/* 卡密管理页面专用样式 */
.card-admin-section {
    background: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 100%);
    padding: 40px 0;
    min-height: 100vh;
}

.card-admin-title {
    text-align: center;
    margin-bottom: 50px;
}

.card-admin-title .main {
    font-size: 48px;
    font-weight: bold;
    margin-bottom: 15px;
}

.card-admin-title .main .white {
    color: #fff;
}

.card-admin-title .main .highlight {
    color: #ff6b35;
}

.card-admin-title .sub {
    font-size: 18px;
    color: #aaa;
    font-weight: 300;
}

.card-admin-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 上传区域 */
.upload-section {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 15px;
    padding: 30px;
    margin-bottom: 40px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.upload-section h3 {
    color: #fff;
    font-size: 24px;
    margin-bottom: 25px;
    font-weight: bold;
}

.upload-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    color: #fff;
    font-size: 16px;
    font-weight: 500;
}

.form-group select,
.form-group textarea {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 8px;
    padding: 12px 15px;
    color: #fff;
    font-size: 14px;
    transition: all 0.3s ease;
}

.form-group select option {
    background: #2d2d2d;
    color: #fff;
    padding: 10px;
}

.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #ff6b35;
    background: rgba(255, 255, 255, 0.15);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
    font-family: 'Courier New', monospace;
}

.upload-btn {
    background: linear-gradient(45deg, #ff6b35, #f7931e);
    color: white;
    border: none;
    padding: 15px 30px;
    border-radius: 8px;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
    align-self: flex-start;
}

.upload-btn:hover {
    background: linear-gradient(45deg, #e55a2b, #e8841a);
    transform: translateY(-2px);
}

.upload-btn:disabled {
    background: #666;
    cursor: not-allowed;
    transform: none;
}

/* 统计区域 */
.stats-section {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 15px;
    padding: 30px;
    margin-bottom: 40px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.stats-section h3 {
    color: #fff;
    font-size: 24px;
    margin-bottom: 25px;
    font-weight: bold;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
}

.stat-item {
    background: rgba(255, 255, 255, 0.03);
    border-radius: 10px;
    padding: 20px;
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
}

.stat-item:hover {
    background: rgba(255, 255, 255, 0.08);
    transform: translateY(-5px);
}

.stat-label {
    color: #aaa;
    font-size: 14px;
    margin-bottom: 10px;
}

.stat-value {
    color: #ff6b35;
    font-size: 32px;
    font-weight: bold;
    margin-bottom: 5px;
}

.stat-desc {
    color: #ccc;
    font-size: 12px;
}

/* 卡密列表区域 */
.codes-section {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 15px;
    padding: 30px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.codes-section h3 {
    color: #fff;
    font-size: 24px;
    margin-bottom: 25px;
    font-weight: bold;
}

.filter-bar {
    display: flex;
    gap: 15px;
    margin-bottom: 25px;
    flex-wrap: wrap;
}

.filter-bar select {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 8px;
    padding: 10px 15px;
    color: #fff;
    font-size: 14px;
    min-width: 120px;
}

.filter-bar select option {
    background: #2d2d2d;
    color: #fff;
    padding: 10px;
}

.filter-bar select:focus {
    outline: none;
    border-color: #ff6b35;
}

.refresh-btn {
    background: linear-gradient(45deg, #4CAF50, #45a049);
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
}

.refresh-btn:hover {
    background: linear-gradient(45deg, #45a049, #3d8b40);
    transform: translateY(-2px);
}

.codes-list {
    max-height: 400px;
    overflow-y: auto;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    background: rgba(0, 0, 0, 0.2);
}

.code-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
}

.code-item:hover {
    background: rgba(255, 255, 255, 0.05);
}

.code-item:last-child {
    border-bottom: none;
}

.code-info {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.code-value {
    color: #fff;
    font-family: 'Courier New', monospace;
    font-size: 16px;
    font-weight: bold;
}

.code-meta {
    display: flex;
    gap: 15px;
    font-size: 12px;
    color: #aaa;
}

.code-type {
    color: #ff6b35;
}

.code-status {
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 11px;
    font-weight: bold;
    text-transform: uppercase;
}

.status-unused {
    background: rgba(76, 175, 80, 0.2);
    color: #4CAF50;
}

.status-used {
    background: rgba(33, 150, 243, 0.2);
    color: #2196F3;
}

.status-expired {
    background: rgba(244, 67, 54, 0.2);
    color: #f44336;
}

.code-actions {
    display: flex;
    gap: 10px;
}

.action-btn {
    padding: 6px 12px;
    border: none;
    border-radius: 4px;
    font-size: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.copy-btn {
    background: rgba(255, 107, 53, 0.2);
    color: #ff6b35;
    border: 1px solid rgba(255, 107, 53, 0.3);
}

.copy-btn:hover {
    background: rgba(255, 107, 53, 0.3);
}

.delete-btn {
    background: rgba(244, 67, 54, 0.2);
    color: #f44336;
    border: 1px solid rgba(244, 67, 54, 0.3);
}

.delete-btn:hover {
    background: rgba(244, 67, 54, 0.3);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .card-admin-content {
        padding: 0 10px;
    }
    
    .upload-form {
        gap: 15px;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
    }
    
    .filter-bar {
        flex-direction: column;
        gap: 10px;
    }
    
    .filter-bar select {
        min-width: auto;
        width: 100%;
    }
    
    .code-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }
    
    .code-actions {
        width: 100%;
        justify-content: flex-end;
    }
}

/* 加载状态 */
.loading {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 40px;
    color: #aaa;
}

.loading::after {
    content: '';
    width: 20px;
    height: 20px;
    border: 2px solid #ff6b35;
    border-top: 2px solid transparent;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-left: 10px;
}

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

/* 空状态 */
.empty-state {
    text-align: center;
    padding: 40px;
    color: #aaa;
}

.empty-state h4 {
    color: #fff;
    margin-bottom: 10px;
}

.empty-state p {
    font-size: 14px;
}