* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: system-ui, sans-serif;
  font-size: 14px;
  color: #e0e0e0;
  background: #1a1a1a;
}

#app {
  padding: 1rem;
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  height: 100%;
}

header {
  margin-bottom: 1rem;
}

#auth-status {
  color: #888;
  font-size: 12px;
}

#main {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 1rem;
  flex: 1;
  min-height: 0;
}

#channels h2, #posts-area h2 {
  font-size: 14px;
  margin: 0 0 0.5rem 0;
  color: #aaa;
}

#channel-list {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.channel {
  padding: 0.5rem;
  cursor: pointer;
  border-radius: 4px;
}

.channel:hover {
  background: #2a2a2a;
}

.channel.selected {
  background: #0a5;
  color: #000;
}

#posts-list {
  flex: 1;
  overflow-y: auto;
  border: 1px solid #333;
  border-radius: 4px;
  padding: 0.5rem;
  margin-bottom: 0.5rem;
  min-height: 120px;
}

.post {
  padding: 0.5rem 0;
  border-bottom: 1px solid #2a2a2a;
}

.post:last-child {
  border-bottom: none;
}

.post-meta {
  font-size: 12px;
  color: #888;
  margin-bottom: 0.25rem;
}

#new-post {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

#post-body {
  width: 100%;
  padding: 0.5rem;
  background: #252525;
  border: 1px solid #333;
  color: #e0e0e0;
  font-family: inherit;
  resize: vertical;
  border-radius: 4px;
}

#post-submit {
  align-self: flex-end;
  padding: 0.35rem 0.75rem;
  background: #0a5;
  color: #000;
  border: none;
  border-radius: 4px;
  cursor: pointer;
}