*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: var(--ds-font-body);
  background: var(--ds-surface-base);
  color: var(--ds-text-secondary);
}

a {
  color: inherit;
  text-decoration: none;
}

.ds-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--ds-space-2);
  min-height: 44px;
  padding: 0 var(--ds-space-4);
  border: 1px solid var(--ds-border-default);
  border-radius: var(--ds-radius-full);
  font: inherit;
  font-size: var(--ds-body-sm-size);
  font-weight: 600;
  cursor: pointer;
  transition: background var(--ds-motion-base), border-color var(--ds-motion-fast), color var(--ds-motion-fast), transform var(--ds-motion-fast);
}

.ds-button:hover {
  border-color: var(--ds-border-hover);
}

.ds-button:active {
  transform: translateY(1px);
}

.ds-button-primary {
  background: var(--ds-action-primary-bg);
  color: var(--ds-action-primary-fg);
  border-color: var(--ds-action-primary-bg);
}

.ds-button-primary:hover {
  background: var(--ds-action-primary-hover);
  border-color: var(--ds-action-primary-hover);
}

.ds-button-secondary,
.ds-button-ghost {
  background: var(--ds-action-subtle-bg);
  color: var(--ds-action-subtle-fg);
}

.ds-card {
  background: var(--ds-surface-secondary);
  border: 1px solid var(--ds-border-default);
  border-radius: var(--ds-radius-lg);
}

.ds-artifact-list {
  display: flex;
  flex-direction: column;
  gap: var(--ds-space-3);
}

.ds-artifact {
  display: flex;
  flex-direction: column;
  gap: var(--ds-space-3);
  padding: var(--ds-space-4);
}

.ds-artifact-main {
  display: flex;
  gap: var(--ds-space-3);
}

.ds-artifact-icon {
  width: 52px;
  height: 60px;
  flex-shrink: 0;
  border-radius: var(--ds-radius-md);
  border: 1px solid var(--ds-border-default);
  background: var(--ds-surface-tertiary);
}

.ds-artifact-title {
  color: var(--ds-text-primary);
  font-size: var(--ds-title-md-size);
  font-weight: 600;
  line-height: 1.2;
  margin: 0 0 var(--ds-space-1);
}

.ds-artifact-meta {
  color: var(--ds-text-secondary);
  font-size: var(--ds-body-sm-size);
  line-height: 1.5;
}

.ds-artifact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--ds-space-2);
}

.ds-chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--ds-space-2);
}

.ds-chip {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 0 var(--ds-space-3);
  border-radius: var(--ds-radius-full);
  border: 1px solid var(--ds-border-default);
  background: var(--ds-surface-tertiary);
  color: var(--ds-text-secondary);
  font-family: var(--ds-font-mono);
  font-size: var(--ds-meta-sm-size);
}

.ds-chat {
  display: flex;
  flex-direction: column;
  gap: var(--ds-space-4);
  padding: var(--ds-space-4);
}

.ds-thread {
  display: flex;
  flex-direction: column;
  gap: var(--ds-space-3);
}

.ds-message {
  max-width: 60ch;
}

.ds-message-user {
  align-self: flex-end;
}

.ds-message-meta {
  margin-bottom: var(--ds-space-1);
  color: var(--ds-text-muted);
  font-family: var(--ds-font-mono);
  font-size: var(--ds-meta-sm-size);
}

.ds-bubble {
  border-radius: var(--ds-radius-md);
  padding: var(--ds-space-3) var(--ds-space-4);
  background: var(--ds-surface-tertiary);
  color: var(--ds-text-primary);
}

.ds-message-user .ds-bubble {
  background: var(--ds-action-primary-bg);
  color: var(--ds-action-primary-fg);
}

.ds-composer {
  display: flex;
  flex-direction: column;
  gap: var(--ds-space-3);
  padding: var(--ds-space-3);
  border: 1px solid var(--ds-border-default);
  border-radius: var(--ds-radius-lg);
  background: var(--ds-surface-base);
}

.ds-composer textarea {
  min-height: 96px;
  border: 0;
  resize: vertical;
  background: transparent;
  color: var(--ds-text-primary);
  font: inherit;
  outline: none;
}

.ds-composer textarea::placeholder {
  color: var(--ds-text-muted);
}

.ds-composer-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--ds-space-3);
  flex-wrap: wrap;
}

.ds-inline-actions {
  display: flex;
  align-items: center;
  gap: var(--ds-space-2);
}

@media (min-width: 900px) {
  .ds-artifact {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }

  .ds-artifact-actions {
    justify-content: flex-end;
    flex-shrink: 0;
  }
}