:root {
  --bg: #0d1117;
  --panel: #161b22;
  --text: #e6edf3;
  --muted: #9da7b3;
  --accent: #2f81f7;
  --accent-soft: #1f6feb;
  --border: #30363d;
  --success: #2ea043;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "IBM Plex Sans", "Segoe UI", sans-serif;
  color: var(--text);
  background: radial-gradient(circle at top, #1b2330, var(--bg));
}

.layout {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.card {
  width: min(700px, 100%);
  background: color-mix(in hsl, var(--panel) 92%, black);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 24px;
  box-shadow: 0 18px 40px rgb(0 0 0 / 35%);
}

h1,
h2 {
  margin: 0;
}

h1 {
  font-size: 1.75rem;
}

h2 {
  font-size: 1.1rem;
}

.muted {
  color: var(--muted);
}

.stack {
  display: grid;
  gap: 10px;
  margin-top: 18px;
}

label {
  display: grid;
  gap: 6px;
  font-size: 0.95rem;
}

input,
button {
  border-radius: 10px;
  border: 1px solid var(--border);
  padding: 10px 12px;
  font: inherit;
}

input {
  background: #0d1117;
  color: var(--text);
}

button {
  background: var(--accent);
  color: white;
  border: 0;
  cursor: pointer;
}

button:hover {
  background: var(--accent-soft);
}

button.secondary {
  background: #30363d;
}

.row {
  display: flex;
  gap: 10px;
}

.messages {
  min-height: 180px;
  max-height: 260px;
  overflow: auto;
  background: #0d1117;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px;
  display: grid;
  gap: 8px;
}

.voice-panel {
  background: #0d1117;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 10px;
}

.debug-log {
  min-height: 120px;
  max-height: 220px;
  overflow: auto;
  background: #05080d;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 10px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  font-size: 12px;
  line-height: 1.4;
  white-space: pre-wrap;
}

.message {
  padding: 8px 10px;
  border-radius: 8px;
  width: fit-content;
  max-width: 95%;
  word-break: break-word;
}

.message.self {
  margin-left: auto;
  background: color-mix(in hsl, var(--accent) 35%, #0d1117);
}

.message.peer {
  background: #1f2937;
}

.status {
  margin-top: 16px;
  color: var(--success);
  min-height: 1.3em;
}

@media (max-width: 640px) {
  .card {
    padding: 16px;
  }

  .row {
    flex-direction: column;
  }
}