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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: #1f2937;
    background: linear-gradient(135deg, #ced4da 0%, #adb5bd 50%, #868e96 100%);
    min-height: 100vh;
}

.app-container {
    max-width: 480px;
    margin: 0 auto;
    min-height: 100vh;
    background: #dee2e6;
    position: relative;
    box-shadow: 0 0 40px rgba(0, 0, 0, 0.3), 0 0 0 1px rgba(0, 0, 0, 0.15);
    border-radius: 0;
}

/* 页面容器 */
.page {
    padding: 20px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* 首页样式 */
.logo-container {
    text-align: center;
    margin: 40px 0;
}

.logo-placeholder {
    margin-bottom: 20px;
}

.logo-container h1 {
    font-size: 28px;
    font-weight: 700;
    color: #000000;
    margin-bottom: 10px;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

.welcome-content {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.welcome-content h2 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 16px;
    color: #1f2937;
}

.welcome-content p {
    font-size: 16px;
    color: #6b7280;
    margin-bottom: 24px;
    line-height: 1.7;
}

/* 隐私声明 */
.privacy-section {
    background: #f8fafc;
    border-radius: 12px;
    padding: 20px;
    margin: 20px 0;
    border: 1px solid #e2e8f0;
}

.privacy-content h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 12px;
    color: #374151;
}

.privacy-content h4 {
    font-size: 16px;
    font-weight: 600;
    margin: 16px 0 8px 0;
    color: #1f2937;
}

.privacy-text {
    max-height: 200px;
    overflow-y: auto;
    margin-bottom: 16px;
    padding-right: 8px;
}

.privacy-text p {
    font-size: 14px;
    color: #6b7280;
    margin-bottom: 8px;
}

/* 复选框样式 */
.checkbox-container {
    display: flex;
    align-items: flex-start;
    font-size: 14px;
    color: #374151;
    cursor: pointer;
    user-select: none;
    padding: 20px;
    border: 2px solid #e5e7eb;
    border-radius: 16px;
    background: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
    transition: all 0.3s ease;
    margin-top: 20px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    position: relative;
    overflow: hidden;
}

.checkbox-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    /* background: linear-gradient(90deg, #2563eb, #3b82f6, #06b6d4); */
    opacity: 0;
    transition: opacity 0.3s ease;
}

.checkbox-container:hover {
    border-color: #2563eb;
    background: linear-gradient(135deg, #f8fafc 0%, #eff6ff 100%);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(37, 99, 235, 0.15);
}

.checkbox-container:hover::before {
    opacity: 1;
}

.checkbox-container input {
    display: none;
}

.checkmark {
    width: 24px;
    height: 24px;
    border: 2px solid #d1d5db;
    border-radius: 8px;
    margin-right: 16px;
    position: relative;
    transition: all 0.3s ease;
    flex-shrink: 0;
    margin-top: 2px;
    background: white;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.checkbox-container input:checked+.checkmark {
    background: linear-gradient(135deg, #2563eb 0%, #3b82f6 100%);
    border-color: #2563eb;
    transform: scale(1.05);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.checkbox-container input:checked+.checkmark::after {
    content: '';
    position: absolute;
    left: 50%;
    top: 50%;
    width: 6px;
    height: 10px;
    border: solid white;
    border-width: 0 3px 3px 0;
    transform: translate(-50%, -60%) rotate(45deg);
    animation: checkmark-appear 0.3s ease;
}

@keyframes checkmark-appear {
    0% {
        opacity: 0;
        transform: translate(-50%, -60%) rotate(45deg) scale(0);
    }

    50% {
        opacity: 1;
        transform: translate(-50%, -60%) rotate(45deg) scale(1.2);
    }

    100% {
        opacity: 1;
        transform: translate(-50%, -60%) rotate(45deg) scale(1);
    }
}

.checkbox-container label {
    flex: 1;
    line-height: 1.6;
    font-size: 15px;
    color: #374151;
    cursor: pointer;
}

.checkbox-container label strong {
    color: #1f2937;
    font-weight: 600;
    font-size: 16px;
    display: inline-block;
    margin-bottom: 4px;
}

/* 按钮样式 */
.btn-primary,
.btn-secondary {
    padding: 16px 24px;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: all 0.2s ease;
    text-align: center;
    min-height: 52px;
}

.btn-primary {
    background: #000000;
    color: white;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.btn-primary:hover:not(:disabled) {
    background: #333333;
    transform: translateY(-1px);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.4);
}

.btn-primary:disabled {
    background: #9ca3af;
    cursor: not-allowed;
    box-shadow: none;
    transform: none;
}

.btn-secondary {
    background: #f3f4f6;
    color: #374151;
    border: 1px solid #d1d5db;
}

.btn-secondary:hover {
    background: #e5e7eb;
    transform: translateY(-1px);
}

/* 进度条 */
.progress-bar {
    width: 100%;
    height: 4px;
    background: #e5e7eb;
    border-radius: 2px;
    margin-bottom: 30px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #2563eb, #3b82f6);
    border-radius: 2px;
    transition: width 0.3s ease;
    width: 0%;
}

/* 问题容器 */
.question-container {
    flex: 1;
    margin-bottom: 30px;
}

.question {
    margin-bottom: 30px;
}

.question h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 20px;
    color: #1f2937;
    line-height: 1.4;
}

.question-number {
    display: inline-block;
    background: #2563eb;
    color: white;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    text-align: center;
    line-height: 24px;
    font-size: 12px;
    font-weight: 600;
    margin-right: 8px;
}

/* 表单控件 */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: flex;
    font-size: 14px;
    font-weight: 500;
    color: #374151;
    margin-bottom: 8px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid #e5e7eb;
    border-radius: 8px;
    font-size: 16px;
    transition: border-color 0.2s ease;
    background: white;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #2563eb;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 80px;
}

/* 复合问题样式 */
.composite-question {
    background: #f8f9fa;
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 20px;
}

.composite-question h3 {
    margin-bottom: 20px;
    color: #333;
    font-size: 18px;
    font-weight: 600;
}

.composite-field {
    margin-bottom: 15px;
}

.composite-field:last-child {
    margin-bottom: 0;
}

.composite-field label {
    display: block;
    margin-bottom: 5px;
    font-weight: 500;
    color: #555;
}

.composite-field input,
.composite-field select {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 14px;
    transition: border-color 0.3s ease;
}

.composite-field input:focus,
.composite-field select:focus {
    outline: none;
    border-color: #007bff;
    box-shadow: 0 0 0 2px rgba(0, 123, 255, 0.25);
}

.composite-field-radio-group {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-top: 5px;
}

.composite-field-radio-option {
    display: flex;
    flex-direction: column;
    padding: 16px;
    border: 2px solid #e5e7eb;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.2s ease;
    background: white;
}

.composite-field-radio-option-main {
    display: flex;
    align-items: center;
    width: 100%;
}

.composite-field-radio-option input[type="radio"] {
    display: none;
    /* 隐藏原始单选框 */
}

.composite-field-radio-option label {
    flex: 1;
    margin: 0;
    cursor: pointer;
    font-size: 16px;
    position: relative;
    padding-left: 28px;
    /* 为自定义单选框留出空间 */
}

.composite-field-radio-option label::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 20px;
    height: 20px;
    border: 2px solid #9ca3af;
    border-radius: 50%;
    background-color: #fff;
    transition: all 0.2s ease;
    pointer-events: none;
}

.composite-field-radio-option label::after {
    content: '';
    position: absolute;
    left: 6px;
    top: 50%;
    transform: translateY(-50%) scale(0);
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background-color: #2563eb;
    transition: all 0.2s ease;
    pointer-events: none;
}

.composite-field-radio-option:hover {
    border-color: #2563eb;
    background: #f8fafc;
}

.composite-field-radio-option.selected {
    border-color: #2563eb;
    background: #eff6ff;
}

.composite-field-radio-option input[type="radio"]:checked+label::before {
    border-color: #2563eb;
}

.composite-field-radio-option input[type="radio"]:checked+label::after {
    transform: translateY(-50%) scale(1);
}

.composite-field .radio-option input[type="radio"] {
    width: auto;
    margin: 0;
}

.composite-field .radio-option label {
    margin: 0;
    font-weight: normal;
    cursor: pointer;
}

/* 选项组 */
.options-group {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.option-item {
    display: flex;
    flex-direction: column;
    padding: 16px;
    border: 2px solid #e5e7eb;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.2s ease;
    background: white;
}

.option-item-main {
    display: flex;
    align-items: center;
    width: 100%;
}

.option-item input[type="text"] {
    margin-top: 12px;
    margin-left: 36px;
    margin-right: 0;
    padding: 8px 12px;
    border: 1px solid #d1d5db;
    border-radius: 6px;
    font-size: 14px;
    background: #f9fafb;
    transition: all 0.2s ease;
    width: calc(100% - 36px);
    box-sizing: border-box;
}

.option-item input[type="text"]:focus {
    outline: none;
    border-color: #2563eb;
    background: white;
    box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.1);
}

.option-item:hover {
    border-color: #2563eb;
    background: #f8fafc;
}

.option-item.selected {
    border-color: #2563eb;
    background: #eff6ff;
}

.option-item input[type="radio"] {
    display: none;
    /* 隐藏原始单选框 */
}

.option-item label {
    flex: 1;
    margin: 0;
    cursor: pointer;
    font-size: 16px;
    position: relative;
    padding-left: 28px;
    /* 为自定义单选框留出空间 */
}

.option-item label::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 20px;
    height: 20px;
    border: 2px solid #9ca3af;
    border-radius: 50%;
    background-color: #fff;
    transition: all 0.2s ease;
    pointer-events: none;
}

.option-item label::after {
    content: '';
    position: absolute;
    left: 6px;
    top: 50%;
    transform: translateY(-50%) scale(0);
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background-color: #2563eb;
    transition: all 0.2s ease;
    pointer-events: none;
}

.option-item input[type="radio"]:checked+label::before {
    border-color: #2563eb;
}

.option-item input[type="radio"]:checked+label::after {
    transform: translateY(-50%) scale(1);
}

/* 多选框组 */
.checkbox-group {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.checkbox-item {
    display: flex;
    flex-direction: column;
    padding: 16px 20px;
    border: 2px solid #e5e7eb;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
    background: white;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    position: relative;
}

.checkbox-item-main {
    display: flex;
    align-items: center;
    width: 100%;
}

.checkbox-item input[type="text"] {
    margin-top: 12px;
    margin-left: 36px;
    margin-right: 0;
    padding: 8px 12px;
    border: 1px solid #d1d5db;
    border-radius: 6px;
    font-size: 14px;
    background: #f9fafb;
    transition: all 0.2s ease;
    width: calc(100% - 36px);
    box-sizing: border-box;
}

.checkbox-item input[type="text"]:focus {
    outline: none;
    border-color: #2563eb;
    background: white;
    box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.1);
}

.checkbox-item:hover {
    background: #f8fafc;
    border-color: #3b82f6;
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.checkbox-item.checked {
    background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 100%);
    border-color: #2563eb;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.2);
}

.checkbox-item input[type="checkbox"] {
    width: 20px;
    height: 20px;
    margin-right: 16px;
    accent-color: #2563eb;
    cursor: pointer;
}

.checkbox-item label {
    font-size: 16px;
    font-weight: 500;
    color: #374151;
    cursor: pointer;
    flex: 1;
    line-height: 1.5;
}

.checkbox-item.checked label {
    color: #1e40af;
    font-weight: 600;
}

/* 导航按钮 */
.navigation-buttons {
    display: flex;
    gap: 12px;
    margin-top: auto;
}

.navigation-buttons button {
    flex: 1;
}

/* 完成页面 */
.complete-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 40px 20px;
}

.success-icon {
    margin-bottom: 24px;
    animation: bounce 0.6s ease-out;
}

.complete-content h2 {
    font-size: 24px;
    font-weight: 600;
    color: #10b981;
    margin-bottom: 16px;
}

.complete-content p {
    font-size: 16px;
    color: #6b7280;
    margin-bottom: 12px;
    line-height: 1.6;
}

/* 简单签名模态框 */
.signature-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.signature-modal-content {
    background: white;
    border-radius: 12px;
    padding: 20px;
    max-width: 450px;
    width: 90%;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

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

.signature-header h3 {
    font-size: 18px;
    font-weight: 600;
    color: #1f2937;
    margin: 0;
}

.close-btn {
    background: none;
    border: none;
    font-size: 24px;
    color: #6b7280;
    cursor: pointer;
    padding: 0;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
}

.close-btn:hover {
    background: #f3f4f6;
    color: #374151;
}

.signature-area {
    border: 2px solid #e5e7eb;
    border-radius: 8px;
    margin-bottom: 20px;
    background: #fafafa;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 10px;
}

#signature-canvas {
    display: block;
    cursor: crosshair;
    background: white;
    border-radius: 4px;
}

.signature-actions {
    display: flex;
    gap: 12px;
}

.signature-actions button {
    flex: 1;
    padding: 12px 16px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: all 0.2s ease;
}

/* 重新签名按钮样式 */
.clear-signature-btn:hover {
    background: #e5e7eb !important;
    border-color: #9ca3af !important;
    transform: translateY(-1px);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

/* 禁用状态的复选框样式 */
.checkbox-container input[type="checkbox"]:disabled + .checkmark {
    background: #f3f4f6;
    border-color: #d1d5db;
    opacity: 0.5;
}

.checkbox-container input[type="checkbox"]:disabled ~ * {
    opacity: 0.5;
    pointer-events: none;
}

.checkbox-container:has(input[type="checkbox"]:disabled) {
    opacity: 0.5;
    cursor: not-allowed;
}

/* 滚动提示样式 */
.scroll-hint {
    color: #6b7280;
    font-size: 11px;
    text-align: center;
    margin: 10px 0;
    padding: 8px;
    background: #fef3c7;
    border-radius: 6px;
    border: 1px solid #f59e0b;
}





/* 错误提示 */
.error-message {
    color: #dc2626;
    font-size: 14px;
    margin-top: 4px;
    display: none;
}

.form-group.error input,
.form-group.error select,
.form-group.error textarea {
    border-color: #dc2626;
}

.form-group.error .error-message {
    display: block;
}

/* 多选项输入框错误状态样式 */
.checkbox-item input[type="text"].error {
    border-color: #e74c3c;
    box-shadow: 0 0 0 2px rgba(231, 76, 60, 0.2);
    background-color: #fef2f2;
}

/* 多选项输入框错误提示文本样式 */
.checkbox-input-error {
    color: #e74c3c;
    font-size: 12px;
    margin-top: 4px;
    display: block;
    padding-left: 4px;
    font-weight: 500;
}

/* 错误状态的复选框项目 */
.checkbox-item.has-input-error {
    background-color: #fef2f2;
    border-left: 3px solid #e74c3c;
    padding-left: 12px;
    margin-left: -15px;
    border-radius: 4px;
}

/* 必填项未选择的错误状态 */
.form-group.error .checkbox-group {
    border: 1px solid #e74c3c;
    border-radius: 8px;
    padding: 12px;
    background-color: #fef2f2;
}

/* 单选题错误状态 */
.form-group.error .radio-group,
.form-group.error .options-group {
    border: 1px solid #e74c3c;
    border-radius: 8px;
    padding: 12px;
    background-color: #fef2f2;
}

/* 输入框错误状态的通用样式 */
input.error,
textarea.error,
select.error {
    border-color: #e74c3c !important;
    box-shadow: 0 0 0 2px rgba(231, 76, 60, 0.2) !important;
    background-color: #fef2f2 !important;
}

/* 自定义问题（课前须知）错误状态 */
.custom-checkboxes.error {
    border: 1px solid #e74c3c;
    border-radius: 8px;
    padding: 12px;
    background-color: #fef2f2;
}

.custom-checkboxes.error .checkbox-container {
    background-color: rgba(231, 76, 60, 0.05);
    border-radius: 4px;
    padding: 8px;
    margin: 4px 0;
}

/* 课程安排问题尺寸容器错误状态 */
[id$="_size_container"].error {
    border: 1px solid #e74c3c;
    border-radius: 8px;
    padding: 12px;
    background-color: #fef2f2;
    margin-top: 10px;
}

[id$="_size_container"].error .form-group {
    background-color: rgba(231, 76, 60, 0.05);
    border-radius: 4px;
    padding: 8px;
    margin: 4px 0;
}

/* 多选项输入框错误提示文本样式 */
.checkbox-input-error {
    color: #e74c3c;
    font-size: 12px;
    margin-top: 4px;
    display: block;
    margin-left: 36px;
    font-weight: 500;
    line-height: 1.4;
}

/* 签名预览 */
.signature-preview {
    border: 2px solid #e5e7eb;
    border-radius: 8px;
    padding: 16px;
    background: #f9fafb;
    text-align: center;
    margin-top: 12px;
}

.signature-preview img {
    max-width: 100%;
    height: auto;
    border-radius: 4px;
}

.signature-preview .placeholder {
    color: #6b7280;
    font-style: italic;
}



/* 动画 */
@keyframes bounce {

    0%,
    20%,
    53%,
    80%,
    100% {
        transform: translate3d(0, 0, 0);
    }

    40%,
    43% {
        transform: translate3d(0, -8px, 0);
    }

    70% {
        transform: translate3d(0, -4px, 0);
    }

    90% {
        transform: translate3d(0, -2px, 0);
    }
}

.fade-in {
    animation: fadeIn 0.3s ease-in;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* *{
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
} */

/* 课程安排建议页面样式 */
.course-arrangement-content {
    background: #ffffff;
    border-radius: 16px;
    padding: 24px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    border: 1px solid #e5e7eb;
    margin-bottom: 20px;
}

.arrangement-header {
    text-align: center;
    margin-bottom: 28px;
    padding-bottom: 20px;
    border-bottom: 2px solid #f3f4f6;
    position: relative;
}

.arrangement-header::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 2px;
    background: linear-gradient(90deg, #2563eb, #3b82f6);
    border-radius: 1px;
}

.arrangement-header h3 {
    font-size: 16px;
    font-weight: 700;
    color: #1f2937;
    margin: 0;
    line-height: 1.4;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}

.course-info-card {
    background: linear-gradient(135deg, #f8fafc 0%, #eff6ff 100%);
    border: 2px solid #dbeafe;
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 24px;
    position: relative;
    overflow: hidden;
    box-shadow: 0 2px 12px rgba(37, 99, 235, 0.1);
}

.course-info-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #2563eb, #3b82f6, #06b6d4);
}

.course-info-card h4 {
    font-size: 18px;
    font-weight: 700;
    color: #1e40af;
    margin: 0 0 8px 0;
    display: flex;
    align-items: center;
    gap: 8px;
}

.course-info-card h4::before {
    content: '🎯';
    font-size: 16px;
}

.course-description {
    font-size: 14px;
    color: #6b7280;
    margin: 0 0 16px 0;
    font-style: italic;
    padding-left: 24px;
}

.course-details {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.detail-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    background: rgba(255, 255, 255, 0.7);
    border-radius: 8px;
    border: 1px solid rgba(37, 99, 235, 0.1);
    backdrop-filter: blur(4px);
}

.detail-item .label {
    font-size: 15px;
    font-weight: 600;
    color: #374151;
}

.detail-item .value {
    font-size: 15px;
    font-weight: 500;
    color: #1f2937;
}

.detail-item .value.highlight {
    font-size: 14px;
    font-weight: 700;
    color: #dc2626;
    background: linear-gradient(135deg, #fef2f2, #fee2e2);
    padding: 4px 12px;
    border-radius: 6px;
    border: 1px solid #fecaca;
    box-shadow: 0 2px 4px rgba(220, 38, 38, 0.1);
}

.gi-rental-section {
    background: #f8f9fa;
    border-radius: 12px;
    padding: 20px;
    border: 1px solid #dee2e6;
    position: relative;
}

/* .gi-rental-section::before {
    content: '👕';
    position: absolute;
    top: -10px;
    left: 20px;
    background: #f8f9fa;
    padding: 0 8px;
    font-size: 20px;
} */

.rental-info p {
    font-size: 13px;
    color: #495057;
    margin-bottom: 12px;
    line-height: 1.6;
}

.rental-info p:last-child {
    margin-bottom: 0;
    font-weight: 600;
    color: #343a40;
}

.rental-info strong {
    color: #dc2626;
    font-weight: 700;
    background: linear-gradient(135deg, #fef2f2, #fee2e2);
    padding: 2px 6px;
    border-radius: 4px;
    border: 1px solid #fecaca;
}

/* 课程安排问题的复选框组样式优化 */
.course-arrangement-content + .checkbox-group {
    margin-top: 20px;
}

.course-arrangement-content + .checkbox-group .checkbox-item {
    background: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
    border: 2px solid #e2e8f0;
    border-radius: 12px;
    padding: 16px 20px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.course-arrangement-content + .checkbox-group .checkbox-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(180deg, #2563eb, #3b82f6);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.course-arrangement-content + .checkbox-group .checkbox-item:hover::before,
.course-arrangement-content + .checkbox-group .checkbox-item.checked::before {
    opacity: 1;
}

.course-arrangement-content + .checkbox-group .checkbox-item label {
    font-size: 16px;
    font-weight: 500;
    color: #1f2937;
}

.course-arrangement-content + .checkbox-group .checkbox-item.checked {
    background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 100%);
    border-color: #2563eb;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.15);
}

.course-arrangement-content + .checkbox-group .checkbox-item.checked label {
    color: #1e40af;
    font-weight: 600;
}

/* 平板横屏布局按钮优化 */