/* 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: #fdf9ee;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    overflow-x: hidden;
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 6px;
}
::-webkit-scrollbar-track {
    background: var(--color-cream-50);
}
::-webkit-scrollbar-thumb {
    background: var(--color-emerald-200);
    border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--color-emerald-400);
}

/* Selection */
::selection {
    background: var(--color-emerald-200);
    color: var(--color-emerald-950);
}

/* Reveal animations — progressive enhancement via JS */
.reveal {
    opacity: 1;
    transform: none;
    transition: opacity 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94), transform 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.reveal[data-revealed="true"] {
    /* handled by JS */
}

@media (prefers-reduced-motion: no-preference) {
    .reveal {
        opacity: 0;
        transform: translateY(24px);
    }
    .reveal[data-revealed="true"] {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Navbar scroll state */
nav.scrolled {
    background: rgba(254, 253, 248, 0.92);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    box-shadow: 0 1px 0 rgba(6, 78, 59, 0.08);
}

nav.scrolled .menu-line {
    background: var(--color-emerald-800);
}

/* Mobile menu */
#mobile-menu.open {
    opacity: 1;
    pointer-events: all;
}

#mobile-menu.closed {
    opacity: 0;
    pointer-events: none;
}

/* FAQ */
.faq-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94), padding 0.4s ease;
}

.faq-content.open {
    max-height: 200px;
}

/* Subtle gradient border on cards */
.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; }
.reveal-delay-5 { transition-delay: 0.5s; }
.reveal-delay-6 { transition-delay: 0.6s; }

/* Print styles */
@media print {
    nav, #mobile-menu-btn, .reveal { display: block; opacity: 1; transform: none; }
    body { background: white; color: black; }
}