/* ==========================================================================
   NavRun Animations & Motion Design
   ========================================================================== */

/* -------------------------------------------------------------------------
   Loading Overlay
   ------------------------------------------------------------------------- */
#loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(248, 250, 252, 0.95);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: none;
  justify-content: center;
  align-items: center;
  z-index: 9999;
  flex-direction: column;
}

@media (prefers-color-scheme: dark) {
  #loading-overlay {
    background: rgba(15, 23, 42, 0.95);
  }
}

#loading-overlay.active {
  display: flex;
}

.loading-spinner {
  width: 64px;
  height: 64px;
  position: relative;
}

.loading-spinner::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: 3px solid #e2e8f0;
  border-top-color: #2563eb;
  border-radius: 50%;
  box-sizing: border-box;
  -webkit-animation: spin 0.8s cubic-bezier(0.68, -0.55, 0.265, 1.55) infinite;
  animation: spin 0.8s cubic-bezier(0.68, -0.55, 0.265, 1.55) infinite;
}

.loading-spinner::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 48px;
  height: 48px;
  margin-top: -24px;
  margin-left: -24px;
  border: 2px solid rgba(16, 185, 129, 0.2);
  border-top-color: #10b981;
  border-radius: 50%;
  box-sizing: border-box;
  -webkit-animation: spin 1.2s linear infinite reverse;
  animation: spin 1.2s linear infinite reverse;
}

.loading-text {
  font-size: var(--text-lg);
  font-weight: var(--font-semibold);
  color: var(--color-text);
  margin-top: var(--space-lg);
}

.loading-subtext {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-top: var(--space-sm);
  max-width: 300px;
  text-align: center;
}

/* -------------------------------------------------------------------------
   Keyframe Animations
   ------------------------------------------------------------------------- */
@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.85;
    transform: scale(1.02);
  }
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

/* -------------------------------------------------------------------------
   Animation Utility Classes
   ------------------------------------------------------------------------- */
.animate-fade-in {
  animation: fadeIn 0.3s ease-out;
}

.animate-fade-in-up {
  animation: fadeInUp 0.4s ease-out;
}

.animate-fade-in-down {
  animation: fadeInDown 0.4s ease-out;
}

.animate-slide-in-right {
  animation: slideInRight 0.4s ease-out;
}

.animate-slide-in-left {
  animation: slideInLeft 0.4s ease-out;
}

.animate-scale-in {
  animation: scaleIn 0.3s ease-out;
}

.animate-pulse {
  animation: pulse 2s ease-in-out infinite;
}

.animate-float {
  animation: float 3s ease-in-out infinite;
}

/* -------------------------------------------------------------------------
   Stagger Animation for Lists
   ------------------------------------------------------------------------- */
.stagger-item {
  opacity: 0;
  animation: fadeInUp 0.4s ease-out forwards;
}

.stagger-item:nth-child(1) { animation-delay: 0.05s; }
.stagger-item:nth-child(2) { animation-delay: 0.1s; }
.stagger-item:nth-child(3) { animation-delay: 0.15s; }
.stagger-item:nth-child(4) { animation-delay: 0.2s; }
.stagger-item:nth-child(5) { animation-delay: 0.25s; }
.stagger-item:nth-child(6) { animation-delay: 0.3s; }
.stagger-item:nth-child(7) { animation-delay: 0.35s; }
.stagger-item:nth-child(8) { animation-delay: 0.4s; }

/* -------------------------------------------------------------------------
   Hover Transitions
   ------------------------------------------------------------------------- */
.hover-lift {
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.hover-lift:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.hover-scale {
  transition: transform var(--transition-fast);
}

.hover-scale:hover {
  transform: scale(1.02);
}

.hover-glow {
  transition: box-shadow var(--transition-base);
}

.hover-glow:hover {
  box-shadow: 0 0 20px var(--color-primary-subtle);
}

/* -------------------------------------------------------------------------
   Skeleton Loading States
   ------------------------------------------------------------------------- */

/* Base Skeleton with Shimmer Animation */
.skeleton {
  background: linear-gradient(
    90deg,
    var(--color-border-light) 0%,
    #e8edf3 20%,
    var(--color-bg-subtle) 40%,
    #e8edf3 60%,
    var(--color-border-light) 100%
  );
  background-size: 200% 100%;
  animation: shimmer 1.8s ease-in-out infinite;
  border-radius: var(--radius-md);
  position: relative;
  overflow: hidden;
}

/* Skeleton respects reduced motion preference */
@media (prefers-reduced-motion: reduce) {
  .skeleton {
    animation: skeletonPulse 2s ease-in-out infinite;
  }
}

@keyframes skeletonPulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}

/* -------------------------------------------------------------------------
   Text Skeleton Components
   ------------------------------------------------------------------------- */

/* Single line of text */
.skeleton-text {
  height: 1rem;
  margin-bottom: var(--space-sm);
  border-radius: var(--radius-sm);
}

.skeleton-text-sm {
  height: 0.875rem;
  margin-bottom: var(--space-sm);
  border-radius: var(--radius-sm);
}

.skeleton-text-lg {
  height: 1.25rem;
  margin-bottom: var(--space-sm);
  border-radius: var(--radius-sm);
}

/* Heading/Title */
.skeleton-title {
  height: 2rem;
  width: 60%;
  margin-bottom: var(--space-md);
  border-radius: var(--radius-md);
}

.skeleton-title-sm {
  height: 1.5rem;
  width: 50%;
  margin-bottom: var(--space-md);
  border-radius: var(--radius-md);
}

.skeleton-title-lg {
  height: 2.5rem;
  width: 70%;
  margin-bottom: var(--space-md);
  border-radius: var(--radius-md);
}

/* Paragraph (multiple lines) */
.skeleton-paragraph {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.skeleton-paragraph .skeleton-text:last-child {
  width: 70%;
}

/* -------------------------------------------------------------------------
   Card Skeleton Components
   ------------------------------------------------------------------------- */

/* Generic card skeleton */
.skeleton-card {
  height: 200px;
  margin-bottom: var(--space-md);
  border-radius: var(--radius-lg);
}

/* Metric card skeleton (for dashboard stats) */
.skeleton-metric-card {
  padding: var(--space-lg);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  height: 140px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
}

.skeleton-metric-icon {
  width: 48px;
  height: 48px;
  border-radius: 50%;
}

.skeleton-metric-value {
  width: 80px;
  height: 2.5rem;
  border-radius: var(--radius-md);
}

.skeleton-metric-label {
  width: 100px;
  height: 1rem;
  border-radius: var(--radius-sm);
}

/* Activity card skeleton (for recent activities on home) */
.skeleton-activity-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  height: 100%;
  min-height: 280px;
}

.skeleton-activity-card-header {
  height: 80px;
  border-radius: 0;
  margin-bottom: 0;
  background: linear-gradient(
    90deg,
    #d0ddf0 0%,
    #dce6f5 20%,
    #e5ecf7 40%,
    #dce6f5 60%,
    #d0ddf0 100%
  );
  background-size: 200% 100%;
  animation: shimmer 1.8s ease-in-out infinite;
}

.skeleton-activity-card-body {
  padding: var(--space-md);
}

.skeleton-activity-metric {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  margin-bottom: var(--space-md);
}

.skeleton-activity-metric-label {
  width: 60%;
  height: 0.75rem;
  border-radius: var(--radius-sm);
}

.skeleton-activity-metric-value {
  width: 80%;
  height: 1.25rem;
  border-radius: var(--radius-sm);
}

/* -------------------------------------------------------------------------
   Table Row Skeleton
   ------------------------------------------------------------------------- */

/* Activity list table skeleton */
.skeleton-table-row {
  display: table-row;
}

.skeleton-table-cell {
  padding: var(--space-md) var(--space-sm);
  vertical-align: middle;
}

.skeleton-table-cell .skeleton {
  margin-bottom: 0;
}

/* -------------------------------------------------------------------------
   Form Skeleton Components
   ------------------------------------------------------------------------- */

.skeleton-input {
  height: 38px;
  width: 100%;
  margin-bottom: var(--space-md);
  border-radius: var(--radius-md);
}

.skeleton-button {
  height: 38px;
  width: 120px;
  border-radius: var(--radius-md);
}

.skeleton-button-sm {
  height: 32px;
  width: 80px;
  border-radius: var(--radius-md);
}

/* -------------------------------------------------------------------------
   Special Shape Skeletons
   ------------------------------------------------------------------------- */

.skeleton-circle {
  border-radius: 50%;
}

.skeleton-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
}

.skeleton-avatar-lg {
  width: 80px;
  height: 80px;
  border-radius: 50%;
}

.skeleton-badge {
  height: 24px;
  width: 60px;
  border-radius: var(--radius-full);
  display: inline-block;
}

/* -------------------------------------------------------------------------
   Width Utilities for Skeleton Elements
   ------------------------------------------------------------------------- */

.skeleton-w-full { width: 100%; }
.skeleton-w-3-4 { width: 75%; }
.skeleton-w-2-3 { width: 66.666%; }
.skeleton-w-1-2 { width: 50%; }
.skeleton-w-1-3 { width: 33.333%; }
.skeleton-w-1-4 { width: 25%; }

/* -------------------------------------------------------------------------
   Calendar Skeleton
   ------------------------------------------------------------------------- */

.skeleton-calendar-day {
  min-height: 100px;
  padding: var(--space-xs);
  border: 1px solid var(--color-border);
}

.skeleton-calendar-date {
  width: 20px;
  height: 14px;
  margin-bottom: var(--space-sm);
  border-radius: var(--radius-sm);
}

.skeleton-calendar-event {
  height: 32px;
  margin-bottom: var(--space-xs);
  border-radius: var(--radius-sm);
}

/* -------------------------------------------------------------------------
   Composite Skeleton Layouts (Ready-to-Use Examples)
   ------------------------------------------------------------------------- */

/* Example: Full metric card with skeleton */
.skeleton-metric-card-example {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-lg);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  height: 140px;
}

/* Example: Activity list item skeleton */
.skeleton-activity-item {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-md);
}

.skeleton-activity-item-icon {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  flex-shrink: 0;
}

.skeleton-activity-item-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

/* -------------------------------------------------------------------------
   Loading Container (for hiding real content while showing skeleton)
   ------------------------------------------------------------------------- */

.loading-skeleton-container {
  position: relative;
  min-height: 100px;
}

.loading-skeleton-container[data-loaded="false"] .skeleton-content {
  display: block;
}

.loading-skeleton-container[data-loaded="false"] .real-content {
  display: none;
}

.loading-skeleton-container[data-loaded="true"] .skeleton-content {
  display: none;
}

.loading-skeleton-container[data-loaded="true"] .real-content {
  display: block;
  animation: fadeInUp 0.4s ease-out;
}

/* -------------------------------------------------------------------------
   Progress Bar Animations
   ------------------------------------------------------------------------- */
.progress-animated .progress-bar {
  animation: progressFill 1s ease-out forwards;
}

@keyframes progressFill {
  from {
    width: 0;
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

/* -------------------------------------------------------------------------
   Chart Animations
   ------------------------------------------------------------------------- */
.chart-container {
  opacity: 0;
  animation: fadeInUp 0.6s ease-out 0.2s forwards;
}