.theme-switcher {
    position: fixed;
    top: 20px;
    right: 20px;
    display: flex;
    background: #fff;
    border-radius: 30px;
    padding: 5px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    z-index: 1000;
    border: 1px solid rgba(60,60,60,0.09);
    gap: 5px;
}

[data-theme="dark"] .theme-switcher {
    background: #233357;
    border-color: rgba(0,0,0,0.3);
}

@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) .theme-switcher {
        background: #233357;
        border-color: rgba(0,0,0,0.3);
    }
}

.theme-btn {
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    font-size: 24px;
}

.theme-btn:hover {
    background: rgba(128, 128, 128, 0.1);
}

.theme-btn.active {
    background: var(--blue-title);
    color: white;
}

[data-theme="dark"] .theme-btn.active {
    background: var(--yellow-header);
    color: black;
}

@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) .theme-btn.active {
        background: var(--yellow-header);
        color: black;
    }
}

.theme-btn::before {
    content: attr(data-icon);
}