.section-title {
    margin-bottom: 4px;
}

.r-panel {
    display: flex;
    flex-direction: column;
    gap: 14px;
    margin: 20px 0 calc(30px + 2vw);
    border: 2px solid var(--navy);
    border-radius: 8px;
    padding: 20px;
    background-color: #fffefb;
}

.r-panel textarea {
    width: 100%;
    min-height: 380px;
    font: 13px/1.5 "Courier New", Courier, monospace;
    background-color: #101820;
    color: #f2f2f2;
    border: 2px solid var(--navy);
    border-radius: 6px;
    padding: 12px;
    resize: vertical;
    white-space: pre;
}

.r-controls {
    display: flex;
    align-items: center;
    gap: 14px;
    flex-wrap: wrap;
}

.r-run-btn {
    font: bold calc(12px + 0.3vw) "Courier New", Courier, monospace;
    background-color: var(--yellow);
    color: var(--ink);
    border: 2px solid var(--navy);
    border-radius: 6px;
    padding: 10px 22px;
    cursor: pointer;
}

.r-run-btn:hover {
    background-color: var(--yellow-deep);
}

.r-run-btn:disabled {
    opacity: 0.6;
    cursor: wait;
}

.r-status {
    font-size: calc(11px + 0.2vw);
    color: #555;
}

.r-output {
    width: 100%;
    border: 2px dashed var(--navy);
    border-radius: 6px;
    padding: 14px;
    min-height: 60px;
}

.r-output pre {
    white-space: pre-wrap;
    font: 13px "Courier New", Courier, monospace;
    margin: 0 0 10px;
}

.r-output pre.r-error {
    color: #b3261e;
}

.r-output canvas {
    max-width: 100%;
    display: block;
    margin: 10px 0;
    border: 1px solid #ccc;
}

.poster-embed {
    width: 100%;
    height: 85vh;
    border: 2px solid var(--navy);
    border-radius: 6px;
    margin-bottom: calc(20px + 2vw);
}

.legacy-embeds {
    margin-top: calc(30px + 3vw);
    padding-top: calc(20px + 2vw);
    border-top: 2px solid var(--yellow);
}