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

html {
    scroll-behavior: smooth;
}

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

/* Scrollbar */
::-webkit-scrollbar {
    width: 6px;
}
::-webkit-scrollbar-track {
    background: #f1f5f9;
}
::-webkit-scrollbar-thumb {
    background: #94a3b8;
    border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
    background: #64748b;
}

/* Navigation */
.nav-logo-text,
.nav-logo-sub {
    transition: color 0.5s ease;
}

#navbar.scrolled .nav-logo-text,
#navbar.scrolled .nav-logo-sub {
    color: #0f766e;
}

.nav-link {
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background: #2dd4bf;
    transition: width 0.3s ease;
}

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

#navbar.scrolled .nav-link {
    color: #334155;
}

#navbar.scrolled .nav-link:hover {
    color: #0f766e;
}

/* Mobile Menu */
.mobile-link {
    opacity: 0;
    transform: translateY(10px);
    transition: opacity 0.4s ease, transform 0.4s ease;
}

#mobile-menu.open .mobile-link {
    opacity: 1;
    transform: translateY(0);
}

#mobile-menu.open .mobile-link:nth-child(1) { transition-delay: 0.1s; }
#mobile-menu.open .mobile-link:nth-child(2) { transition-delay: 0.15s; }
#mobile-menu.open .mobile-link:nth-child(3) { transition-delay: 0.2s; }
#mobile-menu.open .mobile-link:nth-child(4) { transition-delay: 0.25s; }

/* Hero Animations */
.hero-elem {
    opacity: 0;
    transform: translateY(30px);
    animation: heroFadeIn 0.8s ease forwards;
}

.hero-elem:nth-child(1) { animation-delay: 0.2s; }
.hero-elem:nth-child(2) { animation-delay: 0.4s; }
.hero-elem:nth-child(3) { animation-delay: 0.6s; }
.hero-elem:nth-child(4) { animation-delay: 0.8s; }

@keyframes heroFadeIn {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-img {
    animation: heroZoom 12s ease forwards;
}

@keyframes heroZoom {
    from { transform: scale(1.1); }
    to { transform: scale(1); }
}

.scroll-line {
    animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
    0%, 100% { opacity: 0.4; transform: scaleY(1); }
    50% { opacity: 1; transform: scaleY(1.2); }
}

/* Reveal Animations */
.reveal {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

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

.reveal[data-reveal].revealed {
    opacity: 1;
    transform: translateY(0);
}

/* Form */
input::placeholder,
textarea::placeholder {
    color: #475569;
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    .hero-elem,
    .hero-img,
    .scroll-line,
    .reveal[data-reveal],
    .group img {
        animation: none;
        transition: none;
        opacity: 1;
        transform: none;
    }
    
    html {
        scroll-behavior: auto;
    }
    
    .group img {
        transform: none;
    }
    
    .group:hover img {
        transform: none;
    }
}