/* ===================================
   智慧农业大棚物联网云平台 - 样式表
   主题色：农业绿色系
   =================================== */

/* 基础重置与变量定义 */
:root {
    /* 农业绿色系配色 */
    --primary-green: #2E7D32;
    --light-green: #4CAF50;
    --dark-green: #1B5E20;
    --accent-green: #66BB6A;
    --bg-green: #E8F5E9;
    
    /* 辅助配色 */
    --blue: #1976D2;
    --orange: #FF9800;
    --red: #D32F2F;
    --purple: #7B1FA2;
    --grey: #757575;
    --light-grey: #F5F5F5;
    --border-grey: #E0E0E0;
    
    /* 文字颜色 */
    --text-primary: #212121;
    --text-secondary: #757575;
    --text-white: #FFFFFF;
    
    /* 间距 */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    
    /* 圆角 */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    
    /* 阴影 */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.15);
    
    /* 过渡动画 */
    --transition: all 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: white;
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ===================================
   顶部导航栏
   =================================== */
.main-header {
    background: linear-gradient(135deg, var(--primary-green) 0%, var(--dark-green) 100%);
    color: var(--text-white);
    padding: var(--spacing-md) 0;
    box-shadow: var(--shadow-lg);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-lg);
}

.logo-section {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    flex-shrink: 0;
}

.logo-section i {
    font-size: 2rem;
    color: var(--accent-green);
}

.logo-section h1 {
    font-size: 1.5rem;
    font-weight: 600;
    white-space: nowrap;
}

.header-status {
    display: flex;
    gap: var(--spacing-md);
    flex-shrink: 0;
}

.status-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    background: rgba(255, 255, 255, 0.15);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-md);
    backdrop-filter: blur(10px);
    white-space: nowrap;
}

.status-item i {
    color: var(--accent-green);
}

.status-item strong {
    color: var(--accent-green);
    font-size: 1.1rem;
}

/* ===================================
   选项卡导航（在header右侧）
   =================================== */
.tab-navigation {
    display: flex;
    gap: var(--spacing-xs);
    flex: 1;
    justify-content: center;
    align-items: center;
}

.tab-btn {
    background: rgba(255, 255, 255, 0.1);
    border: 2px solid rgba(255, 255, 255, 0.2);
    padding: var(--spacing-xs) var(--spacing-md);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.95rem;
    font-weight: 500;
    border-radius: var(--radius-md);
    transition: all 0.3s ease;
    position: relative;
    white-space: nowrap;
}

.tab-btn:hover {
    color: white;
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.4);
    transform: translateY(-2px);
}

.tab-btn.active {
    color: white;
    background: var(--accent-green);
    border-color: var(--accent-green);
    font-weight: 600;
    box-shadow: 0 4px 12px rgba(139, 195, 74, 0.4);
}

.tab-btn i {
    font-size: 1.1rem;
}

/* ===================================
   主容器布局
   =================================== */
.main-container {
    max-width: 1400px;
    width: 100%;
    margin: 0 auto;
    padding: var(--spacing-lg);
    flex: 1;
}

.tab-content {
    display: none;
    animation: fadeIn 0.4s ease;
}

.tab-content.active {
    display: block;
}

/* ===================================
   实时监控布局
   =================================== */
.monitoring-layout {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-lg);
}

.sensors-panel {
    grid-column: 1 / 2;
}

.charts-panel {
    grid-column: 1 / 2;
}

.alerts-panel {
    grid-column: 2 / 3;
    grid-row: 1 / 3;
}

.sensors-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: var(--spacing-md);
}

.sensor-card {
    background: linear-gradient(135deg, var(--bg-green) 0%, white 100%);
    border: 2px solid var(--border-grey);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    transition: var(--transition);
}

.sensor-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-green);
}

.sensor-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-sm);
}

.sensor-icon {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
}

.sensor-status-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--light-green);
    box-shadow: 0 0 10px var(--light-green);
    animation: pulse 2s infinite;
}

.sensor-info h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.sensor-location {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.sensor-data {
    display: flex;
    align-items: baseline;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-sm);
}

.sensor-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-green);
}

.sensor-unit {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.sensor-time {
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-top: var(--spacing-xs);
}

.chart-container {
    height: 400px;
    padding: var(--spacing-sm);
}

.alerts-list {
    max-height: 600px;
    overflow-y: auto;
}

.alert-item {
    background: #FFF3E0;
    border-left: 4px solid var(--orange);
    border-radius: var(--radius-sm);
    padding: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    animation: slideIn 0.3s ease;
}

.alert-item.warning {
    background: #FFF3E0;
    border-left-color: var(--orange);
}

.alert-item.error {
    background: #FFEBEE;
    border-left-color: var(--red);
}

.alert-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 4px;
}

.alert-title {
    font-weight: 600;
    color: var(--text-primary);
}

.alert-time {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.alert-message {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.alerts-empty {
    text-align: center;
    padding: var(--spacing-xl);
    color: var(--light-green);
}

.alerts-empty i {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
}

/* ===================================
   控制中心布局
   =================================== */
.control-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
}

.devices-control-panel {
    grid-column: 1 / 2;
}

.control-right {
    grid-column: 2 / 3;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.execution-panel {
    /* 不需要grid-column，在control-right内部 */
}

.header-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.queue-badge {
    background: rgba(255, 255, 255, 0.2);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-md);
    font-size: 0.9rem;
}

/* 控制中心队列可视化 */
.control-queue-panel {
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    overflow: hidden;
}

.queue-info-badge {
    background: rgba(255, 255, 255, 0.25);
    padding: 6px 12px;
    border-radius: var(--radius-md);
    font-size: 0.85rem;
    font-weight: 600;
    color: white;
}

.queue-description {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    background: white;
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
}

.queue-description i {
    color: var(--primary-green);
    font-size: 1.1rem;
}

.queue-description p {
    margin: 0;
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.5;
}

.highlight-text {
    color: var(--primary-green);
    font-weight: 700;
    padding: 2px 6px;
    background: rgba(46, 125, 50, 0.1);
    border-radius: 4px;
}

.control-queue-container {
    min-height: 300px;
    max-height: 500px;
    overflow-y: auto;
    overflow-x: hidden;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    padding: 20px 8px;
    position: relative;
    
    /* 管道外观 - 圆柱形渐变 */
    background: 
        linear-gradient(to right, 
            rgba(129, 199, 132, 0.3) 0%, 
            rgba(255, 255, 255, 0.1) 15%, 
            transparent 30%,
            transparent 70%,
            rgba(255, 255, 255, 0.1) 85%,
            rgba(129, 199, 132, 0.3) 100%
        ),
        linear-gradient(to bottom, 
            #f1f8e9 0%, 
            #f9fbe7 50%, 
            #f1f8e9 100%
        );
    
    /* 管道边框 */
    border-left: 5px solid #66BB6A;
    border-right: 5px solid #66BB6A;
    border-radius: 12px;
    
    /* 管道内阴影 - 增强立体感 */
    box-shadow: 
        inset 0 6px 12px rgba(0, 0, 0, 0.08),
        inset 0 -6px 12px rgba(0, 0, 0, 0.08),
        inset 6px 0 16px rgba(0, 0, 0, 0.06),
        inset -6px 0 16px rgba(0, 0, 0, 0.06),
        0 2px 8px rgba(0, 0, 0, 0.1);
}

/* 自定义滚动条 - 融入管道设计 */
.control-queue-container::-webkit-scrollbar {
    width: 8px;
}

.control-queue-container::-webkit-scrollbar-track {
    background: rgba(129, 199, 132, 0.1);
    border-radius: 4px;
}

.control-queue-container::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, #81C784 0%, #66BB6A 100%);
    border-radius: 4px;
}

.control-queue-container::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(180deg, #66BB6A 0%, #4CAF50 100%);
}

/* 管道包装器 */
.pipe-wrapper {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 0;
}

/* 管道标记样式 */
.pipe-label {
    text-align: center;
    padding: 6px 16px;
    font-size: 0.8rem;
    font-weight: 700;
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    letter-spacing: 0.5px;
    position: relative;
    z-index: 5;
}

.pipe-label i {
    font-size: 0.9rem;
    animation: bounce 2s ease-in-out infinite;
}

/* 队尾入口标记 */
.pipe-label-tail {
    background: linear-gradient(135deg, #FF9800 0%, #F57C00 100%);
    border-radius: 8px 8px 0 0;
    box-shadow: 
        0 -2px 8px rgba(255, 152, 0, 0.3),
        inset 0 1px 2px rgba(255, 255, 255, 0.3);
    border-top: 2px solid #FFB74D;
}

/* 队头出口标记 */
.pipe-label-head {
    background: linear-gradient(135deg, #2196F3 0%, #1976D2 100%);
    border-radius: 0 0 8px 8px;
    box-shadow: 
        0 2px 8px rgba(33, 150, 243, 0.3),
        inset 0 -1px 2px rgba(255, 255, 255, 0.3);
    border-bottom: 2px solid #64B5F6;
}

/* 箭头动画 */
@keyframes bounce {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-3px);
    }
}

/* 队尾入口闪烁提示 */
.pipe-label-tail.entrance-flash {
    animation: entranceFlash 0.5s ease-out;
    will-change: transform;
}

@keyframes entranceFlash {
    0%, 100% {
        transform: scale3d(1, 1, 1);
        box-shadow: 
            0 -2px 8px rgba(255, 152, 0, 0.3),
            inset 0 1px 2px rgba(255, 255, 255, 0.3);
    }
    50% {
        transform: scale3d(1.05, 1.05, 1);
        box-shadow: 
            0 -4px 20px rgba(255, 152, 0, 0.7),
            0 0 25px rgba(255, 152, 0, 0.5),
            inset 0 1px 2px rgba(255, 255, 255, 0.5);
    }
}

.queue-empty-hint {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    color: var(--text-secondary);
    opacity: 0.6;
}

.queue-empty-hint i {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
    color: #bdbdbd;
}

.queue-empty-hint p {
    margin: var(--spacing-xs) 0;
    font-size: 1rem;
    font-weight: 600;
}

.queue-empty-hint small {
    font-size: 0.85rem;
    color: #999;
}

/* 队列任务卡片 - 管道中的流动元素 */
.control-queue-item {
    background: white;
    border: 3px solid var(--primary-green);
    border-radius: 10px;
    padding: var(--spacing-sm);
    margin: 0 6px; /* 留出空间显示管道壁 */
    box-shadow: 
        0 2px 8px rgba(0, 0, 0, 0.1),
        inset 0 1px 2px rgba(255, 255, 255, 0.8);
    transition: all 0.3s ease;
    position: relative;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    
    /* 3D立体效果 */
    transform-style: preserve-3d;
}

/* 入队动画 - 从队尾（底部）进入 */
.control-queue-item.enqueuing {
    animation: taskEnqueueFromTail 0.5s cubic-bezier(0.4, 0.0, 0.2, 1);
    will-change: transform, opacity;
}

@keyframes taskEnqueueFromTail {
    0% {
        opacity: 0;
        transform: translate3d(0, 100px, 0) scale(0.8);
    }
    70% {
        opacity: 1;
        transform: translate3d(0, -5px, 0) scale(1.02);
    }
    100% {
        opacity: 1;
        transform: translate3d(0, 0, 0) scale(1);
    }
}

/* 出队动画 - 队首元素缓慢向上移动并淡出消失 */
.control-queue-item.dequeuing {
    animation: taskDequeueSlideUp 0.8s cubic-bezier(0.4, 0.0, 0.2, 1) forwards;
    z-index: 1; /* 确保在其他元素下方 */
}

@keyframes taskDequeueSlideUp {
    0% {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
    70% {
        opacity: 0.3;
        transform: translateY(-60px) scale(0.95);
    }
    100% {
        opacity: 0;
        transform: translateY(-80px) scale(0.9);
    }
}

/* 其他元素向上移动动画 - 填补队头空缺 */
.control-queue-item.moving-up {
    animation: taskMoveUpSmooth 0.8s cubic-bezier(0.4, 0.0, 0.2, 1) forwards;
}

@keyframes taskMoveUpSmooth {
    0% {
        transform: translateY(0);
    }
    100% {
        transform: translateY(-72px); /* 向上移动一个卡片的高度+间距 */
    }
}

.control-queue-item.head {
    border-color: var(--blue);
    border-width: 4px;
    box-shadow: 
        0 0 0 4px rgba(33, 150, 243, 0.15),
        0 4px 12px rgba(33, 150, 243, 0.3),
        inset 0 1px 2px rgba(255, 255, 255, 0.9);
    background: linear-gradient(135deg, #E3F2FD 0%, white 100%);
}

.control-queue-item.tail {
    border-color: var(--orange);
    border-width: 4px;
    box-shadow: 
        0 0 0 4px rgba(255, 152, 0, 0.15),
        0 4px 12px rgba(255, 152, 0, 0.3),
        inset 0 1px 2px rgba(255, 255, 255, 0.9);
    background: linear-gradient(135deg, #FFF3E0 0%, white 100%);
}

.control-queue-item.executing {
    animation: executing 1.5s infinite;
    border-color: var(--primary-green);
    background: white;
}

@keyframes executing {
    0%, 100% {
        box-shadow: 0 0 0 0 rgba(46, 125, 50, 0.7);
    }
    50% {
        box-shadow: 0 0 0 8px rgba(46, 125, 50, 0);
    }
}

.queue-item-badge {
    background: var(--primary-green);
    color: white;
    padding: 4px 10px;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    white-space: nowrap;
}

.queue-item-badge.head-badge {
    background: var(--blue);
}

.queue-item-badge.tail-badge {
    background: var(--orange);
}

.queue-item-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.queue-item-device {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 6px;
}

.queue-item-device i {
    color: var(--primary-green);
}

.queue-item-command {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.queue-item-priority {
    padding: 2px 8px;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
    white-space: nowrap;
}

.queue-item-priority.priority-high {
    background: #FFEBEE;
    color: var(--red);
}

.queue-item-priority.priority-medium {
    background: #FFF3E0;
    color: var(--orange);
}

.queue-item-priority.priority-low {
    background: #E3F2FD;
    color: var(--blue);
}

.execution-info {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.info-card {
    background: var(--bg-green);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.info-card i {
    font-size: 2rem;
    color: var(--primary-green);
}

.info-text {
    display: flex;
    flex-direction: column;
}

.info-text .label {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.info-text .value {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary-green);
}

.execution-controls {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.btn-execute-large {
    background: linear-gradient(135deg, #FF6B35 0%, #F7931E 100%);
    color: white;
    font-size: 1.1rem;
    font-weight: 600;
    padding: var(--spacing-md);
}

.btn-execute-large:hover:not(:disabled) {
    background: linear-gradient(135deg, #F7931E 0%, #FF6B35 100%);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

.btn-pause:hover:not(:disabled) {
    background: #F57C00;
}

.execution-log h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.log-list {
    max-height: 400px;
    overflow-y: auto;
    background: var(--bg-green);
    border-radius: var(--radius-md);
    padding: var(--spacing-sm);
}

.log-item {
    background: white;
    border-left: 3px solid var(--primary-green);
    border-radius: var(--radius-sm);
    padding: var(--spacing-sm);
    margin-bottom: var(--spacing-xs);
    font-size: 0.9rem;
    animation: slideIn 0.3s ease;
}

.log-item .log-time {
    color: var(--text-secondary);
    font-size: 0.75rem;
}

.log-item .log-message {
    color: var(--text-primary);
    margin-top: 4px;
}

.log-empty {
    text-align: center;
    padding: var(--spacing-lg);
    color: var(--text-secondary);
}

.log-empty i {
    font-size: 2rem;
    color: var(--border-grey);
    margin-bottom: var(--spacing-xs);
}

/* ===================================
   算法可视化布局
   =================================== */
.algorithm-layout {
    display: grid;
    grid-template-columns: 2.5fr 380px; /* 左侧占2.5份，适度宽度 */
    gap: var(--spacing-lg);
}

.algorithm-left {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    min-width: 900px; /* 设置最小宽度，确保可视化面板有足够空间 */
}

.algorithm-right {
    position: relative;
}

/* 通用面板样式 */
.control-panel,
.devices-panel {
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    transition: var(--transition);
}

/* visualization-panel需要特殊处理，不能隐藏overflow，否则会裁剪指针标识 */
.visualization-panel {
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    overflow: visible; /* 改为visible，确保head和tail指针不被裁剪 */
    transition: var(--transition);
    min-width: 900px; /* 设置最小宽度，与数组队列宽度保持一致 */
}

.control-panel:hover,
.visualization-panel:hover,
.devices-panel:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.panel-header {
    background: linear-gradient(135deg, var(--light-green) 0%, var(--primary-green) 100%);
    color: var(--text-white);
    padding: var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.panel-header h2 {
    font-size: 1.2rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.panel-content {
    padding: var(--spacing-md);
}

/* ===================================
   控制面板
   =================================== */
.control-group {
    margin-bottom: var(--spacing-md);
}

.control-group:last-child {
    margin-bottom: 0;
}

.control-group label {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.control-group label i {
    color: var(--primary-green);
}

/* 切换按钮组 */
.toggle-switch-group {
    display: flex;
    gap: var(--spacing-sm);
}

.toggle-btn {
    flex: 1;
    padding: var(--spacing-sm);
    border: 2px solid var(--border-grey);
    background: white;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition);
    font-weight: 500;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
}

.toggle-btn:hover {
    border-color: var(--light-green);
    background: var(--bg-green);
}

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

/* 操作按钮 */
.action-buttons,
.demo-controls {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-sm);
}

.action-buttons-single,
.execution-buttons {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-sm);
}

.btn {
    padding: var(--spacing-sm) var(--spacing-md);
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    font-weight: 500;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    font-size: 0.95rem;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-success {
    background: var(--light-green);
    color: white;
}

.btn-success:hover:not(:disabled) {
    background: var(--primary-green);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

.btn-primary:hover:not(:disabled) {
    background: #1565C0;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-info {
    background: #00ACC1;
    color: white;
}

.btn-info:hover:not(:disabled) {
    background: #00838F;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-danger {
    background: var(--red);
    color: white;
}

.btn-danger:hover:not(:disabled) {
    background: #C62828;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-demo {
    background: var(--purple);
    color: white;
}

.btn-demo:hover:not(:disabled) {
    background: #6A1B9A;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-execute {
    background: linear-gradient(135deg, #FF6B35 0%, #F7931E 100%);
    color: white;
    font-size: 1rem;
    font-weight: 600;
}

.btn-execute:hover:not(:disabled) {
    background: linear-gradient(135deg, #F7931E 0%, #FF6B35 100%);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-step-execute {
    background: linear-gradient(135deg, #9C27B0 0%, #7B1FA2 100%);
    color: white;
    font-size: 1rem;
    font-weight: 600;
}

.btn-step-execute:hover:not(:disabled) {
    background: linear-gradient(135deg, #7B1FA2 0%, #6A1B9A 100%);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-reset {
    background: linear-gradient(135deg, #FF9800 0%, #F57C00 100%);
    color: white;
    font-size: 1rem;
    font-weight: 600;
}

.btn-reset:hover:not(:disabled) {
    background: linear-gradient(135deg, #F57C00 0%, #E65100 100%);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: var(--grey);
    color: white;
}

.btn-secondary:hover:not(:disabled) {
    background: #616161;
}

/* ===================================
   队列可视化
   =================================== */
.queue-info {
    display: flex;
    gap: var(--spacing-sm);
}

.info-badge {
    background: rgba(255, 255, 255, 0.2);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    backdrop-filter: blur(10px);
}

.queue-visualization {
    min-height: 350px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    padding: 80px var(--spacing-md) 80px; /* 增加上下内边距，确保指针有足够显示空间 */
    background: white;
    border-radius: var(--radius-md);
    overflow-x: auto;
    overflow-y: visible; /* 确保上下方向的指针标识可见 */
    position: relative;
    transform: translateZ(0); /* 启用硬件加速 */
    perspective: 1000px; /* 3D透视效果 */
}

/* 数组队列格子样式 */
.array-slot {
    width: 168px; /* 固定宽度，与链式队列节点保持一致，缩小30% */
    height: 180px;
    border: 2px solid var(--border-grey);
    border-radius: var(--radius-md);
    padding: var(--spacing-sm);
    background: white;
    box-shadow: var(--shadow-sm);
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
    position: relative;
    backface-visibility: hidden; /* 防止闪烁 */
    transform: translateZ(0); /* 启用硬件加速 */
    animation: slotFadeIn 0.3s ease-out; /* 入场动画 */
}

/* 动画期间才启用will-change，避免过度优化 */
.array-slot.swapping-left,
.array-slot.swapping-right {
    will-change: transform, opacity;
}

@keyframes slotFadeIn {
    from {
        opacity: 0;
        transform: translate3d(0, 10px, 0);
    }
    to {
        opacity: 1;
        transform: translate3d(0, 0, 0);
    }
}

.array-slot.empty {
    background: repeating-linear-gradient(
        45deg,
        #fafafa,
        #fafafa 10px,
        #f0f0f0 10px,
        #f0f0f0 20px
    );
    border: 2px dashed #bdbdbd;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.array-slot.empty .slot-empty-icon {
    font-size: 2.5rem;
    color: #bdbdbd;
    margin-top: var(--spacing-sm);
}

.slot-index {
    position: absolute;
    top: 4px;
    left: 8px;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-secondary);
    background: white;
    padding: 2px 6px;
    border-radius: 4px;
}

.array-slot.empty .slot-index {
    background: transparent;
}

.array-slot.task {
    background: white;
    border-color: var(--primary-green);
}

.array-slot.task.head {
    border-color: var(--blue);
    border-width: 3px;
}

.array-slot.task.tail {
    border-color: var(--orange);
    border-width: 3px;
}

/* 交换动画 - Apple 风格优雅动效 */
.array-slot.swapping-left {
    animation: swapLeft 0.65s cubic-bezier(0.25, 0.1, 0.25, 1) forwards;
    z-index: 5;
}

.array-slot.swapping-right {
    animation: swapRight 0.65s cubic-bezier(0.25, 0.1, 0.25, 1) forwards;
    z-index: 10;
}

@keyframes swapLeft {
    0% {
        transform: translate3d(0, 0, 0) scale(1);
        opacity: 1;
        box-shadow: 0 2px 8px rgba(0,0,0,0.1);
        filter: blur(0px) brightness(1);
    }
    25% {
        transform: translate3d(-45px, -30px, 0) scale(0.92); /* 65*0.7≈45 */
        opacity: 0.7;
        box-shadow: 0 8px 24px rgba(0,0,0,0.15);
        filter: blur(0.8px) brightness(0.95);
    }
    50% {
        transform: translate3d(-91px, -35px, 0) scale(0.88); /* 130*0.7≈91 */
        opacity: 0.6;
        box-shadow: 0 12px 32px rgba(0,0,0,0.2);
        filter: blur(1.2px) brightness(0.9);
    }
    75% {
        transform: translate3d(-137px, -20px, 0) scale(0.94); /* 195*0.7≈137 */
        opacity: 0.75;
        box-shadow: 0 6px 20px rgba(0,0,0,0.12);
        filter: blur(0.6px) brightness(0.98);
    }
    100% {
        transform: translate3d(-182px, 0, 0) scale(1); /* 260*0.7=182 */
        opacity: 1;
        box-shadow: 0 2px 8px rgba(0,0,0,0.1);
        filter: blur(0px) brightness(1);
    }
}

@keyframes swapRight {
    0% {
        transform: translate3d(0, 0, 0) scale(1);
        opacity: 1;
        box-shadow: 0 2px 8px rgba(0,0,0,0.1);
        filter: blur(0px) brightness(1);
    }
    25% {
        transform: translate3d(45px, 25px, 0) scale(1.06); /* 65*0.7≈45 */
        opacity: 0.95;
        box-shadow: 0 10px 28px rgba(0,0,0,0.18);
        filter: blur(0.5px) brightness(1.05);
    }
    50% {
        transform: translate3d(91px, 32px, 0) scale(1.08); /* 130*0.7≈91 */
        opacity: 0.9;
        box-shadow: 0 14px 36px rgba(0,0,0,0.22);
        filter: blur(0.8px) brightness(1.08);
    }
    75% {
        transform: translate3d(137px, 18px, 0) scale(1.04); /* 195*0.7≈137 */
        opacity: 0.95;
        box-shadow: 0 8px 22px rgba(0,0,0,0.14);
        filter: blur(0.4px) brightness(1.03);
    }
    100% {
        transform: translate3d(182px, 0, 0) scale(1); /* 260*0.7=182 */
        opacity: 1;
        box-shadow: 0 2px 8px rgba(0,0,0,0.1);
        filter: blur(0px) brightness(1);
    }
}

.queue-empty-state {
    width: 100%;
    text-align: center;
    padding: var(--spacing-xl);
    color: var(--text-secondary);
}

.queue-empty-state i {
    font-size: 4rem;
    color: var(--border-grey);
    margin-bottom: var(--spacing-sm);
}

.queue-empty-state p {
    font-size: 1.2rem;
    font-weight: 500;
    margin-bottom: var(--spacing-xs);
}

.queue-empty-state small {
    font-size: 0.9rem;
}

/* head和tail指针标识 */
.pointer-indicator {
    position: absolute;
    top: -50px; /* 增加距离，确保不被遮挡 */
    left: 50%;
    transform: translateX(-50%);
    background: var(--blue);
    color: white;
    padding: 8px 14px; /* 增大一点，更显眼 */
    border-radius: 6px;
    font-size: 0.9rem; /* 稍微大一点 */
    font-weight: 600;
    white-space: nowrap;
    box-shadow: 0 4px 12px rgba(0,0,0,0.2); /* 增强阴影 */
    z-index: 100; /* 大幅增加z-index确保在最上层 */
}

.pointer-indicator::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 0;
    border-left: 8px solid transparent;
    border-right: 8px solid transparent;
    border-top: 8px solid var(--blue);
}

.pointer-indicator.head-pointer {
    background: var(--blue);
}

.pointer-indicator.head-pointer::after {
    border-top-color: var(--blue);
}

.pointer-indicator.tail-pointer {
    background: var(--orange);
    top: auto;
    bottom: -50px; /* 增加距离，确保不被遮挡 */
}

.pointer-indicator.tail-pointer::after {
    bottom: auto;
    top: -8px;
    border-top: none;
    border-bottom: 8px solid var(--orange);
}

.pointer-indicator.both-pointer {
    background: var(--purple);
}

.pointer-indicator.both-pointer::after {
    border-top-color: var(--purple);
}

/* 指针移动动画 */
@keyframes pointerMove {
    0% {
        opacity: 1;
    }
    50% {
        opacity: 0.3;
        transform: translateX(-50%) scale(1.2);
    }
    100% {
        opacity: 1;
        transform: translateX(-50%) scale(1);
    }
}

.pointer-indicator.moving {
    animation: pointerMove 0.6s ease;
}

/* 队列节点样式 */
.queue-node {
    min-width: 168px; /* 240px * 0.7 = 168px，缩小30% */
    width: 168px; /* 固定宽度，与数组槽位保持一致 */
    background: white;
    border: 2px solid var(--primary-green);
    border-radius: var(--radius-md);
    padding: 0;
    box-shadow: var(--shadow-sm);
    position: relative;
    animation: nodeEnter 0.5s ease;
    overflow: visible; /* 改为visible，确保指针标识不被裁剪 */
    z-index: 1; /* 确保节点有正确的堆叠层级 */
}

/* 链式队列节点结构 */
.node-data-section {
    padding: var(--spacing-sm);
    background: white;
    border-bottom: 2px dashed var(--border-grey);
}

.node-pointer-section {
    padding: var(--spacing-xs) var(--spacing-sm);
    background: white;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 0.85rem;
    color: var(--text-secondary);
    min-height: 32px;
}

.node-pointer-section i {
    color: var(--primary-green);
}

.pointer-address {
    font-family: 'Courier New', monospace;
    font-weight: 600;
    color: var(--blue);
}

@keyframes nodeEnter {
    from {
        opacity: 0;
        transform: translateY(-20px) scale(0.8);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

@keyframes nodeDequeue {
    0% {
        opacity: 1;
        transform: translateX(0) scale(1);
    }
    50% {
        opacity: 0.5;
        transform: translateX(-30px) scale(0.9);
        background: #FFEBEE;
        border-color: var(--red);
    }
    100% {
        opacity: 0;
        transform: translateX(-60px) scale(0.7);
    }
}

@keyframes nodeShiftLeft {
    0% {
        transform: translateX(0);
        opacity: 1;
    }
    50% {
        transform: translateX(-120px);
        opacity: 0.5;
        background: white;
    }
    100% {
        transform: translateX(-240px);
        opacity: 1;
    }
}

.queue-node.dequeuing {
    animation: nodeDequeue 0.8s ease-out forwards;
}

.queue-node.shifting {
    animation: nodeShiftLeft 0.6s ease-out forwards;
}

.queue-node.head {
    border-color: var(--blue);
    border-width: 3px;
}

.queue-node.tail {
    border-color: var(--orange);
    border-width: 3px;
}

.queue-node.processing {
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0%, 100% {
        box-shadow: 0 0 0 0 rgba(46, 125, 50, 0.7);
    }
    50% {
        box-shadow: 0 0 0 10px rgba(46, 125, 50, 0);
    }
}

.node-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xs);
}

.node-label {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    padding: 2px 8px;
    border-radius: var(--radius-sm);
    color: white;
}

.node-label.head {
    background: var(--blue);
}

.node-label.tail {
    background: var(--orange);
}

.priority-badge {
    font-size: 0.75rem;
    padding: 2px 8px;
    border-radius: var(--radius-sm);
    font-weight: 600;
}

.priority-high {
    background: #FFEBEE;
    color: var(--red);
}

.priority-medium {
    background: #FFF3E0;
    color: var(--orange);
}

.priority-low {
    background: #E3F2FD;
    color: var(--blue);
}

.node-content {
    font-size: 0.85rem;
}

.node-content .device-name {
    font-weight: 600;
    color: var(--primary-green);
    margin-bottom: 4px;
}

.node-content .command-text {
    color: var(--text-secondary);
    font-size: 0.8rem;
}

.node-arrow {
    color: var(--primary-green);
    font-size: 2rem;
    display: flex;
    align-items: center;
}

/* ===================================
   设备状态面板
   =================================== */
.devices-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: var(--spacing-sm);
}

.device-card {
    background: var(--bg-green);
    border: 2px solid var(--border-grey);
    border-radius: var(--radius-md);
    padding: var(--spacing-sm);
    transition: var(--transition);
    cursor: pointer;
    position: relative;
}

.device-card:hover {
    border-color: var(--primary-green);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

.device-card.online {
    border-color: var(--light-green);
}

.device-card.offline {
    border-color: var(--grey);
    opacity: 0.7;
}

.device-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xs);
}

.device-icon {
    width: 36px;
    height: 36px;
    background: var(--primary-green);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

.device-status {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 0.75rem;
    font-weight: 600;
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.status-dot.online {
    background: var(--light-green);
    box-shadow: 0 0 8px var(--light-green);
}

.status-dot.offline {
    background: var(--grey);
}

.device-name {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.device-location {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

/* ===================================
   右侧步骤面板 (Sticky固定)
   =================================== */
.right-panel {
    position: relative;
}

.steps-container {
    position: sticky;
    top: calc(80px + var(--spacing-md));
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    max-height: calc(100vh - 180px);
    display: flex;
    flex-direction: column;
}

.btn-icon {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    color: white;
    width: 32px;
    height: 32px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.steps-stats {
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-green);
    border-bottom: 2px solid var(--border-grey);
    display: flex;
    justify-content: space-between;
    gap: var(--spacing-sm);
}

.stat-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.stat-item i {
    color: var(--primary-green);
}

.stat-item strong {
    color: var(--text-primary);
    font-weight: 600;
}

.steps-list {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-sm);
}

.steps-empty-state {
    text-align: center;
    padding: var(--spacing-xl);
    color: var(--text-secondary);
}

.steps-empty-state i {
    font-size: 3rem;
    color: var(--border-grey);
    margin-bottom: var(--spacing-sm);
}

.steps-empty-state p {
    font-size: 1rem;
}

.step-item {
    background: var(--bg-green);
    border-left: 4px solid var(--primary-green);
    border-radius: var(--radius-sm);
    padding: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    animation: stepEnter 0.4s ease;
}

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

.step-item.enqueue {
    border-left-color: var(--light-green);
}

.step-item.execute {
    border-left-color: #FF6B35;
    background: linear-gradient(90deg, #FFF3E0 0%, var(--bg-green) 100%);
}

.step-item.shift {
    border-left-color: #9C27B0;
    background: linear-gradient(90deg, #F3E5F5 0%, var(--bg-green) 100%);
}

.step-item.peek {
    border-left-color: #00ACC1;
}

.step-item.clear {
    border-left-color: var(--red);
}

.step-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xs);
}

.step-number {
    font-weight: 700;
    color: var(--primary-green);
}

.step-time {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.step-operation {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.step-details {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* ===================================
   模态框
   =================================== */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(5px);
    z-index: 2000;
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: white;
    border-radius: var(--radius-lg);
    width: 85%;
    max-width: 480px;
    box-shadow: var(--shadow-lg);
    animation: modalEnter 0.3s ease;
    flex-shrink: 0;
}

@keyframes modalEnter {
    from {
        opacity: 0;
        transform: scale(0.9) translateY(-20px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

.modal-header {
    background: linear-gradient(135deg, var(--light-green) 0%, var(--primary-green) 100%);
    color: white;
    padding: var(--spacing-md);
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.modal-close {
    background: none;
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.modal-close:hover {
    background: rgba(255, 255, 255, 0.2);
}

.modal-body {
    padding: var(--spacing-md);
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-weight: 500;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

.form-group label i {
    color: var(--primary-green);
}

.form-control {
    width: 100%;
    padding: var(--spacing-sm);
    border: 2px solid var(--border-grey);
    border-radius: var(--radius-md);
    font-family: inherit;
    font-size: 0.95rem;
    transition: var(--transition);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-green);
    box-shadow: 0 0 0 3px rgba(46, 125, 50, 0.1);
}

.modal-footer {
    padding: var(--spacing-md);
    background: var(--light-grey);
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-sm);
}

/* 设备信息卡片 */
.device-info-card {
    background: var(--bg-green);
    border-radius: var(--radius-md);
    padding: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.info-row {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-xs);
    color: var(--text-secondary);
}

.info-row:last-child {
    margin-bottom: 0;
}

.info-row i {
    color: var(--primary-green);
    width: 20px;
}

/* 操作选择网格 */
.operations-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-sm);
}

.operation-btn {
    background: white;
    border: 2px solid var(--border-grey);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
}

.operation-btn:hover {
    border-color: var(--primary-green);
    background: var(--bg-green);
    transform: translateY(-2px);
}

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

.operation-btn i {
    font-size: 1.5rem;
    display: block;
    margin-bottom: var(--spacing-xs);
}

.operation-btn .op-name {
    font-size: 0.9rem;
    font-weight: 500;
}

/* ===================================
   页脚
   =================================== */
.main-footer {
    background: var(--dark-green);
    color: var(--text-white);
    padding: var(--spacing-md);
    text-align: center;
    margin-top: auto;
}

.main-footer p {
    font-size: 0.9rem;
}

/* ===================================
   响应式设计
   =================================== */
@media (max-width: 1400px) {
    .algorithm-layout {
        grid-template-columns: 2fr 320px;
    }
    
    .algorithm-left {
        min-width: 700px; /* 中等屏幕减小最小宽度 */
    }
    
    .visualization-panel {
        min-width: 700px;
    }
    
    .monitoring-layout {
        grid-template-columns: 1fr;
    }
    
    .control-layout {
        grid-template-columns: 1fr;
    }
    
    .control-right {
        grid-column: 1;
    }
    
    .alerts-panel {
        grid-column: 1;
        grid-row: auto;
    }
    
    .execution-panel {
        grid-column: 1;
    }
}

@media (max-width: 992px) {
    .algorithm-layout {
        grid-template-columns: 1fr;
    }
    
    .algorithm-left {
        min-width: auto; /* 小屏幕移除最小宽度限制 */
    }
    
    .visualization-panel {
        min-width: auto;
    }
    
    .steps-container {
        position: static;
        max-height: 500px;
    }
    
    .devices-grid {
        grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    }
    
    .sensors-grid {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    }
}

@media (max-width: 768px) {
    .header-container {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-md);
    }
    
    .logo-section {
        justify-content: center;
    }
    
    .logo-section h1 {
        font-size: 1.2rem;
    }
    
    .tab-navigation {
        width: 100%;
        overflow-x: auto;
        justify-content: flex-start;
    }
    
    .tab-btn {
        white-space: nowrap;
        padding: var(--spacing-xs) var(--spacing-md);
        font-size: 0.9rem;
    }
    
    .header-status {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .action-buttons,
    .demo-controls,
    .execution-buttons {
        grid-template-columns: 1fr;
    }
    
    .devices-grid {
        grid-template-columns: 1fr;
    }
    
    .sensors-grid {
        grid-template-columns: 1fr;
    }
    
    .queue-visualization {
        flex-direction: column;
        align-items: stretch;
    }
    
    .queue-node {
        min-width: auto;
    }
    
    .node-arrow {
        transform: rotate(90deg);
    }
    
    .execution-info {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 576px) {
    .main-container {
        padding: var(--spacing-sm);
        gap: var(--spacing-sm);
    }
    
    .toggle-switch-group {
        flex-direction: column;
    }
}

/* ===================================
   滚动条样式
   =================================== */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--light-grey);
}

::-webkit-scrollbar-thumb {
    background: var(--primary-green);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--dark-green);
}

/* ===================================
   动画工具类
   =================================== */
.fade-in {
    animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.shake {
    animation: shake 0.5s ease;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    10%, 30%, 50%, 70%, 90% { transform: translateX(-5px); }
    20%, 40%, 60%, 80% { transform: translateX(5px); }
}

@keyframes executePopup {
    0% {
        opacity: 0;
        transform: translate(-50%, -50%) scale(0.5);
    }
    50% {
        transform: translate(-50%, -50%) scale(1.1);
    }
    100% {
        opacity: 1;
        transform: translate(-50%, -50%) scale(1);
    }
}

@keyframes executePopupOut {
    from {
        opacity: 1;
        transform: translate(-50%, -50%) scale(1);
    }
    to {
        opacity: 0;
        transform: translate(-50%, -50%) scale(0.8);
    }
}