/* ===== APPLE-LEVEL MICRO-INTERACTIONS ===== */
/* Delightful animations and interactive states */

/* ===== BUTTON MICRO-INTERACTIONS ===== */

/* Spring Button Effect */
.btn-spring {
  position: relative;
  transform: scale(1);
  transition: transform var(--duration-200) var(--ease-spring);
}

.btn-spring:active {
  transform: scale(0.96);
}

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

/* Magnetic Button Effect (Desktop Only) */
@media (hover: hover) {
  .btn-magnetic {
    position: relative;
    transition: transform var(--duration-300) var(--ease-apple);
  }
  
  .btn-magnetic::before {
    content: '';
    position: absolute;
    inset: -10px;
    border-radius: inherit;
    pointer-events: none;
  }
}

/* Ripple Effect */
.btn-ripple {
  position: relative;
  overflow: hidden;
}

.btn-ripple::after {
  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 var(--duration-500) ease-out, 
              height var(--duration-500) ease-out,
              opacity var(--duration-500) ease-out;
  opacity: 0;
}

.btn-ripple:active::after {
  width: 300px;
  height: 300px;
  opacity: 1;
  transition: 0s;
}

/* Glow on Hover */
.btn-glow {
  transition: box-shadow var(--duration-300) var(--ease-apple);
}

.btn-glow:hover {
  box-shadow: var(--glow-primary-lg);
}

/* ===== CARD MICRO-INTERACTIONS ===== */

/* 3D Tilt Effect - Optimized */
.card-tilt {
  transform-style: preserve-3d;
  transition: transform var(--duration-450) var(--ease-apple);
  contain: layout style paint;
  will-change: auto;
}

.card-tilt:hover {
  transform: perspective(1000px) rotateX(2deg) rotateY(-2deg) translateZ(10px);
  will-change: transform;
}

/* Card Lift with Shadow - Optimized */
.card-lift {
  transition: transform var(--duration-450) var(--ease-apple),
              box-shadow var(--duration-450) var(--ease-apple);
  contain: layout style paint;
  will-change: auto;
}

.card-lift:hover {
  transform: translate3d(0, -8px, 0);
  box-shadow: var(--shadow-2xl), var(--glow-primary);
  will-change: transform;
}

/* Disable tilt on mobile for performance */
@media (max-width: 768px) {
  .card-tilt:hover {
    transform: translate3d(0, -3px, 0);
  }
}

/* Card Shine Effect */
.card-shine {
  position: relative;
  overflow: hidden;
}

.card-shine::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: linear-gradient(
    45deg,
    transparent 30%,
    rgba(255, 255, 255, 0.1) 50%,
    transparent 70%
  );
  transform: translateX(-100%) translateY(-100%);
  transition: transform var(--duration-700) var(--ease-apple);
}

.card-shine:hover::before {
  transform: translateX(50%) translateY(50%);
}

/* ===== LOADING STATES ===== */

/* Skeleton Loading */
@keyframes skeleton-loading {
  0% {
    background-position: -200% 0;
  }
  100% {
    background-position: 200% 0;
  }
}

.skeleton {
  background: linear-gradient(
    90deg,
    rgba(255, 255, 255, 0.05) 25%,
    rgba(255, 255, 255, 0.1) 50%,
    rgba(255, 255, 255, 0.05) 75%
  );
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s ease-in-out infinite;
  border-radius: var(--radius-md);
}

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

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

/* Spinner */
@keyframes spin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

.spinner {
  animation: spin 1s linear infinite;
}

/* Loading Dots */
@keyframes loading-dots {
  0%, 80%, 100% {
    opacity: 0.3;
    transform: scale(0.8);
  }
  40% {
    opacity: 1;
    transform: scale(1);
  }
}

.loading-dots span {
  display: inline-block;
  width: 8px;
  height: 8px;
  margin: 0 2px;
  background: currentColor;
  border-radius: 50%;
  animation: loading-dots 1.4s infinite ease-in-out both;
}

.loading-dots span:nth-child(1) {
  animation-delay: -0.32s;
}

.loading-dots span:nth-child(2) {
  animation-delay: -0.16s;
}

/* ===== TEXT ANIMATIONS ===== */

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

.fade-in-up {
  animation: fadeInUp var(--duration-700) var(--ease-apple);
}

/* Text Reveal */
@keyframes textReveal {
  0% {
    clip-path: inset(0 100% 0 0);
  }
  100% {
    clip-path: inset(0 0 0 0);
  }
}

.text-reveal {
  animation: textReveal var(--duration-1000) var(--ease-apple);
}

/* Typewriter Effect */
@keyframes typewriter {
  from {
    width: 0;
  }
  to {
    width: 100%;
  }
}

.typewriter {
  overflow: hidden;
  white-space: nowrap;
  animation: typewriter 2s steps(40) 1s forwards;
}

/* ===== SCROLL ANIMATIONS ===== */

/* Fade In on Scroll */
.scroll-fade {
  opacity: 0;
  transform: translateY(50px);
  transition: opacity var(--duration-700) var(--ease-apple),
              transform var(--duration-700) var(--ease-apple);
}

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

/* Slide In from Left */
.scroll-slide-left {
  opacity: 0;
  transform: translateX(-100px);
  transition: opacity var(--duration-700) var(--ease-apple),
              transform var(--duration-700) var(--ease-apple);
}

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

/* Slide In from Right */
.scroll-slide-right {
  opacity: 0;
  transform: translateX(100px);
  transition: opacity var(--duration-700) var(--ease-apple),
              transform var(--duration-700) var(--ease-apple);
}

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

/* Scale In */
.scroll-scale {
  opacity: 0;
  transform: scale(0.8);
  transition: opacity var(--duration-700) var(--ease-apple),
              transform var(--duration-700) var(--ease-apple);
}

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

/* ===== INPUT INTERACTIONS ===== */

/* Floating Label */
.input-group {
  position: relative;
}

.floating-label {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-dark-text-tertiary);
  font-size: var(--text-base);
  pointer-events: none;
  transition: all var(--duration-300) var(--ease-apple);
}

.input-group input:focus ~ .floating-label,
.input-group input:not(:placeholder-shown) ~ .floating-label {
  top: 0;
  font-size: var(--text-xs);
  background: var(--color-dark-bg);
  padding: 0 0.5rem;
}

/* Input Focus Glow */
.input-glow {
  transition: box-shadow var(--duration-300) var(--ease-apple),
              border-color var(--duration-300) var(--ease-apple);
}

.input-glow:focus {
  box-shadow: 0 0 0 3px rgba(208, 82, 20, 0.1);
  border-color: var(--color-primary-500);
}

/* Checkbox Animation */
.checkbox-animate {
  position: relative;
  appearance: none;
  width: 20px;
  height: 20px;
  border: 2px solid var(--color-dark-border);
  border-radius: var(--radius-sm);
  transition: all var(--duration-200) var(--ease-apple);
  cursor: pointer;
}

.checkbox-animate:checked {
  background: var(--gradient-primary);
  border-color: var(--color-primary-500);
}

.checkbox-animate:checked::after {
  content: '✓';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: white;
  font-size: 12px;
  animation: checkmark var(--duration-300) var(--ease-spring);
}

@keyframes checkmark {
  0% {
    transform: translate(-50%, -50%) scale(0);
  }
  50% {
    transform: translate(-50%, -50%) scale(1.2);
  }
  100% {
    transform: translate(-50%, -50%) scale(1);
  }
}

/* ===== PROGRESS INDICATORS ===== */

/* Progress Bar */
@keyframes progressBar {
  from {
    transform: scaleX(0);
  }
  to {
    transform: scaleX(1);
  }
}

.progress-bar {
  height: 4px;
  background: var(--color-dark-surface);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  background: var(--gradient-primary);
  transform-origin: left;
  animation: progressBar 1s var(--ease-apple) forwards;
}

/* Scroll Progress */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--gradient-primary);
  transform-origin: left;
  z-index: var(--z-max);
}

/* ===== MODAL ANIMATIONS ===== */

/* Modal Fade & Scale In */
@keyframes modalFadeIn {
  from {
    opacity: 0;
    transform: scale(0.95) translateY(-20px);
  }
  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

.modal-animate {
  animation: modalFadeIn var(--duration-450) var(--ease-apple);
}

/* Backdrop Fade */
@keyframes backdropFade {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

.backdrop-animate {
  animation: backdropFade var(--duration-300) var(--ease-apple);
}

/* ===== TOAST NOTIFICATIONS ===== */

/* Slide In from Right */
@keyframes toastSlideIn {
  from {
    transform: translateX(calc(100% + 20px));
  }
  to {
    transform: translateX(0);
  }
}

.toast-slide-in {
  animation: toastSlideIn var(--duration-450) var(--ease-apple);
}

/* Toast Shake (for errors) */
@keyframes shake {
  0%, 100% {
    transform: translateX(0);
  }
  25% {
    transform: translateX(-10px);
  }
  75% {
    transform: translateX(10px);
  }
}

.toast-shake {
  animation: shake var(--duration-300) var(--ease-apple);
}

/* ===== NAVIGATION TRANSITIONS ===== */

/* Menu Item Stagger */
.nav-item-stagger {
  opacity: 0;
  transform: translateY(-10px);
}

.nav-item-stagger.visible {
  animation: navItemAppear var(--duration-450) var(--ease-apple) forwards;
}

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

.nav-item-stagger:nth-child(1) { animation-delay: 0ms; }
.nav-item-stagger:nth-child(2) { animation-delay: 50ms; }
.nav-item-stagger:nth-child(3) { animation-delay: 100ms; }
.nav-item-stagger:nth-child(4) { animation-delay: 150ms; }
.nav-item-stagger:nth-child(5) { animation-delay: 200ms; }
.nav-item-stagger:nth-child(6) { animation-delay: 250ms; }

/* ===== HOVER UNDERLINE EFFECT ===== */

.hover-underline {
  position: relative;
  display: inline-block;
}

.hover-underline::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--gradient-primary);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform var(--duration-300) var(--ease-apple);
}

.hover-underline:hover::after {
  transform: scaleX(1);
  transform-origin: left;
}

/* ===== PARTICLE EFFECTS ===== */

@keyframes float {
  0%, 100% {
    transform: translateY(0) translateX(0);
  }
  50% {
    transform: translateY(-20px) translateX(10px);
  }
}

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

/* Stagger the animation for multiple particles */
.particle-float:nth-child(2) { animation-delay: 0.5s; }
.particle-float:nth-child(3) { animation-delay: 1s; }
.particle-float:nth-child(4) { animation-delay: 1.5s; }
.particle-float:nth-child(5) { animation-delay: 2s; }

/* ===== ACCESSIBILITY - Reduced Motion ===== */

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