:root{
  --accent:#38bdf8; --accent2:#a78bfa; --bg:#02040a; --panel:rgba(10,14,24,.82); --text:#dbe4ee; --muted:#8b9bb4;
}
*{box-sizing:border-box}
html,body{margin:0;height:100%;background:var(--bg);overflow:hidden;font-family:system-ui,-apple-system,'Segoe UI',sans-serif}
#scene{position:fixed;inset:0;display:block;touch-action:none}

#hud{position:fixed;top:0;left:0;width:100%;display:flex;flex-direction:column;align-items:center;
  padding-top:26px;z-index:10;pointer-events:none}
#brand{color:#fff;font-size:13px;letter-spacing:.32em;font-weight:600;opacity:.85;text-shadow:0 0 20px var(--accent)}
#searchbar{margin-top:18px;pointer-events:auto;width:min(560px,88vw);position:relative}
#searchInput{
  width:100%;padding:14px 20px;border-radius:999px;border:1px solid rgba(56,189,248,.35);
  background:rgba(5,8,16,.65);backdrop-filter:blur(10px);color:#fff;font-size:15px;outline:none;
  box-shadow:0 0 30px rgba(56,189,248,.08),inset 0 0 20px rgba(56,189,248,.04);transition:box-shadow .3s,border-color .3s;
}
#searchInput:focus{border-color:var(--accent);box-shadow:0 0 40px rgba(56,189,248,.35),inset 0 0 20px rgba(56,189,248,.08)}
#searchInput::placeholder{color:var(--muted)}
#searchStatus{position:absolute;top:100%;left:0;width:100%;text-align:center;margin-top:8px;
  font-size:12px;color:var(--accent);letter-spacing:.05em;opacity:0;transition:opacity .3s}
#searchStatus.show{opacity:.85}

#infoPanel{
  position:fixed;right:26px;top:50%;transform:translateY(-50%);width:min(340px,86vw);
  background:var(--panel);border:1px solid rgba(167,139,250,.3);border-radius:16px;padding:22px 22px 26px;
  color:var(--text);backdrop-filter:blur(14px);box-shadow:0 20px 60px rgba(0,0,0,.6),0 0 40px rgba(167,139,250,.08);
  z-index:20;transition:opacity .35s,transform .35s;
}
#infoPanel.hidden{opacity:0;pointer-events:none;transform:translateY(-50%) translateX(20px)}
#closeInfo{position:absolute;top:12px;right:14px;background:none;border:none;color:var(--muted);
  font-size:20px;cursor:pointer;line-height:1}
#closeInfo:hover{color:#fff}
#infoCategory{font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--accent2);margin-bottom:10px}
#infoText{font-size:16px;line-height:1.6;color:#fff}
#infoRelated{margin-top:16px;font-size:12px;color:var(--muted)}

#loadOverlay{
  position:fixed;inset:0;background:#02040a;z-index:100;display:flex;flex-direction:column;
  align-items:center;justify-content:center;transition:opacity .8s ease;
}
#loadOverlay.done{opacity:0;pointer-events:none}
#loadTitle{color:#fff;font-size:20px;letter-spacing:.35em;font-weight:600;margin-bottom:26px;
  text-shadow:0 0 30px var(--accent)}
#loadBar{width:240px;height:2px;background:rgba(255,255,255,.1);border-radius:2px;overflow:hidden}
#loadFill{height:100%;width:0%;background:linear-gradient(90deg,var(--accent),var(--accent2));
  transition:width .3s ease}
#loadLabel{margin-top:14px;color:var(--muted);font-size:12px;letter-spacing:.08em}

@media (max-width:640px){
  #infoPanel{right:12px;left:12px;width:auto;top:auto;bottom:16px;transform:none}
  #infoPanel.hidden{transform:translateY(20px)}
}

.label-layer {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 3;
}

.sys-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  padding: 4px 10px;
  border: 1px solid transparent;
  border-radius: 999px;
  background: rgba(4, 8, 16, 0.55);
  backdrop-filter: blur(3px);
  white-space: nowrap;
  text-shadow: 0 0 12px currentColor;
  opacity: 0.9;
}

#chatToggle {
  pointer-events: auto;
  margin: 14px auto 0;
  display: block;
  background: rgba(56, 189, 248, 0.08);
  border: 1px solid rgba(56, 189, 248, 0.35);
  color: #7dd3fc;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.05em;
  padding: 8px 18px;
  border-radius: 999px;
  cursor: pointer;
  transition: background 0.2s, transform 0.2s;
}
#chatToggle:hover { background: rgba(56, 189, 248, 0.18); transform: translateY(-1px); }

#chatPanel {
  position: fixed;
  right: 26px;
  bottom: 26px;
  width: 380px;
  max-height: 60vh;
  display: flex;
  flex-direction: column;
  background: rgba(6, 10, 18, 0.92);
  border: 1px solid rgba(56, 189, 248, 0.25);
  border-radius: 16px;
  backdrop-filter: blur(10px);
  box-shadow: 0 20px 60px rgba(0,0,0,0.5);
  z-index: 30;
  overflow: hidden;
  transition: opacity 0.25s, transform 0.25s;
}
#chatPanel.hidden { opacity: 0; transform: translateY(12px) scale(0.98); pointer-events: none; }

#chatHeader {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 16px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #7dd3fc;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
#chatHeader button {
  background: none; border: none; color: #7dd3fc; font-size: 20px; cursor: pointer; line-height: 1;
}

#chatMessages {
  flex: 1;
  overflow-y: auto;
  padding: 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 13.5px;
  line-height: 1.5;
}
.chat-msg { max-width: 88%; padding: 8px 12px; border-radius: 12px; white-space: pre-wrap; }
.chat-msg.user { align-self: flex-end; background: rgba(56, 189, 248, 0.16); color: #e6f6ff; }
.chat-msg.ai { align-self: flex-start; background: rgba(255,255,255,0.06); color: #cbd5e1; }
.chat-msg.system { align-self: center; color: #64748b; font-size: 12px; text-align: center; }

#chatStatus {
  padding: 0 16px;
  font-size: 11px;
  color: #64748b;
  min-height: 16px;
}

#chatForm { display: flex; border-top: 1px solid rgba(255,255,255,0.06); }
#chatInput {
  flex: 1;
  background: none;
  border: none;
  color: #e6f6ff;
  padding: 12px 14px;
  font-size: 13.5px;
  outline: none;
}
#chatInput::placeholder { color: #475569; }
#chatSend {
  background: none;
  border: none;
  color: #7dd3fc;
  padding: 0 16px;
  font-weight: 600;
  cursor: pointer;
}
#chatSend:disabled, #chatInput:disabled { opacity: 0.4; cursor: not-allowed; }