:root {
            --primary-yellow: #FFD100;
            --dark-yellow: #FFB800;
            --light-yellow: #FFFBEB;
            --orange: #FF9500;
            --red: #FF5722;
            --green: #4CAF50;
            --blue: #2196F3;
            --purple: #9C27B0;
            --pink: #FF4081;
            --white: #FFFFFF;
            --text-dark: #2D3436;
            --text-gray: #666666;
            --light-gray: #F8F9FA;
            --border-gray: rgba(0, 0, 0, 0.05);
            --radius-lg: 20px;
            --radius-md: 15px;
            --radius-sm: 10px;
            --transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
            --card-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
            --hover-shadow: 0 20px 40px rgba(0, 0, 0, 0.12);
            --orange-gradient: linear-gradient(135deg, #FFD100 0%, #FF9500 100%);
            --yellow-gradient: linear-gradient(135deg, #FFF9E6 0%, #FFEECC 100%);
            --red-gradient: linear-gradient(135deg, #FFE0E0 0%, #FFCCCC 100%);
            --green-gradient: linear-gradient(135deg, #E8F5E9 0%, #C8E6C9 100%);
            --blue-gradient: linear-gradient(135deg, #E3F2FD 0%, #BBDEFB 100%);
            --purple-gradient: linear-gradient(135deg, #F3E5F5 0%, #E1BEE7 100%);
            --food-tag-gradient: linear-gradient(135deg, #FFD100 0%, #FFFBEB 100%);
            --food-tag-hover: linear-gradient(135deg, #FFB800 0%, #FFD100 100%);
        }
        
        body {
            font-family: 'Noto Sans SC', sans-serif;
            color: #333;
            line-height: 1.6;
            background-image: url('beijing.jpg'); 
            background-size: cover;
            background-attachment: fixed;
            background-position: center;
            background-color: var(--light-yellow);
            border: 15px solid var(--light-yellow);
            min-height: 100vh;
            box-sizing: border-box;
            margin: 0;
        }

        body::before {
            content: '';
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(255, 251, 235, 0.7);
            z-index: -1;
        }

       .navbar {
    padding: 0.8rem 0;
    background-color: #fff !important;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.navbar-brand {
    font-size: 1.5rem;
    font-weight: 700;
    color: #FF8C00 !important;
    display: flex;
    align-items: center;
    gap: 8px;
    margin-right: 1.5rem;
}

/* 左侧主导航按钮 */
.navbar-nav .nav-btn {
    min-width: 90px;
    padding: 8px 16px;
    margin: 0 2px;
    border-radius: 8px;
    color: #333 !important;
    font-weight: 500;
    text-align: center;
    border: 1px solid #E0E0E0;
    background-color: transparent;
    transition: all 0.3s ease;
}

.navbar-nav .nav-btn:hover {
    border-color: #FFC107;
    color: #FF8C00 !important;
    background-color: rgba(255, 193, 7, 0.05);
}

/* 上传菜谱按钮（突出样式） */
.upload-btn {
    min-width: 110px;
    padding: 8px 16px;
    border-radius: 8px;
    background-color: #FF8C00 !important;
    color: #fff !important;
    font-weight: 600;
    text-align: center;
    box-shadow: 0 2px 6px rgba(255, 140, 0, 0.2);
    transition: all 0.3s ease;
}

.upload-btn:hover {
    background-color: #FF9800 !important;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(255, 140, 0, 0.3);
}

/* 右侧功能按钮（我的菜谱/我的收藏） */
.user-btn {
    min-width: 90px;
    padding: 8px 16px;
    border-radius: 8px;
    background-color: rgba(255, 193, 7, 0.1) !important;
    color: #FF8C00 !important;
    font-weight: 500;
    text-align: center;
    transition: all 0.3s ease;
}

.user-btn:hover {
    background-color: rgba(255, 193, 7, 0.2) !important;
    transform: translateY(-2px);
    box-shadow: 0 2px 8px rgba(255, 193, 7, 0.2);
}

/* 登录按钮样式 */
.login-btn {
    min-width: 80px;
    padding: 8px 16px;
    border-radius: 8px;
    color: #FF8C00 !important;
    font-weight: 500;
    text-align: center;
    transition: all 0.3s ease;
}

.login-btn:hover {
    background-color: rgba(255, 193, 7, 0.1) !important;
}

/* 修复li标签的默认样式 */
.nav-item {
    list-style: none;
    margin: 0;
    padding: 0;
}

/* 右侧功能区间距优化 */
.d-flex.align-items-center.gap-2 {
    gap: 8px !important; /* 按钮之间的间距 */
}

/* 响应式适配 */
@media (max-width: 992px) {
    .navbar-nav, .d-flex.align-items-center {
        width: 100%;
        flex-direction: column;
        align-items: flex-start !important;
    }
    .nav-item, .user-btn, .login-btn {
        width: 100%;
        margin: 2px 0;
    }
}
/* ========== 2. 核心操作按钮：上传菜谱（主色填充） ========== */
.upload-btn {
  min-width: 110px;
  padding: 8px 16px;
  border-radius: 8px;
  background-color: #FF8C00 !important; /* 橙黄色主色 */
  color: #fff !important;
  font-weight: 600;
  text-align: center;
  box-shadow: 0 2px 6px rgba(255, 140, 0, 0.2);
  transition: all 0.3s ease;
}

.upload-btn:hover {
  background-color: #FF9800 !important;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(255, 140, 0, 0.3);
}

.upload-btn:active {
  transform: translateY(0);
  box-shadow: 0 2px 4px rgba(255, 140, 0, 0.2);
}
/* 统一右侧按钮的内边距和行高 */
.navbar-right .nav-link {
  padding: 8px 16px; /* 统一上下左右内边距 */
  line-height: 1.4; /* 统一行高 */
  display: inline-flex; /* 保证图标和文字在按钮内居中 */
  align-items: center;
  gap: 4px; /* 图标和文字的间距 */
}
/* ========== 3. 功能按钮：我的菜谱/我的收藏/登录（浅黄背景） ========== */
.nav-btn {
  min-width: 90px;
  padding: 8px 16px;
  border-radius: 8px;
  background-color: rgba(255, 193, 7, 0.1) !important; /* 淡黄背景 */
  color: #FF8C00 !important; /* 橙黄文字 */
  font-weight: 500;
  text-align: center;
  transition: all 0.3s ease;
}

.nav-btn:hover {
  background-color: rgba(255, 193, 7, 0.2) !important;
  transform: translateY(-2px);
  box-shadow: 0 2px 8px rgba(255, 193, 7, 0.2);
}

/* ========== 4. 登录/用户信息区域特殊处理 ========== */
#user-info {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 10px;
}

#current-username {
  font-weight: 600;
  color: #333;
}

#logout-btn {
  padding: 4px 12px;
  font-size: 0.85rem;
}

/* 响应式适配：小屏幕折叠后样式 */
@media (max-width: 992px) {
  .navbar-nav {
    gap: 5px;
  }
  
  .navbar-nav .nav-link, .upload-btn, .nav-btn {
    min-width: auto;
    width: 100%;
    margin: 2px 0;
  }
}

        /* 头部区域增强 */
        .hero-section {
            background: linear-gradient(135deg, rgba(255,255,255,0.95) 0%, rgba(255,251,235,0.95) 100%);
            padding: 4rem 0;
            margin-bottom: 1.5rem;
            border-radius: 0 0 50px 50px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
        }

        .hero-bg {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-image: url('https://p26-flow-imagex-download-sign.byteimg.com/tos-cn-i-a9rns2rl98/ff162d952f074b7dad99ce4e9f01af85.png~tplv-a9rns2rl98-24-95-exif:960:960.png');
            background-size: cover;
            background-position: center;
            opacity: 0.08;
            z-index: 0;
        }

        .hero-content {
            position: relative;
            z-index: 1;
            text-align: center;
        }

        .hero-content h1 {
            font-weight: 900;
            font-size: 3.5rem;
            margin-bottom: 1.5rem;
            background: linear-gradient(135deg, #FF9500 0%, #FFD100 100%);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            text-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
        }

        .hero-content p {
            font-size: 1.2rem;
            color: var(--text-gray);
            max-width: 800px;
            margin: 0 auto 2rem;
            line-height: 1.8;
        }

        /* 搜索区域样式增强 */
        .search-wrapper {
            display: flex;
            justify-content: center;
            align-items: center;
            margin: 2rem auto;
            max-width: 800px;
            width: 100%;
            gap: 12px;
            padding: 0 1rem;
        }

        .search-container {
            position: relative;
            width: 100%;
            max-width: 600px;
        }

        #search-input {
            width: 100%;
            padding: 18px 18px 18px 55px;
            border-radius: 50px;
            border: 3px solid var(--primary-yellow);
            font-size: 1.1rem;
            box-shadow: 0 8px 20px rgba(0,0,0,0.08);
            transition: all 0.3s ease;
            outline: none;
            background-color: rgba(255, 255, 255, 0.9);
        }

        #search-input:focus {
            border-color: var(--orange);
            box-shadow: 0 8px 25px rgba(255,209,0,0.3);
            background-color: #fff;
            transform: translateY(-2px);
        }

        .search-container .bi-search {
            position: absolute;
            left: 22px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--orange);
            font-size: 1.3rem;
            transition: all 0.3s;
            pointer-events: none;
        }

        #search-btn {
            background: var(--orange-gradient);
            color: white;
            border: none;
            border-radius: 50px;
            padding: 18px 40px;
            font-size: 1.1rem;
            font-weight: 700;
            cursor: pointer;
            box-shadow: 0 8px 20px rgba(255,209,0,0.3);
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
            white-space: nowrap;
        }

        #search-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 25px rgba(255,209,0,0.4);
        }

        #search-btn .shine-effect {
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: rgba(255,255,255,0.3);
            transform: rotate(30deg);
            transition: all 0.6s ease;
        }

        #search-btn:hover .shine-effect {
            left: 120%;
        }

        /* 热门标签增强 */
        .trending-tags {
            text-align: center;
            margin-top: 1.5rem;
        }

        .trending-tags span {
            font-weight: 500;
            color: var(--text-gray);
            margin-right: 10px;
        }

        .trending-tags a {
            display: inline-block;
            margin: 0 0.5rem 0.5rem;
            padding: 0.7rem 1.5rem;
            border-radius: 30px;
            color: #333;
            text-decoration: none;
            font-size: 0.95rem;
            font-weight: 500;
            transition: all 0.3s ease;
            background-color: rgba(255,209,0,0.1);
            border: 2px solid transparent;
        }

        .trending-tags a:hover {
            background: var(--orange-gradient);
            color: white;
            transform: translateY(-3px);
            box-shadow: 0 6px 15px rgba(255,209,0,0.2);
            border-color: var(--primary-yellow);
        }

        /* 自定义提示框样式增强 */
        .custom-alert {
            position: fixed;
            top: 20px;
            left: 50%;
            transform: translateX(-50%);
            padding: 18px 30px;
            border-radius: 15px;
            background: var(--orange-gradient);
            color: white;
            font-size: 1.05rem;
            font-weight: 600;
            box-shadow: 0 8px 25px rgba(255,209,0,0.4);
            z-index: 9999;
            opacity: 0;
            transition: all 0.3s ease;
            border-left: 5px solid #FF8C00;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .custom-alert i {
            font-size: 1.2rem;
        }

        .custom-alert.show {
            opacity: 1;
            top: 30px;
        }

        /* 波纹动画 */
        @keyframes ripple {
            to {
                transform: translate(-50%, -50%) scale(3);
                opacity: 0;
            }
        }

        /* 主容器 - 2.5:1 并排布局 */
        .main-container {
            padding: 1rem 0.5rem;
            max-width: 1400px;
            margin: 0 auto;
            width: 100%;
            display: flex;
            gap: 2rem; /* 调整并排间距 */
        }

        /* 2.5:1 比例分配 - 缩小搜索结果区域 */
        .recipe-section {
            flex: 2; /* 从2.5调整为2，缩小尺寸 */
            width: calc(2 / 3 * 100%);
            margin-top: -1rem;
        }

        .sidebar {
            flex: 1; /* 保持1份 */
            width: calc(1 / 3 * 100%);
            margin-top: 3.5rem;
        }

        /* 精选推荐标题增强 */
        .section-title {
            font-weight: 900;
            margin-bottom: 0.5rem;
            display: inline-block;
            position: relative;
            color: var(--text-dark);
            font-size: 2rem;
            padding-bottom: 10px;
        }

        .section-title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 80px;
            height: 4px;
            background: var(--orange-gradient);
            border-radius: 4px;
        }

        .section-subtitle {
            color: var(--text-gray);
            font-size: 1rem;
            margin-bottom: 2rem;
            display: block;
        }

        /* 食材标签卡片化（黄白渐变） */
        .food-tag-card {
            background: var(--white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            margin-bottom: 2.5rem;
            box-shadow: var(--card-shadow);
            border: 1px solid rgba(255, 209, 0, 0.1);
            transition: var(--transition);
        }

        .food-tag-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--hover-shadow);
        }

        .food-tag-header {
            padding: 1.5rem;
            font-weight: 700;
            font-size: 1.2rem;
            display: flex;
            align-items: center;
            gap: 12px;
            background: var(--food-tag-gradient);
            border-bottom: 4px solid var(--primary-yellow);
            position: relative;
            overflow: hidden;
        }

        .food-tag-header::after {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 80px;
            height: 80px;
            background: rgba(255,255,255,0.2);
            border-radius: 50%;
            transform: translate(40%, -40%);
        }

        .food-tag-header i {
            color: var(--primary-yellow);
            font-size: 1.6rem;
            filter: drop-shadow(0 2px 2px rgba(0,0,0,0.1));
        }

        .food-tag-body {
            padding: 1.8rem;
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        /* 食材标签样式（黄白搭配） */
        .food-tag-item {
            padding: 8px 20px;
            border-radius: 30px;
            font-weight: 600;
            font-size: 0.95rem;
            cursor: pointer;
            transition: all 0.3s;
            border: 2px solid var(--primary-yellow);
            background: var(--food-tag-gradient);
            color: var(--text-dark);
        }

        .food-tag-item:hover {
            background: var(--food-tag-hover);
            color: white;
            transform: translateY(-2px);
            box-shadow: 0 6px 15px rgba(255,209,0,0.2);
        }

        /* 食谱卡片容器 - 缩小尺寸，调整间距 */
        .recipe-container {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 15px; /* 缩小间距 */
            margin: 0;
            padding: 0;
            max-width: 100%; /* 限制最大宽度 */
        }

        /* 单个食谱卡片 - 缩小尺寸 */
        .recipe-container .col {
            padding: 0;
            margin: 0;
        }

        .card {
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all 0.4s;
            border: none;
            box-shadow: var(--card-shadow);
            position: relative;
            height: 100%;
            cursor: pointer;
            background: white;
        }

        .card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 5px;
            background: var(--orange-gradient);
        }

        .card:hover {
            transform: translateY(-8px);
            box-shadow: var(--hover-shadow);
        }

        .card-img-top {
            height: 180px; /* 缩小图片高度 */
            object-fit: cover;
            transition: all 0.5s;
        }

        .card:hover .card-img-top {
            transform: scale(1.05);
        }

        .card-body {
            padding: 1.2rem; /* 缩小内边距 */
        }

        .card-title {
            color: var(--text-dark);
            font-size: 1.1rem; /* 缩小字体 */
            font-weight: 700;
            margin-bottom: 0.8rem;
            transition: all 0.3s;
        }

        .card:hover .card-title {
            color: var(--orange);
        }

        .card-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-top: 1rem;
            font-size: 0.85rem; /* 缩小字体 */
            color: var(--text-gray);
        }

        .card-rating {
            display: flex;
            align-items: center;
            gap: 5px;
            color: var(--primary-yellow);
        }

        .card-time {
            display: flex;
            align-items: center;
            gap: 5px;
        }

        /* 移除滑动按钮 */
        .slider-btn {
            display: none !important;
        }

        /* 侧边栏卡片统一美化样式增强 */
        .sidebar-card {
            background: var(--white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            margin-bottom: 2.5rem;
            box-shadow: var(--card-shadow);
            border: 1px solid rgba(255, 209, 0, 0.1);
            transition: var(--transition);
        }

        .sidebar-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--hover-shadow);
        }

        .sidebar-card-header {
            padding: 1.5rem;
            font-weight: 700;
            font-size: 1.2rem;
            display: flex;
            align-items: center;
            gap: 12px;
            border-bottom: 4px solid var(--primary-yellow);
            position: relative;
            overflow: hidden;
        }

        .sidebar-card-header::after {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 80px;
            height: 80px;
            background: rgba(255,255,255,0.2);
            border-radius: 50%;
            transform: translate(40%, -40%);
        }

        /* 不同类型卡片的头部渐变 */
        .sidebar-card-header.yellow {
            background: var(--yellow-gradient);
        }

        .sidebar-card-header.red {
            background: var(--red-gradient);
            border-bottom-color: var(--red);
        }

        .sidebar-card-header.red i {
            color: var(--red);
        }

        /* BMI卡片为黄色系 */
        .sidebar-card-header.green {
            background: var(--yellow-gradient);
            border-bottom-color: var(--primary-yellow);
        }

        .sidebar-card-header.green i {
            color: var(--primary-yellow);
        }

        .sidebar-card-header.blue {
            background: var(--blue-gradient);
            border-bottom-color: var(--blue);
        }

        .sidebar-card-header.blue i {
            color: var(--blue);
        }

        .sidebar-card-body {
            padding: 1.8rem;
        }

        /* AI智能大厨样式增强 */
        #chat-history {
            height: 280px;
            overflow-y: auto;
            margin-bottom: 1.5rem;
            padding: 1.2rem;
            background: var(--light-gray);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-gray);
            box-shadow: inset 0 2px 8px rgba(0,0,0,0.05);
        }

        .ai-input-group {
            display: flex;
            gap: 12px;
        }

        #ai-input {
            flex: 1;
            border-radius: var(--radius-sm);
            padding: 15px 18px;
            font-size: 1rem;
            border: 2px solid rgba(255, 209, 0, 0.2);
            transition: var(--transition);
            outline: none;
            border-radius: 50px;
        }

        #ai-input:focus {
            border-color: var(--primary-yellow);
            box-shadow: 0 0 0 4px rgba(255, 209, 0, 0.1);
            transform: translateY(-2px);
        }

        /* 调整发送按钮大小 */
        #ai-btn {
            background: var(--orange-gradient);
            border: none;
            color: var(--white);
            border-radius: 50px;
            padding: 0 20px;
            font-size: 0.95rem;
            font-weight: 700;
            height: 50px;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 8px;
            box-shadow: 0 4px 15px rgba(255,209,0,0.2);
        }

        #ai-btn i {
            font-size: 1.1rem;
        }

        #ai-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 20px rgba(255, 149, 0, 0.3);
        }

        /* 消息样式增强 */
        .message {
            padding: 15px 20px;
            border-radius: 20px;
            margin-bottom: 15px;
            max-width: 85%;
            word-wrap: break-word;
            animation: fadeIn 0.3s ease;
            box-shadow: 0 3px 10px rgba(0,0,0,0.05);
        }

        .message-user {
            background: var(--orange-gradient);
            color: white;
            margin-left: auto;
            border-bottom-right-radius: 5px;
        }

        .message-ai {
            background: white;
            color: var(--text-dark);
            margin-right: auto;
            border-bottom-left-radius: 5px;
            border: 1px solid rgba(255, 209, 0, 0.1);
        }

        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(10px); }
            to { opacity: 1; transform: translateY(0); }
        }

        /* BMI计算器样式增强 - 黄色系 */
        #bmi-height, #bmi-weight {
            width: 100%;
            margin-bottom: 1.5rem;
            border-radius: 50px;
            padding: 15px 20px;
            font-size: 1rem;
            border: 2px solid rgba(255, 209, 0, 0.2);
            transition: var(--transition);
            outline: none;
        }

        #bmi-height:focus, #bmi-weight:focus {
            border-color: var(--primary-yellow);
            box-shadow: 0 0 0 4px rgba(255, 209, 0, 0.1);
            transform: translateY(-2px);
        }

        #bmi-btn {
            width: 100%;
            background: white;
            border: 3px solid var(--primary-yellow);
            color: var(--text-dark);
            border-radius: 50px;
            padding: 15px 0;
            font-size: 1.1rem;
            font-weight: 700;
            transition: var(--transition);
            margin-bottom: 1.5rem;
            box-shadow: 0 4px 15px rgba(0,0,0,0.05);
        }

        #bmi-btn:hover {
            background: var(--orange-gradient);
            border-color: transparent;
            color: white;
            transform: translateY(-3px);
            box-shadow: 0 8px 20px rgba(255, 149, 0, 0.3);
        }

        #bmi-result {
            text-align: center;
            padding: 2rem;
            background: var(--light-yellow);
            border-radius: var(--radius-lg);
            border: 1px solid rgba(255, 209, 0, 0.1);
            box-shadow: inset 0 2px 8px rgba(0,0,0,0.05);
        }

        /* 模态框样式增强 */
        .modal-content {
            border-radius: var(--radius-lg);
            border: none;
            box-shadow: 0 15px 50px rgba(0,0,0,0.15);
            overflow: hidden;
        }

        .modal-header {
            border-bottom: none;
            padding: 2rem;
            background: var(--yellow-gradient);
            border-radius: var(--radius-lg) var(--radius-lg) 0 0;
            position: relative;
        }

        .modal-header::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: var(--orange-gradient);
        }

        .modal-title {
            font-weight: 900;
            color: var(--text-dark);
            font-size: 1.8rem;
        }

        .modal-body {
            padding: 2rem;
        }

        .modal-img {
            width: 100%;
            border-radius: var(--radius-md);
            margin-bottom: 1.5rem;
            max-height: 450px;
            object-fit: cover;
            box-shadow: 0 10px 30px rgba(0,0,0,0.1);
        }

        .modal-body h6 {
            font-weight: 700;
            font-size: 1.2rem;
            margin-bottom: 1rem;
            color: var(--text-dark);
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .modal-body h6 i {
            color: var(--orange);
        }

        #modal-ingredients {
            background: var(--light-gray);
            padding: 1.5rem;
            border-radius: var(--radius-md);
            margin-bottom: 2rem;
        }

        #modal-ingredients li {
            padding: 12px 0;
            border-bottom: 1px solid rgba(0,0,0,0.05);
        }

        #modal-ingredients li:last-child {
            border-bottom: none;
        }

        #modal-instructions {
            background: white;
            padding: 2rem;
            border-radius: var(--radius-md);
            line-height: 1.8;
            box-shadow: inset 0 2px 8px rgba(0,0,0,0.05);
        }

        /* 收藏功能样式 */
        .collect-btn {
            position: absolute;
            top: 15px;
            right: 15px;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.9);
            border: none;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            z-index: 2;
            box-shadow: 0 3px 10px rgba(0,0,0,0.1);
            transition: all 0.3s;
        }

        .collect-btn:hover {
            transform: scale(1.1);
            background: white;
        }

        .collect-btn i {
            font-size: 1.2rem;
            color: #ccc;
            transition: all 0.3s;
        }

        .collect-btn.active i {
            color: var(--primary-yellow);
            text-shadow: 0 0 10px rgba(255,209,0,0.5);
        }

        /* 收藏模态框 */
        #collectModal .modal-body {
            padding: 2rem;
            max-height: 70vh;
            overflow-y: auto;
        }

        .collect-empty {
            text-align: center;
            padding: 3rem 0;
            color: var(--text-gray);
        }

        .collect-empty i {
            font-size: 3rem;
            margin-bottom: 1rem;
            color: #ddd;
        }

        .collect-list {
            display: grid;
            grid-template-columns: 1fr;
            gap: 15px;
        }

        .collect-item {
            display: flex;
            gap: 15px;
            padding: 15px;
            border-radius: var(--radius-md);
            background: var(--light-yellow);
            border: 1px solid rgba(255, 209, 0, 0.1);
            transition: all 0.3s;
        }

        .collect-item:hover {
            transform: translateY(-5px);
            box-shadow: 0 5px 15px rgba(255, 209, 0, 0.1);
        }

        .collect-item-img {
            width: 80px;
            height: 80px;
            border-radius: var(--radius-sm);
            object-fit: cover;
        }

        .collect-item-info {
            flex: 1;
        }

        .collect-item-title {
            font-weight: 700;
            font-size: 1.1rem;
            margin-bottom: 5px;
            color: var(--text-dark);
        }

        .collect-item-meta {
            font-size: 0.85rem;
            color: var(--text-gray);
            margin-bottom: 10px;
        }

        .collect-item-actions {
            display: flex;
            gap: 10px;
        }

        .collect-item-btn {
            padding: 5px 10px;
            font-size: 0.8rem;
            border-radius: 5px;
            border: none;
            cursor: pointer;
            transition: all 0.3s;
        }

        .btn-view {
            background: var(--orange-gradient);
            color: white;
        }

        .btn-remove {
            background: #f8f9fa;
            color: var(--text-gray);
            border: 1px solid #ddd;
        }

        .btn-remove:hover {
            background: #e9ecef;
            color: var(--red);
        }

        /* 登录模态框样式 */
        #loginModal .modal-header {
            background: var(--orange-gradient);
            color: white;
        }
        #loginModal .modal-title {
            color: white;
        }
        #loginModal .nav-tabs .nav-link {
            color: var(--text-dark);
        }
        #loginModal .nav-tabs .nav-link.active {
            color: var(--orange);
            border-color: var(--primary-yellow);
        }
        #login-error, #register-error {
            min-height: 18px;
        }

        /* 响应式适配增强 */
        @media (max-width: 992px) {
            .main-container {
                flex-direction: column; /* 小屏幕纵向排列 */
            }
            .recipe-section, .sidebar {
                width: 100%;
                flex: none;
            }
            .recipe-container {
                grid-template-columns: repeat(2, 1fr);
            }
            .sidebar {
                margin-top: 3rem;
            }
            .hero-content h1 {
                font-size: 2.8rem;
            }
        }

        @media (max-width: 576px) {
            .recipe-container {
                grid-template-columns: 1fr;
            }
            .hero-section {
                padding: 2.5rem 0;
                border-radius: 0 0 30px 30px;
            }
            .hero-content h1 {
                font-size: 2.2rem;
            }
            .search-wrapper {
                flex-direction: column;
            }
            #search-btn {
                width: 100%;
                margin-top: 1rem;
            }
            .sidebar-card-body {
                padding: 1.2rem;
            }
            #chat-history {
                height: 220px;
            }
            .modal-header, .modal-body {
                padding: 1.5rem 1rem;
            }
            .modal-title {
                font-size: 1.5rem;
            }
            .collect-item {
                flex-direction: column;
            }
            .collect-item-img {
                width: 100%;
                height: 150px;
            }
        }
        /* 上传菜谱按钮专属样式（适配现有nav-btn风格） */
.upload-btn {
    background: linear-gradient(135deg, #FF9500 0%, #FFD100 100%) !important;
    color: white !important;
    border-radius: 20px !important;
    padding: 6px 18px !important;
    margin-left: 10px !important;
    box-shadow: 0 4px 10px rgba(255, 209, 0, 0.2) !important;
    transition: all 0.3s !important;
}

.upload-btn:hover {
    transform: translateY(-2px) !important;
    box-shadow: 0 6px 15px rgba(255, 209, 0, 0.3) !important;
    background: linear-gradient(135deg, #FFB800 0%, #FFD100 100%) !important;
}

/* 上传菜谱模态框样式适配 */
#uploadRecipeModal .modal-header {
    background: var(--yellow-gradient);
    border-bottom: 3px solid var(--primary-yellow);
}

#uploadRecipeModal .modal-title {
    color: var(--text-dark);
    font-weight: 700;
}

#uploadRecipeModal .form-control {
    border-radius: var(--radius-sm);
    padding: 12px 15px;
    border: 2px solid rgba(255, 209, 0, 0.15);
    transition: var(--transition);
}

#uploadRecipeModal .form-control:focus {
    border-color: var(--primary-yellow);
    box-shadow: 0 0 0 4px rgba(255, 209, 0, 0.1);
    outline: none;
}

#uploadRecipeModal .form-label {
    color: var(--text-dark);
    font-weight: 500;
}

#uploadRecipeModal .btn-secondary {
    background: #f8f9fa;
    color: var(--text-gray);
    border: 1px solid #ddd;
    border-radius: 50px;
    padding: 10px 25px;
    font-weight: 500;
    transition: var(--transition);
}

#uploadRecipeModal .btn-secondary:hover {
    background: #e9ecef;
    color: var(--text-dark);
    transform: translateY(-2px);
}

#uploadRecipeModal .btn-warning {
    background: var(--orange-gradient);
    border: none;
    color: white;
    border-radius: 50px;
    padding: 10px 30px;
    font-weight: 700;
    transition: var(--transition);
    box-shadow: 0 4px 10px rgba(255, 209, 0, 0.2);
}

#uploadRecipeModal .btn-warning:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 15px rgba(255, 209, 0, 0.3);
}

/* 响应式适配：小屏幕下上传按钮换行显示 */
@media (max-width: 992px) {
    .upload-btn {
        margin-top: 10px !important;
        margin-left: 0 !important;
        width: 100%;
        text-align: center;
    }
}
/* 我的菜谱/上传菜谱按钮样式适配 */
#myRecipesModal .collect-item,
#uploadRecipeModal .form-control {
    border-radius: var(--radius-sm);
}

#myRecipesModal .btn-view {
    background: var(--orange-gradient);
    color: white;
}

#myRecipesModal .btn-remove {
    background: #f8f9fa;
    color: var(--text-gray);
    border: 1px solid #ddd;
}

#myRecipesModal .btn-remove:hover {
    background: #e9ecef;
    color: var(--red);
}

/* 响应式适配 */
@media (max-width: 992px) {
    .navbar-nav .nav-item .nav-btn {
        margin-top: 8px;
        margin-left: 0 !important;
        width: 100%;
    }
}
/* 美食社区样式适配 */
.community-section .card {
    border-radius: var(--radius-md);
    border: none;
    box-shadow: var(--card-shadow);
    transition: var(--transition);
}

.community-section .card:hover {
    transform: translateY(-5px);
    box-shadow: var(--hover-shadow);
}

.community-section .card-header {
    border-radius: var(--radius-md) var(--radius-md) 0 0 !important;
}

.community-section .badge {
    border-radius: 20px;
}

/* 评论区样式 */
#comments-list .border-bottom {
    border-color: var(--border-gray) !important;
}

#comment-input-container .form-control {
    border-radius: 50px 0 0 50px;
    border: 2px solid var(--primary-yellow);
    padding: 10px 15px;
}

#submit-comment-btn {
    border-radius: 0 50px 50px 0;
    background: var(--orange-gradient);
    border: none;
}

/* 响应式适配 */
@media (max-width: 768px) {
    .community-section .d-flex {
        flex-direction: column;
        gap: 10px;
    }
    .community-section .card-footer {
        flex-direction: column;
        gap: 10px;
    }
    .community-section .card-footer button {
        width: 100%;
    }
}
/* 全局平滑滚动 */
html {
    scroll-behavior: smooth;
}

/* 可选：给锚点区域添加滚动偏移（避免被导航栏遮挡） */
#ai-recipe-section {
    scroll-margin-top: 80px; /* 等于导航栏高度，避免内容被遮挡 */
}

/* 用户菜单按钮样式 */
.nav-main-btn {
    background: var(--orange-gradient);
    color: white !important;
    border-radius: 20px;
    padding: 6px 18px !important;
    margin-left: 10px;
    box-shadow: 0 4px 10px rgba(255, 209, 0, 0.2);
    transition: all 0.3s;
    border: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.nav-main-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 15px rgba(255, 209, 0, 0.3);
    background: linear-gradient(135deg, #FFB800 0%, #FFD100 100%);
}

/* 用户菜单按钮（登录后） */
.user-menu-button {
    background: var(--orange-gradient);
    color: white !important;
    border-radius: 20px;
    padding: 6px 18px !important;
    box-shadow: 0 4px 10px rgba(255, 209, 0, 0.2);
    transition: all 0.3s;
    border: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
}

.user-menu-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 15px rgba(255, 209, 0, 0.3);
    background: linear-gradient(135deg, #FFB800 0%, #FFD100 100%);
}

/* ==========天气 黄色系提示框样式 ========== */
/* ========== 天气模块独立样式 ========== */
/* ========== 天气模块独立样式 ========== */
/* 天气卡片容器 */
.weather-result-container {
    background: linear-gradient(135deg, #fff9db 0%, #ffeaa7 100%);
    border: 1px solid rgba(255, 193, 7, 0.3);
    box-shadow: 0 6px 15px rgba(255, 193, 7, 0.15);
    transition: all 0.3s ease;
}

.weather-result-container:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(255, 193, 7, 0.2);
}

/* 天气头部 */
.weather-header {
    border-bottom: 1px solid rgba(255, 193, 7, 0.2);
    padding-bottom: 10px;
}

.weather-city {
    color: #7a4d00;
}

.weather-update-time {
    color: #b08c2c;
}

/* 天气主信息 */
.weather-main {
    padding: 10px 0;
}

/* 天气图标 */
.weather-icon-container {
    font-size: 3.5rem;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: weather-float 3s ease-in-out infinite;
}

/* 温度显示 */
.weather-temperature {
    color: #e67700;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.1);
    margin: 10px 0;
}

/* 天气描述 */
.weather-description {
    color: #b08c2c;
    font-weight: 500;
}

/* 天气详情网格 */
.weather-details-grid {
    margin-top: 15px;
}

.weather-detail-item {
    background-color: rgba(255, 255, 255, 0.7) !important;
    border: 1px solid rgba(255, 193, 7, 0.2);
    transition: all 0.2s ease;
}

.weather-detail-item:hover {
    transform: scale(1.05);
    background-color: rgba(255, 255, 255, 0.9) !important;
}

.weather-detail-label {
    color: #8a6d3b;
}

.weather-detail-value {
    color: #e67700;
}

/* 刷新按钮 */
.weather-refresh {
    border-color: #ffc107;
    color: #e67700;
}

.weather-refresh:hover {
    background-color: #ffc107;
    border-color: #ffc107;
    color: #7a4d00;
}

/* 天气图标旋转动画 */
.weather-refresh i {
    transition: transform 0.3s ease;
}

.weather-refresh:active i {
    transform: rotate(180deg);
}

/* 开关样式覆盖 */
#auto-location-switch:checked {
    background-color: #ffc107;
    border-color: #ffc107;
}

/* 天气相关动画 */
@keyframes weather-float {
    0%, 100% { 
        transform: translateY(0); 
    }
    50% { 
        transform: translateY(-5px); 
    }
}

@keyframes weather-spin { 
    100% { 
        transform: rotate(360deg); 
    }
}

.weather-spin-icon { 
    animation: weather-spin 0.6s linear infinite; 
}

/* 天气类型背景色 */
.weather-sunny-bg {
    background: linear-gradient(135deg, #fff9db 0%, #ffd43b 100%) !important;
}

.weather-rainy-bg {
    background: linear-gradient(135deg, #d0ebff 0%, #a5d8ff 100%) !important;
}

.weather-rainy-bg .weather-icon-container {
    color: #339af0 !important;
}

.weather-snowy-bg {
    background: linear-gradient(135deg, #e7f5ff 0%, #d0ebff 100%) !important;
}

.weather-snowy-bg .weather-icon-container {
    color: #74c0fc !important;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .weather-result-container {
        padding: 15px !important;
    }
    
    .weather-icon-container {
        font-size: 3rem;
        height: 70px;
    }
    
    .weather-temperature.display-4 {
        font-size: 2.5rem;
    }
    
    .weather-details-grid .col-4 {
        padding: 0 5px;
    }
}








.weather-result-card {
    transition: all 0.3s ease;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.weather-icon {
    font-size: 3rem;
    animation: float 3s ease-in-out infinite;
}

.weather-spin-icon {
    animation: spin 1s linear infinite;
}

.weather-info-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
    margin-top: 15px;
}

.weather-info-item {
    background: rgba(255,255,255,0.2);
    padding: 8px;
    border-radius: 8px;
    text-align: center;
}

.weather-suggestion {
    background: rgba(255,255,255,0.15);
    border-left: 4px solid #FFB800;
    padding: 10px;
    border-radius: 8px;
    margin-top: 15px;
    font-size: 0.9rem;
}

.weather-forecast {
    margin-top: 20px;
    padding-top: 15px;
    border-top: 1px solid rgba(255,255,255,0.2);
}

.weather-forecast-title {
    font-weight: bold;
    margin-bottom: 10px;
    color: rgba(255,255,255,0.9);
}

.weather-forecast-days {
    display: flex;
    justify-content: space-between;
    gap: 10px;
}

.weather-forecast-day {
    flex: 1;
    text-align: center;
    background: rgba(255,255,255,0.1);
    padding: 10px;
    border-radius: 10px;
}

.forecast-day {
    font-size: 0.9rem;
    font-weight: bold;
}

.forecast-icon i {
    font-size: 1.5rem;
    margin: 5px 0;
}

.forecast-temp {
    display: flex;
    justify-content: center;
    gap: 5px;
    font-size: 0.9rem;
}

.temp-high {
    color: #ff6b6b;
    font-weight: bold;
}

.temp-low {
    color: #4dabf7;
    font-weight: bold;
}

.forecast-text {
    font-size: 0.8rem;
    margin-top: 5px;
}

.weather-sunny-bg {
    background: linear-gradient(135deg, #FFD700, #FFA500);
    color: #333;
}

.weather-cloudy-bg {
    background: linear-gradient(135deg, #A9A9A9, #778899);
    color: white;
}

.weather-rainy-bg {
    background: linear-gradient(135deg, #4682B4, #5F9EA0);
    color: white;
}

.weather-stormy-bg {
    background: linear-gradient(135deg, #4B0082, #483D8B);
    color: white;
}

.weather-snowy-bg {
    background: linear-gradient(135deg, #E6E6FA, #F0F8FF);
    color: #333;
}

.weather-foggy-bg {
    background: linear-gradient(135deg, #D3D3D3, #B0C4DE);
    color: #333;
}

.weather-default-bg {
    background: linear-gradient(135deg, #36D1DC, #5B86E5);
    color: white;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}
/* ========== 附近饭店搜索模块（餐厅列表左置+地图右置） ========== */
#nearby-restaurant {
    background: var(--light-yellow);
    padding: 3rem 0;
    border-radius: 20px;
    margin: 2rem auto;
    max-width: 1400px;
    box-shadow: var(--card-shadow);
}

/* 餐厅列表（左侧） */
#restaurant-list {
    min-height: 400px; /* 列表高度与地图一致 */
    max-height: 400px;
    overflow-y: auto;
    background: white;
    border-radius: var(--radius-lg);
    border: 2px solid rgba(255, 209, 0, 0.2);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.08);
    padding: 1.5rem;
}

/* 定位按钮（列表下方，宽度铺满） */
#locate-btn {
    background: var(--orange-gradient);
    color: white;
    border: none;
    border-radius: 50px;
    padding: 12px 30px;
    font-size: 1.1rem;
    font-weight: 700;
    box-shadow: 0 6px 15px rgba(255, 209, 0, 0.2);
    transition: var(--transition);
}
#locate-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(255, 209, 0, 0.3);
    background: linear-gradient(135deg, #FFB800 0%, #FFD100 100%);
}

/* 地图容器（右侧） */
#map-container {
    height: 450px; /* 地图高度略高于列表，更协调 */
    width: 100%;
    border-radius: var(--radius-lg);
    border: 2px solid rgba(255, 209, 0, 0.2);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.08);
    transition: var(--transition);
    overflow: hidden;
}
#map-container:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 25px rgba(255, 209, 0, 0.15);
}
/* 餐厅卡片容器：排版+间距 */
#restaurant-list {
  display: flex;
  flex-wrap: wrap;
  gap: 16px; /* 卡片之间的间距 */
  padding: 10px 0;
}

/* 餐厅小卡片：浅黄色基调+圆角 */
.restaurant-card {
  width: calc(33.33% - 12px); /* 一行3个卡片（可调整） */
  background: #fff9e6; /* 浅黄色背景 */
  border: 1px solid #ffe082; /* 浅黄边框 */
  border-radius: 12px; /* 圆角 */
  padding: 12px;
  box-shadow: 0 2px 6px rgba(255, 200, 80, 0.15); /* 柔和阴影 */
  transition: transform 0.2s ease;
}

/* 卡片 hover 效果：轻微上浮 */
.restaurant-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 4px 8px rgba(255, 200, 80, 0.2);
}

/* 卡片内标题：加粗+换行控制 */
.restaurant-card h4 {
  font-size: 15px;
  font-weight: 600;
  color: #8b5a2b; /* 棕黄色文字 */
  margin: 0 0 8px 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* 评分+距离区域：排版 */
.restaurant-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: #a07846;
}

/* 星级样式：黄色星星 */
.restaurant-rating i {
  color: #ffc107;
  margin-right: 2px;
}

/* 距离样式：小图标+间距 */
.restaurant-distance i {
  margin-right: 2px;
}

/* 卡片内图片（若有）：圆角适配 */
.restaurant-card img {
  width: 100%;
  height: 120px;
  object-fit: cover;
  border-radius: 8px;
  margin-bottom: 10px;
}
/* 左侧整体模块高透明背景（仅新增，不影响原有样式） */
.recipe-section {
    background-color: rgba(255, 255, 255, 0.3) !important; /* 高透明，!important 确保生效但不改动原有样式 */
    backdrop-filter: blur(5px); /* 可选毛玻璃效果 */
}
/* 餐厅卡片样式 */
.restaurant-card {
    width: calc(33.333% - 16px);
    box-sizing: border-box;
    background: #fff9e6;
    border: 1px solid #ffe082;
    border-radius: 12px;
    padding: 12px;
    box-shadow: 0 2px 6px rgba(255, 200, 80, 0.15);
    transition: transform 0.2s ease;
    cursor: pointer;
}
.restaurant-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 4px 8px rgba(255, 200, 80, 0.2);
}
.restaurant-card img {
    width: 100%;
    height: 120px;
    object-fit: cover;
    border-radius: 8px;
    margin-bottom: 10px;
}
.restaurant-card h4 {
    font-size: 15px;
    font-weight: 600;
    color: #8b5a2b;
    margin: 0 0 8px 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.restaurant-meta {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: #a07846;
}
.restaurant-rating i {
    color: #ffc107;
    margin-right: 2px;
}

/* 餐厅弹窗样式 */
.restaurant-modal-img {
    width: 100%;
    height: 180px;
    object-fit: cover;
    border-radius: 8px;
    margin-bottom: 15px;
}
.restaurant-modal-meta {
    color: #a07846;
}