:root {
  color-scheme: dark;
  --bg: #14161a;
  --panel: #1c1f26;
  --border: #2c303a;
  --text: #e7e9ee;
  --muted: #9aa0ab;
  --accent: #5b8def;
  --accent-hot: #e5484d;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

main {
  width: 100%;
  max-width: 480px;
  padding: 2rem;
}

h1 {
  margin: 0 0 0.25rem;
}

.tagline {
  margin: 0 0 0.75rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.presence {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  margin: 0 0 1.5rem;
  color: var(--muted);
  font-size: 0.8rem;
}

.presence-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #3fb950;
  flex: none;
}

.controls {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

button {
  flex: 1;
  padding: 0.6rem 1rem;
  border: none;
  border-radius: 8px;
  background: var(--accent);
  color: white;
  font-size: 0.95rem;
  cursor: pointer;
}

button:disabled {
  background: var(--panel);
  color: var(--muted);
  cursor: not-allowed;
}

#hangup-btn {
  background: var(--accent-hot);
}

#hangup-btn:disabled {
  background: var(--panel);
}

.status {
  color: var(--muted);
  font-size: 0.9rem;
  min-height: 1.2em;
}

.chat {
  margin-top: 1rem;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
}

#chat-log {
  list-style: none;
  margin: 0;
  padding: 0.75rem;
  height: 240px;
  overflow-y: auto;
  font-size: 0.9rem;
}

#chat-log li {
  margin-bottom: 0.5rem;
  word-wrap: break-word;
}

#chat-log li.me {
  color: var(--accent);
}

#chat-log li.system {
  color: var(--muted);
  font-style: italic;
}

#chat-form {
  display: flex;
  border-top: 1px solid var(--border);
}

#chat-input {
  flex: 1;
  border: none;
  background: transparent;
  color: var(--text);
  padding: 0.6rem 0.75rem;
  font-size: 0.9rem;
}

#chat-input:focus {
  outline: none;
}

#chat-form button {
  flex: 0 0 auto;
  border-radius: 0;
  background: transparent;
  color: var(--accent);
}

#chat-form button:disabled {
  color: var(--muted);
}