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

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Hero gradient */
.hero-gradient {
    background: linear-gradient(135deg, #0c4a6e 0%, #164e63 30%, #134e4a 60%, #0f766e 100%);
}

/* Floating blobs */
.hero-blob {
    width: 400px;
    height: 400px;
}

.hero-blob-1 {
    background: radial-gradient(circle, #5eead4 0%, transparent 70%);
    top: -100px;
    right: -100px;
}

.hero-blob-2 {
    background: radial-gradient(circle, #99f6e0 0%, transparent 70%);
    bottom: 10%;
    left: -50px;
    width: 300px;
    height: 300px;
}

.hero-blob-3 {
    background: radial-gradient(circle, #bce0ff 0%, transparent 70%);
    top: 40%;
    right: 10%;
    width: 200px;
    height: 200px;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) scale(1); }
    50% { transform: translateY(-30px) scale(1.05); }
}

.animate-float {
    animation: float 8s ease-in-out infinite;
}

/* Scroll reveal — progressive enhancement via JS */
.scroll-reveal {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.scroll-reveal.revealed {
    opacity: 1;
    transform: translateY(0);
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    .scroll-reveal {
        opacity: 1;
        transform: none;
        transition: none;
    }
    .animate-float {
        animation: none;
    }
    html {
        scroll-behavior: auto;
    }
}

/* Navbar scroll state */
nav.scrolled {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(12, 74, 110, 0.08);
    box-shadow: 0 1px 8px rgba(12, 74, 110, 0.06);
}

/* Mobile menu */
#mobile-menu {
    animation: slideDown 0.25s ease;
}

@keyframes slideDown {
    from { opacity: 0; transform: translateY(-8px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: #f0f7ff;
}
::-webkit-scrollbar-thumb {
    background: #8dcaff;
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: #59afff;
}