/* ── Influencer Mix Modeling Lab ───────────────────────────── */

.imm-main {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 0 64px;
}

.imm-section {
  padding: 56px 56px 48px;
}
.imm-hero {
  padding: 100px 56px 48px;
}

.imm-title {
  margin: 12px 0 18px;
  font-size: clamp(40px, 5vw, 64px);
  line-height: 1.05;
  letter-spacing: -0.01em;
}

.imm-kicker {
  font-family: "Newsreader", serif;
  font-size: 16.5px;
  line-height: 1.55;
  color: var(--ink-soft);
  margin: 18px 0 22px;
  max-width: 70ch;
}

.imm-prose {
  font-family: "Newsreader", serif;
  font-size: 16.5px;
  line-height: 1.6;
  color: var(--ink);
  max-width: 72ch;
  margin: 8px 0 28px;
}

.imm-dateline {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  background: var(--ink-dim);
  border: 1px solid var(--ink-dim);
  margin: 22px 0 12px;
}
.imm-dateline > div {
  background: var(--paper);
  padding: 12px 14px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.imm-dateline .label {
  font-family: "DM Mono", ui-monospace, monospace;
  font-size: 9px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-dim);
}
.imm-dateline .value {
  font-family: "DM Mono", ui-monospace, monospace;
  font-size: 11px;
  color: var(--ink);
}
.imm-stamp {
  font-size: 10px;
  letter-spacing: 0.10em;
  text-transform: uppercase;
  color: var(--ink-dim);
  margin-top: 14px;
}

/* ── Chart wrappers ─────────────────────────────────────────── */
.imm-chart-wrap {
  margin: 18px 0 22px;
}
.imm-chart-title {
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-dim);
  margin: 0 0 10px;
}
.imm-chart-wrap svg,
.imm-sat-tile svg,
.imm-whatif-tile svg {
  width: 100%;
  height: auto;
  display: block;
}
.imm-chart-wrap svg {
  background: var(--paper);
  border: 1px solid var(--ink-dim);
}

/* ── Two-column layout for data section ─────────────────────── */
.imm-twocol {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
  margin-top: 18px;
}

/* ── Tables ─────────────────────────────────────────────────── */
.imm-table-wrap {
  margin: 14px 0 18px;
  border: 1px solid var(--ink-dim);
  background: var(--paper);
}
.imm-table {
  width: 100%;
  border-collapse: collapse;
  font-family: "DM Mono", ui-monospace, monospace;
  font-size: 11px;
}
.imm-table th,
.imm-table td {
  padding: 8px 12px;
  text-align: right;
  border-bottom: 1px solid var(--ink-dim);
}
.imm-table th {
  font-size: 9px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-dim);
  font-weight: 400;
  text-align: right;
  background: var(--paper-2);
}
.imm-table th:first-child,
.imm-table td:first-child {
  text-align: left;
}
.imm-table tr:last-child td { border-bottom: 0; }
.imm-table .ci {
  color: var(--ink-soft);
  font-size: 10px;
}
.imm-table tbody tr:hover {
  background: color-mix(in oklab, var(--accent) 6%, transparent);
}

/* ── SQL code block ─────────────────────────────────────────── */
.imm-sql-block {
  background: var(--paper-2);
  border: 1px solid var(--ink-dim);
  margin-top: 10px;
}
.imm-sql-block summary {
  padding: 10px 14px;
  cursor: pointer;
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-soft);
  border-bottom: 1px solid var(--ink-dim);
  list-style: none;
}
.imm-sql-block summary::-webkit-details-marker { display: none; }
.imm-sql-block summary code {
  color: var(--accent);
  font-family: "DM Mono", ui-monospace, monospace;
  text-transform: none;
  letter-spacing: 0;
}
.imm-sql-block[open] summary {
  color: var(--ink);
}
.imm-sql {
  margin: 0;
  padding: 14px 18px;
  font-family: "DM Mono", ui-monospace, monospace;
  font-size: 11.5px;
  line-height: 1.55;
  color: var(--ink);
  overflow-x: auto;
  background: var(--paper);
}
.imm-sql .sql-k { color: var(--accent); }
.imm-sql .sql-s { color: #b08a3d; }
[data-theme="graphite"] .imm-sql .sql-s { color: #d4b970; }
.imm-sql .sql-c { color: var(--ink-dim); font-style: italic; }

/* ── Equation block ─────────────────────────────────────────── */
.imm-eq-wrap {
  border: 1px solid var(--ink-dim);
  background: var(--paper-2);
  padding: 22px 28px;
  margin: 18px 0;
}
.imm-eq-label {
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-dim);
  margin-bottom: 14px;
}
.imm-eq {
  font-family: "Newsreader", serif;
  font-size: 17px;
  line-height: 1.9;
  color: var(--ink);
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.imm-eq-line {
  font-style: italic;
}
.imm-eq .imm-fn {
  font-style: normal;
  color: var(--accent);
}
.imm-eq-legend {
  font-size: 10.5px;
  color: var(--ink-soft);
  margin-top: 14px;
  letter-spacing: 0.04em;
}

/* ── Callout ────────────────────────────────────────────────── */
.imm-callout {
  border-left: 2px solid var(--accent);
  background: var(--paper-2);
  padding: 16px 22px;
  margin: 16px 0 22px;
  max-width: 760px;
}
.imm-callout-label {
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 6px;
}
.imm-callout p {
  font-family: "Newsreader", serif;
  font-size: 15px;
  line-height: 1.55;
  color: var(--ink);
  margin: 0;
}
.imm-callout a {
  border-bottom: 1px solid var(--ink-dim);
}

/* ── Diagnostics ────────────────────────────────────────────── */
.imm-diag-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  background: var(--ink-dim);
  border: 1px solid var(--ink-dim);
  margin: 14px 0 22px;
}
.imm-diag-tile {
  background: var(--paper);
  padding: 16px 18px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.imm-diag-label {
  font-family: "DM Mono", ui-monospace, monospace;
  font-size: 9px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-dim);
}
.imm-diag-value {
  font-family: "DM Mono", ui-monospace, monospace;
  font-size: 22px;
  font-weight: 500;
  color: var(--ink);
  line-height: 1.1;
}
.imm-diag-sub {
  font-family: "DM Mono", ui-monospace, monospace;
  font-size: 10px;
  color: var(--ink-soft);
}

/* ── Saturation curve grid ──────────────────────────────────── */
.imm-sat-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  margin-top: 18px;
}
.imm-sat-tile {
  border: 1px solid var(--ink-dim);
  background: var(--paper);
  padding: 12px 14px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.imm-sat-name {
  font-family: "DM Mono", ui-monospace, monospace;
  font-size: 10.5px;
  color: var(--ink);
  letter-spacing: 0.04em;
}
.imm-sat-meta {
  font-family: "DM Mono", ui-monospace, monospace;
  font-size: 9.5px;
  color: var(--ink-dim);
  display: flex;
  justify-content: space-between;
}
.imm-sat-status {
  font-family: "DM Mono", ui-monospace, monospace;
  font-size: 9px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}
.imm-sat-status.linear     { color: var(--accent); }
.imm-sat-status.bending    { color: #d4b970; }
.imm-sat-status.saturated  { color: var(--ink-dim); }

/* ── What-if controls + grid ───────────────────────────────── */
.imm-whatif-controls {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  padding: 14px 18px;
  border: 1px solid var(--ink-dim);
  background: var(--paper-2);
  margin: 18px 0 14px;
}
.imm-filter-label {
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-dim);
  margin-right: 6px;
}
.imm-filter-divider {
  width: 1px;
  height: 18px;
  background: var(--ink-dim);
  margin: 0 4px;
}
.imm-pill {
  font-family: "DM Mono", ui-monospace, monospace;
  font-size: 10.5px;
  letter-spacing: 0.04em;
  padding: 6px 12px;
  border: 1px solid var(--ink-dim);
  background: var(--paper);
  color: var(--ink-soft);
  cursor: pointer;
  transition: all 0.15s;
}
.imm-pill:hover { color: var(--ink); border-color: var(--ink); }
.imm-pill.active {
  background: var(--accent);
  color: var(--paper);
  border-color: var(--accent);
}
.imm-pill-action {
  border-color: var(--accent);
  color: var(--accent);
}
.imm-pill-action:hover {
  background: var(--accent);
  color: var(--paper);
}

/* ── Cloud Run API status badge ─────────────────────────────── */
.imm-api-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  font-size: 9.5px;
  letter-spacing: 0.10em;
  text-transform: uppercase;
  color: var(--ink-soft);
  border: 1px solid var(--ink-dim);
  background: var(--paper);
}
.imm-api-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--ink-dim);
  display: inline-block;
}
.imm-api-badge.live .imm-api-dot {
  background: var(--accent);
  box-shadow: 0 0 0 2px color-mix(in oklab, var(--accent) 25%, transparent);
}
.imm-api-badge.local .imm-api-dot { background: var(--ink-dim); }
.imm-api-badge.error .imm-api-dot { background: #c66e6e; }

.imm-whatif-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--ink-dim);
  border: 1px solid var(--ink-dim);
}
.imm-whatif-tile {
  background: var(--paper);
  padding: 14px 16px;
  display: grid;
  grid-template-columns: 130px 1fr 90px;
  gap: 14px;
  align-items: center;
}
.imm-whatif-name {
  font-family: "DM Mono", ui-monospace, monospace;
  font-size: 10.5px;
  color: var(--ink);
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.imm-whatif-name .sub {
  font-size: 9px;
  color: var(--ink-dim);
  letter-spacing: 0.06em;
}
.imm-whatif-slider {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 4px;
  background: var(--ink-dim);
  border-radius: 0;
  outline: none;
}
.imm-whatif-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--accent);
  border: 2px solid var(--paper);
  cursor: pointer;
}
.imm-whatif-slider::-moz-range-thumb {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--accent);
  border: 2px solid var(--paper);
  cursor: pointer;
}
.imm-whatif-value {
  font-family: "DM Mono", ui-monospace, monospace;
  font-size: 11.5px;
  color: var(--ink);
  text-align: right;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.imm-whatif-delta {
  font-size: 9.5px;
  color: var(--ink-dim);
}
.imm-whatif-delta.up   { color: var(--accent); }
.imm-whatif-delta.down { color: #c66e6e; }

.imm-whatif-result {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--ink-dim);
  border: 1px solid var(--ink-dim);
  margin-top: 18px;
}
.imm-whatif-headline {
  background: var(--paper);
  padding: 22px 28px;
}
.imm-result-label {
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-dim);
  margin-bottom: 8px;
}
.imm-result-value {
  display: flex;
  align-items: baseline;
  gap: 14px;
  flex-wrap: wrap;
}
#imm-result-mean,
#imm-result-new-rev {
  font-family: "DM Mono", ui-monospace, monospace;
  font-size: 30px;
  font-weight: 500;
  color: var(--ink);
}
#imm-result-mean.up { color: var(--accent); }
#imm-result-mean.down { color: #c66e6e; }
.imm-result-ci {
  font-size: 11px;
  color: var(--ink-dim);
}

/* ── Receipts ───────────────────────────────────────────────── */
.imm-receipts {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 1px;
  background: var(--ink-dim);
  border: 1px solid var(--ink-dim);
  margin: 14px 0 22px;
}
.imm-receipt {
  background: var(--paper);
  padding: 18px 18px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.imm-receipt-label {
  font-family: "DM Mono", ui-monospace, monospace;
  font-size: 9px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-dim);
}
.imm-receipt-value {
  font-family: "DM Mono", ui-monospace, monospace;
  font-size: 19px;
  font-weight: 500;
  color: var(--ink);
}
.imm-receipt-sub {
  font-family: "DM Mono", ui-monospace, monospace;
  font-size: 10px;
  color: var(--ink-soft);
}

/* ── Methodology grid ───────────────────────────────────────── */
.imm-method-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px 36px;
  margin-top: 14px;
}
.imm-method-grid .method-head,
.imm-method-head {
  font-family: "DM Mono", ui-monospace, monospace;
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-dim);
  margin-bottom: 8px;
}
.imm-method-grid p {
  font-family: "Newsreader", serif;
  font-size: 15px;
  line-height: 1.55;
  color: var(--ink-soft);
}
.imm-method-grid code {
  font-family: "DM Mono", ui-monospace, monospace;
  font-size: 12.5px;
  color: var(--accent);
}

.imm-caveats {
  margin-top: 28px;
  border-top: 1px solid var(--ink-dim);
  padding-top: 22px;
}
.imm-caveat-label {
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 12px;
}
.imm-caveats ul {
  margin: 0;
  padding-left: 22px;
  list-style: square;
}
.imm-caveats li {
  font-family: "Newsreader", serif;
  font-size: 14.5px;
  line-height: 1.55;
  color: var(--ink-soft);
  margin-bottom: 8px;
}
.imm-caveats em { font-style: italic; }

.imm-readinglist {
  margin-top: 22px;
}
.imm-readinglist ul {
  list-style: none;
  margin: 0;
  padding: 0;
}
.imm-readinglist li {
  font-size: 11px;
  margin-bottom: 4px;
}
.imm-readinglist a {
  border-bottom: 1px solid var(--ink-dim);
  color: var(--ink-soft);
}
.imm-readinglist a:hover { color: var(--accent); border-color: var(--accent); }

/* ── Responsive ─────────────────────────────────────────────── */
@media (max-width: 1100px) {
  .imm-section { padding: 48px 36px; }
  .imm-hero { padding: 88px 36px 40px; }
  .imm-twocol { grid-template-columns: 1fr; }
  .imm-sat-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .imm-receipts { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .imm-diag-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .imm-whatif-grid { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
  .imm-section { padding: 36px 20px; }
  .imm-hero { padding: 72px 20px 32px; }
  .imm-dateline { grid-template-columns: 1fr 1fr; }
  .imm-method-grid { grid-template-columns: 1fr; }
  .imm-sat-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .imm-receipts { grid-template-columns: 1fr 1fr; }
  .imm-diag-grid { grid-template-columns: 1fr 1fr; }
  .imm-whatif-tile { grid-template-columns: 1fr; gap: 8px; }
  .imm-whatif-result { grid-template-columns: 1fr; }
  .imm-whatif-controls { gap: 6px; }
  .imm-whatif-controls .imm-pill { font-size: 9.5px; padding: 5px 9px; }
  #imm-result-mean, #imm-result-new-rev { font-size: 24px; }
}