/**
 * RADEXEL Design System - Modal Component
 *
 * Overlay + centered modal card with header, body, footer sections.
 * Supports backdrop click to close, animation, and focus trap readiness.
 * Sizes: default (480px), sm (360px), lg (640px), xl (800px), full
 */

/* ==========================================================================
   Overlay / Backdrop
   ========================================================================== */

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

.modal-overlay.visible,
.modal-overlay[aria-hidden="false"] {
  background: rgba(0, 0, 0, 0.5);
  opacity: 1;
  visibility: visible;
}

/* Dark theme overlay */
:root[data-theme="dark"] .modal-overlay.visible {
  background: rgba(0, 0, 0, 0.7);
}


/* ==========================================================================
   Modal Container
   ========================================================================== */

.modal {
  position: relative;
  z-index: var(--z-modal);
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  width: 100%;
  max-width: 480px;
  max-height: 90vh;
  max-height: 90dvh;
  display: flex;
  flex-direction: column;
  overflow: hidden;

  /* Entrance animation */
  transform: scale(0.95) translateY(8px);
  opacity: 0;
  transition:
    transform var(--duration-slow) var(--ease-out),
    opacity var(--duration-slow) var(--ease-out);
}

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

/* Exit animation - add closing class before removing */
.modal-overlay.closing .modal {
  transform: scale(0.95) translateY(8px);
  opacity: 0;
}


/* ==========================================================================
   Modal Sizes
   ========================================================================== */

.modal-sm {
  max-width: 360px;
}

.modal-lg {
  max-width: 640px;
}

.modal-xl {
  max-width: 800px;
}

.modal-full {
  max-width: calc(100vw - var(--space-8));
  max-height: calc(100vh - var(--space-8));
  max-height: calc(100dvh - var(--space-8));
}


/* ==========================================================================
   Modal Header
   ========================================================================== */

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-5) var(--space-6);
  border-bottom: 1px solid var(--color-border-light);
  flex-shrink: 0;
}

.modal-header h3,
.modal-title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text);
  flex: 1;
  min-width: 0;
}

.modal-header .modal-subtitle {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin-top: var(--space-1);
}

.modal-close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: transparent;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  color: var(--color-text-muted);
  transition:
    background-color var(--duration-fast) var(--ease-default),
    color var(--duration-fast) var(--ease-default);
  flex-shrink: 0;
}

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

.modal-close:focus-visible {
  outline: 2px solid var(--rdx-blue);
  outline-offset: -2px;
}

.modal-close svg {
  width: 18px;
  height: 18px;
}


/* ==========================================================================
   Modal Body
   ========================================================================== */

.modal-body {
  flex: 1;
  padding: var(--space-6);
  overflow-y: auto;
  color: var(--color-text);
}

/* Scrollable content with top/bottom fade */
.modal-body--scrollable {
  position: relative;
}


/* ==========================================================================
   Modal Footer
   ========================================================================== */

.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-light);
  flex-shrink: 0;
}

.modal-footer--left {
  justify-content: flex-start;
}

.modal-footer--between {
  justify-content: space-between;
}

.modal-footer--stack {
  flex-direction: column;
}

.modal-footer--stack .btn {
  width: 100%;
}


/* ==========================================================================
   Confirmation Modal (Compact)
   ========================================================================== */

.modal-confirm .modal-body {
  text-align: center;
  padding: var(--space-8) var(--space-6);
}

.modal-confirm .modal-body .confirm-icon {
  width: 48px;
  height: 48px;
  margin: 0 auto var(--space-4);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
}

.modal-confirm .confirm-icon--danger {
  background: var(--color-danger-light);
  color: var(--color-danger);
}

.modal-confirm .confirm-icon--warning {
  background: var(--color-warning-light);
  color: var(--color-warning);
}

.modal-confirm .confirm-icon--success {
  background: var(--color-success-light);
  color: var(--color-success);
}

.modal-confirm .confirm-icon svg {
  width: 24px;
  height: 24px;
}

.modal-confirm .confirm-title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-2);
}

.modal-confirm .confirm-message {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
}


/* ==========================================================================
   Form inside Modal
   ========================================================================== */

.modal .form-group {
  margin-bottom: var(--space-4);
}

.modal .form-group:last-child {
  margin-bottom: 0;
}

.modal .form-group label {
  display: block;
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

.modal .form-group input,
.modal .form-group select,
.modal .form-group textarea {
  width: 100%;
  padding: var(--space-2) var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: var(--font-size-base);
  background: var(--color-bg);
  color: var(--color-text);
  transition:
    border-color var(--duration-fast) var(--ease-default),
    box-shadow var(--duration-fast) var(--ease-default);
}

.modal .form-group input:focus,
.modal .form-group select:focus,
.modal .form-group textarea:focus {
  outline: none;
  border-color: var(--color-border-focus);
  box-shadow: var(--shadow-focus);
}

.modal .form-group input:disabled {
  background: var(--color-bg-secondary);
  color: var(--color-text-muted);
  cursor: not-allowed;
}