:root {
  --color-surface: #ffffff;
  --color-text: #0f172a;
  --color-primary: #1d4ed8;
  --color-border: #cbd5e1;
  --color-muted: #475569;
  --color-page: #f1f5f9;
  --color-primary-hover: #1e40af;
  --color-focus: #bfdbfe;
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-6: 1.5rem;
  --radius-card: 1rem;
  --radius-control: 0.5rem;
  --shadow-card: 0 1.25rem 2.5rem rgb(15 23 42 / 0.12);
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

body {
  min-height: 100vh;
  margin: 0;
  background: var(--color-page);
  color: var(--color-text);
  font-family: system-ui, sans-serif;
}

main {
  width: min(100% - 2rem, 64rem);
  margin: 0 auto;
  padding: 3rem 0;
}

body:has(app-card[variant="connection"]) main {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: var(--space-6) 0;
}

app-card {
  display: block;
  padding: var(--space-6);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  background: var(--color-surface);
  box-shadow: var(--shadow-card);
}

app-card[variant="connection"] {
  width: min(100%, 30rem);
}

app-card[variant="conversation"] {
  width: min(100%, 48rem);
}

app-conversation {
  display: grid;
  gap: var(--space-3);
}

app-message {
  display: block;
  padding: var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-control);
  background: var(--color-surface);
}

app-message[role="user"] {
  justify-self: end;
  border-color: var(--color-primary);
  background: var(--color-primary);
  color: var(--color-surface);
}

app-message[role="agent"] {
  justify-self: start;
  color: var(--color-text);
}

app-message > [data-app-message-author] {
  display: block;
  margin-bottom: var(--space-1);
  color: var(--color-muted);
  font-size: 0.875rem;
  font-weight: 600;
}

app-message[role="user"] > [data-app-message-author] {
  color: var(--color-surface);
}

app-message > p {
  margin: 0;
}

app-markdown {
  display: block;
}

app-markdown > :first-child {
  margin-top: 0;
}

app-markdown > :last-child {
  margin-bottom: 0;
}

app-markdown h1,
app-markdown h2 {
  margin: var(--space-3) 0 var(--space-2);
  line-height: 1.2;
}

app-markdown h1 {
  font-size: 1.25rem;
}

app-markdown h2 {
  font-size: 1.125rem;
}

app-markdown p,
app-markdown ul {
  margin: 0 0 var(--space-2);
}

app-markdown ul {
  padding-left: var(--space-6);
}

app-markdown code {
  padding: 0 var(--space-1);
  border-radius: var(--radius-control);
  background: var(--color-page);
}

app-markdown pre {
  overflow-x: auto;
  padding: var(--space-3);
  border-radius: var(--radius-control);
  background: var(--color-text);
  color: var(--color-surface);
}

app-markdown pre code {
  padding: 0;
  background: transparent;
}

app-markdown a {
  color: var(--color-primary);
}

app-status {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  margin: var(--space-2) 0;
  color: var(--color-muted);
}

app-status > [data-app-status-indicator] {
  width: 0.875rem;
  height: 0.875rem;
  border: 2px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
}

app-status[variant="loading"] > [data-app-status-indicator] {
  animation: app-status-spin 0.8s linear infinite;
}

app-notification {
  display: block;
  margin: var(--space-2) 0;
  padding: var(--space-3);
  border: 1px solid var(--color-primary);
  border-radius: var(--radius-control);
  background: color-mix(in srgb, var(--color-primary) 10%, var(--color-surface));
}

app-notification[variant="error"] {
  border-color: var(--color-text);
  background: color-mix(in srgb, var(--color-text) 10%, var(--color-surface));
}

app-notification > [data-app-notification-text],
app-trace p {
  margin: 0;
}

app-trace {
  display: block;
  margin: var(--space-2) 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-control);
  background: var(--color-surface);
}

app-trace > details {
  padding: var(--space-3);
}

app-trace summary {
  color: var(--color-primary);
  cursor: pointer;
  font-weight: 600;
}

app-trace [data-app-trace-content] {
  display: grid;
  gap: var(--space-2);
  margin-top: var(--space-3);
  color: var(--color-muted);
}

app-trace ul {
  display: grid;
  gap: var(--space-1);
  margin: 0;
  padding-left: var(--space-6);
}

@keyframes app-status-spin {
  to {
    transform: rotate(1turn);
  }
}

app-card > [data-app-card-heading] {
  margin: 0 0 var(--space-4);
  font-size: 1.5rem;
}

app-card[variant="connection"] > [data-app-card-heading] {
  font-size: 1.75rem;
  letter-spacing: -0.025em;
}

app-field {
  display: block;
  margin-bottom: var(--space-4);
}

app-field > label {
  display: block;
  margin-bottom: var(--space-2);
  color: var(--color-muted);
  font-size: 0.875rem;
  font-weight: 600;
}

app-field > input,
input {
  width: 100%;
  padding: var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-control);
  background: var(--color-surface);
  color: var(--color-text);
  font: inherit;
}

app-field > input:focus,
input:focus,
button:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--color-primary) 30%, transparent);
  outline-offset: 2px;
}

app-button {
  display: inline-block;
}

app-button > button,
button {
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--color-primary);
  border-radius: var(--radius-control);
  background: var(--color-primary);
  color: var(--color-surface);
  cursor: pointer;
  font: inherit;
  font-weight: 600;
}

app-button > button:hover {
  background: var(--color-primary-hover);
}

app-card[variant="connection"] app-button {
  display: block;
}

app-card[variant="connection"] app-button > button {
  width: 100%;
}

app-button[variant="secondary"] > button {
  background: var(--color-surface);
  color: var(--color-primary);
}

app-button[variant="secondary"] > button:hover {
  background: var(--color-page);
}

@media (max-width: 40rem) {
  main {
    width: min(100% - 1.5rem, 64rem);
  }

  app-card {
    padding: var(--space-4);
  }

}