/* 基础重置和全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #1a2a6c, #2c3e50);
    color: #fff;
    line-height: 1.6;
    padding: 10px;
    min-height: 100vh;
    -webkit-text-size-adjust: 100%;
    -webkit-overflow-scrolling: touch;
    overflow-x: hidden;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    background: rgba(25, 25, 35, 0.8);
    backdrop-filter: blur(10px);
    border-radius: 15px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.1);
    width: 100%;
}

/* 头部样式 */
header {
    text-align: center;
    padding: 30px 20px;
    background: rgba(0, 0, 0, 0.2);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

header h1 {
    font-size: 2rem;
    margin-bottom: 15px;
    background: linear-gradient(90deg, #00c6ff, #0072ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 700;
    line-height: 1.2;
}

header p {
    font-size: 1rem;
    color: #ccc;
    max-width: 600px;
    margin: 0 auto;
}

/* 主要内容样式 */
main {
    padding: 25px 20px;
}

.contact-info {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
}

.contact-item {
    background: rgba(255, 255, 255, 0.05);
    padding: 25px;
    border-radius: 12px;
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease, background 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.05);
    min-height: 120px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    touch-action: manipulation;
}

.contact-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
    background: rgba(255, 255, 255, 0.08);
}

.contact-item:active {
    transform: translateY(-2px);
}

.contact-item h3 {
    font-size: 1.3rem;
    margin-bottom: 10px;
    color: #00c6ff;
    font-weight: 600;
}

.contact-item p {
    font-size: 1.2rem;
    font-weight: 600;
    word-break: break-all;
}

/* 底部样式 */
footer {
    text-align: center;
    padding: 15px;
    background: rgba(0, 0, 0, 0.2);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* 移除管理员登录链接后使用的简约底部样式 */
.simple-footer {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.5);
    margin: 0;
}

/* 响应式设计 - 为不同屏幕尺寸优化 */
@media (min-width: 600px) {
    .contact-info {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 25px;
    }
}

@media (max-width: 768px) {
    body {
        padding: 10px;
    }
    
    header {
        padding: 25px 15px;
    }
    
    header h1 {
        font-size: 1.8rem;
    }
    
    header p {
        font-size: 0.95rem;
    }
    
    main {
        padding: 20px 15px;
    }
    
    .contact-item {
        padding: 20px 15px;
    }
}

@media (max-width: 480px) {
    .container {
        border-radius: 10px;
    }
    
    header {
        padding: 20px 15px;
    }
    
    header h1 {
        font-size: 1.6rem;
    }
    
    main {
        padding: 15px 12px;
    }
    
    .contact-item {
        padding: 18px 12px;
        min-height: 100px;
    }
    
    .contact-item h3 {
        font-size: 1.1rem;
    }
    
    .contact-item p {
        font-size: 1.1rem;
    }
    
    .admin-link {
        padding: 10px 20px;
    }
}

/* 触摸设备优化 */
@media (hover: none) and (pointer: coarse) {
    .contact-item:active {
        transform: translateY(-5px);
        background: rgba(255, 255, 255, 0.1);
    }
    
    .admin-link:active {
        background: rgba(0, 198, 255, 0.2);
    }
}

/* 增加可访问性 */
.contact-item:focus {
    outline: 2px solid #00c6ff;
    outline-offset: 2px;
}

.admin-link:focus {
    outline: 2px solid #00c6ff;
    outline-offset: 2px;
}