.vqb-panel {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: background .25s, border-color .25s;
}

.vqb-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
  gap: 8px;
}
.vqb-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.vqb-label svg { color: var(--purple); }
.vqb-badge {
  padding: 2px 8px;
  background: rgba(180,142,245,.12);
  border: 1px solid rgba(180,142,245,.3);
  border-radius: 20px;
  font-size: 10px;
  font-weight: 700;
  color: var(--purple);
  letter-spacing: .04em;
}
.vqb-actions { display: flex; align-items: center; gap: 8px; }

.vqb-btn-clear {
  background: none;
  border: 1px solid var(--border-accent);
  color: var(--text-muted);
  padding: 5px 10px;
  border-radius: 6px;
  font-family: 'Inter', sans-serif;
  font-size: 11px;
  font-weight: 600;
  cursor: pointer;
  transition: all .18s;
}
.vqb-btn-clear:hover { border-color: var(--red); color: var(--red); }

.vqb-btn-generate {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--purple);
  color: #fff;
  border: none;
  padding: 6px 14px;
  border-radius: 7px;
  font-family: 'Inter', sans-serif;
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
  transition: background .18s, box-shadow .18s;
}
.vqb-btn-generate:hover { background: #9a6fe0; box-shadow: 0 0 16px rgba(180,142,245,.3); }
.vqb-btn-generate:disabled { opacity: .45; cursor: not-allowed; }

.vqb-body {
  padding: 20px 24px 8px;
  display: flex;
  flex-direction: column;
  gap: 0;
}

/* Connecting line between rows */
.vqb-connector {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 5px 0 5px 28px;
  position: relative;
}
.vqb-connector::before {
  content: '';
  position: absolute;
  left: 46px; top: 0; bottom: 0;
  width: 1px;
  background: var(--border-accent);
}
.vqb-connector-label {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--text-muted);
  background: var(--bg-surface);
  padding: 2px 8px;
  border-radius: 4px;
  border: 1px solid var(--border);
}
.vqb-connector-select {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .05em;
  color: var(--text-secondary);
  background: var(--bg-surface);
  border: 1px solid var(--border-accent);
  border-radius: 5px;
  padding: 2px 7px;
  cursor: pointer;
  outline: none;
  font-family: 'Inter', sans-serif;
}

.vqb-row {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  flex-wrap: wrap;
  animation: vqbFadeIn .22s ease;
  padding: 4px 0;
}
@keyframes vqbFadeIn {
  from { opacity: 0; transform: translateY(-5px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Row number badge */
.vqb-row-num {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--bg-hover);
  border: 1px solid var(--border-accent);
  font-size: 10px;
  font-weight: 700;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 10px;
}

.vqb-node { position: relative; display: flex; align-items: center; }

.vqb-pill {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 8px 13px;
  background: var(--bg-surface);
  border: 1.5px solid var(--border-accent);
  border-radius: 8px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-primary);
  cursor: pointer;
  transition: border-color .18s, background .18s;
  white-space: nowrap;
  user-select: none;
  min-width: 148px;
}
.vqb-pill:hover,
.vqb-pill.open { border-color: var(--accent); background: var(--accent-glow); }
.vqb-pill.has-value { border-color: var(--border-accent); }

.vqb-pill-dot {
  width: 9px; height: 9px;
  border-radius: 50%;
  flex-shrink: 0;
}
.vqb-pill-label { flex: 1; }
.vqb-pill-var {
  font-size: 10px;
  color: var(--syn-var);
  margin-left: 2px;
  opacity: .8;
}
.vqb-pill-chevron {
  opacity: .45;
  transition: transform .18s;
}
.vqb-pill.open .vqb-pill-chevron { transform: rotate(180deg); }

.vqb-rel-pill {
  min-width: 140px;
}
.vqb-rel-pill:hover,
.vqb-rel-pill.open { border-color: var(--amber) !important; background: rgba(240,192,96,.08) !important; color: var(--amber) !important; }
.vqb-rel-pill .vqb-pill-dot { background: var(--amber); }

.vqb-arrow {
  color: var(--border-accent);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  margin: 0 2px;
}

.vqb-row-opts {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
  margin-top: 2px;
  padding-left: 30px;
  animation: vqbFadeIn .18s ease;
}

.vqb-opt-btn {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 4px 9px;
  border-radius: 5px;
  border: 1px solid var(--border-accent);
  background: none;
  font-family: 'Inter', sans-serif;
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
  cursor: pointer;
  transition: all .15s;
}
.vqb-opt-btn:hover { border-color: var(--accent); color: var(--accent); }
.vqb-opt-btn.active { border-color: var(--accent); color: var(--accent); background: var(--accent-glow); }
.vqb-opt-btn.active-amber { border-color: var(--amber); color: var(--amber); background: rgba(240,192,96,.08); }
.vqb-opt-btn.active-green { border-color: var(--green); color: var(--green); background: rgba(78,201,160,.08); }

.vqb-inline-filter {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 5px 10px;
  border: 1px solid var(--border-accent);
  border-radius: 6px;
  background: var(--bg-surface);
  animation: vqbFadeIn .18s ease;
}
.vqb-inline-filter svg { color: var(--text-muted); flex-shrink: 0; }
.vqb-inline-filter input {
  background: none;
  border: none;
  outline: none;
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  color: var(--text-primary);
  caret-color: var(--accent);
  width: 140px;
}
.vqb-inline-filter input::placeholder { color: var(--text-muted); }

.vqb-filter-op {
  background: var(--bg-hover);
  border: none;
  border-right: 1px solid var(--border-accent);
  color: var(--text-secondary);
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  outline: none;
  cursor: pointer;
  padding: 0 6px;
  margin-right: 4px;
  border-radius: 3px 0 0 3px;
}

.vqb-order-select {
  background: var(--bg-surface);
  border: 1px solid var(--amber);
  border-radius: 6px;
  color: var(--amber);
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  font-weight: 600;
  outline: none;
  cursor: pointer;
  padding: 4px 8px;
  animation: vqbFadeIn .18s ease;
}

.vqb-btn-del {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 4px;
  border-radius: 5px;
  display: flex;
  align-items: center;
  transition: color .15s;
  flex-shrink: 0;
  margin-top: 8px;
}
.vqb-btn-del:hover { color: var(--red); }

/* Add row */
.vqb-add-row { padding: 8px 0 4px 0; }
.vqb-btn-add {
  display: flex;
  align-items: center;
  gap: 6px;
  background: none;
  border: 1px dashed var(--border-accent);
  color: var(--text-muted);
  padding: 7px 14px;
  border-radius: 7px;
  font-family: 'Inter', sans-serif;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: all .18s;
}
.vqb-btn-add:hover { border-color: var(--purple); color: var(--purple); background: rgba(180,142,245,.06); }

.vqb-controls-row {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 10px 24px 16px;
  flex-wrap: wrap;
  border-top: 1px solid var(--border);
  margin-top: 8px;
}
.vqb-ctrl-label {
  font-size: 11px;
  color: var(--text-muted);
  font-weight: 600;
  letter-spacing: .05em;
  text-transform: uppercase;
}
.vqb-ctrl-select {
  background: var(--bg-surface);
  border: 1px solid var(--border-accent);
  color: var(--text-primary);
  padding: 5px 10px;
  border-radius: 6px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  outline: none;
  cursor: pointer;
  transition: border-color .18s;
}
.vqb-ctrl-select:focus { border-color: var(--accent); }
.vqb-ctrl-toggle {
  display: flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  font-size: 11px;
  color: var(--text-secondary);
  font-weight: 600;
  user-select: none;
}
.vqb-ctrl-toggle input { accent-color: var(--accent); cursor: pointer; }

.vqb-sparql-preview {
  margin: 0 24px 20px;
  border-radius: 9px;
  overflow: hidden;
  border: 1px solid var(--border-accent);
  display: none;
}
.vqb-sparql-preview.visible { display: block; }

.vqb-sparql-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 14px;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border);
  gap: 8px;
  flex-wrap: wrap;
}
.vqb-sparql-title {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.vqb-sparql-actions { display: flex; align-items: center; gap: 6px; }
.vqb-sparql-copy {
  background: none;
  border: 1px solid var(--border-accent);
  color: var(--text-secondary);
  padding: 4px 10px;
  border-radius: 5px;
  font-family: 'Inter', sans-serif;
  font-size: 11px;
  font-weight: 600;
  cursor: pointer;
  transition: all .15s;
}
.vqb-sparql-copy:hover { border-color: var(--text-secondary); color: var(--text-primary); }
.vqb-sparql-send {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--accent);
  color: #fff;
  border: none;
  padding: 5px 12px;
  border-radius: 5px;
  font-family: 'Inter', sans-serif;
  font-size: 11px;
  font-weight: 700;
  cursor: pointer;
  transition: background .15s;
}
.vqb-sparql-send:hover { background: var(--accent-dim); }

.vqb-sparql-code {
  padding: 14px 16px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  line-height: 1.75;
  background: var(--bg-editor);
  color: var(--text-primary);
  white-space: pre;
  overflow-x: auto;
  margin: 0;
}

.vqb-kw  { color: var(--syn-keyword); }
.vqb-var { color: var(--syn-var); }
.vqb-uri { color: var(--accent); }
.vqb-str { color: var(--syn-string); }
.vqb-cmt { color: var(--syn-comment); }

.vqb-empty {
  padding: 36px 24px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}
.vqb-empty-icon {
  width: 48px; height: 48px;
  border-radius: 12px;
  background: rgba(180,142,245,.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--purple);
  margin-bottom: 4px;
}
.vqb-empty-title { font-size: 14px; font-weight: 700; color: var(--text-primary); }
.vqb-empty-desc  { font-size: 12px; color: var(--text-secondary); max-width: 380px; line-height: 1.6; }

.vqb-dropdown {
  position: fixed;
  width: min(400px, 92vw);
  background: var(--bg-panel);
  border: 1px solid var(--border-accent);
  border-radius: 10px;
  box-shadow: 0 16px 48px rgba(0,0,0,.5);
  z-index: 600;
  overflow: hidden;
  display: none;
  flex-direction: column;
  max-height: min(460px, 80vh);
  animation: vqbFadeIn .15s ease;
}
.vqb-dropdown.open { display: flex; }

.vqb-dd-search {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
.vqb-dd-search svg { color: var(--text-muted); flex-shrink: 0; }
.vqb-dd-search input {
  background: none; border: none; outline: none;
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  color: var(--text-primary);
  caret-color: var(--accent);
  width: 100%;
}
.vqb-dd-search input::placeholder { color: var(--text-muted); }

.vqb-dd-body {
  display: flex;
  flex: 1;
  min-height: 0;
  overflow: hidden;
}

.vqb-dd-list {
  flex: 1;
  overflow-y: auto;
  padding: 4px 0;
  border-right: 1px solid var(--border);
}
.vqb-dd-item {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 10px 13px;
  cursor: pointer;
  transition: background .1s;
  border-left: 2px solid transparent;
}
.vqb-dd-item:hover,
.vqb-dd-item.active { background: var(--bg-hover); border-left-color: var(--accent); }
.vqb-dd-item.active { background: var(--accent-glow); }

.vqb-dd-dot { width: 9px; height: 9px; border-radius: 50%; flex-shrink: 0; }
.vqb-dd-item-label { font-size: 12px; font-weight: 600; color: var(--text-primary); flex: 1; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.vqb-dd-item-sub   { font-size: 10px; color: var(--text-muted); font-family: 'JetBrains Mono', monospace; }
.vqb-dd-empty { padding: 24px 12px; text-align: center; font-size: 11px; color: var(--text-muted); font-family: 'JetBrains Mono', monospace; }

.vqb-dd-info {
  width: 150px;
  flex-shrink: 0;
  background: var(--bg-editor);
  padding: 14px 12px;
  display: flex;
  flex-direction: column;
  gap: 7px;
  overflow: hidden;
}
.vqb-dd-info-dot { width: 12px; height: 12px; border-radius: 50%; }
.vqb-dd-info-name { font-size: 12px; font-weight: 700; color: var(--text-primary); line-height: 1.3; }
.vqb-dd-info-desc { font-size: 11px; color: var(--text-secondary); line-height: 1.5; font-family: 'JetBrains Mono', monospace; }
.vqb-dd-info-graph { font-size: 10px; color: var(--text-muted); font-family: 'JetBrains Mono', monospace; margin-top: auto; padding-top: 6px; border-top: 1px solid var(--border); }
.vqb-dd-info-hint { font-size: 11px; color: var(--text-muted); font-style: italic; }

@media (max-width: 768px) {
  .vqb-body        { padding: 14px 14px 6px; }
  .vqb-controls-row{ padding: 8px 14px 12px; }
  .vqb-sparql-preview { margin: 0 14px 14px; }
  .vqb-pill        { min-width: 120px; padding: 7px 10px; font-size: 11px; }
  .vqb-dd-info     { display: none; }
  .vqb-dd-list     { border-right: none; }
}
@media (max-width: 520px) {
  .vqb-dropdown    { width: 96vw; }
  .vqb-row-opts    { padding-left: 0; }
}