/* 基础样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Helvetica Neue', Arial, 'PingFang SC', 'Microsoft YaHei', sans-serif;
}

:root {
    --primary-color: #3498db;
    --secondary-color: #2c3e50;
    --border-radius: 8px;
    --box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
    --del-color : #ff0000;
    --text-color: #ffffff;
    
    font-size: clamp(0.875rem, 2vw, 1rem);
}

body {
    background: #f5f7fa;
    color: #333;
    line-height: 1.6;
    min-height: 100vh;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 clamp(0.75rem, 3vw, 1.25rem);
}

.header {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: clamp(0.5rem, 2vw, 0.9375rem);
    display: flex;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 10;
}

.back-btn {
    color: white;
    font-size: clamp(1.2rem, 3vw, 1.75rem);
    background: none;
    border: 0.2rem solid #ffffff;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: clamp(0.25rem, 0.75vw, 0.3125rem);
    padding: clamp( 0.3rem, 0.75vw, 0.3125rem);
    border-radius: 10%;
    transition: background-color 0.2s;
}

.back-btn:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

.header-title {
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 500;
    text-align: center;
    flex: 1;
    padding-right: clamp(2.5rem, 6vw, 3rem);
}

/* 主要内容区域 */
.main-content {
    padding-bottom: clamp(1.5rem, 4vw, 2.5rem);
}

/* 列表容器 */
.list-container {
    display: flex;
    flex-direction: column;
    gap: clamp(0.75rem, 2vw, 1.25rem);
}

/* 申请卡片 */
.application-card {
    margin-top: clamp(0.5rem, 1.5vw, 1rem);
    background-color: white;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    overflow: hidden;
    transition: var(--transition);
}

.application-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}

.card-header {
    padding: clamp(1rem, 3vw, 1.25rem);
    border-bottom: 1px solid #eee;
    background-color: var(--primary-color);
}

.business-details h3 {
    font-size: clamp(1rem, 2.5vw, 1.2rem);
    margin-bottom: clamp(0.25rem, 0.8vw, 0.3125rem);
    color: var(--text-color);
}

/* 卡片内容 */
.card-content {
    padding: clamp(1rem, 3vw, 1.25rem);
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(clamp(12.5rem, 30vw, 15.625rem), 1fr));
    gap: clamp(0.75rem, 2vw, 1.25rem);
}

.info-section {
    display: flex;
    flex-direction: column;
    gap: clamp(0.5rem, 1.5vw, 0.75rem);
}

.info-item {
    display: flex;
    gap: clamp(0.5rem, 1.5vw, 0.625rem);
}

.info-label {
    font-weight: 600;
    color: var(--secondary-color);
    min-width: clamp(3.75rem, 10vw, 5rem);
    font-size: clamp(0.875rem, 2vw, 1rem);
}

.info-value {
    color: #555;
    flex: 1;
    font-size: clamp(0.875rem, 2vw, 1rem);
}

/* 操作按钮 */
.card-actions {
    padding: clamp(1rem, 3vw, 1.25rem);
    border-top: 1px solid #eee;
    display: flex;
    gap: clamp(0.5rem, 1.5vw, 0.625rem);
    flex-wrap: wrap;
}

.action-btn {
    padding: clamp(0.5rem, 1.5vw, 0.625rem) clamp(0.75rem, 2vw, 1rem);
    border-radius: var(--border-radius);
    font-size: clamp(0.75rem, 1.8vw, 0.875rem);
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid transparent;
}

.btn-edit {
    background-color: white;
    color: var(--primary-color);
    border-color: var(--primary-color);
}

.btn-edit:hover {
    background-color: #e8f4fc;
}

.btn-del{
    border-color: var(--del-color);
    color: var(--del-color);
}

/* 空状态 */
.empty-state {
    text-align: center;
    padding: clamp(2.5rem, 8vw, 3.75rem) clamp(1rem, 3vw, 1.25rem);
    background-color: white;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
}

.empty-icon {
    font-size: clamp(2.5rem, 8vw, 4rem);
    margin-bottom: clamp(1rem, 3vw, 1.25rem);
    color: #ccc;
}

.empty-title {
    font-size: clamp(1.125rem, 3.5vw, 1.5rem);
    margin-bottom: clamp(0.5rem, 1.5vw, 0.625rem);
    color: var(--secondary-color);
}

.empty-description {
    color: #666;
    margin-bottom: clamp(1.5rem, 4vw, 1.875rem);
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
    font-size: clamp(0.875rem, 2vw, 1rem);
}

.new-application-btn {
    display: inline-block;
    background: var(--primary-color);
    color: white;
    padding: clamp(0.75rem, 2.5vw, 1rem) clamp(1.5rem, 4vw, 1.875rem);
    border-radius: var(--border-radius);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    font-size: clamp(0.875rem, 2vw, 1rem);
}

.new-application-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(52, 152, 219, 0.2);
}

/* 加载动画 */
.loading-spinner {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: clamp(1.5rem, 4vw, 2.5rem);
}

.spinner {
    width: clamp(2rem, 6vw, 2.5rem);
    height: clamp(2rem, 6vw, 2.5rem);
    border: clamp(0.25rem, 0.8vw, 0.375rem) solid #f3f3f3;
    border-top: clamp(0.25rem, 0.8vw, 0.375rem) solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* 响应式设计 */
@media (max-width: 768px) {
    .card-header {
        flex-direction: column;
        align-items: flex-start;
        gap: clamp(0.5rem, 2vw, 0.9375rem);
    }
    
    .card-content {
        grid-template-columns: 1fr;
    }
    
    .card-actions {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .card-actions {
        flex-direction: column;
    }
    
    .action-btn {
        width: 100%;
        justify-content: center;
    }
}