/* Base & Utilities */
html {
    scroll-behavior: smooth;
}

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

/* Navbar scroll state */
nav.scrolled {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    box-shadow: 0 1px 20px rgba(0, 0, 0, 0.06);
}

/* Mobile menu animation */
#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);
}

/* Mobile menu open state */
#mobile-menu.open {
    animation: slideDown 0.3s ease forwards;
}

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

/* Scroll reveal animations — progressive enhancement only */
@media (prefers-reduced-motion: no-preference) {
    .reveal {
        opacity: 0;
        transform: translateY(24px);
        transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1), transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
    }

    .reveal.visible {
        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; }
}

/* Floating card hover effect */
.floating-card {
    animation: float 6s ease-in-out infinite;
}

.floating-card:nth-child(2) {
    animation-delay: -2s;
}

.floating-card:nth-child(3) {
    animation-delay: -4s;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-8px); }
}

/* Subtle background pattern */
.bg-pattern {
    background-image: radial-gradient(circle at 1px 1px, rgba(13, 148, 136, 0.04) 1px, transparent 0);
    background-size: 24px 24px;
}