:root {
  --bg-color: rgb(245, 245, 245);
  --article-bg: white;
  --icon-size: 20px;
  --theme-dark: #171B33;
  --theme-mid: #30495B;
  --theme-lite: #64757E;
  --theme-announcement-color: #6F0000;
  --theme-header-color: #171B33;
  --theme-summary-color: rgb(35, 35, 35);
  --theme-article-date-color: #C16A6A;
  --theme-grey-font: #B0B0B0;
  --nav-font-color: white;
  --swiper-navigation-color: var(--theme-mid);
  --swiper-theme-color: var(--theme-mid) !important;
  --total-col: 12;
  --gutter-width: 0px;
  --font-color-title: black;
  --font-color-summary: black;
  --font-color-metadata: #6F0000;
  --font-color-navSelected: rgb(172, 167, 197);
  --single-article-bg: white;
  --bangla-font: "Noto Serif Bengali", serif;
  --player-default-color: var(--theme-dark);
  --small-button-width: 22px;
  --large-button-size: 52px;
  --player-min-width: 250px;
  --player-max-width: 500px;
  --pbar-bgcolor: var(--theme-dark);
  --pbar-fgcolor: #0085FF;
  --rewind-15sec-btn: url(/images/UI/icon-rewind.svg);
  --forward-15sec-btn: url(/images/UI/icon-forward.svg);
  --player-icon: url(/images/UI/icon-play.svg);
  --pause-icon: url(/images/UI/icon-pause.svg);
  --sound-on-btn: url(/images/UI/btn-sound-on.svg);
  --sound-off-btn: url(/images/UI/btn-sound-off.svg);
}
@media (prefers-color-scheme: dark) {
  :root {
    --theme-dark: black;
    --bg-color: rgb(43, 43, 43);
    --article-bg: rgb(35, 35, 38);
    --font-color-title: rgb(255, 255, 255);
    --font-color-summary: white;
    --theme-summary-color: rgb(210, 210, 210);
    --theme-announcement-color: #575656;
    --font-color-metadata: #615d5d;
    --font-color-navSelected: rgb(104, 150, 241);
    --single-article-bg: rgb(30, 30, 30);
    --player-default-color: var(--theme-lite);
    --small-button-width: 22px;
    --large-button-size: 52px;
    --player-min-width: 250px;
    --player-max-width: 500px;
    --pbar-bgcolor: var(--theme-dark);
    --pbar-fgcolor: #8a8abf;
    --rewind-15sec-btn: url(/images/UI/icon-rewind-darkmode.svg);
    --forward-15sec-btn: url(/images/UI/icon-forward-darkmode.svg);
    --player-icon: url(/images/UI/icon-play-darkmode.svg);
    --pause-icon: url(/images/UI/icon-pause-darkmode.svg);
    --sound-on-btn: url(/images/UI/btn-sound-on-darkmode.svg);
    --sound-off-btn: url(/images/UI/btn-sound-off-darkmode.svg);
  }
}
@media (prefers-color-scheme: light) {
  :root {
    --font-color-title: var(--theme-dark);
    --single-article-bg: white;
  }
}

body {
  background-color: var(--bg-color);
  color: var(--font-color-title);
}

@media print {
  .no-print, .no-print * {
    display: none !important;
  }
}a.active {
  text-decoration: underline;
}

.header-nav {
  background-color: var(--theme-dark, #1a1a2e);
  top: 0px;
  z-index: 999;
  line-height: 2;
  grid-column: span 12;
  font-family: var(--bangla-font);
  position: sticky;
  transition: 0.5s ease;
  height: fit-content;
  padding: 15px;
}
.header-nav.nav-up {
  top: -100px;
}
@media all and (max-width: 600px) {
  .header-nav {
    padding: 10px 15px;
  }
}
.header-nav .mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  z-index: 1001;
}
@media all and (max-width: 600px) {
  .header-nav .mobile-menu-btn {
    display: flex;
    align-items: center;
    justify-content: center;
  }
}
.header-nav .mobile-menu-btn .hamburger-icon {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  width: 24px;
  height: 18px;
}
.header-nav .mobile-menu-btn .hamburger-icon span {
  display: block;
  height: 2px;
  width: 100%;
  background-color: white;
  border-radius: 2px;
  transition: all 0.3s ease;
}
.header-nav .nav-top {
  list-style-type: none;
  padding-left: unset;
  display: flex;
  justify-content: center;
  padding-top: unset;
  margin-top: unset;
  position: relative;
  flex-wrap: wrap;
  color: var(--nav-font-color);
  max-width: 1300px;
  margin-left: auto;
  margin-right: auto;
  gap: 5px 5px;
  font-family: var(--bangla-font);
  height: fit-content;
}
@media all and (max-width: 600px) {
  .header-nav .nav-top {
    display: none;
  }
}
.header-nav .nav-top ul {
  display: flex;
  list-style: none;
  padding: 0;
  margin: 0;
  width: 100%;
  flex-wrap: wrap;
  justify-content: center;
}
.header-nav .nav-top ul li {
  margin-left: 0.25vw;
  margin-right: 0.25vw;
  white-space: nowrap;
  font-size: 1rem;
  pointer-events: auto;
  cursor: pointer;
}
@media all and (min-width: 601px) and (max-width: 1024px) {
  .header-nav .nav-top ul li {
    font-size: 0.7rem;
  }
}
.header-nav .nav-top ul li a {
  text-decoration: unset;
  color: white;
  font-size: 0.75rem;
}
.header-nav .nav-top ul li.selected {
  font-weight: 700;
  color: var(--font-color-navSelected);
}
.header-nav .nav-top ul li:not(:last-child)::after {
  content: " | ";
  padding-left: 0.5vw;
}
.header-nav .nav-top ul li.end-of-row::after {
  content: none;
}
.header-nav .mobile-nav-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 1000;
  opacity: 0;
  transition: opacity 0.3s ease;
}
@media all and (max-width: 600px) {
  .header-nav .mobile-nav-overlay {
    display: block;
    pointer-events: none;
  }
}
.header-nav .mobile-nav-overlay.is-visible {
  opacity: 1;
  pointer-events: auto;
}
.header-nav .mobile-nav {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 280px;
  max-width: 85vw;
  height: 100vh;
  background: var(--theme-dark, #1a1a2e);
  z-index: 1001;
  transform: translateX(-100%);
  transition: transform 0.3s ease;
  flex-direction: column;
  box-shadow: 4px 0 20px rgba(0, 0, 0, 0.3);
}
@media all and (max-width: 600px) {
  .header-nav .mobile-nav {
    display: flex;
  }
}
.header-nav .mobile-nav.is-open {
  transform: translateX(0);
}
.header-nav .mobile-nav .mobile-nav-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}
.header-nav .mobile-nav .mobile-nav-title {
  color: white;
  font-size: 1.1rem;
  font-weight: 600;
}
.header-nav .mobile-nav .mobile-nav-close {
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
}
.header-nav .mobile-nav .mobile-nav-close svg {
  width: 24px;
  height: 24px;
}
.header-nav .mobile-nav ul {
  list-style: none;
  padding: 0;
  margin: 0;
  flex: 1;
  overflow-y: auto;
}
.header-nav .mobile-nav ul li {
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}
.header-nav .mobile-nav ul li a {
  display: block;
  padding: 14px 20px;
  color: rgba(255, 255, 255, 0.85);
  text-decoration: none;
  font-size: 1rem;
  transition: all 0.2s ease;
}
.header-nav .mobile-nav ul li a:hover, .header-nav .mobile-nav ul li a:focus {
  background: rgba(255, 255, 255, 0.1);
  color: white;
}
.header-nav .mobile-nav ul li a.active {
  background: rgba(255, 255, 255, 0.15);
  color: white;
  font-weight: 600;
  border-left: 3px solid white;
}.footer {
  border-top: 1px solid rgba(0, 0, 0, 0.08);
  padding: 1.5rem 1rem 1rem;
  background: #fff;
}
@media all and (max-width: 600px) {
  .footer {
    padding: 1.25rem 0.75rem 1rem;
  }
}
.footer .inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 1rem 2rem;
}
@media all and (max-width: 600px) {
  .footer .inner {
    flex-direction: column;
    gap: 0.75rem;
  }
}
@media all and (max-width: 600px) {
  .footer .nav,
  .footer .social {
    width: 100%;
  }
}
.footer ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  gap: 0.5rem;
  text-align: center;
  justify-content: center;
}
@media all and (max-width: 600px) {
  .footer ul {
    gap: 0.4rem;
  }
}
.footer li a {
  font-size: 0.9rem;
}
@media all and (max-width: 600px) {
  .footer li a {
    font-size: 0.8rem;
    padding: 0.25rem 0.5rem;
    display: inline-block;
  }
}
.footer a {
  color: #222;
  text-decoration: none;
  opacity: 0.85;
}
.footer a:hover, .footer a:focus-visible {
  opacity: 1;
  text-decoration: underline;
}
.footer .bottom {
  max-width: 1200px;
  margin: 1rem auto 0;
  padding-top: 0.75rem;
  border-top: 1px solid rgba(0, 0, 0, 0.06);
  color: #666;
  text-align: center;
}
@media all and (max-width: 600px) {
  .footer .bottom {
    margin-top: 0.75rem;
    padding-top: 0.5rem;
  }
}
.footer .bottom small {
  font-size: 0.85rem;
}
@media all and (max-width: 600px) {
  .footer .bottom small {
    font-size: 0.75rem;
  }
}.gallery-swiper {
  --swiper-pagination-bottom: 12px;
}

.books-gallery-container {
  padding: 0 1rem;
  box-sizing: border-box;
  max-width: 100%;
}
.books-gallery-container swiper-container {
  width: calc(100% - 50px);
  height: auto;
  display: block;
  padding-bottom: 50px;
}
.books-gallery-container swiper-container swiper-slide {
  height: auto;
  display: flex;
  flex-direction: column;
}
.books-gallery-container swiper-container swiper-slide .card {
  margin: 0;
  background: #fff;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  border: 1px solid #eee;
}
.books-gallery-container swiper-container swiper-slide .card .image-wrapper {
  width: 100%;
  aspect-ratio: 3/4.5;
  overflow: hidden;
  background: #f4f4f4;
}
.books-gallery-container swiper-container swiper-slide .card .image-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.books-gallery-container swiper-container swiper-slide .card .caption {
  padding: 1rem;
  font-size: 1rem;
  font-weight: 500;
  color: #333;
  text-align: center;
}
.books-gallery-container .swiper-button-next,
.books-gallery-container .swiper-button-prev {
  background-color: white;
  padding: 12px;
  border-radius: 50%;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
  color: #333 !important;
}.left-rail {
  grid-column: 1/span 3;
  background-color: var(--bg-color);
  min-width: 0px;
  width: 100%;
}
@media all and (max-width: 600px) {
  .left-rail {
    grid-column: 1/-1;
    display: none;
  }
}
.left-rail .logo {
  width: 50%;
  margin-left: auto;
  margin-right: auto;
  padding-top: 50px;
  padding-bottom: 50px;
}
.left-rail .logo img {
  width: 100%;
  height: auto;
}.main-content[data-astro-cid-ftvwmmpp]{grid-column:4/span 9;background-color:var(--bg-color)}@media all and (max-width: 600px){.main-content[data-astro-cid-ftvwmmpp]{grid-column:1/span 12}}.main-container[data-astro-cid-ivdev4kk]{display:grid;grid-template-columns:repeat(12,1fr);gap:16px;width:100%;margin:0 auto}html{-webkit-text-size-adjust:100%;text-rendering:optimizeLegibility}html,body{margin:0;width:100%;min-height:100%}