/* Header / Navbar */
.site-header {
    background: linear-gradient(
        to bottom,
        rgba(10, 10, 10, 0.9),
        rgba(5, 5, 5, 0.95)
    );
    border-bottom: 2px solid var(--neon-cyan);
    box-shadow: 
        0 0 10px rgba(0, 255, 255, 0.3),
        inset 0 1px 0 rgba(0, 255, 255, 0.2);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 1rem;
    backdrop-filter: blur(10px);
}

.brand {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.brand-link {
    font-family: var(--font-primary);
    font-size: 1.8rem;
    background: linear-gradient(
        to right,
        var(--neon-cyan),
        var(--neon-pink)
    );
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-decoration: none;
}

.brand-glyph {
    font-size: 2rem;
    text-shadow: 0 0 10px var(--neon-cyan);
}

.brand-name {
    letter-spacing: 2px;
}

.brand-accent {
    color: var(--neon-pink);
    text-shadow: 0 0 5px var(--neon-pink);
}

.brand-tagline {
    font-family: var(--font-secondary);
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.7);
    font-style: italic;
    letter-spacing: 1px;
}

/* Navigation tabs */
.tab-bar {
    display: flex;
    gap: 0.5rem;
    margin-top: 1rem;
    flex-wrap: wrap;
}

.tab {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background: rgba(10, 10, 10, 0.6);
    border: 1px solid rgba(0, 255, 255, 0.2);
    border-radius: 8px;
    color: #ccc;
    font-weight: 500;
    font-size: 0.95rem;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.tab:hover {
    background: rgba(15, 15, 15, 0.8);
    border-color: var(--neon-cyan);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 0 15px rgba(0, 255, 255, 0.4);
}

.tab-icon {
    font-size: 1.2rem;
}

.tab.active {
    background: rgba(0, 30, 60, 0.7);
    border: 2px solid var(--neon-cyan);
    color: #fff;
    box-shadow: 0 0 20px var(--neon-cyan);
}

.tab.active::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(0, 255, 255, 0.2),
        transparent
    );
    animation: slide 2s infinite;
}

@keyframes slide {
    0% {
        left: -100%;
    }
    100% {
        left: 100%;
    }
}

/* Main content area */
main {
    max-width: 1400px;
    margin: 2rem auto;
    padding: 0 1.5rem;
}

.content {
    animation: fadeIn 1s ease-in-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Grid layouts */
.grid {
    display: grid;
    gap: 1.5rem;
    margin: 2rem 0;
}

/* Footer */
.site-footer {
    margin-top: 4rem;
    padding: 2rem 0;
    border-top: 2px solid var(--neon-cyan);
    text-align: center;
    color: #888;
    font-size: 0.9rem;
}

.footer-content {
    max-width: 800px;
    margin: 0 auto;
}

.footer-links {
    margin: 1.5rem 0;
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.footer-links a {
    margin: 0;
}

.footer-social {
    margin-top: 2rem;
}

.footer-social a {
    font-size: 1.5rem;
    margin: 0 1rem;
    color: #ccc;
    transition: all 0.3s ease;
}

.footer-social a:hover {
    color: var(--neon-cyan);
    transform: translateY(-3px);
    text-shadow: 0 0 10px var(--neon-cyan);
}