/* Horizontal top stepper */
.stepper {
  display: flex;
  align-items: flex-end;
  width: 100%;
  margin-bottom: 24px;
  padding-bottom: 20px;
  border-bottom: 1px solid rgba(148, 163, 184, 0.25);
  font-family: inherit;
}

.stepGroup {
  display: flex;
  align-items: flex-end;
  flex: 1;
  min-width: 0;
}

.stepGroup:last-child {
  flex: 0 0 auto;
}

.stepUnit {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.stepDot {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 700;
  background: rgba(148, 163, 184, 0.2);
  color: var(--text-muted);
  border: 2px solid transparent;
  transition: background 0.2s, color 0.2s, border-color 0.2s;
}

.stepLabel {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  white-space: nowrap;
  transition: color 0.2s;
}

.stepActive .stepDot {
  background: rgba(var(--primary-rgb) / 0.15);
  color: var(--primary);
  border-color: var(--primary);
}

.stepActive .stepLabel {
  color: var(--primary);
}

.stepDone .stepDot {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
}

.stepDone .stepLabel {
  color: var(--text-secondary);
}

.connector {
  flex: 1;
  height: 2px;
  min-width: 24px;
  margin: 0 8px 13px;
  background: rgba(148, 163, 184, 0.3);
  border-radius: 1px;
  transition: background 0.2s;
}

.connectorDone {
  background: var(--primary);
}

@media (max-width: 520px) {
  .stepLabel {
    font-size: 11px;
  }

  .connector {
    min-width: 12px;
    margin: 0 4px 13px;
  }
}

/* Tall side panel — current step only */
.rail {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  width: 112px;
  flex-shrink: 0;
  min-height: 320px;
  align-self: stretch;
  padding: 18px 12px;
  background: var(--glass-bg);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  box-shadow: var(--glass-shadow);
  font-family: inherit;
}

.railCurrent {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  text-align: center;
  min-height: 160px;
}

.railIconWrap {
  width: 52px;
  height: 52px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 14px;
  color: var(--primary);
  background: rgba(var(--primary-rgb) / 0.14);
  border: 1px solid rgba(var(--primary-rgb) / 0.28);
}

.railTitle {
  font-size: 13px;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.35;
}

.railIndex {
  font-size: 11px;
  font-weight: 500;
  color: var(--text-muted);
}

@media (max-width: 760px) {
  .rail {
    width: 100%;
    min-height: 0;
    flex-direction: row;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 14px 16px;
  }

  .railCurrent {
    flex: 0 0 auto;
    min-height: 0;
    flex-direction: row;
    gap: 10px;
  }

  .railIconWrap {
    width: 44px;
    height: 44px;
    border-radius: 12px;
  }

  .railTitle {
    font-size: 14px;
  }

  .railIndex {
    display: none;
  }
}