:root {
  --bg: #05080f;
  --panel: #0b1220;
  --accent: #00d4ff;
  --accent-dim: #0a4a5c;
  --text: #d9f4ff;
  --muted: #5c7d8a;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: radial-gradient(circle at top, #0d1a2b, var(--bg) 70%);
  color: var(--text);
  font-family: "Segoe UI", system-ui, sans-serif;
  height: 100vh;
  display: flex;
  justify-content: center;
}

#app {
  width: 100%;
  max-width: 720px;
  display: flex;
  flex-direction: column;
  height: 100vh;
  padding: 16px;
}

header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--accent-dim);
}

.orb {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 35%, #7ff, var(--accent) 60%, var(--accent-dim));
  box-shadow: 0 0 20px var(--accent);
  animation: pulse 2.4s ease-in-out infinite;
}

.orb.speaking { animation: pulse 0.6s ease-in-out infinite; }

@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 0.9; }
  50% { transform: scale(1.15); opacity: 1; }
}

h1 {
  font-size: 1.4rem;
  letter-spacing: 0.3em;
  margin: 0;
  color: var(--accent);
}

.status {
  margin-left: auto;
  font-size: 0.8rem;
  color: var(--muted);
}

main#chat {
  flex: 1;
  overflow-y: auto;
  padding: 16px 4px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.msg {
  max-width: 80%;
  padding: 10px 14px;
  border-radius: 10px;
  line-height: 1.4;
  white-space: pre-wrap;
}

.msg.user {
  align-self: flex-end;
  background: var(--accent-dim);
  color: var(--text);
}

.msg.assistant {
  align-self: flex-start;
  background: var(--panel);
  border: 1px solid var(--accent-dim);
}

.msg.tool {
  align-self: flex-start;
  font-size: 0.8rem;
  color: var(--muted);
  border-left: 2px solid var(--accent-dim);
  padding-left: 10px;
}

footer {
  display: flex;
  align-items: center;
  gap: 8px;
  padding-top: 12px;
  border-top: 1px solid var(--accent-dim);
  flex-wrap: wrap;
}

#input {
  flex: 1;
  min-width: 150px;
  background: var(--panel);
  border: 1px solid var(--accent-dim);
  color: var(--text);
  padding: 10px 12px;
  border-radius: 8px;
  font-size: 1rem;
}

button {
  background: var(--accent-dim);
  color: var(--text);
  border: 1px solid var(--accent);
  padding: 10px 14px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 1rem;
}

button:hover { background: var(--accent); color: #001018; }

#mic.listening { background: var(--accent); color: #001018; }

.voice-toggle {
  font-size: 0.8rem;
  color: var(--muted);
  display: flex;
  align-items: center;
  gap: 4px;
}

.logout-btn {
  padding: 6px 10px;
  font-size: 1rem;
  line-height: 1;
}

/* Touch targets stay comfortably tappable on phones (Apple HIG: 44px). */
button, #mic, #send {
  min-height: 40px;
}

@media (max-width: 480px) {
  #app { padding: 10px; }
  header { flex-wrap: wrap; gap: 8px; padding-bottom: 8px; }
  h1 { font-size: 1.1rem; letter-spacing: 0.2em; }
  .status { order: 3; margin-left: 0; width: 100%; }
  .msg { max-width: 92%; font-size: 0.95rem; }
  footer { gap: 6px; }
  #input { min-width: 0; flex-basis: 100%; }
  .voice-toggle { font-size: 0.75rem; }
}