/* Base styles & custom properties */
:root {
    --color-emerald-50: #ecfdf5;
    --color-emerald-100: #d1fae5;
    --color-emerald-200: #a7f3d0;
    --color-emerald-300: #6ee7b7;
    --color-emerald-400: #34d399;
    --color-emerald-500: #10b981;
    --color-emerald-600: #059669;
    --color-emerald-700: #047857;
    --color-emerald-800: #065f46;
    --color-emerald-900: #064e3b;
    --color-emerald-950: #022c22;
    --color-cream-50: #fefdf8;
    --color-cream-100: #fdf9ef;
}

html {
    scroll-behavior: smooth;
}

body {
    overflow-x: hidden;
}

/* Navbar scroll behavior */
#navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 50;
    background: transparent;
    transition: background 0.3s ease, box-shadow 0.3s ease, backdrop-filter 0.3s ease;
}

#navbar.nav-scrolled {
    background: rgba(254, 253, 248, 0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 1px 20px rgba(6, 95, 70, 0.08);
}

/* Mobile menu */
#mobile-menu {
    max-height: 0;
}

#mobile-menu.open {
    max-height: 400px;
}

.menu-line:last-child {
    width: 1.5rem;
}

/* Hamburger animation */
#menu-toggle[aria-expanded="true"] .menu-line:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
}
#menu-toggle[aria-expanded="true"] .menu-line:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}
#menu-toggle[aria-expanded="true"] .menu-line:nth-child(3) {
    width: 1.5rem;
    transform: translateY(-6px) rotate(-45deg);
}

/* Scroll reveal - progressive enhancement */
/* Default state: all elements visible (no JS required) */
.scroll-reveal {
    opacity: 1;
    transform: none;
    transition: opacity 0.6s ease, transform 0.6s ease;
}

/* When JS is enabled and prefers-reduced-motion allows, apply hidden initial state */
@media (prefers-reduced-motion: no-preference) {
    .js-enabled .scroll-reveal {
        opacity: 0;
        transform: translateY(24px);
    }
    .js-enabled .scroll-reveal.revealed {
        opacity: 1;
        transform: translateY(0);
    }
    .js-enabled .scroll-reveal.revealed-delay-1 {
        transition-delay: 0.1s;
    }
    .js-enabled .scroll-reveal.revealed-delay-2 {
        transition-delay: 0.2s;
    }
    .js-enabled .scroll-reveal.revealed-delay-3 {
        transition-delay: 0.3s;
    }
}

/* Smooth focus styles */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
    outline: 2px solid #059669;
    outline-offset: 2px;
    border-radius: 4px;
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: #fdf9ef;
}
::-webkit-scrollbar-thumb {
    background: #a7f3d0;
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: #34d399;
}

/* Selection color */
::selection {
    background: #a7f3d0;
    color: #064e3b;
}

/* Image aspect ratio utilities */
.aspect-card {
    aspect-ratio: 4 / 3;
}

/* Subtle pattern overlay for sections */
.pattern-bg {
    background-image: radial-gradient(circle at 1px 1px, rgba(6, 95, 70, 0.05) 1px, transparent 0);
    background-size: 24px 24px;
}