:root{
  --accent:#0b6fbf;
  --accent-dark:#0a4f94;
  --accent-soft:#edf5ff;
  --success-bg:#d1fae5;
  --success-border:#6ee7b7;
  --success-text:#065f46;
  --danger-bg:#fee2e2;
  --danger-border:#fca5a5;
  --danger-text:#dc2626;
  --muted:#6b7280;
  --bg:#f3f7fb;
  --card:#ffffff;
  --line:#d7e2ee;
  --line-soft:#e9f0f7;
  --text:#15233b;
}

*,*::before,*::after{box-sizing:border-box}

a{color:inherit}

a[href],button,.card-header,.src-picker-item,.chat-suggestion,.fp-db-card,.fp-supplier-card,.fp-ext-link{cursor:pointer}

/* ── ChemXplorer content wrapper ───────────────────────── */
.chemx-wrap{
  max-width:960px;
  margin:32px auto 48px;
  padding:0 24px;
}

html,body{height:100%;background:#f2f2f2 !important;}
.global-wrap{min-height:100%;display:flex;flex-direction:column;}
.chemx-wrap{flex:1;width:100%;}

/* ══════════════════════════════════════════════════════════
   SEARCH PANEL
══════════════════════════════════════════════════════════ */
.search-panel{
  background:#fff;
  border:1px solid #d0dce8;
  border-radius:20px;
  box-shadow:0 4px 24px rgba(11,50,100,0.09), 0 1px 4px rgba(11,50,100,0.05);
  overflow:visible;
  padding:28px 28px 22px;
}

/* ── Hero text inside panel ─────────────────────────────── */
.search-hero{
  margin-bottom:20px;
  text-align:center;
}
.search-hero-title{
  font-size:22px;
  font-weight:800;
  color:#0d2240;
  letter-spacing:-0.02em;
  line-height:1.25;
  margin-bottom:6px;
}
.search-hero-sub{
  font-size:14px;
  color:#5a7089;
  line-height:1.5;
}

/* ── Search input row ───────────────────────────────────── */
.search-controls{
  display:flex;
  align-items:center;
  gap:10px;
}

.search-input-wrap{
  position:relative;
  flex:1;
  display:flex;
  align-items:center;
  min-width:0;
}

.search-input-icon{
  position:absolute;
  left:16px;
  color:#8a9ab0;
  pointer-events:none;
  flex-shrink:0;
  z-index:1;
}

.search-controls input{
  width:100%;
  height:54px;
  padding:0 130px 0 46px;
  border:1.5px solid #c8d8ea;
  border-radius:14px;
  background:#fff;
  font-size:16px;
  color:#0d2240;
  transition:border-color .18s, box-shadow .18s;
  outline:none;
}
.search-controls input::placeholder{
  color:#a0aec0;
  font-size:15px;
}
.search-controls input:focus{
  border-color:#3b82f6;
  box-shadow:0 0 0 3px rgba(59,130,246,0.15);
}

.type-hint{
  position:absolute;
  right:12px;
  top:50%;
  transform:translateY(-50%);
  font-size:12px;
  padding:5px 10px;
  border-radius:999px;
  font-weight:700;
  pointer-events:none;
  white-space:nowrap;
}
.type-hint-smiles{background:#d1fae5;color:#065f46;border:1px solid #6ee7b7}
.type-hint-inchi{background:#ede9fe;color:#5b21b6;border:1px solid #c4b5fd}
.type-hint-name{background:#e0f2fe;color:#0369a1;border:1px solid #7dd3fc}

#searchBtn{
  height:54px;
  padding:0 28px;
  background:linear-gradient(135deg,#1565c0,#1e88e5);
  border:none;
  border-radius:14px;
  color:#fff;
  font-size:15px;
  font-weight:700;
  cursor:pointer;
  display:inline-flex;
  align-items:center;
  gap:8px;
  white-space:nowrap;
  box-shadow:0 4px 14px rgba(21,101,192,0.30);
  transition:transform .15s, box-shadow .15s, background .15s;
  flex-shrink:0;
}
#searchBtn:hover{
  background:linear-gradient(135deg,#1251a3,#1976d2);
  transform:translateY(-1px);
  box-shadow:0 6px 20px rgba(21,101,192,0.38);
}
#searchBtn:active{
  transform:translateY(0);
  box-shadow:0 2px 8px rgba(21,101,192,0.25);
}

/* ── Toolbar row (below search bar) ─────────────────────── */
.search-toolbar{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:10px;
  margin-top:14px;
}

/* Search type segmented control */
.search-type-seg{
  display:inline-flex;
  background:#f0f4f8;
  border:1px solid #d0dce8;
  border-radius:10px;
  padding:3px;
  gap:2px;
  flex-shrink:0;
}
.seg-btn{
  padding:6px 13px;
  border:none;
  background:transparent;
  border-radius:7px;
  font-size:13px;
  font-weight:600;
  color:#5a7089;
  cursor:pointer;
  transition:background .15s, color .15s, box-shadow .15s;
  white-space:nowrap;
}
.seg-btn:hover{
  background:#e2ecf7;
  color:#0d2240;
}
.seg-btn.active{
  background:#fff;
  color:#1565c0;
  box-shadow:0 1px 4px rgba(11,50,100,0.14);
}

/* Source picker in toolbar */
.src-picker{position:relative}
.src-picker-btn{
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:36px;
  padding:0 14px;
  background:#fff;
  border:1.5px solid #c8d8ea;
  border-radius:10px;
  font-size:13.5px;
  font-weight:600;
  color:#334155;
  cursor:pointer;
  user-select:none;
  transition:border-color .15s,box-shadow .15s;
  white-space:nowrap;
}
.src-picker-btn:hover,.src-picker-btn.open{
  border-color:#3b82f6;
  box-shadow:0 0 0 3px rgba(59,130,246,0.12);
}
.src-picker-caret{transition:transform .2s;opacity:.6}
.src-picker-btn.open .src-picker-caret{transform:rotate(180deg)}

.src-picker-dropdown{
  position:absolute;
  top:calc(100% + 8px);
  left:0;
  min-width:360px;
  max-width:min(92vw,430px);
  background:#fff;
  border:1px solid #d0dce8;
  border-radius:14px;
  box-shadow:0 16px 40px rgba(11,50,100,0.15);
  display:none;
  z-index:80;
  overflow:hidden;
}
.src-picker-dropdown.open{display:block}
.src-picker-header{
  padding:12px 16px 8px;
  font-size:11px;
  font-weight:700;
  text-transform:uppercase;
  letter-spacing:.07em;
  color:#64748b;
  background:#f8fbff;
}
.src-picker-hint{font-size:10px;font-weight:400;text-transform:none;letter-spacing:0;color:#9ca3af}
.src-picker-list{list-style:none;margin:0;padding:6px 0;max-height:340px;overflow:auto}
.src-picker-item{
  display:grid;
  grid-template-columns:18px auto 1fr;
  gap:10px;
  align-items:center;
  padding:9px 16px;
  cursor:pointer;
  transition:background .1s;
}
.src-picker-item:hover{background:#f5f9ff}
.src-picker-item.selected{background:#eef5ff}
.src-picker-item.selected:hover{background:#e4effd}
.src-item-check{width:18px;color:#1565c0;font-size:13px;font-weight:700;opacity:0;transform:scale(.8);transition:opacity .15s,transform .15s}
.src-picker-item.selected .src-item-check{opacity:1;transform:scale(1)}
.src-item-badge{display:inline-flex;align-items:center;padding:4px 9px;border-radius:999px;font-size:12px;font-weight:700;white-space:nowrap}
.src-item-desc{font-size:11.5px;color:#64748b;min-width:0}
.src-picker-item:not(.selected){opacity:.6}
.src-picker-item:not(.selected):hover{opacity:.88}
.src-picker-footer{display:flex;gap:8px;justify-content:flex-end;padding:10px 16px 12px;border-top:1px solid #edf2f7;background:#fbfdff}
.src-picker-all{border:1px solid #d0dce8;background:#fff;color:#334155;border-radius:8px;padding:6px 12px;font-size:12px;font-weight:700;cursor:pointer;transition:background .15s}
.src-picker-all:hover{background:#eef5ff;border-color:#3b82f6;color:#1565c0}

/* Toolbar hint text */
.toolbar-hint{
  color:#7a90a8;
  font-size:13px;
  margin-left:auto;
}
.toolbar-hint strong{color:#5a7089;font-weight:700}

/* ══════════════════════════════════════════════════════════
   RESULTS PANEL
══════════════════════════════════════════════════════════ */
.results-panel{margin-top:24px}

/* ── Empty state ─────────────────────────────────────────── */
.chemx-empty-state{
  background:#fff;
  border:1px solid #d0dce8;
  border-radius:20px;
  padding:52px 32px 44px;
  text-align:center;
  box-shadow:0 2px 12px rgba(11,50,100,0.06);
}
.empty-state-icon{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:80px;
  height:80px;
  background:linear-gradient(135deg,#dbeafe,#eff6ff);
  border-radius:50%;
  margin-bottom:20px;
  box-shadow:0 4px 16px rgba(59,130,246,0.18);
}
.empty-state-title{
  font-size:19px;
  font-weight:800;
  color:#0d2240;
  margin:0 0 10px;
}
.empty-state-desc{
  font-size:14px;
  color:#5a7089;
  line-height:1.6;
  max-width:480px;
  margin:0 auto 24px;
}
.empty-state-examples{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:center;
  gap:8px;
  margin-bottom:28px;
}
.empty-example-label{
  font-size:13px;
  color:#8a9ab0;
  font-weight:600;
  flex-basis:100%;
  margin-bottom:4px;
}
.empty-chip{
  padding:8px 16px;
  background:#eef5ff;
  border:1.5px solid #bdd3f0;
  border-radius:999px;
  font-size:13px;
  font-weight:600;
  color:#1565c0;
  cursor:pointer;
  transition:background .15s, border-color .15s, transform .1s, box-shadow .15s;
}
.empty-chip:hover{
  background:#dbeafe;
  border-color:#3b82f6;
  transform:translateY(-1px);
  box-shadow:0 4px 10px rgba(59,130,246,0.18);
}
.empty-state-sources{
  display:flex;
  flex-wrap:wrap;
  justify-content:center;
  gap:6px;
  padding-top:20px;
  border-top:1px solid #e8f0f7;
}
.empty-src-badge{
  display:inline-flex;
  align-items:center;
  padding:4px 10px;
  border-radius:999px;
  font-size:12px;
  font-weight:700;
  background:#f1f5f9;
  color:#475569;
}

/* ── Results card styles ─────────────────────────────────── */
.search-progress{
  background:#fff;
  border:1px solid #d0dce8;
  border-radius:16px;
  padding:16px 20px;
  margin-bottom:12px;
  box-shadow:0 2px 12px rgba(11,50,100,0.06);
}
.search-progress-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:10px}
.search-progress-title{display:flex;align-items:center;gap:10px;font-size:15px;font-weight:700;color:#1f3250}
.search-progress-flask{width:28px;height:28px;display:inline-flex;align-items:center;justify-content:center;flex-shrink:0}
.search-progress-flask svg{width:100%;height:100%;overflow:visible}
.flask-outline{fill:rgba(255,255,255,0.7);stroke:#1565c0;stroke-width:2.2;stroke-linejoin:round}
.flask-liquid{fill:#4fd1a5;opacity:.95;transform-origin:24px 36px;animation:flask-slosh 1.8s ease-in-out infinite}
.flask-bubble{fill:#e8fff7;opacity:.9}
.bubble-one{animation:flask-bubble-rise 1.6s ease-in-out infinite}
.bubble-two{animation:flask-bubble-rise 1.9s ease-in-out infinite .25s}
.bubble-three{animation:flask-bubble-rise 1.4s ease-in-out infinite .15s}
.search-progress-count{font-size:13px;font-weight:700;color:#607089;white-space:nowrap}
.search-progress-bar{height:8px;background:#e6eef7;border-radius:999px;overflow:hidden}
.search-progress-bar-fill{width:0;height:100%;background:linear-gradient(90deg,#1565c0,#1dbf87);border-radius:999px;transition:width .25s ease}
.search-progress-status{margin-top:8px;font-size:13px;color:#607089}
.search-progress.is-complete .search-progress-status{color:#0b7a57;font-weight:600}
.search-progress.is-complete .search-progress-title{color:#0b7a57}
.search-progress.is-complete .flask-liquid{animation:none}
.search-progress.is-complete .flask-bubble{animation:none;opacity:.55}

@keyframes flask-slosh{0%,100%{transform:translateY(0) rotate(0deg)}25%{transform:translateY(.2px) rotate(-2deg)}50%{transform:translateY(-.4px) rotate(1.5deg)}75%{transform:translateY(.2px) rotate(2deg)}}
@keyframes flask-bubble-rise{0%{transform:translateY(0);opacity:.15}25%{opacity:.85}100%{transform:translateY(-6px);opacity:0}}

.card{
  background:var(--card);
  padding:0;
  border:1px solid #d0dce8;
  border-radius:16px;
  margin-bottom:10px;
  box-shadow:0 2px 12px rgba(11,50,100,0.06);
  overflow:hidden;
  transition:box-shadow .15s;
}
.card:hover{box-shadow:0 4px 20px rgba(11,50,100,0.10)}

.card-header{
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:12px;
  min-height:68px;
  padding:16px 20px;
  background:#fff;
  cursor:pointer;
  transition:background .15s;
}
.card:not(.collapsed) .card-header{border-radius:16px 16px 0 0;border-bottom:1px solid #e8f0f7}
.card-header:hover{background:#f8faff}
.card-header-main{display:flex;align-items:center;gap:12px;flex-wrap:wrap;min-width:0}
.card-header-title{margin:0}

.source-badge{
  display:inline-block;
  padding:8px 14px;
  border-radius:999px;
  background:var(--accent-soft);
  color:#1565c0;
  font-size:15px;
  font-weight:700;
}

.card-status{
  font-size:13px;
  font-weight:700;
  padding:7px 13px;
  border-radius:999px;
  white-space:nowrap;
  line-height:1.4;
}
.card-status-loading{background:#f1f5f9;color:#6b7280;border:1px solid #e2e8f0}
.card-status-ok{background:var(--success-bg);color:var(--success-text);border:1px solid var(--success-border)}
.card-status-empty{background:#f1f5f9;color:#9ca3af;border:1px solid #e2e8f0}
.card-status-error{background:var(--danger-bg);color:var(--danger-text);border:1px solid var(--danger-border)}

.card-toggle-icon{
  width:32px;height:32px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;
  background:#f0f4f8;color:#94a3b8;font-size:11px;
  transform:rotate(-90deg);transition:transform .2s;flex-shrink:0;
}
.card:not(.collapsed) .card-toggle-icon{transform:rotate(0deg)}
.card.collapsed .card-content{display:none}
.card-content{padding:16px 20px 20px}

.result-grid{display:grid;grid-template-columns:1fr 300px;gap:12px}
.result-left{min-height:80px}
.result-right{background:#fbfdff;padding:10px;border-radius:8px}

.hint{color:var(--muted);font-size:14px}

/* ── Chat button/panel ───────────────────────────────────── */
.chat-toggle-btn,.chat-panel,#chatOverlay{display:none !important}

/* ── Source badge colors ─────────────────────────────────── */
.src-badge-pubchem{background:#e0f2fe;color:#0369a1}
.src-badge-chembl{background:#ecfdf5;color:#065f46}
.src-badge-europepmc{background:#fef3c7;color:#92400e}
.src-badge-bindingdb{background:#ede9fe;color:#5b21b6}
.src-badge-rcsb{background:#dbeafe;color:#1d4ed8}
.src-badge-drugbank{background:#fff7ed;color:#9a3412}
.src-badge-toxnet{background:#fee2e2;color:#b91c1c}
.src-badge-tox21{background:#dcfce7;color:#166534}
.src-badge-chemrxiv{background:#fae8ff;color:#a21caf}
.src-badge-semanticscholar{background:#e0e7ff;color:#3730a3}
.src-badge-materialsproject{background:#ecfeff;color:#0f766e}
.src-badge-aflow{background:#f1f5f9;color:#334155}

/* ── Full profile card ───────────────────────────────────── */
.fp-card{background:#fff;border-radius:14px;box-shadow:0 4px 20px rgba(7,43,79,0.08);overflow:hidden;margin-bottom:16px}
.fp-header{background:linear-gradient(100deg,#0d2240 0%,#1251a3 60%,#1976d2 100%);padding:18px 22px;color:#fff}
.fp-title-row{display:flex;align-items:center;flex-wrap:wrap;gap:8px;margin-bottom:6px}
.fp-title{font-size:17px;font-weight:700;line-height:1.3;flex:1;min-width:0;word-break:break-word}
.fp-cas-badge,.fp-formula-badge{background:rgba(255,255,255,0.2);border:1px solid rgba(255,255,255,0.35);border-radius:6px;padding:3px 9px;font-size:12px;font-weight:600;white-space:nowrap}
.fp-formula-badge{font-family:monospace}
.fp-wiki-strip{margin-top:8px;font-size:12.5px;opacity:0.9;line-height:1.5}
.fp-wiki-strip a{color:#7dd3fc}
.fp-section{border-bottom:1px solid #eef2f7;padding:14px 22px}
.fp-section:last-child{border-bottom:none}
.fp-section-title{font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:#1565c0;margin-bottom:10px;display:flex;align-items:center;gap:5px}
.fp-table{width:100%;border-collapse:collapse;font-size:13px !important}
.fp-td-label{padding:5px 10px 5px 0 !important;width:170px;color:#6b7280 !important;vertical-align:top;white-space:nowrap;font-size:13px !important;font-weight:600 !important;font-family:inherit !important}
.fp-td-val{padding:5px 0 !important;color:#111 !important;word-break:break-word;font-size:13px !important;font-weight:400 !important;font-family:inherit !important}
.fp-td-mono{font-size:11.5px}
.fp-code{background:#e8f0fb;padding:1px 6px;border-radius:4px;font-size:11.5px;font-family:monospace;word-break:break-all}
.fp-code-wrap{background:#f1f5f9;padding:2px 6px;border-radius:4px;font-size:11.5px;font-family:monospace;display:inline-block;max-width:100%;word-break:break-all;white-space:pre-wrap}
.fp-lipinski{font-size:12px;padding:6px 10px;border-radius:7px;margin-bottom:10px;display:inline-block}
.fp-lip-pass{background:#d1fae5;color:#065f46;border:1px solid #6ee7b7}
.fp-lip-fail{background:#fef3c7;color:#92400e;border:1px solid #fbbf24}
.fp-db-grid,.fp-supplier-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:8px}
.fp-supplier-grid{grid-template-columns:repeat(auto-fill,minmax(170px,1fr));gap:7px}
.fp-db-card,.fp-supplier-card{display:flex;align-items:center;gap:7px;padding:8px 11px;border:1px solid #e2e8f0;border-radius:8px;text-decoration:none;background:#fafcff;transition:border-color .15s,background .15s}
.fp-db-card{color:#111;font-size:12.5px;font-weight:500}
.fp-supplier-card{justify-content:space-between;color:#1565c0;font-size:12.5px;font-weight:500;background:#f8fafd}
.fp-db-card:hover,.fp-supplier-card:hover{border-color:#1565c0;background:#eef5ff}
.fp-db-name{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.fp-synonyms{display:flex;flex-wrap:wrap;gap:5px}
.fp-syn-tag{background:#f1f5f9;border:1px solid #e2e8f0;border-radius:20px;padding:3px 10px;font-size:11.5px;color:#374151}
.fp-notfound{padding:14px;color:#6b7280;font-size:14px}
.fp-spinner{width:20px;height:20px;border:2px solid #d1e7f7;border-top-color:#1565c0;border-radius:50%;animation:fp-spin .7s linear infinite;flex-shrink:0}
@keyframes fp-spin{to{transform:rotate(360deg)}}
.fp-loading{padding:16px 18px}

.bdb-card{background:#fff;border:1px solid #e8f0f7;border-radius:8px;padding:10px 12px;margin-bottom:8px}
.bdb-card-header{display:flex;align-items:flex-start;justify-content:space-between;gap:8px;flex-wrap:wrap;margin-bottom:4px}
.bdb-card-header strong{font-size:13.5px;color:#111;flex:1;min-width:0}
.bdb-badges{display:flex;flex-wrap:wrap;gap:4px;flex-shrink:0}
.bdb-badge{font-size:10.5px;font-weight:700;padding:2px 7px;border-radius:12px;white-space:nowrap}
.bdb-ki{background:#dbeafe;color:#1e40af}
.bdb-kd{background:#d1fae5;color:#065f46}
.bdb-ic50{background:#fef3c7;color:#92400e}
.bdb-ec50{background:#ede9fe;color:#5b21b6}
.bdb-target{font-size:12px;color:#374151;margin:4px 0 2px}
.bdb-organism{color:#6b7280;font-size:11px}
.bdb-props{display:flex;flex-wrap:wrap;gap:4px;margin:5px 0}
.bdb-prop{font-size:11px;background:#f1f5f9;border:1px solid #e2e8f0;border-radius:4px;padding:1px 6px;color:#374151}
.bdb-smiles{font-size:11px;color:#6b7280;margin:4px 0;word-break:break-all}
.bdb-smiles code{background:#f8fafc;padding:2px 5px;border-radius:3px}
.bdb-links{margin-top:6px;font-size:11px;display:flex;flex-wrap:wrap;gap:8px}

/* ── Responsive ─────────────────────────────────────────── */
@media (max-width:860px){
  .chemx-wrap{padding:0 16px;margin:20px auto 32px}
  .search-panel{padding:20px 18px 16px}
  .search-hero-title{font-size:18px}
  .search-controls{flex-direction:column;gap:10px}
  .search-controls input{height:50px;font-size:15px}
  #searchBtn{width:100%;height:50px;justify-content:center}
  .search-toolbar{gap:8px}
  .toolbar-hint{display:none}
  .result-grid{grid-template-columns:1fr}
  .src-picker-dropdown{min-width:min(92vw,370px)}
}

@media (max-width:600px){
  .search-hero{display:none}
  .search-type-seg{overflow-x:auto;max-width:100%}
  .seg-btn{padding:5px 10px;font-size:12px}
  .empty-state-title{font-size:17px}
  .empty-chip{font-size:12px;padding:6px 12px}
  .chemx-empty-state{padding:36px 20px 32px}
}

@media (max-width:480px){
  .empty-state-sources{display:none}
}

/* ── Structure Search Toggle Button ── */
.struct-toggle-btn{
  display:inline-flex;align-items:center;gap:6px;
  padding:7px 12px;
  background:#fff;border:1px solid #d1dce8;border-radius:8px;
  font-size:12.5px;font-weight:600;color:#374151;
  cursor:pointer;user-select:none;
  transition:border-color .15s,box-shadow .15s,background .15s;
  white-space:nowrap;flex-shrink:0;
}
.struct-toggle-btn:hover{border-color:#0b6fbf;box-shadow:0 0 0 3px #0b6fbf18;background:#f7fbff}
.struct-toggle-btn.active{background:#eef6ff;border-color:#0b6fbf;color:#0b6fbf;box-shadow:0 0 0 3px #0b6fbf18}

/* ── Structure Search Panel ── */
.struct-panel{
  background:#fff;
  border-radius:12px;
  box-shadow:0 6px 18px rgba(12,22,39,0.07);
  margin:14px auto 0;
  max-width:900px;
  overflow:hidden;
  max-height:0;
  opacity:0;
  pointer-events:none;
  transition:max-height .35s cubic-bezier(.4,0,.2,1),opacity .25s ease,margin .25s ease;
}
.struct-panel.open{max-height:600px;opacity:1;pointer-events:all}
.struct-panel-inner{padding:16px 18px}
.struct-panel-header{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  margin-bottom:14px;padding-bottom:11px;
  border-bottom:1px solid #eef2f7;
}
.struct-panel-title{display:flex;align-items:center;gap:6px;font-size:13.5px;font-weight:700;color:#072b4f}
.struct-panel-hint{font-size:12px;color:#6b7280;flex:1}
.struct-close-btn{
  margin-left:auto;background:none;border:1px solid #e2e8f0;border-radius:6px;
  width:26px;height:26px;cursor:pointer;font-size:13px;color:#6b7280;
  display:flex;align-items:center;justify-content:center;
  transition:background .12s,color .12s;flex-shrink:0;
}
.struct-close-btn:hover{background:#fee2e2;color:#dc2626;border-color:#fca5a5}
.struct-editor-row{display:flex;gap:18px;align-items:flex-start;flex-wrap:wrap}
.struct-jsme-wrap{
  flex:0 0 auto;width:540px;max-width:100%;height:340px;
  border:1px solid #e2e8f0;border-radius:8px;overflow:hidden;background:#fafafa;
}
.struct-controls{flex:1;min-width:200px;display:flex;flex-direction:column;gap:12px}
.struct-label{font-size:11.5px;font-weight:600;color:#374151;display:block;margin-bottom:5px}
.struct-smiles-ta{
  width:100%;font-family:monospace;font-size:11.5px;
  border:1px solid #e2e8f0;border-radius:7px;padding:8px 10px;
  resize:vertical;background:#f8fafc;color:#111;outline:none;
  transition:border-color .15s;
}
.struct-smiles-ta:focus{border-color:#0b6fbf}
.struct-action-row{display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.struct-search-btn{
  display:inline-flex;align-items:center;gap:6px;
  background:linear-gradient(90deg,#072b4f,#0b6fbf);
  border:none;color:#fff;padding:10px 16px;border-radius:8px;
  font-size:13px;font-weight:600;cursor:pointer;transition:opacity .15s;
}
.struct-search-btn:hover{opacity:.88}
.struct-search-btn:disabled{opacity:.45;cursor:not-allowed}
.struct-clear-btn{
  background:#fff;border:1px solid #d1dce8;color:#374151;
  padding:9px 13px;border-radius:8px;font-size:13px;cursor:pointer;
  transition:border-color .15s,background .15s;
}
.struct-clear-btn:hover{border-color:#dc2626;color:#dc2626;background:#fff5f5}
.struct-tip{font-size:11.5px;color:#9ca3af;line-height:1.5;margin:0}
@media(max-width:700px){
  .struct-jsme-wrap{width:100%;height:280px}
  .struct-editor-row{flex-direction:column}
}

/* ── Draw Structure helper row ── */
.struct-helper-row{
  display:flex;align-items:center;gap:12px;flex-wrap:wrap;
  margin-top:2px;
}
.struct-how-it-works{
  display:flex;align-items:center;gap:7px;flex-wrap:wrap;
  font-size:11.5px;color:#6b7280;
}
.struct-how-step{
  display:inline-flex;align-items:center;gap:5px;
  white-space:nowrap;
}
.struct-how-num{
  display:inline-flex;align-items:center;justify-content:center;
  width:17px;height:17px;border-radius:50%;
  background:#e0f2fe;color:#0369a1;
  font-size:10px;font-weight:700;flex-shrink:0;
}
.struct-how-arrow{
  color:#cbd5e1;flex-shrink:0;
}
@media(max-width:700px){
  .struct-how-it-works{display:none}
}