/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-green: #2ecc71;
    --dark-green: #27ae60;
    --light-green: #a8e6cf;
    --accent-green: #52c98f;
    --bg-light: #f8fdf9;
    --bg-white: #ffffff;
    --text-dark: #2c3e50;
    --text-light: #7f8c8d;
    --border-color: #dfe6e9;
    --shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
    --shadow-hover: 0 4px 20px rgba(46, 204, 113, 0.15);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    background: var(--bg-light);
    color: var(--text-dark);
    line-height: 1.6;
}

/* 顶部导航栏 */
.header {
    background: var(--bg-white);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-content {
    max-width: 1600px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--primary-green);
}

.logo i {
    font-size: 1.8rem;
}

.tabs {
    display: flex;
    gap: 0.5rem;
    flex: 1;
    justify-content: center;
}

.tab-btn {
    background: none;
    border: none;
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    color: var(--text-light);
    cursor: pointer;
    transition: all 0.3s;
    border-radius: 8px;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

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

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

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

/* 用户切换 */
/* 算法模式切换 */
.algorithm-mode-switch {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.mode-btn {
    padding: 0.6rem 1.2rem;
    border: 2px solid var(--border-color);
    background: var(--bg-white);
    color: var(--text-dark);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s;
    font-size: 0.9rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

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

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

.user-switch {
    position: relative;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.6rem 1.2rem;
    background: var(--light-green);
    border-radius: 25px;
    cursor: pointer;
    transition: all 0.3s;
}

.user-info:hover {
    background: var(--accent-green);
    color: white;
}

.user-dropdown {
    position: absolute;
    top: calc(100% + 10px);
    right: 0;
    background: var(--bg-white);
    border-radius: 8px;
    box-shadow: var(--shadow);
    min-width: 180px;
    display: none;
    z-index: 100;
}

.user-dropdown.show {
    display: block;
}

.dropdown-item {
    padding: 0.75rem 1rem;
    cursor: pointer;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.dropdown-item:hover {
    background: var(--bg-light);
    color: var(--primary-green);
}

.dropdown-item:first-child {
    border-radius: 8px 8px 0 0;
}

.dropdown-item:last-child {
    border-radius: 0 0 8px 8px;
}

/* 主内容区域 */
.main-content {
    max-width: 1600px;
    margin: 2rem auto;
    padding: 0 2rem;
}

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

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

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

/* 实时监控 */
.monitor-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 1.5rem;
}

.monitor-card {
    background: var(--bg-white);
    border-radius: 12px;
    box-shadow: var(--shadow);
    overflow: hidden;
    transition: all 0.3s;
}

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

.monitor-card.full-width {
    grid-column: 1 / -1;
}

.card-header {
    background: linear-gradient(135deg, var(--primary-green), var(--dark-green));
    color: white;
    padding: 1rem 1.5rem;
}

.card-header h3 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.1rem;
}

.card-body {
    padding: 1.5rem;
    height: 350px;
}

.monitor-card.full-width .card-body {
    height: 400px;
}

/* 设备管理 */
.device-container {
    background: var(--bg-white);
    border-radius: 12px;
    box-shadow: var(--shadow);
    padding: 2rem;
}

.device-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--border-color);
}

.device-header h2 {
    color: var(--primary-green);
}

.info-badge {
    background: var(--light-green);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.95rem;
}

.device-tree {
    padding: 1rem;
}

.tree-node {
    margin: 0.5rem 0;
}

.tree-node-content {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s;
    position: relative;
}

.tree-node-content:hover {
    background: var(--bg-light);
}

.tree-node-content.clicked {
    background: var(--light-green);
    animation: clickEffect 0.4s;
}

@keyframes clickEffect {
    0% { transform: scale(1); }
    50% { transform: scale(1.02); }
    100% { transform: scale(1); }
}

.tree-node-icon {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-green);
}

.tree-node-label {
    flex: 1;
    font-weight: 500;
}

.tree-toggle {
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.3s;
}

.tree-toggle.expanded {
    transform: rotate(90deg);
}

.tree-children {
    margin-left: 2rem;
    border-left: 2px solid var(--border-color);
    padding-left: 1rem;
    display: none;
}

.tree-children.show {
    display: block;
}

/* 扁平化设备列表 */
.device-list {
    padding: 1rem;
}

.device-list-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1rem;
}

.device-card {
    background: var(--bg-white);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    padding: 1rem;
    transition: all 0.3s;
    cursor: pointer;
}

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

.device-card.clicked {
    background: var(--light-green);
    animation: clickEffect 0.4s;
}

.device-card-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
}

.device-card-icon {
    width: 40px;
    height: 40px;
    background: var(--light-green);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-green);
    font-size: 1.2rem;
}

.device-card-title {
    flex: 1;
    font-weight: 600;
    font-size: 1.05rem;
    color: var(--text-dark);
}

.device-card-path {
    color: var(--text-light);
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.device-card-id {
    color: #95a5a6;
    font-size: 0.85rem;
    font-family: 'Courier New', monospace;
}

/* 算法演示 */
.algorithm-container {
    background: var(--bg-white);
    border-radius: 12px;
    box-shadow: var(--shadow);
    padding: 2rem;
}

.algorithm-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--border-color);
}

.algorithm-header h2 {
    color: var(--primary-green);
}

.algorithm-tabs {
    display: flex;
    gap: 0.5rem;
}

.algo-tab-btn {
    padding: 0.6rem 1.5rem;
    border: 2px solid var(--border-color);
    background: var(--bg-white);
    color: var(--text-dark);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s;
    font-size: 0.95rem;
    font-weight: 500;
}

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

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

.algorithm-content {
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: 2rem;
    min-height: 600px;
}

/* 可视化面板 */
.visualization-panel {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.demo-controls {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.device-selector {
    padding: 0.75rem 1rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    background: var(--bg-white);
    cursor: pointer;
    transition: all 0.3s;
}

.device-selector:focus {
    outline: none;
    border-color: var(--primary-green);
}

.control-buttons {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.speed-control {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.5rem 1rem;
    background: var(--bg-light);
    border-radius: 8px;
    border: 2px solid var(--border-color);
}

.speed-control input[type="range"] {
    -webkit-appearance: none;
    appearance: none;
    height: 6px;
    background: linear-gradient(to right, var(--primary-green) 0%, var(--primary-green) 27%, #ddd 27%, #ddd 100%);
    border-radius: 3px;
    outline: none;
}

.speed-control input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    background: var(--primary-green);
    border-radius: 50%;
    cursor: pointer;
    border: 2px solid white;
    box-shadow: 0 2px 4px rgba(0,0,0,0.2);
    transition: all 0.3s;
}

.speed-control input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.2);
    box-shadow: 0 3px 8px rgba(46, 204, 113, 0.4);
}

.speed-control input[type="range"]::-moz-range-thumb {
    width: 18px;
    height: 18px;
    background: var(--primary-green);
    border-radius: 50%;
    cursor: pointer;
    border: 2px solid white;
    box-shadow: 0 2px 4px rgba(0,0,0,0.2);
    transition: all 0.3s;
}

.speed-control input[type="range"]::-moz-range-thumb:hover {
    transform: scale(1.2);
    box-shadow: 0 3px 8px rgba(46, 204, 113, 0.4);
}

.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 8px;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 500;
}

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

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

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

.btn-secondary:hover {
    background: var(--dark-green);
}

.btn-outline {
    background: var(--bg-white);
    color: var(--primary-green);
    border: 2px solid var(--primary-green);
}

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

.btn-success {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.btn-success:hover {
    background: linear-gradient(135deg, #764ba2 0%, #667eea 100%);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4);
}

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

.visualization-content {
    position: relative;
    height: 500px;
    max-height: 500px;
    background: var(--bg-light);
    border-radius: 8px;
    padding: 2rem;
    overflow-y: auto;
}

.visualization {
    display: none;
}

.visualization.active {
    display: block;
}

/* 树形可视化 */
.tree-viz-node {
    background: var(--bg-white);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    padding: 1rem 1.5rem;
    margin: 1rem 0;
    transition: all 0.3s;
}

.tree-viz-node.checking {
    border-color: var(--primary-green);
    background: var(--light-green);
    transform: scale(1.02);
    box-shadow: 0 0 0 4px rgba(46, 204, 113, 0.2);
}

.tree-viz-node.matched {
    border-color: var(--primary-green);
    background: var(--primary-green);
    color: white;
}

.tree-viz-node.failed {
    border-color: #e74c3c;
    background: #fadbd8;
}

.tree-viz-children {
    margin-left: 2rem;
    border-left: 3px solid var(--border-color);
    padding-left: 1rem;
}

/* 授权范围信息卡 */
.permission-info-card {
    padding: 1rem;
    border-radius: 8px;
    animation: fadeInUp 0.5s;
}

.permission-info-card h4 {
    margin: 0 0 0.5rem 0;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1rem;
}

.permission-info-card p {
    margin: 0.25rem 0;
    line-height: 1.6;
}

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

@keyframes permissionPulse {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.2);
    }
    100% {
        transform: scale(1.15);
    }
}

/* 权限项样式 */
.permission-item,
.array-permission-item {
    display: inline-block;
    cursor: default;
    white-space: nowrap;
}

.permission-item:hover,
.array-permission-item:hover {
    transform: scale(1.05);
}

/* 数组可视化 */
.array-viz-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1rem;
    max-height: 500px;
    overflow-y: auto;
}

.array-item {
    background: var(--bg-white);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    padding: 0.75rem 1rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    transition: all 0.3s;
}

.array-item-index {
    background: var(--primary-green);
    color: white;
    min-width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 0.9rem;
    flex-shrink: 0;
}

.array-item.checking {
    border-color: var(--primary-green);
    background: var(--light-green);
    transform: scale(1.05);
    box-shadow: 0 0 0 4px rgba(46, 204, 113, 0.2);
}

.array-item.matched {
    border-color: var(--primary-green);
    background: var(--primary-green);
    color: white;
    transform: scale(1.08);
    box-shadow: 0 0 20px rgba(46, 204, 113, 0.8), 0 0 40px rgba(46, 204, 113, 0.4);
    animation: permissionPulse 1s ease-in-out;
}

.array-item.matched .array-item-index {
    background: var(--dark-green);
}

.array-item.failed {
    opacity: 0.3;
}

/* 步骤面板 */
.steps-panel {
    background: var(--bg-light);
    border-radius: 12px;
    padding: 1.5rem;
    position: sticky;
    top: 90px;
    max-height: calc(100vh - 120px);
    overflow-y: auto;
}

.steps-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--border-color);
}

.steps-header h3 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--primary-green);
}

.step-counter {
    background: var(--primary-green);
    color: white;
    padding: 0.3rem 0.8rem;
    border-radius: 15px;
    font-size: 0.9rem;
}

.steps-content {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.step-placeholder {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--text-light);
}

.step-placeholder i {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

.step-item {
    background: var(--bg-white);
    border-left: 4px solid var(--border-color);
    border-radius: 8px;
    padding: 1rem;
    transition: all 0.3s;
}

.step-item.active {
    border-left-color: var(--primary-green);
    background: var(--light-green);
    transform: translateX(5px);
}

.step-item.completed {
    border-left-color: var(--dark-green);
    opacity: 0.7;
}

.step-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.step-number {
    background: var(--primary-green);
    color: white;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
}

.step-description {
    color: var(--text-light);
    font-size: 0.95rem;
}

/* 弹窗 */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 2000;
    align-items: center;
    justify-content: center;
}

.modal.show {
    display: flex;
}

.modal-content {
    background: var(--bg-white);
    border-radius: 12px;
    max-width: 500px;
    width: 90%;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
    animation: modalSlideIn 0.3s;
}

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

.modal-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.modal-header i {
    font-size: 1.5rem;
    color: #f39c12;
}

.modal-header h3 {
    margin: 0;
}

.modal-body {
    padding: 2rem 1.5rem;
    font-size: 1.05rem;
    line-height: 1.8;
}

.modal-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
}

/* 响应式设计 */
@media (max-width: 1200px) {
    .algorithm-content {
        grid-template-columns: 1fr;
    }
    
    .steps-panel {
        position: static;
        max-height: none;
    }
}

@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        height: auto;
        padding: 1rem;
        gap: 1rem;
    }
    
    .tabs {
        width: 100%;
        justify-content: space-around;
    }
    
    .tab-btn {
        padding: 0.5rem 1rem;
        font-size: 0.9rem;
    }
    
    .tab-btn span {
        display: none;
    }
    
    .monitor-grid {
        grid-template-columns: 1fr;
    }
    
    .control-buttons {
        flex-wrap: wrap;
    }
    
    .speed-control {
        width: 100%;
        flex-wrap: wrap;
    }
    
    .speed-control input[type="range"] {
        width: 100%;
        order: 3;
    }
    
    .btn {
        flex: 1;
        min-width: 120px;
    }
}

@media (max-width: 480px) {
    .main-content {
        padding: 0 1rem;
    }
    
    .algorithm-container,
    .device-container,
    .monitor-card {
        padding: 1rem;
    }
    
    .logo span {
        font-size: 1rem;
    }
}

/* 滚动条美化 */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

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

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

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

/* 性能对比样式 */
.performance-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.performance-card {
    background: var(--bg-light);
    border-radius: 8px;
    padding: 1rem;
    border: 2px solid var(--border-color);
    transition: all 0.3s;
}

.performance-card:hover {
    border-color: var(--primary-green);
    box-shadow: 0 4px 12px rgba(46, 204, 113, 0.15);
}

.performance-card h4 {
    margin: 0 0 0.75rem 0;
    color: var(--text-dark);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.95rem;
}

.performance-card .icon {
    font-size: 1.2rem;
}

.performance-card .icon.tree {
    color: #667eea;
}

.performance-card .icon.array {
    color: #f093fb;
}

.performance-metric {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--border-color);
}

.performance-metric:last-child {
    border-bottom: none;
}

.performance-metric .label {
    color: var(--text-light);
    font-size: 0.85rem;
}

.performance-metric .value {
    font-weight: 600;
    font-size: 1rem;
    color: var(--text-dark);
}

.performance-metric .value.highlight {
    color: var(--primary-green);
    font-size: 1.1rem;
}

.performance-comparison {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 1rem;
    border-radius: 8px;
}

.performance-comparison .result {
    font-size: 1.5rem;
    font-weight: bold;
    margin: 0.5rem 0;
}

.performance-comparison .description {
    font-size: 0.85rem;
    opacity: 0.95;
    line-height: 1.4;
}

.performance-test-info {
    background: #e8f5e9;
    padding: 0.75rem 1rem;
    border-radius: 8px;
    margin-bottom: 1rem;
    border-left: 4px solid var(--primary-green);
}

.performance-test-info p {
    margin: 0.25rem 0;
    font-size: 0.85rem;
    color: var(--text-dark);
}