child(3) {
    transform: translateY(-4px) rotate(-45deg);
    width: 1.25rem;
}

/* Floating cards animation */
@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-8px); }
}

.floating-card-1 { animation: float 6s ease-in-out infinite; }
.floating-card-2 { animation: float 5s ease-in-out infinite 0.5s; }
.floating-card-3 { animation: float 7s ease-in-out infinite 1s; }
.floating-card-4 { animation: float 5.5s ease-in-out infinite 0.3s; }

/* Form styles */
select option {
    background: #132240;
    color: #fff;
}

/* Focus visible */
:focus-visible {
    outline: 1px solid rgba(52, 212, 168, 0.5);
    outline-offset: 2px;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    html {
        scroll-behavior: auto;
    }
    .reveal {
        opacity: 1;
        transform: none;
    }
}

/* Mobile adjustments */
@media (max-width: 767px) {
    .floating-card-1,
    .floating-card-2,
    .floating-card-3,
    .floating-card-4 {
        animation: none;
    }
}