:root {
  --bg: #07080c;
  --panel: rgba(20, 23, 32, 0.72);
  --panel-solid: #12141b;
  --line: rgba(255, 255, 255, 0.08);
  --line-strong: rgba(255, 255, 255, 0.16);
  --text: #eef0f7;
  --muted: #8a90a3;
  --faint: #5a6072;
  --teal: #5eead4;
  --sky: #7dd3fc;
  --violet: #a78bfa;
  --pink: #f472b6;
  --amber: #fbbf24;
  --good: #4ade80;
  --ok: #fbbf24;
  --slow: #fb7185;
  --grad: linear-gradient(90deg, var(--teal), var(--violet) 50%, var(--pink));
  --radius: 20px;
  --mono: ui-monospace, 'SF Mono', 'JetBrains Mono', Menlo, monospace;
  font-family: 'Inter', ui-sans-serif, system-ui, -apple-system, 'Segoe UI', sans-serif;
  color: var(--text);
  background: var(--bg);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  font-feature-settings: 'ss01', 'cv11';
  -webkit-font-smoothing: antialiased;
}

.backdrop {
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(60rem 40rem at 10% -10%, rgba(94, 234, 212, 0.12), transparent 60%),
    radial-gradient(50rem 40rem at 100% 0%, rgba(167, 139, 250, 0.14), transparent 60%),
    radial-gradient(40rem 30rem at 50% 110%, rgba(244, 114, 182, 0.08), transparent 60%);
}
.backdrop::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px);
  background-size: 22px 22px;
  mask-image: linear-gradient(to bottom, black, transparent 70%);
}

h1, h2, h3 { margin: 0; font-weight: 600; letter-spacing: -0.01em; }
small { font-size: 0.62em; font-weight: 500; color: var(--muted); margin-left: 0.15em; letter-spacing: 0; }

/* ---------- top bar ---------- */

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 88rem;
  margin: 0 auto;
  padding: 1.5rem 2rem 1rem;
}
.brand { display: flex; align-items: center; gap: 0.75rem; }
.brand h1 { font-size: 1.15rem; }
.brand h1 span { color: var(--muted); font-weight: 500; }
.brand-mark { display: flex; align-items: center; gap: 3px; height: 22px; }
.brand-mark i {
  width: 3px;
  border-radius: 2px;
  background: var(--grad);
  background-size: 400% 100%;
  height: var(--rest);
  transition: height 0.6s ease-out;
  --rest: 40%;
  --delay: 0s;
}
.brand-mark i:nth-child(2) { --rest: 60%; --delay: 0.2s; background-position: 25% 0; }
.brand-mark i:nth-child(3) { --rest: 80%; --delay: 0.4s; background-position: 50% 0; }
.brand-mark i:nth-child(4) { --rest: 60%; --delay: 0.6s; background-position: 75% 0; }
.brand-mark i:nth-child(5) { --delay: 0.8s; background-position: 100% 0; }
body[data-state='streaming'] .brand-mark i { animation: bar 1.4s ease-in-out var(--delay) infinite; }
@keyframes bar { 50% { height: 100%; } }

.state-pill {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.45rem 0.9rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--panel);
  backdrop-filter: blur(12px);
  font-family: var(--mono);
  font-size: 0.8rem;
}
.state-pill strong { font-weight: 500; }
.state-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--faint); }
body[data-state='acquiring_mic'] .state-dot,
body[data-state='requesting_key'] .state-dot,
body[data-state='connecting'] .state-dot,
body[data-state='finishing'] .state-dot { background: var(--amber); animation: pulse 1s ease-in-out infinite; }
body[data-state='streaming'] .state-dot { background: var(--slow); box-shadow: 0 0 0 0 rgba(251, 113, 133, 0.6); animation: ping 1.4s infinite; }
body[data-state='done'] .state-dot { background: var(--good); }
body[data-state='failed'] .state-dot { background: var(--slow); }
@keyframes pulse { 50% { opacity: 0.35; } }
@keyframes ping { 70% { box-shadow: 0 0 0 8px rgba(251, 113, 133, 0); } 100% { box-shadow: 0 0 0 0 rgba(251, 113, 133, 0); } }

main { max-width: 88rem; margin: 0 auto; padding: 0 2rem 4rem; display: grid; gap: 2rem; }

.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  backdrop-filter: blur(16px);
}
.card-head { display: flex; align-items: baseline; justify-content: space-between; gap: 1rem; margin-bottom: 1rem; }
.card-head h2, .card-head h3 { font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.12em; color: var(--muted); font-weight: 600; }
.hint { font-size: 0.75rem; color: var(--faint); }
.hint em { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }

/* ---------- live area ---------- */

.live { display: grid; grid-template-columns: minmax(0, 3fr) minmax(0, 2fr); gap: 1.25rem; }
@media (max-width: 960px) { .live { grid-template-columns: 1fr; } }

.stage {
  position: relative;
  overflow: hidden;
  min-height: 30rem;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding-top: 2.5rem;
  background: #0c0e13;
}
#visualizer { display: block; flex: 1; width: 100%; min-height: 20rem; }
.stage-caption {
  position: absolute;
  z-index: 1;
  top: 1.1rem;
  left: 1.25rem;
  right: 1.25rem;
  display: flex;
  justify-content: space-between;
  font-family: var(--mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--faint);
}
.legend { display: flex; align-items: center; gap: 0.5rem; }
.legend i { width: 18px; height: 2px; border-radius: 2px; background: var(--grad); }

.steps {
  position: relative;
  display: flex;
  gap: 0.35rem;
  list-style: none;
  margin: 1rem 1.25rem 0.75rem;
  padding: 0;
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--faint);
}
.steps li { flex: 1; padding-top: 0.5rem; border-top: 2px solid var(--line-strong); transition: color 0.3s, border-color 0.3s; }
.steps li[data-status='past'] { color: var(--muted); border-color: var(--violet); }
.steps li[data-status='current'] { color: var(--text); border-image: var(--grad) 1; }
.steps li[data-status='failed'] { color: var(--slow); border-color: var(--slow); }

.controls {
  position: relative;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  padding: 0.5rem 1.25rem 1rem;
}

.select {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-right: auto;
  padding: 0.35rem 0.4rem 0.35rem 0.9rem;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.03);
  font-size: 0.82rem;
  color: var(--muted);
}
.select select {
  appearance: none;
  -webkit-appearance: none;
  padding: 0.35rem 1.7rem 0.35rem 0.75rem;
  border: 0;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%23aab' fill='none' stroke-width='1.5'/%3E%3C/svg%3E") no-repeat right 0.65rem center;
  color: var(--text);
  font: 600 0.85rem var(--mono);
  cursor: pointer;
}
.select select:disabled { opacity: 0.5; cursor: default; }
.select span:last-child { margin-right: 0.5rem; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.7rem 1.35rem;
  border: 1px solid transparent;
  border-radius: 999px;
  font: inherit;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
  transition: transform 0.15s, opacity 0.2s, box-shadow 0.3s, background 0.2s;
}
.btn svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; }
.btn:not(:disabled):hover { transform: translateY(-1px); }
.btn:not(:disabled):active { transform: translateY(0) scale(0.98); }
.btn:disabled { opacity: 0.35; cursor: default; }
.btn:focus-visible { outline: 2px solid var(--violet); outline-offset: 3px; }
.btn-start { background: var(--grad) border-box; color: #0b0c10; box-shadow: 0 8px 30px -8px rgba(167, 139, 250, 0.7); }
.btn-start svg { stroke: #0b0c10; }
.btn-start:disabled { box-shadow: none; }
.btn-stop { background: rgba(251, 113, 133, 0.12); border-color: rgba(251, 113, 133, 0.4); color: #fecdd3; }
.btn-stop svg { fill: currentColor; stroke: none; }
body[data-state='streaming'] .btn-stop { box-shadow: 0 0 0 0 rgba(251, 113, 133, 0.5); animation: ping 1.6s infinite; }
.btn-ghost { padding: 0.45rem 0.95rem; border-color: var(--line-strong); background: transparent; font-size: 0.8rem; }

.simulate {
  position: relative;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-wrap: wrap;
  margin: 0 1.25rem 1.25rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
  font-size: 0.75rem;
  color: var(--faint);
}
#phrases { display: flex; gap: 0.5rem; flex-wrap: wrap; }
.btn-phrase svg { width: 14px; height: 14px; fill: currentColor; stroke: none; }
.btn-phrase.playing { border-color: var(--violet); color: var(--violet); }

/* ---------- transcript ---------- */

.transcript-card { display: flex; flex-direction: column; padding: 1.5rem; min-height: 30rem; }
#transcript {
  flex: 1;
  overflow: auto;
  max-height: 26rem;
  font-size: 1.45rem;
  line-height: 1.5;
  letter-spacing: -0.01em;
  white-space: pre-wrap;
  word-break: break-word;
}
#transcript:has(#final:empty):has(#provisional:empty)::before {
  content: 'Press Start and speak — confirmed text appears here, the live guess glows after it.';
  color: var(--faint);
  font-size: 1rem;
}
#final { color: var(--text); }
#provisional {
  font-style: italic;
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  opacity: 0.85;
}
body[data-state='streaming'] #transcript::after,
body[data-state='finishing'] #transcript::after {
  content: '';
  display: inline-block;
  width: 2px;
  height: 1.15em;
  margin-left: 2px;
  vertical-align: -0.18em;
  background: var(--pink);
  animation: blink 1s steps(2) infinite;
}
@keyframes blink { 50% { opacity: 0; } }

#error {
  margin: 1rem 0 0;
  font-family: var(--mono);
  font-size: 0.8rem;
  color: #fecdd3;
}
#error:not(:empty) {
  padding: 0.75rem 0.9rem;
  border: 1px solid rgba(251, 113, 133, 0.35);
  border-radius: 12px;
  background: rgba(251, 113, 133, 0.08);
}

/* ---------- metrics ---------- */

.section-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 1rem; }
.section-head h2 { font-size: 1.25rem; }
.raw-actions { display: flex; align-items: center; gap: 0.75rem; font-size: 0.8rem; color: var(--muted); }

#dashboard { display: grid; gap: 1.25rem; }

.latency-grid { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 1rem; }
@media (max-width: 1200px) { .latency-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
@media (max-width: 640px) { .latency-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }

.tile {
  --tone: var(--faint);
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  padding: 1.1rem 1.1rem 1rem;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--panel);
  overflow: hidden;
  transition: border-color 0.4s;
}
.tile[data-tier='good'] { --tone: var(--good); }
.tile[data-tier='ok'] { --tone: var(--ok); }
.tile[data-tier='slow'] { --tone: var(--slow); }
.tile:not([data-tier='none']) { border-color: color-mix(in srgb, var(--tone) 30%, transparent); }
.tile.hero { background: linear-gradient(160deg, rgba(167, 139, 250, 0.14), var(--panel) 55%); }
.tile header { display: flex; justify-content: space-between; align-items: center; }
.tile-label { font-size: 0.75rem; color: var(--muted); font-weight: 500; }
.tile-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--tone); box-shadow: 0 0 10px var(--tone); transition: background 0.4s; }
.tile[data-tier='none'] .tile-dot { box-shadow: none; }
.tile-value { font-size: 1.9rem; font-weight: 600; font-variant-numeric: tabular-nums; letter-spacing: -0.03em; }
.tile.hero .tile-value { font-size: 2.3rem; }
.tile-meter { height: 3px; border-radius: 3px; background: var(--line); overflow: hidden; }
.tile-meter span { display: block; height: 100%; width: 0; border-radius: inherit; background: var(--tone); transition: width 0.6s cubic-bezier(0.2, 0.8, 0.2, 1), background 0.4s; }
.tile-hint { font-family: var(--mono); font-size: 0.65rem; color: var(--faint); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.tile-extra { display: flex; flex-wrap: wrap; gap: 0.35rem; }
.tile-extra:empty { display: none; }

.chip {
  display: inline-flex;
  padding: 0.2rem 0.55rem;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--muted);
  white-space: nowrap;
}
.chip.ok { color: var(--good); border-color: rgba(74, 222, 128, 0.35); }
.chip.bad { color: var(--slow); border-color: rgba(251, 113, 133, 0.35); }

.tone-teal { --c: var(--teal); }
.tone-sky { --c: var(--sky); }
.tone-violet { --c: var(--violet); }
.tone-pink { --c: var(--pink); }
.tone-amber { --c: var(--amber); }

/* timeline */
.timeline { padding: 1.25rem 1.5rem 1.5rem; }
.timeline-total { font-family: var(--mono); font-size: 0.85rem; font-variant-numeric: tabular-nums; }
.lanes { display: grid; gap: 0.55rem; }
.lane { display: grid; grid-template-columns: 6rem 1fr 5.5rem; align-items: center; gap: 1rem; }
.lane-label { font-size: 0.78rem; color: var(--muted); }
.lane.empty .lane-label { color: var(--faint); }
.lane-value { text-align: right; font-family: var(--mono); font-size: 0.8rem; font-variant-numeric: tabular-nums; }
.lane-track {
  position: relative;
  height: 10px;
  border-radius: 6px;
  background: repeating-linear-gradient(90deg, var(--line) 0 1px, transparent 1px 10%) , rgba(255, 255, 255, 0.025);
}
.lane-bar {
  position: absolute;
  top: 0;
  bottom: 0;
  border-radius: 6px;
  background: linear-gradient(90deg, color-mix(in srgb, var(--c) 55%, transparent), var(--c));
  box-shadow: 0 0 14px -2px var(--c);
  transition: left 0.25s linear, width 0.25s linear;
}
.lane.running .lane-bar { background-size: 200% 100%; animation: shimmer 1.2s linear infinite; background-image: linear-gradient(90deg, color-mix(in srgb, var(--c) 45%, transparent), var(--c), color-mix(in srgb, var(--c) 45%, transparent)); }
@keyframes shimmer { to { background-position: -200% 0; } }
.lane.events .lane-track { background: transparent; border-top: 1px dashed var(--line-strong); height: 26px; border-radius: 0; margin-top: 0.4rem; }
.pin { position: absolute; top: -5px; transform: translateX(-50%); display: flex; flex-direction: column; align-items: center; gap: 4px; transition: left 0.25s linear; }
.pin i { width: 9px; height: 9px; border-radius: 50%; background: var(--c, var(--text)); box-shadow: 0 0 10px var(--c, var(--text)); }
.pin b { font: 500 0.62rem var(--mono); color: var(--muted); white-space: nowrap; }
.pin-first_chunk_sent { --c: var(--pink); }
.pin-first_provisional { --c: var(--violet); }
.pin-first_final { --c: var(--teal); }
.pin-first_provisional b { transform: translateY(12px); }

.metrics-bottom { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.25rem; }
@media (max-width: 960px) { .metrics-bottom { grid-template-columns: 1fr; } }
.stream, .processing { padding: 1.25rem 1.5rem 1.5rem; display: flex; flex-direction: column; gap: 1.1rem; }

.stat-row { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0.75rem; }
.stat { display: flex; flex-direction: column; gap: 0.25rem; }
.stat span { font-size: 0.72rem; color: var(--muted); }
.stat strong { font-size: 1.35rem; font-weight: 600; font-variant-numeric: tabular-nums; letter-spacing: -0.02em; }

.spark-head { display: flex; justify-content: space-between; gap: 1rem; margin-bottom: 0.4rem; font-size: 0.72rem; color: var(--muted); }
.spark-head em { font-style: normal; font-family: var(--mono); font-size: 0.68rem; color: var(--faint); font-variant-numeric: tabular-nums; text-align: right; }
.spark-head em small { font-size: 0.9em; color: inherit; }
.spark { display: block; width: 100%; height: 44px; overflow: visible; }
.spark-line { fill: none; stroke: var(--c); stroke-width: 1.6; vector-effect: non-scaling-stroke; stroke-linejoin: round; }
.spark-area { fill: color-mix(in srgb, var(--c) 22%, transparent); }

.jitter-track { position: relative; height: 18px; border-radius: 9px; background: rgba(255, 255, 255, 0.03); border: 1px solid var(--line); }
.jitter-range { position: absolute; top: 5px; bottom: 5px; border-radius: 4px; background: linear-gradient(90deg, rgba(94, 234, 212, 0.35), rgba(167, 139, 250, 0.35)); transition: all 0.3s; }
.jitter-avg, .jitter-p95, .jitter-target { position: absolute; top: -3px; bottom: -3px; width: 2px; margin-left: -1px; border-radius: 1px; transition: left 0.3s; }
.jitter-avg { background: var(--teal); }
.jitter-p95 { background: var(--pink); }
.jitter-target { background: var(--text); opacity: 0.5; top: -6px; bottom: -6px; width: 1px; }
.jitter-track.empty .jitter-range, .jitter-track.empty .jitter-avg, .jitter-track.empty .jitter-p95 { display: none; }

.lag { display: grid; grid-template-columns: auto 1fr; gap: 1.5rem; align-items: center; }
.lag-ring { position: relative; width: 132px; height: 132px; }
.lag-ring svg { width: 100%; height: 100%; transform: rotate(-90deg); }
.lag-ring circle { fill: none; stroke-width: 9; }
.ring-bg { stroke: var(--line); }
.ring-fg { stroke: var(--tone, var(--faint)); stroke-linecap: round; stroke-dasharray: 100; stroke-dashoffset: 100; transition: stroke-dashoffset 0.35s, stroke 0.4s; filter: drop-shadow(0 0 6px var(--tone, transparent)); }
.processing[data-tier='good'] { --tone: var(--good); }
.processing[data-tier='ok'] { --tone: var(--ok); }
.processing[data-tier='slow'] { --tone: var(--slow); }
.lag-center { position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; }
.lag-center strong { font-size: 1.5rem; font-variant-numeric: tabular-nums; letter-spacing: -0.02em; }
.lag-center span { font-size: 0.68rem; color: var(--muted); }
.proc-bars { display: grid; gap: 0.75rem; }
.proc .spark-head { margin-bottom: 0.3rem; }
.proc-track { height: 6px; border-radius: 3px; background: var(--line); overflow: hidden; }
.proc-fill { display: block; height: 100%; width: 0; border-radius: inherit; background: var(--c); transition: width 0.3s linear; }

/* raw */
.raw { margin-top: 1.25rem; padding: 0; overflow: hidden; }
.raw summary { padding: 0.9rem 1.25rem; cursor: pointer; font-size: 0.8rem; color: var(--muted); list-style: none; }
.raw summary::before { content: '▸'; display: inline-block; margin-right: 0.5rem; transition: transform 0.2s; }
.raw[open] summary::before { transform: rotate(90deg); }
#metrics { margin: 0; padding: 0 1.25rem 1.25rem; max-height: 28rem; overflow: auto; font: 0.75rem/1.55 var(--mono); color: #c4c8d6; }

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