/* Reset some default styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* Body & Page Background */
body {
    font-family: 'Arial', sans-serif;
    background-color: #f5f5f5;
}


 
:root {
    --primary-blue: #6A9FB5;
    --secondary-blue: #8BB4C5;
    --light-blue: #E1F0F7;
    --accent-blue: #4A7B9D;
    --text-dark: #2C3E50;
    --text-light: #7F8C8D;
    --card-shadow: 0 4px 12px rgba(106, 159, 181, 0.15);
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #F9FBFD;
    color: var(--text-dark);
    line-height: 1.6;
}

/* 导航栏样式 */
.navbar {
    background: linear-gradient(135deg, var(--primary-blue), var(--accent-blue));
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    padding: 0.8rem 1rem;
}

.navbar-brand {
    font-weight: 700;
    font-size: 1.5rem;
    color: white !important;
}

.nav-link {
    color: rgba(255, 255, 255, 0.9) !important;
    font-weight: 500;
    padding: 0.5rem 1rem !important;
    transition: all 0.3s ease;
    border-radius: 4px;
}

.nav-link:hover,
.nav-link.active {
    color: white !important;
    background-color: rgba(255, 255, 255, 0.15);
}

.user-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.7);
    object-fit: cover;
}

/* 学习路径区域 */
.learning-path-section {
    background: linear-gradient(135deg, var(--light-blue), #D4E9F2);
    padding: 2rem 0;
    border-radius: 0 0 20px 20px;
    margin-bottom: 2rem;
}

.section-title {
    color: var(--accent-blue);
    font-weight: 600;
    margin-bottom: 1.5rem;
    position: relative;
    padding-bottom: 0.5rem;
    font-size: 28px;
}

.section-title:after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 3px;
    background-color: var(--primary-blue);
    border-radius: 2px;
}

/* 专业选择器样式优化 */
.major-selector {
    position: relative;
    margin-bottom: 2rem;
}

.major-selector label {
    font-weight: 600;
    color: var(--accent-blue);
    margin-bottom: 0.5rem;
    display: block;
}

.major-selector select {
    appearance: none;
    background-color: white;
    border: 2px solid var(--primary-blue);
    border-radius: 8px;
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    color: var(--text-dark);
    width: 100%;
    max-width: 300px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.major-selector select:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(106, 159, 181, 0.3);
    border-color: var(--accent-blue);
}

.major-selector::after {
    content: '\f078';
    font-family: 'Font Awesome 5 Free';
    font-weight: 900;
    position: absolute;
    top: 50%;
    right: 1rem;
    transform: translateY(-50%);
    pointer-events: none;
    color: var(--primary-blue);
}

/* 学习路径图样式 - 横向流程图 */
.path-flow {
    background-color: white;
    border-radius: 12px;
    padding: 2rem;
    box-shadow: var(--card-shadow);
    overflow-x: auto;
    position: relative;
}

.path-container {
    display: flex;
    min-width: 900px;
    position: relative;
}

.path-step {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
    padding: 0 1rem;
}

.step-connector {
    position: absolute;
    top: 40px;
    left: -50%;
    width: 100%;
    height: 2px;
    background-color: var(--primary-blue);
    z-index: 1;
}

.step-node {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background-color: var(--light-blue);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
    position: relative;
    z-index: 2;
    transition: all 0.3s ease;
    cursor: pointer;
}

.step-node:hover {
    transform: scale(1.05);
    background-color: var(--primary-blue);
}

.step-node:hover .step-icon {
    color: white;
}

.step-icon {
    font-size: 1.8rem;
    color: var(--accent-blue);
}

.step-content {
    text-align: center;
    width: 100%;
}

.step-title {
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--accent-blue);
}

.step-courses {
    font-size: 0.9rem;
    color: var(--text-light);
    margin-bottom: 0.5rem;
}

.step-progress {
    height: 6px;
    background-color: #e9ecef;
    border-radius: 3px;
    overflow: hidden;
    margin-bottom: 0.5rem;
}

.step-progress-bar {
    height: 100%;
    background-color: var(--primary-blue);
    border-radius: 3px;
    transition: width 0.5s ease;
}

.step-status {
    font-size: 0.8rem;
    color: var(--text-light);
}

.step-completed .step-node {
    background-color: var(--primary-blue);
}

.step-completed .step-icon {
    color: white;
}

.step-active .step-node {
    background-color: var(--accent-blue);
    box-shadow: 0 0 0 4px rgba(74, 123, 157, 0.3);
}

.step-active .step-icon {
    color: white;
}

/* 课程详情面板 */
.course-panel {
    display: none;
    background-color: white;
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: var(--card-shadow);
    margin-top: 1.5rem;
}

.course-panel.active {
    display: block;
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid #e9ecef;
}

.panel-title {
    font-weight: 600;
    color: var(--accent-blue);
    margin: 0;
}

.close-panel {
    background: none;
    border: none;
    font-size: 1.2rem;
    color: var(--text-light);
    cursor: pointer;
}

.course-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1rem;
}

.course-item {
    display: flex;
    align-items: center;
    padding: 0.75rem;
    border-radius: 8px;
    border: 1px solid #e9ecef;
    transition: all 0.3s ease;
}

.course-item:hover {
    border-color: var(--primary-blue);
    box-shadow: 0 2px 8px rgba(106, 159, 181, 0.15);
}

.course-check {
    margin-right: 0.75rem;
    color: #28a745;
}

.course-info {
    flex: 1;
}

.course-name {
    font-weight: 500;
    margin-bottom: 0.25rem;
}

.course-duration {
    font-size: 0.8rem;
    color: var(--text-light);
}

.course-action {
    margin-left: 0.75rem;
}

/* 搜索区域 */
.search-section {
    padding: 0;
}

.search-container {
    background-color: white;
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: var(--card-shadow);
}

/* 课程卡片样式 */
.course-card {
    border: none;
    border-radius: 12px;
    box-shadow: var(--card-shadow);
    transition: all 0.3s ease;
    margin-bottom: 1.5rem;
    overflow: hidden;
    background-color: white;
}

.course-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(106, 159, 181, 0.2);
}

.course-img {
    height: 160px;
    object-fit: cover;
    width: 100%;
}

.course-category {
    display: inline-block;
    background-color: var(--light-blue);
    color: var(--accent-blue);
    font-size: 0.8rem;
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    margin-bottom: 0.8rem;
}

.course-title {
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.course-title-in-progress{
    color: var(--text-dark);
    font-size: 1.4rem;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-align: center;
}

.course-instructor {
    color: var(--text-light);
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.course-meta {
    display: flex;
    justify-content: space-between;
    color: var(--text-light);
    font-size: 0.85rem;
    margin-bottom: 1rem;
}

.course-rating {
    color: #FFC107;
}

.btn-view {
    background-color: white;
    color: var(--primary-blue);
    border: 1px solid var(--primary-blue);
    font-weight: 500;
    transition: all 0.3s ease;
}

.btn-view:hover {
    background-color: var(--light-blue);
    color: var(--accent-blue);
}

.btn-process {
    background-color: var(--primary-blue);
    color: white;
    font-weight: 500;
    transition: all 0.3s ease;
}

.btn-enroll:hover {
    background-color: var(--accent-blue);
    color: white;
}


/* Dashboard 主体部分 */
.dashboard {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.dashboard-title {
    font-size: 28px;
    font-weight: bold;
    margin-bottom: 20px;
    text-align: center;
    
}

/* 课程卡片容器 */
.course-cards {
    display: flex;
    flex-wrap: nowrap;
    gap: 20px;
    justify-content: flex-start;
    padding: 10px 0;
    overflow: hidden;
    position: relative;
    
}

/* 课程卡片 */
.course-card {
    width: 300px;
    height: 500px;
    display: flex;
    flex-direction: column;
    background-color: white;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    transition: transform 0.3s;
}

.select-button {
    display: block;
    width: 100%;
    padding: 10px;
    background-color: #2575fc;
    color: white;
    border: none;
    cursor: pointer;
    font-size: 16px;
    margin-top: auto; /* 将按钮推到父元素的底部 */
}

.course-card:hover {
    transform: translateY(-10px); /* 提升效果 */
}

.course-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.course-info {
    padding: 20px;
}

.course-name {
    font-size: 22px;
    font-weight: bold;
    color: #333;
}

.course-description {
    font-size: 14px;
    color: #777;
    margin-top: 10px;
}
/* 右侧滑出进度卡片样式 */
.course-progress {
    position: fixed;
    top: 0;
    right: -400px;  /* 初始时在屏幕外 */
    width: 400px;
    height: 100%;
    background-color: #fff;
    box-shadow: -2px 0 5px rgba(0, 0, 0, 0.1);
    padding: 30px;
    transition: right 0.3s ease;
    z-index: 9999;
    border-radius: 15px;  /* 添加圆角 */
}

.course-progress.open {
    right: 0;  /* 打开时显示 */
}

.progress-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 20px;
    margin-bottom: 20px;
    text-align: center;
}

.close-btn {
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
}


/* 章节和子章节样式 */
.chapter-list {
    list-style-type: none;
    padding-left: 0;
}

.chapter-item {
    margin: 5px 0;
    padding: 5px;
    cursor: pointer;
}

.chapter-item .chapter-title {
    font-size: 16px;
    font-weight: bold;
}

.chapter-item .sub-chapter-list {
    display: none; /* 初始状态下子章节隐藏 */
    padding-left: 20px;
}

.chapter-item.open .sub-chapter-list {
    display: block; /* 展开时显示子章节 */
}

.chapter-item:hover {
    background-color: #f1f1f1;
    border-radius: 5px;
}

/* 子章节的样式 */
.sub-chapter-item {
    margin: 3px 0;
    padding: 3px;
    font-size: 14px;
}

.sub-chapter-item:hover {
    background-color: #e8e8e8;
}
/* 响应式调整 */
@media (max-width: 768px) {
    .path-container {
        min-width: 700px;
    }

    .step-node {
        width: 60px;
        height: 60px;
    }

    .step-icon {
        font-size: 1.4rem;
    }

    .step-title {
        font-size: 0.9rem;
    }

    .course-list {
        grid-template-columns: 1fr;
    }
}


.fas.fa-times-circle.fa-lg {
    color: var(--accent-blue);
}