.theme-toggle {
    position: fixed;
    top: 1rem;
    right: 4rem;
    z-index: 40;
    padding: 0.5rem;
    border-radius: 0.5rem;
    background-color: transparent;
    border: none;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #4b5563;
}

.dark .theme-toggle {
    color: #9ca3af;
}

.theme-toggle:hover {
    transform: translateY(-1px);
    color: #2563eb;
}

.dark .theme-toggle:hover {
    color: #60a5fa;
}

.theme-toggle-icon {
    width: 1.5rem;
    height: 1.5rem;
}

@media (max-width: 640px) {
    .theme-toggle {
        top: 0.5rem;
        right: 3rem;
    }
    
    .theme-toggle-icon {
        width: 1.25rem;
        height: 1.25rem;
    }
}