.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-button);
  font-family: var(--font-body);
  font-size: 0.9375rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  cursor: pointer;
  border: 1px solid transparent;
  text-decoration: none;
  transition:
    transform var(--duration-fast) var(--ease-spring),
    box-shadow var(--duration-fast) var(--ease-spring),
    background var(--duration-fast) var(--ease-default),
    border-color var(--duration-fast) var(--ease-default);
}

.btn:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px rgba(212, 168, 83, 0.12);
}

.btn--primary {
  background: var(--color-accent);
  color: var(--color-canvas);
  border-color: transparent;
}

.btn--primary:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-accent);
}

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

/* F-002: Disabled state for loading feedback via Turbo's data-turbo-submits-with.
   Desaturated amber signals "inert" without introducing a second color.
   Motion suppressed (transform/box-shadow: none) so the state reads as
   deliberately paused, not broken. Does not override :focus-visible. */
.btn--primary[disabled],
.btn--primary[aria-disabled="true"] {
  background: rgba(212, 168, 83, 0.5);
  color: rgba(5, 5, 5, 0.7);
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
  pointer-events: none;
}

.btn--primary .btn__icon {
  width: 1.75rem;
  height: 1.75rem;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
}

.btn--secondary {
  background: transparent;
  color: var(--color-ink);
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.btn--secondary:hover {
  border-color: rgba(255, 255, 255, 0.25);
  background: rgba(255, 255, 255, 0.04);
}

.btn--destructive {
  background: rgba(220, 80, 80, 0.15);
  color: rgba(255, 200, 200, 0.95);
  border: 1px solid rgba(220, 80, 80, 0.4);
}

.btn--destructive:hover {
  background: rgba(220, 80, 80, 0.22);
  border-color: rgba(220, 80, 80, 0.6);
}