/* ============================================
   孕期同房姿势指导工具 - 专用样式
   基于开发规范 v2.3
   依赖: tools-common.css（公共样式）
   ============================================ */

/* ========== 孕期阶段选择区域 ========== */
.pregnancy-stage {
    margin-bottom: 30px;
}

.section-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: #333;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.section-title i {
    color: #4285f4;
    font-size: 1.3rem;
}

/* 孕期阶段按钮 */
.stage-tabs {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
    justify-content: center;
}

.tab-btn {
    flex: 1;
    min-width: 150px;
    padding: 15px 25px;
    background: #fff;
    border: 2px solid #e0e0e0;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 500;
    color: #666;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.tab-btn i {
    font-size: 1.2rem;
}

.tab-btn:hover {
    background: #f8f9fa;
    border-color: #4285f4;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(66, 133, 244, 0.15);
}

.tab-btn.active {
    background: linear-gradient(135deg, #4285f4 0%, #5a9bf8 100%);
    border-color: #4285f4;
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(66, 133, 244, 0.3);
}

.tab-btn.active i {
    color: #fff;
}

/* ========== 安全姿势展示区域 ========== */
.positions-section {
    margin-bottom: 30px;
}

.positions-container {
    display: grid;
    gap: 25px;
    margin-top: 20px;
}

/* 姿势卡片 */
.position-card {
    background: #fff;
    border-radius: 16px;
    padding: 25px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    border: 1px solid #e9ecef;
    transition: all 0.3s ease;
    display: none; /* 默认隐藏，通过 JS 控制显示 */
}

.position-card.active {
    display: block;
    animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.position-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.12);
}

/* 姿势卡片头部 */
.position-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 2px solid #e9ecef;
}

.position-header h4 {
    font-size: 1.3rem;
    font-weight: 600;
    color: #333;
    margin: 0;
    display: flex;
    align-items: center;
    gap: 10px;
}

.position-header h4 i {
    color: #4285f4;
    font-size: 1.2rem;
}

/* 安全等级标签 */
.safety-level {
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
}

.safety-level.safe {
    background: linear-gradient(135deg, #34a853 0%, #46b964 100%);
    color: #fff;
}

.safety-level.caution {
    background: linear-gradient(135deg, #fbbc04 0%, #fcc534 100%);
    color: #333;
}

/* 姿势内容 */
.position-content {
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: 25px;
}

/* 姿势图标区域 */
.position-image {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #f5f7fa 0%, #e9ecef 100%);
    border-radius: 12px;
    padding: 30px 20px;
    border: 2px dashed #dee2e6;
}

.position-image i {
    font-size: 4rem;
    color: #4285f4;
    margin-bottom: 10px;
}

.position-image p {
    font-size: 0.9rem;
    color: #666;
    margin: 0;
    text-align: center;
}

/* 姿势信息 */
.position-info h5 {
    font-size: 1rem;
    font-weight: 600;
    color: #333;
    margin-top: 15px;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.position-info h5:first-child {
    margin-top: 0;
}

.position-info h5 i {
    color: #4285f4;
    font-size: 0.9rem;
}

.position-info p {
    color: #666;
    line-height: 1.6;
    margin: 0 0 10px 0;
    padding-left: 24px;
}

.position-info ul {
    list-style: none;
    padding: 0;
    margin: 0 0 10px 0;
}

.position-info li {
    padding: 8px 12px 8px 24px;
    color: #555;
    line-height: 1.5;
    position: relative;
}

.position-info li::before {
    content: "•";
    position: absolute;
    left: 12px;
    color: #4285f4;
    font-weight: bold;
}

/* ========== 孕期指导网格 ========== */
.pregnancy-guidance {
    margin-bottom: 30px;
}

.guidance-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.guidance-card {
    background: #fff;
    border-radius: 12px;
    padding: 25px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    border: 1px solid #e9ecef;
    transition: all 0.3s ease;
}

.guidance-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.12);
}

.guidance-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #4285f4 0%, #5a9bf8 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 15px;
}

.guidance-icon i {
    font-size: 1.8rem;
    color: #fff;
}

.guidance-card h4 {
    font-size: 1.1rem;
    font-weight: 600;
    color: #333;
    text-align: center;
    margin-bottom: 15px;
}

.guidance-card ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.guidance-card li {
    padding: 8px 0 8px 20px;
    color: #666;
    line-height: 1.5;
    position: relative;
    font-size: 0.95rem;
}

.guidance-card li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #34a853;
    font-weight: bold;
}

/* ========== 禁忌情况区域 ========== */
.contraindications {
    margin-bottom: 30px;
}

.contraindications-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.contraindication-card {
    background: #fff;
    border-radius: 12px;
    padding: 25px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    border-left: 4px solid #ea4335;
    transition: all 0.3s ease;
}

.contraindication-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.12);
}

.contraindication-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #ea4335 0%, #f25645 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 15px;
}

.contraindication-icon i {
    font-size: 1.8rem;
    color: #fff;
}

.contraindication-card h4 {
    font-size: 1.1rem;
    font-weight: 600;
    color: #ea4335;
    text-align: center;
    margin-bottom: 15px;
}

.contraindication-card ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.contraindication-card li {
    padding: 8px 0 8px 20px;
    color: #666;
    line-height: 1.5;
    position: relative;
    font-size: 0.95rem;
}

.contraindication-card li::before {
    content: "✗";
    position: absolute;
    left: 0;
    color: #ea4335;
    font-weight: bold;
}

/* ========== 健康提醒区域 ========== */
.health-reminders {
    margin-bottom: 30px;
}

.reminders-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.reminder-card {
    background: linear-gradient(135deg, #fff9e6 0%, #fff5cc 100%);
    border-radius: 12px;
    padding: 25px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    border: 1px solid #ffe69c;
    transition: all 0.3s ease;
}

.reminder-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.12);
}

.reminder-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #fbbc04 0%, #fcc534 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 15px;
}

.reminder-icon i {
    font-size: 1.8rem;
    color: #fff;
}

.reminder-card h4 {
    font-size: 1.1rem;
    font-weight: 600;
    color: #333;
    text-align: center;
    margin-bottom: 12px;
}

.reminder-card p {
    color: #666;
    line-height: 1.6;
    margin: 0;
    text-align: center;
    font-size: 0.95rem;
}

/* ========== 响应式设计 ========== */

/* 平板设备 */
@media (max-width: 1024px) {
    .position-content {
        grid-template-columns: 150px 1fr;
        gap: 20px;
    }

    .position-image i {
        font-size: 3rem;
    }

    .guidance-grid,
    .contraindications-grid,
    .reminders-grid {
        grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    }
}

/* 手机设备 */
@media (max-width: 768px) {
    .stage-tabs {
        flex-direction: column;
        gap: 10px;
    }

    .tab-btn {
        min-width: 100%;
    }

    .position-content {
        grid-template-columns: 1fr;
        gap: 15px;
    }

    .position-image {
        padding: 20px 15px;
    }

    .position-image i {
        font-size: 2.5rem;
    }

    .guidance-grid,
    .contraindications-grid,
    .reminders-grid {
        grid-template-columns: 1fr;
    }

    .section-title {
        font-size: 1.3rem;
    }

    .position-card {
        padding: 20px;
    }

    .guidance-card,
    .contraindication-card,
    .reminder-card {
        padding: 20px;
    }
}

/* 超小屏幕 */
@media (max-width: 480px) {
    .position-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }

    .position-header h4 {
        font-size: 1.1rem;
    }

    .safety-level {
        align-self: flex-start;
    }

    .section-title {
        font-size: 1.2rem;
    }

    .guidance-icon,
    .contraindication-icon,
    .reminder-icon {
        width: 50px;
        height: 50px;
    }

    .guidance-icon i,
    .contraindication-icon i,
    .reminder-icon i {
        font-size: 1.5rem;
    }
}