/* ========================================
   家用电器网站 - 图表通用样式
   ======================================== */

/* 图表容器基础样式 */
.diagram-container {
    background: var(--white);
    border-radius: 12px;
    padding: 1.5rem;
    margin: 1.5rem 0;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.diagram-title {
    text-align: center;
    color: var(--primary-color);
    font-size: 1.1rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

/* SVG 图表通用样式 */
.diagram-svg {
    width: 100%;
    height: auto;
    max-height: 400px;
}

/* 流程图样式 */
.flowchart-container {
    overflow-x: auto;
    padding: 1rem 0;
}

.flowchart-node {
    cursor: pointer;
    transition: all 0.3s ease;
}

.flowchart-node:hover {
    filter: brightness(0.95);
    transform: translateY(-2px);
}

.flowchart-box {
    fill: var(--white);
    stroke: var(--secondary-color);
    stroke-width: 2;
    rx: 8;
}

.flowchart-decision {
    fill: var(--white);
    stroke: var(--accent-color);
    stroke-width: 2;
}

.flowchart-start-end {
    fill: var(--secondary-color);
    stroke: none;
    rx: 20;
}

.flowchart-arrow {
    stroke: var(--primary-color);
    stroke-width: 2;
    fill: none;
    marker-end: url(#arrow-default);
}

.flowchart-label {
    font-size: 16px;
    fill: var(--text-color);
    text-anchor: middle;
    font-weight: 500;
}

/* 序列图样式 */
.sequence-lifeline {
    stroke: var(--secondary-color);
    stroke-width: 2;
    stroke-dasharray: 5, 5;
}

.sequence-actor {
    fill: var(--light-bg);
    stroke: var(--primary-color);
    stroke-width: 2;
    rx: 5;
}

.sequence-activation {
    fill: var(--secondary-color);
    stroke: var(--primary-color);
    stroke-width: 1;
}

.sequence-message {
    stroke: var(--primary-color);
    stroke-width: 2;
    fill: none;
    marker-end: url(#arrow-message);
}

.sequence-return {
    stroke: var(--primary-color);
    stroke-width: 2;
    fill: none;
    stroke-dasharray: 5, 5;
    marker-end: url(#arrow-return);
}

.sequence-label {
    font-size: 15px;
    fill: var(--text-color);
    text-anchor: middle;
}

.sequence-actor-label {
    font-size: 16px;
    fill: var(--primary-color);
    text-anchor: middle;
    font-weight: 600;
}

/* 交互图样式 */
.interactive-node {
    cursor: pointer;
    transition: all 0.3s ease;
}

.interactive-node:hover {
    filter: brightness(0.9);
}

.interactive-node.selected {
    stroke: var(--accent-color);
    stroke-width: 3;
}

.interactive-connection {
    stroke: var(--secondary-color);
    stroke-width: 2;
    fill: none;
    opacity: 0.6;
}

.interactive-connection.active {
    stroke: var(--accent-color);
    stroke-width: 3;
    opacity: 1;
}

.interactive-tooltip {
    fill: var(--white);
    stroke: var(--primary-color);
    stroke-width: 1;
    rx: 5;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.interactive-tooltip-text {
    font-size: 14px;
    fill: var(--text-color);
    opacity: 0;
    transition: opacity 0.3s ease;
}

/* 状态图样式 */
.state-node {
    fill: var(--white);
    stroke: var(--secondary-color);
    stroke-width: 2;
    rx: 20;
    cursor: pointer;
    transition: all 0.3s ease;
}

.state-node.active {
    fill: var(--secondary-color);
}

.state-node.active text {
    fill: var(--white);
}

.state-transition {
    stroke: var(--primary-color);
    stroke-width: 2;
    fill: none;
    marker-end: url(#arrow-state);
}

/* 动画效果 */
@keyframes flowPulse {
    0%, 100% { opacity: 0.6; }
    50% { opacity: 1; }
}

@keyframes signalFlow {
    0% { stroke-dashoffset: 20; }
    100% { stroke-dashoffset: 0; }
}

@keyframes nodeHighlight {
    0%, 100% { stroke: var(--secondary-color); }
    50% { stroke: var(--accent-color); }
}

.flowchart-animated {
    animation: flowPulse 2s infinite;
}

.signal-animated {
    animation: signalFlow 1s linear infinite;
}

.node-highlighted {
    animation: nodeHighlight 1.5s ease-in-out infinite;
}

/* 图例样式 */
.legend-container {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid #e0e0e0;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1rem;
    color: var(--text-color);
}

.legend-color {
    width: 20px;
    height: 20px;
    border-radius: 4px;
    border: 2px solid var(--primary-color);
}

/* 控制面板样式 */
.chart-controls {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.chart-btn {
    padding: 0.6rem 1.2rem;
    border: none;
    border-radius: 6px;
    background: var(--secondary-color);
    color: var(--white);
    cursor: pointer;
    font-size: 1rem;
    transition: all 0.3s ease;
}

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

.chart-btn.active {
    background: var(--accent-color);
}

.chart-btn:disabled {
    background: #ccc;
    cursor: not-allowed;
    transform: none;
}

/* 响应式适配 */
@media (max-width: 768px) {
    .diagram-container {
        padding: 1rem;
    }

    .flowchart-label,
    .sequence-label {
        font-size: 14px;
    }

    .chart-controls {
        justify-content: center;
    }
}

/* SVG 文字通用样式 */
.diagram-svg text {
    font-family: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
}

/* 暗色模式支持 */
@media (prefers-color-scheme: dark) {
    .flowchart-box,
    .flowchart-decision,
    .state-node,
    .interactive-tooltip {
        fill: var(--primary-color);
    }
    
    .flowchart-label,
    .sequence-label,
    .sequence-actor-label {
        fill: #e0e0e0;
    }
}