:root {
  color-scheme: light;
  --bg: #f4f5f2;
  --panel: #ffffff;
  --ink: #1d2524;
  --muted: #64706c;
  --line: #d9ded8;
  --accent: #236b5d;
  --danger: #9f2f2f;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  display: grid;
  grid-template-columns: 260px 1fr;
  min-height: 100vh;
  background: var(--bg);
  color: var(--ink);
  font: 15px/1.45 system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

aside {
  border-right: 1px solid var(--line);
  background: #263331;
  color: #f9fbf8;
  padding: 20px;
}

aside h1 {
  margin: 0 0 20px;
  font-size: 24px;
  letter-spacing: 0;
}

button, input, textarea {
  font: inherit;
}

button {
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--panel);
  color: var(--ink);
  padding: 8px 12px;
  cursor: pointer;
}

button:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.danger {
  color: var(--danger);
}

aside button {
  width: 100%;
  margin-bottom: 8px;
  text-align: left;
}

main {
  padding: 24px;
  max-width: 1200px;
  width: 100%;
}

.panel, #workspace {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 18px;
}

.hidden {
  display: none;
}

label {
  display: block;
  margin: 10px 0;
  color: var(--muted);
}

input, textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 9px 10px;
  margin-top: 4px;
  background: #fff;
}

textarea {
  min-height: 90px;
  resize: vertical;
}

.project-header {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: start;
}

.project-header h2 {
  margin: 0;
}

.project-header p {
  color: var(--muted);
  margin: 4px 0 0;
}

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

.tabs {
  display: flex;
  gap: 6px;
  border-bottom: 1px solid var(--line);
  margin: 18px -18px 0;
  padding: 0 18px;
  overflow-x: auto;
}

.tabs button {
  border-bottom: 0;
  border-radius: 6px 6px 0 0;
}

.tabs .active {
  background: var(--accent);
  color: white;
}

.tab {
  padding-top: 18px;
}

.conversation-toolbar {
  display: grid;
  grid-template-columns: minmax(180px, 1fr) repeat(3, auto);
  gap: 8px;
  margin-bottom: 12px;
}

select {
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 8px 10px;
  background: #fff;
}

#messages {
  min-height: 48vh;
  max-height: 58vh;
  overflow-y: auto;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 14px;
  background: #fbfcfa;
}

.message {
  margin: 0 0 14px;
  padding: 10px 12px;
  border-left: 3px solid var(--line);
  white-space: pre-wrap;
}

.message.user {
  border-left-color: #476a9f;
}

.message.assistant {
  border-left-color: var(--accent);
}

.sources {
  color: var(--muted);
  font-size: 13px;
  margin-top: 8px;
}

#chat-form {
  display: grid;
  grid-template-columns: 1fr 120px;
  gap: 10px;
  margin-top: 12px;
}

.chat-actions {
  display: grid;
  gap: 8px;
  align-content: start;
}

.sources details {
  margin-top: 6px;
}

.sources summary {
  cursor: pointer;
}

.sources pre {
  margin: 6px 0 0;
  max-height: 240px;
  white-space: pre-wrap;
}

.row {
  border-bottom: 1px solid var(--line);
  padding: 10px 0;
}

.row-actions {
  display: flex;
  gap: 8px;
  margin-top: 8px;
}

.entity-form {
  display: grid;
  grid-template-columns: repeat(5, minmax(120px, 1fr));
  gap: 8px;
  align-items: start;
  margin-bottom: 14px;
}

.entity-form textarea {
  min-height: 44px;
}

.document-actions, .document-search {
  display: flex;
  gap: 8px;
  margin-bottom: 10px;
}

.document-search input {
  margin-top: 0;
}

.document-search {
  align-items: start;
}

.muted {
  color: var(--muted);
}

.git-actions, .git-diff-form {
  display: flex;
  gap: 8px;
  margin-bottom: 10px;
}

.git-diff-form input {
  margin-top: 0;
}

pre {
  overflow: auto;
  background: #202826;
  color: #f3f7f2;
  padding: 14px;
  border-radius: 8px;
}

.error {
  color: var(--danger);
}

@media (max-width: 800px) {
  body {
    grid-template-columns: 1fr;
  }

  aside {
    border-right: 0;
  }

  #chat-form {
    grid-template-columns: 1fr;
  }

  .conversation-toolbar {
    grid-template-columns: 1fr;
  }

  .entity-form {
    grid-template-columns: 1fr;
  }

  .document-actions, .document-search {
    display: grid;
    grid-template-columns: 1fr;
  }

  .git-actions, .git-diff-form {
    display: grid;
    grid-template-columns: 1fr;
  }
}