:root {
  --ivory: #FBF7EF;
  --ivory-deep: #F2ECDD;
  --teal: #134A42;
  --teal-deep: #0C332D;
  --teal-soft: #E4EEEA;
  --amber: #E3993A;
  --amber-deep: #C97E22;
  --bkash: #E2136E;
  --ink: #241F19;
  --ink-soft: #5B564C;
  --line: rgba(19, 74, 66, 0.14);
  --radius: 18px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--ivory);
  color: var(--ink);
  font-family: 'Hind Siliguri', 'Noto Sans Bengali', sans-serif;
  line-height: 1.6;
}

h1,
h2,
h3,
.display {
  font-family: 'Baloo Da 2', 'Hind Siliguri', sans-serif;
  color: var(--teal-deep);
  line-height: 1.25;
  margin: 0;
}

a {
  color: inherit;
  text-decoration: none;
}

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

.wrap {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
}

.eyebrow {
  font-size: 13px;
  letter-spacing: .06em;
  font-weight: 600;
  color: var(--amber-deep);
  text-transform: uppercase;
}

/* ---------- Header ---------- */
.topbar {
  background: var(--teal-deep);
  color: #EFE8D8;
  font-size: 13px;
  text-align: center;
  padding: 8px 16px;
}

header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(251, 247, 239, 0.92);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--line);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 10px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: 'Baloo Da 2', sans-serif;
  font-weight: 800;
  font-size: 22px;
  color: var(--teal-deep);
}

.logo-mark {
  width: 38px;
  height: 38px;
  border-radius: 11px;
  background: linear-gradient(160deg, var(--teal), var(--teal-deep));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--amber);
  font-size: 20px;
  font-weight: 800;
}

.logo small {
  display: block;
  font-family: 'Hind Siliguri', sans-serif;
  font-weight: 500;
  font-size: 11.5px;
  color: var(--ink-soft);
}

nav.links {
  display: flex;
  gap: 26px;
  font-weight: 600;
  font-size: 15px;
}

nav.links a {
  padding: 6px 2px;
  border-bottom: 2px solid transparent;
}

nav.links a:hover {
  border-color: var(--amber);
}

.wa-pill {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--teal);
  color: #fff;
  padding: 9px 16px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 14px;
  white-space: nowrap;
}

.wa-pill:hover {
  background: var(--teal-deep);
}

@media (max-width:820px) {
  nav.links {
    display: none;
  }
}

/* ---------- Hero ---------- */
.hero {
  padding: 64px 0 40px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  right: -120px;
  top: -140px;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, var(--teal-soft), transparent 70%);
  z-index: 0;
}

.hero-inner {
  position: relative;
  z-index: 1;
  max-width: 680px;
}

.hero h1 {
  font-size: clamp(32px, 5vw, 50px);
  font-weight: 700;
}

.hero h1 em {
  font-style: normal;
  color: var(--amber-deep);
}

.hero p {
  margin-top: 16px;
  font-size: 17px;
  color: var(--ink-soft);
  max-width: 560px;
}

.hero-ctas {
  display: flex;
  gap: 14px;
  margin-top: 28px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 26px;
  border-radius: 12px;
  font-weight: 700;
  font-size: 15.5px;
  border: none;
  cursor: pointer;
}

.btn-primary {
  background: var(--amber);
  color: var(--teal-deep);
}

.btn-primary:hover {
  background: var(--amber-deep);
  color: #fff;
}

.btn-outline {
  background: transparent;
  border: 1.5px solid var(--teal);
  color: var(--teal-deep);
}

.btn-outline:hover {
  background: var(--teal);
  color: #fff;
}

/* ---------- Trust bar ---------- */
.trust {
  background: var(--teal-deep);
  color: #EFE8D8;
}

.trust-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 28px;
  justify-content: center;
  padding: 22px 0;
  font-size: 14.5px;
  font-weight: 600;
}

.trust-item {
  margin: auto;
  display: flex;
  align-items: center;
  gap: 10px;
}

.trust-item .ic {
  width: 30px;
  height: 30px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
}

/* ---------- Product picker ---------- */
.picker {
  padding: 56px 0 8px;
}

.picker h2 {
  font-size: 28px;
  text-align: center;
}

.picker .sub {
  text-align: center;
  color: var(--ink-soft);
  margin-top: 10px;
}

.picker-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 34px;
}

.pick-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px;
  text-align: center;
  transition: transform .15s ease, box-shadow .15s ease;
}

.pick-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 14px 30px rgba(19, 74, 66, 0.12);
}

.pick-card .thumb {
  height: 220px;
  border-radius: 12px;
  background: var(--teal-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  margin-bottom: 16px;
}

.pick-card .thumb img {
  height: 100%;
  width: 100%;
  object-fit: cover;
}

.pick-card h3 {
  font-size: 17px;
}

.pick-card .price {
  color: var(--amber-deep);
  font-weight: 700;
  margin-top: 6px;
}

@media (max-width:820px) {
  .picker-grid {
    grid-template-columns: 1fr;
  }
}

/* ---------- Product sections ---------- */
.product {
  padding: 76px 0;
  border-top: 1px solid var(--line);
}

.product.alt {
  background: var(--ivory-deep);
}

.product-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 52px;
  align-items: start;
}

@media (max-width:900px) {
  .product-grid {
    grid-template-columns: 1fr;
  }
}

.gallery {
  position: sticky;
  top: 96px;
}

.gallery-main {
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--teal-soft);
  aspect-ratio: 1/1;
  display: flex;
  align-items: center;
  justify-content: center;
}

.gallery-main img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.gallery-thumbs {
  display: flex;
  gap: 10px;
  margin-top: 12px;
}

.gallery-thumbs img {
  width: 64px;
  height: 64px;
  object-fit: cover;
  border-radius: 10px;
  cursor: pointer;
  border: 2px solid transparent;
}

.gallery-thumbs img.active {
  border-color: var(--amber);
}

.badge-row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin: 14px 0 18px;
}

.badge {
  font-size: 12.5px;
  font-weight: 700;
  background: var(--teal-soft);
  color: var(--teal-deep);
  padding: 6px 12px;
  border-radius: 999px;
}

.product h2 {
  font-size: clamp(24px, 3.4vw, 32px);
  margin-top: 8px;
}

.product .desc {
  color: var(--ink-soft);
  margin-top: 14px;
  font-size: 15.5px;
}

.feature-list {
  list-style: none;
  padding: 0;
  margin: 22px 0;
  display: grid;
  gap: 10px;
}

.feature-list li {
  display: flex;
  gap: 10px;
  font-size: 15px;
  color: var(--ink);
}

.feature-list li::before {
  content: "✓";
  color: #fff;
  background: var(--teal);
  font-size: 12px;
  font-weight: 800;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex: none;
  margin-top: 2px;
}

.price-box {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 20px 22px;
  margin-top: 24px;
}

.price-row {
  display: flex;
  align-items: baseline;
  gap: 12px;
  flex-wrap: wrap;
}

.price-now {
  font-size: 30px;
  font-weight: 800;
  color: var(--teal-deep);
  font-family: 'Baloo Da 2', sans-serif;
}

.price-old {
  font-size: 17px;
  color: #A79E8F;
  text-decoration: line-through;
}

.price-note {
  font-size: 13px;
  color: var(--ink-soft);
  margin-top: 6px;
}

.bkash-note {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 12px;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--bkash);
}

/* order form */
.order-form {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 24px;
  margin-top: 20px;
}

.order-form h4 {
  font-family: 'Hind Siliguri', sans-serif;
  font-weight: 700;
  font-size: 15px;
  color: var(--teal-deep);
  margin-bottom: 14px;
}

.pay-toggle {
  display: flex;
  gap: 10px;
  margin-bottom: 16px;
}

.pay-opt {
  flex: 1;
  border: 1.5px solid var(--line);
  border-radius: 12px;
  padding: 12px 14px;
  cursor: pointer;
  font-weight: 600;
  font-size: 14px;
  text-align: center;
}

.pay-opt.active {
  border-color: var(--teal);
  background: var(--teal-soft);
  color: var(--teal-deep);
}

.pay-opt .sub {
  display: block;
  font-weight: 500;
  font-size: 12px;
  color: var(--ink-soft);
  margin-top: 3px;
}

.field {
  margin-bottom: 12px;
}

.field label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--ink-soft);
  margin-bottom: 5px;
}

.field input,
.field textarea,
.field select {
  width: 100%;
  padding: 11px 13px;
  border: 1.5px solid var(--line);
  border-radius: 10px;
  font-family: inherit;
  font-size: 14.5px;
  background: var(--ivory);
}

.field input:focus,
.field textarea:focus,
.field select:focus {
  outline: 2px solid var(--amber);
  border-color: transparent;
}

.qty-row {
  display: flex;
  align-items: center;
  gap: 12px;
}

.qty-row button {
  width: 34px;
  height: 34px;
  border-radius: 8px;
  border: 1.5px solid var(--line);
  background: #fff;
  font-size: 17px;
  cursor: pointer;
}

.qty-row span {
  font-weight: 700;
  min-width: 20px;
  text-align: center;
}

.bkash-panel {
  display: none;
  background: var(--teal-soft);
  border-radius: 12px;
  padding: 14px 16px;
  margin-bottom: 14px;
  font-size: 13.5px;
}

.bkash-panel.show {
  display: block;
}

.bkash-num {
  font-size: 19px;
  font-weight: 800;
  color: var(--bkash);
  font-family: 'Baloo Da 2', sans-serif;
  letter-spacing: .02em;
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 6px;
}

.bkash-logo {
  height: 20px;
  width: auto;
  display: inline-block;
}

.bkash-logo-sm {
  height: 15px;
  width: auto;
  display: block;
}

.trust-item .ic.ic-bkash {
  background: #fff;
}

.copy-btn {
  font-size: 11.5px;
  font-weight: 700;
  background: #fff;
  border: 1px solid var(--bkash);
  color: var(--bkash);
  padding: 5px 10px;
  border-radius: 8px;
  cursor: pointer;
}

.submit-btn {
  width: 100%;
  background: var(--teal);
  color: #fff;
  border: none;
  padding: 15px;
  border-radius: 12px;
  font-weight: 700;
  font-size: 15.5px;
  cursor: pointer;
  margin-top: 6px;
}

.submit-btn:hover {
  background: var(--teal-deep);
}

.form-note {
  font-size: 12px;
  color: var(--ink-soft);
  margin-top: 10px;
  text-align: center;
}

.warning-box {
  display: none;
  background: #FCE9E9;
  color: #B3261E;
  border: 1px solid #F3C6C4;
  border-radius: 10px;
  padding: 10px 14px;
  font-size: 13.5px;
  font-weight: 600;
  margin-bottom: 14px;
}

.warning-box.active {
  display: block;
}

.success-box {
  display: none;
  text-align: center;
  padding: 30px 10px 10px;
}

.success-box.active {
  display: block;
}

.order-form.submitted .form-fields {
  display: none;
}

.order-form.submitted .success-box {
  display: block;
}

.success-box .success-icon {
  font-size: 44px;
}

.success-box h4 {
  font-size: 19px;
  margin-top: 8px;
}

.success-box p {
  color: var(--ink-soft);
  font-size: 14.5px;
  margin-top: 8px;
}

.success-box .order-id {
  color: var(--teal-deep);
  font-family: 'Baloo Da 2', sans-serif;
}

.success-box .reset-form {
  margin-top: 16px;
}

.total-price-box {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--teal-soft);
  border-radius: 12px;
  padding: 13px 16px;
  margin: 16px 0 10px;
  font-size: 14px;
  font-weight: 600;
  color: var(--ink-soft);
}

.total-price-box .total-price-val {
  font-family: 'Baloo Da 2', sans-serif;
  font-size: 21px;
  color: var(--teal-deep);
  font-weight: 800;
}

.submit-btn:disabled {
  opacity: .7;
  cursor: not-allowed;
}

.spin {
  display: inline-block;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* diagram illustration for drain seal */
.diagram-wrap {
  background: var(--teal-soft);
  border-radius: var(--radius);
  position: sticky;
  top: 96px;
}

.diagram-caption {
  font-size: 13px;
  color: var(--ink-soft);
  text-align: center;
  margin-top: 10px;
}

/* ---------- FAQ ---------- */
#faq {
  padding: 10px 0;
}
.faq {
  padding: 70px 0;
}

.faq h2 {
  text-align: center;
  font-size: 28px;
  margin-bottom: 36px;
}

.faq-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

@media (max-width:800px) {
  .faq-grid {
    grid-template-columns: 1fr;
  }
}

details {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 16px 18px;
  margin-bottom: 12px;
}

summary {
  font-weight: 700;
  cursor: pointer;
  font-size: 15px;
  color: var(--teal-deep);
}

details p {
  margin: 10px 0 0;
  color: var(--ink-soft);
  font-size: 14.5px;
}

/* Live payment calculator rows */
.pay-option-row{
  display:flex;
  flex-direction:column;
  gap:10px;
  margin:10px 0;
}
.pay-option-row label{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:14px;
  line-height:1.4;
  cursor:pointer;
  padding:12px 14px;
  border:1.5px solid var(--line);
  border-radius:10px;
  transition:border-color .15s ease, background .15s ease;
}
.pay-option-row label:has(input:checked){
  border-color: var(--teal);
  background: var(--teal-soft);
}
.pay-option-row input[type="radio"]{
  flex-shrink:0;
  width:18px;
  height:18px;
  margin:0;
  accent-color: var(--teal);
}
.pay-option-row label span{
  flex:1;
}
.pay-now-row, .remaining-row{
  display:flex;
  justify-content:space-between;
  align-items:center;
  padding:8px 0;
  border-top:1px dashed var(--line);
  margin-top:6px;
  font-size:15px;
}
.pay-now-row strong, .remaining-row strong{
  color: var(--teal-deep);
}

/* ---------- Footer ---------- */
footer {
  background: var(--teal-deep);
  color: #D8D2C2;
  padding: 44px 0 26px;
}

.footer-grid {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 24px;
}

footer h3 {
  color: #fff;
  font-family: 'Baloo Da 2', sans-serif;
  font-size: 20px;
}

footer .cols {
  display: flex;
  gap: 56px;
  flex-wrap: wrap;
}

footer a.flink {
  display: block;
  margin-top: 8px;
  font-size: 14px;
  color: #D8D2C2;
}

footer a.flink:hover {
  color: #fff;
}

.foot-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  margin-top: 30px;
  padding-top: 20px;
  font-size: 12.5px;
  color: #9C9686;
  text-align: center;
}

.toast {
  position: fixed;
  bottom: 22px;
  left: 50%;
  transform: translateX(-50%) translateY(120%);
  background: var(--teal-deep);
  color: #fff;
  padding: 14px 22px;
  border-radius: 12px;
  font-weight: 600;
  font-size: 14px;
  transition: transform .3s ease;
  z-index: 100;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.toast.show {
  transform: translateX(-50%) translateY(0);
}

@media(max-width: 900px) {

  .diagram-wrap,
  .gallery {
    position: unset;
  }
}