.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  
  /* DIM BACKGROUND FIX: Softens the background without turning it pitch black */
  background-color: rgba(15, 23, 42, 0.25); 
  
  /* FROSTED GLASS EFFECT: Blurs the content behind the modal */
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px); 

  /* STACKING FIX: Safe max integer layer limit */
  z-index: 2147483647;
  
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  box-sizing: border-box;
  opacity: 0;
  pointer-events: none;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

/* Base Modal Container layout window positioned dead center */
.modal-alert-window {
  background: #ffffff;
  width: 100%;
  max-width: 440px;
  border-radius: 14px;
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  
  /* ANIMATION FIX: Using 3D matrix translation for fluid, hardware-accelerated movement */
  transform: scale(0.9) translate3d(0, 20px, 0);
  transition: transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

/* Animation trigger configurations toggled via JS class adjustments */
.modal-backdrop.modal-active {
  opacity: 1;
  pointer-events: auto;
  visibility: visible;
}

.modal-backdrop.modal-active .modal-alert-window {
  transform: scale(1) translate3d(0, 0, 0);
}

/* Internal body padding & structural layouts */
.modal-body-layout {
  padding: 24px 24px 16px 24px;
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

/* Modern Rounded Icon frame borders container */
.modal-icon-frame {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.modal-icon-frame svg {
  width: 22px;
  height: 22px;
}

/* Typography styles setup */
.modal-text-frame {
  flex: 1;
}

.modal-title-text {
  margin: 0 0 8px 0;
  font-size: 16px;
  font-weight: 600;
  color: #111827;
}

.modal-description-text {
  font-size: 14px;
  color: #4b5563;
  line-height: 1.5;
  margin: 0;
}

.modal-description-text p {
  margin: 0 0 8px 0;
}

.modal-gap {
  height: 10px;
}

/* Action control bar footer configuration setup */
.modal-actions-layout {
  background: #f9fafb;
  padding: 12px 24px;
  display: flex;
  justify-content: flex-end;
  gap: 12px;
  
  /* FIX: Explicit bottom border radiuses prevent design shape metrics without clipping children */
  border-bottom-left-radius: 14px;
  border-bottom-right-radius: 14px;
  border-top: 1px solid #f3f4f6;
}

/* Unified Action Button Rules */
.modal-btn {
  padding: 8px 16px;
  font-size: 14px;
  font-weight: 500;
  border-radius: 6px;
  cursor: pointer;
  border: 1px solid transparent;
  transition: background-color 0.15s ease, box-shadow 0.15s ease;
}

/* ACCESSIBILITY: Adds visual focus state rings for keyboard navigation */
.modal-btn:focus-visible {
  outline: 2px solid #2563eb;
  outline-offset: 2px;
}

.modal-btn-cancel {
  background: #ffffff;
  border-color: #d1d5db;
  color: #374151;
}

.modal-btn-cancel:hover {
  background: #f3f4f6;
}

/* --- THEME CONFIGURATIONS / PRESETS --- */

/* Danger (Red Theme) */
.modal-type-danger .modal-icon-frame { background: #fee2e2; color: #dc2626; }
.modal-type-danger .modal-btn-confirm { background: #dc2626; color: #ffffff; }
.modal-type-danger .modal-btn-confirm:hover { background: #b91c1c; }

/* Warning (Yellow/Orange Theme) */
.modal-type-warning .modal-icon-frame { background: #fef3c7; color: #d97706; }
.modal-type-warning .modal-btn-confirm { background: #d97706; color: #ffffff; }
.modal-type-warning .modal-btn-confirm:hover { background: #b45309; }

/* Info (Blue Theme) */
.modal-type-info .modal-icon-frame { background: #e0f2fe; color: #2563eb; }
.modal-type-info .modal-btn-confirm { background: #2563eb; color: #ffffff; }
.modal-type-info .modal-btn-confirm:hover { background: #1d4ed8; }

/* Success (Green Theme) */
.modal-type-success .modal-icon-frame { background: #d1fae5; color: #059669; }
.modal-type-success .modal-btn-confirm { background: #059669; color: #ffffff; }
.modal-type-success .modal-btn-confirm:hover { background: #047857; }