* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: #0f172a;
  color: #e2e8f0;
}

.layout {
  display: grid;
  grid-template-columns: 320px 1fr 340px;
  gap: 12px;
  min-height: 100vh;
  padding: 12px;
}

.panel {
  border: 1px solid #334155;
  border-radius: 10px;
  background: #111827;
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.chat-panel {
  min-width: 0;
}

.stack {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.tabs {
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
}

.tab-btn {
  text-align: left;
}

.tab-btn.active {
  border-color: #22d3ee;
}

.row {
  flex-direction: row;
}

.actions-row {
  gap: 8px;
}

input,
textarea,
button {
  border: 1px solid #475569;
  border-radius: 8px;
  padding: 10px;
  background: #1e293b;
  color: #f8fafc;
}

button {
  cursor: pointer;
}

button:hover {
  background: #334155;
}

.chats-list {
  overflow: auto;
  max-height: calc(100vh - 230px);
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.chat-item {
  border: 1px solid #334155;
  border-radius: 8px;
  padding: 8px;
  cursor: pointer;
}

.chat-item-head {
  display: flex;
  align-items: center;
  gap: 8px;
}

.chat-item-head input[type="checkbox"] {
  width: 16px;
  height: 16px;
}

.chat-item.active {
  border-color: #22d3ee;
}

.messages {
  flex: 1;
  min-height: 300px;
  overflow: auto;
  display: flex;
  flex-direction: column;
  gap: 8px;
  border: 1px solid #334155;
  border-radius: 10px;
  padding: 8px;
}

.message {
  border: 1px solid #334155;
  border-radius: 8px;
  padding: 8px;
}

.message.outbound {
  border-color: #16a34a;
}

.message.inbound {
  border-color: #0ea5e9;
}

.muted {
  color: #94a3b8;
  font-size: 13px;
}

.status {
  white-space: pre-wrap;
  background: #020617;
  border: 1px solid #334155;
  border-radius: 8px;
  padding: 10px;
  min-height: 120px;
}

.recipient-list {
  border: 1px solid #334155;
  border-radius: 8px;
  padding: 8px;
  max-height: 220px;
  overflow: auto;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.recipient-item {
  display: flex;
  align-items: center;
  gap: 8px;
}