* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: "Montserrat", sans-serif;
  background: radial-gradient(circle at center, #f8f9ff, #e6f0ff);
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  padding: 20px;
}
.back-button {
  position: fixed;
  top: 10px;
  left: 50%;
  transform: translateX(-50%);
  padding: 10px 20px;
  text-decoration: none;
  color: #fff;
  background: linear-gradient(90deg, #00d2ff, #3a7bd5);
  border-radius: 8px;
  font-weight: 600;
  z-index: 1000;
  transition: background 0.3s, transform 0.2s;
}

.back-button:hover {
  background: linear-gradient(90deg, #3a7bd5, #00d2ff);
  transform: translateX(-50%) translateY(-2px);
}

.product-card {
  width: 280px;
  height: 400px;
  background: linear-gradient(145deg, #ffffff, #f8faff);
  border-radius: 24px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: all 0.5s cubic-bezier(0.25, 0.8, 0.25, 1);
  box-shadow: 0 10px 30px rgba(41, 98, 255, 0.15);
  position: relative;
  border: 1px solid rgba(255, 255, 255, 0.3);
  backdrop-filter: blur(5px);
}

.product-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 40px rgba(52, 112, 255, 0.25),
    0 0 30px rgba(52, 112, 255, 0.1), inset 0 0 15px rgba(255, 255, 255, 0.5);
  animation: float 4s ease-in-out infinite;
}

.product-image {
  width: 150px;
  height: 150px;
  object-fit: cover;
  border-radius: 16px;
  margin: 24px auto 16px;
  display: block;
  background: linear-gradient(45deg, #f3f4ff, #e0e7ff);
  padding: 8px;
  box-shadow: 0 5px 15px rgba(52, 112, 255, 0.1);
  transition: transform 0.4s ease, box-shadow 0.4s ease;
  border: 1px solid rgba(52, 112, 255, 0.1);
}

.product-card:hover .product-image {
  transform: scale(1.05) rotate(2deg);
  box-shadow: 0 8px 25px rgba(52, 112, 255, 0.2);
}

.product-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  padding: 0 20px;
}

.product-title {
  font-size: 18px;
  font-weight: 700;
  color: #1a1a1a;
  margin-bottom: 10px;
  line-height: 1.4;
  text-align: center;
  background: linear-gradient(90deg, #3470ff, #5b8cff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: -0.5px;
}

.product-title span {
  font-weight: 800;
  background: linear-gradient(90deg, #ff6b6b, #ff8e8e);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.product-description {
  font-size: 13px;
  color: #64748b;
  margin-bottom: 16px;
  line-height: 1.5;
  font-weight: 500;
  text-align: center;
  padding: 0 10px;
}

.price-container {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-bottom: 20px;
}

.old-price {
  font-size: 14px;
  color: #94a3b8;
  text-decoration: line-through;
  font-weight: 500;
  position: relative;
}

.old-price::after {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, #ff6b6b, transparent);
  transform: translateY(-50%);
}

.new-price {
  font-size: 20px;
  font-weight: 800;
  color: #3470ff;
  text-shadow: 0 2px 8px rgba(52, 112, 255, 0.2);
  position: relative;
}

.new-price::after {
  content: "🔥";
  position: absolute;
  right: -20px;
  top: -5px;
  font-size: 14px;
}

.action-container {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 0 16px 24px;
  margin-top: auto;
}

.add-to-cart {
  background: linear-gradient(135deg, #4f7cff 0%, #2962ff 100%);
  color: white;
  border: none;
  padding: 14px;
  border-radius: 14px;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
  width: 100%;
  text-align: center;
  box-shadow: 0 4px 15px rgba(52, 112, 255, 0.3);
  position: relative;
  overflow: hidden;
}

.add-to-cart::before {
  content: "";
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: linear-gradient(
    to bottom right,
    rgba(255, 255, 255, 0.3),
    rgba(255, 255, 255, 0)
  );
  transform: rotate(30deg);
  transition: all 0.5s ease;
}

.add-to-cart:hover {
  background: linear-gradient(135deg, #3a6bf5 0%, #1a56f0 100%);
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 8px 25px rgba(52, 112, 255, 0.4);
}

.add-to-cart:hover::before {
  left: 100%;
  top: 100%;
}

.add-to-cart:active {
  transform: translateY(0) scale(0.98);
}

.favorite-icon {
  position: absolute;
  top: 16px;
  right: 16px;
  background: rgba(255, 255, 255, 0.9);
  border: none;
  cursor: pointer;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
  transition: all 0.4s cubic-bezier(0.18, 0.89, 0.32, 1.28);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  z-index: 2;
}

.favorite-icon svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: #64748b;
  stroke-width: 2.5;
  transition: all 0.3s ease;
}

.favorite-icon:hover {
  transform: scale(1.15);
  background: rgba(255, 255, 255, 1);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.15);
}

.favorite-icon:hover svg {
  stroke: #ff4757;
}

.favorite-icon.active svg {
  fill: #ff4757;
  stroke: #ff4757;
  filter: drop-shadow(0 2px 6px rgba(255, 71, 87, 0.4));
}

@keyframes float {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-2px);
  }
}

.product-card::before {
  content: "";
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(
    circle at center,
    rgba(52, 112, 255, 0.05),
    transparent 70%
  );
  pointer-events: none;
}

@media (max-width: 320px) {
  .product-card {
    width: 100%;
  }
}