/* ========== 全局 ========== */
* { box-sizing: border-box; margin: 0; padding: 0; }
:root {
  --bg: #0d111c;
  --panel: #151b2b;
  --panel-2: #1b2336;
  --border: #2a3450;
  --text: #e6ebf5;
  --dim: #8d99b5;
  --accent: #4f8ef7;
  --gold: #ffd24e;
}
html, body { height: 100%; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

/* ========== 顶栏 ========== */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 20px;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
.logo { font-size: 18px; font-weight: 700; }
.stats-bar { display: flex; gap: 16px; font-size: 13px; color: var(--dim); }
.stats-bar .stat b { color: var(--gold); font-size: 15px; margin-right: 2px; }

/* ========== 布局 ========== */
.layout {
  flex: 1;
  display: flex;
  min-height: 0;
}
.chat-panel {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
  border-right: 1px solid var(--border);
}
.reasoning-panel {
  width: 46%;
  max-width: 720px;
  min-width: 380px;
  display: flex;
  flex-direction: column;
  background: var(--panel);
}

/* ========== 聊天 ========== */
.messages {
  flex: 1;
  overflow-y: auto;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.msg { display: flex; }
.msg.user { justify-content: flex-end; }
.bubble {
  max-width: 86%;
  padding: 12px 16px;
  border-radius: 14px;
  font-size: 14px;
  line-height: 1.7;
  word-break: break-word;
}
.msg.user .bubble {
  background: var(--accent);
  color: #fff;
  border-bottom-right-radius: 4px;
}
.msg.bot .bubble {
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-bottom-left-radius: 4px;
}
.thinking { color: var(--dim); }
.thinking::after {
  content: "";
  animation: dots 1.2s infinite steps(4);
}
@keyframes dots { 0% { content: ""; } 25% { content: "."; } 50% { content: ".."; } 75% { content: "..."; } }
.path-box {
  background: rgba(255, 210, 78, 0.08);
  border: 1px solid rgba(255, 210, 78, 0.35);
  border-radius: 8px;
  padding: 8px 10px;
  margin: 6px 0;
  font-size: 13px;
  color: var(--gold);
}
.path-box.alt {
  border-color: var(--border);
  color: var(--dim);
  background: rgba(255, 255, 255, 0.03);
}

/* ========== 示例与输入 ========== */
.examples {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 0 20px 10px;
  flex-shrink: 0;
}
.example {
  font-size: 12px;
  color: var(--dim);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 5px 12px;
  cursor: pointer;
  transition: all .15s;
}
.example:hover { color: var(--gold); border-color: var(--gold); }
.input-bar {
  display: flex;
  gap: 10px;
  padding: 14px 20px 18px;
  border-top: 1px solid var(--border);
  flex-shrink: 0;
}
#user-input {
  flex: 1;
  resize: none;
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text);
  padding: 11px 14px;
  font-size: 14px;
  font-family: inherit;
  outline: none;
}
#user-input:focus { border-color: var(--accent); }
#send-btn {
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 10px;
  padding: 0 24px;
  font-size: 14px;
  cursor: pointer;
  transition: filter .15s;
}
#send-btn:hover { filter: brightness(1.15); }

/* ========== 推理面板 ========== */
.tabs {
  display: flex;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
.tab-btn {
  flex: 1;
  background: none;
  border: none;
  color: var(--dim);
  font-size: 14px;
  padding: 13px 0;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  font-family: inherit;
}
.tab-btn.active { color: var(--gold); border-bottom-color: var(--gold); }
.tab-content { flex: 1; min-height: 0; position: relative; }
.tab-pane {
  display: none;
  position: absolute;
  inset: 0;
  overflow-y: auto;
  padding: 16px;
}
.tab-pane.active { display: block; }
.steps-empty { color: var(--dim); font-size: 13px; padding: 20px 8px; line-height: 1.8; }

/* 推理步骤 */
.step {
  display: flex;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px dashed var(--border);
  animation: fadeIn .3s ease;
}
@keyframes fadeIn { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; } }
.step-num {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: rgba(255, 210, 78, 0.15);
  border: 1px solid var(--gold);
  color: var(--gold);
  font-size: 13px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.step-title { font-size: 14px; font-weight: 600; color: var(--gold); margin-bottom: 4px; }
.step-detail { font-size: 13px; color: var(--text); line-height: 1.7; }

/* 图谱画布 */
#graph-canvas {
  width: 100%;
  border-radius: 10px;
  border: 1px solid var(--border);
  cursor: grab;
  display: block;
}
.graph-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 10px;
  font-size: 12px;
  color: var(--dim);
}
.graph-legend i {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  margin-right: 5px;
}

/* 语义分析 */
.sem-section { margin-bottom: 18px; }
.sem-section h4 { font-size: 13px; color: var(--dim); margin-bottom: 8px; font-weight: 600; }
.token-list { display: flex; flex-wrap: wrap; gap: 6px; }
.token {
  font-size: 12px;
  padding: 4px 10px;
  border-radius: 6px;
  background: var(--panel-2);
  border: 1px solid var(--border);
  color: var(--dim);
}
.token.hit { color: var(--gold); border-color: rgba(255, 210, 78, 0.5); background: rgba(255, 210, 78, 0.08); }
.token.syn { color: #7be3a8; border-color: rgba(123, 227, 168, 0.5); background: rgba(123, 227, 168, 0.08); }
.intent-badge {
  display: inline-block;
  background: rgba(79, 142, 247, 0.15);
  border: 1px solid var(--accent);
  color: var(--accent);
  font-size: 13px;
  padding: 4px 14px;
  border-radius: 20px;
}
.sem-line { font-size: 13px; line-height: 1.8; margin-top: 8px; }
.dim { color: var(--dim); font-size: 12px; }

/* 滚动条 */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }

/* 响应式 */
@media (max-width: 900px) {
  .layout { flex-direction: column; overflow-y: auto; }
  .reasoning-panel { width: 100%; max-width: none; min-width: 0; height: 600px; flex-shrink: 0; }
  .chat-panel { min-height: 70vh; border-right: none; border-bottom: 1px solid var(--border); }
  body { overflow: auto; }
}


/* ========== 精细版知识库浏览器 ========== */
.logo-sub {
  margin-left: 8px;
  padding: 2px 8px;
  border-radius: 999px;
  background: rgba(255, 210, 78, 0.12);
  border: 1px solid rgba(255, 210, 78, 0.35);
  color: var(--gold);
  font-size: 12px;
  vertical-align: middle;
}
.catalog-browser { min-height: 100%; }
.catalog-head {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  align-items: flex-start;
  margin-bottom: 14px;
}
.catalog-head h3 { font-size: 17px; margin-bottom: 6px; }
.catalog-head p { color: var(--dim); font-size: 12px; line-height: 1.7; }
.release-badge {
  flex-shrink: 0;
  color: var(--gold);
  border: 1px solid rgba(255, 210, 78, .35);
  background: rgba(255, 210, 78, .08);
  border-radius: 999px;
  padding: 5px 10px;
  font-size: 12px;
}
.catalog-overview {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
  margin-bottom: 12px;
}
.catalog-card {
  text-align: left;
  border: 1px solid var(--border);
  background: linear-gradient(180deg, rgba(255,255,255,.04), rgba(255,255,255,.02));
  color: var(--text);
  border-radius: 12px;
  padding: 10px;
  cursor: pointer;
  font-family: inherit;
  transition: transform .15s, border-color .15s, background .15s;
}
.catalog-card:hover { transform: translateY(-1px); border-color: rgba(255,210,78,.55); background: rgba(255,210,78,.06); }
.catalog-card .card-title { display: block; color: var(--dim); font-size: 12px; margin-bottom: 5px; }
.catalog-card b { display: inline-block; color: var(--gold); font-size: 19px; margin-right: 4px; }
.catalog-card span { font-size: 12px; }
.catalog-card small { display: block; color: var(--dim); margin-top: 5px; line-height: 1.5; }
.catalog-toolbar {
  display: grid;
  grid-template-columns: minmax(180px, 1.5fr) minmax(95px, .6fr) minmax(120px, .8fr) minmax(80px, .5fr);
  gap: 8px;
  margin-bottom: 12px;
}
.catalog-toolbar input,
.catalog-toolbar select {
  min-width: 0;
  background: var(--panel-2);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 10px;
  padding: 9px 10px;
  font-family: inherit;
  font-size: 12px;
  outline: none;
}
.catalog-toolbar input:focus,
.catalog-toolbar select:focus { border-color: var(--accent); }
.catalog-main {
  display: grid;
  grid-template-columns: minmax(190px, 42%) minmax(240px, 1fr);
  gap: 12px;
  min-height: 420px;
}
.catalog-results,
.catalog-detail {
  border: 1px solid var(--border);
  border-radius: 12px;
  background: rgba(255,255,255,.025);
  min-height: 420px;
  max-height: calc(100vh - 255px);
  overflow: auto;
}
.result-count {
  position: sticky;
  top: 0;
  z-index: 1;
  padding: 9px 10px;
  border-bottom: 1px solid var(--border);
  background: rgba(21, 27, 43, .96);
  color: var(--dim);
  font-size: 12px;
}
.result-item {
  display: block;
  width: 100%;
  text-align: left;
  border: 0;
  border-bottom: 1px solid rgba(42, 52, 80, .75);
  background: transparent;
  color: var(--text);
  padding: 10px;
  cursor: pointer;
  font-family: inherit;
}
.result-item:hover,
.result-item.selected { background: rgba(79, 142, 247, .10); }
.result-item.selected { border-left: 3px solid var(--gold); padding-left: 7px; }
.result-name { display: block; font-size: 13px; font-weight: 700; line-height: 1.45; }
.result-meta { display: block; color: var(--dim); font-size: 11px; margin-top: 3px; line-height: 1.45; }
.mini-tags { display: flex; flex-wrap: wrap; gap: 4px; margin-top: 6px; }
.mini-tags i,
.detail-tags i {
  font-style: normal;
  color: #9fc4ff;
  border: 1px solid rgba(79, 142, 247, .35);
  border-radius: 999px;
  padding: 2px 7px;
  font-size: 11px;
  background: rgba(79, 142, 247, .08);
}
.catalog-detail { padding: 14px; }
.detail-type { color: var(--gold); font-size: 12px; margin-bottom: 6px; }
.catalog-detail h3 { font-size: 18px; line-height: 1.45; margin-bottom: 8px; }
.detail-desc { color: var(--text); font-size: 13px; line-height: 1.75; margin-bottom: 12px; }
.detail-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  margin-bottom: 12px;
}
.detail-grid span {
  border: 1px solid var(--border);
  border-radius: 9px;
  padding: 8px;
  color: var(--text);
  font-size: 12px;
  line-height: 1.55;
  word-break: break-word;
}
.detail-grid b { display: block; color: var(--dim); font-size: 11px; margin-bottom: 2px; }
.detail-tags { display: flex; flex-wrap: wrap; gap: 5px; margin-bottom: 12px; }
.detail-actions { display: flex; gap: 8px; margin: 12px 0; }
.detail-actions button {
  flex: 1;
  border: 1px solid rgba(255,210,78,.38);
  border-radius: 9px;
  background: rgba(255,210,78,.08);
  color: var(--gold);
  padding: 8px;
  cursor: pointer;
  font-family: inherit;
}
.catalog-detail h4 { color: var(--dim); font-size: 12px; margin: 14px 0 8px; }
.neighbor-list { display: flex; flex-direction: column; gap: 6px; }
.neighbor {
  text-align: left;
  border: 1px solid var(--border);
  background: rgba(255,255,255,.025);
  border-radius: 8px;
  color: var(--text);
  padding: 7px 8px;
  cursor: pointer;
  font-family: inherit;
}
.neighbor:hover { border-color: var(--accent); }
.neighbor b { display: inline-block; color: #7be3a8; font-size: 11px; margin-right: 6px; }
.neighbor span { font-size: 12px; }

@media (max-width: 1100px) {
  .catalog-overview { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .catalog-toolbar { grid-template-columns: 1fr 1fr; }
  .catalog-main { grid-template-columns: 1fr; }
  .catalog-results, .catalog-detail { max-height: none; min-height: 280px; }
}