/* macOS-flavoured design tokens and primitives. System font, system
   colours, hairline separators, translucent sidebar, 10 px cards. */
:root {
  color-scheme: light dark;
  --font: -apple-system, BlinkMacSystemFont, "SF Pro Text", "SF Pro Display", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, monospace;

  --bg: #f5f5f7;
  --bg-elevated: #ffffff;
  --card: rgba(255, 255, 255, 0.86);
  --card-border: rgba(0, 0, 0, 0.06);
  --sidebar: rgba(236, 236, 240, 0.72);
  --sidebar-selected: rgba(0, 0, 0, 0.08);
  --text: #1d1d1f;
  --text-2: rgba(60, 60, 67, 0.62);
  --text-3: rgba(60, 60, 67, 0.36);
  --sep: rgba(60, 60, 67, 0.2);
  --control: rgba(120, 120, 128, 0.14);
  --control-hover: rgba(120, 120, 128, 0.22);
  --track: rgba(120, 120, 128, 0.16);

  --blue: #007aff;
  --green: #34c759;
  --orange: #ff9500;
  --red: #ff3b30;
  --indigo: #5856d6;
  --gray: #8e8e93;

  --radius: 10px;
  --radius-s: 6px;
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.06), 0 8px 24px rgba(0, 0, 0, 0.06);
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1e1e20;
    --bg-elevated: #2a2a2d;
    --card: rgba(255, 255, 255, 0.055);
    --card-border: rgba(255, 255, 255, 0.07);
    --sidebar: rgba(40, 40, 44, 0.6);
    --sidebar-selected: rgba(255, 255, 255, 0.1);
    --text: #f5f5f7;
    --text-2: rgba(235, 235, 245, 0.6);
    --text-3: rgba(235, 235, 245, 0.32);
    --sep: rgba(84, 84, 88, 0.6);
    --control: rgba(120, 120, 128, 0.24);
    --control-hover: rgba(120, 120, 128, 0.34);
    --track: rgba(120, 120, 128, 0.28);
    --blue: #0a84ff;
    --green: #30d158;
    --orange: #ff9f0a;
    --red: #ff453a;
    --indigo: #5e5ce6;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.4), 0 10px 30px rgba(0, 0, 0, 0.35);
  }
}

* { box-sizing: border-box; }
html, body {
  margin: 0;
  height: 100%;
  font-family: var(--font);
  font-size: 13px;
  line-height: 1.45;
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  user-select: none;
  -webkit-user-select: none;
}
body { background: var(--bg); }
body.transparent { background: transparent; }
h1, h2, h3 { margin: 0; font-weight: 600; letter-spacing: -0.01em; }
h1 { font-size: 22px; letter-spacing: -0.02em; }
h2 { font-size: 15px; }
h3 { font-size: 13px; color: var(--text-2); font-weight: 500; text-transform: uppercase; letter-spacing: 0.04em; font-size: 11px; }
p { margin: 0; }
.muted { color: var(--text-2); }
.small { font-size: 12px; }
.mono { font-family: var(--mono); font-variant-numeric: tabular-nums; }
.num { font-variant-numeric: tabular-nums; }
a { color: var(--blue); text-decoration: none; }
::selection { background: color-mix(in srgb, var(--blue) 30%, transparent); }

/* ------------------------------------------------------------- layout */
.window {
  display: grid;
  grid-template-columns: 200px 1fr;
  height: 100vh;
}
.sidebar {
  background: var(--sidebar);
  -webkit-backdrop-filter: blur(30px) saturate(1.6);
  backdrop-filter: blur(30px) saturate(1.6);
  border-right: 1px solid var(--card-border);
  padding: 52px 10px 12px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  -webkit-app-region: drag;
}
.sidebar .brand {
  display: flex; align-items: center; gap: 8px; padding: 0 8px 12px;
  font-weight: 600; font-size: 13px; color: var(--text-2);
}
.sidebar .brand img { width: 20px; height: 20px; border-radius: 5px; }
.sidebar-item {
  -webkit-app-region: no-drag;
  display: flex; align-items: center; gap: 9px;
  padding: 6px 8px; border-radius: 7px; cursor: default;
  color: var(--text); font-size: 13px;
}
.sidebar-item svg { width: 17px; height: 17px; color: var(--blue); flex: none; }
.sidebar-item:hover { background: rgba(120,120,128,0.1); }
.sidebar-item.active { background: var(--sidebar-selected); font-weight: 500; }
.sidebar .spacer { flex: 1; }
.sidebar .status {
  -webkit-app-region: no-drag;
  padding: 8px; border-radius: 8px; font-size: 12px; color: var(--text-2);
  display: flex; align-items: center; gap: 8px;
}
.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--gray); flex: none; transition: background .25s; }
.dot.ok { background: var(--green); } .dot.warn { background: var(--orange); } .dot.fast { background: var(--red); }
.dot.listening { background: var(--blue); }
.dot.pulse { animation: pulse 1.2s ease-in-out infinite; }
@keyframes pulse { 0%,100% { opacity: 1 } 50% { opacity: .35 } }

.content { overflow: auto; padding: 44px 28px 28px; background: var(--bg); }
.native-frame .titlebar-drag { display: none; }
.native-frame .sidebar { padding-top: 16px; }
.native-frame .content { padding-top: 28px; }
.titlebar-drag { position: fixed; top: 0; left: 0; right: 0; height: 38px; -webkit-app-region: drag; z-index: 1; }
.page { display: none; max-width: 760px; }
.page.active { display: block; }
.page-header { display: flex; align-items: baseline; justify-content: space-between; margin-bottom: 18px; gap: 16px; }
.page-header p { color: var(--text-2); margin-top: 3px; }

/* --------------------------------------------------------------- cards */
.card {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 16px;
  box-shadow: 0 1px 1px rgba(0,0,0,0.03);
}
.card + .card, .stack > * + * { margin-top: 14px; }
.grid-2 > .card, .grid-3 > .card, .grid-4 > .card { margin-top: 0; }
.row { display: flex; align-items: center; gap: 12px; }
.row.between { justify-content: space-between; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; grid-auto-rows: 1fr; }

/* settings style grouped list */
.list { padding: 0; }
.list .item {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 11px 16px; min-height: 44px;
}
.list .item + .item { border-top: 1px solid var(--card-border); }
.list .item .label { display: flex; flex-direction: column; gap: 1px; }
.list .item .label .desc { color: var(--text-2); font-size: 12px; }

/* --------------------------------------------------------------- stats */
.stat { padding: 12px 14px; }
.stat .value { font-size: 22px; font-weight: 600; letter-spacing: -0.02em; font-variant-numeric: tabular-nums; }
.stat .value small { font-size: 12px; font-weight: 500; color: var(--text-2); margin-left: 3px; letter-spacing: 0; }
.stat .label { color: var(--text-2); font-size: 12px; margin-top: 1px; line-height: 1.3; }

/* ------------------------------------------------------------ controls */
.btn {
  -webkit-app-region: no-drag;
  appearance: none; border: 0; cursor: default;
  font: inherit; font-size: 13px; font-weight: 500;
  padding: 5px 14px; border-radius: 6px; min-height: 26px;
  background: var(--bg-elevated); color: var(--text);
  box-shadow: 0 0 0 1px rgba(0,0,0,0.08), 0 1px 1px rgba(0,0,0,0.08);
  transition: transform .08s ease, filter .12s ease;
}
.btn:active { filter: brightness(0.92); }
.btn.primary { background: var(--blue); color: #fff; box-shadow: 0 0 0 1px rgba(0,0,0,0.06), inset 0 1px 0 rgba(255,255,255,0.18), 0 1px 1px rgba(0,0,0,0.12); }
.btn.danger { color: var(--red); }
.btn.large { padding: 8px 20px; font-size: 14px; border-radius: 8px; min-height: 34px; }
.btn.stop { background: var(--red); color: #fff; }
.btn[disabled] { opacity: .45; }
.btn.quiet { background: transparent; box-shadow: none; color: var(--blue); }

.segmented {
  -webkit-app-region: no-drag;
  display: inline-flex; background: var(--control); border-radius: 7px; padding: 2px; gap: 1px;
}
.segmented button {
  appearance: none; border: 0; font: inherit; font-size: 12px; font-weight: 500;
  padding: 3px 12px; border-radius: 5px; background: transparent; color: var(--text); cursor: default;
}
.segmented button.active { background: var(--bg-elevated); box-shadow: 0 1px 3px rgba(0,0,0,0.12), 0 0 0 0.5px rgba(0,0,0,0.04); }

.switch {
  -webkit-app-region: no-drag;
  position: relative; width: 38px; height: 22px; border-radius: 11px; flex: none;
  background: var(--track); transition: background .2s; cursor: default;
}
.switch::after {
  content: ""; position: absolute; top: 2px; left: 2px; width: 18px; height: 18px; border-radius: 50%;
  background: #fff; box-shadow: 0 1px 3px rgba(0,0,0,0.25), 0 0 0 0.5px rgba(0,0,0,0.05); transition: transform .2s cubic-bezier(.2,.8,.2,1);
}
.switch[aria-checked="true"] { background: var(--green); }
.switch[aria-checked="true"]::after { transform: translateX(16px); }

select, input[type="text"], input[type="number"] {
  -webkit-app-region: no-drag;
  font: inherit; font-size: 13px; color: var(--text);
  background: var(--bg-elevated); border: 0; border-radius: 6px; padding: 4px 26px 4px 10px; min-height: 26px;
  box-shadow: 0 0 0 1px rgba(0,0,0,0.08), 0 1px 1px rgba(0,0,0,0.06);
  appearance: none;
  background-image: linear-gradient(45deg, transparent 50%, var(--text-2) 50%), linear-gradient(135deg, var(--text-2) 50%, transparent 50%);
  background-position: calc(100% - 13px) 11px, calc(100% - 9px) 11px;
  background-size: 4px 4px, 4px 4px;
  background-repeat: no-repeat;
  max-width: 240px;
}
input[type="number"] { background-image: none; padding-right: 10px; width: 72px; text-align: right; }
input[type="range"] {
  -webkit-app-region: no-drag;
  appearance: none; height: 4px; border-radius: 2px; background: var(--track); width: 160px;
}
input[type="range"]::-webkit-slider-thumb {
  appearance: none; width: 20px; height: 20px; border-radius: 50%; background: #fff;
  box-shadow: 0 1px 3px rgba(0,0,0,0.3), 0 0 0 0.5px rgba(0,0,0,0.08);
}
.value-badge { min-width: 44px; text-align: right; color: var(--text-2); font-variant-numeric: tabular-nums; }

.pill {
  display: inline-flex; align-items: center; gap: 6px; padding: 3px 10px; border-radius: 999px;
  font-size: 12px; font-weight: 600; background: var(--control); color: var(--text-2);
  transition: background .25s, color .25s;
}
.pill.ok { background: color-mix(in srgb, var(--green) 18%, transparent); color: var(--green); }
.pill.warn { background: color-mix(in srgb, var(--orange) 20%, transparent); color: var(--orange); }
.pill.fast { background: color-mix(in srgb, var(--red) 18%, transparent); color: var(--red); }
.pill.listening { background: color-mix(in srgb, var(--blue) 16%, transparent); color: var(--blue); }

.meter { height: 6px; border-radius: 3px; background: var(--track); overflow: hidden; }
.meter > i { display: block; height: 100%; width: 0; background: var(--blue); border-radius: 3px; transition: width .08s linear; }

.passage {
  font-size: 17px; line-height: 1.6; letter-spacing: -0.005em; user-select: text; -webkit-user-select: text;
  padding: 4px 2px; color: var(--text);
}
.empty { text-align: center; color: var(--text-2); padding: 48px 20px; }
.empty .icon { font-size: 30px; margin-bottom: 8px; opacity: .5; }
canvas { display: block; }
kbd {
  font: inherit; font-size: 11px; padding: 1px 6px; border-radius: 4px; background: var(--control); color: var(--text-2);
}
table.sessions { width: 100%; border-collapse: collapse; }
table.sessions td { padding: 9px 10px; border-top: 1px solid var(--card-border); font-variant-numeric: tabular-nums; }
table.sessions tr:first-child td { border-top: 0; }
table.sessions tr { cursor: default; }
table.sessions tr:hover td { background: rgba(120,120,128,0.08); }
table.sessions tr.selected td { background: color-mix(in srgb, var(--blue) 14%, transparent); }