/* ─── Right panel (question) ───────────────────────── */
.right {
  border-left: 1px solid var(--border);
  background: linear-gradient(180deg, var(--bg-elev), var(--bg));
  display: flex; flex-direction: column;
  min-height: 0;
}
.right-head {
  padding: 18px 20px 14px;
  border-bottom: 1px solid var(--border);
}
.right-head .meta {
  display: flex; align-items: center; gap: 8px;
  font-size: 10.5px;
  text-transform: uppercase;
  letter-spacing: 0.22em;
  color: var(--text-dim);
  margin-bottom: 6px;
}
.diff {
  padding: 2px 8px;
  border-radius: 2px;
  font-weight: 600;
  letter-spacing: 0.15em;
  font-size: 9.5px;
}
.diff.easy { background: rgba(163, 201, 104, 0.15); color: var(--success); }
.diff.medium { background: rgba(224, 138, 60, 0.15); color: var(--accent-bright); }
.diff.hard { background: rgba(229, 107, 90, 0.15); color: var(--error); }
.cat {
  padding: 2px 8px;
  border-radius: 2px;
  background: var(--surface-2);
  color: var(--text-muted);
  font-weight: 500;
  letter-spacing: 0.14em;
  font-size: 9.5px;
}
.right-head h2 {
  font-family: var(--serif);
  font-style: italic;
  font-size: 28px;
  font-weight: 400;
  color: var(--text);
  line-height: 1.15;
  letter-spacing: -0.01em;
}
.right-body {
  flex: 1;
  overflow: auto;
  padding: 16px 20px 20px;
  font-size: 13.5px;
  line-height: 1.62;
  color: var(--text-muted);
}
.right-body p { margin-bottom: 10px; }
.right-body strong { color: var(--text); font-weight: 600; }
.right-body code {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--accent-bright);
  background: var(--surface-2);
  padding: 1.5px 6px;
  border-radius: 3px;
}
.right-body h4 {
  font-family: var(--serif);
  font-style: italic;
  font-size: 17px;
  font-weight: 400;
  color: var(--text);
  margin: 16px 0 6px;
}
.hint-box {
  margin-top: 14px;
  padding: 10px 12px;
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-left: 2px solid var(--accent);
  border-radius: 3px;
  font-size: 12.5px;
  color: var(--text-muted);
}
.hint-toggle {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-muted);
  padding: 6px 10px;
  border-radius: 3px;
  font-size: 11px;
  cursor: pointer;
  font-family: var(--sans);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-top: 10px;
}
.hint-toggle:hover { color: var(--accent-bright); border-color: var(--accent); }

.action-row { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 14px; }
.action-row .hint-toggle,
.action-row .solution-toggle { margin-top: 0; }

.solution-toggle {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-muted);
  padding: 6px 10px;
  border-radius: 3px;
  font-size: 11px;
  cursor: pointer;
  font-family: var(--sans);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.solution-toggle:hover { color: var(--info); border-color: var(--info); }
.solution-toggle::before { content: "◆ "; font-size: 9px; opacity: 0.6; }

.solution-box {
  margin-top: 10px;
  padding: 12px 14px;
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-left: 2px solid var(--info);
  border-radius: 3px;
}
.solution-label {
  font-family: var(--serif);
  font-style: italic;
  font-size: 16px;
  font-weight: 400;
  color: var(--info);
  margin-bottom: 8px;
  letter-spacing: 0.01em;
}
.solution-label .note {
  display: block;
  font-family: var(--sans);
  font-style: normal;
  font-size: 11px;
  color: var(--text-dim);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-top: 2px;
}
.solution-code {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--text);
  background: var(--bg);
  padding: 10px 12px;
  border-radius: 3px;
  border: 1px solid var(--border);
  white-space: pre-wrap;
  overflow-x: auto;
  margin-bottom: 10px;
  line-height: 1.6;
}
.solution-code .kw { color: var(--accent-bright); font-weight: 500; }
.solution-code .str { color: #a3c968; }
.solution-code .num { color: #c5a3e0; }
.solution-code .cmt { color: var(--text-dim); font-style: italic; }

.copy-btn {
  background: var(--accent-soft);
  color: var(--accent-bright);
  border: 1px solid var(--accent);
  padding: 6px 12px;
  border-radius: 3px;
  font-size: 11px;
  cursor: pointer;
  font-family: var(--sans);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: 500;
  transition: all 0.15s;
}
.copy-btn:hover { background: var(--accent); color: #1a1208; }
.copy-btn::after { content: " →"; }

.right-foot {
  display: flex; gap: 6px;
  padding: 12px 16px;
  border-top: 1px solid var(--border);
  background: var(--surface);
}
.right-foot button {
  flex: 1;
  padding: 9px 10px;
  font-size: 11.5px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  border: 1px solid var(--border);
  background: var(--surface-1);
  color: var(--text-muted);
  border-radius: 3px;
  cursor: pointer;
  font-family: var(--sans);
  font-weight: 500;
}
.right-foot button:hover { color: var(--accent-bright); border-color: var(--accent); }

/* ─── Snippets Panel (left panel) ─────────────────── */
.snippet-search-wrap {
  margin: 10px 0 8px;
}
.snippet-search-wrap input {
  width: 100%;
  padding: 6px 10px;
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: 3px;
  color: var(--text);
  font-family: var(--sans);
  font-size: 12px;
}
.snippet-search-wrap input:focus {
  outline: none;
  border-color: var(--accent);
}

.snippet-cats {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
  margin-bottom: 10px;
}
.cat-chip {
  padding: 3px 8px;
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: 12px;
  font-size: 10.5px;
  color: var(--text-muted);
  cursor: pointer;
  font-family: var(--sans);
  transition: all 0.12s;
}
.cat-chip:hover { border-color: var(--accent); color: var(--accent-bright); }
.cat-chip.active { background: var(--accent-soft); border-color: var(--accent); color: var(--accent-bright); }

.snippet-panel-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 12px;
}
.snippet-panel-list .snippet-row {
  padding: 8px 10px;
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: 3px;
}
.snippet-panel-list .snippet-row .s-row-head {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 4px;
}
.snippet-panel-list .snippet-row .s-row-head .name {
  flex: 1;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--text);
}
.snippet-panel-list .snippet-row .preview {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text-dim);
  margin-bottom: 6px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.snippet-panel-list .snippet-row .s-row-actions {
  display: flex;
  gap: 6px;
}
.snippet-panel-list .snippet-row .ins-btn,
.snippet-panel-list .snippet-row .edit-btn {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--info);
  font-size: 10.5px;
  padding: 2px 8px;
  border-radius: 2px;
  cursor: pointer;
  font-family: var(--sans);
}
.snippet-panel-list .snippet-row .ins-btn:hover { background: var(--info); color: #0a1620; }
.snippet-panel-list .snippet-row .edit-btn:hover { border-color: var(--accent); color: var(--accent-bright); }
.snippet-panel-list .snippet-row .del {
  background: transparent;
  border: none;
  color: var(--text-dim);
  font-size: 13px;
  cursor: pointer;
  padding: 0 3px;
}
.snippet-panel-list .snippet-row .del:hover { color: var(--error); }

.snippet-new-btn-wrap {
  margin-top: 10px;
}
.snippet-new-btn-wrap .btn {
  width: 100%;
  padding: 8px 12px;
  font-size: 11.5px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

/* ─── Object Explorer ─────────────────────────── */
.obj-explorer {
  flex: 1;
  overflow: auto;
  padding: 8px;
  display: none;
}
.obj-explorer.visible { display: flex; flex-direction: column; }
.obj-tree { font-size: 13px; }
.obj-node { cursor: pointer; padding: 2px 6px; border-radius: 3px; }
.obj-node:hover { background: var(--hover); }
.obj-node[data-level="0"] { font-weight: 600; }
.obj-node[data-level="1"] { padding-left: 16px; }
.obj-node[data-level="2"] { padding-left: 28px; }
.obj-expandable::before { content: '▶'; font-size: 10px; margin-right: 4px; }
.obj-expandable.expanded::before { content: '▼'; }
.obj-icon { margin-right: 4px; }
.obj-tree .db-folder { color: var(--accent); }
.obj-tree .table-node::before { content: '🗄️ '; }
.obj-tree .view-node::before { content: '👁️ '; }
.obj-tree .proc-node::before { content: '⚡ '; }
.obj-tree .func-node::before { content: 'ƒ '; }
.obj-loading { font-size: 11px; color: var(--text-dim); padding: 4px 6px; }
.obj-section { margin-bottom: 10px; }
.obj-section-header { font-size: 10.5px; text-transform: uppercase; letter-spacing: 0.18em; color: var(--text-dim); padding: 4px 6px; }
.obj-context-menu {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 4px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.3);
  padding: 4px 0;
  min-width: 160px;
}
.obj-menu-item {
  display: block;
  width: 100%;
  text-align: left;
  padding: 6px 14px;
  font-size: 12px;
  font-family: var(--sans);
  color: var(--text);
  background: none;
  border: none;
  cursor: pointer;
}
.obj-menu-item:hover { background: var(--hover); color: var(--accent-bright); }