/* ==================== 浮动操作按钮区域 ==================== */
.floating-actions {
    position: fixed;
    bottom: 24px;
    right: 24px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    z-index: 999;
}

.floating-actions .fab-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 18px;
    background: var(--pico-card-background-color);
    color: var(--pico-contrast);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    transition: all 0.25s ease;
    padding: 0;
    margin: 0;
    flex-shrink: 0;
    outline: none;
}

.floating-actions .fab-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.floating-actions .fab-btn:active {
    transform: translateY(0);
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.08);
}

/* 返回顶部按钮默认隐藏 */
.floating-actions .fab-btn.fab-backtop {
    display: none !important;
}

.floating-actions .fab-btn.fab-backtop.is-visible {
    display: flex !important;
}

/* 深色模式适配 */
[data-theme="dark"] .floating-actions .fab-btn {
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

[data-theme="dark"] .floating-actions .fab-btn:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
}

/* 响应式 */
@media (max-width: 768px) {
    .floating-actions {
        bottom: 16px;
        right: 16px;
        gap: 6px;
    }

    .floating-actions .fab-btn {
        width: 38px;
        height: 38px;
        font-size: 16px;
    }
}