/* ========================================
   ANIMATIONS - SPBX
   ======================================== */

/* Base Animation Variables */
:root {
  --animation-fast: 0.2s;
  --animation-normal: 0.4s;
  --animation-slow: 0.6s;
  --animation-slower: 0.8s;
  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-out-back: cubic-bezier(0.34, 1.56, 0.64, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
}

/* ========================================
   KEYFRAMES
   ======================================== */

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

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  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 scaleIn {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

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

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

@keyframes glow {
  0%, 100% { box-shadow: 0 0 5px rgba(200, 16, 46, 0.3); }
  50% { box-shadow: 0 0 20px rgba(200, 16, 46, 0.5); }
}

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

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

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

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

@keyframes priceFlash {
  0% { background-color: transparent; }
  50% { background-color: rgba(16, 185, 129, 0.2); }
  100% { background-color: transparent; }
}

@keyframes priceFlashDown {
  0% { background-color: transparent; }
  50% { background-color: rgba(239, 68, 68, 0.2); }
  100% { background-color: transparent; }
}

@keyframes ripple {
  0% {
    transform: scale(0);
    opacity: 0.5;
  }
  100% {
    transform: scale(4);
    opacity: 0;
  }
}

@keyframes gradientShift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-5px); }
}

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

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

/* Elements hidden before reveal */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity var(--animation-slow) var(--ease-out-expo),
              transform var(--animation-slow) var(--ease-out-expo);
}

.reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}

/* Staggered children animations */
.reveal-stagger > * {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--animation-normal) var(--ease-out-expo),
              transform var(--animation-normal) var(--ease-out-expo);
}

.reveal-stagger.revealed > *:nth-child(1) { transition-delay: 0.1s; }
.reveal-stagger.revealed > *:nth-child(2) { transition-delay: 0.2s; }
.reveal-stagger.revealed > *:nth-child(3) { transition-delay: 0.3s; }
.reveal-stagger.revealed > *:nth-child(4) { transition-delay: 0.4s; }
.reveal-stagger.revealed > *:nth-child(5) { transition-delay: 0.5s; }
.reveal-stagger.revealed > *:nth-child(6) { transition-delay: 0.6s; }

.reveal-stagger.revealed > * {
  opacity: 1;
  transform: translateY(0);
}

/* Scale reveal */
.reveal-scale {
  opacity: 0;
  transform: scale(0.9);
  transition: opacity var(--animation-slow) var(--ease-out-expo),
              transform var(--animation-slow) var(--ease-out-back);
}

.reveal-scale.revealed {
  opacity: 1;
  transform: scale(1);
}

/* ========================================
   HERO SECTION ANIMATIONS
   ======================================== */

.hero__title {
  animation: fadeInUp var(--animation-slower) var(--ease-out-expo);
}

.hero__description {
  animation: fadeInUp var(--animation-slower) var(--ease-out-expo) 0.2s both;
}

.hero__actions {
  animation: fadeInUp var(--animation-slower) var(--ease-out-expo) 0.4s both;
}

.hero__stats {
  animation: fadeInUp var(--animation-slower) var(--ease-out-expo) 0.6s both;
}

.market-widget {
  animation: fadeInRight var(--animation-slower) var(--ease-out-expo) 0.3s both;
}

/* Subtle gradient animation for hero background */
.hero::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 30% 70%, rgba(200, 16, 46, 0.1) 0%, transparent 50%);
  animation: pulse 8s ease-in-out infinite;
  pointer-events: none;
  z-index: 0;
}

/* ========================================
   BUTTON ANIMATIONS
   ======================================== */

.btn {
  position: relative;
  overflow: hidden;
  transition: all var(--animation-fast) var(--ease-out-expo);
}

.btn::after {
  content: '';
  position: absolute;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  background: radial-gradient(circle, rgba(255,255,255,0.3) 0%, transparent 60%);
  transform: scale(0);
  opacity: 0;
  transition: transform 0.5s, opacity 0.3s;
  pointer-events: none;
}

.btn:active::after {
  transform: scale(2);
  opacity: 0;
  transition: 0s;
}

.btn--primary {
  transition: transform var(--animation-fast) var(--ease-out-expo),
              box-shadow var(--animation-fast) var(--ease-out-expo);
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(200, 16, 46, 0.35);
}

.btn--primary:active {
  transform: translateY(0);
}

/* CTA button glow effect */
.cta .btn--primary {
  animation: glow 3s ease-in-out infinite;
}

/* ========================================
   CARD ANIMATIONS
   ======================================== */

.feature-card,
.security-card {
  transition: transform var(--animation-normal) var(--ease-out-expo),
              box-shadow var(--animation-normal) var(--ease-out-expo),
              border-color var(--animation-normal) var(--ease-out-expo);
}

.feature-card:hover,
.security-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

/* Icon animation on card hover */
.feature-card__icon,
.security-card__icon {
  transition: transform var(--animation-normal) var(--ease-out-back);
}

.feature-card:hover .feature-card__icon,
.security-card:hover .security-card__icon {
  transform: scale(1.1);
}

/* Security card icon SVG animation */
.security-card__icon svg {
  transition: transform var(--animation-normal) var(--ease-out-expo);
}

.security-card:hover .security-card__icon svg {
  transform: rotate(5deg) scale(1.1);
}

/* ========================================
   STEP CARDS (How to Start)
   ======================================== */

.step-card__number {
  transition: transform var(--animation-normal) var(--ease-out-back),
              box-shadow var(--animation-normal) var(--ease-out-expo);
}

.step-card:hover .step-card__number {
  transform: scale(1.1);
  box-shadow: 0 12px 30px rgba(200, 16, 46, 0.4);
}

/* Animated line between steps */
.how-to-start__grid::before {
  animation: drawLine 1.5s var(--ease-out-expo) 0.5s both;
}

/* ========================================
   MARKET WIDGET ANIMATIONS
   ======================================== */

.market-widget__item {
  transition: background-color var(--animation-fast) ease;
}

.market-widget__item:hover {
  background-color: rgba(255, 255, 255, 0.05);
}

/* Crypto icon subtle animation */
.market-widget__icon,
.market-widget__pair img {
  transition: transform var(--animation-normal) var(--ease-out-expo);
}

.market-widget__item:hover .market-widget__icon,
.market-widget__item:hover .market-widget__pair img {
  transform: rotate(10deg) scale(1.1);
}

/* Price update flash animation classes */
.price-flash-up {
  animation: priceFlash 0.5s ease;
}

.price-flash-down {
  animation: priceFlashDown 0.5s ease;
}

/* Change badge pulse */
.market-widget__change {
  transition: transform var(--animation-fast) ease;
}

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

/* ========================================
   TABLE ANIMATIONS
   ======================================== */

.data-table tbody tr {
  transition: background-color var(--animation-fast) ease,
              transform var(--animation-fast) ease;
}

.data-table tbody tr:hover {
  background-color: var(--bg-hover);
  transform: scale(1.01);
}

.data-table tbody tr td:first-child img {
  transition: transform var(--animation-normal) var(--ease-out-expo);
}

.data-table tbody tr:hover td:first-child img {
  transform: rotate(10deg) scale(1.15);
}

/* ========================================
   STATS BANNER ANIMATIONS
   ======================================== */

.stats-banner__value {
  transition: transform var(--animation-normal) var(--ease-out-expo);
}

.stats-banner__item:hover .stats-banner__value {
  transform: scale(1.1);
}

/* Counter animation class */
.counter-animated {
  animation: countUp var(--animation-normal) var(--ease-out-expo);
}

/* ========================================
   FAQ ACCORDION ANIMATIONS
   ======================================== */

.faq-item {
  transition: border-color var(--animation-fast) ease,
              box-shadow var(--animation-fast) ease;
}

.faq-item:hover {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.faq-item__icon {
  transition: transform var(--animation-normal) var(--ease-out-expo);
}

.faq-item--active .faq-item__icon {
  transform: rotate(180deg);
}

.faq-item__answer {
  transition: max-height var(--animation-normal) var(--ease-out-expo);
}

.faq-item__answer-content {
  animation: fadeIn var(--animation-fast) ease;
}

/* ========================================
   CTA SECTION ANIMATIONS
   ======================================== */

.cta {
  background-size: 200% 200%;
  animation: gradientShift 10s ease infinite;
}

/* ========================================
   HEADER & NAVIGATION ANIMATIONS
   ======================================== */

.header {
  transition: background-color var(--animation-fast) ease,
              box-shadow var(--animation-fast) ease;
}

.header__nav-link {
  position: relative;
  transition: color var(--animation-fast) ease;
}

.header__nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-primary);
  transition: width var(--animation-normal) var(--ease-out-expo);
}

.header__nav-link:hover::after,
.header__nav-link--active::after {
  width: 100%;
}

/* Mobile nav animation */
.mobile-nav {
  transition: transform var(--animation-normal) var(--ease-out-expo),
              opacity var(--animation-normal) ease;
  transform: translateY(-10px);
  opacity: 0;
  pointer-events: none;
}

.mobile-nav--open {
  transform: translateY(0);
  opacity: 1;
  pointer-events: auto;
}

/* ========================================
   FOOTER ANIMATIONS
   ======================================== */

.footer__link {
  transition: color var(--animation-fast) ease,
              transform var(--animation-fast) ease;
  display: inline-block;
}

.footer__link:hover {
  color: var(--color-primary);
  transform: translateX(4px);
}

/* ========================================
   LOADING & SKELETON ANIMATIONS
   ======================================== */

.skeleton {
  background: linear-gradient(90deg, 
    var(--color-gray-200) 25%, 
    var(--color-gray-100) 50%, 
    var(--color-gray-200) 75%
  );
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
}

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

.animate-fade-in {
  animation: fadeIn var(--animation-normal) var(--ease-out-expo);
}

.animate-fade-in-up {
  animation: fadeInUp var(--animation-normal) var(--ease-out-expo);
}

.animate-fade-in-down {
  animation: fadeInDown var(--animation-normal) var(--ease-out-expo);
}

.animate-scale-in {
  animation: scaleIn var(--animation-normal) var(--ease-out-back);
}

.animate-bounce {
  animation: bounce 1s ease infinite;
}

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

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

/* Animation delay utilities */
.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; }

/* ========================================
   SMOOTH SCROLL
   ======================================== */

html {
  scroll-behavior: smooth;
}

/* ========================================
   REDUCED MOTION - Accessibility
   ======================================== */

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