:root {
    --primary-color: #2e7d32;
    --secondary-color: #4caf50;
    --accent-color: #8bc34a;
    --light-green: #e8f5e9;
    --dark-green: #1b5e20;
    --text-dark: #2e3a40;
    --text-light: #6c757d;
    --border-radius: 16px;
    --transition: all 0.3s ease;
}

* {
    box-sizing: border-box;
}

body {
    background:
        linear-gradient(rgba(255, 255, 255, 0.92), rgba(255, 255, 255, 0.95)),
        url('../images/background.png') center/cover no-repeat fixed;
    font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
    color: var(--text-dark);
    min-height: 100vh;
    line-height: 1.6;
    margin: 0;
    padding: 0;
}

/*******登录注册*******/
.auth-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
        background:
        linear-gradient(rgba(255, 255, 255, 0.85), rgba(255, 255, 255, 0.9)),
        url('../images/background.png') center/cover no-repeat fixed;
    padding: 20px;
}

.auth-card {
    background: white;
    border-radius: 10px;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 400px;
    overflow: hidden;
}

.auth-header {
    background: white;
    color: var(--primary-color);
    padding: 30px;
    text-align: center;
    border-bottom: 2px solid var(--light-green);
}

.auth-header h3 {
    font-weight: 600;
    margin: 0;
    font-size: 1.5rem;
    color: var(--primary-color);
}

.auth-header p {
    color: var(--text-dark);
    margin: 8px 0 0 0;
    font-size: 0.9rem;
    opacity: 0.8;
}

.auth-body {
    padding: 30px;
}

/* 表单组样式 */
.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-dark);
    font-size: 0.9rem;
}

.form-control {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid #e1e5e9;
    border-radius: 6px;
    font-size: 14px;
    transition: all 0.3s ease;
    background: #fafbfc;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    background: white;
    box-shadow: 0 0 0 3px rgba(46, 125, 50, 0.1);
}

/* 记住我样式 */
.remember-me {
    display: flex;
    align-items: center;
    margin: 20px 0;
}

.remember-me input {
    margin-right: 8px;
    transform: scale(1.1);
}

.remember-me label {
    font-size: 0.9rem;
    color: var(--text-dark);
}

/* 登录按钮样式 */
.login-btn {
    width: 100%;
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 12px;
    border-radius: 6px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-bottom: 20px;
}

.login-btn:hover {
    background: var(--dark-green);
    transform: translateY(-1px);
    box-shadow: 0 5px 15px rgba(46, 125, 50, 0.3);
}

/* 注册按钮样式 */
.register-btn {
    width: 100%;
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 12px;
    border-radius: 6px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-bottom: 20px;
}

.register-btn:hover {
    background: var(--dark-green);
    transform: translateY(-1px);
    box-shadow: 0 5px 15px rgba(46, 125, 50, 0.3);
}

/* 链接样式 */
.auth-link {
    text-align: center;
    margin-top: 15px;
}

.auth-link p {
    color: var(--text-dark);
    margin: 0;
}

.auth-link a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s ease;
}

.auth-link a:hover {
    color: var(--dark-green);
    text-decoration: underline;
}

/* 错误提示样式 */
.error-message {
    color: #dc3545;
    font-size: 0.8rem;
    margin-top: 5px;
    display: flex;
    align-items: center;
}

.error-message::before {
    content: "!";
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 16px;
    height: 16px;
    background: #dc3545;
    color: white;
    border-radius: 50%;
    font-size: 0.7rem;
    font-weight: bold;
    margin-right: 5px;
}

/* 响应式设计 */
@media (max-width: 480px) {
    .auth-container {
        padding: 10px;
    }

    .auth-card {
        max-width: 100%;
    }

    .auth-header {
        padding: 25px 20px;
    }

    .auth-body {
        padding: 25px 20px;
    }
}


/* 注册页面专用样式 */
.register-card {
    max-width: 500px !important;
}

.form-row {
    display: flex;
    gap: 20px;
    margin-bottom: 20px;
}

.form-row .form-group {
    flex: 1;
    margin-bottom: 0;
}

/* 输入框统一高度 */
.form-control {
    height: 48px;
    font-size: 15px;
}

/* 注册按钮样式优化 */
.register-btn {
    width: 100%;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    border: none;
    padding: 14px;
    border-radius: 8px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    margin: 25px 0 20px 0;
    letter-spacing: 0.5px;
}

.register-btn:hover {
    background: linear-gradient(135deg, var(--dark-green) 0%, var(--primary-color) 100%);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(46, 125, 50, 0.3);
}

/* 响应式调整 */
@media (max-width: 576px) {
    .register-card {
        max-width: 100% !important;
    }

    .form-row {
        flex-direction: column;
        gap: 0;
    }

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



/*******导航栏*******/
/* 导航栏高亮样式 */
.navbar-nav .nav-link {
    color: rgba(255, 255, 255, 0.9) !important;
    font-weight: 500;
    padding: 0.75rem 1.25rem !important;
    border-radius: 12px;
    transition: var(--transition);
    position: relative;
}

.navbar-nav .nav-link:hover {
    color: white !important;
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-2px);
}

/* 激活状态样式 */
.navbar-nav .nav-link.active {
    color: white !important;
    background: rgba(255, 255, 255, 0.25);
    font-weight: 600;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.navbar-nav .nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 50%;
    transform: translateX(-50%);
    width: 80%;
    height: 3px;
    background: white;
    border-radius: 2px;
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        width: 0;
    }
    to {
        width: 80%;
    }
}

/* 下拉菜单激活状态 */
.dropdown-item.active {
    background: var(--primary-color);
    color: white !important;
}

.dropdown-item.active i {
    color: white !important;
}


/* 移除导航栏容器的默认约束 */
.navbar > .container {
    max-width: none !important;
    padding-left: 15px !important;
    padding-right: 15px !important;
}

/* 强制标题靠左 */
.navbar-brand.fw-bold.ms-3 {
    margin-left: 0 !important;
    margin-right: auto !important;
    padding-left: 0 !important;
}

/* 隐藏导航图标 */
.navbar-nav .nav-link i {
    display: none !important;
}

/* 调整菜单项间距 */
.navbar-nav .nav-item {
    margin: 0 5px !important;
}

.navbar-nav .nav-link {
    padding: 0.5rem 0.8rem !important;
}

/* 增加导航栏与内容间距 */
main.container.mt-5.pt-4 {
    margin-top: 90px !important;
    padding-top: 25px !important;
}

/* === 导航栏美观优化 === */

/* 导航栏整体美化 */
.navbar {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--dark-green) 100%) !important;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

/* 品牌标题美化 */
.navbar-brand {
    font-size: 1.3rem !important;
    font-weight: 700 !important;
    color: white !important;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    padding: 0.5rem 0 !important;
    transition: all 0.3s ease;
}

.navbar-brand:hover {
    transform: translateY(-1px);
    text-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
}

/* 导航链接美化 */
.navbar-nav .nav-link {
    color: rgba(255, 255, 255, 0.9) !important;
    font-weight: 500;
    padding: 0.6rem 1.2rem !important;
    border-radius: 25px;
    transition: all 0.3s ease;
    margin: 0 4px !important;
    position: relative;
    border: 1px solid transparent;
}

.navbar-nav .nav-link:hover {
    color: white !important;
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

/* 激活状态美化 */
.navbar-nav .nav-link.active {
    color: white !important;
    background: rgba(255, 255, 255, 0.25);
    border: 1px solid rgba(255, 255, 255, 0.3);
    font-weight: 600;
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
}

/* 用户下拉菜单美化 */
.navbar-nav.ms-auto .nav-link {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    padding: 0.5rem 1rem !important;
    border: 1px solid rgba(255, 255, 255, 0.15);
}

.navbar-nav.ms-auto .nav-link:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-1px);
}

/* 下拉菜单美化 */
.dropdown-menu {
    background: white;
    border: none;
    border-radius: 12px;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
    margin-top: 8px !important;
    overflow: hidden;
}

.dropdown-item {
    padding: 0.75rem 1.25rem;
    color: var(--text-dark);
    transition: all 0.2s ease;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.dropdown-item:hover {
    background: var(--light-green);
    color: var(--primary-color);
    transform: translateX(5px);
}

.dropdown-item:last-child {
    border-bottom: none;
}

/* 导航栏切换按钮美化 */
.navbar-toggler {
    border: 1px solid rgba(255, 255, 255, 0.3);
    padding: 0.4rem 0.6rem;
}

.navbar-toggler:focus {
    box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.3);
}

/* 响应式调整 */
@media (max-width: 991px) {
    .navbar-nav .nav-link {
        margin: 2px 0 !important;
        border-radius: 8px;
    }
    
    #navbarNav {
        margin-top: 10px;
        padding: 10px 0;
    }
}

/* 微调间距 */
.navbar-nav .nav-item {
    margin: 0 2px !important;
}


/* === 导航栏紧凑优化 === */

/* 减小导航项间距和内边距 */
.navbar-nav .nav-link {
    padding: 0.5rem 0.8rem !important; /* 减小内边距 */
    margin: 0 2px !important; /* 减小外边距 */
    font-size: 0.8rem; /* 稍微减小字体 */
    border-radius: 20px; /* 减小圆角 */
}

/* 品牌标题紧凑 */
.navbar-brand {
    font-size: 1.2rem !important; /* 减小标题字体 */
    margin-right: 1rem !important;
}

/* 用户信息紧凑 */
.navbar-nav.ms-auto .nav-link {
    padding: 0.4rem 0.8rem !important;
    font-size: 0.9rem;
}

/* 确保容器充分利用空间 */
.navbar > .container {
    padding-left: 10px !important;
    padding-right: 10px !important;
}

/* 主菜单自动调整 */
#navbarNav {
    flex-wrap: nowrap;
    min-width: 0; /* 允许缩小 */
}

.navbar-nav {
    flex-wrap: nowrap;
    justify-content: center;
}