* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f0f8f0; /* 浅绿底色 */
    margin: 0;
    padding: 0;
    overflow-x: hidden;
    font-size: 1.25rem; /* 原为默认，现整体提升 */
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 15px;
}

.intro-section {
    margin-bottom: 30px;
}

.intro-box {
    background: linear-gradient(135deg, #e8f5e8 0%, #d4edda 100%);
    border-radius: 15px;
    padding: 30px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.intro-box:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
}

.intro-box h1 {
    color: #2d5a2d;
    font-size: 3rem; /* 原2.5rem，提升 */
    font-weight: 700;
    margin-bottom: 20px;
    text-align: center;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.intro-box p {
    font-size: 1.3rem; /* 原1.1rem，提升 */
    color: #4a6741;
    margin-bottom: 15px;
    text-align: justify;
    line-height: 1.9;
}

.intro-box p:last-child {
    margin-bottom: 0;
}

/* MongoDB连接测试部分样式 */
.connection-section {
    margin-bottom: 30px;
}

.connection-box {
    background: linear-gradient(135deg, #e8f5e8 0%, #d4edda 100%);
    border-radius: 15px;
    padding: 30px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
}

.connection-box h2 {
    color: #2d5a2d;
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: 25px;
    text-align: center;
}

.connection-form {
    margin-bottom: 25px;
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: #4a6741;
    font-weight: 600;
    font-size: 1.1rem;
}

.form-group input {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid #c8e6c9;
    border-radius: 8px;
    font-size: 1rem;
    background: rgba(255, 255, 255, 0.9);
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.form-group input:focus {
    outline: none;
    border-color: #4caf50;
    box-shadow: 0 0 0 3px rgba(76, 175, 80, 0.1);
}

.btn-primary {
    background: linear-gradient(135deg, #4caf50 0%, #45a049 100%);
    color: white;
    border: none;
    padding: 12px 30px;
    border-radius: 8px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(76, 175, 80, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(76, 175, 80, 0.4);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-primary:disabled {
    background: #cccccc;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.connection-result {
    margin-top: 20px;
    padding: 20px;
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.8);
}

.connection-result.success {
    border-left: 4px solid #4caf50;
    background: rgba(76, 175, 80, 0.1);
}

.connection-result.error {
    border-left: 4px solid #f44336;
    background: rgba(244, 67, 54, 0.1);
}

#resultMessage {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 15px;
}

#databaseInfo h3 {
    color: #2d5a2d;
    margin-bottom: 15px;
    font-size: 1.3rem;
}

#dbDetails {
    background: rgba(255, 255, 255, 0.9);
    padding: 15px;
    border-radius: 8px;
    margin-bottom: 15px;
}

#collectionsList {
    background: rgba(255, 255, 255, 0.9);
    padding: 15px;
    border-radius: 8px;
}

.collection-item {
    display: inline-block;
    background: #e8f5e8;
    color: #2d5a2d;
    padding: 8px 15px;
    margin: 5px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .container {
        padding: 10px;
    }
    
    .intro-box {
        padding: 20px;
    }
    
    .intro-box h1 {
        font-size: 2.2rem; /* 原1.7rem，提升 */
    }
    
    .intro-box p {
        font-size: 1.1rem; /* 原0.95rem，提升 */
    }
}

@media (max-width: 480px) {
    .intro-box h1 {
        font-size: 1.5rem; /* 原1.2rem，提升 */
    }
    
    .intro-box p {
        font-size: 1rem; /* 原0.85rem，提升 */
    }
}

/* Footer 样式 */
.footer {
    width: 100vw;
    overflow: hidden;
    margin: 0;
    padding: 0;
    position: relative;
    left: 50%;
    right: 50%;
    margin-left: -50vw;
    margin-right: -50vw;
}

.footer-bg {
    width: 100%;
    height: auto;
    display: block;
    margin: 0;
    padding: 0;
}

/* 响应式Footer */
@media (max-width: 768px) {
    .footer {
        /* 保持自适应高度 */
    }
}

@media (max-width: 480px) {
    .footer {
        /* 保持自适应高度 */
    }
}