/**
 * Advanced Interactions & Micro-animations
 * تحسينات متقدمة للتفاعلات والحركات الدقيقة
 * Inspired by Apple, Google, Stripe
 */

/* ============================================
   Ripple Effect (Material Design Style)
   ============================================ */
.ripple {
  position: relative;
  overflow: hidden;
  cursor: pointer;
}

.ripple-effect {
  position: absolute;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.6);
  transform: scale(0);
  animation: ripple-animation 0.6s ease-out;
  pointer-events: none;
}

@keyframes ripple-animation {
  to {
    transform: scale(4);
    opacity: 0;
  }
}

.ripple::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.5);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

.ripple:active::before {
  width: 300px;
  height: 300px;
}

/* Ripple for buttons */
.btn.ripple::before {
  background: rgba(255, 255, 255, 0.3);
}

.btn-outline.ripple::before {
  background: rgba(32, 87, 129, 0.2);
}

/* ============================================
   Button Press Feedback
   ============================================ */
.btn-press {
  transition: transform 0.1s ease, box-shadow 0.1s ease;
}

.btn-press:active {
  transform: scale(0.95);
  box-shadow: var(--shadow-xs);
}

/* ============================================
   Loading States
   ============================================ */

/* Skeleton Loading */
.skeleton {
  background: linear-gradient(
    90deg,
    var(--color-bg-secondary) 0%,
    var(--color-bg-tertiary) 50%,
    var(--color-bg-secondary) 100%
  );
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s ease-in-out infinite;
  border-radius: var(--radius-md);
}

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

.skeleton-text {
  height: 1em;
  margin-bottom: 0.5em;
}

.skeleton-text:last-child {
  width: 60%;
}

.skeleton-image {
  width: 100%;
  padding-top: 75%; /* 4:3 aspect ratio */
}

.skeleton-card {
  background: var(--color-bg-primary);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-md);
}

/* Loading Spinner */
.spinner {
  width: 40px;
  height: 40px;
  border: 4px solid var(--color-bg-tertiary);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.spinner-sm {
  width: 20px;
  height: 20px;
  border-width: 2px;
}

.spinner-lg {
  width: 60px;
  height: 60px;
  border-width: 6px;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Loading Overlay */
.loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(255, 255, 255, 0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: var(--z-modal);
  backdrop-filter: blur(4px);
}

/* Progress Bar */
.progress-bar {
  width: 100%;
  height: 4px;
  background: var(--color-bg-tertiary);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-primary), var(--color-primary-light));
  border-radius: var(--radius-full);
  transition: width 0.3s ease;
  animation: progress-shimmer 2s infinite;
}

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

/* ============================================
   Card Enhancements
   ============================================ */

/* Glassmorphism Effect */
.card-glass {
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.3);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}

/* Gradient Border Card */
.card-gradient-border {
  position: relative;
  background: var(--color-bg-primary);
  border-radius: var(--radius-lg);
  padding: 2px;
}

.card-gradient-border::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius-lg);
  padding: 2px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  z-index: -1;
}

.card-gradient-border .card-content {
  background: var(--color-bg-primary);
  border-radius: calc(var(--radius-lg) - 2px);
  padding: var(--spacing-lg);
}

/* Animated Background Card */
.card-animated-bg {
  position: relative;
  overflow: hidden;
  background: var(--color-bg-primary);
}

.card-animated-bg::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: linear-gradient(
    45deg,
    transparent 30%,
    rgba(32, 87, 129, 0.05) 50%,
    transparent 70%
  );
  animation: card-shimmer 3s infinite;
  z-index: 0;
}

.card-animated-bg > * {
  position: relative;
  z-index: 1;
}

@keyframes card-shimmer {
  0% {
    transform: translateX(-100%) translateY(-100%) rotate(45deg);
  }
  100% {
    transform: translateX(100%) translateY(100%) rotate(45deg);
  }
}

/* Hover Lift Effect */
.card-lift {
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.card-lift:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: var(--shadow-xl);
}

/* ============================================
   Smooth Transitions
   ============================================ */
.transition-all {
  transition: all var(--transition-base);
}

.transition-fast {
  transition: all var(--transition-fast);
}

.transition-slow {
  transition: all var(--transition-slow);
}

/* ============================================
   Advanced Animations
   ============================================ */

/* Fade In Up */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-fade-in-up {
  animation: fadeInUp 0.6s ease-out;
}

/* Fade In Down */
@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-fade-in-down {
  animation: fadeInDown 0.6s ease-out;
}

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

.animate-scale-in {
  animation: scaleIn 0.4s ease-out;
}

/* Slide In Right */
@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.animate-slide-in-right {
  animation: slideInRight 0.5s ease-out;
}

/* Slide In Left */
@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.animate-slide-in-left {
  animation: slideInLeft 0.5s ease-out;
}

/* Bounce In */
@keyframes bounceIn {
  0% {
    opacity: 0;
    transform: scale(0.3);
  }
  50% {
    transform: scale(1.05);
  }
  70% {
    transform: scale(0.9);
  }
  100% {
    opacity: 1;
    transform: scale(1);
  }
}

.animate-bounce-in {
  animation: bounceIn 0.6s ease-out;
}

/* Pulse */
@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

.animate-pulse {
  animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

/* Shake */
@keyframes shake {
  0%, 100% {
    transform: translateX(0);
  }
  10%, 30%, 50%, 70%, 90% {
    transform: translateX(-5px);
  }
  20%, 40%, 60%, 80% {
    transform: translateX(5px);
  }
}

.animate-shake {
  animation: shake 0.5s ease-in-out;
}

/* ============================================
   Stagger Animation (for lists)
   ============================================ */
.stagger-item {
  opacity: 0;
  animation: fadeInUp 0.6s ease-out forwards;
}

.stagger-item:nth-child(1) { animation-delay: 0.1s; }
.stagger-item:nth-child(2) { animation-delay: 0.2s; }
.stagger-item:nth-child(3) { animation-delay: 0.3s; }
.stagger-item:nth-child(4) { animation-delay: 0.4s; }
.stagger-item:nth-child(5) { animation-delay: 0.5s; }
.stagger-item:nth-child(6) { animation-delay: 0.6s; }

/* ============================================
   Parallax Scrolling
   ============================================ */
.parallax-container {
  position: relative;
  overflow: hidden;
}

.parallax-element {
  will-change: transform;
  transition: transform 0.1s ease-out;
}

/* ============================================
   Hover Effects
   ============================================ */

/* Glow Effect */
.hover-glow {
  transition: box-shadow var(--transition-base);
}

.hover-glow:hover {
  box-shadow: 0 0 20px rgba(32, 87, 129, 0.4);
}

/* Scale on Hover */
.hover-scale {
  transition: transform var(--transition-base);
}

.hover-scale:hover {
  transform: scale(1.05);
}

/* Rotate on Hover */
.hover-rotate {
  transition: transform var(--transition-base);
}

.hover-rotate:hover {
  transform: rotate(5deg);
}

/* ============================================
   Focus States (Accessibility)
   ============================================ */
.focus-ring {
  outline: 2px solid transparent;
  outline-offset: 2px;
  transition: outline-color var(--transition-fast);
}

.focus-ring:focus {
  outline-color: var(--color-primary);
  outline-width: 2px;
}

.focus-ring:focus:not(:focus-visible) {
  outline: none;
}

/* ============================================
   Smooth Scroll
   ============================================ */
html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* ============================================
   Intersection Observer Animation
   ============================================ */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.animate-on-scroll.animated {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================
   Loading Button State
   ============================================ */
.btn-loading-state {
  position: relative;
  color: transparent;
  pointer-events: none;
}

.btn-loading-state::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 20px;
  height: 20px;
  margin-left: -10px;
  margin-top: -10px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}