/* ===========================
   GLOBAL RESET & BASE
=========================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', sans-serif;
  background-color: #f2f4f5;
  color: #1c2428;
  line-height: 1.65;
  font-size: 15px;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

/* ===========================
   HEADER
   — Warm graphite to slate, teal accent stripe
=========================== */
.site-header {
  background: linear-gradient(135deg, #222e30 0%, #374b50 100%);
  padding: 22px 16px;
  box-shadow: 0 3px 14px rgba(34,46,48,0.30);
  position: relative;
}

.site-header::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, #2a9d8f 0%, #52b4a8 100%);
}

.header-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  text-align: center;
}

.site-logo {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: #7ecdc5;
}

.header-title {
  font-size: clamp(15px, 2.3vw, 21px);
  font-weight: 700;
  color: #ffffff;
  max-width: 820px;
  line-height: 1.35;
}

/* ===========================
   PRODUCT SECTION
=========================== */
.product-section {
  padding: 44px 16px;
}

.product-card {
  max-width: 1100px;
  margin: 0 auto;
  background: #ffffff;
  border-radius: 14px;
  box-shadow: 0 4px 28px rgba(34,46,48,0.10);
  display: grid;
  grid-template-columns: 1fr 1fr;
  overflow: hidden;
  border: 1px solid #d8e0e2;
}

/* ===========================
   GALLERY
=========================== */
.gallery-col {
  background: #ecf0f1;
  padding: 28px 22px;
  border-right: 1px solid #d8e0e2;
  position: relative;
}

.gallery-radio { display: none; }

.gallery-main {
  width: 100%;
  overflow: hidden;
  border-radius: 10px;
  background: #f8fafa;
  aspect-ratio: 1 / 1;
  border: 1px solid #ccd5d7;
}

.gallery-slides {
  width: 400%;
  height: 100%;
  display: flex;
}

.gallery-slide {
  width: 25%;
  flex-shrink: 0;
  display: none;
}

.gallery-slide img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center;
}

#img1:checked ~ .gallery-main .gallery-slides #slide1,
#img2:checked ~ .gallery-main .gallery-slides #slide2,
#img3:checked ~ .gallery-main .gallery-slides #slide3,
#img4:checked ~ .gallery-main .gallery-slides #slide4 {
  display: block;
}

.gallery-thumbs {
  display: flex;
  gap: 8px;
  margin-top: 14px;
  flex-wrap: wrap;
}

.thumb-label {
  width: calc(25% - 6px);
  border-radius: 6px;
  overflow: hidden;
  cursor: pointer;
  border: 2px solid transparent;
  transition: border-color 0.2s;
  background: #f8fafa;
}

.thumb-label img {
  width: 100%;
  aspect-ratio: 1/1;
  object-fit: cover;
}

#img1:checked ~ .gallery-thumbs label[for="img1"],
#img2:checked ~ .gallery-thumbs label[for="img2"],
#img3:checked ~ .gallery-thumbs label[for="img3"],
#img4:checked ~ .gallery-thumbs label[for="img4"] {
  border-color: #2a9d8f;
}

.thumb-label:hover { border-color: #3bbdb0; }

/* ===========================
   INFO COLUMN
=========================== */
.info-col {
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.product-title {
  font-size: clamp(14px, 1.6vw, 18px);
  font-weight: 700;
  color: #1c2428;
  line-height: 1.42;
}

/* ===========================
   DESCRIPTION
=========================== */
.desc-heading {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: #2a9d8f;
  padding-bottom: 5px;
  border-bottom: 2px solid #d8e0e2;
  margin-bottom: 14px;
}

.desc-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 13px;
}

.desc-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  color: #2c3e42;
  line-height: 1.62;
}

.desc-bullet {
  color: #2a9d8f;
  font-size: 11px;
  flex-shrink: 0;
  margin-top: 4px;
}

.desc-list strong { color: #1c2428; }

.keywords-block {
  margin-top: 6px;
  padding: 13px 16px;
  background: #eaf6f5;
  border-left: 3px solid #2a9d8f;
  border-radius: 4px;
  font-size: 14px;
  color: #2c3e42;
  line-height: 1.65;
}

.keywords-block strong { color: #1f7068; }

/* ===========================
   CTA BUTTON
   — Teal, clean rounded pill
=========================== */
.cta-section {
  padding: 36px 16px 52px;
  display: flex;
  justify-content: center;
}

.cta-btn {
  display: inline-block;
  background: linear-gradient(135deg, #1f7068 0%, #2a9d8f 100%);
  color: #ffffff;
  font-size: clamp(16px, 2vw, 20px);
  font-weight: 700;
  padding: 18px 58px;
  border-radius: 50px;
  text-decoration: none;
  box-shadow: 0 6px 24px rgba(42,157,143,0.32);
  letter-spacing: 0.04em;
  transition: transform 0.15s, box-shadow 0.15s;
}

.cta-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 34px rgba(42,157,143,0.42);
  background: linear-gradient(135deg, #185c55 0%, #238078 100%);
}

/* ===========================
   REVIEWS SECTION
=========================== */
.reviews-section {
  background: #f2f4f5;
  padding: 0 16px 64px;
}

.reviews-container {
  max-width: 820px;
  margin: 0 auto;
}

.reviews-heading {
  font-size: clamp(17px, 2.4vw, 22px);
  font-weight: 700;
  color: #1c2428;
  margin-bottom: 28px;
  padding-bottom: 10px;
  border-bottom: 2px solid #d8e0e2;
}

.review-item {
  background: #ffffff;
  border-radius: 10px;
  padding: 22px 24px;
  margin-bottom: 20px;
  box-shadow: 0 2px 12px rgba(34,46,48,0.07);
  border-right: 4px solid #2a9d8f;
}

.review-header {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 10px;
}

.review-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  overflow: hidden;
  flex-shrink: 0;
  background: #ccd5d7;
  border: 2px solid #b8c8ca;
}

.review-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.review-meta {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.reviewer-name {
  font-weight: 700;
  font-size: 14px;
  color: #1c2428;
}

.review-stars {
  color: #d4820a;
  font-size: 15px;
  letter-spacing: 1px;
}

.review-title {
  font-weight: 600;
  font-size: 14px;
  color: #2c3e42;
}

.review-date {
  font-size: 12px;
  color: #5a7274;
  margin-bottom: 3px;
}

.review-tags {
  font-size: 12px;
  color: #2a9d8f;
  font-weight: 600;
  margin-bottom: 10px;
}

.review-body {
  font-size: 14px;
  color: #2c3e42;
  line-height: 1.72;
  margin-bottom: 14px;
}

.review-photos {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.review-photos img {
  width: 80px;
  height: 80px;
  object-fit: cover;
  border-radius: 6px;
  border: 1px solid #d8e0e2;
}

/* ===========================
   FOOTER
=========================== */
.site-footer {
  background: linear-gradient(135deg, #131c1e 0%, #222e30 100%);
  padding: 28px 16px;
  text-align: center;
  border-top: 3px solid #2a9d8f;
}

.footer-inner {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.footer-logo {
  font-size: 12px;
  font-weight: 700;
  color: #7ecdc5;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 6px 14px;
  font-size: 13px;
}

.footer-links a {
  color: #4db8b0;
  text-decoration: none;
  transition: color 0.15s;
}

.footer-links a:hover { color: #ffffff; text-decoration: underline; }

.footer-sep { color: #2e4446; }

.footer-copy {
  font-size: 12px;
  color: #466265;
}

/* ===========================
   RESPONSIVE
=========================== */
@media (max-width: 768px) {
  .product-card { grid-template-columns: 1fr; }
  .gallery-col { border-right: none; border-bottom: 1px solid #d8e0e2; padding: 20px 16px; }
  .info-col { padding: 24px 16px; }
  .cta-btn { padding: 16px 36px; font-size: 16px; width: 90%; text-align: center; }
}

@media (max-width: 480px) {
  .site-header { padding: 16px 12px; }
  .product-section { padding: 20px 10px; }
  .thumb-label { width: calc(25% - 5px); }
  .review-item { padding: 16px 14px; }
  .review-avatar { width: 38px; height: 38px; }
  .review-photos img { width: 64px; height: 64px; }
}