/**
 * tools-fabric-diagram.css
 * Component styles specific to the Hyperledger Fabric Diagram tool.
 * Depends on tokens from tools.css (loaded first). SVG fills/strokes use brand
 * hex values inline (set in JS) since SVG attributes need concrete colors.
 */

.fb-intro {
  color: var(--tool-text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
  max-width: 72ch;
  margin: -4px 0 18px;
}

html[dir="rtl"] .fb-grid,
html[dir="rtl"] .fb-steps {
  direction: rtl;
}

:where(.fb-prop__k, .fb-prop__v, .fb-step__text) {
  overflow-wrap: anywhere;
}
.fb-intro strong { color: var(--tool-text-primary); font-weight: 600; }

.fb-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 16px;
  align-items: start;
}
@media (max-width: 760px) {
  .fb-layout { grid-template-columns: 1fr; }
}

/* ---- Diagram ---- */
.fb-diagram {
  background: var(--tool-bg-secondary);
  border: 1px solid var(--tool-border);
  border-radius: var(--tool-radius);
  padding: 12px;
}
.fb-diagram svg { width: 100%; height: auto; display: block; max-width: 760px; margin-inline: auto; }

.fb-node { cursor: pointer; }
.fb-node:focus-visible { outline: none; }
.fb-node:focus-visible .fb-node__rect {
  stroke-width: 3.5;
  filter: drop-shadow(0 0 6px var(--tool-accent-blue));
}

.fb-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  margin-block-start: 14px;
  padding-block-start: 12px;
  border-block-start: 1px solid var(--tool-border);
}
.fb-leg { display: flex; align-items: center; gap: 7px; font-size: 0.76rem; color: var(--tool-text-secondary); }
.fb-leg__dot { width: 11px; height: 11px; border-radius: 3px; flex-shrink: 0; }

/* ---- Info panel ---- */
.fb-info {
  background: var(--tool-bg-secondary);
  border: 1px solid var(--tool-border);
  border-radius: var(--tool-radius);
  padding: 18px;
  position: sticky;
  top: 12px;
}
.fb-info__eyebrow {
  font-size: 0.7rem;
  color: var(--tool-text-muted);
  font-family: var(--tool-mono);
  margin-block-end: 4px;
}
.fb-info__title {
  margin: 0 0 8px;
  font-family: var(--tool-display);
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--tool-accent-blue);
}
.fb-info__desc { font-size: 0.85rem; color: var(--tool-text-secondary); line-height: 1.6; }

.fb-props { margin-block-start: 14px; }
.fb-prop {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 6px 0;
  border-block-end: 1px solid var(--tool-border);
  font-size: 0.78rem;
}
.fb-prop:last-child { border-block-end: none; }
.fb-prop__k { color: var(--tool-text-muted); }
.fb-prop__v { color: var(--tool-text-primary); font-weight: 600; text-align: right; }

.fb-hint { color: var(--tool-text-muted); font-size: 0.76rem; margin-block-start: 10px; }

/* ---- Transaction stepper ---- */
.fb-steps { margin-block-start: 14px; }
.fb-steps[hidden] { display: none; }
.fb-steps__count {
  font-family: var(--tool-mono);
  font-size: 0.72rem;
  color: var(--tool-accent-blue);
  margin-block-end: 8px;
}
.fb-steps__bar {
  height: 5px;
  background: var(--tool-bg-tertiary);
  border-radius: 3px;
  overflow: hidden;
  margin-block-end: 12px;
}
.fb-steps__fill {
  height: 100%; width: 0;
  background: var(--tool-accent-blue);
  border-radius: 3px;
  transition: width 0.4s var(--tool-ease);
}
.fb-steps__list { display: flex; flex-direction: column; gap: 4px; }
.fb-steps__item {
  font-size: 0.76rem;
  color: var(--tool-text-muted);
  padding: 4px 8px;
  border-radius: var(--tool-radius-sm);
  display: flex;
  gap: 8px;
  align-items: baseline;
  transition: color 0.2s, background 0.2s;
}
.fb-steps__item.is-active { color: var(--tool-text-primary); background: var(--tool-bg-tertiary); }
.fb-steps__item.is-done { color: var(--tool-accent-green); }
.fb-steps__num { font-family: var(--tool-mono); font-size: 0.7rem; flex-shrink: 0; }

.fb-actions { display: flex; gap: 10px; margin-block-start: 16px; flex-wrap: wrap; }
.fb-btn {
  flex: 1;
  background: var(--tool-accent-blue);
  color: var(--tool-text-inverse, #061117);
  border: none;
  border-radius: var(--tool-radius-sm);
  font-family: var(--tool-font);
  font-weight: 700;
  font-size: 0.85rem;
  padding: 10px 16px;
  cursor: pointer;
  transition: filter 0.2s, opacity 0.2s;
}
.fb-btn:hover { filter: brightness(1.08); }
.fb-btn:disabled { opacity: 0.45; cursor: not-allowed; }

.fb-xp {
  display: inline-block;
  margin-block-start: 12px;
  background: var(--tool-accent-green);
  color: var(--tool-text-inverse, #061117);
  border-radius: 999px;
  padding: 5px 14px;
  font-weight: 700;
  font-size: 0.8rem;
}
.fb-xp[hidden] { display: none; }