:root {
    --bg-dark: #0B0B0C;
    --neon-green: #00E676;
    --snow-white: #FFFFFF;
    --mineral-gray: #37474F;
    --accent-gray: #1A1A1C;
}

body {
    background-color: var(--bg-dark);
    color: var(--snow-white);
    font-family: 'Inter', 'Noto Sans TC', sans-serif;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Space Grotesk', sans-serif;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.text-neon { color: var(--neon-green); }
.bg-neon { background-color: var(--neon-green); }
.border-neon { border: 1px solid var(--neon-green); }

/* Custom Navbar */
.navbar {
    background-color: rgba(11, 11, 12, 0.95);
    border-bottom: 1px solid var(--mineral-gray);
    padding: 1.5rem 0;
}

.navbar-brand {
    font-weight: 900;
    font-size: 1.5rem;
    color: var(--neon-green) !important;
}

.nav-link {
    color: var(--snow-white) !important;
    font-size: 0.9rem;
    text-transform: uppercase;
    margin: 0 1rem;
    transition: color 0.3s ease;
}

.nav-link:hover, .nav-link.active {
    color: var(--neon-green) !important;
}

/* Custom Button */
.btn-neon {
    background-color: transparent;
    border: 1px solid var(--neon-green);
    color: var(--neon-green);
    border-radius: 0;
    padding: 0.75rem 2rem;
    text-transform: uppercase;
    font-weight: bold;
    transition: all 0.3s ease;
}

.btn-neon:hover {
    background-color: var(--neon-green);
    color: var(--bg-dark);
}

/* Footer */
footer {
    border-top: 1px solid var(--mineral-gray);
    padding: 4rem 0 2rem;
    margin-top: 5rem;
}

.footer-logo {
    font-size: 2rem;
    font-weight: 900;
    color: var(--neon-green);
    margin-bottom: 1rem;
}

/* Cyberpunk grid background */
.cyber-grid {
    background-image: linear-gradient(var(--accent-gray) 1px, transparent 1px),
                      linear-gradient(90deg, var(--accent-gray) 1px, transparent 1px);
    background-size: 50px 50px;
}

/* Section titles */
.section-title {
    border-left: 5px solid var(--neon-green);
    padding-left: 1.5rem;
    margin-bottom: 3rem;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: var(--bg-dark);
}
::-webkit-scrollbar-thumb {
    background: var(--mineral-gray);
}
::-webkit-scrollbar-thumb:hover {
    background: var(--neon-green);
}