/* ============================================
   MOTION SYSTEM
   ============================================ */

/* Motion Tokens */
:root {
  --motion-duration-instant: 100ms;
  --motion-duration-fast: 150ms;
  --motion-duration-base: 200ms;
  --motion-duration-slow: 240ms;
  --motion-ease-out: cubic-bezier(0.2, 0, 0, 1);
  --motion-ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
  --motion-ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --motion-origin-top: top;
  --motion-origin-bottom: bottom;
  --motion-origin-center: center;
}

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

/* ============================================
   BASE TRANSITIONS
   ============================================ */

.motion-interactive {
  transition: transform var(--motion-duration-fast) var(--motion-ease-out),
              opacity var(--motion-duration-fast) var(--motion-ease-out),
              box-shadow var(--motion-duration-fast) var(--motion-ease-out);
  will-change: transform;
}

.motion-interactive:hover {
  transform: translateY(-2px);
}

.motion-interactive:active {
  transform: translateY(0);
  transition-duration: var(--motion-duration-instant);
}

.motion-scale {
  transition: transform var(--motion-duration-fast) var(--motion-ease-out);
  will-change: transform;
}

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

.motion-scale:active {
  transform: scale(0.98);
}

/* ============================================
   KEYFRAME ANIMATIONS
   ============================================ */

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

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

@keyframes slideInUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideInDown {
  from {
    opacity: 0;
    transform: translateY(-24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-24px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(24px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.95);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes scaleOut {
  from {
    opacity: 1;
    transform: scale(1);
  }
  to {
    opacity: 0;
    transform: scale(0.95);
  }
}

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

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

@keyframes shimmer {
  0% { background-position: -1000px 0; }
  100% { background-position: 1000px 0; }
}

@keyframes progressIndeterminate {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(400%); }
}

@keyframes bounceSubtle {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-4px); }
}

@keyframes checkmark {
  0% { stroke-dashoffset: 100; }
  100% { stroke-dashoffset: 0; }
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-8px); }
  75% { transform: translateX(8px); }
}

/* ============================================
   UTILITY CLASSES
   ============================================ */

.animate-fadeIn {
  animation: fadeIn var(--motion-duration-base) var(--motion-ease-out);
}

.animate-slideInUp {
  animation: slideInUp var(--motion-duration-base) var(--motion-ease-out);
}

.animate-slideInDown {
  animation: slideInDown var(--motion-duration-base) var(--motion-ease-out);
}

.animate-slideInLeft {
  animation: slideInLeft var(--motion-duration-base) var(--motion-ease-out);
}

.animate-slideInRight {
  animation: slideInRight var(--motion-duration-base) var(--motion-ease-out);
}

.animate-scaleIn {
  animation: scaleIn var(--motion-duration-base) var(--motion-ease-out);
}

.animate-stagger > * {
  animation: slideInUp var(--motion-duration-base) var(--motion-ease-out);
  animation-fill-mode: both;
}

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

/* ============================================
   COMPONENT ANIMATIONS
   ============================================ */

.btn,
.theme_btn,
button {
  transition: all var(--motion-duration-fast) var(--motion-ease-out);
}

.btn:hover:not(:disabled),
.theme_btn:hover:not(:disabled),
button:hover:not(:disabled) {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.btn:active:not(:disabled),
.theme_btn:active:not(:disabled),
button:active:not(:disabled) {
  transform: translateY(0);
  transition-duration: var(--motion-duration-instant);
}

.btn:disabled,
.theme_btn:disabled,
button:disabled {
  transition: opacity var(--motion-duration-fast);
}

a {
  transition: color var(--motion-duration-fast) var(--motion-ease-out),
              opacity var(--motion-duration-fast) var(--motion-ease-out);
}

.card,
.service-item,
.portfolio-item,
.blog-item,
.service_box,
.portfolio_box,
.blog_box {
  transition: transform var(--motion-duration-base) var(--motion-ease-out),
              box-shadow var(--motion-duration-base) var(--motion-ease-out);
}

.card:hover,
.service-item:hover,
.portfolio-item:hover,
.blog-item:hover,
.service_box:hover,
.portfolio_box:hover,
.blog_box:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.12);
}

input,
textarea,
select {
  transition: border-color var(--motion-duration-fast) var(--motion-ease-out),
              box-shadow var(--motion-duration-fast) var(--motion-ease-out),
              background-color var(--motion-duration-fast) var(--motion-ease-out);
}

img {
  transition: opacity var(--motion-duration-base) var(--motion-ease-out),
              transform var(--motion-duration-base) var(--motion-ease-out);
}

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

.modal-overlay {
  animation: fadeIn var(--motion-duration-base) var(--motion-ease-out);
}

.modal-overlay.closing {
  animation: fadeOut var(--motion-duration-base) var(--motion-ease-out);
}

.modal-content {
  animation: scaleIn var(--motion-duration-base) var(--motion-ease-out);
}

.modal-content.closing {
  animation: scaleOut var(--motion-duration-base) var(--motion-ease-out);
}

.drawer-left {
  animation: slideInLeft var(--motion-duration-base) var(--motion-ease-out);
}

.drawer-right {
  animation: slideInRight var(--motion-duration-base) var(--motion-ease-out);
}

.drawer-top {
  animation: slideInDown var(--motion-duration-base) var(--motion-ease-out);
}

.drawer-bottom {
  animation: slideInUp var(--motion-duration-base) var(--motion-ease-out);
}

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

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

.pulse-loader {
  animation: pulse 1.5s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

.pulse-loader-dot {
  animation: pulse 1.5s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

.pulse-loader-dot:nth-child(1) { animation-delay: 0ms; }
.pulse-loader-dot:nth-child(2) { animation-delay: 150ms; }
.pulse-loader-dot:nth-child(3) { animation-delay: 300ms; }

.skeleton {
  background: linear-gradient(90deg, #f0f0f0 0%, #e0e0e0 50%, #f0f0f0 100%);
  background-size: 1000px 100%;
  animation: shimmer 2s infinite linear;
}

.progress-bar {
  transition: width var(--motion-duration-slow) var(--motion-ease-out);
}

.progress-indeterminate {
  position: relative;
  overflow: hidden;
}

.progress-indeterminate::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  width: 25%;
  animation: progressIndeterminate 1.5s cubic-bezier(0.4, 0, 0.2, 1) infinite;
}

/* ============================================
   FEEDBACK ANIMATIONS
   ============================================ */

.feedback-success {
  animation: scaleIn var(--motion-duration-base) var(--motion-ease-spring);
}

.checkmark-icon {
  stroke-dasharray: 100;
  animation: checkmark var(--motion-duration-slow) var(--motion-ease-out) forwards;
}

.feedback-error {
  animation: shake var(--motion-duration-base) var(--motion-ease-out);
}

.alert {
  animation: slideInDown var(--motion-duration-base) var(--motion-ease-out);
}

.alert.dismissing {
  animation: slideInUp var(--motion-duration-base) var(--motion-ease-out);
}

.input-error {
  animation: shake var(--motion-duration-base) var(--motion-ease-out);
}

.input-error input {
  border-color: #dc2626;
}

.validation-message {
  animation: slideInUp var(--motion-duration-fast) var(--motion-ease-out);
}

/* ============================================
   PAGE TRANSITIONS
   ============================================ */

.page-transition-enter {
  animation: fadeIn var(--motion-duration-slow) var(--motion-ease-out);
}

.page-transition-enter-content {
  animation: slideInUp var(--motion-duration-slow) var(--motion-ease-out);
}

.page-transition-exit {
  animation: fadeOut var(--motion-duration-base) var(--motion-ease-out);
}

/* Section Scroll Reveal */
.scroll-reveal {
  opacity: 1;
  transform: translateY(0);
  transition: opacity var(--motion-duration-slow) var(--motion-ease-out),
              transform var(--motion-duration-slow) var(--motion-ease-out);
}

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

/* Stagger delays for child elements in scroll-reveal containers */
.scroll-reveal.visible > *:nth-child(1) { transition-delay: 0ms; }
.scroll-reveal.visible > *:nth-child(2) { transition-delay: 50ms; }
.scroll-reveal.visible > *:nth-child(3) { transition-delay: 100ms; }
.scroll-reveal.visible > *:nth-child(4) { transition-delay: 150ms; }
.scroll-reveal.visible > *:nth-child(5) { transition-delay: 200ms; }
.scroll-reveal.visible > *:nth-child(6) { transition-delay: 250ms; }
.scroll-reveal.visible > *:nth-child(7) { transition-delay: 300ms; }
.scroll-reveal.visible > *:nth-child(8) { transition-delay: 350ms; }
.scroll-reveal.visible > *:nth-child(9) { transition-delay: 400ms; }
.scroll-reveal.visible > *:nth-child(10) { transition-delay: 450ms; }

/* Grid/Column layouts with scroll-reveal items */
.row > .scroll-reveal:nth-child(1) { transition-delay: 0ms; }
.row > .scroll-reveal:nth-child(2) { transition-delay: 100ms; }
.row > .scroll-reveal:nth-child(3) { transition-delay: 200ms; }
.row > .scroll-reveal:nth-child(4) { transition-delay: 300ms; }
.row > .scroll-reveal:nth-child(5) { transition-delay: 400ms; }
.row > .scroll-reveal:nth-child(6) { transition-delay: 500ms; }
.row > .scroll-reveal:nth-child(7) { transition-delay: 600ms; }
.row > .scroll-reveal:nth-child(8) { transition-delay: 700ms; }
.row > .scroll-reveal:nth-child(9) { transition-delay: 800ms; }
.row > .scroll-reveal:nth-child(10) { transition-delay: 900ms; }
.row > .scroll-reveal:nth-child(11) { transition-delay: 1000ms; }
.row > .scroll-reveal:nth-child(12) { transition-delay: 1100ms; }

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

.icon-hover {
  transition: transform var(--motion-duration-fast) var(--motion-ease-out);
}

.icon-hover:hover {
  transform: scale(1.1);
}

.ripple {
  position: relative;
  overflow: hidden;
}

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

.ripple:active::after {
  width: 200px;
  height: 200px;
  opacity: 1;
  transition-duration: 0s;
}

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

.notification-badge {
  animation: bounceSubtle 0.5s var(--motion-ease-spring);
}

/* ============================================
   PERFORMANCE OPTIMIZATIONS
   ============================================ */

.gpu-accelerate {
  transform: translateZ(0);
  backface-visibility: hidden;
  perspective: 1000px;
}

.contain-paint {
  contain: paint;
}

.will-change-transform {
  will-change: transform;
}

.will-change-opacity {
  will-change: opacity;
}