/* Communicator web client — minimal dark theme. */

:root {
  --bg: #101318;
  --bg2: #171b22;
  --bg3: #1f242e;
  --fg: #d7dbe2;
  --fg-dim: #8b93a1;
  --accent: #5aa2ff;
  --me: #2b3a55;
  --agent: #232936;
  --ok: #3fd68f;
  --warn: #e6c34a;
  --err: #ff6b6b;
  --border: #2a3140;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
  background: var(--bg);
  color: var(--fg);
  font: 15px/1.5 system-ui, -apple-system, "Segoe UI", sans-serif;
}

input, button {
  font: inherit;
  color: inherit;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 12px;
  outline: none;
}
input:focus { border-color: var(--accent); }
button { cursor: pointer; }
button:hover:not(:disabled) { border-color: var(--accent); }
button:disabled { opacity: 0.45; cursor: default; }

/* ---------- landing ---------- */

#landing {
  max-width: 480px;
  margin: 12vh auto 0;
  padding: 0 20px;
}
#landing h1 { font-weight: 600; letter-spacing: 0.02em; }
#landing .hint { color: var(--fg-dim); }
#landing code { color: var(--accent); }
.field { display: block; margin: 14px 0; }
.field span {
  display: block;
  font-size: 12px;
  color: var(--fg-dim);
  margin-bottom: 4px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.field input { width: 100%; }
#landing-status { min-height: 1.5em; color: var(--fg-dim); }
#landing-status.error { color: var(--err); }

/* ---------- chat ---------- */

#chat {
  display: flex;
  height: 100vh;
}

#rail {
  width: 210px;
  flex: 0 0 auto;
  background: var(--bg2);
  border-right: 1px solid var(--border);
  padding: 12px;
  overflow-y: auto;
}
.rail-item {
  display: block;
  width: 100%;
  text-align: left;
  margin-bottom: 6px;
  background: transparent;
  border-color: transparent;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.rail-item.active { background: var(--bg3); border-color: var(--border); }

#pane {
  flex: 1 1 auto;
  display: flex;
  flex-direction: column;
  min-width: 0;
}

#pane-header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--border);
  font-weight: 600;
}

#dot { width: 10px; height: 10px; border-radius: 50%; flex: 0 0 auto; }
.dot-on { background: var(--ok); }
.dot-warn { background: var(--warn); }
.dot-off { background: var(--fg-dim); }

#thread {
  flex: 1 1 auto;
  overflow-y: auto;
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.msg {
  max-width: 70%;
  padding: 8px 12px;
  border-radius: 12px;
  white-space: pre-wrap;
  word-break: break-word;
}
.msg.me {
  align-self: flex-end;
  background: var(--me);
  border-bottom-right-radius: 4px;
}
.msg.agent {
  align-self: flex-start;
  background: var(--agent);
  border-bottom-left-radius: 4px;
}
.msg.system {
  align-self: center;
  color: var(--fg-dim);
  font-size: 12px;
  background: transparent;
  padding: 2px;
}
.msg-status { color: var(--fg-dim); font-size: 11px; margin-left: 6px; }

#composer {
  display: flex;
  gap: 8px;
  padding: 12px 18px;
  border-top: 1px solid var(--border);
}
#msg-input { flex: 1 1 auto; }