.theme-toggle {
    position: fixed;
    bottom: 20px;
    left: 20px;
    z-index: 1000;
    background: var(--backdrop-blur);
    backdrop-filter: blur(5px);
    border: 1px solid var(--button-border-color);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: var(--button-shadow);
}

.theme-toggle:hover {
    transform: scale(1.1);
    background: var(--button-hover);
    border-color: var(--button-border-color);
}

.theme-toggle svg {
    width: 20px;
    height: 20px;
    fill: var(--text-color);
    transition: transform 0.5s ease;
}

.theme-toggle:hover svg {
    transform: rotate(180deg);
}

/* Icon states */
.theme-toggle[data-theme="dark"] .moon-icon {
    display: none;
}

.theme-toggle[data-theme="light"] .sun-icon {
    display: none;
}

[data-theme="light"] .theme-toggle {
    background: var(--color-white);
    border-color: rgba(0, 0, 0, 0.3);
}

@media (max-width: 768px) {
    .theme-toggle {
        bottom: 15px;
        left: 15px;
        width: 35px;
        height: 35px;
    }

    .theme-toggle svg {
        width: 18px;
        height: 18px;
    }
}