/* ===== Duplex Trace 暗色主题 ===== */
:root {
  --bg: #0b0f17;
  --bg2: #101624;
  --panel: #141c2e;
  --panel2: #1a2338;
  --border: #263352;
  --txt: #e6ecf7;
  --txt2: #8fa0bf;
  --txt3: #5d6c8a;
  --accent: #4f8cff;
  --c-user: #4fc3f7;
  --c-vad: #ffb74d;
  --c-asr: #81c784;
  --c-llm: #ba68c8;
  --c-tts: #f06292;
  --c-bot: #7986cb;
  --c-ctrl: #ef5350;
  --radius: 12px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { background: var(--bg); color: var(--txt); font-family: -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif; }
body { min-height: 100vh; padding: 16px 20px 32px; }

/* ---- 顶栏 ---- */
.topbar { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; margin-bottom: 14px; }
.brand { display: flex; align-items: center; gap: 12px; }
.logo { font-size: 30px; }
.brand h1 { font-size: 20px; letter-spacing: .5px; }
.brand .sub { font-size: 13px; color: var(--txt2); font-weight: 400; margin-left: 6px; }
.session-meta { font-size: 12px; color: var(--txt3); margin-top: 2px; }
.toolbar { display: flex; gap: 8px; flex-wrap: wrap; }
.btn {
  background: var(--panel2); color: var(--txt); border: 1px solid var(--border);
  padding: 7px 13px; border-radius: 8px; font-size: 13px; cursor: pointer;
  transition: all .15s; display: inline-flex; align-items: center; gap: 4px;
}
.btn:hover { border-color: var(--accent); background: #1f2a45; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.primary:hover { background: #3a7bf0; }
.file-btn { position: relative; }

/* ---- 指标卡片 ---- */
.metrics { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 10px; margin-bottom: 14px; }
.metric-card {
  background: linear-gradient(160deg, var(--panel), var(--bg2));
  border: 1px solid var(--border); border-radius: var(--radius); padding: 12px 14px;
  position: relative; overflow: hidden;
}
.metric-card::before { content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 3px; background: var(--mc, var(--accent)); }
.metric-card .m-label { font-size: 12px; color: var(--txt2); display: flex; align-items: center; gap: 5px; }
.metric-card .m-value { font-size: 24px; font-weight: 700; margin-top: 4px; font-variant-numeric: tabular-nums; }
.metric-card .m-value small { font-size: 12px; color: var(--txt3); font-weight: 400; }
.metric-card .m-sub { font-size: 11px; color: var(--txt3); margin-top: 2px; }
.metric-card.good .m-value { color: #66bb6a; }
.metric-card.warn .m-value { color: #ffa726; }
.metric-card.bad .m-value { color: #ef5350; }

/* ---- 面板 ---- */
.panel { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); margin-bottom: 14px; overflow: hidden; }
.panel-head { display: flex; justify-content: space-between; align-items: center; gap: 10px; flex-wrap: wrap; padding: 10px 14px; border-bottom: 1px solid var(--border); background: var(--bg2); }
.panel-head h2 { font-size: 14px; font-weight: 600; }
.hint { font-size: 11px; color: var(--txt3); font-weight: 400; margin-left: 8px; }

/* ---- 轮次 tab ---- */
.turn-tabs { display: flex; gap: 6px; }
.turn-tab {
  font-size: 12px; padding: 4px 12px; border-radius: 20px; cursor: pointer;
  border: 1px solid var(--border); color: var(--txt2); background: transparent; transition: all .15s;
}
.turn-tab:hover { border-color: var(--accent); color: var(--txt); }
.turn-tab.active { background: var(--accent); border-color: var(--accent); color: #fff; }

/* ---- 时间轴 ---- */
.timeline-body { position: relative; }
#timelineCanvas { display: block; width: 100%; cursor: grab; }
#timelineCanvas.dragging { cursor: grabbing; }
.tooltip {
  position: absolute; z-index: 20; pointer-events: none; max-width: 320px;
  background: rgba(10, 15, 26, .96); border: 1px solid var(--accent); border-radius: 8px;
  padding: 8px 11px; font-size: 12px; line-height: 1.55; color: var(--txt);
  box-shadow: 0 6px 24px rgba(0,0,0,.5);
}
.tooltip .tt-title { font-weight: 700; margin-bottom: 3px; }
.tooltip .tt-row { color: var(--txt2); }
.tooltip .tt-row b { color: var(--txt); font-variant-numeric: tabular-nums; }

/* ---- 底部两栏 ---- */
.bottom-grid { display: grid; grid-template-columns: 1.2fr 1fr; gap: 14px; }
@media (max-width: 1000px) { .bottom-grid { grid-template-columns: 1fr; } }

/* ---- 瀑布图 ---- */
.waterfall { padding: 14px; display: flex; flex-direction: column; gap: 16px; }
.wf-turn { cursor: pointer; border: 1px solid transparent; border-radius: 10px; padding: 10px 12px; transition: all .15s; background: var(--bg2); }
.wf-turn:hover { border-color: var(--border); }
.wf-turn.active { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent) inset; }
.wf-head { display: flex; justify-content: space-between; font-size: 12.5px; margin-bottom: 8px; }
.wf-head .wf-total { font-weight: 700; font-variant-numeric: tabular-nums; }
.wf-head .wf-total.good { color: #66bb6a; } .wf-head .wf-total.warn { color: #ffa726; } .wf-head .wf-total.bad { color: #ef5350; }
.wf-bar { display: flex; height: 26px; border-radius: 6px; overflow: hidden; background: #0e1420; }
.wf-seg { position: relative; display: flex; align-items: center; justify-content: center; font-size: 10.5px; color: #fff; white-space: nowrap; overflow: hidden; min-width: 2px; }
.wf-seg span { text-shadow: 0 1px 2px rgba(0,0,0,.6); padding: 0 3px; }
.wf-legend { display: flex; flex-wrap: wrap; gap: 10px 16px; font-size: 11.5px; color: var(--txt2); padding: 0 2px; }
.wf-legend i { display: inline-block; width: 10px; height: 10px; border-radius: 3px; margin-right: 5px; vertical-align: -1px; }
.wf-note { font-size: 11px; color: var(--txt3); }

/* ---- 事件流水 ---- */
.log-filter {
  background: var(--bg); border: 1px solid var(--border); color: var(--txt);
  border-radius: 8px; padding: 6px 10px; font-size: 12.5px; width: 220px; outline: none;
}
.log-filter:focus { border-color: var(--accent); }
.event-log { max-height: 420px; overflow-y: auto; font-size: 12.5px; }
.log-row {
  display: grid; grid-template-columns: 86px 64px 1fr; gap: 8px; padding: 6px 14px;
  border-bottom: 1px solid rgba(38, 51, 82, .4); cursor: pointer; align-items: baseline;
}
.log-row:hover { background: var(--panel2); }
.log-row.focus { background: rgba(79, 140, 255, .15); }
.log-ts { color: var(--txt3); font-variant-numeric: tabular-nums; font-family: ui-monospace, monospace; font-size: 11.5px; }
.log-track { font-size: 10.5px; font-weight: 700; text-transform: uppercase; padding: 1px 7px; border-radius: 10px; text-align: center; color: #0b0f17; }
.log-text { color: var(--txt2); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.log-text b { color: var(--txt); font-weight: 600; }
.empty-tip { padding: 20px; color: var(--txt3); text-align: center; }

/* ---- 弹层 ---- */
.modal { position: fixed; inset: 0; z-index: 100; background: rgba(5, 8, 14, .72); display: flex; align-items: center; justify-content: center; padding: 24px; }
.modal[hidden] { display: none; }
.modal-card { background: var(--panel); border: 1px solid var(--border); border-radius: 14px; max-width: 760px; width: 100%; max-height: 86vh; display: flex; flex-direction: column; }
.modal-card.small { max-width: 520px; }
.modal-head { display: flex; justify-content: space-between; align-items: center; padding: 14px 18px; border-bottom: 1px solid var(--border); }
.modal-head h2 { font-size: 16px; }
.modal-body { padding: 16px 20px 24px; overflow-y: auto; font-size: 13.5px; line-height: 1.7; color: var(--txt2); }
.modal-body h3 { color: var(--txt); margin: 14px 0 6px; font-size: 14px; }
.modal-body pre { background: #0a0e18; border: 1px solid var(--border); border-radius: 8px; padding: 12px; font-size: 12px; overflow-x: auto; color: #a6c7ff; line-height: 1.55; margin: 8px 0; }
.modal-body code { background: #0a0e18; padding: 1px 6px; border-radius: 4px; font-size: 12px; color: #a6c7ff; }
.modal-body ul { padding-left: 20px; }
.modal-body li { margin: 4px 0; }

.foot { text-align: center; color: var(--txt3); font-size: 11.5px; margin-top: 8px; }

/* ---- 实时模式 ---- */
.live-bar { display: flex; gap: 8px; margin-bottom: 10px; }
.live-api { flex: 1; width: auto; }
.live-sessions { display: flex; flex-direction: column; gap: 6px; min-height: 60px; }
.live-row { display: flex; justify-content: space-between; align-items: center; gap: 10px; background: var(--bg2); border: 1px solid var(--border); border-radius: 8px; padding: 8px 12px; cursor: pointer; font-size: 13px; transition: all .15s; }
.live-row:hover { border-color: var(--accent); }
.live-row .lr-meta { color: var(--txt3); font-size: 11.5px; }
.btn.live-on { background: #1d3a26; border-color: #2f7a45; color: #7ee2a0; }
@keyframes livePulse { 0%,100% { opacity: 1; } 50% { opacity: .45; } }
.btn.live-on .dot { display: inline-block; width: 8px; height: 8px; border-radius: 50%; background: #4caf50; animation: livePulse 1.2s infinite; }

/* 滚动条 */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-thumb { background: #2a3552; border-radius: 4px; }
::-webkit-scrollbar-track { background: transparent; }