/**
 * Navorina design-system primitives.
 *
 * Public contracts use the `nv-` prefix so landing, Dashboard, Nucleus and
 * tool pages can share behavior without coupling their feature selectors.
 */

/* Actions ----------------------------------------------------------------- */
.nv-button,
.nv-icon-button {
  box-sizing: border-box;
  border: var(--component-border-width) solid transparent;
  border-radius: var(--button-radius);
  font-family: var(--font-primary);
  font-weight: var(--font-weight-semibold);
  line-height: 1;
  text-decoration: none;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  transition-property: background-color, border-color, color, opacity, box-shadow, transform;
  transition-duration: var(--transition-fast);
  transition-timing-function: ease-out;
}

.nv-button {
  display: inline-flex;
  min-block-size: var(--button-height-md);
  padding-inline: var(--button-padding-md);
  align-items: center;
  justify-content: center;
  gap: var(--button-gap);
  white-space: nowrap;
  font-size: var(--font-size-md);
}

.nv-button--sm {
  min-block-size: var(--button-height-sm);
  padding-inline: var(--button-padding-sm);
  font-size: var(--font-size-sm);
}

.nv-button--lg {
  min-block-size: var(--button-height-lg);
  padding-inline: var(--button-padding-lg);
  font-size: var(--font-size-lg);
}

.nv-button--block {
  inline-size: 100%;
}

.nv-button--primary {
  border-color: var(--color-button-primary);
  background: var(--color-button-primary);
  color: var(--color-button-primary-text);
}

.nv-button--primary:hover:not(:disabled):not([aria-disabled="true"]) {
  border-color: var(--color-button-primary-hover);
  background: var(--color-button-primary-hover);
  color: var(--color-button-primary-text);
}

.nv-button--secondary {
  border-color: transparent;
  background: var(--color-button-secondary);
  color: var(--color-text-primary);
}

.nv-button--secondary:hover:not(:disabled):not([aria-disabled="true"]) {
  border-color: transparent;
  background: var(--color-button-secondary-hover);
}

.nv-button--ghost {
  border-color: transparent;
  background: transparent;
  color: var(--color-text-secondary);
}

.nv-button--ghost:hover:not(:disabled):not([aria-disabled="true"]) {
  background: var(--color-button-secondary);
  color: var(--color-text-primary);
}

.nv-button--danger {
  border-color: var(--color-border-error);
  background: transparent;
  color: var(--color-error);
}

.nv-button--danger:hover:not(:disabled):not([aria-disabled="true"]) {
  border-color: var(--color-error);
  background: var(--color-error-soft);
}

.nv-button:active:not(:disabled):not([aria-disabled="true"]),
.nv-icon-button:active:not(:disabled):not([aria-disabled="true"]),
.nv-action-tile:active:not(:disabled):not([aria-disabled="true"]) {
  transform: scale(var(--button-press-scale));
}

.nv-button:focus-visible,
.nv-icon-button:focus-visible,
.nv-action-tile:focus-visible {
  outline: var(--button-focus-width) solid var(--color-button-primary-focus);
  outline-offset: var(--button-focus-offset);
}

.nv-button:is(:disabled, [aria-disabled="true"]),
.nv-icon-button:is(:disabled, [aria-disabled="true"]),
.nv-action-tile:is(:disabled, [aria-disabled="true"]) {
  opacity: var(--button-disabled-opacity);
  cursor: not-allowed;
}

.nv-button[aria-busy="true"],
.nv-button.is-loading {
  cursor: wait;
}

.nv-button[aria-busy="true"]::after,
.nv-button.is-loading::after,
.nv-button__spinner {
  box-sizing: border-box;
  inline-size: var(--button-spinner-size);
  block-size: var(--button-spinner-size);
  flex: 0 0 auto;
  border: var(--button-spinner-stroke) solid currentColor;
  border-inline-end-color: transparent;
  border-radius: var(--radius-circle);
  animation: nv-spin 0.7s linear infinite;
}

.nv-button[aria-busy="true"]::after,
.nv-button.is-loading::after {
  content: "";
}

.nv-button__icon,
.nv-button > svg {
  inline-size: var(--button-icon-size);
  block-size: var(--button-icon-size);
  flex: 0 0 auto;
  stroke-width: 2;
}

.nv-icon-button {
  display: inline-grid;
  inline-size: var(--button-height-md);
  min-inline-size: var(--button-height-md);
  block-size: var(--button-height-md);
  min-block-size: var(--button-height-md);
  padding: 0;
  place-items: center;
  border-color: transparent;
  background: var(--color-button-secondary);
  color: var(--color-text-secondary);
}

.nv-icon-button:hover:not(:disabled):not([aria-disabled="true"]) {
  border-color: transparent;
  background: var(--color-button-secondary-hover);
  color: var(--color-text-primary);
}

.nv-icon-button--sm {
  inline-size: var(--button-height-sm);
  min-inline-size: var(--button-height-sm);
  block-size: var(--button-height-sm);
  min-block-size: var(--button-height-sm);
}

.nv-icon-button--lg {
  inline-size: var(--button-height-lg);
  min-inline-size: var(--button-height-lg);
  block-size: var(--button-height-lg);
  min-block-size: var(--button-height-lg);
}

.nv-button-group {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--spacing-md);
}

.nv-button-group--end {
  justify-content: flex-end;
}

/* Action tiles ------------------------------------------------------------ */
.nv-action-tile {
  display: flex;
  min-block-size: calc(var(--button-height-lg) + var(--spacing-2xl));
  padding: var(--component-padding-md);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  border: var(--component-border);
  border-radius: var(--component-radius-md);
  background: var(--color-surface-muted);
  color: var(--color-text-secondary);
  font: inherit;
  font-weight: var(--font-weight-medium);
  text-align: center;
  cursor: pointer;
  transition-property: background-color, border-color, color, transform;
  transition-duration: var(--transition-fast);
  transition-timing-function: ease-out;
}

.nv-action-tile:hover:not(:disabled):not([aria-disabled="true"]) {
  border-color: var(--color-border-hover);
  background: var(--color-surface-muted-hover);
  color: var(--color-text-primary);
}

/* Surfaces and feedback --------------------------------------------------- */
.nv-card {
  padding: var(--component-padding-lg);
  border: var(--component-border);
  border-radius: var(--component-radius-lg);
  background: var(--nv-surface-solid);
  color: var(--color-text-primary);
}

.nv-card--muted {
  background: var(--color-surface-muted);
}

.nv-card--interactive {
  color: inherit;
  text-decoration: none;
  transition-property: background-color, border-color, transform;
  transition-duration: var(--transition-fast);
  transition-timing-function: ease-out;
}

.nv-card--interactive:hover {
  border-color: var(--color-border-hover);
  background: var(--color-surface-muted-hover);
}

.nv-card--interactive:focus-visible {
  outline: var(--button-focus-width) solid var(--color-button-primary-focus);
  outline-offset: var(--button-focus-offset);
}

.nv-badge {
  display: inline-flex;
  min-block-size: var(--spacing-3xl);
  padding-inline: var(--spacing-md);
  align-items: center;
  gap: var(--spacing-xs);
  border-radius: var(--radius-full);
  background: var(--color-neutral-soft);
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  line-height: 1;
  white-space: nowrap;
}

.nv-badge::before {
  content: "";
  inline-size: var(--spacing-sm);
  block-size: var(--spacing-sm);
  border-radius: var(--radius-circle);
  background: currentColor;
}

.nv-badge--success { background: var(--color-success-soft); color: var(--color-success); }
.nv-badge--warning { background: var(--color-warning-soft); color: var(--color-warning); }
.nv-badge--error { background: var(--color-error-soft); color: var(--color-error); }
.nv-badge--info { background: var(--color-info-soft); color: var(--color-info); }

.nv-callout {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--spacing-md);
  padding: var(--component-padding-md);
  border: var(--component-border);
  border-radius: var(--component-radius-md);
  background: var(--color-surface-muted);
  color: var(--color-text-secondary);
}

.nv-callout--info { border-color: color-mix(in srgb, var(--color-info) 28%, transparent); background: var(--color-info-soft); }
.nv-callout--success { border-color: color-mix(in srgb, var(--color-success) 28%, transparent); background: var(--color-success-soft); }
.nv-callout--warning { border-color: color-mix(in srgb, var(--color-warning) 28%, transparent); background: var(--color-warning-soft); }
.nv-callout--error { border-color: var(--color-border-error); background: var(--color-error-soft); }

.nv-empty-state {
  display: grid;
  min-block-size: 12rem;
  padding: var(--spacing-4xl);
  place-items: center;
  align-content: center;
  gap: var(--spacing-md);
  border: var(--component-border);
  border-radius: var(--component-radius-lg);
  background: var(--color-surface-muted);
  color: var(--color-text-secondary);
  text-align: center;
}

.nv-empty-state > :is(h2, h3, p) {
  margin: 0;
}

.nv-empty-state > :is(h2, h3) {
  color: var(--color-text-primary);
  text-wrap: balance;
}

.nv-empty-state > p {
  max-inline-size: 52ch;
  line-height: var(--line-height-relaxed);
  text-wrap: pretty;
}

.nv-skeleton {
  min-block-size: var(--spacing-lg);
  border-radius: var(--component-radius-sm);
  background: var(--color-surface-muted);
  animation: nv-skeleton-pulse 1.6s ease-in-out infinite;
}

.nv-divider {
  inline-size: 100%;
  block-size: 1px;
  border: 0;
  background: var(--color-border-secondary);
}

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

@keyframes nv-skeleton-pulse {
  50% { background: var(--color-surface-muted-hover); }
}

@media (pointer: coarse) {
  .nv-button:not(.nv-button--sm),
  .nv-icon-button:not(.nv-icon-button--sm) {
    min-block-size: var(--button-height-lg);
  }

  .nv-icon-button:not(.nv-icon-button--sm) {
    inline-size: var(--button-height-lg);
    min-inline-size: var(--button-height-lg);
  }
}

@media (prefers-reduced-motion: reduce) {
  .nv-button,
  .nv-icon-button,
  .nv-action-tile,
  .nv-card--interactive {
    transition-duration: 0.01ms;
  }

  .nv-button:active:not(:disabled),
  .nv-icon-button:active:not(:disabled),
  .nv-action-tile:active:not(:disabled) {
    transform: none;
  }

  .nv-button[aria-busy="true"]::after,
  .nv-button.is-loading::after,
  .nv-button__spinner {
    animation-duration: 1.4s;
  }

  .nv-skeleton {
    animation: none;
  }
}

@media (prefers-contrast: more) {
  .nv-button,
  .nv-icon-button,
  .nv-action-tile,
  .nv-card,
  .nv-callout,
  .nv-empty-state {
    border-color: var(--color-border-primary);
  }

  .nv-button:focus-visible,
  .nv-icon-button:focus-visible,
  .nv-action-tile:focus-visible,
  .nv-card--interactive:focus-visible {
    outline-width: max(3px, var(--button-focus-width));
  }
}

@media (forced-colors: active) {
  .nv-button,
  .nv-icon-button,
  .nv-action-tile,
  .nv-card,
  .nv-callout,
  .nv-empty-state {
    border: var(--component-border-width) solid ButtonText;
  }

  .nv-button:focus-visible,
  .nv-icon-button:focus-visible,
  .nv-action-tile:focus-visible,
  .nv-card--interactive:focus-visible {
    outline-color: Highlight;
  }
}