/* 全局样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: "Microsoft Yahei", Arial, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: #333;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* 头部样式 */
.site-header {
    text-align: center;
    margin-bottom: 40px;
    padding: 20px 0;
}

.site-header h1 {
    color: #fff;
    font-size: 2.5rem;
    text-shadow: 0 2px 10px rgba(0,0,0,0.2);
}

/* 主要内容区 */
.main-content {
    background: #fff;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    padding: 30px;
}

/* 卡密验证区域 */
.card-verify-box {
    max-width: 600px;
    margin: 0 auto;
}

.card-verify-box h2 {
    text-align: center;
    margin-bottom: 30px;
    color: #444;
    font-size: 1.8rem;
}

.verify-form {
    margin-bottom: 30px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #555;
}

.form-group input {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid #eee;
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s;
}

.form-group input:focus {
    outline: none;
    border-color: #667eea;
}

.btn {
    display: inline-block;
    padding: 12px 30px;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    text-align: center;
}

.btn-primary {
    background: #667eea;
    color: #fff;
    width: 100%;
}

.btn-primary:hover {
    background: #5a67d8;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
}

.alert {
    padding: 15px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-size: 0.95rem;
}

.alert-error {
    background: #fee2e2;
    color: #dc2626;
    border: 1px solid #fecdd3;
}

.alert-success {
    background: #dcfce7;
    color: #16a34a;
    border: 1px solid #bbf7d0;
}

.alert-warning {
    background: #fffbeb;
    color: #d97706;
    border: 1px solid #fed7aa;
}

.card-level-desc {
    margin-top: 30px;
    padding: 20px;
    background: #f8fafc;
    border-radius: 8px;
}

.card-level-desc h3 {
    margin-bottom: 15px;
    color: #444;
}

.card-level-desc ul {
    list-style: none;
}

.card-level-desc li {
    padding: 8px 0;
    border-bottom: 1px solid #eee;
}

.level-1 {
    color: #16a34a;
    font-weight: 600;
}

.level-2 {
    color: #3b82f6;
    font-weight: 600;
}

.level-3 {
    color: #d97706;
    font-weight: 600;
}

/* 资源复制区域 */
.resource-copy {
    max-width: 1000px;
    margin: 0 auto;
}

.card-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    background: #f8fafc;
    border-radius: 8px;
    margin-bottom: 30px;
    flex-wrap: wrap;
    gap: 15px;
}

.card-info p {
    font-size: 1rem;
}

.card-info p span {
    font-weight: 600;
}

.logout-btn {
    background: #ef4444;
    color: #fff;
    padding: 8px 20px;
}

.logout-btn:hover {
    background: #dc2626;
}

.content-list h2 {
    text-align: center;
    margin-bottom: 30px;
    color: #444;
}

.content-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

.content-item {
    padding: 20px;
    border: 1px solid #eee;
    border-radius: 8px;
    transition: box-shadow 0.3s;
}

.content-item:hover {
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.content-item h3 {
    margin-bottom: 15px;
    color: #444;
    font-size: 1.2rem;
}

.btn-copy {
    background: #3b82f6;
    color: #fff;
    padding: 10px 20px;
}

.btn-copy:hover {
    background: #2563eb;
}

.copy-result {
    margin-top: 15px;
    font-size: 0.9rem;
    height: 20px;
}

/* 底部样式 */
.site-footer {
    text-align: center;
    margin-top: 40px;
    color: #fff;
    padding: 20px 0;
}

/* 响应式适配 */
@media (max-width: 768px) {
    .container {
        padding: 10px;
    }
    
    .main-content {
        padding: 20px;
    }
    
    .card-info {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .content-grid {
        grid-template-columns: 1fr;
    }
}