:root {
  --primary-green: #0b3d2b;
  --light-green-bg: #f0fdf4;
  --star-color: #28a745;

  --gradient-green: linear-gradient(90deg, #032e15 0%, #016630 100%);

  --gradient-hover: linear-gradient(90deg, #016630 0%, #032e15 100%);

  --white: #ffffff;
  --grey-border: #eee;
  --text-grey: #555;

  --font-main: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    sans-serif;
  --transition: 0.3s ease;
}

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

html {
  scroll-behavior: smooth;
}

html,
body {
  width: 100%;
  margin: 0;
  padding: 0;
  overflow-x: hidden;
  font-family: var(--font-main);
  color: #333;
}

#root {
  width: 100%;
  display: block;
}

/*  3. global utilities & buttons */

.btn-primary {
  background: var(--gradient-green);
  color: var(--white);
  padding: 14px 32px;
  border-radius: 50px;
  font-size: 1rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
  text-align: center;
  box-shadow: 0 4px 15px rgba(3, 46, 21, 0.3);
  text-decoration: none;
  display: inline-block;
}

.btn-primary:hover {
  background: var(--gradient-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(3, 46, 21, 0.4);
}

.hero-content {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.hero-content button,
.hero-content .btn-primary {
  width: fit-content;
  min-width: 150px;
  align-self: flex-start;
}

.hidden {
  display: none !important;
}

/* 4. product section layout */
.product-container {
  max-width: 1200px;
  margin: 40px auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  padding: 0 20px;
}

/* --- left column: gallery --- */
.product-gallery {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.main-image-wrapper {
  position: relative;
  width: 100%;
  background: #f7f7f7;
  border-radius: 12px;
  overflow: hidden;
  height: 500px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
}

.main-image-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

/* gallery arrows */
.gallery-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid #ddd;
  border-radius: 50%;
  width: 44px;
  height: 44px;
  cursor: pointer;
  font-size: 20px;
  color: var(--primary-green);
  z-index: 2;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
}
.gallery-arrow:hover {
  background: var(--white);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}
.left-arrow {
  left: 20px;
}
.right-arrow {
  right: 20px;
}

/* gallery dots */
.gallery-dots {
  position: absolute;
  bottom: 25px;
  left: 0;
  right: 0;
  text-align: center;
  z-index: 2;
}
.dot {
  display: inline-block;
  width: 10px;
  height: 10px;
  border: 1px solid var(--primary-green);
  border-radius: 50%;
  margin: 0 6px;
  cursor: pointer;
  background: transparent;
  transition: all 0.2s;
}
.dot.active {
  background: var(--primary-green);
  transform: scale(1.1);
}

/* gallery thumbnails */
.thumbnails-row {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 20px;
  max-width: 400px;
  margin-left: auto;
  margin-right: auto;
}

.thumb-img {
  width: 80px;
  height: 80px;
  object-fit: cover;
  border-radius: 8px;
  cursor: pointer;
  opacity: 0.6;
  border: 2px solid transparent;
  transition: var(--transition);
  background: #f7f7f7;
}
.thumb-img:hover {
  opacity: 0.8;
}
.thumb-img.active {
  opacity: 1;
  border-color: var(--primary-green);
}

/* --- right column: product details --- */
.product-details {
  display: flex;
  flex-direction: column;
}

.product-title {
  margin-top: 0;
  color: var(--primary-green);
  font-size: 2rem;
  font-weight: 700;
}

.rating {
  color: var(--star-color);
  margin-bottom: 15px;
  font-size: 0.95rem;
  font-weight: 500;
}
.stars {
  letter-spacing: 2px;
}

.product-desc {
  color: var(--text-grey);
  line-height: 1.6;
  margin-bottom: 25px;
}

/* subscription form ui */
.subscription-banner {
  background: linear-gradient(90deg, #00c950 0%, #008236 50%, #032e15 100%);

  color: var(--white);
  padding: 10px;
  text-align: center;
  font-weight: bold;
  font-size: 0.9rem;
  border-radius: 6px 6px 0 0;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

.sub-option-wrapper {
  border: 1px solid var(--grey-border);
  border-top: none;
  margin-bottom: 15px;
  border-radius: 0 0 6px 6px;
}

.sub-option-wrapper:nth-of-type(2) {
  border-top: 1px solid var(--grey-border);
  border-radius: 6px;
}

.sub-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15px 20px;
  cursor: pointer;
}

.radio-label-main {
  display: flex;
  align-items: center;
  cursor: pointer;
  font-weight: 600;
  color: #444;
  font-size: 1.05rem;
}

.radio-label-main input {
  display: none;
}

/* custom radio circle */
.radio-custom {
  width: 20px;
  height: 20px;
  border: 2px solid #ccc;
  border-radius: 50%;
  margin-right: 12px;
  position: relative;
  transition: var(--transition);
}

/* checked state for main radio */
.radio-label-main input:checked + .radio-custom {
  border-color: var(--primary-green);
}
.radio-label-main input:checked + .radio-custom::after {
  content: "";
  position: absolute;
  top: 3px;
  left: 3px;
  width: 10px;
  height: 10px;
  background: var(--primary-green);
  border-radius: 50%;
}

.price-display {
  font-weight: 700;
  font-size: 1.1rem;
}
.old-price {
  text-decoration: line-through;
  color: #aaa;
  margin-left: 8px;
  font-weight: 400;
  font-size: 0.9rem;
}

/* expandable content area */
.sub-content {
  padding: 0 20px 20px 20px;
  border-top: 1px solid #f5f5f5;
  animation: slideDown 0.3s ease-in-out;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-5px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.section-label {
  font-size: 0.85rem;
  color: #888;
  margin: 15px 0 10px;
  text-transform: uppercase;
  font-weight: 600;
}

/* grid for fragrances and frequencies */
.fragrance-grid,
.frequency-grid {
  display: flex;
  gap: 15px;
  flex-wrap: wrap;
}

.frag-option input,
.freq-option input {
  display: none;
}

.frag-card,
.freq-card {
  border: 1px solid var(--grey-border);
  border-radius: 8px;
  padding: 10px;
  background: #fff;
  cursor: pointer;
  position: relative;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.frag-card {
  width: 100px;
  height: 110px;
}

/* active selection style small cards */
.frag-option input:checked + .frag-card,
.freq-option input:checked + .freq-card {
  border-color: var(--primary-green);
  border-width: 2px;
  box-shadow: 2px 4px 12px rgba(11, 61, 43, 0.15);
}

.freq-img {
  height: 50px;
  width: auto;
  object-fit: contain;
  display: block;
}
.frag-img-sm {
  height: 45px;
  margin-bottom: 8px;
  object-fit: contain;
}

.tag {
  position: absolute;
  top: -8px;
  background: var(--primary-green);
  color: white;
  font-size: 9px;
  padding: 3px 6px;
  border-radius: 4px;
  text-transform: uppercase;
  font-weight: bold;
}

.mini-group {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
  justify-content: center;
  align-items: flex-end;
}

.mini-group img {
  height: 60px;
  width: auto;
  object-fit: contain;
}

/* perks list */
.perks-list {
  list-style: none;
  margin: 25px 0;
  font-size: 0.9rem;
  color: var(--text-grey);
}
.perks-list li {
  color: #032e15;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
}
.perks-list li::before {
  content: "";
  color: var(--primary-green);
  font-weight: bold;
  margin-right: 10px;
}
.perks-list strong {
  color: #333;
}

.sealCheck {
  width: 16px;
  height: 16px;
  margin-right: 10px;
}
/* dynamic add to cart button */
.add-to-cart-btn {
  display: block;
  width: 100%;
  background: linear-gradient(180deg, #032e15 0%, #016630 100%);
  color: var(--white);
  text-align: center;
  padding: 18px;
  border-radius: 50px;
  text-decoration: none;
  font-weight: 600;
  font-size: 1.1rem;
  transition: var(--transition);
  box-shadow: 0 4px 10px rgba(3, 46, 21, 0.2);
  margin-top: 20px;
}

.add-to-cart-btn:hover {
  background: var(--gradient-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 15px rgba(3, 46, 21, 0.3);
}

/*  5. responsive adjustments  */
@media (max-width: 900px) {
  .product-container {
    grid-template-columns: 1fr;
    gap: 30px;
    margin-top: 20px;
  }

  .main-image-wrapper {
    height: 400px;
  }
}

@media (max-width: 768px) {
  .hero-content .btn-primary {
    padding: 8px 20px;
    font-size: 0.85rem;
  }

  .product-container {
    padding: 0 15px; /* standard mobile side padding */
    gap: 20px; /* reduce vertical gap between gallery and text */
    margin-top: 20px;
    grid-template-columns: 1fr;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
  }

  /* 2. adjust main image height & width */
  .main-image-wrapper {
    height: 350px;
    width: 100%;
    margin-bottom: 15px;
  }

  /* 3. fix thumbnails layout align left to match text */
  .thumbnails-row {
    justify-content: flex-start;
    gap: 10px;
    margin-left: 0;
    margin-right: 0;
    max-width: 100%;
  }

  .thumb-img {
    width: 70px;
    height: 70px;
    flex-shrink: 0;
  }

  /* 4. tighter product text */
  .product-details {
    padding: 0;
  }

  .product-title {
    font-size: 1.8rem;
    margin-bottom: 5px;
    margin-top: 0;
  }

  .rating {
    margin-bottom: 15px;
  }

  /* 5. fix form spacing */
  .sub-option-wrapper {
    margin-bottom: 15px;
  }

  /* ensure the "most popular" banner hits the edges of the form */
  .subscription-banner {
    width: 100%;
    box-sizing: border-box;
  }
}

@media (max-width: 480px) {
  .main-image-wrapper {
    height: 300px;
  }
  .thumb-img {
    width: 60px;
    height: 60px;
  }
  .freq-card {
    width: 100%;
    justify-content: center;
  }
}