/* ==========================================================================
   BrightAI Design System - Modals Component
   ========================================================================== */

.modal-backdrop {
  position: fixed;
  inset: 0;
  background-color: rgba(15, 23, 42, 0.4);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition-normal);
}

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

.modal {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-4);
  width: 100%;
  max-width: 500px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  transform: scale(0.95) translateY(10px);
  transition: var(--transition-normal);
  overflow: hidden;
}

.modal-backdrop.is-active .modal {
  transform: scale(1) translateY(0);
}

/* Modal Sizes */
.modal-sm { max-width: 400px; }
.modal-md { max-width: 550px; }
.modal-lg { max-width: 800px; }

/* Modal Elements */
.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-lg);
  border-bottom: 1px solid var(--color-border);
}

.modal-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--text-primary);
}

.modal-close {
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: var(--spacing-xs);
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-fast);
}

.modal-close:hover {
  background-color: var(--color-surface-hover);
  color: var(--text-primary);
}

.modal-body {
  padding: var(--spacing-lg);
  overflow-y: auto;
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  line-height: 1.6;
}

.modal-footer {
  padding: var(--spacing-md) var(--spacing-lg);
  background-color: var(--gray-50);
  border-top: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--spacing-sm);
}

/* Animations for modal transitions */
@keyframes modal-fade-in {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes modal-slide-up {
  from { transform: scale(0.95) translateY(15px); }
  to { transform: scale(1) translateY(0); }
}

/* Responsive modal logic */
@media (max-width: 640px) {
  .modal {
    max-width: calc(100% - var(--spacing-lg)) !important;
    margin: var(--spacing-md);
  }
}