/* 自定义壁纸遮罩层 */
.custom-wallpaper-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: -1;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    pointer-events: none;
}

/* 壁纸设置面板 */
#wallpaper-btn {
    padding: 0.25rem 0.5rem;
}

.wallpaper-settings-panel {
    position: fixed;
    top: 60px;
    right: 16px;
    width: 280px;
    background: var(--bs-body-bg, #fff);
    border: 1px solid var(--bs-border-color, #e2e8f0);
    border-radius: 12px;
    box-shadow: 0 12px 32px rgba(0,0,0,0.15);
    z-index: 1100;
    opacity: 0;
    transform: translateY(-10px);
    visibility: hidden;
    transition: opacity 0.2s, transform 0.2s, visibility 0.2s;
}

.wallpaper-settings-panel.show {
    opacity: 1;
    transform: translateY(0);
    visibility: visible;
}

.wallpaper-settings-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    border-bottom: 1px solid var(--bs-border-color, #e2e8f0);
    font-weight: 600;
    font-size: 0.95rem;
}

.wallpaper-settings-close {
    background: none;
    border: none;
    color: var(--bs-secondary-color, #94a3b8);
    cursor: pointer;
    font-size: 1rem;
    padding: 4px;
    border-radius: 4px;
    transition: all 0.15s;
}

.wallpaper-settings-close:hover {
    color: #dc3545;
    background: rgba(220, 53, 69, 0.1);
}

.wallpaper-settings-body {
    padding: 16px;
}

[data-bs-theme="dark"] .wallpaper-settings-panel {
    background: #2d2d2d;
    border-color: #404040;
}

[data-bs-theme="dark"] .wallpaper-settings-header {
    border-color: #404040;
}