:root {
  --bg: #0e1116;
  --panel: #161b22;
  --panel-2: #1c2330;
  --border: #2a3340;
  --text: #e7ecf3;
  --muted: #8b97a7;
  --accent: #4da3ff;
  --accent-2: #7ee0c0;
  --warn: #ffcf5c;
  --err: #ff6b6b;
  --ok: #57d977;
  --chip: #233044;
}
* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; }
body {
  background: var(--bg);
  color: var(--text);
  font: 15px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  display: flex; flex-direction: column; height: 100vh;
}

/* Top bar */
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; padding: 12px 18px; background: var(--panel); border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}
.brand { display: flex; align-items: center; gap: 10px; }
.brand h1 { font-size: 16px; margin: 0; font-weight: 650; letter-spacing: .2px; }
.brand .sub { color: var(--muted); font-size: 12px; }
.dot { width: 10px; height: 10px; border-radius: 50%; background: var(--muted); box-shadow: 0 0 0 3px rgba(255,255,255,.04); }
.dot.ok { background: var(--ok); } .dot.warn { background: var(--warn); } .dot.err { background: var(--err); }
.dot.live { background: var(--ok); animation: pulse 1.4s infinite; }
@keyframes pulse { 0%{box-shadow:0 0 0 0 rgba(87,217,119,.5);} 70%{box-shadow:0 0 0 8px rgba(87,217,119,0);} 100%{box-shadow:0 0 0 0 rgba(87,217,119,0);} }

.controls { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.btn {
  background: var(--panel-2); color: var(--text); border: 1px solid var(--border);
  padding: 8px 14px; border-radius: 8px; cursor: pointer; font-size: 14px; font-weight: 550;
}
.btn:hover { border-color: #3a475a; }
.btn:disabled { opacity: .45; cursor: not-allowed; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #06121f; }
.btn.primary:hover { filter: brightness(1.07); }
.btn.ghost { background: transparent; color: var(--muted); }
.toggle { display: inline-flex; align-items: center; gap: 6px; color: var(--muted); font-size: 13px; user-select: none; }

.statusline { padding: 8px 18px; color: var(--muted); font-size: 13px; background: #11161d; border-bottom: 1px solid var(--border); }
.statusline.ok { color: var(--ok); } .statusline.warn { color: var(--warn); } .statusline.err { color: var(--err); }

/* Settings */
.settings { background: var(--panel); border-bottom: 1px solid var(--border); }
.settings summary { cursor: pointer; padding: 10px 18px; color: var(--muted); font-size: 13px; user-select: none; }
.settings summary:hover { color: var(--text); }
.settings-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 14px 22px; padding: 4px 18px 16px; align-items: start; }
.settings-grid label { display: flex; flex-direction: column; gap: 6px; font-size: 12px; color: var(--muted); }
.settings-grid select, .settings-grid textarea {
  background: var(--bg); color: var(--text); border: 1px solid var(--border); border-radius: 8px; padding: 8px;
  font: inherit;
}
.settings-grid input[type=range] { width: 100%; }
.settings-grid .hint { color: #5f6b7c; font-size: 11px; }
.settings-grid .val { color: var(--accent-2); }
.settings-grid .ctx { grid-column: 1 / -1; }
.settings-grid textarea { resize: vertical; min-height: 120px; line-height: 1.45; }
.meter-wrap { display: flex; flex-direction: column; gap: 6px; font-size: 12px; color: var(--muted); }
.meter { height: 10px; background: var(--bg); border: 1px solid var(--border); border-radius: 6px; overflow: hidden; }
.meter-fill { height: 100%; width: 0%; background: linear-gradient(90deg, var(--ok), var(--accent)); transition: width .05s linear; }

/* Main grid */
.grid { flex: 1; display: grid; grid-template-columns: 1.55fr 1fr; gap: 0; min-height: 0; }
.panel { display: flex; flex-direction: column; min-height: 0; border-right: 1px solid var(--border); }
.insights-panel { border-right: none; background: #12171f; }
.panel-head { display: flex; align-items: baseline; justify-content: space-between; padding: 12px 18px; border-bottom: 1px solid var(--border); }
.panel-head h2 { font-size: 13px; margin: 0; text-transform: uppercase; letter-spacing: .8px; color: var(--muted); }
.muted { color: var(--muted); font-size: 12px; }

/* Transcript */
.transcript { overflow-y: auto; padding: 14px 18px; display: flex; flex-direction: column; gap: 12px; }
.transcript .empty { color: #5f6b7c; font-style: italic; margin-top: 8px; }
.seg { background: var(--panel); border: 1px solid var(--border); border-left: 3px solid var(--accent); border-radius: 10px; padding: 12px 14px; }
.seg.latest { border-left-color: var(--accent-2); box-shadow: 0 0 0 1px rgba(126,224,192,.15); }
.seg .en { font-size: 19px; line-height: 1.45; color: var(--text); }
.seg .src { margin-top: 8px; font-size: 13px; color: var(--muted); }
.seg .src .label { color: #5f6b7c; margin-right: 6px; }
.seg.thinking { opacity: .7; }
.seg .tags { margin-top: 10px; display: flex; flex-wrap: wrap; gap: 6px; }
.seg .tag { font-size: 11px; padding: 2px 8px; border-radius: 999px; background: var(--chip); color: var(--accent-2); border: 1px solid var(--border); }
.seg .tag.fw { color: var(--warn); }

/* Insights */
.insights-panel { overflow-y: auto; }
.insight-section { padding: 12px 18px; border-bottom: 1px solid var(--border); }
.insight-section h3 { font-size: 12px; margin: 0 0 10px; color: var(--muted); text-transform: uppercase; letter-spacing: .6px; }
ul.chips { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 7px; }
ul.chips li { background: var(--panel); border: 1px solid var(--border); border-radius: 8px; padding: 7px 10px; font-size: 13.5px; }
ul.chips.frameworks li { border-left: 3px solid var(--warn); }
ul.concepts { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 8px; }
ul.concepts li { background: var(--panel); border: 1px solid var(--border); border-radius: 8px; padding: 8px 10px; }
ul.concepts .term { font-weight: 600; color: var(--accent-2); font-size: 14px; }
ul.concepts .zh { color: var(--muted); font-weight: 500; margin-left: 6px; font-size: 13px; }
ul.concepts .gloss { display: block; margin-top: 3px; color: var(--muted); font-size: 12.5px; }
.insight-section .none { color: #5f6b7c; font-size: 12.5px; font-style: italic; }

::-webkit-scrollbar { width: 10px; }
::-webkit-scrollbar-thumb { background: #283142; border-radius: 6px; }
::-webkit-scrollbar-track { background: transparent; }

/* Control selects in the top bar */
.sel { display: inline-flex; flex-direction: column; gap: 2px; font-size: 10px; color: var(--muted); text-transform: uppercase; letter-spacing: .5px; }
.sel select { background: var(--panel-2); color: var(--text); border: 1px solid var(--border); border-radius: 8px; padding: 6px 8px; font-size: 13px; }

/* Performance leaderboard */
.leaderboard { display: flex; align-items: center; gap: 14px; padding: 8px 18px; background: #11161d; border-bottom: 1px solid var(--border); overflow-x: auto; }
.lb-title { font-size: 11px; text-transform: uppercase; letter-spacing: .7px; color: var(--muted); white-space: nowrap; }
.lb-cards { display: flex; gap: 8px; }
.lb-empty { color: #5f6b7c; font-size: 12px; font-style: italic; }
.lb-card { background: var(--panel); border: 1px solid var(--border); border-radius: 8px; padding: 6px 10px; min-width: 120px; }
.lb-card.best { border-color: var(--ok); box-shadow: 0 0 0 1px rgba(87,217,119,.25); }
.lb-card.down { border-color: var(--err); }
.lb-name { font-size: 12.5px; font-weight: 600; color: var(--text); display: flex; align-items: center; gap: 6px; }
.lb-badge { font-size: 9px; text-transform: uppercase; letter-spacing: .5px; color: #06121f; background: var(--ok); border-radius: 4px; padding: 1px 5px; }
.lb-metric { font-size: 13px; color: var(--accent-2); margin-top: 2px; }
.lb-sub { color: var(--muted); font-size: 11px; }
.lb-err { color: var(--err); font-size: 11px; margin-left: 4px; }

/* Provider badge on each segment */
.prov { font-size: 11px; color: var(--muted); background: var(--chip); border: 1px solid var(--border); border-radius: 999px; padding: 1px 8px; vertical-align: middle; white-space: nowrap; }

/* Interim (live partial) recognition text */
.interim { color: var(--accent); font-size: 12px; min-height: 14px; font-style: italic; }

/* Race comparison block */
.race { margin-top: 10px; border-top: 1px dashed var(--border); padding-top: 8px; }
.race-head { font-size: 10px; text-transform: uppercase; letter-spacing: .6px; color: #5f6b7c; margin-bottom: 6px; }
.race-row { display: grid; grid-template-columns: 110px 44px 1fr; gap: 8px; align-items: baseline; font-size: 13px; padding: 3px 0; color: var(--muted); }
.race-row.win { color: var(--text); }
.race-row.win .rl { color: var(--ok); font-weight: 600; }
.race-row.fail .rx { color: var(--err); }
.race-row .rl { font-size: 12px; }
.race-row .rt { font-size: 12px; color: var(--accent-2); }

/* Tabs (Live Translate / Phil Speaks Chinese) */
.tabs { display: flex; gap: 4px; }
.tab {
  background: transparent; color: var(--muted); border: 1px solid transparent;
  border-radius: 8px; padding: 7px 12px; cursor: pointer; font-size: 13px; font-weight: 600;
}
.tab:hover { color: var(--text); }
.tab.active { color: var(--text); background: var(--panel-2); border-color: var(--border); }

/* View containers fill the remaining height like the original grid did */
#liveView, #philView { flex: 1; display: flex; flex-direction: column; min-height: 0; }

/* Phil composer */
.composer {
  padding: 16px 18px; background: var(--panel); border-bottom: 1px solid var(--border);
  display: flex; flex-direction: column; gap: 10px;
}
.composer-head { display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap; }
.composer-head h2 { font-size: 15px; margin: 0; }
.composer textarea {
  background: var(--bg); color: var(--text); border: 1px solid var(--border); border-radius: 10px;
  padding: 12px; font: inherit; font-size: 16px; resize: vertical; min-height: 64px; line-height: 1.5;
}
.composer textarea:focus { outline: none; border-color: var(--accent); }
.composer-row { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.composer-spacer { flex: 1; }
.seg-toggle { display: inline-flex; align-items: center; gap: 8px; font-size: 13px; color: var(--muted); }
.seg-toggle .hint { color: #5f6b7c; font-size: 11px; }
.composer-status { font-size: 12.5px; color: var(--accent-2); min-height: 16px; }
.composer-status.err { color: var(--err); }

/* Conversation thread */
.thread-panel { flex: 1; min-height: 0; border-right: none; }
.thread { overflow-y: auto; padding: 14px 18px; display: flex; flex-direction: column; gap: 10px; }
.thread .empty { color: #5f6b7c; font-style: italic; margin-top: 8px; }
.msg {
  background: var(--panel); border: 1px solid var(--border); border-left: 3px solid var(--accent-2);
  border-radius: 10px; padding: 10px 12px;
}
.msg-zh { display: flex; align-items: flex-start; gap: 10px; }
.msg-zh .zh-text { font-size: 20px; line-height: 1.5; color: var(--text); }
.msg-en { margin-top: 6px; font-size: 13px; color: var(--muted); }
.msg-meta { margin-top: 6px; font-size: 11px; color: #5f6b7c; }

/* Replay buttons (round play) */
.replay {
  flex: none; background: var(--accent); color: #06121f; border: none; border-radius: 50%;
  width: 28px; height: 28px; cursor: pointer; font-size: 12px; line-height: 1;
  display: inline-flex; align-items: center; justify-content: center;
}
.replay:hover { filter: brightness(1.1); }
.replay.loading { opacity: .5; pointer-events: none; }
.seg-replay { width: 22px; height: 22px; font-size: 10px; vertical-align: middle; margin-right: 4px; }
.panel-head .btn { padding: 4px 10px; font-size: 12px; }

@media (max-width: 900px) {
  .grid { grid-template-columns: 1fr; }
  .panel { border-right: none; border-bottom: 1px solid var(--border); }
  .settings-grid { grid-template-columns: 1fr; }
  .tabs { order: 3; width: 100%; }
}

/* ---- Phones: scrollable document, sticky controls, finger-friendly ------- */
@media (max-width: 700px) {
  html, body { height: auto; }
  body {
    display: block; min-height: 100vh; min-height: 100dvh;
    -webkit-text-size-adjust: 100%;
  }

  /* Keep Start/Stop + tabs pinned while the translation scrolls under them. */
  .topbar {
    position: sticky; top: 0; z-index: 20;
    padding: 10px 12px calc(10px + env(safe-area-inset-bottom, 0)); gap: 8px;
    padding-top: calc(10px + env(safe-area-inset-top, 0));
  }
  .brand { width: 100%; }
  .brand h1 { font-size: 15px; }
  .brand .sub { display: none; }

  .tabs { order: -1; width: 100%; }
  .tab { flex: 1; min-height: 42px; }

  .controls { width: 100%; gap: 8px; }
  .controls .btn { flex: 1 1 auto; min-height: 46px; padding: 12px 14px; font-size: 15px; }
  .controls .btn.primary { flex-basis: 100%; }     /* Start spans the row */
  .sel { flex: 1 1 44%; }
  .sel select { min-height: 46px; padding: 10px; font-size: 16px; }  /* 16px = no iOS zoom */

  .statusline, .leaderboard { padding-left: 12px; padding-right: 12px; }
  .settings summary { padding-left: 12px; padding-right: 12px; }
  .settings-grid { padding-left: 12px; padding-right: 12px; }
  .settings-grid select, .settings-grid textarea { font-size: 16px; }

  /* Document scrolls; the live pane keeps its own scroll so it auto-follows. */
  #liveView, #philView { display: block; min-height: 0; }
  .grid { display: block; }
  .panel-head { padding: 10px 12px; }
  .transcript-panel { border-bottom: 1px solid var(--border); }
  .transcript { height: 56vh; height: 56dvh; padding: 12px; }
  .seg .en { font-size: 18px; }
  .insights-panel { overflow: visible; }
  .insight-section { padding: 12px; }

  .composer { padding: 12px; }
  .composer-head h2 { font-size: 15px; }
  .composer textarea { font-size: 16px; }
  .composer-row { gap: 10px; }
  .composer-row .sel { flex: 1 1 44%; }
  .composer-spacer { display: none; }
  #philSpeakBtn { flex: 1 1 100%; min-height: 48px; }
  .thread-panel { border-bottom: none; }
  .thread { height: 52vh; height: 52dvh; padding: 12px; }
  .msg-zh .zh-text { font-size: 19px; }
}