/* ==============================================
   Universal Page Transitions
   Smooth transitions for all task navigation
   ============================================== */

/* Page transition overlay - scale up from center */
.page-transition-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: var(--bg-primary);
  z-index: 9999;
  opacity: 0;
  transform: scale(0.8);
  transition: all 0.15s ease-out;
  pointer-events: none;
}

.page-transition-overlay.active {
  opacity: 1;
  transform: scale(1);
  pointer-events: all;
}

/* Loading spinner in center */
.page-transition-content {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
  color: var(--text-primary);
}

.page-transition-spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--border);
  border-top: 3px solid var(--accent);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin: 0 auto var(--space-sm);
}

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

.page-transition-text {
  font-size: var(--font-sm);
  color: var(--text-secondary);
  margin: 0;
}

/* Page scale-in effect for destination pages */
.page-fade-in {
  animation: scaleIn 0.2s ease-out;
}

@keyframes scaleIn {
  0% {
    opacity: 0;
    transform: scale(0.95);
  }
  100% {
    opacity: 1;
    transform: scale(1);
  }
}

/* Task button loading state */
.task-loading {
  position: relative;
  pointer-events: none;
}

.task-loading::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 16px;
  height: 16px;
  margin: -8px 0 0 -8px;
  border: 2px solid transparent;
  border-top: 2px solid currentColor;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.task-loading .task-text {
  opacity: 0.3;
}

/* Quick action buttons loading state */
.quick-action-loading {
  position: relative;
  pointer-events: none;
  opacity: 0.7;
}

.quick-action-loading::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 14px;
  height: 14px;
  margin: -7px 0 0 -7px;
  border: 2px solid transparent;
  border-top: 2px solid currentColor;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

/* Smooth page exit effect */
.page-exit {
  animation: fadeOut 0.2s ease-in;
}

@keyframes fadeOut {
  0% {
    opacity: 1;
    transform: translateY(0);
  }
  100% {
    opacity: 0;
    transform: translateY(-5px);
  }
}