/* SIP Trace Analyzer — "line-side console"
   Two-channel color language used everywhere:
   amber = SIP signaling, cyan = RTP media. */

:root {
  --bg: #0d1220;
  --panel: #151c2e;
  --panel-2: #1b2438;
  --line: #2a3550;
  --ink: #e8ecf5;
  --muted: #8b94a8;
  --sig: #f5a83c;        /* signaling channel */
  --sig-dim: #a97527;
  --med: #3cc8d8;        /* media channel */
  --med-dim: #2a8b96;
  --ok: #4fbe7e;
  --warn: #e0b23e;
  --err: #e4574f;
  --mono: ui-monospace, "SF Mono", "Cascadia Mono", Consolas, Menlo, monospace;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; }
body {
  background: var(--bg);
  color: var(--ink);
  font: 14px/1.5 var(--sans);
}
button { font: inherit; cursor: pointer; }
input, select { font: inherit; }
h1, h2, h3 { margin: 0; font-weight: 600; }
.mono { font-family: var(--mono); }

.app { display: grid; grid-template-columns: 264px 1fr; min-height: 100vh; }

/* ---------- sidebar ---------- */
.sidebar {
  background: var(--panel);
  border-right: 1px solid var(--line);
  padding: 20px 16px;
  display: flex; flex-direction: column; gap: 18px;
}
.brand { display: flex; gap: 10px; align-items: flex-start; }
.brand-mark { width: 30px; height: 30px; flex: none; margin-top: 2px; }
.brand h1 {
  font-family: var(--mono);
  font-size: 16px; line-height: 1.15;
  letter-spacing: .04em; text-transform: uppercase;
}
.brand-sub { font-family: var(--mono); font-size: 11px; color: var(--muted); }

.eyebrow {
  font-family: var(--mono); font-size: 11px; letter-spacing: .14em;
  text-transform: uppercase; color: var(--muted);
}

.upload-zone {
  border: 1.5px dashed var(--line);
  border-radius: 8px;
  padding: 16px;
  text-align: center;
  transition: border-color .15s, background .15s;
}
.upload-zone.dragover { border-color: var(--sig); background: rgba(245,168,60,.06); }
.upload-zone p { margin: 0 0 10px; color: var(--muted); }
.upload-zone strong { color: var(--ink); }
.upload-progress { margin-top: 12px; font-size: 12px; color: var(--muted); }
.upload-progress .bar { height: 4px; background: var(--line); border-radius: 2px; overflow: hidden; margin-bottom: 6px; }
.upload-progress .fill { height: 100%; width: 0; background: var(--sig); transition: width .2s; }

.cap-list-head { display: flex; justify-content: space-between; align-items: center; }
.cap-list { list-style: none; margin: 0; padding: 0; overflow-y: auto; flex: 1; }
.cap-list li {
  padding: 9px 10px; border-radius: 6px; cursor: pointer;
  border: 1px solid transparent;
}
.cap-list li:hover { background: var(--panel-2); }
.cap-list li.active { background: var(--panel-2); border-color: var(--line); }
.cap-name {
  font-family: var(--mono); font-size: 12.5px;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.cap-meta { font-size: 11.5px; color: var(--muted); display: flex; gap: 8px; align-items: center; }
.status-pill {
  font-family: var(--mono); font-size: 10px; padding: 1px 6px; border-radius: 999px;
}
.status-processing { background: rgba(224,178,62,.15); color: var(--warn); }
.status-ready { background: rgba(79,190,126,.15); color: var(--ok); }
.status-failed { background: rgba(228,87,79,.15); color: var(--err); }

.legend { display: flex; gap: 14px; font-size: 12px; color: var(--muted); font-family: var(--mono); }
.dot { display: inline-block; width: 8px; height: 8px; border-radius: 2px; margin-right: 5px; }
.dot-sig { background: var(--sig); }
.dot-med { background: var(--med); }

/* ---------- main ---------- */
.main { padding: 24px 28px; min-width: 0; }

.empty-view { max-width: 460px; margin: 12vh auto 0; text-align: center; color: var(--muted); }
.empty-art { width: 160px; margin-bottom: 20px; }
.empty-view h2 { color: var(--ink); margin-bottom: 8px; }

.view-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 16px; margin-bottom: 18px; }
.view-head h2 { font-size: 20px; margin: 2px 0 4px; overflow-wrap: anywhere; }
.cap-stats { margin: 0; color: var(--muted); font-size: 13px; font-family: var(--mono); }
.head-actions { display: flex; gap: 8px; flex: none; }
.back-btn { margin-bottom: 10px; }

.btn {
  background: var(--panel-2); color: var(--ink);
  border: 1px solid var(--line); border-radius: 6px;
  padding: 7px 13px; text-decoration: none; display: inline-block;
}
.btn:hover { border-color: var(--muted); }
.btn-primary { background: var(--sig); border-color: var(--sig); color: #1a1206; font-weight: 600; }
.btn-primary:hover { background: #ffbb55; }
.btn-danger:hover { border-color: var(--err); color: var(--err); }
.icon-btn { background: none; border: none; color: var(--muted); font-size: 15px; }
.icon-btn:hover { color: var(--ink); }
:focus-visible { outline: 2px solid var(--med); outline-offset: 2px; }

/* filters */
.filters { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 14px; }
.filters input, .filters select {
  background: var(--panel); color: var(--ink);
  border: 1px solid var(--line); border-radius: 6px; padding: 7px 10px;
  font-family: var(--mono); font-size: 13px;
}
.filters input::placeholder { color: var(--muted); }

/* calls table */
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 8px; }
.calls-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.calls-table th {
  text-align: left; padding: 9px 12px;
  font-family: var(--mono); font-size: 11px; letter-spacing: .1em; text-transform: uppercase;
  color: var(--muted); border-bottom: 1px solid var(--line);
  background: var(--panel);
  white-space: nowrap;
}
.calls-table td {
  padding: 9px 12px; border-bottom: 1px solid var(--line);
  font-family: var(--mono); white-space: nowrap;
  max-width: 240px; overflow: hidden; text-overflow: ellipsis;
}
.calls-table tbody tr { cursor: pointer; }
.calls-table tbody tr:hover { background: var(--panel-2); }
.calls-table tr:last-child td { border-bottom: none; }

.state { padding: 2px 8px; border-radius: 999px; font-size: 11px; }
.state-completed, .state-answered, .state-registered { background: rgba(79,190,126,.15); color: var(--ok); }
.state-failed { background: rgba(228,87,79,.15); color: var(--err); }
.state-cancelled { background: rgba(139,148,168,.15); color: var(--muted); }
.state-incomplete, .state-redirected, .state-unknown, .state-responses-only { background: rgba(224,178,62,.15); color: var(--warn); }

.media-yes { color: var(--med); }
.media-no { color: var(--muted); }

.anom-badge {
  display: inline-block; padding: 1px 7px; margin: 1px 3px 1px 0;
  border-radius: 999px; font-size: 11px; font-family: var(--mono);
  border: 1px solid;
}
.anom-error { color: var(--err); border-color: rgba(228,87,79,.5); }
.anom-warning { color: var(--warn); border-color: rgba(224,178,62,.5); }
.anom-info { color: var(--muted); border-color: var(--line); }
.anom-row { margin-top: 8px; }

.pager { display: flex; gap: 10px; align-items: center; margin-top: 12px; color: var(--muted); font-family: var(--mono); font-size: 12.5px; }

/* ---------- call detail ---------- */
.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--line); margin-bottom: 16px; }
.tabs button {
  background: none; border: none; color: var(--muted);
  padding: 9px 14px; border-bottom: 2px solid transparent;
  font-family: var(--mono); font-size: 13px;
}
.tabs button.active { color: var(--ink); border-bottom-color: var(--sig); }
.tabs button:hover { color: var(--ink); }

.flow-layout { display: flex; gap: 16px; align-items: flex-start; }
.flow-scroll { overflow: auto; flex: 1; border: 1px solid var(--line); border-radius: 8px; background: var(--panel); }
.flow-scroll svg { display: block; }

.msg-panel {
  width: 420px; flex: none; max-height: 75vh; overflow: auto;
  background: var(--panel); border: 1px solid var(--line); border-radius: 8px;
}
.msg-panel-head {
  display: flex; justify-content: space-between; align-items: center;
  padding: 10px 14px; border-bottom: 1px solid var(--line);
  font-family: var(--mono); position: sticky; top: 0; background: var(--panel);
}
.raw {
  margin: 0; padding: 14px; font-family: var(--mono); font-size: 12px;
  white-space: pre-wrap; word-break: break-all; color: var(--ink);
}
.raw .sdp { color: var(--med); }

/* ladder SVG element styles */
.lifeline { stroke: var(--line); stroke-width: 1.5; }
.actor-label { fill: var(--ink); font-family: var(--mono); font-size: 12px; }
.actor-box { fill: var(--panel-2); stroke: var(--line); rx: 5; }
.arrow-sig { stroke: var(--sig); stroke-width: 1.8; }
.arrow-resp { stroke: var(--sig-dim); stroke-width: 1.6; }
.arrow-err { stroke: var(--err); stroke-width: 1.8; }
.arrow-ok { stroke: var(--ok); stroke-width: 1.8; }
.arrow-retrans { stroke-dasharray: 5 4; opacity: .75; }
.msg-label { fill: var(--ink); font-family: var(--mono); font-size: 11.5px; cursor: pointer; }
.msg-label.sdp-tag { fill: var(--med); }
.ts-label { fill: var(--muted); font-family: var(--mono); font-size: 10px; }
.msg-hit { fill: transparent; cursor: pointer; }
.msg-hit:hover + line, .row-hover { opacity: .8; }

/* timeline */
.tl-wrap { border: 1px solid var(--line); border-radius: 8px; background: var(--panel); overflow-x: auto; padding: 8px 0; }
.tl-lane-label { fill: var(--muted); font-family: var(--mono); font-size: 11px; }
.tl-axis { stroke: var(--line); }
.tl-axis-label { fill: var(--muted); font-family: var(--mono); font-size: 10px; }
.tl-sig-tick { stroke: var(--sig); stroke-width: 2; }
.tl-med-bar { fill: var(--med); opacity: .55; rx: 3; }
.tl-event-label { fill: var(--ink); font-family: var(--mono); font-size: 10.5px; }
.tl-marker { stroke: var(--ok); stroke-dasharray: 3 3; }

/* media cards */
.stream-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(340px, 1fr)); gap: 14px; }
.stream-card { background: var(--panel); border: 1px solid var(--line); border-radius: 8px; padding: 16px; border-top: 3px solid var(--med); }
.stream-card h3 { font-family: var(--mono); font-size: 13px; font-weight: 600; margin-bottom: 4px; overflow-wrap: anywhere; }
.stream-sub { color: var(--muted); font-family: var(--mono); font-size: 12px; margin: 0 0 12px; }
.metric-grid { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 10px 14px; }
.metric .v { font-family: var(--mono); font-size: 17px; }
.metric .k { font-size: 11px; color: var(--muted); text-transform: uppercase; letter-spacing: .08em; }
.mos-good { color: var(--ok); } .mos-mid { color: var(--warn); } .mos-bad { color: var(--err); }
.empty-note { color: var(--muted); padding: 30px; text-align: center; }

/* messages tab */
.msg-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.msg-table td, .msg-table th { padding: 7px 10px; border-bottom: 1px solid var(--line); font-family: var(--mono); text-align: left; }
.msg-table th { color: var(--muted); font-size: 11px; text-transform: uppercase; letter-spacing: .1em; }
.msg-table tbody tr { cursor: pointer; }
.msg-table tbody tr:hover { background: var(--panel-2); }
.retrans-tag { color: var(--warn); font-size: 10.5px; }

@media (max-width: 900px) {
  .app { grid-template-columns: 1fr; }
  .sidebar { border-right: none; border-bottom: 1px solid var(--line); }
  .flow-layout { flex-direction: column; }
  .msg-panel { width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
}

/* print = "export PDF": show only the flow diagram, light background */
@media print {
  body { background: #fff; color: #000; }
  .sidebar, .tabs, .head-actions, .filters, .msg-panel, .back-btn { display: none !important; }
  .app { display: block; }
  .flow-scroll { border: none; background: #fff; overflow: visible; }
  :root { --ink: #111; --muted: #555; --line: #bbb; --panel: #fff; --panel-2: #f2f2f2; }
}