/* ==========================================================================
   Buttons — primary / secondary / icon buttons
   States: default, :active, :focus-visible, [disabled] all explicit.
   Hover is a bonus enhancement only, never load-bearing (rule #13).
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding-inline: var(--space-6);
  padding-block: var(--space-3);
  border-radius: var(--radius-pill);
  font-weight: 600;
  font-size: var(--fs-small);
  line-height: 1;
  white-space: nowrap;
  transition: transform var(--duration-fast) var(--ease-standard),
              background-color var(--duration-fast) var(--ease-standard),
              box-shadow var(--duration-fast) var(--ease-standard);
  min-block-size: 44px; /* touch target */
}

.btn svg {
  inline-size: 1.1em;
  block-size: 1.1em;
  flex-shrink: 0;
}

/* Primary — main CTAs */
.btn--primary {
  background: var(--color-accent);
  color: var(--color-navy);
}

.btn--primary:hover {
  background: #d9bfb0;
}

.btn--primary:active {
  transform: scale(0.97);
  background: #bd9a86;
}

/* Secondary — lower emphasis */
.btn--secondary {
  background: transparent;
  color: var(--color-navy);
  border: 1.5px solid var(--color-navy);
}

.btn--secondary:hover {
  background: rgba(var(--color-navy-rgb), 0.06);
}

.btn--secondary:active {
  transform: scale(0.97);
  background: rgba(var(--color-navy-rgb), 0.12);
}

/* Secondary on dark backgrounds */
.btn--secondary-inverse {
  background: transparent;
  color: var(--color-white);
  border: 1.5px solid rgba(255, 255, 255, 0.5);
}

.btn--secondary-inverse:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--color-white);
}

.btn[disabled] {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

/* Icon-only round button (FAB, arrows, socials) */
.btn-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  inline-size: 44px;
  block-size: 44px;
  border-radius: 50%;
  background: rgba(var(--color-navy-rgb), 0.06);
  color: var(--color-navy);
  flex-shrink: 0;
  transition: background-color var(--duration-fast) var(--ease-standard),
              transform var(--duration-fast) var(--ease-standard);
}

.btn-icon svg {
  inline-size: 20px;
  block-size: 20px;
}

.btn-icon:hover {
  background: rgba(var(--color-navy-rgb), 0.12);
}

.btn-icon:active {
  transform: scale(0.92);
}

.btn-icon--inverse {
  background: rgba(255, 255, 255, 0.12);
  color: var(--color-white);
}

.btn-icon--inverse:hover {
  background: rgba(255, 255, 255, 0.22);
}

.btn-icon--accent {
  background: var(--color-accent);
  color: var(--color-navy);
}