.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: "Public Sans", sans-serif;
  text-decoration: none;
  cursor: pointer;
  border: none;
  background: none;
  font-size: 0.8rem;
  gap: 0.5rem;
  /* Ensures space between icon and text */
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}

/* Shared Physical Traits for Neo-Brutalist Variants */
.btn-physical {
  padding: 0.5rem 0.8rem;
  font-weight: 900;
  text-transform: uppercase;
  border: var(--border-width) solid var(--border-black);
  box-shadow: var(--shadow-offset-sm) var(--shadow-offset-sm) 0 var(--border-black);
  transition:
    transform 0.15s ease,
    box-shadow 0.15s ease;
}

.btn-physical:hover:not(:disabled) {
  transform: translateY(-4px) translateX(-4px);
  box-shadow: calc(var(--shadow-offset-sm) + 4px) calc(var(--shadow-offset-sm) + 4px) 0 var(--border-black);
}

.btn-physical.active:not(:disabled) {
  transform: translateY(0) translateX(0);
  box-shadow: 0 0 0 var(--border-black);
}

/* Physical Variant Colors */
.btn-primary {
  background-color: var(--primary-blue);
  color: var(--border-black);
}

.btn-dark {
  background-color: var(--border-black);
  color: #fff;
}

.btn-outline {
  background-color: transparent;
  color: var(--border-black);
}

/* Link Variants */
.btn-link {
  font-weight: 700;
  color: #fff;
  opacity: 0.8;
  padding: 0;
}

.btn-link:hover:not(:disabled) {
  opacity: 1;
  text-decoration: underline;
  text-underline-offset: 4px;
}

.btn-nav-link {
  font-weight: 700;
  color: var(--border-black);
  padding: 0rem 0.8rem;
  transition:
    background-color 0.2s ease,
    border-color 0.2s ease;
}

.btn-nav-link:hover:not(:disabled) {
  background-color: var(--accent-yellow);
}

.btn-nav-link.active {
  text-decoration: underline;
  text-decoration-thickness: 4px;
  text-decoration-color: var(--accent-yellow);
}

.btn-sidebar-link {
  display: flex;
  width: 100%;
  padding: 0.5rem 0;
  color: var(--border-black);
  font-weight: 700;
  text-align: left;
}

.btn-sidebar-link.active {
  background-color: var(--accent-yellow);
  border-left: 4px solid var(--border-black);
  padding-left: 0.5rem;
}

.btn-sidebar-link:hover:not(:disabled) {
  text-decoration: underline;
}

/* Auto-size icons */
.btn svg {
  width: 1.2em;
  height: 1.2em;
  pointer-events: none;
}