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

:root {
    --primary-color: #47709B;
    --primary-dark: #365F7D;
    --primary-light: #C8DDE8;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --text-light: #9ca3af;
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --bg-tertiary: #f3f4f6;
    --border-color: #e5e7eb;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

/* 页面切换 */
.page {
    display: none;
    min-height: 100vh;
}

.page.active {
    display: block;
}

/* 容器 */
.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 40px 20px;
}

/* 封面页样式 */
.cover-container {
    max-width: 600px;
    margin: 60px auto;
    text-align: center;
    padding: 60px 40px;
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

.cover-badge {
    display: inline-block;
    background: var(--primary-light);
    color: var(--primary-color);
    padding: 8px 20px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 30px;
}

.cover-title {
    font-size: 42px;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 16px;
    letter-spacing: -0.5px;
}

.cover-subtitle {
    font-size: 20px;
    color: var(--text-secondary);
    margin-bottom: 40px;
}

.cover-divider {
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--primary-light));
    margin: 0 auto 40px;
    border-radius: 2px;
}

.cover-info {
    text-align: left;
    margin-bottom: 40px;
}

.cover-info p {
    margin-bottom: 16px;
    color: var(--text-primary);
}

.cover-info ul {
    margin-left: 24px;
    margin-bottom: 24px;
    color: var(--text-secondary);
}

.cover-info li {
    margin-bottom: 8px;
}

.cover-benefits {
    background: var(--bg-tertiary);
    padding: 20px;
    border-radius: var(--radius-md);
    line-height: 2;
}

.cover-time {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    color: var(--text-secondary);
    margin-bottom: 40px;
}

.time-icon {
    font-size: 20px;
}

.cover-actions {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 14px;
}

/* 按钮样式 */
.btn-primary {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 14px 32px;
    font-size: 16px;
    font-weight: 600;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn-primary:hover:not(:disabled) {
    background: var(--primary-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-primary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-primary.btn-large {
    padding: 18px 48px;
    font-size: 18px;
}

.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    padding: 14px 32px;
    font-size: 16px;
    font-weight: 500;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.2s;
}

.btn-secondary:hover {
    background: var(--bg-secondary);
    border-color: var(--text-light);
}

.btn-arrow {
    font-size: 20px;
}

/* 进度条 */
.progress-bar {
    width: 100%;
    height: 8px;
    background: var(--bg-tertiary);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 40px;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), #6B9CC0);
    transition: width 0.3s ease;
}

/* 表单样式 */
.section-title {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 12px;
}

.section-desc {
    color: var(--text-secondary);
    margin-bottom: 32px;
}

.user-info-form {
    background: var(--bg-primary);
    padding: 32px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.form-group {
    margin-bottom: 24px;
}

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

.form-group.half {
    flex: 1;
}

.form-group label {
    display: block;
    font-weight: 500;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 16px;
    transition: border-color 0.2s;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
}

.checkbox-label {
    display: flex !important;
    align-items: center;
    gap: 12px;
    cursor: pointer;
}

.checkbox-label input {
    width: auto;
}

/* 问卷头部 */
.questionnaire-header {
    margin-bottom: 32px;
}

.progress-section {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.progress-text {
    display: flex;
    justify-content: space-between;
    font-size: 14px;
}

#current-section {
    color: var(--primary-color);
    font-weight: 600;
}

.progress-count {
    color: var(--text-secondary);
}

/* 问题卡片 */
.question-card {
    background: var(--bg-primary);
    padding: 40px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    margin-bottom: 32px;
}

.section-header {
    margin-bottom: 32px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--border-color);
}

.section-name {
    font-size: 18px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 8px;
}

.section-desc {
    color: var(--text-secondary);
    font-size: 14px;
    margin: 0;
}

.question-text {
    font-size: 22px;
    font-weight: 600;
    line-height: 1.5;
    margin-bottom: 32px;
}

.options-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.option-item {
    display: flex;
    align-items: center;
    padding: 16px 20px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.2s;
}

.option-item:hover {
    border-color: var(--primary-color);
    background: var(--bg-secondary);
}

.option-item.selected {
    border-color: var(--primary-color);
    background: var(--primary-light);
}

.option-letter {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: var(--bg-tertiary);
    border-radius: 50%;
    font-weight: 600;
    margin-right: 16px;
    flex-shrink: 0;
}

.option-item.selected .option-letter {
    background: var(--primary-color);
    color: white;
}

.option-text {
    font-size: 16px;
}

/* 导航按钮 */
.nav-buttons {
    display: flex;
    justify-content: space-between;
    gap: 16px;
}

/* 加载页面 */
.loading-container {
    max-width: 500px;
    margin: 100px auto;
    text-align: center;
    padding: 60px 40px;
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

.loading-spinner {
    width: 60px;
    height: 60px;
    border: 4px solid var(--primary-light);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 32px;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.loading-container h3 {
    font-size: 24px;
    margin-bottom: 12px;
}

.loading-text {
    color: var(--text-secondary);
    margin-bottom: 40px;
}

.loading-steps {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.step {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 20px;
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    transition: all 0.3s;
}

.step.active {
    background: var(--primary-light);
    color: var(--primary-color);
}

.step.completed {
    background: #d1fae5;
    color: var(--success-color);
}

.step-icon {
    font-size: 20px;
}

/* 结果页面样式 */
.result-container {
    max-width: 900px;
}

.result-header-card {
    background: var(--bg-primary);
    padding: 40px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    text-align: center;
    margin-bottom: 32px;
}

.result-badge {
    display: inline-block;
    background: var(--primary-light);
    color: var(--primary-color);
    padding: 8px 20px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 20px;
}

.result-title {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 12px;
}

.result-subtitle {
    color: var(--text-secondary);
}

.metrics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    margin-bottom: 32px;
}

.metric-card {
    background: var(--bg-primary);
    padding: 28px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.metric-card.readiness {
    text-align: center;
}

.metric-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
}

.metric-header h3 {
    font-size: 18px;
    font-weight: 600;
}

.metric-icon {
    font-size: 24px;
}

.metric-value {
    font-size: 48px;
    font-weight: 800;
    color: var(--primary-color);
    margin-bottom: 8px;
}

.metric-label {
    color: var(--text-secondary);
    font-size: 14px;
    margin-bottom: 20px;
}

.readiness-bar {
    width: 100%;
    height: 12px;
    background: var(--bg-tertiary);
    border-radius: 6px;
    overflow: hidden;
    margin-bottom: 16px;
}

.readiness-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), #6B9CC0);
    transition: width 1s ease;
}

.readiness-level {
    font-weight: 600;
    padding: 8px 16px;
    border-radius: 20px;
    display: inline-block;
}

.readiness-level.high {
    background: #d1fae5;
    color: #059669;
}

.readiness-level.medium {
    background: #fef3c7;
    color: #d97706;
}

.readiness-level.low {
    background: #fee2e2;
    color: #dc2626;
}

.readiness-level.very-low {
    background: #fee2e2;
    color: #b91c1c;
}

.family-types {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.type-tag {
    background: var(--primary-light);
    color: var(--primary-color);
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 500;
}

.red-flags {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.red-flag-item {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-primary);
}

.flag-dot {
    color: var(--danger-color);
}

.no-data {
    color: var(--text-secondary);
    font-style: italic;
}

.no-data.good {
    color: var(--success-color);
    font-style: normal;
}

/* AI分析部分 */
.ai-analysis-section {
    background: var(--bg-primary);
    padding: 40px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    margin-bottom: 32px;
}

.section-header-with-icon {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 32px;
    padding-bottom: 20px;
    border-bottom: 2px solid var(--primary-light);
}

.section-icon {
    font-size: 28px;
}

.section-header-with-icon h2 {
    font-size: 24px;
    font-weight: 700;
}

.markdown-body {
    line-height: 1.8;
}

.markdown-body h1 {
    font-size: 24px;
    font-weight: 700;
    margin: 32px 0 20px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--primary-light);
}

.markdown-body h2 {
    font-size: 20px;
    font-weight: 700;
    margin: 28px 0 16px;
    color: var(--primary-color);
}

.markdown-body h3 {
    font-size: 18px;
    font-weight: 600;
    margin: 24px 0 12px;
}

.markdown-body p {
    margin-bottom: 16px;
    color: var(--text-secondary);
}

.markdown-body ul {
    margin-left: 24px;
    margin-bottom: 20px;
}

.markdown-body li {
    margin-bottom: 8px;
}

.markdown-body strong {
    color: var(--text-primary);
}

.markdown-body hr {
    border: none;
    border-top: 1px solid var(--border-color);
    margin: 32px 0;
}

/* 结果操作按钮 */
.result-actions {
    display: flex;
    justify-content: center;
    gap: 16px;
    margin-bottom: 32px;
}

.result-footer {
    background: var(--bg-tertiary);
    padding: 24px;
    border-radius: var(--radius-md);
    text-align: center;
    color: var(--text-secondary);
}

/* 加载和错误状态 */
.result-loading,
.result-error {
    max-width: 500px;
    margin: 100px auto;
    text-align: center;
    padding: 60px 40px;
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

.error-icon {
    font-size: 60px;
    margin-bottom: 20px;
}

.result-error h3 {
    font-size: 24px;
    margin-bottom: 12px;
}

.result-error p {
    color: var(--text-secondary);
    margin-bottom: 24px;
}

/* 响应式适配 */
@media (max-width: 640px) {
    .container {
        padding: 20px 16px;
    }

    .cover-container {
        margin: 20px auto;
        padding: 40px 24px;
    }

    .cover-title {
        font-size: 32px;
    }

    .cover-subtitle {
        font-size: 16px;
    }

    .question-card {
        padding: 24px;
    }

    .question-text {
        font-size: 18px;
    }

    .option-item {
        padding: 14px 16px;
    }

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

    .metrics-grid {
        grid-template-columns: 1fr;
    }

    .result-actions {
        flex-direction: column;
    }

    .btn-primary,
    .btn-secondary {
        width: 100%;
        justify-content: center;
    }
}

/* 打印样式 */
@media print {
    .nav-buttons,
    .result-actions,
    .result-footer {
        display: none;
    }

    .page {
        display: block !important;
    }

    .metric-card,
    .ai-analysis-section {
        break-inside: avoid;
    }
}