/*
Panel 组件样式
一个灵活的面板系统，用于组织和展示内容
Styleguide 1.0
*/

/* 面板基础样式 */
.panel {
    background-color: var(--color-background);
    border: var(--border-width) solid var(--color-border);
    border-radius: var(--radius);
    margin-bottom: var(--spacing-4);
    transition: all 0.3s ease;
}

/* 面板头部 */
.panel-header {
    padding: var(--spacing-3) var(--spacing-4);
    border-bottom: var(--border-width) solid var(--color-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: var(--color-neutral-tint3);
}

.panel-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-text);
    margin: 0;
}

.panel-actions {
    display: flex;
    gap: var(--spacing-2);
}

/* 面板主体 */
.panel-body {
    padding: var(--spacing-4);
}

/* 面板底部 */
.panel-footer {
    padding: var(--spacing-3) var(--spacing-4);
    border-top: var(--border-width) solid var(--color-border);
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: var(--spacing-2);
    background-color: var(--color-neutral-tint3);
}

/* 面板变体 - 按类型 */

/* 主面板 */
.panel.-primary {
    border-color: var(--color-primary);
}

.panel.-primary .panel-header {
    background-color: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
}

.panel.-primary .panel-title {
    color: white;
}

/* 次要面板 */
.panel.-secondary {
    border-color: var(--color-secondary);
}

.panel.-secondary .panel-header {
    background-color: var(--color-secondary);
    color: white;
    border-color: var(--color-secondary);
}

.panel.-secondary .panel-title {
    color: white;
}

/* 信息面板 */
.panel.-info {
    border-color: var(--color-info);
}

.panel.-info .panel-header {
    background-color: var(--color-info);
    color: white;
    border-color: var(--color-info);
}

.panel.-info .panel-title {
    color: white;
}

/* 成功面板 */
.panel.-success {
    border-color: var(--color-success);
}

.panel.-success .panel-header {
    background-color: var(--color-success);
    color: white;
    border-color: var(--color-success);
}

.panel.-success .panel-title {
    color: white;
}

/* 警告面板 */
.panel.-warning {
    border-color: var(--color-warning);
}

.panel.-warning .panel-header {
    background-color: var(--color-warning);
    color: white;
    border-color: var(--color-warning);
}

.panel.-warning .panel-title {
    color: white;
}

/* 危险面板 */
.panel.-danger {
    border-color: var(--color-danger);
}

.panel.-danger .panel-header {
    background-color: var(--color-danger);
    color: white;
    border-color: var(--color-danger);
}

.panel.-danger .panel-title {
    color: white;
}

/* 面板变体 - 按样式 */

/* 无边框面板 */
.panel.-borderless {
    border: none;
}

.panel.-borderless .panel-header,
.panel.-borderless .panel-footer {
    border: none;
}

/* 无头部面板 */
.panel.-no-header .panel-header {
    display: none;
}

/* 无底部面板 */
.panel.-no-footer .panel-footer {
    display: none;
}

/* 紧凑面板 */
.panel.-compact .panel-header,
.panel.-compact .panel-footer {
    padding: var(--spacing-2) var(--spacing-3);
}

.panel.-compact .panel-body {
    padding: var(--spacing-3);
}

/* 大型面板 */
.panel.-large .panel-header,
.panel.-large .panel-footer {
    padding: var(--spacing-4) var(--spacing-5);
}

.panel.-large .panel-body {
    padding: var(--spacing-5);
}

/* 阴影面板 */
.panel.-shadow {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.panel.-shadow-lg {
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

/* 可折叠面板 */
.panel.-collapsible .panel-header {
    cursor: pointer;
}

.panel.-collapsible .panel-header::after {
    content: '▼';
    font-size: 0.75rem;
    transition: transform 0.3s ease;
    margin-left: var(--spacing-2);
}

.panel.-collapsed .panel-header::after {
    transform: rotate(-90deg);
}

.panel.-collapsed .panel-body,
.panel.-collapsed .panel-footer {
    display: none;
}

/* 面板组 */
.panel-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
}

/* 响应式设计 */

/* 小屏幕设备上的面板调整 */
@media (max-width: 480px) {
    .panel-header,
    .panel-footer {
        padding: var(--spacing-2) var(--spacing-3);
        flex-direction: column;
        gap: var(--spacing-2);
        text-align: center;
    }
    
    .panel-body {
        padding: var(--spacing-3);
    }
    
    .panel-title {
        font-size: 1rem;
    }
    
    .panel-actions {
        justify-content: center;
    }
    
    .panel-footer {
        justify-content: center;
    }
}

/* 中等屏幕设备上的面板调整 */
@media (max-width: 768px) {
    .panel-header,
    .panel-footer {
        flex-wrap: wrap;
    }
}

/* 面板加载状态 */
.panel.-loading .panel-body {
    position: relative;
    min-height: 150px;
    overflow: hidden;
}

.panel.-loading .panel-body::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
    background-size: 200% 100%;
    animation: panelLoading 1.5s infinite;
}

@keyframes panelLoading {
    0% {
        background-position: 200% 0;
    }
    100% {
        background-position: -200% 0;
    }
}

/* 面板滚动条样式 */
.panel-scrollable .panel-body {
    max-height: 400px;
    overflow-y: auto;
    scrollbar-width: thin;
    scrollbar-color: var(--color-muted) var(--color-neutral-tint3);
}

.panel-scrollable .panel-body::-webkit-scrollbar {
    width: 6px;
}

.panel-scrollable .panel-body::-webkit-scrollbar-track {
    background: var(--color-neutral-tint3);
    border-radius: 3px;
}

.panel-scrollable .panel-body::-webkit-scrollbar-thumb {
    background: var(--color-muted);
    border-radius: 3px;
}

.panel-scrollable .panel-body::-webkit-scrollbar-thumb:hover {
    background: var(--color-text);
}

/* 面板内网格布局 */
.panel-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-3);
}