/* Component layer: the v0 set.
 *
 * Every value comes from a semantic token. Class names describe a role
 * (.pas-button--primary), never a hue. If a colour here had to change to
 * rebrand, this file would be wrong — edit themes/*.tokens.json instead.
 */

/* --- button ----------------------------------------------------------- */

.pas-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--pas-space-50);
  min-height: var(--pas-size-control);
  padding: var(--pas-space-50) var(--pas-space-150);
  border: var(--pas-border-hairline) solid transparent;
  border-radius: var(--pas-radius-md);
  font-family: var(--pas-font-label-family);
  font-size: var(--pas-font-label-size);
  font-weight: var(--pas-font-label-weight);
  line-height: var(--pas-font-label-leading);
  letter-spacing: var(--pas-font-label-tracking);
  text-decoration: none;
  cursor: pointer;
  transition:
    background-color var(--pas-motion-fast) var(--pas-motion-easing),
    border-color var(--pas-motion-fast) var(--pas-motion-easing),
    color var(--pas-motion-fast) var(--pas-motion-easing);
}

.pas-button--primary {
  background-color: var(--pas-color-primary);
  color: var(--pas-color-on-primary);
  border-color: var(--pas-color-primary);
}

.pas-button--primary:hover {
  background-color: var(--pas-color-primary-hover);
  border-color: var(--pas-color-primary-hover);
  color: var(--pas-color-on-primary);
}

.pas-button--secondary {
  background-color: transparent;
  color: var(--pas-color-on-surface);
  border-color: var(--pas-color-outline);
}

.pas-button--secondary:hover {
  background-color: var(--pas-color-surface-container);
  border-color: var(--pas-color-on-surface-muted);
}

/* Text treatment: reads as a link, keeps button hit area. */
.pas-button--text {
  background-color: transparent;
  color: var(--pas-color-primary);
  border-color: transparent;
  padding-inline: var(--pas-space-50);
  text-decoration: underline;
  text-underline-offset: 0.2em;
}

.pas-button--text:hover {
  background-color: var(--pas-color-surface-container);
}

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

.pas-button:focus-visible {
  outline: var(--pas-border-strong) solid var(--pas-color-focus);
  outline-offset: 2px;
}

.pas-button[disabled],
.pas-button[aria-disabled='true'] {
  background-color: var(--pas-color-surface-container);
  color: var(--pas-color-on-surface-muted);
  border-color: var(--pas-color-outline);
  cursor: not-allowed;
  transform: none;
  text-decoration: none;
}

.pas-button--compact {
  min-height: var(--pas-size-control-compact);
  padding-block: var(--pas-space-25);
}

/* --- form fields ------------------------------------------------------ */

.pas-field {
  display: flex;
  flex-direction: column;
  gap: var(--pas-space-50);
  margin-bottom: var(--pas-space-stack-loose);
}

.pas-field__label {
  font-family: var(--pas-font-label-family);
  font-size: var(--pas-font-label-size);
  font-weight: var(--pas-font-label-weight);
  line-height: var(--pas-font-label-leading);
  letter-spacing: var(--pas-font-label-tracking);
  color: var(--pas-color-on-surface);
}

.pas-field__required {
  color: var(--pas-color-on-surface-muted);
  font-weight: var(--pas-font-body-weight);
}

.pas-input,
.pas-textarea,
.pas-select {
  width: 100%;
  min-height: var(--pas-size-control);
  padding: var(--pas-space-50) var(--pas-space-75);
  background-color: var(--pas-color-surface);
  color: var(--pas-color-on-surface);
  border: var(--pas-border-hairline) solid var(--pas-color-outline);
  border-radius: var(--pas-radius-md);
  font-family: var(--pas-font-body-family);
  font-size: var(--pas-font-body-size);
  line-height: var(--pas-font-body-leading);
  transition: border-color var(--pas-motion-fast) var(--pas-motion-easing);
}

.pas-textarea {
  min-height: 6rem;
  resize: vertical;
}

.pas-select {
  /* Native select keeps its platform affordance; only the frame is ours. */
  appearance: auto;
}

.pas-input:hover,
.pas-textarea:hover,
.pas-select:hover {
  border-color: var(--pas-color-on-surface-muted);
}

.pas-input:focus-visible,
.pas-textarea:focus-visible,
.pas-select:focus-visible {
  outline: var(--pas-border-strong) solid var(--pas-color-focus);
  outline-offset: 1px;
  border-color: var(--pas-color-primary);
}

.pas-input[disabled],
.pas-textarea[disabled],
.pas-select[disabled] {
  background-color: var(--pas-color-surface-container);
  color: var(--pas-color-on-surface-muted);
  cursor: not-allowed;
}

.pas-input[aria-invalid='true'],
.pas-textarea[aria-invalid='true'],
.pas-select[aria-invalid='true'] {
  border-color: var(--pas-color-error);
  border-width: var(--pas-border-strong);
}

.pas-field__help {
  font-size: var(--pas-font-small-size);
  line-height: var(--pas-font-small-leading);
  color: var(--pas-color-on-surface-muted);
}

.pas-field__error {
  font-size: var(--pas-font-small-size);
  line-height: var(--pas-font-small-leading);
  color: var(--pas-color-error);
  font-weight: var(--pas-font-label-weight);
}

/* --- checkbox and radio ---------------------------------------------- */

.pas-check {
  display: flex;
  align-items: flex-start;
  gap: var(--pas-space-50);
  margin-bottom: var(--pas-space-50);
}

.pas-check input[type='checkbox'],
.pas-check input[type='radio'] {
  /* Native control, tinted from the token layer. */
  accent-color: var(--pas-color-primary);
  width: var(--pas-size-icon);
  height: var(--pas-size-icon);
  margin: 0.15rem 0 0;
  flex: none;
}

.pas-check input:focus-visible {
  outline: var(--pas-border-strong) solid var(--pas-color-focus);
  outline-offset: 2px;
}

.pas-check__label {
  font-size: var(--pas-font-body-size);
  line-height: var(--pas-font-small-leading);
}

.pas-check--disabled {
  color: var(--pas-color-on-surface-muted);
}

/* --- badge ------------------------------------------------------------ */

.pas-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--pas-space-25);
  padding: var(--pas-space-25) var(--pas-space-50);
  border: var(--pas-border-hairline) solid var(--pas-color-outline);
  border-radius: var(--pas-radius-sm);
  font-family: var(--pas-font-label-family);
  font-size: var(--pas-font-label-size);
  font-weight: var(--pas-font-label-weight);
  line-height: var(--pas-font-label-leading);
  letter-spacing: var(--pas-font-label-tracking);
  color: var(--pas-color-on-surface-muted);
  background-color: var(--pas-color-surface-container);
  white-space: nowrap;
}

.pas-badge--accent {
  background-color: var(--pas-color-primary-container);
  color: var(--pas-color-on-primary-container);
  border-color: var(--pas-color-primary-container);
}

.pas-badge--positive {
  background-color: transparent;
  color: var(--pas-color-tertiary);
  border-color: var(--pas-color-tertiary);
}

.pas-badge--attention {
  background-color: transparent;
  color: var(--pas-color-error);
  border-color: var(--pas-color-error);
}

/* --- alert ------------------------------------------------------------ */

.pas-alert {
  display: flex;
  flex-direction: column;
  gap: var(--pas-space-25);
  padding: var(--pas-space-inset);
  border: var(--pas-border-hairline) solid var(--pas-color-outline);
  border-left-width: var(--pas-border-strong);
  border-radius: var(--pas-radius-md);
  background-color: var(--pas-color-surface-container);
  color: var(--pas-color-on-surface);
}

.pas-alert__title {
  font-family: var(--pas-font-label-family);
  font-size: var(--pas-font-label-size);
  font-weight: var(--pas-font-label-weight);
  letter-spacing: var(--pas-font-label-tracking);
}

.pas-alert--positive {
  border-color: var(--pas-color-tertiary);
}

.pas-alert--attention {
  border-color: var(--pas-color-error);
}

.pas-alert--attention .pas-alert__title {
  color: var(--pas-color-error);
}

.pas-alert--info {
  border-color: var(--pas-color-primary);
}

/* --- navigation ------------------------------------------------------- */

.pas-nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--pas-space-stack);
}

.pas-nav__link {
  display: inline-block;
  padding: var(--pas-space-25) var(--pas-space-50);
  border-radius: var(--pas-radius-sm);
  color: var(--pas-color-on-surface-muted);
  font-family: var(--pas-font-label-family);
  font-size: var(--pas-font-label-size);
  font-weight: var(--pas-font-label-weight);
  letter-spacing: var(--pas-font-label-tracking);
  text-decoration: none;
}

.pas-nav__link:hover {
  background-color: var(--pas-color-surface-container);
  color: var(--pas-color-on-surface);
}

.pas-nav__link[aria-current='page'] {
  color: var(--pas-color-on-surface);
  text-decoration: underline;
  text-decoration-thickness: var(--pas-border-strong);
  text-underline-offset: 0.3em;
}

/* --- table ------------------------------------------------------------ */

.pas-table-wrap {
  overflow-x: auto;
  border: var(--pas-border-hairline) solid var(--pas-color-outline);
  border-radius: var(--pas-radius-lg);
}

.pas-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--pas-font-small-size);
  line-height: var(--pas-font-small-leading);
}

.pas-table caption {
  padding: var(--pas-space-50) var(--pas-space-75);
  text-align: left;
  color: var(--pas-color-on-surface-muted);
  font-size: var(--pas-font-small-size);
}

.pas-table th,
.pas-table td {
  padding: var(--pas-space-50) var(--pas-space-75);
  text-align: left;
  vertical-align: top;
  border-bottom: var(--pas-border-hairline) solid var(--pas-color-outline);
}

.pas-table thead th {
  background-color: var(--pas-color-surface-container);
  color: var(--pas-color-on-surface);
  font-family: var(--pas-font-label-family);
  font-size: var(--pas-font-label-size);
  letter-spacing: var(--pas-font-label-tracking);
  white-space: nowrap;
}

.pas-table tbody tr:last-child th,
.pas-table tbody tr:last-child td {
  border-bottom: 0;
}

.pas-table tbody th {
  font-weight: var(--pas-font-label-weight);
}

/* --- card ------------------------------------------------------------- */

.pas-card {
  display: flex;
  flex-direction: column;
  gap: var(--pas-space-stack);
  padding: var(--pas-space-inset-loose);
  background-color: var(--pas-color-surface);
  border: var(--pas-border-hairline) solid var(--pas-color-outline);
  /* Repeated items stay at 8px or less: past that it reads as a decoration. */
  border-radius: var(--pas-radius-lg);
}

.pas-card__title {
  margin: 0;
  font-family: var(--pas-font-heading-3-family);
  font-size: var(--pas-font-heading-3-size);
  font-weight: var(--pas-font-heading-3-weight);
  line-height: var(--pas-font-heading-3-leading);
}

.pas-card__meta {
  color: var(--pas-color-on-surface-muted);
  font-size: var(--pas-font-small-size);
  line-height: var(--pas-font-small-leading);
  margin: 0;
}

.pas-card > p:last-child,
.pas-card > ul:last-child {
  margin-bottom: 0;
}

/* --- layout utilities ------------------------------------------------- */

.pas-grid {
  display: grid;
  gap: var(--pas-space-stack-loose);
  grid-template-columns: repeat(auto-fit, minmax(min(18rem, 100%), 1fr));
}

.pas-split {
  display: grid;
  gap: var(--pas-space-stack-loose);
}

@media (min-width: 48rem) {
  .pas-split {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
    align-items: start;
  }
}