/* 统一设计系统 - 所有页面使用相同的布局和样式 */

/* 页面容器 */
.page-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    min-height: calc(100vh - 200px);
}

/* 面包屑导航 */
.breadcrumb {
    color: var(--text-inverse);
    margin-bottom: 20px;
    opacity: 0.9;
    font-size: 0.9rem;
}

.breadcrumb a {
    color: var(--text-inverse);
    text-decoration: none;
    transition: var(--transition);
}

.breadcrumb a:hover {
    text-decoration: underline;
    opacity: 0.8;
}

.breadcrumb > span {
    margin: 0 8px;
}

/* 页面头部 */
.page-header {
    background: var(--bg-overlay);
    backdrop-filter: blur(20px);
    border-radius: var(--border-radius-lg);
    padding: 40px;
    margin-bottom: 30px;
    color: var(--text-inverse);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.page-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, transparent 30%, rgba(255,255,255,0.1) 50%, transparent 70%);
    animation: shimmer 3s infinite;
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

.page-header h1 {
    font-size: 2.5rem;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
    font-weight: 700;
    position: relative;
    z-index: 1;
}

.page-header .page-icon {
    font-size: 2.8rem;
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.3));
}

.page-header p {
    font-size: 1.1rem;
    opacity: 0.9;
    line-height: 1.6;
    max-width: 600px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

/* 主要内容卡片 */
.content-card {
    background: var(--bg-card);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    padding: 40px;
    margin-bottom: 30px;
    position: relative;
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.content-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* 内容区域 */
.content-section {
    margin-bottom: 40px;
}

.content-section:last-child {
    margin-bottom: 0;
}

.section-title {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 12px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--primary-color);
}

.section-title .section-icon {
    font-size: 1.6rem;
    color: var(--primary-color);
}

.section-content {
    color: var(--text-secondary);
    line-height: 1.7;
    font-size: 1rem;
}

/* 子标题 */
.subsection-title {
    font-size: 1.4rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 25px 0 15px 0;
    display: flex;
    align-items: center;
    gap: 8px;
}

.subsection-title .subsection-icon {
    font-size: 1.2rem;
    color: var(--secondary-color);
}

/* 列表样式 */
.unified-list {
    list-style: none;
    padding: 0;
    margin: 20px 0;
}

.unified-list li {
    padding: 12px 0;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: flex-start;
    gap: 12px;
    transition: var(--transition);
}

.unified-list li:last-child {
    border-bottom: none;
}

.unified-list li:hover {
    background: var(--bg-overlay);
    margin: 0 -20px;
    padding: 12px 20px;
    border-radius: var(--border-radius-sm);
}

.unified-list .list-icon {
    color: var(--primary-color);
    font-size: 1.1rem;
    margin-top: 2px;
    flex-shrink: 0;
}

.unified-list .list-content {
    flex: 1;
}

.unified-list .list-title {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.unified-list .list-description {
    color: var(--text-muted);
    font-size: 0.9rem;
    line-height: 1.5;
}

/* 按钮样式 */
.unified-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: var(--border-radius);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.unified-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s;
}

.unified-btn:hover::before {
    left: 100%;
}

.unified-btn-primary {
    background: var(--primary-color);
    color: var(--text-inverse);
}

.unified-btn-primary:hover {
    background: var(--secondary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    color: var(--text-inverse);
    text-decoration: none;
}

.unified-btn-secondary {
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: 2px solid var(--border-color);
}

.unified-btn-secondary:hover {
    background: var(--primary-color);
    color: var(--text-inverse);
    border-color: var(--primary-color);
    text-decoration: none;
}

/* 网格布局 */
.unified-grid {
    display: grid;
    gap: 20px;
    margin: 20px 0;
}

.unified-grid-2 {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.unified-grid-3 {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.unified-grid-4 {
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

/* 卡片网格项 */
.grid-card {
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    padding: 25px;
    border: 1px solid var(--border-color);
    transition: var(--transition);
    text-align: center;
}

.grid-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-color);
}

.grid-card .card-icon {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 15px;
    display: block;
}

.grid-card .card-title {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 10px;
}

.grid-card .card-description {
    color: var(--text-muted);
    font-size: 0.9rem;
    line-height: 1.5;
}

/* 信息框 */
.info-box {
    padding: 20px;
    border-radius: var(--border-radius);
    margin: 20px 0;
    border-left: 4px solid;
    position: relative;
}

.info-box-info {
    background: rgba(66, 153, 225, 0.1);
    border-left-color: var(--info-color);
    color: var(--text-primary);
}

.info-box-success {
    background: rgba(72, 187, 120, 0.1);
    border-left-color: var(--success-color);
    color: var(--text-primary);
}

.info-box-warning {
    background: rgba(237, 137, 54, 0.1);
    border-left-color: var(--warning-color);
    color: var(--text-primary);
}

.info-box-error {
    background: rgba(245, 101, 101, 0.1);
    border-left-color: var(--error-color);
    color: var(--text-primary);
}

.info-box .info-icon {
    font-size: 1.2rem;
    margin-right: 8px;
    vertical-align: middle;
}

/* 占位符内容 */
.placeholder-content {
    text-align: center;
    padding: 80px 20px;
    color: var(--text-muted);
}

.placeholder-icon {
    font-size: 4rem;
    margin-bottom: 20px;
    opacity: 0.6;
    color: var(--text-muted);
}

.placeholder-title {
    font-size: 2rem;
    color: var(--text-primary);
    margin-bottom: 15px;
    font-weight: 600;
}

.placeholder-description {
    font-size: 1.1rem;
    line-height: 1.6;
    margin-bottom: 30px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    color: var(--text-secondary);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .page-container {
        padding: 15px;
    }
    
    .page-header {
        padding: 30px 20px;
    }
    
    .page-header h1 {
        font-size: 2rem;
        flex-direction: column;
        gap: 10px;
    }
    
    .content-card {
        padding: 25px 20px;
    }
    
    .section-title {
        font-size: 1.5rem;
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }
    
    .unified-grid-2,
    .unified-grid-3,
    .unified-grid-4 {
        grid-template-columns: 1fr;
    }
    
    .unified-btn {
        width: 100%;
        justify-content: center;
        margin-bottom: 10px;
    }
}

/* 动画效果 */
.fade-in {
    animation: fadeIn 0.6s ease-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.slide-in-left {
    animation: slideInLeft 0.6s ease-out;
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.slide-in-right {
    animation: slideInRight 0.6s ease-out;
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}