/* Public-safe component contracts. Direct controls, bounded claims, no scroll dependency. */
.architecture-contracts-section { padding-top: clamp(92px, 10vw, 150px); }
.contract-explorer { margin-top: 46px; overflow: hidden; }
.contract-command { min-width: 0; }
.contract-layout { display: grid; grid-template-columns: minmax(230px, .58fr) minmax(0, 1.42fr); min-height: 620px; }

.contract-nav {
  display: grid;
  align-content: start;
  border-right: 1px solid var(--hairline-strong);
  background: rgba(3, 8, 17, .96);
}
.contract-nav button {
  min-width: 0;
  min-height: 66px;
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr) auto;
  gap: 11px;
  align-items: center;
  padding: 10px 14px;
  border: 0;
  border-bottom: 1px solid var(--hairline);
  background: transparent;
  color: var(--ink-dim);
  text-align: left;
  cursor: pointer;
  transition: color var(--motion-instant), background var(--motion-instant), box-shadow var(--motion-signal);
}
.contract-nav button span,
.contract-nav button small {
  font: 500 8px var(--font-mono);
  letter-spacing: .11em;
}
.contract-nav button span { color: var(--cobalt-soft); }
.contract-nav button b { min-width: 0; overflow: hidden; text-overflow: ellipsis; font-size: 13px; white-space: nowrap; }
.contract-nav button small { color: var(--ink-faint); text-align: right; }
.contract-nav button:hover,
.contract-nav button.is-active {
  color: var(--ink);
  background: rgba(59, 109, 255, .08);
  box-shadow: inset 2px 0 0 var(--cyan);
}
.contract-nav button:disabled { cursor: default; opacity: .54; }

.contract-panel {
  min-width: 0;
  padding: clamp(26px, 4vw, 56px);
  background:
    radial-gradient(circle at 78% 20%, rgba(59,109,255,.1), transparent 34%),
    linear-gradient(180deg, rgba(8,17,33,.98), rgba(3,8,17,.98));
}
.contract-panel > header { display: flex; justify-content: space-between; gap: 24px; align-items: flex-start; }
.contract-panel > header span,
.contract-panel > header > b {
  font: 550 9px var(--font-mono);
  letter-spacing: .13em;
}
.contract-panel > header span { color: var(--cobalt-soft); }
.contract-panel > header > b { color: var(--cyan); }
.contract-panel h3 { margin-top: 12px; font-size: clamp(34px, 4vw, 58px); }
.contract-panel > p:not(.contract-disclosure) {
  max-width: 72ch;
  margin-top: 20px;
  color: var(--ink-dim);
  font-size: 16px;
  line-height: 1.65;
}

.contract-fields { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); margin: 34px 0 0; border: 1px solid var(--hairline); }
.contract-fields > div { min-width: 0; min-height: 150px; padding: 20px; border-right: 1px solid var(--hairline); border-bottom: 1px solid var(--hairline); }
.contract-fields > div:nth-child(2n) { border-right: 0; }
.contract-fields > div:nth-last-child(-n+2) { border-bottom: 0; }
.contract-fields dt {
  color: var(--cobalt-soft);
  font: 550 9px var(--font-mono);
  letter-spacing: .14em;
}
.contract-fields dd { margin: 14px 0 0; color: var(--ink-dim); font-size: 14px; line-height: 1.58; }
.contract-fields > div:last-child dd { color: #c1cbd8; }

.contract-direction {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(28px, .42fr) minmax(120px, .72fr) minmax(28px, .42fr) minmax(0, 1fr);
  gap: 12px;
  align-items: center;
  margin-top: 28px;
  padding: 16px;
  border: 1px solid var(--hairline);
  background: rgba(2, 7, 15, .7);
  text-align: center;
  font: 550 8px var(--font-mono);
  letter-spacing: .11em;
}
.contract-direction span { color: var(--ink-faint); }
.contract-direction b { color: var(--cyan); }
.contract-direction i { height: 1px; background: linear-gradient(90deg, var(--cobalt), var(--cyan)); position: relative; }
.contract-direction i::after {
  content: "";
  position: absolute;
  right: 0;
  top: -3px;
  width: 6px;
  height: 6px;
  border-top: 1px solid var(--cyan);
  border-right: 1px solid var(--cyan);
  transform: rotate(45deg);
}
.contract-disclosure {
  margin-top: 18px;
  color: var(--ink-faint);
  font: 500 9px/1.55 var(--font-mono);
  letter-spacing: .06em;
}

@media (max-width: 980px) {
  .contract-layout { grid-template-columns: 1fr; min-height: 0; }
  .contract-nav {
    grid-template-columns: repeat(3, minmax(180px, 1fr));
    overflow-x: auto;
    border-right: 0;
    border-bottom: 1px solid var(--hairline-strong);
    scroll-snap-type: x mandatory;
  }
  .contract-nav button { scroll-snap-align: start; border-right: 1px solid var(--hairline); }
}

@media (max-width: 680px) {
  .contract-nav {
    grid-template-columns: 1fr;
    overflow-x: visible;
    scroll-snap-type: none;
  }
  .contract-nav button { border-right: 0; }
  .contract-panel { padding: 24px 18px; }
  .contract-panel > header { display: block; }
  .contract-panel > header > b { display: block; margin-top: 12px; }
  .contract-fields { grid-template-columns: 1fr; }
  .contract-fields > div,
  .contract-fields > div:nth-child(2n),
  .contract-fields > div:nth-last-child(-n+2) { min-height: 0; border-right: 0; border-bottom: 1px solid var(--hairline); }
  .contract-fields > div:last-child { border-bottom: 0; }
  .contract-direction { grid-template-columns: 1fr; text-align: left; }
  .contract-direction i { width: 1px; height: 22px; margin-left: 12px; background: linear-gradient(var(--cobalt), var(--cyan)); }
  .contract-direction i::after { right: -3px; top: auto; bottom: 0; transform: rotate(135deg); }
}

@media (prefers-reduced-motion: reduce) {
  .contract-nav button { transition: none; }
}