/* Flip Card Styles */

.flip-card {
  background-color: transparent;
  perspective: 1000px;
  height: 100%;
  min-height: 350px;
  cursor: pointer;
  /* Mobile: Remove tap highlight and improve touch response */
  -webkit-tap-highlight-color: transparent;
  /* Prevent text selection on tap */
  -webkit-user-select: none;
  -moz-user-select: none;
  user-select: none;
  /* Improve touch action */
  touch-action: manipulation;
}

.flip-card-inner {
  position: relative;
  width: 100%;
  height: 100%;
  min-height: 350px;
  text-align: left;
  transition: transform 0.6s;
  transform-style: preserve-3d;
}

/* Click-based flip for both desktop and mobile */
.flip-card.active .flip-card-inner {
  transform: rotateY(180deg);
}

.flip-card-front,
.flip-card-back {
  position: absolute;
  width: 100%;
  height: 100%;
  min-height: 350px;
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
  background: rgba(26, 31, 58, 0.8);
  padding: 2rem;
  border-radius: 10px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.3);
  border: 1px solid rgba(74, 158, 255, 0.2);
  display: flex;
  flex-direction: column;
}

.flip-card-back {
  background: rgba(26, 31, 58, 0.98);
}

.flip-card-front {
  z-index: 2;
  transform: rotateY(0deg);
}

.flip-card-back {
  transform: rotateY(180deg);
  z-index: 1;
  border: 1px solid rgba(0, 212, 255, 0.3);
}

/* Active state visibility */
.flip-card.active .flip-card-front {
  visibility: hidden;
}

.flip-card.active .flip-card-back {
  visibility: visible;
}

.flip-card-front h3,
.flip-card-back h3 {
  color: var(--primary);
  margin-bottom: 1.5rem;
  font-size: 1.5rem;
}

.flip-card-back h3 {
  color: var(--secondary);
}

.flip-card-front p,
.flip-card-back p {
  color: var(--gray);
  margin-bottom: 1rem;
  line-height: 1.6;
}

.flip-card-front ul,
.flip-card-back ul {
  list-style: none;
  padding: 0;
  margin: 0;
  flex-grow: 1;
}

.flip-card-front ul li,
.flip-card-back ul li {
  padding: 0.5rem 0;
  padding-left: 1.5rem;
  position: relative;
  line-height: 1.6;
  color: var(--text);
}

.flip-card-front ul li:before {
  content: "💭 ";
  color: #ffffff;
  font-weight: bold;
  font-size: 1rem;
  position: absolute;
  left: 0;
  top: 0.5rem;
}

.flip-card-back ul li:before {
  content: "✓ ";
  color: #28a745;
  font-weight: bold;
  font-size: 1.2rem;
  position: absolute;
  left: 0;
  top: 0.4rem;
}

.flip-indicator {
  color: var(--primary);
  font-size: 0.85rem;
  opacity: 0.7;
  font-weight: 500;
  text-decoration: none;
  transition: opacity 0.3s ease, color 0.3s ease;
  display: inline-block;
}

.flip-indicator:hover {
  opacity: 1;
  color: var(--primary-light);
  text-decoration: underline;
}

.flip-card-back .flip-indicator {
  color: var(--secondary);
}

.flip-card-back .flip-indicator:hover {
  color: var(--secondary);
  opacity: 1;
  text-decoration: underline;
}

/* Card action buttons container */
.card-actions {
  position: absolute;
  bottom: 1rem;
  left: 1rem;
  right: 1rem;
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  justify-content: flex-end;
  align-items: center;
}

/* Front card single indicator */
.flip-card-front .flip-indicator {
  position: absolute;
  bottom: 1rem;
  right: 1rem;
}

/* Mobile adjustments */
@media (max-width: 768px) {
  .flip-card,
  .flip-card-inner,
  .flip-card-front,
  .flip-card-back {
    min-height: 340px;
  }

  .flip-card-front,
  .flip-card-back {
    padding: 1.5rem;
    padding-bottom: 3.5rem;
  }

  .flip-card-front h3,
  .flip-card-back h3 {
    font-size: 1.3rem;
  }

  .flip-card-front h4,
  .flip-card-back h4 {
    font-size: 1rem;
  }

  .flip-card-front ul li,
  .flip-card-back ul li {
    padding: 0.4rem 0;
    padding-left: 1.5rem;
    font-size: 0.9rem;
  }

  .flip-card-front ul li:before,
  .flip-card-back ul li:before {
    margin-right: 0.25rem;
  }

  .flip-indicator {
    font-size: 0.75rem;
  }

  .card-actions {
    flex-direction: row;
    gap: 1rem;
    left: 1rem;
    right: 1rem;
    flex-wrap: wrap;
  }
}

@media (max-width: 480px) {
  .flip-card,
  .flip-card-inner,
  .flip-card-front,
  .flip-card-back {
    min-height: 360px;
  }

  .flip-card-front,
  .flip-card-back {
    padding: 1.25rem;
    padding-bottom: 3.75rem;
  }

  .flip-card-front ul li,
  .flip-card-back ul li {
    padding: 0.35rem 0;
    padding-left: 1.5rem;
    font-size: 0.85rem;
  }

  .flip-card-front ul li:before,
  .flip-card-back ul li:before {
    margin-right: 0.25rem;
  }

  .flip-indicator {
    font-size: 0.7rem;
  }

  .card-actions {
    bottom: 0.75rem;
    left: 0.75rem;
    right: 0.75rem;
    gap: 0.75rem;
    flex-wrap: wrap;
  }
}

/* Touch device support - tap to flip */
@media (hover: none) and (pointer: coarse) {
  .flip-card:hover .flip-card-inner {
    transform: none;
  }

  .flip-indicator {
    opacity: 1;
  }
}

/* Additional mobile responsiveness */
@media (max-width: 768px) {
  .flip-card {
    -webkit-tap-highlight-color: transparent;
  }

  .flip-card-front,
  .flip-card-back {
    -webkit-user-select: none;
    user-select: none;
  }
}