/* ===== ANIMATIONS & TRANSITIONS ===== */

/* ===== SCROLL ANIMATIONS ===== */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s ease-out;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

.slide-in-left {
  opacity: 0;
  transform: translateX(-50px);
  transition: all 0.6s ease-out;
}

.slide-in-left.visible {
  opacity: 1;
  transform: translateX(0);
}

.slide-in-right {
  opacity: 0;
  transform: translateX(50px);
  transition: all 0.6s ease-out;
}

.slide-in-right.visible {
  opacity: 1;
  transform: translateX(0);
}

.scale-in {
  opacity: 0;
  transform: scale(0.8);
  transition: all 0.6s ease-out;
}

.scale-in.visible {
  opacity: 1;
  transform: scale(1);
}

/* ===== HOVER ANIMATIONS ===== */
.hover-lift {
  transition: var(--transition);
}

.hover-lift:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-medium);
}

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

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

.hover-rotate {
  transition: var(--transition);
}

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

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

.hover-glow:hover {
  box-shadow: 0 0 20px rgba(44, 90, 160, 0.3);
}

/* ===== LOADING ANIMATIONS ===== */
.loading-spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 3px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  border-top-color: var(--white-color);
  animation: spin 1s ease-in-out infinite;
}

.loading-dots {
  display: inline-block;
}

.loading-dots::after {
  content: '';
  animation: dots 1.5s steps(4, end) infinite;
}

@keyframes dots {
  0%, 20% {
    content: '';
  }
  40% {
    content: '.';
  }
  60% {
    content: '..';
  }
  80%, 100% {
    content: '...';
  }
}

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

@keyframes pulse {
  0% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
  100% {
    opacity: 1;
  }
}

/* ===== BUTTON ANIMATIONS ===== */
.btn-animated {
  position: relative;
  overflow: hidden;
}

.btn-animated::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left 0.5s;
}

.btn-animated:hover::before {
  left: 100%;
}

.btn-bounce {
  transition: var(--transition);
}

.btn-bounce:hover {
  animation: bounce 0.6s ease;
}

@keyframes bounce {
  0%, 20%, 60%, 100% {
    transform: translateY(0);
  }
  40% {
    transform: translateY(-10px);
  }
  80% {
    transform: translateY(-5px);
  }
}

.btn-shake {
  transition: var(--transition);
}

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

@keyframes shake {
  0%, 100% {
    transform: translateX(0);
  }
  25% {
    transform: translateX(-5px);
  }
  75% {
    transform: translateX(5px);
  }
}

/* ===== CARD ANIMATIONS ===== */
.card-flip {
  perspective: 1000px;
}

.card-flip-inner {
  position: relative;
  width: 100%;
  height: 100%;
  text-align: center;
  transition: transform 0.6s;
  transform-style: preserve-3d;
}

.card-flip:hover .card-flip-inner {
  transform: rotateY(180deg);
}

.card-flip-front,
.card-flip-back {
  position: absolute;
  width: 100%;
  height: 100%;
  backface-visibility: hidden;
  border-radius: var(--border-radius);
}

.card-flip-back {
  transform: rotateY(180deg);
}

.card-tilt {
  transition: var(--transition);
}

.card-tilt:hover {
  transform: perspective(1000px) rotateX(5deg) rotateY(5deg);
}

/* ===== TEXT ANIMATIONS ===== */
.text-typing {
  overflow: hidden;
  border-right: 2px solid var(--primary-color);
  white-space: nowrap;
  animation: typing 3.5s steps(40, end), blink-caret 0.75s step-end infinite;
}

@keyframes typing {
  from {
    width: 0;
  }
  to {
    width: 100%;
  }
}

@keyframes blink-caret {
  from, to {
    border-color: transparent;
  }
  50% {
    border-color: var(--primary-color);
  }
}

.text-fade-in {
  opacity: 0;
  animation: fadeInText 1s ease-in-out forwards;
}

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

.text-slide-up {
  opacity: 0;
  transform: translateY(30px);
  animation: slideUpText 0.8s ease-out forwards;
}

@keyframes slideUpText {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ===== ICON ANIMATIONS ===== */
.icon-spin {
  animation: spin 2s linear infinite;
}

.icon-bounce {
  animation: bounce 1s infinite;
}

.icon-pulse {
  animation: pulse 2s infinite;
}

.icon-wiggle {
  animation: wiggle 1s ease-in-out infinite;
}

@keyframes wiggle {
  0%, 7% {
    transform: rotateZ(0);
  }
  15% {
    transform: rotateZ(-15deg);
  }
  20% {
    transform: rotateZ(10deg);
  }
  25% {
    transform: rotateZ(-10deg);
  }
  30% {
    transform: rotateZ(6deg);
  }
  35% {
    transform: rotateZ(-4deg);
  }
  40%, 100% {
    transform: rotateZ(0);
  }
}

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

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

/* ===== PROGRESS ANIMATIONS ===== */
.progress-bar {
  width: 100%;
  height: 4px;
  background: var(--gray);
  border-radius: 2px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: var(--gradient-primary);
  border-radius: 2px;
  animation: progressFill 2s ease-out forwards;
}

@keyframes progressFill {
  from {
    width: 0%;
  }
  to {
    width: var(--progress-width, 100%);
  }
}

/* ===== MODAL ANIMATIONS ===== */
.modal-fade-in {
  animation: modalFadeIn 0.3s ease-out;
}

@keyframes modalFadeIn {
  from {
    opacity: 0;
    transform: scale(0.8);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

.modal-slide-in {
  animation: modalSlideIn 0.3s ease-out;
}

@keyframes modalSlideIn {
  from {
    opacity: 0;
    transform: translateY(-50px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ===== FORM ANIMATIONS ===== */
.form-shake {
  animation: formShake 0.5s ease-in-out;
}

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

.form-success {
  animation: formSuccess 0.6s ease-out;
}

@keyframes formSuccess {
  0% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.05);
  }
  100% {
    transform: scale(1);
  }
}

/* ===== NAVIGATION ANIMATIONS ===== */
.nav-slide-down {
  animation: navSlideDown 0.3s ease-out;
}

@keyframes navSlideDown {
  from {
    transform: translateY(-100%);
  }
  to {
    transform: translateY(0);
  }
}

.menu-item-animate {
  opacity: 0;
  transform: translateX(-20px);
  animation: menuItemAnimate 0.3s ease-out forwards;
}

@keyframes menuItemAnimate {
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* ===== PARALLAX EFFECTS ===== */
.parallax {
  transform: translateZ(0);
  will-change: transform;
}

.parallax-slow {
  transform: translateY(var(--parallax-offset, 0));
}

.parallax-fast {
  transform: translateY(calc(var(--parallax-offset, 0) * 0.5));
}

/* ===== STAGGER ANIMATIONS ===== */
.stagger-item {
  opacity: 0;
  transform: translateY(30px);
  animation: staggerFadeIn 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; }

@keyframes staggerFadeIn {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ===== LOADING STATES ===== */
.skeleton {
  background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
  background-size: 200% 100%;
  animation: skeletonLoading 1.5s infinite;
}

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

.skeleton-text {
  height: 1rem;
  margin-bottom: 0.5rem;
  border-radius: 4px;
}

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

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

.skeleton-card {
  padding: 1rem;
  border-radius: var(--border-radius);
}

/* ===== MICRO-INTERACTIONS ===== */
.ripple {
  position: relative;
  overflow: hidden;
}

.ripple::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.3);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

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

/* ===== PERFORMANCE OPTIMIZATIONS ===== */
.gpu-accelerated {
  transform: translateZ(0);
  will-change: transform;
}

.smooth-scroll {
  scroll-behavior: smooth;
}

/* ===== REDUCED MOTION SUPPORT ===== */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  
  .parallax,
  .parallax-slow,
  .parallax-fast {
    transform: none !important;
  }
}

/* ===== ANIMATION UTILITY CLASSES ===== */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s ease-out;
}

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

.delay-100 { animation-delay: 0.1s; }
.delay-200 { animation-delay: 0.2s; }
.delay-300 { animation-delay: 0.3s; }
.delay-400 { animation-delay: 0.4s; }
.delay-500 { animation-delay: 0.5s; }

.duration-100 { animation-duration: 0.1s; }
.duration-200 { animation-duration: 0.2s; }
.duration-300 { animation-duration: 0.3s; }
.duration-500 { animation-duration: 0.5s; }
.duration-700 { animation-duration: 0.7s; }
.duration-1000 { animation-duration: 1s; }

.ease-in { animation-timing-function: ease-in; }
.ease-out { animation-timing-function: ease-out; }
.ease-in-out { animation-timing-function: ease-in-out; }
.linear { animation-timing-function: linear; }