/* VectorOS — method page styles.
   Built on top of colors_and_type.css, landing.css, pages.css.
   Hero lives in pages.css (.page-hero); this file owns method-specific blocks. */

/* =========================================================================
   РАЗРЫВ — gap table. Two-column wide table with category | breakdown.
   ========================================================================= */
.gap-table {
  width: 100%;
  border-collapse: collapse;
  border: var(--border);
}
.gap-table tr { transition: background var(--dur-instant); }
.gap-table tbody tr:hover { background: var(--bg-2); }
.gap-table th, .gap-table td {
  text-align: left;
  padding: 22px 24px;
  border-bottom: var(--border-subtle);
  vertical-align: top;
  font-size: 14px;
  line-height: 1.55;
  color: var(--fg-2);
  text-wrap: pretty;
}
.gap-table tbody tr:last-child td { border-bottom: 0; }
.gap-table th {
  font-family: var(--font-mono);
  font-size: var(--t-label);
  letter-spacing: var(--tr-label);
  text-transform: uppercase;
  color: var(--fg-3);
  font-weight: 500;
  width: 38%;
  background: transparent;
}
.gap-table th + th { width: 62%; border-left: var(--border-subtle); }
.gap-table td.cat {
  font-family: var(--font-sans);
  font-weight: 500;
  color: var(--fg-1);
  width: 38%;
  letter-spacing: -0.005em;
  font-size: 15px;
}
.gap-table td.gap { border-left: var(--border-subtle); }
.gap-table td.gap strong { color: var(--fg-1); font-weight: 500; }
.gap-table td .num {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--t-label);
  letter-spacing: var(--tr-label);
  color: var(--fg-3);
  margin-bottom: 6px;
}

/* The closing sentence — accent tick on the left, full-width strap. */
.gap-strap {
  margin-top: 32px;
  padding: 28px 32px;
  border: var(--border);
  position: relative;
  font-size: 17px;
  line-height: 1.55;
  color: var(--fg-1);
  text-wrap: balance;
  max-width: 80ch;
}
.gap-strap::before {
  content: ""; position: absolute; top: 0; left: 0;
  width: 24px; height: 2px; background: var(--accent);
}
.gap-strap strong { color: var(--fg-1); font-weight: 500; }
.gap-strap .dim { color: var(--fg-3); }

/* =========================================================================
   ОНТОЛОГИЯ — what method sees. Light metaphor diagram + ontology cards.
   ========================================================================= */
.onto-diagram {
  margin: 0 0 64px;
  padding: 40px 32px;
  border: var(--border);
  background: var(--bg-1);
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 48px;
  align-items: center;
}
@media (max-width: 900px) {
  .onto-diagram { grid-template-columns: 1fr; gap: 32px; padding: 28px 24px; }
}
.onto-diagram__copy {
  font-size: 15px;
  line-height: 1.65;
  color: var(--fg-2);
  max-width: 56ch;
  text-wrap: pretty;
}
.onto-diagram__copy strong { color: var(--fg-1); font-weight: 500; }
.onto-diagram__viz {
  width: 320px; height: 200px;
  position: relative;
}
@media (max-width: 900px) { .onto-diagram__viz { width: 100%; max-width: 320px; margin: 0 auto; } }

.onto-section-label {
  font-family: var(--font-mono);
  font-size: var(--t-label);
  letter-spacing: var(--tr-label);
  text-transform: uppercase;
  color: var(--fg-3);
  margin: 0 0 16px;
  display: flex; align-items: center; gap: 12px;
}
.onto-section-label .bar { width: 24px; height: 1px; background: var(--line-2); }
.onto-section-label .id { color: var(--fg-2); }

.onto-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border: var(--border);
  background: var(--bg-1);
  margin-bottom: 56px;
}
@media (max-width: 1000px) { .onto-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px)  { .onto-grid { grid-template-columns: 1fr; } }

.onto-card {
  padding: 28px 28px 32px;
  border-right: var(--border-subtle);
  border-bottom: var(--border-subtle);
  background: transparent;
  cursor: pointer;
  position: relative;
  min-height: 240px;
  display: flex; flex-direction: column;
  transition: background var(--dur-instant);
}
.onto-card:hover { background: var(--bg-2); }
.onto-card[open] { background: var(--bg-2); }
.onto-card[open]::before {
  content: ""; position: absolute; top: 0; left: 0;
  width: 16px; height: 2px; background: var(--accent);
}
.onto-card > summary {
  list-style: none;
  display: flex; flex-direction: column; gap: 14px;
}
.onto-card > summary::-webkit-details-marker { display: none; }
.onto-card__head {
  display: flex; align-items: baseline; justify-content: space-between;
  font-family: var(--font-mono);
  font-size: var(--t-label);
  letter-spacing: var(--tr-label);
  text-transform: uppercase;
  color: var(--fg-3);
}
.onto-card__head .toggle {
  width: 14px; height: 14px;
  position: relative;
  display: inline-block;
}
.onto-card__head .toggle::before,
.onto-card__head .toggle::after {
  content: ""; position: absolute;
  background: var(--fg-2);
}
.onto-card__head .toggle::before {
  top: 6.5px; left: 0; right: 0; height: 1px;
}
.onto-card__head .toggle::after {
  top: 0; bottom: 0; left: 6.5px; width: 1px;
  transition: transform var(--dur-fast) var(--ease);
}
.onto-card[open] .toggle::after { transform: scaleY(0); }
.onto-card__term {
  font-family: var(--font-sans);
  font-weight: var(--w-light);
  font-size: 28px;
  line-height: 1.05;
  letter-spacing: -0.015em;
  color: var(--fg-1);
}
.onto-card__lead {
  font-size: 14px;
  line-height: 1.55;
  color: var(--fg-2);
  text-wrap: pretty;
}
.onto-card__body {
  font-size: 14px;
  line-height: 1.6;
  color: var(--fg-2);
  margin: 18px 0 0;
  padding: 18px 0 0;
  border-top: var(--border-subtle);
  text-wrap: pretty;
}
.onto-card__body p { margin: 0; }
.onto-card__body strong { color: var(--fg-1); font-weight: 500; }
.onto-card[open] .onto-card__lead {
  color: var(--fg-1);
}

/* Wider/feature card — used for "Вектор" as the central concept. */
.onto-card.is-feature {
  grid-column: span 2;
  background: var(--bg-2);
}
.onto-card.is-feature .onto-card__term { font-size: 36px; }
@media (max-width: 1000px) { .onto-card.is-feature { grid-column: span 2; } }
@media (max-width: 640px)  { .onto-card.is-feature { grid-column: span 1; } }

/* Edge rules: kill trailing borders */
.onto-grid--core .onto-card:nth-child(3n) { border-right: 0; }
@media (max-width: 1000px) {
  .onto-grid--core .onto-card { border-right: var(--border-subtle); }
  .onto-grid--core .onto-card:nth-child(2n) { border-right: 0; }
}
@media (max-width: 640px) {
  .onto-grid--core .onto-card { border-right: 0; }
}
.onto-grid--ext { grid-template-columns: repeat(2, 1fr); }
.onto-grid--ext .onto-card:nth-child(2n) { border-right: 0; }
@media (max-width: 640px) {
  .onto-grid--ext { grid-template-columns: 1fr; }
  .onto-grid--ext .onto-card { border-right: 0; }
}

/* =========================================================================
   СИГНАЛЫ — expandable table. Each row is a <details>.
   ========================================================================= */
.signals {
  border: var(--border);
  background: var(--bg-1);
}
.signals__head {
  display: grid;
  grid-template-columns: 60px minmax(0, 2fr) minmax(0, 1.4fr) minmax(0, 3fr) 28px;
  gap: 24px;
  padding: 16px 28px;
  border-bottom: var(--border-subtle);
  font-family: var(--font-mono);
  font-size: var(--t-label);
  letter-spacing: var(--tr-label);
  text-transform: uppercase;
  color: var(--fg-3);
}
@media (max-width: 800px) {
  .signals__head { display: none; }
}

.signals .sig {
  border-bottom: var(--border-subtle);
  cursor: pointer;
  transition: background var(--dur-instant);
}
.signals .sig:last-child { border-bottom: 0; }
.signals .sig:hover { background: var(--bg-2); }
.signals .sig[open] { background: var(--bg-2); }
.signals .sig[open] > summary { color: var(--fg-1); }

.signals .sig > summary {
  list-style: none;
  display: grid;
  grid-template-columns: 60px minmax(0, 2fr) minmax(0, 1.4fr) minmax(0, 3fr) 28px;
  gap: 24px;
  padding: 22px 28px;
  align-items: center;
  font-size: 14px;
  line-height: 1.5;
  color: var(--fg-2);
}
.signals .sig > summary::-webkit-details-marker { display: none; }
.signals .sig[open] {
  position: relative;
}
.signals .sig[open]::before {
  content: ""; position: absolute; top: 0; left: 0;
  width: 12px; height: 2px; background: var(--accent);
}

.signals .sig__id {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--fg-3);
}
.signals .sig__name {
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 16px;
  color: var(--fg-1);
  letter-spacing: -0.005em;
}
.signals .sig__level {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--fg-2);
}
.signals .sig__what {
  font-size: 14px;
  line-height: 1.5;
  color: var(--fg-2);
  text-wrap: pretty;
}
.signals .sig__toggle {
  justify-self: end;
  width: 14px; height: 14px;
  position: relative;
}
.signals .sig__toggle::before,
.signals .sig__toggle::after {
  content: ""; position: absolute;
  background: var(--fg-2);
}
.signals .sig__toggle::before { top: 6.5px; left: 0; right: 0; height: 1px; }
.signals .sig__toggle::after  { top: 0; bottom: 0; left: 6.5px; width: 1px; transition: transform var(--dur-fast) var(--ease); }
.signals .sig[open] .sig__toggle::after { transform: scaleY(0); }

.signals .sig__body {
  padding: 0 28px 28px;
  display: grid;
  grid-template-columns: 60px minmax(0, 2fr) minmax(0, 1.4fr) minmax(0, 3fr) 28px;
  gap: 24px;
}
.signals .sig__body .sig__body-inner {
  grid-column: 2 / 5;
  padding-top: 4px;
  border-top: var(--border-subtle);
  padding-top: 18px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--fg-2);
  text-wrap: pretty;
}
.signals .sig__body p { margin: 0 0 12px; }
.signals .sig__body p:last-child { margin-bottom: 0; }
.signals .sig__body .label {
  font-family: var(--font-mono);
  font-size: var(--t-label);
  letter-spacing: var(--tr-label);
  text-transform: uppercase;
  color: var(--fg-3);
  margin: 0 0 6px;
}
.signals .sig__body .label + p {
  color: var(--fg-1);
}

@media (max-width: 800px) {
  .signals .sig > summary,
  .signals .sig__body {
    grid-template-columns: 1fr;
    gap: 10px;
  }
  .signals .sig > summary { padding: 20px 20px; }
  .signals .sig__body { padding: 0 20px 24px; }
  .signals .sig__body .sig__body-inner { grid-column: 1; }
  .signals .sig__toggle { display: none; }
  .signals .sig__id { font-size: 10px; }
}

/* Closing note about interpretation */
.signals-note {
  margin-top: 24px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--fg-3);
  max-width: 64ch;
  text-wrap: pretty;
}
.signals-note strong { color: var(--fg-1); font-weight: 500; }

/* =========================================================================
   ПЕТЛИ — three loops side-by-side. Cold start as a strap below.
   ========================================================================= */
.loops {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border: var(--border);
  background: var(--bg-1);
}
@media (max-width: 900px) { .loops { grid-template-columns: 1fr; } }

.loop {
  padding: 36px 32px 40px;
  border-right: var(--border-subtle);
  display: flex; flex-direction: column;
  min-height: 320px;
  position: relative;
}
.loop:last-child { border-right: 0; }
@media (max-width: 900px) {
  .loop { border-right: 0; border-bottom: var(--border-subtle); min-height: 0; }
  .loop:last-child { border-bottom: 0; }
}
.loop__head {
  display: flex; align-items: baseline; justify-content: space-between;
  font-family: var(--font-mono);
  font-size: var(--t-label);
  letter-spacing: var(--tr-label);
  text-transform: uppercase;
  color: var(--fg-3);
  margin-bottom: 20px;
}
.loop__head .id { color: var(--fg-2); }
.loop__name {
  font-family: var(--font-sans);
  font-weight: var(--w-light);
  font-size: 36px;
  line-height: 1.02;
  letter-spacing: -0.02em;
  color: var(--fg-1);
  margin: 0 0 8px;
}
.loop__period {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--fg-2);
  text-transform: uppercase;
  margin-bottom: 22px;
}
.loop__body {
  font-size: 14px;
  line-height: 1.6;
  color: var(--fg-2);
  text-wrap: pretty;
  margin: 0 0 24px;
}
.loop__body strong { color: var(--fg-1); font-weight: 500; }
.loop__tick {
  margin-top: auto;
  padding-top: 18px;
  border-top: var(--border-subtle);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: var(--tr-label);
  text-transform: uppercase;
  color: var(--fg-3);
  display: flex; justify-content: space-between; gap: 12px;
}
.loop__tick .k { color: var(--fg-3); }
.loop__tick .v { color: var(--fg-1); font-weight: 500; }

/* Cold start mini-block */
.cold-start {
  margin-top: 32px;
  padding: 28px 32px;
  border: var(--border);
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 32px;
  align-items: start;
}
@media (max-width: 800px) {
  .cold-start { grid-template-columns: 1fr; gap: 16px; padding: 24px; }
}
.cold-start__label {
  font-family: var(--font-mono);
  font-size: var(--t-label);
  letter-spacing: var(--tr-label);
  text-transform: uppercase;
  color: var(--fg-2);
  font-weight: 500;
}
.cold-start__body {
  font-size: 14px;
  line-height: 1.65;
  color: var(--fg-2);
  text-wrap: pretty;
}
.cold-start__body strong { color: var(--fg-1); font-weight: 500; }
.cold-start__body em {
  font-style: normal;
  color: var(--fg-3);
}

/* =========================================================================
   ГРАНИЦА — inverted section. Paper-on-instrument feel.
   Pure black inset stage with content set off by hairlines.
   ========================================================================= */
.boundary {
  background: var(--bg-0);              /* pure #000 — reserved for inset stages */
  border-top: var(--border-subtle);
  border-bottom: var(--border-subtle);
  padding: var(--pad-section) 0;
  position: relative;
}
.boundary::before {
  /* faint graticule on the inset stage */
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(to right,  rgba(255,255,255,0.025) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
}
.boundary .shell { position: relative; z-index: 1; }
.boundary__head {
  display: grid;
  grid-template-columns: minmax(0, 3fr) minmax(0, 7fr);
  gap: 64px;
  margin-bottom: 80px;
  align-items: start;
}
@media (max-width: 900px) {
  .boundary__head { grid-template-columns: 1fr; gap: 24px; margin-bottom: 56px; }
}
.boundary .num {
  font-family: var(--font-mono);
  font-size: var(--t-label);
  letter-spacing: var(--tr-label);
  color: var(--fg-3);
  text-transform: uppercase;
}
.boundary h2 {
  font-family: var(--font-sans);
  font-weight: var(--w-light);
  font-size: clamp(36px, 5vw, 64px);
  line-height: 1;
  letter-spacing: -0.02em;
  margin: 0 0 28px;
  color: var(--fg-1);
  text-wrap: balance;
  max-width: 18ch;
}
.boundary__lede {
  font-size: 16px;
  line-height: 1.6;
  color: var(--fg-2);
  margin: 0;
  max-width: 56ch;
}
.boundary__lede strong { color: var(--fg-1); font-weight: 500; }

.declarations {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  border-left: 1px solid rgba(255, 255, 255, 0.1);
}
@media (max-width: 800px) { .declarations { grid-template-columns: 1fr; } }
.decl {
  padding: 36px 36px 40px;
  border-right: 1px solid rgba(255, 255, 255, 0.1);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  min-height: 200px;
  display: flex; flex-direction: column; gap: 14px;
}
@media (max-width: 800px) { .decl { padding: 28px 24px 32px; min-height: 0; } }
.decl__id {
  font-family: var(--font-mono);
  font-size: var(--t-label);
  letter-spacing: var(--tr-label);
  text-transform: uppercase;
  color: var(--fg-3);
}
.decl__h {
  font-family: var(--font-sans);
  font-weight: var(--w-light);
  font-size: 32px;
  line-height: 1.08;
  letter-spacing: -0.015em;
  color: var(--fg-1);
  margin: 0;
  text-wrap: balance;
}
.decl__h em { font-style: normal; color: var(--accent); }
.decl__body {
  font-size: 14px;
  line-height: 1.6;
  color: var(--fg-2);
  text-wrap: pretty;
  margin: 0;
}
.decl__body strong { color: var(--fg-1); font-weight: 500; }

/* The 5th declaration is the standout — full-width */
.decl.is-wide {
  grid-column: 1 / -1;
  background: rgba(255, 79, 0, 0.04);
}
.decl.is-wide .decl__h { font-size: 36px; max-width: 24ch; }

/* =========================================================================
   ОСНОВАНИЯ — three paths. Final navigation, not a CTA farm.
   ========================================================================= */
.paths {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border: var(--border);
}
@media (max-width: 900px) { .paths { grid-template-columns: 1fr; } }
.path {
  padding: 40px 32px 44px;
  border-right: var(--border-subtle);
  display: flex; flex-direction: column;
  min-height: 280px;
  text-decoration: none;
  color: inherit;
  position: relative;
  transition: background var(--dur-instant);
}
.path:hover { background: var(--bg-2); }
.path:last-child { border-right: 0; }
@media (max-width: 900px) {
  .path { border-right: 0; border-bottom: var(--border-subtle); min-height: 0; }
  .path:last-child { border-bottom: 0; }
}
.path:hover::before {
  content: ""; position: absolute; top: 0; left: 0;
  width: 16px; height: 2px; background: var(--accent);
}
.path__head {
  display: flex; justify-content: space-between; align-items: baseline;
  font-family: var(--font-mono);
  font-size: var(--t-label);
  letter-spacing: var(--tr-label);
  text-transform: uppercase;
  color: var(--fg-3);
  margin-bottom: 20px;
}
.path__name {
  font-family: var(--font-sans);
  font-weight: var(--w-light);
  font-size: 36px;
  line-height: 1.02;
  letter-spacing: -0.02em;
  color: var(--fg-1);
  margin: 0 0 16px;
}
.path__body {
  font-size: 14px;
  line-height: 1.6;
  color: var(--fg-2);
  text-wrap: pretty;
  margin: 0 0 32px;
}
.path__arrow {
  margin-top: auto;
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--font-mono);
  font-size: var(--t-label);
  letter-spacing: var(--tr-label);
  text-transform: uppercase;
  color: var(--fg-2);
  transition: color var(--dur-instant);
}
.path:hover .path__arrow { color: var(--fg-1); }
.path__arrow svg { width: 14px; height: 14px; }

/* Final stamp line */
.method-stamp {
  margin-top: 56px;
  padding-top: 32px;
  border-top: var(--border-subtle);
  display: flex; justify-content: space-between; gap: 24px; flex-wrap: wrap;
  font-family: var(--font-mono);
  font-size: var(--t-label);
  letter-spacing: var(--tr-label);
  text-transform: uppercase;
  color: var(--fg-3);
}
.method-stamp .v { color: var(--fg-1); font-weight: 500; }

/* =========================================================================
   Section helpers specific to the method page
   ========================================================================= */
.section--method-tight { padding: 96px 0; }
.section--method-tight .section-head { margin-bottom: 56px; }

.section-intro {
  font-size: 16px;
  line-height: 1.65;
  color: var(--fg-2);
  max-width: 64ch;
  margin: 0 0 40px;
  text-wrap: pretty;
}
.section-intro strong { color: var(--fg-1); font-weight: 500; }


/* =========================================================================
   ПОЛНЫЙ МЕТОД — open license / GitHub card
   ========================================================================= */
.open-doc {
  display: block;
  border: var(--border);
  text-decoration: none;
  color: inherit;
  background: var(--bg-1);
  transition: background var(--dur-instant), border-color var(--dur-instant);
  position: relative;
}
.open-doc:not(.open-doc--soon):hover { background: var(--bg-2); }
.open-doc:not(.open-doc--soon):hover::before {
  content: ""; position: absolute; top: 0; left: 0;
  width: 24px; height: 2px; background: var(--accent);
}
.open-doc--soon { cursor: default; }
.open-doc--soon .open-doc__cta { color: var(--fg-3); }
.open-doc__soon {
  display: inline-flex; align-items: center; gap: 8px;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.open-doc__soon::before {
  content: ""; width: 6px; height: 6px; background: var(--accent);
}
.open-doc__cols {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border-bottom: var(--border-subtle);
}
@media (max-width: 900px) { .open-doc__cols { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 520px) { .open-doc__cols { grid-template-columns: 1fr; } }
.open-doc__col {
  padding: 28px 28px 32px;
  border-right: var(--border-subtle);
  display: flex; flex-direction: column; gap: 14px;
  min-height: 116px;
}
.open-doc__col:last-child { border-right: 0; }
@media (max-width: 900px) {
  .open-doc__col:nth-child(2n) { border-right: 0; }
  .open-doc__col:nth-child(-n+2) { border-bottom: var(--border-subtle); }
}
@media (max-width: 520px) {
  .open-doc__col { border-right: 0; border-bottom: var(--border-subtle); }
  .open-doc__col:last-child { border-bottom: 0; }
}
.open-doc__k {
  font-family: var(--font-mono);
  font-size: var(--t-label);
  letter-spacing: var(--tr-label);
  text-transform: uppercase;
  color: var(--fg-3);
}
.open-doc__v {
  font-family: var(--font-sans);
  font-weight: var(--w-light);
  font-size: 22px;
  letter-spacing: -0.01em;
  color: var(--fg-1);
}
.open-doc__cta {
  padding: 24px 28px;
  display: flex; justify-content: space-between; align-items: center; gap: 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--fg-2);
  transition: color var(--dur-instant);
}
.open-doc:not(.open-doc--soon):hover .open-doc__cta { color: var(--fg-1); }

/* =========================================================================
   ОСНОВАНИЯ — bibliography CTA cell inside .refs-grid
   ========================================================================= */
.refs-grid .ref-cell--cta {
  position: relative;
  color: inherit;
}
.refs-grid .ref-cell--cta .ref-cell__author { color: var(--fg-1); }
.refs-grid .ref-cell--cta .ref-cell__head .soon {
  display: inline-flex; align-items: center; gap: 6px;
  color: var(--accent);
}
.refs-grid .ref-cell--cta .ref-cell__head .soon::before {
  content: ""; width: 6px; height: 6px; background: var(--accent);
}