.theme-toggle {
position: fixed;
top: 20px;
right: 20px;
cursor: pointer;
background: var(--container-bg);
border: 2px solid var(--text-color);
border-radius: 50%;
width: 44px;
height: 44px;
display: flex;
align-items: center;
justify-content: center;
transition: all 0.3s ease;
box-shadow: 0 2px 8px rgba(0,0,0,0.1);
z-index: 1000;
}

.theme-toggle:hover {
transform: scale(1.1);
box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.theme-toggle svg {
position: absolute;
width: 24px;
height: 24px;
transition: opacity 0.3s ease, transform 0.3s ease;
}

.theme-toggle .moon {
opacity: 0;
transform: rotate(-45deg);
}

[data-theme="dark"] .theme-toggle .sun {
opacity: 0;
transform: rotate(45deg);
}

[data-theme="dark"] .theme-toggle .moon {
opacity: 1;
transform: rotate(0);
}

.theme-toggle:hover .sun {
color: #ffd700;
}

[data-theme="dark"] .theme-toggle:hover .moon {
color: #7aa6ff;
}