/**
 * Button utility classes — use on <a> or <button>.
 *
 * Accent resolution: --dh-accent (set via field_accent_color on the node)
 * falls back to coral. Components can override --dh-btn-accent locally.
 *
 *   <a class="dh-button dh-button--primary">Start a project</a>
 *   <a class="dh-button dh-button--secondary">View our work</a>
 *   <a class="dh-button dh-button--tertiary">Learn more <span class="dh-button__arrow">→</span></a>
 */

.dh-button {
  --dh-btn-accent: var(--dh-accent, var(--site-color-coral));
  --dh-btn-accent-contrast: var(--dh-accent-contrast, var(--site-color-text-white));
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--site-space-sm);
  padding: 0.875rem 1.75rem;
  border: 1px solid transparent;
  border-radius: var(--site-radius-btn);
  font-family: var(--site-font-sans);
  font-size: 0.875rem;
  font-weight: var(--site-fw-semibold);
  letter-spacing: 0.05em;
  line-height: 1.2;
  text-transform: uppercase;
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
  transition: background-color var(--site-transition-base),
              border-color var(--site-transition-base),
              color var(--site-transition-base),
              transform var(--site-transition-base),
              box-shadow var(--site-transition-base),
              filter var(--site-transition-base);
}

.dh-button:focus-visible {
  outline: 2px solid var(--dh-btn-accent);
  outline-offset: 3px;
}

.dh-button:disabled,
.dh-button[aria-disabled="true"] {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}

/* Primary — filled accent */
.dh-button--primary {
  background-color: var(--dh-btn-accent);
  color: var(--dh-btn-accent-contrast);
}

.dh-button--primary:hover {
  color: var(--dh-btn-accent-contrast);
  filter: brightness(0.9);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.25);
}

.dh-button--primary:active {
  transform: translateY(0);
  filter: brightness(0.85);
  box-shadow: none;
}

/* Secondary — outlined */
.dh-button--secondary {
  background-color: transparent;
  border-color: var(--site-color-border-bright);
  color: var(--site-color-text-heading);
}

.dh-button--secondary:hover {
  border-color: var(--site-color-text-white);
  color: var(--site-color-text-white);
  transform: translateY(-1px);
}

.dh-button--secondary:active {
  transform: translateY(0);
}

/* Tertiary — text link with underline, no chrome */
.dh-button--tertiary {
  padding: 0;
  border: 0;
  background: transparent;
  border-radius: 0;
  color: var(--dh-btn-accent);
  text-transform: none;
  letter-spacing: 0;
  text-decoration: underline;
  text-underline-offset: 0.25em;
  text-decoration-thickness: 1px;
}

.dh-button--tertiary:hover {
  filter: brightness(1.1);
  text-decoration-thickness: 2px;
}

.dh-button--tertiary:focus-visible {
  outline-offset: 2px;
}

/* Arrow glyph — nudges right on hover for primary/tertiary */
.dh-button__arrow {
  display: inline-block;
  transition: transform var(--site-transition-base);
}

.dh-button:hover .dh-button__arrow {
  transform: translateX(3px);
}