/* 重置样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* 基础字体和颜色变量 */
:root {
    --primary-color: #007AFF;
    --secondary-color: #5856D6;
    --success-color: #34C759;
    --warning-color: #FF9500;
    --error-color: #FF3B30;
    --background-color: #F2F2F7;
    --surface-color: #FFFFFF;
    --text-primary: #000000;
    --text-secondary: #8E8E93;
    --border-color: #E5E5EA;
    --shadow-light: 0 2px 10px rgba(0, 0, 0, 0.08);
    --shadow-medium: 0 4px 20px rgba(0, 0, 0, 0.12);
    --radius-small: 8px;
    --radius-medium: 12px;
    --radius-large: 16px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--background-color);
    color: var(--text-primary);
    line-height: 1.5;
    overflow-x: hidden;
}

/* 应用容器 */
.app-container {
    max-width: 414px;
    margin: 0 auto;
    background-color: var(--surface-color);
    min-height: 100vh;
    position: relative;
    box-shadow: var(--shadow-medium);
}

/* 状态栏 */
.status-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 20px;
    background-color: var(--surface-color);
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
}

.status-icons {
    display: flex;
    gap: 4px;
}

.status-icons i {
    font-size: 12px;
}

/* 头部导航 */
.app-header {
    background-color: var(--surface-color);
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.app-title {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
}

.header-icons {
    display: flex;
    gap: 12px;
}

.icon-btn {
    position: relative;
    width: 40px;
    height: 40px;
    border: none;
    background: var(--background-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    color: var(--primary-color);
    cursor: pointer;
    transition: all 0.2s ease;
}

.icon-btn:hover {
    transform: scale(1.05);
    background-color: var(--primary-color);
    color: white;
}

.notification-badge {
    position: absolute;
    top: -2px;
    right: -2px;
    background-color: var(--error-color);
    color: white;
    font-size: 10px;
    font-weight: 600;
    padding: 2px 6px;
    border-radius: 10px;
    min-width: 16px;
    text-align: center;
}

/* 主要内容区域 */
.main-content {
    padding: 0 20px 100px;
    background-color: var(--background-color);
}

/* 页面管理 */
.page {
    display: none;
    animation: slideIn 0.3s ease-out;
}

.page.active {
    display: block;
}

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

/* 页面头部 */
.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 0;
    margin-bottom: 16px;
}

.back-btn {
    width: 40px;
    height: 40px;
    border: none;
    background: var(--background-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    color: var(--primary-color);
    cursor: pointer;
    transition: all 0.2s ease;
}

.back-btn:hover {
    background-color: var(--primary-color);
    color: white;
}

.page-header h2 {
    font-size: 20px;
    font-weight: 700;
    flex: 1;
    text-align: center;
}

.text-btn {
    background: none;
    border: none;
    color: var(--primary-color);
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    padding: 8px 16px;
    border-radius: var(--radius-small);
    transition: all 0.2s ease;
}

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

/* 卡片样式 */
.card {
    background-color: var(--surface-color);
    border-radius: var(--radius-large);
    padding: 20px;
    margin-bottom: 16px;
    box-shadow: var(--shadow-light);
    border: 1px solid var(--border-color);
}

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

.card-header h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
}

.item-count {
    font-size: 14px;
    color: var(--text-secondary);
    font-weight: 500;
}

/* 环境监控卡片 */
.environment-card {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border: none;
}

.environment-card .card-header h3,
.environment-card .status-indicator {
    color: white;
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    font-weight: 500;
}

.status-indicator.online::before {
    content: '';
    width: 8px;
    height: 8px;
    background-color: var(--success-color);
    border-radius: 50%;
}

.environment-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 20px;
}

.env-item {
    display: flex;
    align-items: center;
    gap: 12px;
}

.env-icon {
    width: 48px;
    height: 48px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-medium);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
}

.env-data {
    display: flex;
    flex-direction: column;
}

.env-value {
    font-size: 24px;
    font-weight: 700;
    line-height: 1;
}

.env-label {
    font-size: 14px;
    opacity: 0.8;
}

/* 按钮样式 */
.btn-primary {
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: var(--radius-medium);
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-primary:hover {
    background-color: #0056CC;
    transform: translateY(-1px);
}

.btn-secondary {
    background-color: rgba(255, 255, 255, 0.2);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.3);
    padding: 12px 24px;
    border-radius: var(--radius-medium);
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: 8px;
}

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

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

/* 快速操作 */
.quick-actions {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
}

.quick-action-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 20px 12px;
    background-color: var(--background-color);
    border: none;
    border-radius: var(--radius-medium);
    cursor: pointer;
    transition: all 0.2s ease;
}

.quick-action-btn:hover {
    background-color: var(--primary-color);
    color: white;
    transform: translateY(-2px);
}

.quick-action-btn i {
    font-size: 24px;
    color: var(--primary-color);
}

.quick-action-btn:hover i {
    color: white;
}

.quick-action-btn span {
    font-size: 14px;
    font-weight: 500;
}

/* 分类网格 */
.category-grid {
    display: grid;
    gap: 16px;
}

.category-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px;
    background-color: var(--background-color);
    border-radius: var(--radius-medium);
    cursor: pointer;
    transition: all 0.2s ease;
}

.category-item:hover {
    background-color: var(--primary-color);
    color: white;
    transform: translateX(4px);
}

.category-item img {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-small);
    object-fit: cover;
}

.category-info h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 4px;
}

.category-info span {
    font-size: 14px;
    color: var(--text-secondary);
}

.category-item:hover .category-info span {
    color: rgba(255, 255, 255, 0.8);
}

/* 活动列表 */
.activity-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.activity-item {
    display: flex;
    align-items: center;
    gap: 16px;
}

.activity-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    color: white;
}

.activity-icon.deposit {
    background-color: var(--success-color);
}

.activity-icon.retrieve {
    background-color: var(--warning-color);
}

.activity-content {
    flex: 1;
}

.activity-title {
    font-size: 16px;
    font-weight: 500;
    margin-bottom: 4px;
}

.activity-time {
    font-size: 14px;
    color: var(--text-secondary);
}

/* 筛选标签 */
.filter-tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 20px;
    padding: 0 4px;
}

.filter-tab {
    padding: 8px 16px;
    border: none;
    background-color: var(--background-color);
    color: var(--text-secondary);
    border-radius: 20px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

.filter-tab.active,
.filter-tab:hover {
    background-color: var(--primary-color);
    color: white;
}

/* 物品列表 */
.items-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.item-card {
    background-color: var(--surface-color);
    border-radius: var(--radius-medium);
    padding: 16px;
    border: 1px solid var(--border-color);
    cursor: pointer;
    transition: all 0.2s ease;
}

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

.item-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.item-name {
    font-size: 16px;
    font-weight: 600;
}

.item-location {
    font-size: 12px;
    color: var(--text-secondary);
    background-color: var(--background-color);
    padding: 4px 8px;
    border-radius: 12px;
}

.item-details {
    display: flex;
    justify-content: space-between;
    font-size: 14px;
    color: var(--text-secondary);
}

/* 监控统计 */
.monitoring-stats {
    display: grid;
    gap: 16px;
    margin-bottom: 20px;
}

.stat-card {
    background-color: var(--surface-color);
    border-radius: var(--radius-medium);
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 16px;
    border: 1px solid var(--border-color);
}

.stat-icon {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-medium);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: white;
}

.stat-icon.temp {
    background: linear-gradient(135deg, #FF6B6B, #FF8E53);
}

.stat-icon.humidity {
    background: linear-gradient(135deg, #4ECDC4, #44A08D);
}

.stat-content {
    flex: 1;
}

.stat-value {
    font-size: 24px;
    font-weight: 700;
    line-height: 1;
    margin-bottom: 4px;
}

.stat-label {
    font-size: 16px;
    font-weight: 500;
    margin-bottom: 4px;
}

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

/* 图表容器 */
.chart-container {
    height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--background-color);
    border-radius: var(--radius-small);
}

/* 系统状态 */
.system-status {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.status-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 0;
    border-bottom: 1px solid var(--border-color);
}

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

.status-label {
    font-size: 16px;
    font-weight: 500;
}

.status-value {
    font-size: 14px;
    font-weight: 600;
    padding: 4px 12px;
    border-radius: 12px;
}

.status-value.online {
    background-color: var(--success-color);
    color: white;
}

/* 表单样式 */
.item-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 16px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-medium);
    font-size: 16px;
    background-color: var(--surface-color);
    transition: all 0.2s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 122, 255, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

/* 照片上传 */
.photo-upload {
    display: flex;
    align-items: center;
    gap: 12px;
}

.upload-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 16px 24px;
    background-color: var(--background-color);
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-medium);
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 16px;
}

.upload-btn:hover {
    border-color: var(--primary-color);
    background-color: rgba(0, 122, 255, 0.1);
}

/* 搜索栏 */
.search-bar {
    position: relative;
    margin-bottom: 20px;
}

.search-bar i {
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-secondary);
    font-size: 16px;
}

.search-bar input {
    width: 100%;
    padding: 16px 16px 16px 48px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-medium);
    font-size: 16px;
    background-color: var(--surface-color);
}

.search-bar input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 122, 255, 0.1);
}

/* 服务列表 */
.service-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.service-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px;
    background-color: var(--background-color);
    border-radius: var(--radius-medium);
}

.service-icon {
    width: 48px;
    height: 48px;
    background-color: var(--primary-color);
    border-radius: var(--radius-medium);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    color: white;
}

.service-content {
    flex: 1;
}

.service-content h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 4px;
}

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

/* 联系选项 */
.contact-options {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
}

.contact-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 20px 12px;
    background-color: var(--background-color);
    border: none;
    border-radius: var(--radius-medium);
    cursor: pointer;
    transition: all 0.2s ease;
}

.contact-btn:hover {
    background-color: var(--primary-color);
    color: white;
    transform: translateY(-2px);
}

.contact-btn i {
    font-size: 24px;
    color: var(--primary-color);
}

.contact-btn:hover i {
    color: white;
}

.contact-btn span {
    font-size: 14px;
    font-weight: 500;
}

/* 记录列表 */
.records-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.record-item {
    background-color: var(--surface-color);
    border-radius: var(--radius-medium);
    padding: 16px;
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 16px;
}

.record-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    color: white;
}

.record-icon.deposit {
    background-color: var(--success-color);
}

.record-icon.retrieve {
    background-color: var(--warning-color);
}

.record-content {
    flex: 1;
}

.record-title {
    font-size: 16px;
    font-weight: 500;
    margin-bottom: 4px;
}

.record-details {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 4px;
}

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

/* 底部导航 */
.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100%;
    max-width: 414px;
    background-color: var(--surface-color);
    border-top: 1px solid var(--border-color);
    padding: 8px 20px 20px;
    display: flex;
    justify-content: space-around;
    backdrop-filter: blur(10px);
}

.nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    padding: 8px 12px;
    border: none;
    background: none;
    cursor: pointer;
    transition: all 0.2s ease;
    color: var(--text-secondary);
}

.nav-item.active,
.nav-item:hover {
    color: var(--primary-color);
    transform: translateY(-2px);
}

.nav-item i {
    font-size: 20px;
}

.nav-item span {
    font-size: 12px;
    font-weight: 500;
}

/* 响应式设计 */
@media (max-width: 375px) {
    .main-content {
        padding: 0 16px 100px;
    }
    
    .quick-actions {
        grid-template-columns: 1fr;
        gap: 8px;
    }
    
    .quick-action-btn {
        flex-direction: row;
        justify-content: flex-start;
        gap: 12px;
        padding: 16px;
    }
    
    .contact-options {
        grid-template-columns: 1fr;
        gap: 8px;
    }
    
    .contact-btn {
        flex-direction: row;
        justify-content: flex-start;
        gap: 12px;
        padding: 16px;
    }
}

/* 加载动画 */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.card {
    animation: fadeIn 0.3s ease-out;
}

/* 深色模式支持 */
@media (prefers-color-scheme: dark) {
    :root {
        --background-color: #1C1C1E;
        --surface-color: #2C2C2E;
        --text-primary: #FFFFFF;
        --text-secondary: #8E8E93;
        --border-color: #38383A;
    }
}