:root {
  --bg: #f3f8f5;
  --surface: #ffffff;
  --text: #17231d;
  --muted: #53655b;
  --brand: #2ecc71;
  --brand-strong: #1ca95c;
  --stroke: #d3e5db;
  --shadow: 0 16px 38px rgba(18, 65, 40, 0.1);
  --radius: 1rem;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: "Poppins", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 11% 9%, rgba(46, 204, 113, 0.22) 0, rgba(46, 204, 113, 0) 37%),
    radial-gradient(circle at 94% 84%, rgba(33, 178, 98, 0.16) 0, rgba(33, 178, 98, 0) 45%),
    var(--bg);
  line-height: 1.6;
}

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

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

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.container {
  width: min(100% - 2rem, 72rem);
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(12px);
  background: rgba(247, 252, 249, 0.9);
  border-bottom: 1px solid #c8e3d5;
}

.nav-wrap {
  min-height: 4.25rem;
  display: flex;
  align-items: center;
  gap: 0.8rem;
  flex-wrap: wrap;
  padding-block: 0.7rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  margin-right: auto;
}

.brand-mark {
  width: 2.05rem;
  aspect-ratio: 1;
  border-radius: 0.75rem;
  display: grid;
  place-items: center;
  background: linear-gradient(145deg, #2ecc71, #1fa95d);
  color: #ffffff;
  font-size: 0.85rem;
  font-weight: 700;
}

.brand-text {
  font-size: 1rem;
  font-weight: 700;
}

.main-nav {
  width: 100%;
  order: 3;
}

.main-nav ul {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
}

.main-nav li {
  position: relative;
}

.main-nav a {
  display: block;
  padding: 0.5rem 0.74rem;
  border-radius: 0.7rem;
  font-weight: 500;
  font-size: 0.92rem;
}

.dropdown-toggle {
  display: block;
  padding: 0.5rem 0.74rem;
  border-radius: 0.7rem;
  font-weight: 500;
  font-size: 0.92rem;
  border: 0;
  background: transparent;
  color: inherit;
  font-family: inherit;
  cursor: pointer;
}

.main-nav a:hover,
.main-nav a:focus-visible,
.dropdown-toggle:hover,
.dropdown-toggle:focus-visible {
  background: #e8f8ef;
  color: #116c39;
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 11rem;
  margin-top: 0.35rem;
  padding: 0.4rem;
  background: #ffffff;
  border: 1px solid var(--stroke);
  border-radius: 0.7rem;
  box-shadow: var(--shadow);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: opacity 0.2s ease, visibility 0.2s ease, transform 0.2s ease;
}

.dropdown:hover .dropdown-menu,
.dropdown:focus-within .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown.open .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown.open .dropdown-toggle {
  background: #e8f8ef;
  color: #116c39;
}

.dropdown-menu a {
  font-size: 0.85rem;
}

.lang-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.35rem 0.55rem;
  border-radius: 999px;
  border: 1px solid var(--stroke);
  background: #ffffff;
  cursor: pointer;
  user-select: none;
}

.lang-label {
  font-size: 0.8rem;
  font-weight: 600;
}

.toggle-pill {
  width: 1.85rem;
  height: 1.05rem;
  border-radius: 999px;
  background: #d6f5e2;
  position: relative;
}

.toggle-pill::after {
  content: "";
  position: absolute;
  top: 0.13rem;
  left: 0.13rem;
  width: 0.78rem;
  height: 0.78rem;
  border-radius: 50%;
  background: var(--brand-strong);
  transition: transform 0.25s ease;
}

#lang-switch:checked ~ .site-shell .toggle-pill::after {
  transform: translateX(0.78rem);
}

.hero {
  padding: 3.2rem 0 2.4rem;
}

.hero-grid {
  display: grid;
  gap: 1.2rem;
}

.hero-copy,
.hero-stats {
  background: var(--surface);
  border: 1px solid #cfe3d8;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.2rem;
}

.eyebrow {
  margin: 0;
  color: #178446;
  font-weight: 600;
  letter-spacing: 0.02em;
}

h1 {
  margin: 0.4rem 0 0.9rem;
  line-height: 1.25;
  font-size: clamp(1.65rem, 4.5vw, 2.5rem);
}

.subtitle {
  margin: 0;
  color: var(--muted);
}

.search-form {
  margin-top: 1rem;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.55rem;
}

.search-form input,
.search-form button {
  width: 100%;
  border: 1px solid var(--stroke);
  border-radius: 0.62rem;
  padding: 0.75rem 0.9rem;
  font: inherit;
}

.search-form input {
  background: #ffffff;
}

.search-form button {
  background: var(--brand);
  border-color: var(--brand);
  color: #ffffff;
  font-weight: 600;
  cursor: pointer;
}

.search-form button:hover,
.search-form button:focus-visible {
  background: var(--brand-strong);
}

.hero-stats article {
  padding: 0.7rem;
  border: 1px dashed #bde8cc;
  border-radius: 0.85rem;
  background: #f7fef9;
}

.hero-stats article + article {
  margin-top: 0.65rem;
}

.hero-stats h2 {
  margin: 0;
  font-size: 1.3rem;
  color: #1a8f4d;
}

.hero-stats p {
  margin: 0.2rem 0 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.features {
  padding: 2.8rem 0;
  background: #f9fcfb;
}

.features-grid {
  display: grid;
  gap: 1.2rem;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.feature-card {
  background: #ffffff;
  border: 1px solid var(--stroke);
  border-radius: var(--radius);
  box-shadow: 0 4px 12px rgba(18, 65, 40, 0.08);
  padding: 1.5rem;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(18, 65, 40, 0.15);
}

.feature-card h3 {
  color: #1ca95c;
  font-size: 1.1rem;
  margin-bottom: 0.8rem;
}

.feature-card p {
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.6;
  margin: 0;
}

.topics {
  padding: 2.8rem 0;
}

.topics-grid {
  display: grid;
  gap: 1.2rem;
  grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
}

.topic-item {
  background: #ffffff;
  border-left: 4px solid #2ecc71;
  border-radius: 0.6rem;
  box-shadow: 0 2px 8px rgba(18, 65, 40, 0.08);
  padding: 1.4rem;
  transition: box-shadow 0.3s ease;
}

.topic-item:hover {
  box-shadow: 0 6px 16px rgba(18, 65, 40, 0.12);
}

.topic-item h3 {
  color: var(--text);
  font-size: 1rem;
  margin-bottom: 0.7rem;
}

.topic-item p {
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.6;
  margin: 0;
}

.featured {
  padding: 0.5rem 0 2.8rem;
}

.bmi-section {
  padding: 0 0 2.8rem;
}

.bmi-grid {
  display: grid;
  gap: 0.9rem;
}

.bmi-card,
.bmi-result-card {
  background: #ffffff;
  border: 1px solid var(--stroke);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1rem;
}

.bmi-form {
  display: grid;
  gap: 0.55rem;
}

.bmi-form label {
  font-size: 0.9rem;
  font-weight: 600;
}

.bmi-form input,
.bmi-form select,
.bmi-btn {
  width: 100%;
  border: 1px solid var(--stroke);
  border-radius: 0.65rem;
  padding: 0.72rem 0.85rem;
  font: inherit;
}

.height-ft-group {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.55rem;
}

.height-ft-group > div {
  display: grid;
  gap: 0.55rem;
}

.bmi-btn {
  margin-top: 0.3rem;
  background: var(--brand);
  border-color: var(--brand);
  color: #ffffff;
  font-weight: 600;
  cursor: pointer;
}

.bmi-btn:hover,
.bmi-btn:focus-visible {
  background: var(--brand-strong);
}

.bmi-value {
  margin: 0.2rem 0 0.1rem;
  font-size: clamp(2rem, 6vw, 2.8rem);
  font-weight: 700;
  line-height: 1;
}

.bmi-status {
  margin: 0;
  font-weight: 600;
}

.bmi-suggestion {
  margin: 0.7rem 0 0;
  color: var(--muted);
}

.bmi-progress {
  margin-top: 0.7rem;
  width: 100%;
  height: 0.75rem;
  border-radius: 999px;
  background: #eaf8f0;
  overflow: hidden;
  border: 1px solid #cfead8;
}

.bmi-progress span {
  display: block;
  height: 100%;
  width: 0;
  background: #9ca3af;
  transition: width 0.35s ease, background-color 0.35s ease;
}

.bmi-legend {
  margin: 0.7rem 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.38rem;
}

.bmi-legend li {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.45rem;
  border-radius: 0.55rem;
  color: var(--muted);
  font-size: 0.86rem;
  border: 1px solid transparent;
  transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

.legend-dot {
  width: 0.58rem;
  height: 0.58rem;
  border-radius: 50%;
  background: #cbd5e1;
  flex-shrink: 0;
}

.bmi-legend li[data-category="underweight"] .legend-dot {
  background: #2563eb;
}

.bmi-legend li[data-category="normal"] .legend-dot {
  background: #16a34a;
}

.bmi-legend li[data-category="overweight"] .legend-dot {
  background: #ea580c;
}

.bmi-legend li[data-category="obese"] .legend-dot {
  background: #dc2626;
}

.bmi-legend li.active {
  background: #f3faf6;
  border-color: #d2ecdc;
  color: #153a27;
  font-weight: 600;
}

.bmi-result-card.status-underweight .bmi-value,
.bmi-result-card.status-underweight .bmi-status {
  color: #1d4ed8;
}

.bmi-result-card.status-normal .bmi-value,
.bmi-result-card.status-normal .bmi-status {
  color: #15803d;
}

.bmi-result-card.status-overweight .bmi-value,
.bmi-result-card.status-overweight .bmi-status {
  color: #c2410c;
}

.bmi-result-card.status-obese .bmi-value,
.bmi-result-card.status-obese .bmi-status {
  color: #b91c1c;
}

.energy-section {
  padding: 0 0 2.8rem;
}

.energy-grid {
  display: grid;
  gap: 0.9rem;
}

.energy-card,
.energy-result {
  background: #ffffff;
  border: 1px solid var(--stroke);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1rem;
}

.energy-form {
  display: grid;
  gap: 0.55rem;
}

.energy-form label {
  font-size: 0.9rem;
  font-weight: 600;
}

.energy-form input,
.energy-form select,
.energy-btn {
  width: 100%;
  border: 1px solid var(--stroke);
  border-radius: 0.65rem;
  padding: 0.72rem 0.85rem;
  font: inherit;
}

.energy-btn {
  margin-top: 0.3rem;
  background: #20bf67;
  border-color: #20bf67;
  color: #ffffff;
  font-weight: 600;
  cursor: pointer;
}

.energy-btn:hover,
.energy-btn:focus-visible {
  background: #18a45a;
}

.energy-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin: 0.35rem 0;
  padding: 0.65rem 0.7rem;
  border-radius: 0.65rem;
  background: #f5fcf8;
  border: 1px solid #dcefe4;
}

.energy-row .label {
  font-weight: 600;
}

.energy-row .value {
  font-size: 1.2rem;
  font-weight: 700;
  color: #187a44;
}

.energy-note {
  margin: 0.7rem 0 0;
  color: var(--muted);
}

.calorie-cards {
  margin-top: 0.8rem;
  display: grid;
  gap: 0.6rem;
}

.calorie-cards article {
  border: 1px solid #dcefe4;
  border-radius: 0.75rem;
  background: linear-gradient(180deg, #ffffff 0%, #f4fcf7 100%);
  padding: 0.7rem;
}

.calorie-cards h4 {
  margin: 0;
  font-size: 0.95rem;
}

.calorie-cards p {
  margin: 0.25rem 0 0;
  font-size: 1.1rem;
  font-weight: 700;
  color: #145f38;
}

.landing-content {
  padding: 0.3rem 0 2.8rem;
}

.landing-content h2 {
  margin: 0 0 0.6rem;
  font-size: clamp(1.25rem, 3.2vw, 1.85rem);
}

.landing-content h3 {
  margin: 1rem 0 0.45rem;
  font-size: 1.05rem;
}

.landing-content p {
  margin: 0;
  color: var(--muted);
}

.intro-copy {
  background: #ffffff;
  border: 1px solid var(--stroke);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1rem;
}

.key-points-grid {
  display: grid;
  gap: 0.8rem;
  margin-bottom: 1rem;
}

.key-point-card {
  background: linear-gradient(180deg, #ffffff 0%, #f5fcf8 100%);
  border: 1px solid #d7ecdf;
  border-radius: 0.9rem;
  padding: 0.95rem;
}

.k-badge {
  width: fit-content;
  margin: 0 0 0.4rem;
  border-radius: 999px;
  border: 1px solid #b8e8cb;
  background: #e9f9f0;
  color: #14723d;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  padding: 0.2rem 0.55rem;
}

.key-point-card h3 {
  margin: 0.2rem 0 0.35rem;
  font-size: 1rem;
}

.key-point-card p {
  margin: 0;
}

.table-wrap {
  margin-top: 0.8rem;
  overflow-x: auto;
  border: 1px solid var(--stroke);
  border-radius: var(--radius);
  background: #ffffff;
}

.meal-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 44rem;
}

.meal-table th,
.meal-table td {
  padding: 0.7rem;
  border-bottom: 1px solid #e7f4ec;
  text-align: left;
  vertical-align: top;
  font-size: 0.92rem;
}

.meal-table th {
  background: #ecfaf2;
  color: #146f3b;
  font-weight: 600;
}

.faq-list {
  display: grid;
  gap: 0.75rem;
  margin-top: 0.9rem;
}

.faq-list article {
  background: #ffffff;
  border: 1px solid var(--stroke);
  border-radius: 0.85rem;
  padding: 0.9rem;
}

.faq-list h3 {
  margin-top: 0;
}

.faq-accordion {
  display: grid;
  gap: 0.65rem;
  margin-top: 0.9rem;
}

.faq-item {
  background: #ffffff;
  border: 1px solid var(--stroke);
  border-radius: 0.8rem;
  overflow: hidden;
}

.faq-item summary {
  list-style: none;
  cursor: pointer;
  font-weight: 600;
  padding: 0.85rem 0.95rem;
  position: relative;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: "+";
  position: absolute;
  right: 0.95rem;
  top: 0.8rem;
  color: #177941;
  font-size: 1.2rem;
  line-height: 1;
}

.faq-item[open] summary {
  background: #f1fbf5;
}

.faq-item[open] summary::after {
  content: "-";
}

.faq-item p {
  margin: 0;
  padding: 0 0.95rem 0.9rem;
}

.blog-page {
  padding: 2.2rem 0 2.8rem;
}

.blog-article {
  background: #ffffff;
  border: 1px solid var(--stroke);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.15rem;
}

.blog-article h1 {
  margin-top: 0;
}

.blog-article h2,
.blog-article h3 {
  margin-top: 1rem;
  margin-bottom: 0.45rem;
}

.blog-article p,
.blog-article li {
  color: #33473c;
}

.blog-article table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 0.75rem;
  border: 1px solid #d9ebe0;
  border-radius: 0.7rem;
  overflow: hidden;
}

.blog-article th,
.blog-article td {
  border-bottom: 1px solid #e7f4ec;
  text-align: left;
  padding: 0.65rem;
  vertical-align: top;
}

.blog-article th {
  background: #ecfaf2;
  color: #146f3b;
}

.blog-article .meta {
  margin-top: 0;
  margin-bottom: 0.9rem;
  color: #5b7064;
  font-size: 0.9rem;
}

.blog-article a {
  color: #0f7f42;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.blog-list-page {
  padding: 2.2rem 0 2.8rem;
}

.blog-list-head {
  margin-bottom: 1rem;
}

.blog-list-grid {
  display: grid;
  gap: 0.9rem;
}

.blog-card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.45rem;
  background: #ffffff;
  border: 1px solid #d0e5d9;
  border-radius: var(--radius);
  box-shadow: 0 10px 24px rgba(18, 65, 40, 0.08);
  padding: 1rem;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.blog-card:hover,
.blog-card:focus-visible {
  transform: translateY(-3px);
  box-shadow: var(--shadow);
  border-color: #95d8b4;
}

.blog-card h2 {
  margin: 0;
  font-size: 1.1rem;
}

.blog-card p {
  margin: 0.5rem 0 0;
  color: #4f6458;
}

.blog-card-btn {
  margin-top: auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 0.6rem;
  border: 1px solid #9fd8ba;
  background: #ecfaf2;
  color: #116d3a;
  font-weight: 600;
  font-size: 0.9rem;
  padding: 0.4rem 0.72rem;
}

.featured h2 {
  margin: 0;
  font-size: clamp(1.35rem, 4vw, 2rem);
}

.section-subtitle {
  margin: 0.55rem 0 1rem;
  color: var(--muted);
}

.card-grid {
  display: grid;
  gap: 0.9rem;
}

.card {
  background: #ffffff;
  border: 1px solid #d0e5d9;
  border-radius: var(--radius);
  padding: 1rem;
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}

.card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow);
  border-color: #94d7b3;
}

.card h3 {
  margin-top: 0;
  margin-bottom: 0.55rem;
}

.card p {
  margin: 0;
  color: var(--muted);
}

.site-footer {
  border-top: 1px solid var(--stroke);
  background: linear-gradient(180deg, #f5fff9 0%, #ecfbf2 100%);
}

.footer-wrap {
  padding-block: 1.8rem;
  display: grid;
  gap: 0.9rem;
}

.site-footer h2 {
  margin: 0;
  font-size: 1.2rem;
}

.site-footer p {
  margin: 0.4rem 0 0;
  color: var(--muted);
}

/* Language switch in pure CSS. */
.lang-bn {
  display: none;
  font-family: "Hind Siliguri", sans-serif;
}

#lang-switch:checked ~ .site-shell {
  font-family: "Hind Siliguri", sans-serif;
}

#lang-switch:checked ~ .site-shell .lang-en {
  display: none;
}

#lang-switch:checked ~ .site-shell .lang-bn {
  display: inline;
}

#lang-switch:checked ~ .site-shell .dropdown-toggle {
  font-family: "Hind Siliguri", sans-serif;
}

@media (min-width: 700px) {
  .main-nav {
    width: auto;
    order: 0;
  }

  .main-nav ul {
    gap: 0.2rem;
  }

  .hero {
    padding: 4.2rem 0 3rem;
  }

  .hero-grid {
    grid-template-columns: 1.2fr 0.8fr;
  }

  .search-form {
    grid-template-columns: 1fr auto;
    align-items: center;
  }

  .search-form button {
    width: auto;
    min-width: 7rem;
  }

  .card-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .bmi-grid {
    grid-template-columns: 1.15fr 0.85fr;
    align-items: start;
  }

  .energy-grid {
    grid-template-columns: 1.15fr 0.85fr;
    align-items: start;
  }

  .calorie-cards {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .features-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .topics-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .key-points-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .footer-wrap {
    grid-template-columns: 1.5fr 1fr;
    align-items: center;
  }

  .blog-article {
    padding: 1.5rem;
  }

  .blog-list-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
}