:root {
  color-scheme: light;
  font-family: Inter, system-ui, sans-serif;
  background: #f4f1ea;
  color: #27231f;
}

body {
  margin: 0;
}

main {
  width: 100%;
  box-sizing: border-box;
  padding: 20px 24px;
}

h1, h2 {
  margin-top: 0;
}

h1 {
  margin-bottom: 6px;
  font-size: 1.75rem;
}

h2 {
  margin-bottom: 8px;
}

h3 {
  margin: 4px 0 14px;
}

header p {
  margin: 4px 0;
}

.eyebrow {
  color: #876f4c;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.panel {
  padding: 18px;
  border: 1px solid #ded5c6;
  border-radius: 16px;
  background: #fffdf8;
  box-shadow: 0 8px 26px rgb(57 44 24 / 8%);
}

.workspace {
  display: grid;
  grid-template-columns: minmax(480px, 1.1fr) minmax(360px, 0.9fr);
  gap: 24px;
  height: calc(100vh - 116px);
  margin-top: 16px;
}

.chat-panel {
  display: flex;
  min-height: 0;
  flex-direction: column;
}

form {
  display: flex;
  align-items: end;
  gap: 12px;
}

label {
  display: grid;
  gap: 6px;
  font-size: 0.85rem;
}

input, button {
  padding: 10px 12px;
  border: 1px solid #c9bead;
  border-radius: 8px;
  font: inherit;
}

input {
  min-width: 0;
  background: white;
}

button {
  cursor: pointer;
  border-color: #493d2d;
  background: #493d2d;
  color: white;
}

.messages {
  flex: 1;
  min-height: 0;
  margin-bottom: 16px;
  padding: 12px;
  overflow-y: auto;
  border: 1px solid #ded5c6;
  border-radius: 8px;
  background: white;
}

.messages p {
  max-width: 80%;
  padding: 8px 10px;
  border-radius: 8px;
  white-space: pre-wrap;
}

.user {
  margin-left: auto;
  background: #e8dfcf;
}

.assistant {
  background: #f2eee7;
}

.tool {
  max-width: 92%;
  margin: 8px 0;
  padding: 8px 10px;
  border: 1px solid #d7e3d9;
  border-radius: 8px;
  background: #f6fbf7;
  color: #42604b;
  font-family: ui-monospace, monospace;
  font-size: 0.8rem;
}

.tool summary {
  cursor: pointer;
  font-family: Inter, system-ui, sans-serif;
  font-weight: 700;
}

.tool pre {
  margin: 10px 0 0;
  overflow-x: auto;
  white-space: pre-wrap;
}

.error {
  color: #a32929;
}

#chat-input {
  flex: 1;
}

.hint {
  color: #766b5b;
  font-size: 0.8rem;
}

.ui-events {
  display: grid;
  gap: 14px;
}

.preview-panel {
  overflow-y: auto;
}

.empty-state {
  color: #766b5b;
}

.invoice-card {
  padding: 16px;
  border: 1px solid #ded5c6;
  border-radius: 10px;
  background: white;
}

.invoice-card.preview {
  border-color: #c8a45d;
}

.invoice-card.created {
  border-color: #6c9a76;
}

dl {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 6px 14px;
  margin: 0;
}

dt {
  color: #766b5b;
}

dd {
  margin: 0;
}

.table-wrap {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
  text-align: left;
}

th, td {
  padding: 8px;
  border-bottom: 1px solid #eee8dd;
}

@media (max-width: 980px) {
  main {
    padding: 20px;
  }

  .workspace {
    grid-template-columns: 1fr;
    height: auto;
  }

  .messages {
    height: 360px;
    flex: none;
  }

  .preview-panel {
    max-height: none;
  }
}

@media (max-width: 600px) {
  form {
    align-items: stretch;
    flex-direction: column;
  }
}