/* ===== Body panel - electrode diagram ===== */
.body-panel {
    background: linear-gradient(145deg, #121828, #1a2238);
    padding: 0;
    display: flex;
    flex-direction: column;
    height: 100%;
    overflow: hidden;
}

.body-panel h2 {
    text-align: center;
    color: #7eb8ff;
    font-size: 1.1rem;
    padding: 10px 0 6px;
    margin: 0;
    flex-shrink: 0;
}

#body-container {
    flex: 1;
    min-height: 0;
    overflow: hidden;
}

#body-svg {
    width: 100%;
    height: 100%;
}

/* Body panel legend */
.body-legend {
    flex-shrink: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 6px 16px;
    padding: 8px 16px;
    border-top: 1px solid #2a3a5a;
    background: linear-gradient(145deg, #0e1420, #151d30);
}

.body-legend-item {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.8rem;
    color: #8899bb;
}

.body-legend-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    flex-shrink: 0;
}

/* Info panel - always visible on the right */
.info-panel {
    background: linear-gradient(145deg, #0e1420, #151d30);
    border-left: 1px solid #2a3a5a;
    padding: 0;
    width: 320px;
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.info-panel h2 {
    color: #7eb8ff;
    font-size: 1.1rem;
    margin: 0;
    padding: 16px 20px 12px;
    border-bottom: 1px solid #2a3a5a;
    background: linear-gradient(145deg, #141c2e, #1a2438);
    flex-shrink: 0;
}

.info-panel .info-content {
    line-height: 1.7;
    font-size: 0.92rem;
    color: #c0ccdd;
    padding: 16px 20px;
    overflow-y: auto;
    flex: 1;
}

.info-panel .info-content h3 {
    color: #ff9f6b;
    margin: 14px 0 6px;
    font-size: 1rem;
    border-bottom: 1px solid rgba(255, 159, 107, 0.15);
    padding-bottom: 4px;
}

.info-panel .info-content h3:first-child {
    margin-top: 0;
}

.info-panel .info-content .highlight {
    color: #7ee8a0;
    font-weight: 600;
}

.info-panel .info-content .lead-tag {
    display: inline-block;
    background: #2a3a5a;
    color: #7eb8ff;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 0.82rem;
    margin: 2px;
}

.welcome-text {
    text-align: center;
    padding: 40px 20px;
    color: #6a7a9a;
    font-style: italic;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 8px;
    margin: 4px 0;
    font-size: 0.85rem;
}

.legend-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    flex-shrink: 0;
}

/* Info panel scrollbar */
.info-panel .info-content::-webkit-scrollbar { width: 6px; }
.info-panel .info-content::-webkit-scrollbar-track { background: transparent; }
.info-panel .info-content::-webkit-scrollbar-thumb { background: #2a3a5a; border-radius: 3px; }
.info-panel .info-content::-webkit-scrollbar-thumb:hover { background: #3a5a7a; }