:root {
  color-scheme: light;
  --bg: #f4f7f6;
  --ink: #192421;
  --muted: #5d6c66;
  --panel: #ffffff;
  --line: #d9e2de;
  --accent: #087f5b;
  --accent-strong: #066448;
  --warn: #b42318;
  --info: #155eef;
  --shadow: 0 8px 24px rgba(21, 37, 31, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--ink);
  font-family: Arial, Helvetica, sans-serif;
}

button,
select,
textarea {
  font: inherit;
}

.app-shell {
  width: min(920px, 100%);
  margin: 0 auto;
  padding: 18px 14px 28px;
}

.top-bar,
.controls-band,
.talk-band,
.results-band,
.compare-band,
.log-band {
  margin-bottom: 14px;
  padding: 14px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

h1 {
  margin: 0 0 8px;
  font-size: clamp(1.55rem, 7vw, 2.2rem);
  line-height: 1.08;
}

h2 {
  margin: 0 0 10px;
  font-size: 1rem;
}

.privacy-note {
  margin: 0 0 12px;
  color: var(--muted);
  line-height: 1.45;
}

.status-grid,
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}

.metrics-grid {
  grid-template-columns: repeat(2, 1fr);
}

.status-pill,
.metrics-grid div {
  min-width: 0;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfdfc;
}

.status-pill span,
.metrics-grid span,
label span {
  display: block;
  margin-bottom: 5px;
  color: var(--muted);
  font-size: 0.78rem;
}

.status-pill strong,
.metrics-grid strong {
  display: block;
  overflow-wrap: anywhere;
  font-size: 0.9rem;
}

.controls-band {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

label {
  display: block;
  min-width: 0;
}

select,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  color: var(--ink);
}

select {
  min-height: 44px;
  padding: 8px 10px;
}

textarea {
  min-height: 116px;
  padding: 11px;
  resize: vertical;
  line-height: 1.45;
}

.talk-band {
  text-align: center;
}

.talk-button {
  width: min(100%, 430px);
  min-height: 94px;
  border: 0;
  border-radius: 8px;
  background: var(--accent);
  color: #fff;
  font-size: 1.35rem;
  font-weight: 700;
  box-shadow: 0 10px 18px rgba(8, 127, 91, 0.22);
  touch-action: none;
}

.talk-button.is-recording {
  background: var(--warn);
  box-shadow: 0 10px 18px rgba(180, 35, 24, 0.18);
}

.talk-button:disabled {
  opacity: 0.55;
}

.action-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  margin-top: 12px;
}

.action-row button {
  min-height: 42px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  color: var(--ink);
  overflow-wrap: anywhere;
}

.action-row button:last-child {
  border-color: var(--info);
  color: var(--info);
}

.results-band {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.metrics-grid,
.error-box {
  grid-column: 1 / -1;
}

.error-box {
  padding: 10px;
  border-radius: 8px;
  background: #fff1f0;
  color: var(--warn);
  border: 1px solid #ffccc7;
}

.comparison-results {
  display: grid;
  gap: 10px;
}

.result-card {
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfdfc;
}

.result-card h3 {
  margin: 0 0 8px;
  font-size: 1rem;
}

.result-card p {
  margin: 0 0 8px;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.result-card small {
  color: var(--muted);
}

#logOutput {
  min-height: 120px;
  max-height: 260px;
  margin: 0;
  overflow: auto;
  white-space: pre-wrap;
  color: #243b35;
  font-size: 0.84rem;
}

@media (max-width: 720px) {
  .status-grid,
  .controls-band,
  .results-band,
  .action-row {
    grid-template-columns: 1fr;
  }

  .metrics-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .app-shell {
    padding-inline: 10px;
  }
}

@media (max-width: 380px) {
  .metrics-grid {
    grid-template-columns: 1fr;
  }
}