/* PREMIUM ANIMATIONS & TRANSITIONS LIBRARY */
/* ============================================ */

:root {
  --brand-blue: #4cbbdd;
  --transition-fast: 0.15s ease-out;
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
  --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.16);
  --shadow-xl: 0 20px 48px rgba(0, 0, 0, 0.2);
}

/* FADE IN ANIMATIONS */
@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 fadeInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

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

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

/* HOVER ANIMATIONS */
@keyframes lift {
  from {
    transform: translateY(0);
  }
  to {
    transform: translateY(-4px);
  }
}

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

/* PULSE & GLOW */
@keyframes pulse {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.8;
  }
}

@keyframes glow {
  0%,
  100% {
    box-shadow: 0 0 20px rgba(76, 187, 221, 0.3);
  }
  50% {
    box-shadow: 0 0 30px rgba(76, 187, 221, 0.5);
  }
}

/* BORDER ANIMATIONS */
@keyframes borderSlide {
  from {
    background-position: 100% center;
  }
  to {
    background-position: 0% center;
  }
}

/* BUTTON PRESS ANIMATION */
@keyframes buttonPress {
  0% {
    transform: scale(1);
  }
  50% {
    transform: scale(0.98);
  }
  100% {
    transform: scale(1);
  }
}

/* CHECKBOX ANIMATIONS */
@keyframes checkmark {
  0% {
    transform: scale(0);
    opacity: 0;
  }
  50% {
    transform: scale(1.2);
  }
  100% {
    transform: scale(1);
    opacity: 1;
  }
}

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

/* UTILITY ANIMATION CLASSES */
.fade-in {
  animation: fadeIn var(--transition-normal) ease-out;
}
.fade-in-up {
  animation: fadeInUp var(--transition-normal) ease-out;
}
.fade-in-down {
  animation: fadeInDown var(--transition-normal) ease-out;
}
.fade-in-left {
  animation: fadeInLeft var(--transition-normal) ease-out;
}
.fade-in-right {
  animation: fadeInRight var(--transition-normal) ease-out;
}
.scale-in {
  animation: scaleIn var(--transition-normal) ease-out;
}
.pulse {
  animation: pulse 2s ease-in-out infinite;
}
.slide-down {
  animation: slideDown var(--transition-normal) ease-out;
}

/* STAGGERED ANIMATIONS */
.stagger-1 {
  animation-delay: 0.1s;
}
.stagger-2 {
  animation-delay: 0.2s;
}
.stagger-3 {
  animation-delay: 0.3s;
}
.stagger-4 {
  animation-delay: 0.4s;
}
.stagger-5 {
  animation-delay: 0.5s;
}
.stagger-6 {
  animation-delay: 0.6s;
}

/* SMOOTH TRANSITIONS FOR ALL INTERACTIVE ELEMENTS */
a,
button {
  transition: all var(--transition-normal);
}

/* BETTER BUTTON STYLING */
button:active:not(:disabled),
.btn:active {
  animation: buttonPress 0.2s ease-out;
}

/* INPUT FOCUS STATES */
input:focus,
select:focus,
textarea:focus {
  animation: slideDown var(--transition-fast);
}

/* SMOOTH COLOR TRANSITIONS */
*:not(svg) {
  transition-property: background-color, border-color, color, box-shadow;
  transition-duration: var(--transition-fast);
  transition-timing-function: ease-out;
}

/* ENHANCED CARD SHADOWS */
.card,
[class*="card"] {
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-normal), transform var(--transition-normal);
}

.card:hover,
[class*="card"]:hover {
  box-shadow: var(--shadow-lg);
}

/* SMOOTH FORM TRANSITIONS */
.form-group {
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.form-group:focus-within {
  transform: translateX(2px);
}

/* TEXT SELECTION ENHANCEMENT */
::selection {
  background: var(--brand-blue);
  color: #000;
}

::-moz-selection {
  background: var(--brand-blue);
  color: #000;
}

/* SMOOTH SCROLL */
html {
  scroll-behavior: smooth;
}

/* ENHANCED FOCUS STATES FOR ACCESSIBILITY */
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--brand-blue);
  outline-offset: 2px;
}

/* ACTIVE STATE ENHANCEMENT */
.active {
  animation: none;
  transition: all var(--transition-normal);
}

/* LOADING STATE */
.loading {
  animation: pulse 1.5s ease-in-out infinite;
}

/* LOADING SPINNER */
.spinner {
  animation: spin 1s linear infinite;
}

/* RIPPLE EFFECT FOR BUTTONS */
@keyframes ripple {
  from {
    width: 0;
    height: 0;
    opacity: 0.5;
  }
  to {
    width: 100px;
    height: 100px;
    opacity: 0;
  }
}

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

.ripple-effect::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  background: rgba(255, 255, 255, 0.5);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
}

.ripple-effect:active::after {
  animation: ripple 0.6s ease-out;
}

/* SMOOTH MODAL ANIMATIONS */
@keyframes modalSlideIn {
  from {
    opacity: 0;
    transform: translateY(30px) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.modal {
  animation: modalSlideIn var(--transition-smooth);
}

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

.modal-backdrop {
  animation: backdropFade var(--transition-normal);
}

/* SMOOTH NAVIGATION TRANSITIONS */
nav a {
  position: relative;
  overflow: hidden;
}

nav a::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--brand-blue);
  transition: width var(--transition-normal);
}

nav a:hover::after {
  width: 100%;
}

/* SMOOTH LINK UNDERLINES */
.text-link {
  position: relative;
  text-decoration: none;
}

.text-link::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1px;
  background: currentColor;
  transition: width var(--transition-normal);
}

.text-link:hover::after {
  width: 100%;
}

/* IMAGE HOVER ZOOM */
.image-hover {
  overflow: hidden;
}

.image-hover img {
  transition: transform var(--transition-smooth), filter var(--transition-smooth);
}

.image-hover:hover img {
  transform: scale(1.05);
  filter: brightness(1.05);
}

/* BADGE ANIMATIONS */
.badge {
  animation: scaleIn var(--transition-normal);
}

/* LIST ITEM STAGGER ANIMATIONS */
li {
  animation: fadeInUp var(--transition-normal);
}

/* Manually expanded staggered animation for list items */
li:nth-child(1) {
  animation-delay: 0.05s;
}
li:nth-child(2) {
  animation-delay: 0.1s;
}
li:nth-child(3) {
  animation-delay: 0.15s;
}
li:nth-child(4) {
  animation-delay: 0.2s;
}
li:nth-child(5) {
  animation-delay: 0.25s;
}
li:nth-child(6) {
  animation-delay: 0.3s;
}
li:nth-child(7) {
  animation-delay: 0.35s;
}
li:nth-child(8) {
  animation-delay: 0.4s;
}
li:nth-child(9) {
  animation-delay: 0.45s;
}
li:nth-child(10) {
  animation-delay: 0.5s;
}
li:nth-child(11) {
  animation-delay: 0.55s;
}
li:nth-child(12) {
  animation-delay: 0.6s;
}
li:nth-child(13) {
  animation-delay: 0.65s;
}
li:nth-child(14) {
  animation-delay: 0.7s;
}
li:nth-child(15) {
  animation-delay: 0.75s;
}
li:nth-child(16) {
  animation-delay: 0.8s;
}
li:nth-child(17) {
  animation-delay: 0.85s;
}
li:nth-child(18) {
  animation-delay: 0.9s;
}
li:nth-child(19) {
  animation-delay: 0.95s;
}
li:nth-child(20) {
  animation-delay: 1s;
}

/* ENHANCED FORM INPUT STYLING */
input[type="text"],
input[type="email"],
input[type="password"],
input[type="search"],
select,
textarea {
  transition: all var(--transition-fast);
  background-position: right bottom;
  background-repeat: no-repeat;
  background-size: 100% 3px;
  background-image: linear-gradient(to right, transparent, transparent 0%, var(--brand-blue) 0%, var(--brand-blue));
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="password"]:focus,
input[type="search"]:focus,
select:focus,
textarea:focus {
  background-position: left bottom;
}

/* CHECKBOX CUSTOM ANIMATION */
input[type="checkbox"]:checked {
  animation: checkmark var(--transition-normal);
}

/* SMOOTH PAGE TRANSITIONS */
body.page-enter {
  animation: fadeIn var(--transition-normal);
}

/* ENHANCED SCROLLBAR */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
  background: var(--brand-blue);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: #0a9cd0;
}

/* SMOOTH GRADIENT ANIMATIONS */
@keyframes gradientShift {
  0% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
  100% {
    background-position: 0% 50%;
  }
}

.gradient-animated {
  background-size: 200% 200%;
  animation: gradientShift 3s ease infinite;
}

/* SMOOTH COLLAPSE/EXPAND */
@keyframes expandDown {
  from {
    opacity: 0;
    transform: scaleY(0);
    transform-origin: top;
  }
  to {
    opacity: 1;
    transform: scaleY(1);
  }
}

.collapse-enter {
  animation: expandDown var(--transition-smooth);
}

/* ENHANCED PRODUCT CARD ANIMATIONS */
.product-card {
  transform-origin: center bottom;
  transition: all var(--transition-normal);
}

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

/* SMOOTH PRICE UPDATES */
.price-update {
  animation: fadeIn var(--transition-fast);
}

/* TAB ANIMATIONS */
.tab-enter {
  animation: fadeInUp var(--transition-normal);
}

/* BREADCRUMB ANIMATIONS */
.breadcrumb li {
  animation: fadeInLeft var(--transition-normal);
}

/* SUCCESS/ERROR STATE ANIMATIONS */
@keyframes successPulse {
  0%,
  100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.05);
  }
}

.success-state {
  animation: successPulse 0.6s ease-out;
}

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

.error-state {
  animation: errorShake 0.6s ease-in-out;
}

/* NOTICE ANIMATIONS */
@keyframes slideInNotice {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.notice {
  animation: slideInNotice var(--transition-normal);
}

/* SMOOTH TOOLTIP */
@keyframes tooltipSlideIn {
  from {
    opacity: 0;
    transform: translateY(-5px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.tooltip {
  animation: tooltipSlideIn var(--transition-fast);
}

/* HERO SECTION ANIMATIONS */
.hero-content {
  animation: fadeInUp var(--transition-smooth) ease-out;
}

.hero-content h1 {
  animation: fadeInUp var(--transition-smooth) ease-out 0.1s backwards;
}

.hero-content p {
  animation: fadeInUp var(--transition-smooth) ease-out 0.2s backwards;
}

/* CTA BUTTON PREMIUM HOVER */
.cta-btn,
.btn-primary,
.action-btn {
  position: relative;
  overflow: hidden;
}

.cta-btn::before,
.btn-primary::before,
.action-btn::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: rgba(255, 255, 255, 0.1);
  transition: left var(--transition-normal);
  z-index: -1;
}

.cta-btn:hover::before,
.btn-primary:hover::before,
.action-btn:hover::before {
  left: 100%;
}

/* RESPONSIVE ANIMATIONS - REDUCE ON MOBILE */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

@media (max-width: 768px) {
  nav a::after,
  .text-link::after {
    display: none;
  }

  .product-card:hover {
    transform: translateY(-4px);
  }
}