.modal {
  position: fixed;
  inset: 0;
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--dur-base) var(--ease-out),
              visibility var(--dur-base) var(--ease-out);
}

.modal.is-open {
  opacity: 1;
  visibility: visible;
}

.modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(5, 5, 5, 0.75);
  backdrop-filter: blur(6px);
}

.modal__panel {
  position: relative;
  z-index: 1;
  width: min(440px, 100%);
  background: var(--black-800);
  border: 1px solid var(--black-600);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  transform: scale(0.94) translateY(8px);
  opacity: 0;
  transition: transform var(--dur-base) var(--ease-out),
              opacity var(--dur-base) var(--ease-out);
}

.modal.is-open .modal__panel {
  transform: scale(1) translateY(0);
  opacity: 1;
}

.modal__close {
  position: absolute;
  top: var(--space-3);
  right: var(--space-3);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: none;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--black-700);
  color: var(--text-primary);
  cursor: pointer;
  transition: background var(--dur-fast) var(--ease-out),
              color var(--dur-fast) var(--ease-out);
}

.modal__close:hover,
.modal__close:focus-visible {
  background: var(--gold-500);
  color: var(--text-on-gold);
}

.modal__close .icon {
  width: 1.1rem;
  height: 1.1rem;
}

.modal__title {
  font-size: var(--fs-lg);
  font-weight: 900;
  padding-right: 2.5rem;
  margin-bottom: var(--space-4);
}

.modal__tabs {
  display: flex;
  gap: var(--space-1);
  margin-bottom: var(--space-4);
  border-bottom: 1px solid var(--black-600);
}

.modal__tab {
  flex: 1;
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--text-muted);
  font-weight: 700;
  font-size: var(--fs-xs);
  padding: var(--space-2) var(--space-1) var(--space-3);
  cursor: pointer;
  transition: color var(--dur-fast) var(--ease-out),
              border-color var(--dur-fast) var(--ease-out);
}

.modal__tab:hover {
  color: var(--text-primary);
}

.modal__tab.is-active {
  color: var(--gold-400);
  border-color: var(--gold-500);
}

.donate-panel {
  display: none;
  text-align: center;
}

.donate-panel.is-active {
  display: block;
}

.donate-panel__qr {
  width: 170px;
  margin: 0 auto var(--space-4);
  padding: var(--space-2);
  background: #fff;
  border-radius: var(--radius-md);
}

.donate-panel__address {
  font-family: monospace;
  font-size: var(--fs-xs);
  color: var(--text-muted);
  word-break: break-all;
  margin-bottom: var(--space-4);
}

.copy-btn {
  width: 100%;
  justify-content: center;
  transition: background-color var(--dur-fast) var(--ease-out),
              transform var(--dur-fast) var(--ease-out),
              box-shadow var(--dur-fast) var(--ease-out);
}

.copy-btn.is-copied {
  background: var(--gold-300);
}

@media (max-width: 480px) {
  .modal__panel {
    padding: var(--space-4);
  }

  .modal__tab {
    font-size: 0.65rem;
  }
}