/* Base styles and custom utilities */
html {
    scroll-behavior: smooth;
}

body {
    overflow-x: hidden;
}

/* Nav styles */
.nav-logo-text {
    color: #1e293b;
}

.nav-link {
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background: #14b8a6;
    transition: width 0.3s ease;
}

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

/* Dark nav state */
nav.dark .nav-logo-text {
    color: #f8fafc;
}

nav.dark .nav-link {
    color: #94a3b8;
}

nav.dark .nav-link:hover {
    color: #5eead4;
}

nav.dark .mobile-menu-line {
    background: #f8fafc;
}

nav.dark .border-slate-200 {
    border-color: #334155;
}

nav.dark .border-slate-200:hover {
    border-color: #14b8a6;
}

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

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

.mobile-nav-link {
    opacity: 1;
}

/* Mobile menu button animation */
#mobile-menu-btn.active .mobile-menu-line:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
}

#mobile-menu-btn.active .mobile-menu-line:nth-child(2) {
    opacity: 0;
}

#mobile-menu-btn.active .mobile-menu-line:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
    width: 1.5rem;
}

/* Scroll reveal base — content is VISIBLE by default */
.reveal-up,
.reveal-left,
.reveal-right {
    opacity: 1;
    transform: none;
}

/* Only apply animation when JS adds the class, and respect reduced motion */
@media (prefers-reduced-motion: no-preference) {
    .reveal-up {
        transition: opacity 0.7s ease, transform 0.7s ease;
    }
    
    .reveal-left {
        transition: opacity 0.7s ease, transform 0.7s ease;
    }
    
    .reveal-right {
        transition: opacity 0.7s ease, transform 0.7s ease;
    }
    
    /* Animated state — only applied via JS */
    .reveal-up.animated {
        opacity: 1;
        transform: translateY(0);
    }
    
    .reveal-left.animated {
        opacity: 1;
        transform: translateX(0);
    }
    
    .reveal-right.animated {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Initial states for animation (gated by JS via data attribute) */
[data-reveal] .reveal-up {
    opacity: 0;
    transform: translateY(30px);
}

[data-reveal] .reveal-left {
    opacity: 0;
    transform: translateX(-30px);
}

[data-reveal] .reveal-right {
    opacity: 0;
    transform: translateX(30px);
}

@media (prefers-reduced-motion: no-preference) {
    [data-reveal] .reveal-up {
        transition: opacity 0.7s ease, transform 0.7s ease;
    }
    
    [data-reveal] .reveal-left {
        transition: opacity 0.7s ease, transform 0.7s ease;
    }
    
    [data-reveal] .reveal-right {
        transition: opacity 0.7s ease, transform 0.7s ease;
    }
}

/* Menu item hover underline */
.group:hover h4::after {
    content: '';
    display: block;
    width: 100%;
    height: 1px;
    background: linear-gradient(to right, #14b8a6, transparent);
    margin-top: 2px;
}

/* Smooth image loading */
img {
    image-rendering: auto;
}

/* Selection color */
::selection {
    background: #ccfbf1;
    color: #134e4a;
}

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

::-webkit-scrollbar-track {
    background: #f8fafc;
}

::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: #94a3b8;
}