/* pole-zero-primer/styles.css */

.pz-page {
    padding-top: var(--ai-space-4);
    padding-bottom: var(--ai-space-8);
}

.pz-intro {
    max-width: 1600px;
    margin: 0 auto var(--ai-space-4);
}

.pz-lead {
    margin: 0;
    font-size: 1rem;
    line-height: 1.6;
    color: #334155;
}

.pz-main {
    max-width: 1600px;
    margin: 0 auto;
}

.pz-split {
    display: grid;
    grid-template-columns: minmax(300px, 1fr) minmax(380px, 1.35fr);
    gap: var(--ai-space-5);
    align-items: start;
}

.pz-controls h2 {
    margin: 0 0 var(--ai-space-3);
    font-size: 1.15rem;
    color: var(--ai-blue-800);
}

.pz-hint {
    margin: 0 0 var(--ai-space-4);
    font-size: 0.88rem;
    color: var(--ai-gray-600);
    line-height: 1.5;
}

.pz-gain-row {
    margin-bottom: var(--ai-space-4);
}

.pz-gain-row label {
    display: block;
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 4px;
    color: #374151;
}

.pz-gain-row input[type="number"] {
    width: 100%;
    max-width: 120px;
    padding: 6px 8px;
    border: 1px solid #d1d5db;
    border-radius: var(--ai-radius-sm);
    font-size: 0.95rem;
}

.pz-toggles {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: var(--ai-space-4);
}

.pz-toggle {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px 12px;
    padding: 10px 12px;
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    border-radius: var(--ai-radius-md);
    cursor: pointer;
}

.pz-toggle:has(input:checked) {
    border-color: #93c5fd;
    background: #eff6ff;
}

.pz-toggle input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: var(--ai-blue-600);
    flex-shrink: 0;
}

.pz-toggle-label {
    font-weight: 600;
    font-size: 0.9rem;
    color: #1e293b;
    flex: 1;
    min-width: 140px;
}

.pz-toggle-desc {
    width: 100%;
    font-size: 0.8rem;
    color: #64748b;
    line-height: 1.4;
    padding-left: 28px;
}

.pz-freq-input {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.85rem;
    color: #475569;
}

.pz-freq-input input {
    width: 72px;
    padding: 4px 6px;
    border: 1px solid #d1d5db;
    border-radius: var(--ai-radius-sm);
    font-size: 0.85rem;
}

.pz-freq-input input:disabled {
    opacity: 0.45;
    background: #f1f5f9;
}

.pz-metrics {
    font-size: 0.88rem;
    line-height: 1.5;
    color: #374151;
    padding: 12px;
    background: #fff;
    border: 1px solid #e2e8f0;
    border-radius: var(--ai-radius-md);
    margin-bottom: var(--ai-space-3);
}

.pz-metrics p {
    margin: 0 0 6px;
}

.pz-metrics p:last-child {
    margin-bottom: 0;
}

.pz-reset-btn {
    background: var(--ai-blue-600);
    color: #fff;
    border: none;
    border-radius: var(--ai-radius-sm);
    padding: 6px 14px;
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
}

.pz-reset-btn:hover {
    background: var(--ai-blue-700);
}

.pz-viz {
    display: flex;
    flex-direction: column;
    gap: var(--ai-space-3);
}

.pz-tf-card {
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    border-left: 3px solid #059669;
    border-radius: var(--ai-radius-md);
    padding: 12px 16px;
}

.pz-tf-card h3 {
    margin: 0 0 8px;
    font-size: 0.82rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: #475569;
}

.pz-tf-latex {
    overflow-x: auto;
    font-size: 2.05rem;
    line-height: 1.25;
}

.pz-tf-latex mjx-container[display="true"] {
    margin: 0.35em 0 !important;
}

.pz-chart-wrap {
    min-height: 420px;
    position: relative;
}

.pz-chart-wrap canvas {
    width: 100% !important;
    height: 420px !important;
}

.pz-coords {
    font-size: 0.8rem;
    color: #64748b;
    min-height: 1.2em;
}

.pz-insight {
    font-size: 0.92rem;
    line-height: 1.6;
    color: #334155;
}

.pz-insight p {
    margin: 0 0 10px;
}

.pz-insight p:last-child {
    margin-bottom: 0;
}

.pz-insight code {
    font-size: 0.88em;
    background: #f1f5f9;
    padding: 1px 5px;
    border-radius: 3px;
}

.pz-tutorial-lead {
    font-size: 1rem;
    line-height: 1.6;
    padding: 12px 14px;
    background: #eff6ff;
    border-left: 3px solid var(--ai-blue-600);
    border-radius: var(--ai-radius-sm);
    margin-bottom: 16px;
}

.explanation-section h3 {
    margin: 20px 0 8px;
    font-size: 1.05rem;
    color: #1e40af;
}

@media (max-width: 960px) {
    .pz-split {
        grid-template-columns: 1fr;
    }
}