.rng-controls {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
  align-items: end;
}

.rng-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.rng-field label {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.rng-field input,
.rng-field select {
  width: 100%;
  border: 1px solid var(--border-light);
  border-radius: 10px;
  padding: 0.75rem 0.9rem;
  font: inherit;
  background: var(--bg-white);
  color: var(--text-primary);
}

.rng-length-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 4px;
}

.rng-length-tab {
  border: 1px solid var(--border-light);
  border-radius: 8px;
  background: var(--bg-white);
  color: var(--text-secondary);
  font: inherit;
  font-size: 0.82rem;
  font-weight: 600;
  padding: 6px 14px;
  cursor: pointer;
  transition: background 0.12s, color 0.12s, border-color 0.12s;
}

.rng-length-tab.active {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.rng-note {
  margin-top: 14px;
}

.rng-results {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 12px;
}

.rng-card {
  border: 1px solid var(--border-light);
  border-radius: 12px;
  background: var(--bg-white);
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.rng-username {
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--text-primary);
}

.rng-meta {
  font-size: 0.82rem;
  color: var(--text-muted);
}

.rng-card-footer {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 4px;
  flex-wrap: wrap;
}

.rng-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 6px;
  letter-spacing: 0.02em;
}

.rng-badge-available {
  background: #d1fae5;
  color: #065f46;
}

.rng-badge-taken {
  background: #fee2e2;
  color: #991b1b;
}

.rng-badge-unknown {
  background: #f3f4f6;
  color: var(--text-secondary);
}

.rng-badge-checking {
  background: #fef3c7;
  color: #92400e;
}

.rng-check-link {
  font-size: 0.78rem;
  color: var(--accent);
  text-decoration: none;
  margin-left: auto;
  white-space: nowrap;
}

.rng-check-link:hover {
  text-decoration: underline;
}

.rng-empty {
  border: 1px dashed var(--border-light);
  border-radius: 10px;
  padding: 16px;
  color: var(--text-secondary);
  grid-column: 1 / -1;
}

.rng-availability-toggle {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
  font-size: 0.84rem;
  color: var(--text-secondary);
}

.rng-availability-toggle label {
  display: flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  font-weight: 600;
}

.rng-checker-result {
  margin-top: 12px;
}