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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #333;
    line-height: 1.6;
    min-height: 100vh;
    padding: 20px;
}

/* 容器样式 */
.container {
    max-width: 600px;
    margin: 0 auto;
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    padding: 30px;
    text-align: center;
}

/* 标题样式 */
h1 {
    color: #2d3748;
    margin-bottom: 10px;
    font-size: 28px;
    font-weight: 600;
}

.container > p {
    color: #718096;
    margin-bottom: 30px;
    font-size: 16px;
}

/* 表单样式 */
.form-group {
    margin-bottom: 25px;
    text-align: left;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: #4a5568;
    font-weight: 500;
    font-size: 14px;
}

.form-group input {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid #e2e8f0;
    border-radius: 8px;
    font-size: 16px;
    transition: all 0.3s ease;
    background: #f7fafc;
}

.form-group input:focus {
    outline: none;
    border-color: #667eea;
    background: #fff;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.form-group small {
    display: block;
    margin-top: 5px;
    color: #a0aec0;
    font-size: 12px;
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    text-align: center;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    width: 100%;
}

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

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

.btn-copy {
    background: #48bb78;
    color: #fff;
    padding: 10px 18px;
    font-size: 14px;
    margin-left: 10px;
}

.btn-copy:hover {
    background: #38a169;
    transform: translateY(-1px);
}

/* 链接容器样式 */
.link-container {
    display: flex;
    margin: 20px 0;
    align-items: center;
}

.link-container input {
    flex: 1;
    padding: 12px 16px;
    border: 2px solid #e2e8f0;
    border-radius: 8px 0 0 8px;
    font-size: 14px;
    background: #f7fafc;
    border-right: none;
}

.link-container .btn-copy {
    border-radius: 0 8px 8px 0;
    margin-left: 0;
    border-left: none;
}

/* 结果样式 */
.result {
    margin-top: 30px;
    padding: 20px;
    background: #f0fff4;
    border: 2px solid #c6f6d5;
    border-radius: 12px;
}

.result h2 {
    color: #22543d;
    margin-bottom: 15px;
    font-size: 20px;
}

/* 提示信息样式 */
.tip {
    color: #4a5568;
    font-size: 14px;
    margin-top: 15px;
    padding: 10px;
    background: #f7fafc;
    border-radius: 8px;
}

/* 警告样式 */
.warning-text {
    color: #c53030;
    font-size: 18px;
    font-weight: 500;
    margin-bottom: 20px;
    line-height: 1.5;
}

/* 二维码容器样式 */
.qrcode-container {
    margin: 25px 0;
    padding: 20px;
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    display: inline-block;
}

.qrcode {
    display: block;
    margin: 0 auto 15px;
    max-width: 200px;
    height: auto;
    border: 2px solid #e2e8f0;
    border-radius: 8px;
    padding: 10px;
    background: #fff;
}

.qrcode-container p {
    color: #4a5568;
    font-size: 14px;
    margin: 0;
}

/* 消息框样式 */
.message-box {
    background: #fef5e7;
    border: 2px solid #ffe0b2;
    border-radius: 12px;
    padding: 25px;
    margin-bottom: 25px;
}

/* PC端特定样式 */
.pc-only h1 {
    color: #c53030;
    margin-bottom: 20px;
}

.copy-link {
    margin-top: 25px;
    text-align: left;
}

.copy-link p {
    color: #4a5568;
    font-weight: 500;
    margin-bottom: 10px;
}

/* 提示列表样式 */
.tip ul {
    margin-top: 10px;
    padding-left: 20px;
}

.tip li {
    margin-bottom: 5px;
    color: #4a5568;
    font-size: 13px;
}

/* 复制成功消息样式 */
.copy-message {
    position: fixed;
    top: 20px;
    right: 20px;
    background: #48bb78;
    color: #fff;
    padding: 12px 24px;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    font-weight: 500;
    z-index: 1000;
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* 响应式设计 */
@media (max-width: 768px) {
    body {
        padding: 10px;
    }
    
    .container {
        padding: 20px;
    }
    
    h1 {
        font-size: 24px;
    }
    
    .form-group input {
        font-size: 14px;
    }
    
    .link-container {
        flex-direction: column;
        align-items: stretch;
    }
    
    .link-container input {
        border-radius: 8px 8px 0 0;
        border-right: 2px solid #e2e8f0;
        margin-bottom: -2px;
    }
    
    .link-container .btn-copy {
        border-radius: 0 0 8px 8px;
        margin-left: 0;
        border-left: 2px solid #e2e8f0;
    }
    
    .qrcode {
        max-width: 180px;
    }
    
    .warning-text {
        font-size: 16px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 15px;
    }
    
    h1 {
        font-size: 20px;
    }
    
    .btn {
        padding: 10px 20px;
        font-size: 14px;
    }
    
    .qrcode {
        max-width: 150px;
    }
    
    .qrcode-container {
        padding: 15px;
    }
}