:root {
  color-scheme: light;
  --bg: #f6f8fb;
  --panel: #ffffff;
  --panel-soft: #eef3f8;
  --ink: #102033;
  --muted: #5f6f82;
  --soft: #94a3b8;
  --line: #dbe3ec;
  --line-strong: #c8d4e0;
  --accent: #0f8b8d;
  --accent-strong: #0b6f72;
  --success: #16824a;
  --danger: #b43224;
  --shadow: 0 24px 70px rgb(0 0 0 / 6%);
}

* {
  box-sizing: border-box;
}

html {
  background: var(--bg);
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    linear-gradient(180deg, rgb(226 241 246 / 76%) 0, #f6f8fb 260px),
    var(--bg);
  color: var(--ink);
  font-family:
    ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
}

button,
input,
select {
  font: inherit;
}

.shell {
  width: min(1000px, calc(100vw - 40px));
  margin: 0 auto;
  padding: 22px 0 44px;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: end;
  gap: 24px;
  margin-bottom: 18px;
}

.eyebrow,
.panel-label {
  margin: 0 0 12px;
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 750;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1,
h2,
p {
  margin-top: 0;
}

h1 {
  max-width: 920px;
  margin-bottom: 12px;
  color: var(--ink);
  font-size: clamp(1.9rem, 4vw, 3.35rem);
  line-height: 0.98;
}

h2 {
  margin-bottom: 10px;
  font-size: 0.98rem;
  line-height: 1.2;
}

.summary {
  max-width: 760px;
  margin-bottom: 0;
  color: #334155;
  font-size: clamp(0.98rem, 1.4vw, 1.08rem);
  line-height: 1.5;
}

.status-card,
.callout,
.control-dock,
.dock-section,
.meter-card,
article {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
}

.status-card {
  min-width: 180px;
  padding: 16px 18px;
  box-shadow: var(--shadow);
}

.status-panel {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
  color: var(--ink);
  font-size: 0.95rem;
  font-weight: 750;
}

.status-dot {
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: var(--soft);
}

.status-dot.live {
  background: var(--success);
}

.status-dot.error {
  background: var(--danger);
}

.status-note {
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.45;
}

.callout {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 18px;
  align-items: center;
  margin-bottom: 22px;
  padding: 18px 20px;
  background: rgb(236 247 247 / 72%);
}

.callout h2,
.callout p {
  margin-bottom: 0;
}

.callout p {
  color: #464641;
  line-height: 1.5;
}

.callout-rule {
  width: 5px;
  height: 64px;
  border-radius: 999px;
  background: var(--accent);
}

.control-dock {
  display: grid;
  grid-template-columns: minmax(190px, 0.8fr) minmax(280px, 1fr) minmax(300px, 0.9fr);
  gap: 12px;
  align-items: stretch;
  width: 100%;
  margin-bottom: 14px;
  padding: 12px;
  background: rgb(236 247 247 / 72%);
}

.dock-section {
  min-width: 0;
  padding: 16px;
}

.field {
  display: grid;
  align-content: center;
  gap: 18px;
}

label {
  color: var(--muted);
  font-size: 0.74rem;
  font-weight: 750;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

select {
  width: 100%;
  min-width: 0;
  height: 52px;
  padding: 0 12px;
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  background: var(--panel);
  color: var(--ink);
  font-size: 0.95rem;
  font-weight: 750;
  outline: none;
}

input[type="range"]:focus-visible,
select:focus-visible,
button:focus-visible {
  outline: 3px solid rgb(15 139 141 / 24%);
  outline-offset: 2px;
}

.event-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
  margin-bottom: 14px;
}

.event-strip span {
  display: block;
  min-width: 0;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgb(255 255 255 / 76%);
  color: #244154;
  font-size: 0.84rem;
  font-weight: 750;
  text-align: center;
  white-space: nowrap;
}

.mix-control {
  display: grid;
  align-content: center;
  gap: 12px;
  min-width: 0;
}

.mix-heading,
.mix-scale {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.range-label {
  display: inline;
}

#mixValue {
  color: var(--ink);
  font-size: 1rem;
  font-weight: 750;
}

input[type="range"] {
  width: 100%;
  accent-color: var(--accent);
}

.mix-scale {
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 750;
}

.button-row {
  display: grid;
  align-content: center;
  gap: 12px;
}

button {
  min-height: 52px;
  padding: 0 16px;
  border: 1px solid var(--accent-strong);
  border-radius: 8px;
  background: var(--accent);
  color: #ffffff;
  cursor: pointer;
  font-weight: 750;
  white-space: nowrap;
}

#startButton {
  width: 100%;
  min-width: 0;
}

button.secondary {
  border-color: var(--line-strong);
  background: var(--panel);
  color: var(--ink);
}

button:disabled {
  border-color: var(--line);
  background: #ededeb;
  color: var(--soft);
  cursor: not-allowed;
}

.button-row button {
  width: 100%;
}

.meters {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-bottom: 14px;
}

.meter-card {
  display: grid;
  gap: 8px;
  padding: 12px 14px;
  background: rgb(255 255 255 / 82%);
}

.meter-card span {
  color: var(--muted);
  font-size: 0.8rem;
  font-weight: 700;
}

meter,
progress {
  width: 100%;
  height: 12px;
}

.workspace {
  display: grid;
  grid-template-columns: minmax(273px, 0.98fr) minmax(320px, 1.06fr) minmax(280px, 0.96fr);
  gap: 14px;
}

article {
  min-width: 0;
  min-height: 260px;
  padding: 16px;
}

.guide-card {
  background: rgb(255 255 255 / 82%);
}

ol {
  margin: 0;
  padding-left: 22px;
  color: #334155;
  line-height: 1.48;
}

.diagnostics {
  display: grid;
  gap: 0;
  margin: 18px 0 0;
  border-top: 1px solid var(--line);
}

.diagnostics div {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  padding: 9px 0;
  border-bottom: 1px solid var(--line);
}

.diagnostics dt {
  color: var(--muted);
  font-weight: 700;
}

.diagnostics dd {
  margin: 0;
  color: var(--ink);
  text-align: right;
}

.transcript,
.log {
  overflow: auto;
  border-radius: 8px;
  background: var(--panel-soft);
  line-height: 1.55;
}

.transcript {
  min-height: 210px;
  max-height: 360px;
  padding: 14px;
  color: #26384c;
  font-size: 0.96rem;
}

.log {
  min-height: 210px;
  max-height: 360px;
  padding: 12px;
  color: #334155;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.8rem;
  white-space: pre-wrap;
}

.log-entry {
  padding-bottom: 7px;
}

@media (max-width: 980px) {
  .hero,
  .control-dock,
  .workspace {
    grid-template-columns: 1fr;
  }

  .control-dock {
    align-items: stretch;
  }

  .status-card {
    min-width: 0;
  }

  .event-strip {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 700px) {
  .shell {
    width: min(100% - 28px, 1000px);
    padding: 24px 0 36px;
  }

  h1 {
    font-size: clamp(2rem, 10vw, 2.8rem);
  }

  .button-row {
    align-items: stretch;
  }

  #startButton,
  select,
  .mix-control,
  button {
    width: 100%;
  }

  .meters {
    grid-template-columns: 1fr;
  }

  .event-strip {
    grid-template-columns: 1fr;
  }

  .event-strip span {
    white-space: normal;
  }
}