/* Header Styles */
.site-header {
    background-color: var(--bg-surface);
    box-shadow: var(--shadow-sm);
    padding: var(--spacing-sm) 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

.site-header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: bold;
    font-size: 1.5rem;
    color: var(--color-orange);
    z-index: 102; 
}

.nav-menu {
    display: flex;
    gap: var(--spacing-md);
    list-style: none;
    align-items: center;
}

.nav-link {
    font-weight: 500;
    position: relative;
    padding: 5px 0;
    color: var(--text-primary); 
}

.nav-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: 0;
    left: 0;
    background-color: var(--color-green);
    transition: width 0.3s;
}

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

.nav-link.active {
    color: var(--color-orange);
}

.theme-toggle {
    background: none;
    border: 1px solid var(--border-color);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--text-primary);
    z-index: 102;
}

.header-actions {
    z-index: 102;
}


.site-footer {
    background-color: var(--bg-card);
    padding: 1rem 0;
    margin-top: auto; 
    border-top: 1px solid var(--border-color);
}


.developer-signature {
    margin-top: 0.5rem;
    font-size: 0.9rem;
    opacity: 0.8;
}

.heart-beat {
    color: #e25555;
    display: inline-block;
    animation: heartbeat 1.5s infinite;
}

@keyframes heartbeat {
    0% { transform: scale(1); }
    14% { transform: scale(1.3); }
    28% { transform: scale(1); }
    42% { transform: scale(1.3); }
    70% { transform: scale(1); }
}


.mobile-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    cursor: pointer;
    z-index: 102;
    padding: 10px;
}

@media (max-width: 768px) {
    .mobile-toggle {
        display: block;
        order: 1;
    }
    
    .header-actions {
        order: 2; 
    }
    
   
    .site-header .container {
        
    }

    .nav-menu {
        display: flex;
        flex-direction: column;
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100vh;
        background-color: var(--bg-surface);
        padding-top: 5rem;
        align-items: center;
        gap: 2rem;
        transform: translateX(-100%);
        transition: transform 0.3s ease-in-out;
        z-index: 101; 
    }

    .nav-menu.active {
        transform: translateX(0);
        box-shadow: 2px 0 10px rgba(0,0,0,0.1);
    }
    
    .nav-link {
        font-size: 1.25rem;
    }
}