/**
 * Universal Modal System
 * Comprehensive modal components with consistent styling and accessibility
 * Consolidates all modal patterns from across the application
 */

/* ===========================================
   MODAL OVERLAY
   =========================================== */

.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: var(--bg-overlay);
  z-index: var(--z-modal-backdrop);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-lg);
  backdrop-filter: blur(4px);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-base),
              visibility var(--transition-base);
}

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

/* ===========================================
   BASE MODAL COMPONENT
   =========================================== */

.modal {
  position: relative;
  display: flex;
  flex-direction: column;
  width: 100%;
  max-width: 32rem;
  max-height: 90vh;
  background-color: var(--bg-elevated);
  border-radius: var(--component-radius-lg);
  box-shadow: var(--component-shadow-xl);
  transform: scale(0.95) translateY(-20px);
  transition: transform var(--transition-base);
  overflow: hidden;
  z-index: var(--z-modal);
}

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

/* Form wrapper inside modal - make it transparent to flexbox layout */
.modal > form {
  display: flex;
  flex-direction: column;
  flex: 1 1 auto;
  min-height: 0;
}

/* Form wrapper inside modal-content - make it fill available space */
.modal-content > form {
  display: flex;
  flex-direction: column;
  flex: 1 1 auto;
  min-height: 0;
}

/* ===========================================
   MODAL SECTIONS
   =========================================== */

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-xl);
  border-bottom: var(--component-border);
  background-color: var(--bg-secondary);
  border-radius: var(--component-radius-lg) var(--component-radius-lg) 0 0;
  flex-shrink: 0;
}

.modal-title {
  font-size: var(--text-xl);
  font-weight: var(--font-semibold);
  color: var(--text-primary);
  margin: 0;
  line-height: var(--leading-tight);
}

.modal-subtitle {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  margin: var(--space-xs) 0 0 0;
  font-weight: var(--font-normal);
}

.modal-close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  background: transparent;
  color: var(--text-muted);
  border: none;
  border-radius: var(--component-radius);
  cursor: pointer;
  transition: var(--transition-colors);
  flex-shrink: 0;
}

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

.modal-close:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.modal-content {
  flex: 1 1 auto;
  min-height: 0;
  padding: var(--space-xl);
  overflow-y: auto;
  overscroll-behavior: contain;
}

/* Override legacy modal-content constraints from components.css */
.modal .modal-content {
  max-width: none !important;
  width: 100% !important;
  overflow-y: auto !important;
}

.modal-content::-webkit-scrollbar {
  width: 8px;
}

.modal-content::-webkit-scrollbar-track {
  background: var(--bg-tertiary);
  border-radius: var(--component-radius-sm);
}

.modal-content::-webkit-scrollbar-thumb {
  background: var(--color-gray-400);
  border-radius: var(--component-radius-sm);
}

.modal-content::-webkit-scrollbar-thumb:hover {
  background: var(--color-gray-500);
}

.modal-footer {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-md);
  padding: var(--space-xl);
  border-top: var(--component-border);
  background-color: var(--bg-secondary);
  border-radius: 0 0 var(--component-radius-lg) var(--component-radius-lg);
  flex-shrink: 0;
}

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

.modal-footer.center {
  justify-content: center;
}

/* ===========================================
   MODAL SIZES
   =========================================== */

.modal-xs {
  width: 20rem !important;
  max-width: 20rem !important;
}

.modal-sm {
  width: 24rem !important;
  max-width: 24rem !important;
}

.modal-md {
  width: 32rem !important;
  max-width: 32rem !important;
}

.modal-lg {
  width: 48rem !important;
  max-width: 48rem !important;
  max-height: 95vh !important;
}

/* Reduce padding on large modals to maximize content space */
.modal-lg .modal-header,
.modal-lg .modal-content,
.modal-lg .modal-footer {
  padding: var(--space-lg);
}

.modal-xl {
  width: 64rem !important;
  max-width: 64rem !important;
}

.modal-2xl {
  width: 80rem !important;
  max-width: 80rem !important;
}

.modal-full {
  width: 95vw !important;
  max-width: 95vw !important;
  max-height: 95vh;
}

/* ===========================================
   MODAL VARIANTS
   =========================================== */

/* Centered modal (default) */
.modal-center {
  align-items: center;
  justify-content: center;
}

/* Top-aligned modal */
.modal-top .modal-overlay {
  align-items: flex-start;
  padding-top: var(--space-3xl);
}

/* Bottom-aligned modal */
.modal-bottom .modal-overlay {
  align-items: flex-end;
  padding-bottom: var(--space-lg);
}

/* Side modal (drawer) */
.modal-drawer {
  position: fixed;
  top: 0;
  right: 0;
  height: 100%;
  max-height: 100vh;
  max-width: 24rem;
  border-radius: 0;
  transform: translateX(100%);
  transition: transform var(--transition-base);
}

.modal-overlay.active .modal-drawer {
  transform: translateX(0);
}

.modal-drawer-left {
  right: auto;
  left: 0;
  transform: translateX(-100%);
}

.modal-overlay.active .modal-drawer-left {
  transform: translateX(0);
}

/* Fullscreen modal */
.modal-fullscreen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  max-width: none;
  max-height: none;
  border-radius: 0;
  transform: scale(1.05);
  z-index: var(--z-modal);
}

.modal-overlay.active .modal-fullscreen {
  transform: scale(1);
}

/* ===========================================
   MODAL TYPES
   =========================================== */

/* Confirmation modal */
.modal-confirm .modal-content {
  text-align: center;
  padding: var(--space-2xl);
}

.modal-confirm .modal-icon {
  font-size: var(--text-4xl);
  margin-bottom: var(--space-lg);
  display: block;
}

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

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

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

.modal-confirm .modal-icon.info {
  color: var(--color-info);
}

.modal-confirm .modal-message {
  font-size: var(--text-base);
  color: var(--text-primary);
  margin-bottom: var(--space-lg);
  line-height: var(--leading-relaxed);
}

.modal-confirm .modal-details {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  margin-bottom: var(--space-xl);
  line-height: var(--leading-relaxed);
}

/* Alert modal */
.modal-alert .modal-header {
  background-color: var(--color-danger-light);
  border-bottom-color: var(--color-danger);
}

.modal-alert .modal-title {
  color: var(--color-danger-dark);
}

.modal-alert .modal-close {
  color: var(--color-danger);
}

/* Success modal */
.modal-success .modal-header {
  background-color: var(--color-success-light);
  border-bottom-color: var(--color-success);
}

.modal-success .modal-title {
  color: var(--color-success-dark);
}

.modal-success .modal-close {
  color: var(--color-success);
}

/* Info modal */
.modal-info .modal-header {
  background-color: var(--color-info-light);
  border-bottom-color: var(--color-info);
}

.modal-info .modal-title {
  color: var(--color-info-dark);
}

.modal-info .modal-close {
  color: var(--color-info);
}

/* Warning modal */
.modal-warning .modal-header {
  background-color: var(--color-warning-light);
  border-bottom-color: var(--color-warning);
}

.modal-warning .modal-title {
  color: var(--color-warning-dark);
}

.modal-warning .modal-close {
  color: var(--color-warning-dark);
}

/* ===========================================
   MODAL CONTENT TYPES
   =========================================== */

/* Form modal */
.modal-form .modal-content {
  padding: 0;
}

.modal-form .form {
  padding: var(--space-xl);
}

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

/* Image modal */
.modal-image .modal-content {
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: #000;
}

.modal-image .modal-image-content {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
}

.modal-image .modal-header,
.modal-image .modal-footer {
  background-color: rgba(0, 0, 0, 0.8);
  color: var(--text-inverse);
  border-color: rgba(255, 255, 255, 0.1);
}

/* Video modal */
.modal-video .modal-content {
  padding: 0;
  background-color: #000;
}

.modal-video .modal-video-content {
  width: 100%;
  height: auto;
  aspect-ratio: 16/9;
}

/* Loading modal */
.modal-loading .modal-content {
  text-align: center;
  padding: var(--space-3xl);
}

.modal-loading .modal-spinner {
  width: 3rem;
  height: 3rem;
  border: 4px solid var(--color-gray-200);
  border-top: 4px solid var(--color-primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin: 0 auto var(--space-lg);
}

.modal-loading .modal-loading-text {
  font-size: var(--text-base);
  color: var(--text-secondary);
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* ===========================================
   MODAL UTILITIES
   =========================================== */

/* Hide scrollbar on body when modal is open */
body.modal-open {
  overflow: hidden;
  padding-right: var(--scrollbar-width, 0);
}

/* Prevent modal content clicks from closing modal */
.modal-content-wrapper {
  position: relative;
  z-index: 1;
}

/* Modal animation variants */
.modal-fade-in {
  animation: fadeIn var(--transition-base) ease-out;
}

.modal-slide-up {
  animation: slideUp var(--transition-base) ease-out;
}

.modal-slide-down {
  animation: slideDown var(--transition-base) ease-out;
}

.modal-zoom-in {
  animation: zoomIn var(--transition-base) ease-out;
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes slideUp {
  from {
    transform: translateY(100%);
  }
  to {
    transform: translateY(0);
  }
}

@keyframes slideDown {
  from {
    transform: translateY(-100%);
  }
  to {
    transform: translateY(0);
  }
}

@keyframes zoomIn {
  from {
    transform: scale(0.8);
    opacity: 0;
  }
  to {
    transform: scale(1);
    opacity: 1;
  }
}

/* ===========================================
   RESPONSIVE MODAL BEHAVIORS
   =========================================== */

@media (max-width: 768px) {
  .modal-overlay {
    padding: var(--space-md);
    align-items: flex-end;
  }
  
  .modal {
    max-width: 100%;
    max-height: 95vh;
    margin: 0;
    border-radius: var(--component-radius-lg) var(--component-radius-lg) 0 0;
    transform: translateY(100%);
  }
  
  .modal-overlay.active .modal {
    transform: translateY(0);
  }
  
  .modal-header,
  .modal-content,
  .modal-footer {
    padding-left: var(--space-lg);
    padding-right: var(--space-lg);
  }
  
  .modal-footer {
    flex-direction: column-reverse;
    gap: var(--space-sm);
  }
  
  .modal-footer .btn {
    width: 100%;
    justify-content: center;
  }
  
  .modal-drawer,
  .modal-drawer-left {
    max-width: 90vw;
    width: 90vw;
  }
  
  .modal-fullscreen {
    border-radius: 0;
  }
  
  /* Stack modal sizes on mobile */
  .modal-xs,
  .modal-sm,
  .modal-md,
  .modal-lg,
  .modal-xl,
  .modal-2xl {
    width: 100% !important;
    max-width: 100% !important;
  }
}

@media (max-width: 480px) {
  .modal-overlay {
    padding: 0;
  }
  
  .modal {
    border-radius: 0;
    max-height: 100vh;
  }
  
  .modal-header,
  .modal-content,
  .modal-footer {
    padding-left: var(--space-md);
    padding-right: var(--space-md);
  }
}

/* ===========================================
   ACCESSIBILITY ENHANCEMENTS
   =========================================== */

/* Focus trap management */
.modal[role="dialog"] {
  outline: none;
}

.modal-overlay[aria-hidden="true"] {
  display: none;
}

/* Screen reader announcements */
.modal-overlay[aria-live="polite"] {
  /* For dynamic content updates */
}

/* Focus management */
.modal:focus {
  outline: none;
}

.modal-close:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  .modal {
    border: 2px solid;
  }
  
  .modal-header,
  .modal-footer {
    border-width: 2px;
  }
  
  .modal-close:focus {
    outline: 3px solid;
    outline-offset: 2px;
  }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
  .modal-overlay,
  .modal,
  .modal-drawer,
  .modal-drawer-left,
  .modal-fullscreen {
    transition: none;
  }
  
  .modal-fade-in,
  .modal-slide-up,
  .modal-slide-down,
  .modal-zoom-in {
    animation: none;
  }
  
  .modal-loading .modal-spinner {
    animation: none;
  }
}

/* Print styles */
@media print {
  .modal-overlay {
    position: static;
    background: transparent;
    padding: 0;
  }
  
  .modal {
    position: static;
    max-width: none;
    max-height: none;
    box-shadow: none;
    border: 1px solid #000;
    transform: none;
  }
  
  .modal-header,
  .modal-footer {
    background-color: transparent !important;
    border-color: #000;
  }
  
  .modal-close {
    display: none;
  }
}