/* --- HEADER STYLES --- */

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

*:focus {
    outline: none;
}

/* --- HEADER --- */
.header-nav {
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    width: 90%;
    max-width: 1200px;
    padding: 15px 0;
    z-index: 100;
    background-color: rgba(5, 5, 5, 0.8);
    backdrop-filter: blur(5px);
    border: 1px solid var(--border-color);
    border-radius: 30px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    transition: all 0.3s ease;
}

/* Header shrink effect for mobile */
.header-nav.header-shrink {
    top: 5px;
    width: 95%;
    padding: 8px 0;
    border-radius: 15px;
    backdrop-filter: blur(2px);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 2rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-mono);
    font-weight: 700;
    font-size: 1.2rem;
    text-decoration: none;
    color: var(--text-main);
    transition: all 0.3s ease;
}

/* Shrink logo on header shrink */
.header-nav.header-shrink .logo {
    gap: 8px;
    font-size: 1rem;
}

.logo-img {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    object-fit: cover;
    transition: all 0.3s ease;
}

/* Shrink logo image on header shrink */
.header-nav.header-shrink .logo-img {
    width: 30px;
    height: 30px;
}

.nav-links {
    display: flex;
    gap: 1.5rem;
    list-style: none;
    margin: 0;
    padding: 0;
    transition: all 0.3s ease;
}

/* Hide nav links on header shrink */
.header-nav.header-shrink .nav-links {
    gap: 0.5rem;
    opacity: 1;
}

.social-card {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin: 0;
    background: transparent;
    padding: 0;
    border-radius: 0;
    transition: all 0.3s ease;
}

/* Reduce social card gap on header shrink */
.header-nav.header-shrink .social-card {
    gap: 0.3rem;
}

/* Navigation link styles */
.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    transition: color var(--transition-speed);
    position: relative;
}

.nav-links a:hover {
    color: var(--accent-primary);
}

.nav-links a::after {
    content: "";
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-primary);
    transition: width var(--transition-speed);
}

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

/* --- RESPONSIVE DESIGN --- */
@media (max-width: 768px) {
    /* Adjust header height for mobile to prevent overlap */
    :root {
        --header-height: 180px; /* Increased to accommodate stacked mobile header */
    }

    /* Mobile header adjustments */
    .header-nav {
        top: 10px;
        width: 95%;
        border-radius: 20px;
        padding: 10px 0;
    }

    /* Mobile header shrink effect */
    .header-nav.header-shrink {
        top: 5px;
        padding: 5px 0;
        border-radius: 12px;
        backdrop-filter: blur(1px);
    }

    .header-content {
        flex-direction: column;
        gap: 1rem;
        padding: 0 15px;
    }

    /* Hide navigation links and social icons when header is shrunk on mobile */
    .header-nav.header-shrink .nav-links,
    .header-nav.header-shrink .social-card {
        display: none;
    }

    /* Center logo when header is shrunk */
    .header-nav.header-shrink .header-content {
        flex-direction: row;
        justify-content: center;
        padding: 0;
    }

    .nav-links {
        flex-wrap: wrap;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    /* Further adjustments for smaller screens */
    :root {
        --header-height: 200px; /* Even more space for very small screens */
    }
}