:root {
  --ca-font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  --ca-bg-color: rgba(255, 255, 255, 0.70); /* Slightly more transparent */
  --ca-backdrop-blur: 20px; /* Stronger blur for premium feel */
  --ca-border: 1px solid rgba(255, 255, 255, 0.6);
  --ca-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.15);
  --ca-text-color: #333;
  --ca-confirm-color: #4f46e5;
  --ca-cancel-color: #ef4444;
  --ca-border-radius: 16px;
  --ca-z-index: 10000;
}

/* --- CrystalAlert Core Styles --- */

.ca-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.1); /* Lighter overlay */
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: var(--ca-z-index);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
  backdrop-filter: blur(5px);
}

.ca-overlay.ca-show {
  opacity: 1;
  visibility: visible;
}

.ca-modal {
  background: var(--ca-bg-color);
  backdrop-filter: blur(var(--ca-backdrop-blur));
  -webkit-backdrop-filter: blur(var(--ca-backdrop-blur));
  border: var(--ca-border);
  box-shadow: var(--ca-shadow);
  border-radius: var(--ca-border-radius);
  padding: 2.5rem 2rem;
  width: 90%;
  max-width: 420px;
  text-align: center;
  transform: scale(0.9) translateY(20px) perspective(1000px) rotateX(10deg);
  transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
  opacity: 0;
}

.ca-overlay.ca-show .ca-modal {
  transform: scale(1) translateY(0) perspective(1000px) rotateX(0deg);
  opacity: 1;
}

/* Icons */
.ca-icon {
  width: 70px;
  height: 70px;
  margin: 0 auto 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  position: relative;
}

/* Icon Animations */
.ca-icon svg {
  width: 36px;
  height: 36px;
  stroke-width: 2.5;
  /* Consider moving keyframe definitions outside if not only used here */
}

.ca-icon.success { background: linear-gradient(135deg, rgba(167, 243, 208, 0.4), rgba(52, 211, 153, 0.4)); color: #059669; }
.ca-icon.error { background: linear-gradient(135deg, rgba(254, 202, 202, 0.4), rgba(248, 113, 113, 0.4)); color: #dc2626; }
.ca-icon.warning { background: linear-gradient(135deg, rgba(253, 230, 138, 0.4), rgba(251, 191, 36, 0.4)); color: #d97706; }
.ca-icon.info { background: linear-gradient(135deg, rgba(191, 219, 254, 0.4), rgba(96, 165, 250, 0.4)); color: #2563eb; }

/* Text */
.ca-title {
  font-size: 1.75rem;
  font-weight: 800;
  margin: 0 0 0.75rem;
  color: var(--ca-text-color);
  letter-spacing: -0.5px;
}

.ca-text {
  font-size: 1.05rem;
  color: #555;
  margin-bottom: 2rem;
  line-height: 1.6;
}

/* Buttons */
.ca-actions {
  display: flex;
  justify-content: center;
  gap: 12px;
}

.ca-btn {
  padding: 12px 28px;
  border: none;
  border-radius: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  font-size: 1rem;
  position: relative;
  overflow: hidden;
}

.ca-btn:disabled {
  opacity: 0.7;
  cursor: not-allowed;
  filter: grayscale(0.5);
}

.ca-btn-confirm {
  background: var(--ca-confirm-color);
  color: white;
  box-shadow: 0 4px 15px rgba(79, 70, 229, 0.4);
}

.ca-btn-confirm:not(:disabled):hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(79, 70, 229, 0.5);
}

.ca-btn-cancel {
  background: rgba(255, 255, 255, 0.5);
  color: var(--ca-cancel-color);
  border: 1px solid rgba(239, 68, 68, 0.2);
}

.ca-btn-cancel:hover {
  background: rgba(255, 255, 255, 0.8);
  border-color: rgba(239, 68, 68, 0.5);
}

/* Spinner for Async Buttons */
.ca-spinner {
  display: none;
  width: 18px;
  height: 18px;
  border: 2px solid rgba(255,255,255,0.3);
  border-radius: 50%;
  border-top-color: #fff;
  animation: spin 0.8s linear infinite;
  position: absolute;
  top: 50%;
  left: 50%;
  margin-top: -9px;
  margin-left: -9px;
}

.ca-loading .ca-btn-text {
  visibility: hidden;
}

.ca-loading .ca-spinner {
  display: block;
}

/* --- TOASTS --- */
.ca-toast-container {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: var(--ca-z-index);
  display: flex;
  flex-direction: column;
  gap: 10px;
  pointer-events: none; /* Let clicks pass through gaps */
}

.ca-toast {
  pointer-events: auto;
  background: var(--ca-bg-color);
  backdrop-filter: blur(var(--ca-backdrop-blur));
  -webkit-backdrop-filter: blur(var(--ca-backdrop-blur));
  border: var(--ca-border);
  box-shadow: 0 10px 30px rgba(0,0,0,0.1);
  padding: 1rem 1.5rem;
  border-radius: 12px;
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 250px;
  max-width: 350px;
  transform-origin: right center;
  animation: slideInRight 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  transition: all 0.3s ease;
  cursor: pointer;
}

.ca-toast.hide {
  opacity: 0;
  transform: translateX(100%) scale(0.9);
}

.ca-toast-icon {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
}

.ca-toast-content {
  flex-grow: 1;
}

.ca-toast-title {
  font-weight: 700;
  font-size: 0.95rem;
  color: #333;
  margin: 0;
}

.ca-toast-text {
  font-size: 0.85rem;
  color: #666;
  margin: 2px 0 0;
}

.ca-progress-bar {
  position: absolute;
  bottom: 0;
  left: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--ca-confirm-color), #818cf8);
  width: 100%;
  transform-origin: left;
  border-radius: 0 0 0 12px; /* Visual tweak */
}

/* Keyframe Animations (Essential) */
@keyframes spin {
  to { transform: rotate(360deg); }
}

@keyframes slideInRight {
  from { opacity: 0; transform: translateX(50px) scale(0.95); }
  to { opacity: 1; transform: translateX(0) scale(1); }
}