:root {
  color-scheme: light;
  font-family: Arial, Helvetica, sans-serif;
  font-size: 14px;
}

body {
  margin: 0;
  background: #f2f3f7;
  color: #111827;
  min-height: 100vh;
}

.shell {
  max-width: 1400px;
  min-height: 100vh;
  margin: 0 auto;
  padding: 16px;
  display: grid;
  grid-template-columns: 320px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
}

.panel {
  background: #ffffff;
  border: 1px solid #d1d5db;
  border-radius: 8px;
  padding: 12px;
}

.sidebar {
  position: sticky;
  top: 16px;
}

.chat-area {
  display: grid;
  gap: 12px;
  min-height: calc(100vh - 32px);
}

.section + .section {
  margin-top: 12px;
}

.row {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
  margin: 6px 0;
}

label {
  display: grid;
  gap: 4px;
  font-size: 13px;
  color: #374151;
}

input[type="text"],
select,
textarea {
  min-width: 220px;
  border: 1px solid #9ca3af;
  border-radius: 6px;
  padding: 7px 8px;
}

textarea {
  width: 100%;
  resize: vertical;
}

button {
  min-height: 34px;
}

.button {
  border: 1px solid #9ca3af;
  background: #ffffff;
  border-radius: 6px;
  color: #111827;
  padding: 8px 12px;
}

.button-primary {
  background: #111827;
  color: #ffffff;
  border-color: #111827;
}

.button-danger {
  background: #b91c1c;
  color: #ffffff;
  border-color: #b91c1c;
}

.status {
  font-size: 12px;
  color: #4b5563;
  margin-top: 6px;
}

.chat-panel {
  display: grid;
  gap: 10px;
}

.messages {
  min-height: 320px;
  max-height: 64vh;
  border: 1px solid #d1d5db;
  border-radius: 8px;
  padding: 10px;
  background: #fafafa;
  overflow: auto;
}

.message {
  margin-bottom: 10px;
  padding: 8px;
  border-radius: 6px;
  border: 1px solid #e5e7eb;
}

.message.user {
  border-left: 3px solid #2563eb;
  background: #eff6ff;
}

.message.assistant {
  border-left: 3px solid #059669;
  background: #ecfdf5;
}

.message.system {
  border-left: 3px solid #d97706;
  background: #fffbeb;
}

.message .meta {
  font-size: 11px;
  color: #6b7280;
  margin-bottom: 6px;
}

.mono {
  white-space: pre-wrap;
  overflow: auto;
  max-height: 220px;
  background: #0f172a;
  color: #f8fafc;
  padding: 10px;
  border-radius: 6px;
}

.composer {
  display: grid;
  gap: 8px;
}

.composer-actions {
  display: flex;
  gap: 8px;
}

.chat-panel {
  display: flex;
  min-height: 0;
  align-items: stretch;
}

.inline-toggle {
  display: flex;
  flex-direction: row;
  align-items: center;
}

.journal {
  margin-top: 8px;
  border: 1px dashed #d1d5db;
  border-radius: 6px;
  padding: 6px 8px;
  background: #f8fafc;
}

.journal > summary {
  cursor: pointer;
  font-size: 12px;
  color: #4b5563;
  margin-bottom: 6px;
}

.journal-title {
  margin-top: 8px;
  font-size: 11px;
  color: #374151;
  font-weight: 600;
}

select,
input[type="text"] {
  width: 100%;
}

@media (max-width: 1024px) {
  .shell {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: static;
  }

  .chat-area {
    min-height: auto;
  }
}