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

html, body {
    height: 100%;
}

body {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #fff;
}

/* 主要内容区域 */
.main-content {
    flex: 1 0 auto;
    padding: 2rem 0;
}
.main-box {
    width: 80%;
    max-width: 1200px;
    min-height: 80vh;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Footer 始终位于页面最下方 */
.footer {
    flex-shrink: 0;
    background-color: #f8f9fa;
    border-top: 1px solid #e9ecef;
    padding: 2rem 0;
    margin-top: auto;
    text-align: center;
    color: #6c757d;
    font-size: 0.9rem;
}

.footer .container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.footer p {
    margin: 0.5rem 0;
}

.footer a {
    color: #007bff;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer a:hover {
    color: #0056b3;
    text-decoration: underline;
}

/* Logo 样式 */
.logo {
    width: 100px;
    height: auto;
}

/* 通用容器样式 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* 响应式样式 */
@media (max-width: 768px) {
    .footer {
        padding: 1.5rem 0;
    }
    
    .footer .container {
        padding: 0 1rem;
    }
    
    .container {
        padding: 0 1rem;
    }
}

@media (max-width: 480px) {
    .footer {
        padding: 1rem 0;
        font-size: 0.8rem;
    }
}

/* 按钮样式 - Layui风格设计 */
.btn {
    display: inline-block;
    height: 38px;
    line-height: 38px;
    padding: 0 18px;
    background-color: #009688;
    color: #fff;
    white-space: nowrap;
    text-align: center;
    font-size: 14px;
    border: none;
    border-radius: 2px;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    outline: none;
    font-family: "Helvetica Neue", Helvetica, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", SimSun, sans-serif;
    box-sizing: border-box;
    vertical-align: middle;
}

.btn:hover {
    opacity: 0.8;
    filter: alpha(opacity=80);
}

.btn:active {
    opacity: 1;
    filter: alpha(opacity=100);
}

.btn:focus {
    box-shadow: 0 0 0 2px rgba(0, 150, 136, 0.3);
}

.btn-primary {
    background-color: #1E9FFF;
    color: #fff;
}

.btn-primary:hover {
    background-color: #198cff;
}

.btn-primary:focus {
    box-shadow: 0 0 0 2px rgba(30, 159, 255, 0.3);
}

.btn-success {
    background-color: #5FB878;
    color: #fff;
}

.btn-success:hover {
    background-color: #52b56b;
}

.btn-success:focus {
    box-shadow: 0 0 0 2px rgba(95, 184, 120, 0.3);
}

.btn-success {
    background-color: #5FB878;
    color: #fff;
}

.btn-success:hover {
    background-color: #52b56b;
}

.btn-success:focus {
    box-shadow: 0 0 0 2px rgba(95, 184, 120, 0.3);
}

.btn-no-color {
    background-color: #f1f1f1;
    color: #555;
}

.btn-no-color:hover {
    background-color: #f2f2f2;
}

.btn-no-color:focus {
    box-shadow: 0 0 0 2px rgba(95, 184, 120, 0.3);
}

.btn-danger {
    background-color: #FF5722;
    color: #fff;
}

.btn-danger:hover {
    background-color: #ff4511;
}

.btn-danger:focus {
    box-shadow: 0 0 0 2px rgba(255, 87, 34, 0.3);
}

.back-btn {
    background-color: #9B9B9B;
    color: #fff;
}

.back-btn:hover {
    background-color: #8a8a8a;
}

.back-btn:focus {
    box-shadow: 0 0 0 2px rgba(155, 155, 155, 0.3);
}

/* 次级按钮 - 用于兼容性 */
.btn-secondary {
    background-color: #9B9B9B;
    color: #fff;
}

.btn-secondary:hover {
    background-color: #8a8a8a;
}

.btn-secondary:focus {
    box-shadow: 0 0 0 2px rgba(155, 155, 155, 0.3);
}

/* Layui风格按钮尺寸变体 */
.btn-sm {
    height: 30px;
    line-height: 30px;
    padding: 0 10px;
    font-size: 12px;
}

.btn-lg {
    height: 44px;
    line-height: 44px;
    padding: 0 25px;
    font-size: 16px;
}

/* Layui风格禁用状态 */
.btn:disabled,
.btn.disabled {
    background-color: #fbfbfb;
    color: #d2d2d2;
    cursor: not-allowed;
    opacity: 1;
    border: 1px solid #e6e6e6;
}

.btn:disabled:hover,
.btn.disabled:hover {
    opacity: 1;
    background-color: #fbfbfb;
}

/* Layui风格边框按钮 */
.btn-outline {
    background-color: transparent;
    border: 1px solid #C9C9C9;
    color: #555;
}

.btn-outline:hover {
    background-color: #f8f8f8;
    border-color: #009688;
    color: #009688;
}

.btn-outline-primary {
    background-color: transparent;
    border: 1px solid #1E9FFF;
    color: #1E9FFF;
}

.btn-outline-primary:hover {
    background-color: #1E9FFF;
    color: #fff;
}

.btn-outline-success {
    background-color: transparent;
    border: 1px solid #5FB878;
    color: #5FB878;
}

.btn-outline-success:hover {
    background-color: #5FB878;
    color: #fff;
}

.btn-outline-danger {
    background-color: transparent;
    border: 1px solid #FF5722;
    color: #FF5722;
}

.btn-outline-danger:hover {
    background-color: #FF5722;
    color: #fff;
}