:root {
  color-scheme: light dark;
  font-family: system-ui, sans-serif;
  line-height: 1.4;
}

body {
  margin: 0;
  background: #111;
  color: #eee;
}

main {
  max-width: 720px;
  margin: 0 auto;
  padding: 1.5rem;
}

header h1 {
  margin: 0 0 0.25rem;
  font-size: 1.5rem;
}

header p {
  margin: 0 0 1.5rem;
  color: #aaa;
}

.panel {
  background: #1b1b1b;
  border: 1px solid #333;
  border-radius: 8px;
  padding: 1rem;
  margin-bottom: 1rem;
}

.panel h2 {
  margin: 0 0 0.75rem;
  font-size: 1rem;
}

label {
  display: block;
  margin-bottom: 0.75rem;
  font-size: 0.875rem;
  color: #bbb;
}

input[type="text"] {
  display: block;
  width: 100%;
  margin-top: 0.25rem;
  padding: 0.5rem 0.65rem;
  border: 1px solid #444;
  border-radius: 6px;
  background: #0d0d0d;
  color: #eee;
  box-sizing: border-box;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}

button {
  padding: 0.45rem 0.85rem;
  border: 1px solid #555;
  border-radius: 6px;
  background: #2a2a2a;
  color: #eee;
  cursor: pointer;
}

button:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

button#connectBtn {
  background: #1f6feb;
  border-color: #1f6feb;
}

.status {
  margin: 0;
  font-size: 0.875rem;
}

.status.ok {
  color: #3fb950;
}

.status.err {
  color: #f85149;
}

.session-info {
  margin: 0.75rem 0 0;
  font-size: 0.8rem;
}

.session-info.hidden {
  display: none;
}

.session-info dt {
  float: left;
  clear: left;
  width: 7rem;
  color: #888;
}

.session-info dd {
  margin: 0 0 0.25rem 7.5rem;
}

#messages {
  list-style: none;
  margin: 0 0 0.75rem;
  padding: 0;
  min-height: 200px;
  max-height: 360px;
  overflow-y: auto;
  border: 1px solid #333;
  border-radius: 6px;
  background: #0d0d0d;
}

#messages li {
  padding: 0.5rem 0.65rem;
  border-bottom: 1px solid #222;
  font-size: 0.875rem;
}

#messages li.in {
  background: #132018;
}

#messages li.out {
  background: #121a28;
}

#messages li.sys {
  color: #888;
  font-style: italic;
}

#messages .meta {
  display: block;
  font-size: 0.75rem;
  color: #888;
  margin-bottom: 0.15rem;
}

#sendForm {
  display: flex;
  gap: 0.5rem;
}

#sendForm input {
  flex: 1;
  margin: 0;
}