.modal-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
  z-index: var(--z-overlay);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-base), visibility var(--transition-base);
}

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

.modal {
  position: relative;
  background-color: var(--color-bg);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  display: flex;
  flex-direction: column;
  max-height: 90vh;
  width: 100%;
  transform: translateY(12px);
  transition: transform var(--transition-base);
}

.modal-overlay.is-open .modal {
  transform: translateY(0);
}

.modal--sm  { max-width: 400px; }
.modal--md  { max-width: 560px; }
.modal--lg  { max-width: 800px; }
.modal--full {
  max-width: 100%;
  max-height: 100%;
  margin: 0;
  border-radius: 0;
}

.modal__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-8);
  border-bottom: 1px solid var(--color-border);
}

.modal__title {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: var(--weight-bold);
  color: var(--color-text);
}

.modal__close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  background: none;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition-fast);
}

.modal__close:hover {
  color: var(--color-text);
  background-color: var(--color-surface);
}

.modal__body {
  padding: var(--space-10);
  overflow-y: auto;
  flex: 1;
}

.modal__footer {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-6);
  border-top: 1px solid var(--color-border);
}