/* ═══ Modal Backdrop ═══ */
.modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 300;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(26, 18, 11, 0.4);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--duration-normal) ease;
}
.modal-backdrop.is-open {
  opacity: 1;
  pointer-events: auto;
}

/* ═══ Sign-up Modal ═══ */
.signup-modal {
  position: relative;
  width: 90%;
  max-width: 400px;
  padding: var(--space-2xl) var(--space-xl);
  border-radius: var(--radius-xl);
  background: var(--cream);
  box-shadow: 0 24px 64px rgba(26, 18, 11, 0.2);
  transform: translateY(10px);
  transition: transform var(--duration-normal) var(--ease-smooth);
}
.modal-backdrop.is-open .signup-modal {
  transform: translateY(0);
}
.signup-modal__close {
  position: absolute;
  top: var(--space-md);
  right: var(--space-md);
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: none;
  background: none;
  color: var(--walnut);
  cursor: pointer;
  border-radius: 50%;
}
.signup-modal__close:hover {
  background: rgba(42, 31, 20, 0.04);
}
.signup-modal__title {
  font-size: 24px;
  font-weight: 900;
  color: var(--espresso);
  text-align: center;
  margin-bottom: var(--space-xl);
}
.signup-modal__form {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}
.signup-modal__field {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}
.signup-modal__label {
  font-size: 14px;
  font-weight: 500;
  color: var(--espresso);
}
.signup-modal__input {
  font-family: var(--font-body);
  font-size: 15px;
  padding: 12px 16px;
  border: 1px solid rgba(42, 31, 20, 0.12);
  border-radius: var(--radius-md);
  background: #fff;
  color: var(--espresso);
  outline: none;
}
.signup-modal__input:focus {
  border-color: var(--coffee);
}
.signup-modal__submit {
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 600;
  padding: 12px;
  border: none;
  border-radius: var(--radius-md);
  background: var(--espresso);
  color: var(--text-on-dark);
  cursor: pointer;
  margin-top: var(--space-sm);
  transition: background var(--duration-fast) ease;
}
.signup-modal__submit:hover {
  background: var(--near-black);
}
.signup-modal__alt {
  font-size: 14px;
  color: var(--text-secondary);
  text-align: center;
}
.signup-modal__alt a {
  color: var(--espresso);
  font-weight: 600;
}
.signup-modal__success {
  text-align: center;
  padding: var(--space-lg) 0;
}
.signup-modal__form.success { display: none !important; }
.signup-modal__form.success ~ .signup-modal__success { display: block !important; }