/* Base styles & custom utilities */
:root {
    --emerald-50: #f0fdf4;
    --emerald-100: #dcfce7;
    --emerald-700: #16a34a;
    --emerald-800: #15803d;
    --emerald-900: #14532d;
    --emerald-950: #052e16;
    --cream-50: #fefdf8;
    --cream-100: #fdf9ef;
}

/* Smooth scroll offset for fixed nav */
section[id] {
    scroll-margin-top: 80px;
}

/* Selection color */
::selection {
    background: rgba(22, 101, 52, 0.2);
    color: var(--emerald-950);
}

/* Focus visible */
:focus-visible {
    outline: 2px solid var(--emerald-700);
    outline-offset: 2px;
}

/* Subtle pattern overlay for dark sections */
.bg-pattern-dark {
    background-image: radial-gradient(circle at 1px 1px, rgba(255,255,255,0.03) 1px, transparent 0);
    background-size: 24px 24px;
}

/* Image hover effects */
img {
    display: block;
}

/* Custom scrollbar for webkit */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: var(--cream-100);
}
::-webkit-scrollbar-thumb {
    background: var(--emerald-700);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--emerald-800);
}

/* Animation keyframes */
@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

@keyframes pulse-ring {
    0% { transform: scale(0.95); opacity: 0.7; }
    50% { transform: scale(1); opacity: 1; }
    100% { transform: scale(0.95); opacity: 0.7; }
}

/* Mobile menu animation */
#mobile-menu {
    animation: slideDown 0.3s ease-out;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Reduced motion preference */
@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;
    }
}