/* ============================================
   Toast notifications — replace browser alerts
   ============================================ */
.toast-container {
  position: fixed;
  top: 80px;
  right: 20px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 8px;
  pointer-events: none;
}

.toast {
  pointer-events: auto;
  padding: 12px 20px;
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  color: #fff;
  box-shadow: var(--shadow-lg);
  max-width: 380px;
  animation: toastIn 0.35s ease-out;
  line-height: 1.5;
}

.toast--success { background: var(--color-success); }
.toast--error   { background: var(--color-error); }
.toast--info    { background: var(--color-blue); }

@keyframes toastIn {
  from { opacity: 0; transform: translateX(100px); }
  to   { opacity: 1; transform: translateX(0); }
}

@keyframes toastOut {
  from { opacity: 1; transform: translateX(0); }
  to   { opacity: 0; transform: translateX(100px); }
}

/* ============================================
   Fullscreen loader — centered AI animation
   ============================================ */
.fullscreen-loader {
  position: fixed;
  inset: 0;
  z-index: 9998;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.6);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.fullscreen-loader--visible {
  opacity: 1;
  visibility: visible;
}

.fullscreen-loader object {
  width: 90px;
  height: 90px;
  display: block;
}

/* ============================================
   Modal dialog — replaces confirm()/prompt()
   ============================================ */
.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 9997;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.3);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s ease, visibility 0.25s ease;
}

.modal-overlay--visible {
  opacity: 1;
  visibility: visible;
}

.modal {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  padding: var(--space-xl);
  max-width: 420px;
  width: calc(100% - 40px);
  transform: scale(0.95) translateY(8px);
  transition: transform 0.25s ease;
}

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

.modal__title {
  font-size: var(--text-lg);
  font-weight: 600;
  margin-bottom: var(--space-md);
  color: var(--color-dark);
}

.modal__text {
  font-size: var(--text-sm);
  color: var(--color-text-soft);
  margin-bottom: var(--space-lg);
  line-height: 1.5;
}

.modal__input {
  width: 100%;
  padding: 0.625rem 0.875rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  margin-bottom: var(--space-lg);
  outline: none;
  transition: border-color var(--transition);
  box-sizing: border-box;
}

.modal__input:focus {
  border-color: var(--color-blue);
}

.modal__actions {
  display: flex;
  gap: var(--space-sm);
  justify-content: flex-end;
}

.modal__actions .btn {
  min-width: 100px;
}