/* components/modal/modal.css */
/* Modal Component */

/* WCAG 2.2 AAA compliant */

/* Component-specific custom properties */
.c-modal {
  /* Z-index hierarchy */
  --c-modal-backdrop-z-index: 2000;
  --c-modal-container-z-index: 2001;
  --c-modal-stacked-z-index: 2100;
  
  /* Timing */
  --c-modal-transition-duration: 200ms;
  --c-modal-transition-timing: cubic-bezier(0.4, 0, 0.2, 1);
  
  /* Backdrop */
  --c-modal-backdrop-bg: rgba(12, 26, 61, 0.6);
  --c-modal-backdrop-blur: 4px;
  
  /* Container */
  --c-modal-bg: var(--ds-color-surface);
  --c-modal-border-radius: var(--ds-radius-l);
  --c-modal-shadow: var(--ds-shadow-xl);
  --c-modal-padding: var(--ds-space-l);
  --c-modal-max-width: 32rem;
  --c-modal-max-height: calc(100vh - 4rem);
  --c-modal-margin: var(--ds-space-xl);
  
  /* Header */
  --c-modal-header-padding: var(--ds-space-l);
  --c-modal-header-border-color: var(--ds-color-border);
  
  /* Body */
  --c-modal-body-padding: var(--ds-space-l);
  
  /* Footer */
  --c-modal-footer-padding: var(--ds-space-l);
  --c-modal-footer-border-color: var(--ds-color-border);
  --c-modal-footer-gap: var(--ds-space-m);
  
  /* Close button */
  --c-modal-close-size: 2.5rem;
  --c-modal-close-color: var(--ds-color-icon);
  --c-modal-close-hover-color: var(--ds-color-text);
  --c-modal-close-hover-bg: var(--ds-color-button-hover);
}

/* Modal backdrop */
.c-modal__backdrop {
  position: fixed;
  inset: 0;
  z-index: var(--c-modal-backdrop-z-index);
  background: var(--c-modal-backdrop-bg);
  opacity: 0;
  visibility: hidden;
  transition: 
    opacity var(--c-modal-transition-duration) var(--c-modal-transition-timing),
    visibility var(--c-modal-transition-duration) var(--c-modal-transition-timing);
  will-change: opacity;
  
  /* Blur effect for modern browsers */
  backdrop-filter: blur(0);
  -webkit-backdrop-filter: blur(0);
}

/* Active backdrop */
.c-modal--open .c-modal__backdrop {
  opacity: 1;
  visibility: visible;
  backdrop-filter: blur(var(--c-modal-backdrop-blur));
  -webkit-backdrop-filter: blur(var(--c-modal-backdrop-blur));
}

/* Modal container */
.c-modal__container {
  position: fixed;
  z-index: var(--c-modal-container-z-index);
  display: flex;
  align-items: center;
  justify-content: center;
  inset: 0;
  padding: var(--c-modal-margin);
  opacity: 0;
  visibility: hidden;
  transition: 
    opacity var(--c-modal-transition-duration) var(--c-modal-transition-timing),
    visibility var(--c-modal-transition-duration) var(--c-modal-transition-timing);
  will-change: opacity;
  
  /* Prevent interaction when closed */
  pointer-events: none;
}

/* Active container */
.c-modal--open .c-modal__container {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

/* Modal dialog */
.c-modal__dialog {
  position: relative;
  width: 100%;
  max-width: var(--c-modal-max-width);
  max-height: var(--c-modal-max-height);
  margin: auto;
  background: var(--c-modal-bg);
  border-radius: var(--c-modal-border-radius);
  box-shadow: var(--c-modal-shadow);
  display: flex;
  flex-direction: column;
  transform: scale(0.95) translateY(1rem);
  transition: transform var(--c-modal-transition-duration) var(--c-modal-transition-timing);
  will-change: transform;
  
  /* Ensure dialog is scrollable */
  overflow: hidden;
}

/* Active dialog animation */
.c-modal--open .c-modal__dialog {
  transform: scale(1) translateY(0);
}

/* Modal header */
.c-modal__header {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--ds-space-m);
  padding: var(--c-modal-header-padding);
  border-bottom: 1px solid var(--c-modal-header-border-color);
  flex-shrink: 0;
}

/* Modal title */
.c-modal__title {
  margin: 0;
  font-size: var(--ds-font-size-xl);
  font-weight: var(--ds-font-weight-semibold);
  line-height: var(--ds-line-height-s);
  color: var(--ds-color-text);
  
  /* Prevent text selection during drag */
  user-select: none;
}

/* Modal subtitle */
.c-modal__subtitle {
  margin: var(--ds-space-xs) 0 0;
  font-size: var(--ds-font-size-s);
  color: var(--ds-color-text-weak);
}

/* Modal close button */
.c-modal__close {
  position: absolute;
  top: var(--ds-space-m);
  right: var(--ds-space-m);
  width: var(--c-modal-close-size);
  height: var(--c-modal-close-size);
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: none;
  border-radius: var(--ds-radius-m);
  color: var(--c-modal-close-color);
  cursor: pointer;
  transition: all var(--ds-duration-fast) var(--ds-ease-out);
  
  /* Accessibility */
  aria-label: "Zamknij okno dialogowe";
}

.c-modal__close:hover {
  background: var(--c-modal-close-hover-bg);
  color: var(--c-modal-close-hover-color);
}

.c-modal__close:focus-visible {
  outline: var(--ds-focus-ring-width) solid var(--ds-focus-ring-color);
  outline-offset: var(--ds-focus-ring-offset);
}

.c-modal__close svg {
  width: 1.25rem;
  height: 1.25rem;
  stroke: currentColor;
  stroke-width: 2;
}

/* Modal body */
.c-modal__body {
  flex: 1;
  padding: var(--c-modal-body-padding);
  overflow-y: auto;
  overflow-x: hidden;
  overscroll-behavior: contain;
  
  /* Smooth scrolling */
  scroll-behavior: smooth;
  
  /* Custom scrollbar */
  scrollbar-width: thin;
  scrollbar-color: var(--ds-color-border) transparent;
}

.c-modal__body::-webkit-scrollbar {
  width: 0.5rem;
}

.c-modal__body::-webkit-scrollbar-track {
  background: transparent;
}

.c-modal__body::-webkit-scrollbar-thumb {
  background: var(--ds-color-border);
  border-radius: var(--ds-radius-pill);
}

.c-modal__body::-webkit-scrollbar-thumb:hover {
  background: var(--ds-color-border-strong);
}

/* Modal footer */
.c-modal__footer {
  padding: var(--c-modal-footer-padding);
  border-top: 1px solid var(--c-modal-footer-border-color);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--c-modal-footer-gap);
  flex-shrink: 0;
}

/* Footer alignment variants */
.c-modal__footer--start {
  justify-content: flex-start;
}

.c-modal__footer--center {
  justify-content: center;
}

.c-modal__footer--space-between {
  justify-content: space-between;
}

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

/* Extra Small */
.c-modal--xs {
  --c-modal-max-width: 20rem;
}

/* Small */
.c-modal--small,
.c-modal--s {
  --c-modal-max-width: 24rem;
}

/* Medium (default) */
.c-modal--medium,
.c-modal--m {
  --c-modal-max-width: 32rem;
}

/* Large */
.c-modal--large,
.c-modal--l {
  --c-modal-max-width: 48rem;
}

/* Extra Large */
.c-modal--xl {
  --c-modal-max-width: 64rem;
}

/* Fullscreen */
.c-modal--fullscreen {
  --c-modal-margin: 0;
}

.c-modal--fullscreen .c-modal__dialog {
  max-width: 100%;
  max-height: 100%;
  height: 100%;
  border-radius: 0;
}

/* ========================================
   Modal Positions
   ======================================== */

/* Top position */
.c-modal--top .c-modal__container {
  align-items: flex-start;
}

.c-modal--top .c-modal__dialog {
  transform: scale(0.95) translateY(-2rem);
}

.c-modal--top.c-modal--open .c-modal__dialog {
  transform: scale(1) translateY(0);
}

/* Bottom position */
.c-modal--bottom .c-modal__container {
  align-items: flex-end;
}

.c-modal--bottom .c-modal__dialog {
  transform: scale(0.95) translateY(2rem);
}

.c-modal--bottom.c-modal--open .c-modal__dialog {
  transform: scale(1) translateY(0);
}

/* ========================================
   Stacked Modals
   ======================================== */

.c-modal--stacked {
  --c-modal-backdrop-z-index: calc(var(--c-modal-stacked-z-index) + var(--modal-stack-level, 0) * 10);
  --c-modal-container-z-index: calc(var(--c-modal-stacked-z-index) + var(--modal-stack-level, 0) * 10 + 1);
}

.c-modal--stacked .c-modal__backdrop {
  background: rgba(12, 26, 61, 0.2);
}

/* ========================================
   Modal Variants
   ======================================== */

/* Confirmation dialog */
.c-modal--confirmation .c-modal__body {
  text-align: center;
  padding: var(--ds-space-xl);
}

.c-modal--confirmation .c-modal__icon {
  width: 4rem;
  height: 4rem;
  margin: 0 auto var(--ds-space-l);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--ds-radius-circle);
  background: var(--ds-color-status-info-weak);
  color: var(--ds-color-text-info);
}

.c-modal--confirmation .c-modal__icon svg {
  width: 2rem;
  height: 2rem;
  stroke: currentColor;
  stroke-width: 2;
}

/* Danger confirmation */
.c-modal--confirmation.c-modal--danger .c-modal__icon {
  background: var(--ds-color-status-danger-weak);
  color: var(--ds-color-text-danger);
}

/* Success confirmation */
.c-modal--confirmation.c-modal--success .c-modal__icon {
  background: var(--ds-color-status-success-weak);
  color: var(--ds-color-text-success);
}

/* Warning confirmation */
.c-modal--confirmation.c-modal--warning .c-modal__icon {
  background: var(--ds-color-status-warning-weak);
  color: var(--ds-color-text-warning);
}

/* Loading overlay */
.c-modal--loading .c-modal__body::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255, 255, 255, 0.8);
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: center;
}

.c-modal--loading .c-modal__spinner {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 3rem;
  height: 3rem;
  z-index: 11;
}

.c-modal__spinner {
  width: 3rem;
  height: 3rem;
  border: 3px solid var(--ds-color-border);
  border-top-color: var(--ds-color-accent);
  border-radius: var(--ds-radius-circle);
  animation: modal-spin 0.8s linear infinite;
}

@keyframes modal-spin {
  to { transform: translate(-50%, -50%) rotate(360deg); }
}

/* ========================================
   No Header/Footer Variants
   ======================================== */

.c-modal--no-header .c-modal__header {
  display: none;
}

.c-modal--no-footer .c-modal__footer {
  display: none;
}

.c-modal--no-padding .c-modal__body {
  padding: 0;
}

/* ========================================
   Scrollable Variant
   ======================================== */

.c-modal--scrollable .c-modal__dialog {
  display: flex;
  flex-direction: column;
  max-height: var(--c-modal-max-height);
}

.c-modal--scrollable .c-modal__body {
  flex: 1;
  overflow-y: auto;
}

/* ========================================
   Responsive Design
   ======================================== */

@media (max-width: 640px) {
  .c-modal {
    --c-modal-margin: var(--ds-space-m);
  }
  
  .c-modal__dialog {
    max-width: calc(100vw - 2 * var(--ds-space-m));
    max-height: calc(100vh - 2 * var(--ds-space-m));
  }
  
  .c-modal--large,
  .c-modal--xl {
    --c-modal-max-width: calc(100vw - 2 * var(--ds-space-m));
  }
  
  .c-modal__header {
    padding: var(--ds-space-m);
  }
  
  .c-modal__body {
    padding: var(--ds-space-m);
  }
  
  .c-modal__footer {
    padding: var(--ds-space-m);
    flex-direction: column;
    align-items: stretch;
  }
  
  .c-modal__footer button {
    width: 100%;
  }
  
  /* Bottom sheet style on mobile */
  .c-modal--mobile-bottom .c-modal__container {
    align-items: flex-end;
    padding: 0;
  }
  
  .c-modal--mobile-bottom .c-modal__dialog {
    max-width: 100%;
    border-radius: var(--ds-radius-l) var(--ds-radius-l) 0 0;
    transform: translateY(100%);
  }
  
  .c-modal--mobile-bottom.c-modal--open .c-modal__dialog {
    transform: translateY(0);
  }
}

/* ========================================
   Accessibility
   ======================================== */

/* Focus trap indicator */
.c-modal[data-focus-trapped="true"] {
  /* Visual indicator for debugging */
}

/* Prevent body scroll when modal is open */
body.c-modal-open {
  overflow: hidden;
  /* position: fixed;
  width: 100%;
  height: 100vh; */
}

/* Screen reader only text */
.c-modal__sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  .c-modal__dialog {
    border: 2px solid;
  }
  
  .c-modal__header {
    border-bottom-width: 2px;
  }
  
  .c-modal__footer {
    border-top-width: 2px;
  }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
  .c-modal__backdrop,
  .c-modal__container,
  .c-modal__dialog {
    transition-duration: 0.01ms;
  }
  
  .c-modal__spinner {
    animation: none;
    opacity: 0.5;
  }
}

/* Print styles */
@media print {
  .c-modal__backdrop,
  .c-modal__close {
    display: none;
  }
  
  .c-modal__dialog {
    position: static;
    max-width: 100%;
    max-height: none;
    box-shadow: none;
    border: 1px solid;
  }
}