/* ─── Main Visualization Area ─── */

.main {
  grid-column: 2;
  grid-row: 1;
  position: relative;
  overflow: hidden;
  z-index: 1;
}

.viz {
  width: 100%;
  height: 100%;
  position: relative;
}

.viz__graph {
  width: 100%;
  height: 100%;
  position: relative;
}

.viz__canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  cursor: grab;
}

.viz__canvas:active {
  cursor: grabbing;
}

/* ─── Legend (compact horizontal) ─── */

.legend {
  position: absolute;
  top: 12px;
  right: 12px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 0.35rem 0.75rem;
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 0.65rem;
  z-index: 10;
  backdrop-filter: blur(10px);
}

.legend__item {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.65rem;
  color: var(--text-dim);
  font-family: var(--font);
  white-space: nowrap;
}

.legend__dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  flex-shrink: 0;
}

.legend[hidden] {
  display: none;
}

/* ─── Welcome State ─── */

.welcome-state {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 5;
  text-align: center;
  padding: 2rem;
  pointer-events: none;
}

.welcome-state[hidden] {
  display: none;
}

.welcome-state__icon {
  font-size: 3rem;
  margin-bottom: 1rem;
  opacity: 0.8;
}

.welcome-state__title {
  font-family: var(--font);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text-bright);
  margin-bottom: 0.75rem;
}

.welcome-state__text {
  font-family: var(--font-ui);
  font-size: 0.85rem;
  color: var(--text);
  line-height: 1.6;
  max-width: 460px;
  margin-bottom: 1rem;
}

.welcome-state__text strong {
  color: var(--accent);
}

.welcome-state__flow {
  font-family: var(--font);
  font-size: 0.75rem;
  color: var(--accent);
  background: rgba(167, 139, 250, 0.08);
  border: 1px solid rgba(167, 139, 250, 0.15);
  padding: 0.5rem 1rem;
  border-radius: 20px;
  margin-bottom: 1rem;
  letter-spacing: 0.02em;
}

.welcome-state__hint {
  font-family: var(--font);
  font-size: 0.7rem;
  color: var(--text-dim);
}

/* ─── Zoom Controls ─── */

.zoom-controls {
  position: absolute;
  bottom: 12px;
  right: 12px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  z-index: 10;
}

.zoom-btn {
  width: 34px;
  height: 34px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 6px;
  font-size: 1rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s ease;
  font-family: var(--font);
}

.zoom-btn:hover {
  background: var(--bg-elevated);
  color: var(--text-bright);
  border-color: var(--accent);
}