/* ========================================
   卷烟开口营销助手 - 样式表
   ======================================== */

/* CSS变量 - 小程序绿色主题 */
:root {
    /* 主色调 - 烟草绿 */
    --primary-green: #1E7F3E;
    --primary-color: #1E7F3E;  /* 兼容旧变量名 */
    --secondary-green: #2BA84A;
    --light-green: #E8F5E9;
    --dark-green: #0A5C2F;
    --primary-dark: #0A5C2F;  /* 兼容旧变量名 */
    --primary-light: #2BA84A;  /* 兼容旧变量名 */
    
    /* 中性色 */
    --text-primary: #1A1A1A;
    --text-secondary: #595959;
    --text-light: #8C8C8C;
    --text-disabled: #BFBFBF;
    --border-color: #E8E8E8;
    --border-light: #F0F0F0;
    --background-color: #F5F7FA;
    --bg-primary: #F5F7FA;
    --bg-secondary: #FFFFFF;
    --white: #FFFFFF;
    
    /* 功能色 */
    --orange: #FF6B35;
    --blue: #3498DB;
    --accent-color: #3498DB;  /* 兼容旧变量名 */
    --red: #E74C3C;
    --danger-color: #E74C3C;  /* 兼容旧变量名 */
    --success-color: #27ae60;
    --warning-color: #f39c12;
    
    /* 阴影系统 */
    --shadow-light: rgba(0, 0, 0, 0.04);
    --shadow-medium: rgba(0, 0, 0, 0.08);
    --shadow-dark: rgba(0, 0, 0, 0.12);
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
    --shadow-lg: 0 8px 24px rgba(0,0,0,0.15);
    
    /* 字体规范 */
    --font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Helvetica Neue", Arial, sans-serif;
    --font-size-xs: 11px;
    --font-size-sm: 13px;
    --font-size-md: 15px;
    --font-size-lg: 17px;
    --font-size-xl: 20px;
    --font-size-xxl: 24px;
    --font-weight-light: 300;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    
    /* 间距系统 */
    --spacing-xs: 4px;
    --spacing-sm: 6px;
    --spacing-md: 8px;
    --spacing-lg: 12px;
    --spacing-xl: 16px;
    --spacing-xxl: 24px;
    --spacing-xxxl: 32px;
    
    /* 圆角规范 */
    --radius-sm: 4px;
    --radius-md: 8px;
    --border-radius-sm: 4px;
    --border-radius-md: 8px;
    --border-radius-lg: 12px;
    --radius-lg: 12px;
    --border-radius-xl: 24px;
    
    /* 过渡动画 */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 基础重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-family);
    background: linear-gradient(180deg, var(--light-green) 0%, var(--white) 100%);
    min-height: 100vh;
    color: var(--text-primary);
    font-size: var(--font-size-md);
    line-height: 1.7;
    letter-spacing: 0.02em;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* 应用容器 */
.app-container {
    max-width: 480px;
    margin: 0 auto;
    min-height: 100vh;
    background: var(--bg-primary);
    position: relative;
    overflow-x: hidden;
}

/* 头部样式 - 绿色主题 */
.header {
    background: linear-gradient(135deg, var(--primary-green) 0%, var(--secondary-green) 100%);
    padding: 40px 20px 60px;
    text-align: center;
    color: white;
    position: relative;
    overflow: hidden;
}

.header::after {
    content: '';
    position: absolute;
    bottom: -30px;
    left: 0;
    right: 0;
    height: 60px;
    background: var(--bg-primary);
    border-radius: 50% 50% 0 0;
}

.header.compact {
    padding: 15px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header.compact::after {
    display: none;
}

.header.compact h1 {
    font-size: 18px;
    font-weight: 600;
}

.logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 8px;
}

.logo-icon {
    font-size: 36px;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

.tagline {
    font-size: 14px;
    opacity: 0.9;
}

/* 头部右上角操作区域（+ 号菜单） */
.header-actions {
    position: absolute;
    top: 16px;
    right: 16px;
    display: flex;
    align-items: center;
    gap: 8px;
    z-index: 2;
}

.plus-btn {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: none;
    background: rgba(255,255,255,0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    cursor: pointer;
    transition: var(--transition);
}

.plus-btn svg {
    width: 20px;
    height: 20px;
}

.plus-btn:hover {
    background: rgba(255,255,255,0.3);
}

.action-menu {
    position: absolute;
    top: 44px;
    right: 0;
    background: #fff;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    min-width: 120px;
    padding: 6px 0;
    display: none;
}

.action-menu.show {
    display: block;
}

.action-menu button {
    width: 100%;
    padding: 8px 14px;
    background: transparent;
    border: none;
    text-align: left;
    font-size: 14px;
    color: var(--text-primary);
    cursor: pointer;
    transition: var(--transition);
}

.action-menu button:hover {
    background: var(--bg-primary);
}

.back-btn, .share-btn {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255,255,255,0.2);
    border: none;
    border-radius: 50%;
    color: white;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
}

.back-btn:hover, .share-btn:hover {
    background: rgba(255,255,255,0.3);
}

.back-btn svg, .share-btn svg {
    width: 20px;
    height: 20px;
}

/* 主内容区 */
.main-content {
    padding: 20px;
    position: relative;
    z-index: 1;
    margin-top: -30px;
}

/* 功能卡片 */
.feature-card {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: 24px;
    margin-bottom: 16px;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    cursor: pointer;
    text-decoration: none;
    color: inherit;
    display: block;
}

.feature-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.feature-card:active {
    transform: translateY(0);
}

.card-icon {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
}

.card-icon svg {
    width: 28px;
    height: 28px;
}

.scan-card .card-icon {
    background: linear-gradient(135deg, var(--orange), #FF8C5A);
    color: white;
}

.search-card .card-icon {
    background: linear-gradient(135deg, var(--accent-color), #5dade2);
    color: white;
}

.url-card .card-icon {
    background: linear-gradient(135deg, #9b59b6, #8e44ad);
    color: white;
}

.history-card .card-icon {
    background: linear-gradient(135deg, var(--secondary-green), #4CAF50);
    color: white;
}

.feature-card h2 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.feature-card p {
    font-size: 14px;
    color: var(--text-secondary);
}

/* 搜索区域 */
.search-section {
    position: sticky;
    top: 0;
    background: var(--white);
    padding: var(--spacing-md) var(--spacing-lg);
    z-index: 999;
    box-shadow: 0 2px 8px rgba(30, 127, 62, 0.1);
    border-bottom: 1px solid var(--border-color);
}

.search-box {
    display: flex;
    align-items: center;
    background: var(--white);
    border-radius: var(--border-radius-xl);
    border: 1px solid var(--border-light);
    padding: var(--spacing-md) var(--spacing-lg);
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 2px 8px var(--shadow-light);
    cursor: pointer;
}

.search-box:active {
    border-color: var(--primary-green);
    box-shadow: 0 4px 12px rgba(30, 127, 62, 0.2);
}

.search-icon {
    width: 20px;
    height: 20px;
    margin-right: var(--spacing-sm);
    opacity: 0.6;
    flex-shrink: 0;
}

.search-input {
    flex: 1;
    font-size: var(--font-size-md);
    color: var(--text-primary);
    font-weight: var(--font-weight-normal);
    background: transparent;
    border: none;
    outline: none;
    cursor: text;
}

.search-input::placeholder {
    color: var(--text-light);
}

/* 搜索历史面板 */
.search-history-panel {
    position: absolute;
    top: 100%;
    left: var(--spacing-lg);
    right: var(--spacing-lg);
    background: var(--white);
    border-radius: var(--border-radius-lg);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
    margin-top: var(--spacing-sm);
    z-index: 1000;
    max-height: 300px;
    overflow-y: auto;
    border: 1px solid var(--border-light);
}

.history-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid var(--border-light);
}

.history-title {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--text-secondary);
}

.clear-history-btn {
    background: none;
    border: none;
    color: var(--text-light);
    font-size: var(--font-size-xs);
    cursor: pointer;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius-sm);
    transition: var(--transition);
}

.clear-history-btn:hover {
    background: var(--bg-primary);
    color: var(--text-primary);
}

.search-history-list {
    padding: var(--spacing-xs) 0;
}

.search-history-list .history-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-lg);
    cursor: pointer;
    transition: var(--transition);
    border-bottom: 1px solid var(--border-light);
}

.search-history-list .history-item:last-child {
    border-bottom: none;
}

.search-history-list .history-item:hover {
    background: var(--bg-primary);
}

.search-history-list .history-icon {
    width: 18px;
    height: 18px;
    color: var(--text-light);
    flex-shrink: 0;
}

.search-history-list .history-keyword {
    font-size: var(--font-size-sm);
    color: var(--text-primary);
    flex: 1;
}

.empty-history {
    padding: var(--spacing-xl);
    text-align: center;
    color: var(--text-light);
    font-size: var(--font-size-sm);
}

/* 品牌与热销区域 */
.brands-section {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl) var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

.section-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    margin-bottom: var(--spacing-lg);
    position: relative;
    padding-left: var(--spacing-lg);
    letter-spacing: -0.5px;
}

.section-title::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 14px;
    background: linear-gradient(180deg, var(--primary-green), var(--secondary-green));
    border-radius: var(--border-radius-sm);
}

.brand-section {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: 18px 16px 14px;
    margin-bottom: 16px;
    box-shadow: var(--shadow-sm);
}

.brand-section-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin-bottom: 10px;
}

.brand-section-header h2 {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
}

.brand-subtitle {
    font-size: 12px;
    color: var(--text-secondary);
}

/* 品牌网格布局 */
.brands-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
}

@media (min-width: 480px) {
    .brands-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

@media (min-width: 640px) {
    .brands-grid {
        grid-template-columns: repeat(5, 1fr);
    }
}

@media (min-width: 768px) {
    .brands-grid {
        grid-template-columns: repeat(6, 1fr);
    }
}

.brand-item {
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
}

.brand-item:hover {
    transform: translateY(-2px);
}

.brand-item .brand-name {
    font-size: var(--font-size-sm);
    color: var(--text-primary);
    font-weight: var(--font-weight-medium);
    line-height: 1.5;
    margin-top: var(--spacing-xs);
}

.brand-item .brand-info {
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
    font-weight: var(--font-weight-normal);
    margin-top: var(--spacing-xs);
    line-height: 1.4;
}

.brand-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.brand-chip {
    padding: 6px 10px;
    border-radius: 16px;
    border: 1px solid var(--border-color);
    background: var(--bg-primary);
    font-size: 12px;
    color: var(--text-primary);
    cursor: pointer;
    transition: var(--transition);
}

.brand-chip:hover {
    background: var(--primary-green);
    color: #fff;
    border-color: var(--primary-green);
}

.brand-loading,
.brand-empty {
    font-size: 12px;
    color: var(--text-secondary);
}

.popular-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.popular-item {
    display: flex;
    flex-direction: column;
    gap: 2px;
    padding: 8px 10px;
    border-radius: var(--radius-md);
    background: var(--bg-primary);
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

.popular-item:hover {
    background: #fff;
    box-shadow: var(--shadow-sm);
}

.popular-main {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 6px;
}

.popular-name {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
}

.popular-brand {
    font-size: 12px;
    color: var(--text-secondary);
}

.popular-meta {
    font-size: 11px;
    color: var(--text-secondary);
}

/* 搜索框样式 */
.search-box, .url-input-box {
    display: flex;
    gap: 10px;
    margin-top: 12px;
}

.search-box input, .url-input-box input {
    flex: 1;
    padding: 12px 16px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 14px;
    transition: var(--transition);
    outline: none;
}

.search-box input:focus, .url-input-box input:focus {
    border-color: var(--primary-green);
    box-shadow: 0 0 0 3px rgba(30, 127, 62, 0.1);
}

.search-box button, .url-input-box button {
    padding: 12px 20px;
    background: linear-gradient(135deg, var(--primary-green), var(--secondary-green));
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.search-box button:hover, .url-input-box button:hover {
    transform: scale(1.02);
    box-shadow: var(--shadow-md);
}

/* 卷烟信息卡片 */
.cigarette-info-card {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    margin-bottom: 20px;
}

.info-header {
    display: flex;
    gap: 16px;
    padding: 20px;
    background: var(--white);
    border-bottom: 1px solid var(--border-light);
}

.cigarette-image, .cigarette-placeholder {
    width: 120px;
    height: 140px;
    border-radius: var(--radius-md);
    object-fit: contain;
    background: linear-gradient(135deg, var(--light-green) 0%, var(--white) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.cigarette-placeholder svg {
    width: 40px;
    height: 40px;
    color: var(--text-light);
}

.info-basic {
    flex: 1;
}

.info-basic h2 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 4px;
    color: var(--secondary-color);
}

.info-basic .manufacturer {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.info-basic .price {
    font-size: 18px;
    font-weight: 700;
    color: var(--primary-green);
}

.info-specs {
    display: flex;
    flex-direction: column;
    gap: 0;
    background: var(--white);
}

.spec-item {
    background: var(--white);
    padding: 12px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-light);
}

.spec-item:last-child {
    border-bottom: none;
}

.spec-item .label {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    font-weight: var(--font-weight-medium);
}

.spec-item .value {
    font-size: var(--font-size-md);
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
}

.info-description, .info-taste {
    padding: 16px 20px;
    border-top: 1px solid var(--border-color);
}

.info-description h3, .info-taste h3 {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.info-description p, .info-taste p {
    font-size: 14px;
    color: var(--text-primary);
    line-height: 1.8;
}

/* 话术区域 */
.pitch-section {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: 20px;
    box-shadow: var(--shadow-md);
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.section-header h3 {
    font-size: 16px;
    font-weight: 600;
}

.refresh-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 12px;
    background: var(--bg-primary);
    border: none;
    border-radius: var(--radius-sm);
    font-size: 12px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
}

.refresh-btn:hover {
    background: var(--border-color);
    color: var(--text-primary);
}

.refresh-btn svg {
    width: 14px;
    height: 14px;
}

/* 话术标签页 */
.pitch-tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 16px;
    overflow-x: auto;
}

.pitch-tabs .tab {
    padding: 10px 16px;
    background: var(--bg-primary);
    border: none;
    border-radius: 20px;
    font-size: 13px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}

.pitch-tabs .tab.active {
    background: linear-gradient(135deg, var(--primary-green), var(--secondary-green));
    color: white;
}

.pitch-tabs .tab:hover:not(.active) {
    background: var(--border-color);
}

/* 话术内容 */
.pitch-content {
    background: var(--light-green);
    border-radius: var(--radius-md);
    padding: 20px;
    min-height: 120px;
    margin-bottom: 16px;
}

.pitch-text {
    font-size: 15px;
    line-height: 1.8;
    color: var(--text-primary);
}

.pitch-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100px;
}

.btn-generate {
    padding: 14px 28px;
    background: linear-gradient(135deg, var(--primary-green), var(--secondary-green));
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.btn-generate:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-md);
}

/* 话术操作按钮 */
.pitch-actions {
    display: flex;
    gap: 12px;
    margin-bottom: 20px;
}

.action-btn {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px;
    background: var(--bg-primary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
    cursor: pointer;
    transition: var(--transition);
}

.action-btn:hover {
    border-color: var(--primary-green);
    color: var(--primary-green);
}

.action-btn:active {
    background: var(--border-color);
}

.action-btn svg {
    width: 18px;
    height: 18px;
}

.action-btn.active {
    background: var(--primary-green);
    border-color: var(--primary-green);
    color: white;
}

/* 反馈评价 */
.feedback-section {
    text-align: center;
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
}

.feedback-section p {
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 12px;
}

.rating-stars {
    display: flex;
    justify-content: center;
    gap: 8px;
}

.rating-stars .star {
    font-size: 28px;
    color: var(--text-light);
    cursor: pointer;
    transition: var(--transition);
}

.rating-stars .star:hover,
.rating-stars .star.active {
    color: var(--warning-color);
    transform: scale(1.2);
}

/* 历史记录列表 */
.history-list {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.history-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

.history-item:last-child {
    border-bottom: none;
}

.history-item:hover {
    background: var(--bg-primary);
}

.history-item .item-icon {
    width: 44px;
    height: 44px;
    background: linear-gradient(135deg, var(--secondary-green), var(--primary-green));
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
}

.history-item .item-icon svg {
    width: 24px;
    height: 24px;
}

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

.history-item .item-info h3 {
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 4px;
}

.history-item .scan-time {
    font-size: 12px;
    color: var(--text-secondary);
}

.history-item .arrow {
    width: 20px;
    height: 20px;
    color: var(--text-light);
}

/* 空状态 */
.empty-state, .no-data {
    text-align: center;
    padding: 60px 20px;
}

.empty-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    color: var(--text-light);
}

.empty-icon svg {
    width: 100%;
    height: 100%;
}

.empty-state p, .no-data p {
    font-size: 15px;
    color: var(--text-secondary);
    margin-bottom: 20px;
}

.btn-primary {
    display: inline-block;
    padding: 14px 32px;
    background: linear-gradient(135deg, var(--primary-green), var(--secondary-green));
    color: white;
    text-decoration: none;
    border-radius: var(--radius-md);
    font-size: 15px;
    font-weight: 600;
    transition: var(--transition);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* 模态框 */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.5);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    padding: 20px;
}

.modal.show {
    display: flex;
}

.modal-content {
    background: white;
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 400px;
    max-height: 80vh;
    overflow: hidden;
    animation: slideUp 0.3s ease;
}

@keyframes slideUp {
    from { transform: translateY(50px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h3 {
    font-size: 16px;
    font-weight: 600;
}

.close-btn {
    width: 32px;
    height: 32px;
    background: none;
    border: none;
    font-size: 24px;
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

.search-results {
    padding: 16px;
    max-height: 400px;
    overflow-y: auto;
}

/* 加载指示器 */
.loading {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255,255,255,0.9);
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 2000;
}

.loading.show {
    display: flex;
}

.spinner {
    width: 48px;
    height: 48px;
    border: 4px solid var(--border-color);
    border-top-color: var(--primary-green);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

.loading p {
    margin-top: 16px;
    font-size: 14px;
    color: var(--text-secondary);
}

/* 底部 */
.footer {
    text-align: center;
    padding: 20px;
    color: var(--text-secondary);
    font-size: 12px;
}

/* 响应式调整 */
@media (max-width: 375px) {
    .header {
        padding: 30px 16px 50px;
    }
    
    .logo {
        font-size: 24px;
    }
    
    .main-content {
        padding: 16px;
    }
    
    .feature-card {
        padding: 20px;
    }
}

/* Toast提示 */
.toast {
    position: fixed;
    bottom: 100px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: var(--primary-green);
    color: white;
    padding: 12px 24px;
    border-radius: var(--radius-md);
    font-size: 14px;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    transition: all 0.3s ease;
    z-index: 3000;
}

.toast.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
}

/* 扫码框动画 */
@keyframes scanLine {
    0% {
        top: 0;
        opacity: 1;
    }
    50% {
        top: calc(100% - 2px);
        opacity: 1;
    }
    100% {
        top: 0;
        opacity: 0.3;
    }
}

@keyframes scanFramePulse {
    0%, 100% {
        box-shadow: 0 0 0 4px rgba(0,255,0,0.3), 0 0 20px rgba(0,255,0,0.5);
        border-color: #00ff00;
    }
    50% {
        box-shadow: 0 0 0 8px rgba(0,255,0,0.5), 0 0 30px rgba(0,255,0,0.8);
        border-color: #66ff66;
    }
}

#scanFrame {
    animation: scanFramePulse 2s ease-in-out infinite;
}

#scanLine {
    animation: scanLine 2s linear infinite;
}