.api-contract-demo {
  --contract-accent: #675cf5;
  --contract-secondary: #19b8a6;
  --contract-success: #2bc986;
  --contract-ink: #eaf0ff;
  --contract-muted: #91a3c5;
  --contract-line: #2a3b5d;
  --contract-panel: #111f38;
  --contract-deep: #071326;
  display: grid;
  width: min(100%, 470px);
  gap: 8px;
  color: var(--contract-ink);
  font: 600 11px/1.35 "DM Sans", sans-serif;
}

.api-contract-toolbar {
  display: flex;
  min-height: 30px;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.api-contract-toolbar > span {
  display: flex;
  min-width: 0;
  align-items: center;
  gap: 7px;
  overflow: hidden;
  color: #63728b;
  font-size: 8px;
  font-weight: 900;
  letter-spacing: .09em;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.api-contract-toolbar > span i {
  width: 9px;
  height: 9px;
  flex: 0 0 auto;
  border: 2px solid var(--contract-accent);
  border-radius: 3px;
  box-shadow: inset 0 0 0 2px #fff, 0 0 0 3px color-mix(in srgb, var(--contract-accent) 12%, transparent);
  transform: rotate(45deg);
}

.api-contract-toolbar button {
  border: 1px solid #cbd4e5;
  border-radius: 7px;
  background: #fff;
  color: #5448dc;
  font: inherit;
  font-size: 9px;
  font-weight: 850;
  padding: 5px 8px;
  cursor: pointer;
}

.api-contract-toolbar button:hover { border-color: var(--contract-accent); }
.api-contract-toolbar button:focus-visible { outline: 2px solid var(--contract-accent); outline-offset: 2px; }

.api-contract-editor {
  overflow: hidden;
  border: 1px solid var(--contract-line);
  border-radius: 11px;
  background:
    linear-gradient(rgba(255,255,255,.025) 1px, transparent 1px) 0 0 / 100% 22px,
    radial-gradient(circle at 93% 0%, color-mix(in srgb, var(--contract-accent) 24%, transparent), transparent 37%),
    linear-gradient(145deg, var(--contract-panel), var(--contract-deep));
  box-shadow: inset 0 1px rgba(255,255,255,.06), 0 10px 26px rgba(13,32,62,.12);
}

.api-contract-filebar {
  display: grid;
  min-height: 36px;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 7px;
  border-bottom: 1px solid var(--contract-line);
  background: rgba(4,12,26,.46);
  padding: 6px 9px;
}

.api-contract-filebar > span {
  border: 1px solid color-mix(in srgb, var(--contract-accent) 68%, white);
  border-radius: 5px;
  color: #b8b3ff;
  font: 900 6.5px/1 "IBM Plex Mono", monospace;
  letter-spacing: .05em;
  padding: 5px;
}

.api-contract-filebar code {
  min-width: 0;
  overflow: hidden;
  color: var(--contract-ink);
  font: 600 8px/1.4 "IBM Plex Mono", monospace;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.api-contract-filebar b {
  border: 1px solid #53647f;
  border-radius: 999px;
  color: var(--contract-muted);
  font-size: 6px;
  letter-spacing: .08em;
  padding: 4px 6px;
  transition: color 220ms, border-color 220ms, background 220ms;
}

.api-contract-comparison {
  display: grid;
  min-height: 102px;
  grid-template-columns: minmax(0, 1fr) 32px minmax(0, 1fr);
  align-items: center;
  gap: 5px;
  padding: 11px 9px;
}

.api-contract-pane {
  display: grid;
  min-width: 0;
  min-height: 68px;
  align-content: center;
  gap: 4px;
  border: 1px solid var(--contract-line);
  border-radius: 8px;
  background: rgba(255,255,255,.035);
  padding: 8px;
  transition: transform 220ms, border-color 220ms, background 220ms;
}

.api-contract-pane small {
  color: var(--contract-muted);
  font-size: 6.5px;
  font-weight: 900;
  letter-spacing: .12em;
}

.api-contract-pane strong,
.api-contract-pane span {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.api-contract-pane strong {
  color: var(--contract-ink);
  font: 650 8px/1.3 "IBM Plex Mono", monospace;
}

.api-contract-pane span { color: var(--contract-muted); font-size: 7px; }

.api-contract-check { position: relative; display: grid; height: 36px; place-items: center; }
.api-contract-check i { width: 100%; height: 2px; overflow: hidden; border-radius: 2px; background: var(--contract-line); }
.api-contract-check i::before {
  content: "";
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--contract-accent), var(--contract-secondary));
  transition: width 420ms ease;
}
.api-contract-check b {
  position: absolute;
  display: grid;
  width: 18px;
  height: 18px;
  place-items: center;
  border: 1px solid var(--contract-line);
  border-radius: 50%;
  background: var(--contract-deep);
  color: var(--contract-muted);
  font-size: 9px;
  transition: color 220ms, border-color 220ms, box-shadow 220ms;
}

.api-contract-demo > small {
  min-height: 15px;
  overflow: hidden;
  color: #63728b;
  font-size: 8.5px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.api-contract-demo.is-active .api-contract-check i::before { width: 100%; }
.api-contract-demo.is-active .api-contract-check b { border-color: var(--contract-success); color: var(--contract-success); box-shadow: 0 0 0 4px color-mix(in srgb, var(--contract-success) 13%, transparent); }
.api-contract-demo.is-active .api-contract-filebar b { border-color: var(--contract-success); background: color-mix(in srgb, var(--contract-success) 11%, transparent); color: #6ce1aa; }
.api-contract-demo.is-active .api-contract-pane-source { border-color: color-mix(in srgb, var(--contract-accent) 70%, var(--contract-line)); transform: translateX(1px); }
.api-contract-demo.is-active .api-contract-pane-guarantee { border-color: color-mix(in srgb, var(--contract-success) 75%, var(--contract-line)); background: color-mix(in srgb, var(--contract-success) 8%, transparent); transform: translateX(-1px); }

.api-contract-demo-openapi { --contract-accent: #fb596f; --contract-secondary: #ffad5b; }
.api-contract-demo-schema { --contract-accent: #8b66f6; --contract-secondary: #4ea1ff; }
.api-contract-demo-events { --contract-accent: #ef7b45; --contract-secondary: #ffd05a; }
.api-contract-demo-rpc { --contract-accent: #3b82f6; --contract-secondary: #34d3c5; }
.api-contract-demo-evolution { --contract-accent: #e56aaf; --contract-secondary: #9d7cf5; }
.api-contract-demo-verification { --contract-accent: #12af82; --contract-secondary: #63d78b; }
.api-contract-demo-workflow { --contract-accent: #7367ed; --contract-secondary: #e36fc0; }

.concept-card[data-card-id^="api-contract-"] .concept-card-header h4 { overflow-wrap: anywhere; }
.concept-card-preview .api-contract-demo { font-size: 7px; }
.concept-card-preview .api-contract-toolbar > span { max-width: 92px; font-size: 6.2px; }
.concept-card-preview .api-contract-toolbar button { max-width: 86px; min-height: 24px; overflow: hidden; font-size: 7px; line-height: 1.15; padding: 3px 5px; text-overflow: ellipsis; white-space: nowrap; }
.concept-card-preview .api-contract-filebar { min-height: 30px; gap: 4px; padding: 5px 6px; }
.concept-card-preview .api-contract-filebar > span { font-size: 5.2px; padding: 4px; }
.concept-card-preview .api-contract-filebar code { font-size: 6.2px; }
.concept-card-preview .api-contract-filebar b { font-size: 5px; padding: 3px 4px; }
.concept-card-preview .api-contract-comparison { min-height: 83px; grid-template-columns: minmax(0,1fr) 23px minmax(0,1fr); gap: 3px; padding: 7px 6px; }
.concept-card-preview .api-contract-pane { min-height: 58px; gap: 3px; padding: 5px; }
.concept-card-preview .api-contract-pane strong { font-size: 6.2px; }
.concept-card-preview .api-contract-pane span { font-size: 5.5px; }
.concept-card-preview .api-contract-check b { width: 15px; height: 15px; font-size: 7px; }

[data-theme="dark"] .api-contract-toolbar > span,
[data-theme="dark"] .api-contract-demo > small { color: #94a5c2; }
[data-theme="dark"] .api-contract-toolbar button { border-color: #43526c; background: #172238; color: #aaa4ff; }

@media (max-width: 560px) {
  .api-contract-demo { width: 100%; }
  .api-contract-comparison { grid-template-columns: minmax(0,1fr) 28px minmax(0,1fr); }
}

@media (prefers-reduced-motion: reduce) {
  .api-contract-check i::before,
  .api-contract-check b,
  .api-contract-pane,
  .api-contract-filebar b { transition: none; }
}

@media (forced-colors: active) {
  .api-contract-editor,
  .api-contract-pane,
  .api-contract-toolbar button,
  .api-contract-check b { border: 1px solid CanvasText; }
  .api-contract-check i { background: CanvasText; }
}