/* Card Swap Animation */
.card-swap-section {
  padding: 5rem 0;
  position: relative;
  min-height: 600px;
  overflow: visible;
}

.card-swap-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
  gap: 4rem;
}

.card-swap-text {
  flex: 0 0 35%;
  max-width: 400px;
}

.card-swap-text h3 {
  font-size: 2rem;
  color: var(--title-color);
  font-weight: 600;
  margin-bottom: 1.5rem;
  line-height: 1.2;
}

.card-swap-text p {
  font-size: 1.1rem;
  color: var(--text-color);
  line-height: 1.8;
  margin-bottom: 1.5rem;
}

.card-swap-text .click-hint {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.95rem;
  color: var(--first-color);
  font-weight: 500;
  margin-top: 2rem;
}

.card-swap-text .click-hint i {
  font-size: 1.2rem;
  animation: bounce-right 2s ease-in-out infinite;
}

@keyframes bounce-right {
  0%, 100% { transform: translateX(0); }
  50% { transform: translateX(8px); }
}

.card-swap-wrapper {
  position: relative;
  flex: 0 0 65%;
  height: 600px;
  display: flex;
  justify-content: center;
  align-items: center;
}

.card-swap-container {
  position: relative;
  width: 500px;
  height: 400px;
  perspective: 900px;
  overflow: visible;
}

.swap-card {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 100%;
  height: 100%;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(20, 20, 30, 0.7);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  transform-style: preserve-3d;
  will-change: transform;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  cursor: pointer;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
  padding: 3rem 2rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: visible;
  --mouse-x: 50%;
  --mouse-y: 50%;
  --spotlight-color: rgba(255, 255, 255, 0.08);
  user-select: none;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

/* Spotlight effect */
.swap-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(
    circle 400px at var(--mouse-x) var(--mouse-y),
    var(--spotlight-color),
    transparent 80%
  );
  opacity: 0;
  transition: opacity 0.5s ease;
  pointer-events: none;
  z-index: 0;
}

.swap-card:hover::before {
  opacity: 0.8;
}

/* Ensure content stays above spotlight */
.swap-card > * {
  position: relative;
  z-index: 1;
}

.swap-card:hover {
  border-color: var(--first-color);
  box-shadow: 0 0 30px rgba(var(--hue), 70%, 50%, 0.3);
}

/* Click indicator */
.swap-card:active {
  transform: translateX(-50%) translateY(-50%) scale(0.98);
}

.white-mode .swap-card {
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(0, 0, 0, 0.1);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
  --spotlight-color: rgba(0, 0, 0, 0.05);
}

.swap-card__icon {
  display: block;
  font-size: 4rem;
  color: var(--first-color);
  margin-bottom: 1.5rem;
}

.swap-card__title {
  font-size: var(--h2-font-size);
  color: var(--title-color);
  margin-bottom: 1rem;
  font-weight: var(--font-semi-bold);
}

.swap-card__description {
  line-height: 1.6;
  font-size: 16px;
  color: var(--text-color);
  max-width: 400px;
}

/* Responsive */
@media (max-width: 1024px) {
  .card-swap-content {
    flex-direction: column;
    gap: 3rem;
    padding: 0 1.5rem;
  }

  .card-swap-text {
    flex: none;
    max-width: 100%;
    text-align: center;
  }

  .card-swap-text .click-hint {
    justify-content: center;
  }

  .card-swap-wrapper {
    flex: none;
    width: 100%;
  }
}

@media (max-width: 768px) {
  .card-swap-container {
    width: 380px;
    height: 320px;
  }

  .swap-card {
    padding: 2rem 1.5rem;
  }

  .swap-card__icon {
    font-size: 3rem;
  }

  .swap-card__title {
    font-size: 1.25rem;
  }

  .swap-card__description {
    font-size: 14px;
  }

  .card-swap-text h3 {
    font-size: 1.75rem;
  }

  .card-swap-text p {
    font-size: 1rem;
  }
}

@media (max-width: 480px) {
  .card-swap-container {
    width: 300px;
    height: 280px;
  }

  .swap-card {
    padding: 1.5rem 1rem;
  }

  .swap-card__icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
  }

  .swap-card__title {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
  }

  .swap-card__description {
    font-size: 13px;
  }

  .card-swap-section {
    min-height: 450px;
  }

  .card-swap-wrapper {
    height: 450px;
  }
}

/* Star Border Effect - Speed Light Streaks */
.swap-card .border-gradient-bottom,
.swap-card .border-gradient-top {
  position: absolute;
  width: 80px;
  height: 2px;
  opacity: 0;
  z-index: 10;
  pointer-events: none;
  background: linear-gradient(
    90deg,
    transparent,
    #ef4444 20%,
    #ff6b6b 50%,
    #ef4444 80%,
    transparent
  );
  box-shadow: 0 0 15px #ef4444, 0 0 30px rgba(239, 68, 68, 0.5);
  animation-play-state: paused;
  animation-fill-mode: forwards;
}

.swap-card .border-gradient-bottom {
  bottom: -1px;
  left: 0;
  animation: speed-light-bottom 1.2s ease-out;
}

.swap-card .border-gradient-top {
  top: -1px;
  right: 0;
  animation: speed-light-top 1.2s ease-out;
}

/* Activate speed lights when card goes to back */
.swap-card.star-border-active .border-gradient-bottom,
.swap-card.star-border-active .border-gradient-top {
  animation-play-state: running;
}

@keyframes speed-light-bottom {
  0% {
    left: 0;
    opacity: 0;
  }
  10% {
    opacity: 1;
  }
  90% {
    opacity: 1;
  }
  100% {
    left: calc(100% - 80px);
    opacity: 0;
  }
}

@keyframes speed-light-top {
  0% {
    right: 0;
    opacity: 0;
  }
  10% {
    opacity: 1;
  }
  90% {
    opacity: 1;
  }
  100% {
    right: calc(100% - 80px);
    opacity: 0;
  }
}