/* ==========================================================================
   Buttons
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--fs-sm);
  letter-spacing: 0.01em;
  padding: 14px 26px;
  border-radius: var(--radius-sm);
  border: 1.5px solid transparent;
  transition: transform var(--dur-fast) var(--ease),
              background var(--dur-fast) var(--ease),
              border-color var(--dur-fast) var(--ease),
              box-shadow var(--dur-fast) var(--ease);
  white-space: nowrap;
}

.btn:active { transform: translateY(1px); }

.btn--primary {
  background: var(--amber);
  color: var(--amber-ink);
  border-color: var(--amber);
}
.btn--primary:hover {
  background: var(--amber-hover);
  border-color: var(--amber-hover);
  box-shadow: var(--shadow-md);
}

.btn--secondary {
  background: transparent;
  color: var(--text-on-paper);
  border-color: var(--ink);
}
.btn--secondary:hover {
  background: var(--ink);
  color: var(--text-on-ink);
}

/* variant for use on dark (ink) surfaces, e.g. hero */
.btn--on-dark {
  background: transparent;
  color: var(--text-on-ink);
  border-color: var(--line-on-ink);
}
.btn--on-dark:hover {
  border-color: var(--text-on-ink);
  background: rgba(245, 243, 236, 0.06);
}

.btn--ghost {
  background: transparent;
  color: var(--cyan);
  border-color: transparent;
  padding-inline: var(--space-2);
}
.btn--ghost:hover { color: var(--cyan-hover); text-decoration: underline; }

.btn--sm { padding: 9px 18px; font-size: var(--fs-xs); }
.btn--lg { padding: 17px 34px; font-size: var(--fs-md); }
.btn--block { width: 100%; }

.btn--icon {
  padding: 10px;
  border-radius: var(--radius-sm);
}

.btn[disabled] {
  opacity: 0.45;
  cursor: not-allowed;
  pointer-events: none;
}

.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  background: transparent;
  border: none;
  color: inherit;
  position: relative;
  transition: background var(--dur-fast) var(--ease);
}
.icon-btn:hover { background: var(--line-on-ink); }
.icon-btn svg { width: 22px; height: 22px; }

.icon-btn .count-badge {
  position: absolute;
  top: 2px;
  right: 2px;
  min-width: 16px;
  height: 16px;
  padding: 0 3px;
  border-radius: var(--radius-pill);
  background: var(--amber);
  color: var(--amber-ink);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
}

/* Ensure the hidden attribute always wins over .btn display rule
   (attribute selectors alone lose to class selectors on specificity). */
.btn[hidden],
[hidden] {
  display: none !important;
}