.theme-toggle {
    background: transparent;
    border: none;
    padding: 0;
    font: inherit;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
}

.theme-toggle.open {
    color: var(--text-primary);
    background: var(--hover-bg);
}

.theme-menu {
    position: fixed;
    z-index: 1200;
    min-width: 216px;
    padding: 8px;
    border-radius: 18px;
    background: var(--glass-bg-dark-strong);
    backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
    -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow), inset 0 1px 0 var(--glass-highlight);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transform: translateX(-8px) scale(0.98);
    transform-origin: left bottom;
    transition: opacity 0.22s ease, transform 0.22s cubic-bezier(0.34, 1.3, 0.64, 1), visibility 0.22s;
}

.theme-menu.open {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translateX(0) scale(1);
}

.theme-menu::before {
    content: '';
    position: absolute;
    top: 0;
    left: -16px;
    width: 16px;
    height: 100%;
}

.theme-menu-header {
    padding: 6px 12px 10px;
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--text-secondary);
}

.theme-menu-item {
    width: 100%;
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 9px 10px;
    border-radius: 12px;
    background: transparent;
    border: 1px solid transparent;
    color: var(--text-primary);
    font: inherit;
    text-align: left;
    cursor: pointer;
    transition: background 0.18s ease, border-color 0.18s ease;
}

.theme-menu-item:hover {
    background: var(--glass-bg);
    border-color: var(--glass-border);
}

.theme-menu-icon {
    width: 32px;
    height: 32px;
    flex-shrink: 0;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 15px;
    color: var(--text-primary);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    box-shadow: inset 0 1px 0 var(--glass-highlight);
}

.theme-menu-item.is-active .theme-menu-icon {
    color: #fff;
    background: linear-gradient(135deg, var(--glass-accent-strong), var(--glass-accent));
    border-color: var(--glass-accent-border);
    box-shadow: 0 4px 12px rgba(10, 132, 255, 0.32), inset 0 1px 0 rgba(255, 255, 255, 0.32);
}

.theme-menu-label {
    font-size: 0.92rem;
    font-weight: 500;
    flex: 1;
}

.theme-menu-hint {
    font-size: 0.72rem;
    color: var(--text-secondary);
    white-space: nowrap;
}

.theme-menu-check {
    font-size: 12px;
    color: var(--accent-blue);
    opacity: 0;
    flex-shrink: 0;
}

.theme-menu-item.is-active .theme-menu-check {
    opacity: 1;
}

@media (max-width: 768px) {
    .theme-menu {
        min-width: 0;
        width: calc(100vw - 32px);
        max-width: 320px;
        transform: translateY(8px) scale(0.98);
        transform-origin: bottom center;
    }

    .theme-menu.open {
        transform: translateY(0) scale(1);
    }

    .theme-menu::before {
        top: 100%;
        left: 0;
        width: 100%;
        height: 16px;
    }
}