/* Jacobian & Velocity Kinematics Sim — local styles, no global collision */
/* simulation background = black; max width 800px; font Courier New */

#content_sim .jmb-lab {
    font-family: 'Courier New', monospace;
    max-width: 800px;
    margin: 0 auto;
    background: #000;
    color: #e0e0e0;
    padding: 12px;
    box-sizing: border-box;
    overflow: visible;
    position: relative;
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.12);
}

#content_sim .jmb-lab * {
    box-sizing: border-box;
}

#content_sim .jmb-canvas-wrap {
    position: relative;
    width: 100%;
    max-width: 800px;
    height: 480px;
    margin: 0 auto;
    background: #000;
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    overflow: hidden;
}

#content_sim .jmb-canvas-wrap #jmb-canvas {
    display: block;
    width: 100%;
    height: 100%;
    background: #000;
}

#content_sim .jmb-canvas-wrap #jmb-circle-canvas.jmb-circle-overlay {
    position: absolute;
    top: 8px;
    right: 8px;
    width: 140px;
    height: 140px;
    display: block;
    background: rgba(0,0,0,0.85);
    border: 1px solid rgba(255,255,255,0.35);
    border-radius: 6px;
    pointer-events: none;
}

#content_sim .jmb-controls {
    max-width: 800px;
    margin: 12px auto 0;
    padding: 12px;
    background: #111;
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    font-family: 'Courier New', monospace;
}

#content_sim .jmb-controls h3 {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: #8b9bb4;
    margin: 0 0 8px 0;
    font-weight: normal;
}

#content_sim .jmb-row {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 8px;
}

#content_sim .jmb-row label {
    min-width: 72px;
    font-size: 12px;
    color: #c0c0c0;
}

#content_sim .jmb-hidden {
    display: none;
}

#content_sim .jmb-position-hint {
    margin: 6px 0 10px 0;
    padding: 8px 10px;
    background: rgba(46, 204, 113, 0.08);
    border: 1px solid rgba(46, 204, 113, 0.25);
    border-radius: 4px;
}

#content_sim .jmb-position-hint .jmb-hint-text {
    margin: 0;
    font-size: 11px;
    color: #b0c0d0;
    line-height: 1.35;
}

#content_sim .jmb-mode-row .jmb-mode-options {
    display: inline-flex;
    align-items: center;
    gap: 12px;
}

#content_sim .jmb-mode-label {
    font-size: 12px;
    color: #c0c0c0;
    cursor: pointer;
    margin-left: 2px;
}

#content_sim .jmb-mode-options input[type="radio"] {
    accent-color: #2ecc71;
    cursor: pointer;
}

#content_sim .jmb-btn {
    font-family: 'Courier New', monospace;
    font-size: 11px;
    padding: 4px 10px;
    background: #2a2a2a;
    color: #c0c0c0;
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: 4px;
    cursor: pointer;
}

#content_sim .jmb-btn:hover {
    background: #333;
    color: #e0e0e0;
}

#content_sim .jmb-btn.jmb-btn-stop {
    background: rgba(255, 77, 77, 0.2);
    color: #ff6b6b;
    border-color: rgba(255, 77, 77, 0.5);
}

#content_sim .jmb-row input[type="range"] {
    flex: 1;
    min-width: 80px;
    max-width: 180px;
    height: 6px;
    accent-color: #2ecc71;
}

#content_sim .jmb-row .jmb-val {
    min-width: 48px;
    font-size: 12px;
    color: #2ecc71;
}

#content_sim .jmb-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-top: 12px;
}

#content_sim .jmb-matrix-box {
    font-family: 'Courier New', monospace;
    background: #0a0a0a;
    padding: 10px 12px;
    border-radius: 6px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 12px;
}

#content_sim .jmb-matrix-box h4 {
    margin: 0 0 6px 0;
    font-size: 11px;
    color: #8b9bb4;
    font-weight: normal;
}

#content_sim .jmb-matrix-box pre,
#content_sim .jmb-matrix-box .jmb-matrix-wrap {
    margin: 0;
    font-size: 11px;
    color: #2ecc71;
    line-height: 1.5;
}

/* GUI matrix: 2×2 J and 2×1 v — formula + aligned matrix/vector blocks */
#content_sim .jmb-formula {
    font-size: 11px;
    color: #a8d8a8;
    margin-bottom: 6px;
}

#content_sim .jmb-matrix-row {
    display: flex;
    align-items: center;
    flex-wrap: nowrap;
    gap: 8px;
    margin-top: 4px;
}

/* Align numeric matrix with symbolic: both row labels same width so matrices line up */
#content_sim #jmb-matrix .jmb-matrix-row .jmb-matrix-label {
    min-width: 2.6em;
}

#content_sim .jmb-bracket-wrap {
    display: inline-flex;
    align-items: center;
    border-left: 2px solid rgba(46, 204, 113, 0.7);
    border-right: 2px solid rgba(46, 204, 113, 0.7);
    padding: 2px 6px;
    border-radius: 2px;
}

#content_sim .jmb-matrix-table {
    border-collapse: collapse;
    margin: 0;
    vertical-align: middle;
}

#content_sim .jmb-matrix-table td {
    border: 1px solid rgba(46, 204, 113, 0.5);
    padding: 4px 10px;
    text-align: right;
    min-width: 52px;
    font-family: 'Courier New', monospace;
    font-size: 12px;
    color: #2ecc71;
}

#content_sim .jmb-matrix-table.jmb-vec-table td {
    min-width: 48px;
}

#content_sim .jmb-matrix-table.jmb-symbolic-matrix td {
    min-width: 56px;
    font-size: 11px;
    text-align: center;
    white-space: nowrap;
}

#content_sim .jmb-matrix-label {
    font-family: 'Courier New', monospace;
    font-size: 12px;
    color: #a8d8a8;
    flex-shrink: 0;
}

#content_sim .jmb-status {
    font-size: 12px;
    color: #c0c0c0;
    font-family: 'Courier New', monospace;
}

#content_sim .jmb-status .jmb-det {
    color: #3498db;
}

#content_sim .jmb-singular-wrap {
    margin: 6px 0 4px 0;
}

#content_sim .jmb-status .jmb-matrix-row.jmb-velocity-eq {
    margin-top: 8px;
    flex-wrap: wrap;
}

#content_sim .jmb-op {
    padding: 0 2px;
    flex-shrink: 0;
    color: #a8d8a8;
}

#content_sim .jmb-status .jmb-vec-block {
    margin-top: 8px;
    display: flex;
    align-items: center;
    flex-wrap: nowrap;
    gap: 8px;
}

#content_sim .jmb-vec-hint {
    font-size: 10px;
    color: #888;
    flex-shrink: 0;
}

#content_sim .jmb-singular {
    color: #ff4d4d;
    font-weight: bold;
    animation: jmb-blink 1s infinite;
}

@keyframes jmb-blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}