.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(5, 10, 20, 0.8);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
  padding: 1rem;
}

.modal-overlay.open {
  opacity: 1;
  pointer-events: auto;
}

.modal-box {
  background: var(--bg-2);
  border: 1px solid rgba(6, 182, 212, 0.15);
  border-radius: var(--radius-lg);
  padding: 2.25rem;
  width: 100%;
  max-width: 420px;
  position: relative;
  transform: translateY(16px) scale(0.97);
  transition: transform 0.25s cubic-bezier(0.34, 1.4, 0.64, 1);
}

.modal-overlay.open .modal-box {
  transform: translateY(0) scale(1);
}

.modal-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  width: 28px;
  height: 28px;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border);
  border-radius: 50%;
  color: var(--text-dim);
  font-size: 1rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
  line-height: 1;
}

.modal-close:hover {
  background: rgba(255,255,255,0.1);
  color: var(--text);
}

.modal-box h2 {
  margin-bottom: 1.5rem;
  font-size: 1.3rem;
}

.auth-view {
  display: none;
}

.auth-view.active {
  display: block;
}

.auth-switch {
  text-align: center;
  margin-top: 1.25rem;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.auth-switch a {
  color: var(--cyan);
  font-weight: 500;
}

.auth-view form .btn {
  width: 100%;
  margin-top: 0.5rem;
}

.modal-box .form-group:last-of-type {
  margin-bottom: 0;
}

.modal-header {
  margin-bottom: 1.5rem;
}

.modal-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text);
}

.confirm-text {
  color: var(--text-dim);
  font-size: 0.9rem;
  line-height: 1.6;
  margin-bottom: 1.5rem;
}

.alias-check-msg {
  font-size: 0.78rem;
  min-height: 1.1rem;
  margin-top: 0.2rem;
}

.auth-form { display: flex; flex-direction: column; }
.auth-form .btn-primary { margin-top: 0.5rem; }

.alias-input-wrapper {
  display: flex;
  align-items: center;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  background: rgba(6, 182, 212, 0.04);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.alias-input-wrapper:focus-within {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(6, 182, 212, 0.08);
}

.alias-prefix {
  padding: 0.65rem 0.5rem 0.65rem 0.9rem;
  font-size: 0.82rem;
  color: var(--text-muted);
  white-space: nowrap;
  flex-shrink: 0;
  border-right: 1px solid var(--border);
  line-height: 1;
}

.alias-suffix-input {
  border: none !important;
  border-radius: 0 !important;
  background: transparent !important;
  box-shadow: none !important;
  flex: 1;
  min-width: 0;
}

.alias-check-msg {
  font-size: 0.78rem;
  min-height: 1rem;
  margin-top: 0.25rem;
}