/* ===== Reset & Base ===== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --terra-400: #C86A45;
    --terra-500: #B8522E;
    --terra-200: #EBB8A0;
    --sand-50: #FDF9F3;
    --warm-850: #1A1614;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

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

img {
    display: block;
    max-width: 100%;
}

a {
    text-decoration: none;
    color: inherit;
}

/* ===== Animations ===== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(24px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes scrollLine {
    0% { transform: translateY(-100%); }
    100% { transform: translateY(100%); }
}

.animate-fade-in {
    animation: fadeIn 0.8s ease forwards;
    opacity: 0;
}

.animate-scroll-line {
    animation: scrollLine 1.5s ease-in-out infinite;
}

/* ===== Scroll Reveal (progressive enhancement) ===== */
@media (prefers-reduced-motion: no-preference) {
    .reveal-up {
        opacity: 0;
        transform: translateY(24px);
        transition: opacity 0.7s ease, transform 0.7s ease;
    }
    
    .reveal-up.revealed {
        opacity: 1;
        transform: translateY(0);
    }
    
    .reveal-left {
        opacity: 0;
        transform: translateX(-24px);
        transition: opacity 0.7s ease, transform 0.7s ease;
    }
    
    .reveal-left.revealed {
        opacity: 1;
        transform: translateX(0);
    }
    
    .reveal-right {
        opacity: 0;
        transform: translateX(24px);
        transition: opacity 0.7s ease, transform 0.7s ease;
    }
    
    .reveal-right.revealed {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Fallback: always visible if JS is disabled or prefers-reduced-motion */
@media not all and (prefers-reduced-motion: no-preference) {
    .reveal-up,
    .reveal-left,
    .reveal-right {
        opacity: 1;
        transform: none;
    }
}

/* ===== Navbar ===== */
#nav {
    background: rgba(253, 252, 250, 0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(26, 22, 20, 0.06);
}

#nav.scrolled {
    box-shadow: 0 1px 0 rgba(26, 22, 20, 0.06);
}

.nav-link {
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--terra-400);
    transition: width 0.3s ease;
}

.nav-link:hover::after {
    width: 100%;
}

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

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

/* ===== Menu Hover Effects ===== */
#menu section .group:hover p:first-child {
    position: relative;
}

/* ===== Subtle Selection Color ===== */
::selection {
    background: var(--terra-200);
    color: var(--warm-850);
}

/* ===== Custom Scrollbar ===== */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: var(--sand-50);
}

::-webkit-scrollbar-thumb {
    background: var(--terra-200);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--terra-400);
}