/* Impedance Matching mini-tutorial lesson chrome */

.mt-lesson-body {
    max-width: 760px;
    margin: 0 auto;
    padding: 8px 20px 48px;
}

.mt-lesson-body--wide {
    max-width: 960px;
}

.mt-lesson-body .explanation-section {
    margin-bottom: 28px;
}

.mt-lesson-body h2 {
    color: var(--ai-blue-800);
    margin: 0 0 12px;
    font-size: 1.15rem;
}

.mt-lesson-body p,
.mt-lesson-body li {
    color: var(--ai-gray-700);
    line-height: 1.55;
}

.mt-lesson-body ul {
    padding-left: 1.25rem;
}

.mt-lesson-hero {
    text-align: center;
    padding: 20px 20px 8px;
    max-width: 720px;
    margin: 0 auto;
}

.mt-lesson-hero .mt-part-label {
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--ai-gray-600);
    margin: 0 0 8px;
}

.mt-lesson-hero h1 {
    margin: 0 0 10px;
    color: var(--ai-blue-800);
    font-size: 1.7rem;
}

.mt-lesson-hero p {
    margin: 0;
    color: var(--ai-gray-600);
    line-height: 1.5;
}

/* Interactive panel */
.im-demo {
    max-width: 960px;
    margin: 12px auto 28px;
    padding: 0 16px;
}

.im-panel {
    background: var(--ai-bg-card, #fff);
    border: 1px solid var(--ai-gray-200);
    border-radius: var(--ai-radius-lg);
    box-shadow: var(--ai-shadow-sm);
    padding: 16px 18px 18px;
}

.im-panel-head {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-start;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 12px;
}

.im-panel-head h2 {
    margin: 0 0 4px;
    font-size: 1.05rem;
    color: var(--ai-blue-800);
}

.im-panel-sub {
    margin: 0;
    font-size: 0.82rem;
    color: var(--ai-gray-500);
    line-height: 1.4;
}

.im-presets {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.im-preset-btn {
    padding: 5px 10px;
    font-size: 0.78rem;
    font-weight: 600;
    border: 2px solid #e2e8f0;
    border-radius: var(--ai-radius-md);
    background: #f8fafc;
    color: #334155;
    cursor: pointer;
}

.im-preset-btn:hover {
    background: #f1f5f9;
}

.im-preset-btn.active {
    background: #2563eb;
    border-color: transparent;
    color: #fff;
}

.im-controls {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 10px 14px;
    margin-bottom: 14px;
}

.im-controls label {
    display: flex;
    flex-direction: column;
    gap: 4px;
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--ai-gray-600);
}

.im-controls input[type="range"] {
    width: 100%;
    accent-color: var(--ai-blue-600, #2563eb);
}

.im-controls input[type="number"] {
    font-family: var(--ai-font-mono, ui-monospace, monospace);
    font-size: 0.85rem;
    padding: 5px 8px;
    border: 1px solid var(--ai-gray-200);
    border-radius: var(--ai-radius-sm);
}

.im-canvas-wrap {
    position: relative;
    width: 100%;
    max-width: 520px;
    margin: 0 auto 12px;
    background: #fafbfc;
    border: 1px solid var(--ai-gray-200);
    border-radius: var(--ai-radius-md);
    overflow: hidden;
}

.im-canvas-wrap canvas {
    display: block;
    width: 100%;
    height: auto;
    vertical-align: middle;
}

.im-readouts {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
    gap: 8px;
    margin-bottom: 12px;
}

.im-readout {
    padding: 8px 10px;
    background: var(--ai-gray-50, #f8fafc);
    border: 1px solid var(--ai-gray-200);
    border-radius: var(--ai-radius-sm);
}

.im-readout-label {
    display: block;
    font-size: 0.68rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--ai-gray-500);
    margin-bottom: 2px;
}

.im-readout-value {
    font-family: var(--ai-font-mono, ui-monospace, monospace);
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--ai-blue-800);
}

.im-eq {
    background: #f1f5f9;
    border: 1px solid var(--ai-gray-200);
    border-radius: var(--ai-radius-sm);
    padding: 10px 14px 8px;
    margin: 0 0 10px;
    color: #1e293b;
    overflow-x: auto;
    text-align: left;
}

/* One equation row: static pretty math + live plain-text result (no re-typeset on slider) */
.im-eq-row {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 6px 10px;
    margin: 6px 0;
    text-align: left;
}

.im-eq-math {
    text-align: left;
    flex: 0 1 auto;
    min-width: 0;
}

.im-eq-math mjx-container {
    margin: 0.15em 0 !important;
    text-align: left !important;
    display: inline-block !important;
}

/* Force MathJax display math left-aligned inside our panels */
.im-eq mjx-container[jax="CHTML"][display="true"],
.im-eq .MathJax_Display,
.math-block mjx-container[jax="CHTML"][display="true"],
.math-block .MathJax_Display {
    text-align: left !important;
    margin: 0.4em 0 !important;
}

.im-eq-eqsign {
    font-family: var(--ai-font-mono, ui-monospace, monospace);
    font-weight: 600;
    color: var(--ai-gray-500);
    flex-shrink: 0;
}

.im-eq-val {
    font-family: var(--ai-font-mono, ui-monospace, monospace);
    font-size: 0.95rem;
    font-weight: 700;
    color: #1d4ed8;
    flex: 1 1 auto;
    min-width: 4rem;
}

.im-eq-note {
    font-size: 0.78rem;
    color: var(--ai-gray-500);
    text-align: left;
    margin: -4px 0 8px;
}

.mt-lesson-body .math-block {
    margin: 12px 0;
    overflow-x: auto;
    text-align: left;
}

.im-aha {
    margin: 10px 0 0;
    padding: 10px 12px;
    background: #eff6ff;
    border-left: 3px solid #2563eb;
    border-radius: 0 var(--ai-radius-sm) var(--ai-radius-sm) 0;
    font-size: 0.88rem;
    color: var(--ai-gray-700);
    line-height: 1.45;
}

.im-hint {
    margin: 8px 0 0;
    font-size: 0.8rem;
    color: var(--ai-gray-500);
    line-height: 1.4;
}

.im-two-col {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
    align-items: start;
}

@media (max-width: 720px) {
    .im-two-col {
        grid-template-columns: 1fr;
    }
}