/* Base styles & custom properties */
:root {
    --color-cream-50: #FDFBF7;
    --color-cream-100: #FAF7F0;
    --color-emerald-500: #10B981;
    --color-emerald-600: #059669;
    --color-emerald-700: #047857;
    --color-emerald-800: #065F46;
    --color-emerald-900: #064E3B;
}

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

body {
    overflow-x: hidden;
}

/* Selection color */
::selection {
    background-color: rgba(5, 150, 105, 0.2);
    color: var(--color-emerald-900);
}

/* Scrollbar styling */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: var(--color-cream-100);
}
::-webkit-scrollbar-thumb {
    background: var(--color-emerald-300);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--color-emerald-500);
}

/* Navbar scroll state */
.nav-scrolled {
    background: rgba(253, 251, 247, 0.92) !important;
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    box-shadow: 0 1px 0 rgba(4, 120, 87, 0.08);
}

/* Reveal animations — progressive enhancement */
.reveal {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

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

@media (prefers-reduced-motion: no-preference) {
    .reveal {
        opacity: 0;
        transform: translateY(30px);
        transition: opacity 0.7s ease, transform 0.7s ease;
    }
    .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 transitions */
#mobile-menu {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.4s ease;
}
#mobile-menu.open {
    max-height: 400px;
    padding-top: 0;
}

/* Image lazy load placeholder */
img {
    background: linear-gradient(135deg, #e8f5e9 0%, #f5f0e3 100%);
}