/* =============================================================================
   SoulCore Billing - Modal Component
   TASK-010: Modal Component
   =============================================================================

   Sizes: sm, md (default), lg, full
   ============================================================================= */

/* -----------------------------------------------------------------------------
   Modal Container (Overlay)
   ----------------------------------------------------------------------------- */
.billing-modal {
  position: fixed;
  inset: 0;
  z-index: var(--z-modal);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-md);
  opacity: 0;
  visibility: hidden;
  transition:
    opacity var(--transition-normal),
    visibility var(--transition-normal);
}

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

.billing-modal--closing {
  opacity: 0;
}

.billing-modal[hidden] {
  display: none;
}

/* -----------------------------------------------------------------------------
   Modal Backdrop
   ----------------------------------------------------------------------------- */
.billing-modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(2px);
  -webkit-backdrop-filter: blur(2px);
}

[data-theme="dark"] .billing-modal__backdrop {
  background: rgba(0, 0, 0, 0.7);
}

/* -----------------------------------------------------------------------------
   Modal Dialog
   ----------------------------------------------------------------------------- */
.billing-modal__dialog {
  position: relative;
  display: flex;
  flex-direction: column;
  width: 100%;
  max-width: 32rem;
  max-height: calc(100vh - var(--space-lg) * 2);
  background: var(--bg-elevated);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  transform: scale(0.95) translateY(-10px);
  transition: transform var(--transition-normal);
}

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

.billing-modal--closing .billing-modal__dialog {
  transform: scale(0.95) translateY(-10px);
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  .billing-modal,
  .billing-modal__dialog {
    transition: opacity var(--transition-fast);
  }

  .billing-modal__dialog {
    transform: none !important;
  }
}

/* -----------------------------------------------------------------------------
   Modal Size Variants
   ----------------------------------------------------------------------------- */
.billing-modal__dialog--sm {
  max-width: 24rem;
}

.billing-modal__dialog--md {
  max-width: 32rem;
}

.billing-modal__dialog--lg {
  max-width: 48rem;
}

.billing-modal__dialog--xl {
  max-width: 64rem;
}

.billing-modal__dialog--full {
  max-width: calc(100vw - var(--space-lg) * 2);
  max-height: calc(100vh - var(--space-lg) * 2);
}

/* -----------------------------------------------------------------------------
   Modal Header
   ----------------------------------------------------------------------------- */
.billing-modal__header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-md);
  padding: var(--space-lg);
  border-bottom: 1px solid var(--border-default);
}

.billing-modal__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: var(--text-size-xl);
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
  line-height: var(--leading-tight);
}

.billing-modal__subtitle {
  margin: var(--space-xs) 0 0 0;
  font-family: var(--font-body);
  font-size: var(--text-size-sm);
  color: var(--text-secondary);
  line-height: var(--leading-normal);
}

/* -----------------------------------------------------------------------------
   Modal Close Button
   ----------------------------------------------------------------------------- */
.billing-modal__close {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  padding: 0;
  margin: -0.25rem -0.25rem -0.25rem 0;
  border: none;
  border-radius: var(--radius-md);
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  transition:
    background-color var(--transition-fast),
    color var(--transition-fast);
}

.billing-modal__close:hover {
  background: var(--bg-card);
  color: var(--text-primary);
}

.billing-modal__close:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.billing-modal__close-icon {
  width: 1.25rem;
  height: 1.25rem;
}

/* -----------------------------------------------------------------------------
   Modal Body
   ----------------------------------------------------------------------------- */
.billing-modal__body {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-lg);
  font-family: var(--font-body);
  font-size: var(--text-size-base);
  color: var(--text-primary);
  line-height: var(--leading-normal);
}

/* -----------------------------------------------------------------------------
   Modal Footer
   ----------------------------------------------------------------------------- */
.billing-modal__footer {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-lg);
  border-top: 1px solid var(--border-default);
  background: var(--bg-card);
  border-radius: 0 0 var(--radius-xl) var(--radius-xl);
}

.billing-modal__footer--left {
  justify-content: flex-start;
}

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

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

/* -----------------------------------------------------------------------------
   Dark Theme
   ----------------------------------------------------------------------------- */
[data-theme="dark"] .billing-modal__dialog {
  background: var(--bg-elevated);
  border-color: var(--border-default);
}

[data-theme="dark"] .billing-modal__close:hover {
  background: var(--bg-card);
}

[data-theme="dark"] .billing-modal__footer {
  background: var(--bg-card);
}

/* -----------------------------------------------------------------------------
   Responsive
   ----------------------------------------------------------------------------- */
@media (max-width: 640px) {
  .billing-modal {
    padding: var(--space-sm);
    align-items: flex-end;
  }

  .billing-modal__dialog {
    max-height: calc(100vh - var(--space-sm) * 2);
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
    transform: translateY(100%);
  }

  .billing-modal--open .billing-modal__dialog {
    transform: translateY(0);
  }

  .billing-modal--closing .billing-modal__dialog {
    transform: translateY(100%);
  }

  .billing-modal__dialog--sm,
  .billing-modal__dialog--md,
  .billing-modal__dialog--lg,
  .billing-modal__dialog--xl {
    max-width: 100%;
  }

  .billing-modal__footer {
    border-radius: 0;
  }
}