/* ================================================================
   IntrinsicIQ — Methodology
   A research-document expression of the valuation workspace:
   instrument-like formulae, visible assumptions, and quiet hierarchy.
   Depends on tokens.css, base.css, and public-shell.css.
   Print presentation remains intentionally owned by methodology.html.
   ================================================================ */

.methodology-page {
  background:
    var(--ambient-gold),
    radial-gradient(900px 540px at 88% 6%, rgba(255,255,255,.022), transparent 64%),
    var(--bg);
}

.page-content {
  padding: 0 0 112px;
}

.page-wrap {
  width: min(100% - 48px, var(--max-w));
  margin-inline: auto;
}

.print-only {
  display: none;
}

/* Masthead ------------------------------------------------------- */

.methodology-masthead {
  position: relative;
  isolation: isolate;
  min-height: 500px;
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(300px, .68fr);
  align-items: center;
  gap: clamp(48px, 8vw, 96px);
  padding: 82px 0 74px;
  border-bottom: 1px solid var(--border);
}

.methodology-masthead::before {
  content: "";
  position: absolute;
  z-index: -1;
  inset: 0 calc(50% - 50vw);
  pointer-events: none;
  background-image:
    linear-gradient(var(--border-zinc) 1px, transparent 1px),
    linear-gradient(90deg, var(--border-zinc) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: linear-gradient(to bottom, rgba(0,0,0,.55), transparent 92%);
  opacity: .24;
}

.methodology-masthead-copy,
.methodology-scope {
  position: relative;
}

.page-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 20px;
  color: var(--gold-dim);
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: .16em;
  line-height: 1.4;
  text-transform: uppercase;
}

.page-eyebrow::before {
  content: "";
  width: 24px;
  height: 1px;
  background: var(--gilt);
}

.page-h1 {
  max-width: 710px;
  color: var(--text);
  font-family: var(--display);
  font-size: clamp(42px, 6vw, 70px);
  font-weight: 600;
  letter-spacing: -.025em;
  line-height: .97;
  text-wrap: balance;
}

.page-h1 span {
  background: var(--gilt);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.page-lead {
  max-width: 650px;
  margin-top: 26px;
  color: var(--text-muted);
  font-size: clamp(14px, 1.6vw, 16px);
  line-height: 1.75;
}

.methodology-scope {
  overflow: hidden;
  border: 1px solid var(--border-light);
  border-radius: var(--r-panel);
  background: var(--surface-glass);
  box-shadow: var(--shadow-panel);
  backdrop-filter: blur(16px);
}

.methodology-scope::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  left: 0;
  height: 1px;
  background: var(--gilt);
}

.scope-kicker {
  padding: 17px 19px 13px;
  border-bottom: 1px solid var(--border-zinc);
  color: var(--gold-dim);
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: .14em;
  text-transform: uppercase;
}

.methodology-scope h2 {
  padding: 21px 19px 20px;
  border-bottom: 1px solid var(--border-zinc);
  color: var(--text);
  font-family: var(--display);
  font-size: 25px;
  font-weight: 600;
  letter-spacing: -.01em;
  line-height: 1.08;
}

.methodology-scope dl > div {
  display: grid;
  grid-template-columns: 112px minmax(0, 1fr);
  gap: 12px;
  padding: 13px 19px;
  border-bottom: 1px solid var(--border-zinc);
}

.methodology-scope dl > div:last-child {
  border-bottom: 0;
}

.methodology-scope dt {
  color: var(--text-dim);
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: .06em;
  line-height: 1.55;
  text-transform: uppercase;
}

.methodology-scope dd {
  color: var(--text-muted);
  font-size: 11px;
  line-height: 1.55;
}

/* PDF control ---------------------------------------------------- */

.pdf-export-bar {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-top: 30px;
}

.pdf-btn {
  min-height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 15px;
  border: 1px solid var(--border-light);
  border-radius: var(--r-ctl);
  background: var(--gold-bg);
  color: var(--gold);
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: .08em;
  line-height: 1;
  text-transform: uppercase;
  cursor: pointer;
  transition: background-color var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
}

.pdf-btn:hover {
  border-color: var(--gold-dim);
  background: var(--gold-glow);
}

.pdf-btn:active {
  transform: translateY(1px);
}

.pdf-btn svg {
  width: 14px;
  height: 14px;
  flex: 0 0 auto;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.7;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.pdf-hint {
  color: var(--text-dim);
  font-size: 10px;
  line-height: 1.5;
}

.pdf-hint strong {
  color: var(--text-muted);
  font-weight: 600;
}

/* Section index -------------------------------------------------- */

.methodology-index {
  position: sticky;
  z-index: 60;
  top: var(--chrome-h);
  display: flex;
  align-items: stretch;
  gap: 2px;
  margin: 0 calc(50% - 50vw) 0;
  padding: 8px max(24px, calc((100vw - var(--max-w)) / 2));
  overflow-x: auto;
  border-bottom: 1px solid var(--border-zinc);
  background: var(--chrome-bg);
  backdrop-filter: blur(14px);
  scrollbar-width: thin;
  scrollbar-color: var(--border-light) transparent;
}

.methodology-index a {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  min-height: 34px;
  padding: 7px 10px;
  border: 1px solid transparent;
  border-radius: var(--r-ctl);
  color: var(--text-muted);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: .025em;
  line-height: 1;
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--transition-fast), background-color var(--transition-fast), border-color var(--transition-fast);
}

.methodology-index a span {
  color: var(--gold-dim);
  font-family: var(--mono);
  font-size: 8px;
  letter-spacing: .06em;
}

.methodology-index a:hover {
  border-color: var(--border);
  background: var(--surface);
  color: var(--text);
}

/* Document ------------------------------------------------------- */

.methodology-document {
  width: min(100%, 880px);
  margin-inline: auto;
  counter-reset: methodology-section;
}

.page-section {
  counter-increment: methodology-section;
  position: relative;
  padding: 64px 0;
  border-bottom: 1px solid var(--border-zinc);
  scroll-margin-top: calc(var(--chrome-h) + 68px);
}

.page-section:last-child {
  border-bottom: 0;
  padding-bottom: 16px;
}

.page-h2 {
  display: flex;
  align-items: baseline;
  gap: 13px;
  margin-bottom: 24px;
  color: var(--text);
  font-family: var(--display);
  font-size: clamp(26px, 4vw, 34px);
  font-weight: 600;
  letter-spacing: -.012em;
  line-height: 1.08;
  text-wrap: balance;
}

.page-h2::before {
  content: counter(methodology-section, decimal-leading-zero) " /";
  flex: 0 0 auto;
  color: var(--gold-dim);
  font-family: var(--mono);
  font-size: 9px;
  font-weight: 500;
  letter-spacing: .08em;
  line-height: 1;
}

.page-p {
  margin-bottom: 15px;
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.82;
}

.page-p strong,
.method-desc strong {
  color: var(--text);
  font-weight: 600;
}

.page-p em {
  color: var(--text);
}

.page-note {
  margin-top: 15px;
  color: var(--text-dim);
  font-size: 11px;
  line-height: 1.7;
}

.page-note strong {
  color: var(--text-muted);
}

.inline-code {
  padding: 2px 5px;
  border: 1px solid var(--border-zinc);
  border-radius: var(--r-ctl);
  background: var(--surface-alt);
  color: var(--gold);
  font-family: var(--mono);
  font-size: 10px;
}

/* Numbered method steps ----------------------------------------- */

.method-block {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 20px;
  align-items: start;
  margin-top: 25px;
  padding-top: 25px;
  border-top: 1px solid var(--border-zinc);
}

.method-block + .method-block {
  margin-top: 34px;
}

.method-num {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border: 1px solid var(--border-light);
  border-radius: var(--r-panel);
  background: var(--gold-bg);
  color: var(--gold);
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

.method-body {
  min-width: 0;
}

.method-title {
  margin: 5px 0 9px;
  color: var(--text);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: .005em;
  line-height: 1.4;
}

.method-desc {
  color: var(--text-muted);
  font-size: 13px;
  line-height: 1.78;
}

/* Formula instruments ------------------------------------------- */

.formula-block {
  position: relative;
  margin: 20px 0;
  padding: 18px 20px;
  overflow-x: auto;
  border: 1px solid var(--border-zinc);
  border-left-color: var(--gold-dim);
  border-radius: var(--r-panel);
  background: var(--surface);
  box-shadow: inset 2px 0 0 var(--gold-dim);
  color: var(--text);
  font-family: var(--mono);
  font-size: 12px;
  font-variant-numeric: tabular-nums;
  line-height: 1.9;
  overflow-wrap: anywhere;
}

.formula-label {
  display: flex;
  align-items: center;
  gap: 9px;
  margin-bottom: 11px;
  color: var(--text-dim);
  font-size: 8px;
  font-weight: 500;
  letter-spacing: .15em;
  line-height: 1.4;
  text-transform: uppercase;
}

.formula-label::after {
  content: "";
  height: 1px;
  flex: 1;
  background: var(--border-zinc);
}

.formula-var {
  color: var(--gold);
}

.formula-block strong {
  color: var(--text);
  font-weight: 500;
}

.formula-note {
  margin: 12px -20px -18px;
  padding: 12px 20px 14px;
  border-top: 1px solid var(--border-zinc);
  background: var(--surface-alt);
  color: var(--text-dim);
  font-family: var(--sans);
  font-size: 11px;
  line-height: 1.7;
}

/* Lists and callouts -------------------------------------------- */

.page-list {
  list-style: none;
  margin: 22px 0 20px;
  padding: 0;
  border-top: 1px solid var(--border-zinc);
}

.page-list li {
  position: relative;
  padding: 14px 10px 14px 28px;
  border-bottom: 1px solid var(--border-zinc);
  color: var(--text-muted);
  font-size: 13px;
  line-height: 1.7;
}

.page-list li::before {
  content: "";
  position: absolute;
  top: 23px;
  left: 8px;
  width: 6px;
  height: 1px;
  background: var(--gold-dim);
}

.page-list li strong {
  color: var(--text);
  font-weight: 600;
}

.page-callout {
  position: relative;
  margin: 26px 0 30px;
  padding: 18px 20px;
  border: 1px solid var(--border);
  border-left-color: var(--gold-dim);
  border-radius: var(--r-panel);
  background: var(--gold-bg);
  box-shadow: inset 2px 0 0 var(--gold-dim);
}

.page-callout p {
  margin: 0;
  color: var(--text-muted);
  font-size: 13px;
  line-height: 1.72;
}

.page-callout p + p {
  margin-top: 10px;
}

.page-callout strong {
  color: var(--gold);
  font-weight: 600;
}

.page-callout.callout-red {
  border-color: color-mix(in srgb, var(--red) 24%, transparent);
  border-left-color: var(--red);
  background: var(--red-bg);
  box-shadow: inset 2px 0 0 var(--red);
}

.page-callout.callout-red strong {
  color: var(--red);
}

/* Tables --------------------------------------------------------- */

.table-scroll {
  width: 100%;
  margin: 24px 0;
  overflow-x: auto;
  border: 1px solid var(--border-zinc);
  border-radius: var(--r-panel);
  background: var(--surface);
  scrollbar-width: thin;
  scrollbar-color: var(--border-light) transparent;
}

.table-scroll:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 3px;
}

.weight-table {
  width: 100%;
  min-width: 720px;
  border-collapse: collapse;
  font-size: 12px;
  line-height: 1.55;
}

.weight-table th {
  padding: 11px 14px;
  border-bottom: 1px solid var(--border);
  background: var(--surface-alt);
  color: var(--text-dim);
  font-family: var(--mono);
  font-size: 8px;
  font-weight: 600;
  letter-spacing: .11em;
  text-align: left;
  text-transform: uppercase;
}

.weight-table td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--border-zinc);
  color: var(--text-muted);
  vertical-align: top;
}

.weight-table td:first-child {
  color: var(--text);
  font-weight: 500;
}

.weight-table tr:last-child td {
  border-bottom: 0;
}

.weight-table tbody tr:hover {
  background: var(--gold-bg);
}

.wt-mono {
  color: var(--gold) !important;
  font-family: var(--mono);
  font-size: 10px;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

/* Retained for archived model notes in the document. */
.archived-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  margin-left: 10px;
  padding: 3px 9px;
  border: 1px solid var(--border);
  border-radius: var(--r-ctl);
  background: var(--surface-alt);
  color: var(--text-dim);
  font-size: 8px;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  vertical-align: middle;
}

/* Responsive ----------------------------------------------------- */

@media (max-width: 860px) {
  .methodology-masthead {
    min-height: 0;
    grid-template-columns: 1fr;
    gap: 42px;
    padding: 68px 0 62px;
  }

  .methodology-scope {
    display: grid;
    grid-template-columns: minmax(190px, .7fr) minmax(0, 1.3fr);
  }

  .scope-kicker,
  .methodology-scope h2 {
    grid-column: 1;
  }

  .scope-kicker {
    border-right: 1px solid var(--border-zinc);
  }

  .methodology-scope h2 {
    border-right: 1px solid var(--border-zinc);
    border-bottom: 0;
  }

  .methodology-scope dl {
    grid-row: 1 / span 2;
    grid-column: 2;
  }
}

@media (max-width: 820px) {
  .methodology-index {
    top: 58px;
    padding-inline: 16px;
  }

  .page-section {
    scroll-margin-top: 118px;
  }
}

@media (max-width: 620px) {
  .page-wrap {
    width: min(100% - 32px, var(--max-w));
  }

  .methodology-masthead {
    gap: 34px;
    padding: 54px 0 48px;
  }

  .page-h1 {
    font-size: clamp(38px, 12vw, 52px);
  }

  .page-lead {
    margin-top: 20px;
    font-size: 14px;
  }

  .methodology-scope {
    display: block;
  }

  .scope-kicker,
  .methodology-scope h2 {
    border-right: 0;
  }

  .methodology-scope h2 {
    border-bottom: 1px solid var(--border-zinc);
  }

  .methodology-scope dl > div {
    grid-template-columns: 105px minmax(0, 1fr);
  }

  .methodology-index {
    margin-inline: -16px;
  }

  .page-section {
    padding: 50px 0;
  }

  .page-h2 {
    align-items: flex-start;
    gap: 10px;
    font-size: 28px;
  }

  .page-h2::before {
    margin-top: 8px;
  }

  .page-p {
    font-size: 14px;
    line-height: 1.75;
  }

  .method-block {
    grid-template-columns: 34px minmax(0, 1fr);
    gap: 13px;
  }

  .method-num {
    width: 32px;
    height: 32px;
  }

  .formula-block {
    margin-right: -4px;
    margin-left: -4px;
    padding: 16px;
    font-size: 11px;
  }

  .formula-note {
    margin: 11px -16px -16px;
    padding: 11px 16px 13px;
  }

  .page-callout {
    padding: 16px;
  }
}

@media (max-width: 420px) {
  .pdf-export-bar {
    align-items: flex-start;
    flex-direction: column;
  }

  .pdf-btn {
    width: 100%;
  }

  .methodology-scope dl > div {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .page-h2 {
    display: block;
  }

  .page-h2::before {
    display: block;
    margin: 0 0 10px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .pdf-btn,
  .methodology-index a {
    transition: none;
  }
}