/* 课程管理页面样式 */
.course-management {
    background-color: white;
    padding: 1.5rem;
    border-radius: 0.35rem;
    box-shadow: var(--shadow);
}

/* 搜索和筛选区域 */
.search-filter {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.search-box {
    flex: 1;
    display: flex;
    gap: 0.5rem;
}

.search-box input {
    flex: 1;
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: 0.35rem;
}

.btn-search {
    padding: 0.5rem 1rem;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 0.35rem;
    cursor: pointer;
}

.filter-box select {
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: 0.35rem;
    min-width: 150px;
}

/* 按钮样式 */
.btn-primary {
    background-color: #3498db;
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: background-color 0.3s;
}

.btn-primary:hover {
    background-color: #2980b9;
}

.btn-secondary {
    background-color: #95a5a6;
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.3s;
}

.btn-secondary:hover {
    background-color: #7f8c8d;
}

/* 表格中的操作按钮 */
.btn-edit,
.btn-delete {
    padding: 0.5rem 0.75rem;
    border: none;
    border-radius: 0.35rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    transition: all 0.3s ease;
}

.btn-edit {
    background-color: var(--warning-color);
    color: white;
}

.btn-edit:hover {
    background-color: #d68910;
}

.btn-delete {
    background-color: var(--danger-color);
    color: white;
}

.btn-delete:hover {
    background-color: #c0392b;
}

/* 表格样式 */
.table-container {
    overflow-x: auto;
}

.course-table {
    width: 100%;
    border-collapse: collapse;
}

.course-table th,
.course-table td {
    padding: 0.75rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.course-table th {
    background-color: var(--light-color);
    font-weight: 600;
}

.course-table tr:hover {
    background-color: var(--light-color);
}

/* 操作按钮容器 */
.action-buttons {
    display: flex;
    gap: 8px;
    justify-content: flex-start;
    align-items: center;
}

.action-buttons button {
    padding: 6px 12px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 14px;
}

.action-buttons .btn-edit {
    background-color: #4CAF50;
    color: white;
}

.action-buttons .btn-edit:hover {
    background-color: #45a049;
}

.action-buttons .btn-delete {
    background-color: #f44336;
    color: white;
}

.action-buttons .btn-delete:hover {
    background-color: #da190b;
}

.action-buttons i {
    font-size: 14px;
}

/* 模态框样式 */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1000;
}

.modal-content {
    position: relative;
    background-color: white;
    margin: 2rem auto;
    padding: 0;
    width: 90%;
    max-width: 600px;
    border-radius: 0.5rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.modal-header {
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    margin: 0;
    color: var(--text-color);
}

.close-btn {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-color);
}

.modal-body {
    padding: 1.5rem;
}

/* 表单样式 */
.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-color);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: 0.35rem;
    font-size: 1rem;
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

.form-actions {
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
    margin-top: 1.5rem;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .search-filter {
        flex-direction: column;
    }

    .filter-box select {
        width: 100%;
    }

    .course-table {
        font-size: 0.9rem;
    }

    .course-table th,
    .course-table td {
        padding: 0.75rem 0.5rem;
    }

    .btn-edit,
    .btn-delete {
        padding: 0.25rem 0.5rem;
        font-size: 0.8rem;
    }
}