/* ==========================================
   食物相克工具专用样式
   依赖: tools-common.css (提供基础布局和info-card样式)
   ========================================== */

/* ==========================================
   1. 搜索功能区域
   ========================================== */
.search-section {
    margin-bottom: 30px;
}

.search-box {
    display: flex;
    gap: 12px;
    margin-bottom: 16px;
}

.search-input {
    flex: 1;
    padding: 12px 16px;
    font-size: 1rem;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.search-input:focus {
    outline: none;
    border-color: #4CAF50;
    box-shadow: 0 0 0 3px rgba(76, 175, 80, 0.1);
}

.search-btn {
    padding: 12px 32px;
    background: linear-gradient(135deg, #4CAF50 0%, #45a049 100%);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    white-space: nowrap;
}

.search-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(76, 175, 80, 0.3);
}

.search-btn:active {
    transform: translateY(0);
}

/* 分类标签 */
.search-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.tag {
    padding: 8px 16px;
    background: #f5f5f5;
    color: #666;
    border-radius: 20px;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.tag:hover {
    background: #e8f5e9;
    color: #4CAF50;
    border-color: #4CAF50;
}

.tag.active {
    background: #4CAF50;
    color: white;
    border-color: #4CAF50;
}

/* ==========================================
   2. 食物选择区域
   ========================================== */
.food-selection {
    background: #f8f9fa;
    padding: 30px;
    border-radius: 16px;
    margin-bottom: 30px;
}

.food-input-group {
    display: flex;
    align-items: flex-end;
    gap: 20px;
    margin-bottom: 20px;
}

.food-input {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.food-input label {
    font-weight: 600;
    color: #333;
    font-size: 0.95rem;
}

.form-input {
    padding: 12px 16px;
    font-size: 1rem;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.form-input:focus {
    outline: none;
    border-color: #4CAF50;
    box-shadow: 0 0 0 3px rgba(76, 175, 80, 0.1);
}

.compatibility-icon {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: white;
    border-radius: 50%;
    color: #4CAF50;
    font-size: 1.2rem;
    margin-bottom: 2px;
}

.btn-primary {
    width: 100%;
    padding: 14px 32px;
    background: linear-gradient(135deg, #4CAF50 0%, #45a049 100%);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(76, 175, 80, 0.3);
}

.btn-primary:active {
    transform: translateY(0);
}

/* ==========================================
   3. 查询结果区域
   ========================================== */
.result-section {
    margin-bottom: 30px;
}

.section-title {
    font-size: 1.4rem;
    font-weight: 700;
    color: #333;
    margin-bottom: 20px;
    padding-left: 12px;
    border-left: 4px solid #4CAF50;
}

.result-content {
    background: white;
    padding: 30px;
    border-radius: 16px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.compatibility-result {
    text-align: center;
}

.result-icon {
    font-size: 4rem;
    margin-bottom: 20px;
}

.result-icon.compatible {
    color: #4CAF50;
}

.result-icon.incompatible {
    color: #f44336;
}

.result-icon.neutral {
    color: #FF9800;
}

.result-title {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 16px;
}

.result-title.compatible {
    color: #4CAF50;
}

.result-title.incompatible {
    color: #f44336;
}

.result-title.neutral {
    color: #FF9800;
}

.result-description {
    font-size: 1.1rem;
    color: #666;
    line-height: 1.8;
}

/* ==========================================
   4. 常见搭配区域
   ========================================== */
.common-combinations {
    margin-bottom: 30px;
}

.combinations-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.combination-card {
    background: white;
    border-radius: 12px;
    padding: 20px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.combination-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
}

.combination-card.compatible {
    border-color: #4CAF50;
}

.combination-card.incompatible {
    border-color: #f44336;
}

.combination-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid #e0e0e0;
}

.combination-header h4 {
    font-size: 1.1rem;
    font-weight: 700;
    color: #333;
    margin: 0;
}

.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
}

.status-badge.good {
    background: #e8f5e9;
    color: #4CAF50;
}

.status-badge.bad {
    background: #ffebee;
    color: #f44336;
}

.combination-content {
    margin-top: 16px;
}

.food-pair {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin-bottom: 16px;
}

.food-item {
    font-size: 1.1rem;
    font-weight: 600;
    color: #333;
    padding: 8px 16px;
    background: #f5f5f5;
    border-radius: 8px;
}

.compatibility-arrow {
    font-size: 1.3rem;
    font-weight: 700;
    color: #999;
}

.explanation {
    font-size: 0.95rem;
    color: #666;
    line-height: 1.6;
    margin: 0;
}

/* ==========================================
   5. 营养知识区域
   ========================================== */
.nutrition-knowledge {
    margin-bottom: 30px;
}

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

.knowledge-card {
    background: white;
    padding: 24px;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.knowledge-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
}

.knowledge-card h4 {
    font-size: 1.1rem;
    font-weight: 700;
    color: #333;
    margin: 0 0 16px 0;
    padding-bottom: 12px;
    border-bottom: 2px solid #4CAF50;
}

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

.knowledge-card li {
    font-size: 0.95rem;
    color: #666;
    line-height: 1.8;
    padding: 8px 0;
    padding-left: 20px;
    position: relative;
}

.knowledge-card li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #4CAF50;
    font-weight: 700;
}

/* ==========================================
   6. 响应式布局
   ========================================== */

/* 平板端 (768px - 1024px) */
@media (max-width: 1024px) {
    .combinations-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .knowledge-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* 手机端 (< 768px) */
@media (max-width: 768px) {
    .search-box {
        flex-direction: column;
    }

    .search-btn {
        width: 100%;
        padding: 14px 32px;
    }

    .food-selection {
        padding: 20px;
    }

    .food-input-group {
        flex-direction: column;
        align-items: stretch;
        gap: 16px;
    }

    .compatibility-icon {
        align-self: center;
        margin-bottom: 0;
    }

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

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

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

    .result-content {
        padding: 20px;
    }

    .result-icon {
        font-size: 3rem;
    }

    .result-title {
        font-size: 1.4rem;
    }

    .result-description {
        font-size: 1rem;
    }
}

/* 小屏手机 (< 480px) */
@media (max-width: 480px) {
    .search-tags {
        gap: 8px;
    }

    .tag {
        padding: 6px 12px;
        font-size: 0.85rem;
    }

    .food-selection {
        padding: 16px;
    }

    .food-item {
        font-size: 1rem;
        padding: 6px 12px;
    }

    .combination-card {
        padding: 16px;
    }

    .knowledge-card {
        padding: 20px;
    }
}