/* ==========================================================================
   Tile — Carbon "clickable tile" used for service cards
   ========================================================================== */

.tile {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 18rem;
  padding: var(--cds-spacing-05);
  background: var(--cds-layer);
  color: var(--cds-text-primary);
  border-radius: var(--cds-radius);
  overflow: hidden;
  transition:
    background var(--cds-duration-fast) var(--cds-ease-productive),
    transform var(--cds-duration-moderate) var(--cds-ease-expressive),
    box-shadow var(--cds-duration-moderate) var(--cds-ease-expressive);
}

/* Animated accent keyline along the top edge, revealed on hover. */
.tile--clickable::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: var(--cds-interactive);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--cds-duration-moderate) var(--cds-ease-expressive);
}

.tile--clickable {
  cursor: pointer;
  text-decoration: none;
}

.tile--clickable:hover {
  background: var(--cds-layer-hover);
  color: var(--cds-text-primary);
  text-decoration: none;
  transform: translateY(-3px);
  box-shadow: 0 0.75rem 1.5rem rgba(0, 0, 0, 0.1);
}

.tile--clickable:hover::before {
  transform: scaleX(1);
}

@media (prefers-reduced-motion: reduce) {
  .tile,
  .tile--clickable::before {
    transition: none;
  }
  .tile--clickable:hover {
    transform: none;
  }
}

.tile--clickable:focus-visible {
  outline: 2px solid var(--cds-focus);
  outline-offset: -2px;
}

.tile__header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--cds-spacing-03);
  margin-bottom: var(--cds-spacing-06);
}

.tile__meta {
  display: inline-flex;
  align-items: center;
  gap: var(--cds-spacing-03);
  flex-shrink: 0;
}

/* "NEW" badge: a topic has recently added content. */
.tile__new {
  display: inline-flex;
  align-items: center;
  padding: 0.125rem 0.375rem;
  font-size: 0.625rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--cds-text-on-color, #fff);
  background: var(--cds-interactive);
}

.tile__icon {
  width: 2rem;
  height: 2rem;
  color: var(--cds-interactive);
}

.tile__category {
  color: var(--cds-text-secondary);
  margin-bottom: var(--cds-spacing-02);
}

.tile__title {
  font-size: 1.25rem;
  line-height: 1.75rem;
  font-weight: 400;
  margin-bottom: var(--cds-spacing-03);
}

.tile__description {
  color: var(--cds-text-secondary);
  font-size: 0.875rem;
  line-height: 1.25rem;
  letter-spacing: 0.01em;
}

.tile__footer {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--cds-spacing-03);
  margin-top: auto;
  padding-top: var(--cds-spacing-06);
}

.tile__url {
  font-family: var(--cds-font-mono);
  font-size: 0.75rem;
  color: var(--cds-text-helper);
  word-break: break-all;
}

.tile__arrow {
  flex-shrink: 0;
  width: 1.25rem;
  height: 1.25rem;
  color: var(--cds-link-primary);
  transition: transform var(--cds-duration-moderate) var(--cds-ease-expressive);
}

.tile--clickable:hover .tile__arrow {
  transform: translateX(var(--cds-spacing-02));
}

/* Placeholder tile reserved for upcoming services */
.tile--placeholder {
  background: var(--cds-background-alt);
  color: var(--cds-text-placeholder);
  justify-content: center;
  align-items: center;
  text-align: center;
  outline: 1px dashed var(--cds-border-strong);
  outline-offset: -0.5rem;
}

.tile--placeholder .tile__icon {
  color: var(--cds-text-placeholder);
  margin-bottom: var(--cds-spacing-04);
}

.tile--placeholder .tile__title {
  font-size: 0.875rem;
  color: var(--cds-text-secondary);
  margin: 0;
}

.tile--placeholder .tile__description {
  color: var(--cds-text-placeholder);
}

@media (max-width: 41.99rem) {
  .tile--placeholder {
    min-height: 9rem;
  }
}

/* Disabled (coming-soon) real service */
.tile--disabled {
  cursor: default;
}

.tile--disabled .tile__arrow {
  display: none;
}