@import url("https://fonts.googleapis.com/css2?family=Hind+Siliguri:wght@400;500;600;700&display=swap");

@font-face {
  font-family: "Li Alinur Sangbadpatra";
  src: url("fonts/Li-Alinur-Sangbadpatra-regular.ttf") format("truetype");
  font-style: normal;
  font-weight: 400;
  font-display: swap;
}

@font-face {
  font-family: "Li Alinur Sangbadpatra";
  src: url("fonts/Li-Alinur-Sangbadpatra-italic.ttf") format("truetype");
  font-style: italic;
  font-weight: 400;
  font-display: swap;
}

@font-face {
  font-family: "BL Bongolipi Press";
  src: url("fonts/BL-Bongolipi-press-regular.ttf") format("truetype");
  font-style: normal;
  font-weight: 400;
  font-display: swap;
}

@font-face {
  font-family: "BL Bongolipi Press";
  src: url("fonts/BL-Bongolipi-press-italic.ttf") format("truetype");
  font-style: italic;
  font-weight: 400;
  font-display: swap;
}

:root {
  --paper: #f5ecdd;
  --paper-2: #fcf8f1;
  --ink: #1f1a18;
  --muted: #685d54;
  --line: rgba(31, 26, 24, 0.11);
  --red: #7f1d21;
  --navy: #1c2d49;
  --beige: #e5d8c6;
  --radius-xl: 34px;
  --radius-lg: 22px;
  --container: 1380px;
  --gutter: clamp(16px, 2.5vw, 36px);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--red);
  font-family: "BL Bongolipi Press", "Hind Siliguri", sans-serif;
  line-height: 1.72;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(circle at 18% 16%, rgba(255,255,255,0.22), transparent 24%),
    radial-gradient(circle at 82% 14%, rgba(255,255,255,0.12), transparent 22%),
    radial-gradient(circle at 50% 50%, rgba(0,0,0,0.014), transparent 42%),
    repeating-linear-gradient(90deg, rgba(255,255,255,0.016) 0 1px, transparent 1px 7px);
  opacity: 0.2;
  mix-blend-mode: multiply;
}

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

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

button,
input,
textarea,
select {
  font: inherit;
}

::selection {
  background: rgba(127, 29, 33, 0.14);
}

.site-shell {
  width: min(var(--container), calc(100vw - var(--gutter) * 2));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(250, 244, 236, 0.96);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(31, 26, 24, 0.1);
}

.site-header .site-shell {
  min-height: 84px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
}

.brand-mark {
  width: 44px;
  height: 44px;
  object-fit: cover;
  border-radius: 14px;
  box-shadow: 0 6px 16px rgba(28,45,73,0.1);
}

.brand-text {
  display: grid;
  gap: 2px;
}

.brand-text strong {
  font-family: "Li Alinur Sangbadpatra", "Hind Siliguri", serif;
  font-weight: 400;
  font-size: 1.45rem;
  line-height: 1;
}

.brand-text span {
  color: var(--muted);
  font-size: 0.82rem;
}

.nav-toggle {
  display: none;
  min-width: 44px;
  min-height: 44px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.5);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 10px;
}

.site-nav a {
  padding: 12px 14px;
  border-radius: 999px;
  color: var(--muted);
  transition: background 180ms ease, color 180ms ease, transform 180ms ease;
}

.site-nav a:hover,
.site-nav a.is-active {
  color: var(--ink);
  background: rgba(255,255,255,0.7);
  transform: translateY(-1px);
}

.site-main {
  padding: 28px 0 72px;
}

.page {
  display: grid;
  gap: 32px;
}

.hero,
.section,
.panel,
.footer {
  background: rgba(252, 248, 241, 0.96);
  border: 1px solid rgba(31, 26, 24, 0.1);
  box-shadow: 0 14px 30px rgba(28, 45, 73, 0.05);
}

.hero {
  position: relative;
  overflow: hidden;
  border-radius: 38px;
  padding: clamp(30px, 3.4vw, 52px);
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 77% 24%, rgba(127,29,33,0.05), transparent 16%),
    radial-gradient(circle at 14% 10%, rgba(28,45,73,0.03), transparent 14%);
  pointer-events: none;
}

.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(320px, 0.92fr);
  gap: clamp(24px, 3vw, 42px);
  align-items: center;
}

.eyebrow,
.section-label,
.card-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--red);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.72rem;
}

.eyebrow::before,
.section-label::before,
.card-kicker::before {
  content: "";
  width: 28px;
  height: 1px;
  background: currentColor;
}

.hero h1,
.section-title,
.feature-title,
.card-title {
  font-family: "Li Alinur Sangbadpatra", "Hind Siliguri", serif;
  font-weight: 400;
  line-height: 0.98;
  letter-spacing: -0.02em;
  margin: 0;
}

.hero h1 {
  font-size: clamp(4.6rem, 9vw, 8.8rem);
  max-width: 8.3ch;
  margin-top: 10px;
}

.hero-copy,
.section-subtitle,
.card-text,
.footer p,
.footer a,
.brand-text span {
  color: var(--muted);
}

.hero-copy {
  max-width: 58ch;
  font-size: 1.02rem;
  margin: 18px 0 26px;
}

.hero-actions,
.book-actions,
.card-actions,
.tag-row,
.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 18px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.6);
  transition: transform 180ms ease, background 180ms ease, border-color 180ms ease;
}

.btn:hover {
  transform: translateY(-1px);
  border-color: rgba(127,29,33,0.22);
  background: rgba(255,255,255,0.86);
}

.btn-primary {
  background: var(--red);
  color: #fbf4ea;
  border-color: rgba(127,29,33,0.26);
}

.btn-primary:hover {
  background: #8a2226;
}

.hero-meta {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 28px;
}

.meta-card,
.content-card,
.book-card,
.article-card,
.event-card,
.session-card,
.member-card,
.timeline-card,
.stat-card,
.list-panel,
.faq-item {
  border: 1px solid rgba(31, 26, 24, 0.09);
  border-radius: var(--radius-lg);
  background: rgba(255,252,247,0.94);
}

.meta-card,
.content-card,
.book-card,
.article-card,
.event-card,
.session-card,
.member-card,
.timeline-card,
.stat-card {
  padding: 18px;
}

.meta-card strong {
  display: block;
  font-family: "Li Alinur Sangbadpatra", "Hind Siliguri", serif;
  font-weight: 400;
  font-size: 1.45rem;
  margin-bottom: 10px;
}

.hero-visual {
  position: relative;
}

.visual-frame {
  border-radius: 32px;
  overflow: hidden;
  border: 1px solid rgba(31, 26, 24, 0.1);
  background: #f7f1e7;
  box-shadow: 0 18px 36px rgba(28, 45, 73, 0.06);
}

.floating-card {
  position: absolute;
  right: -12px;
  bottom: -12px;
  width: min(46%, 252px);
  padding: 16px;
  border-radius: 22px;
  background: rgba(248,243,234,0.96);
  border: 1px solid rgba(31, 26, 24, 0.09);
  box-shadow: 0 16px 30px rgba(28, 45, 73, 0.06);
}

.floating-card small {
  display: block;
  color: var(--red);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 0.7rem;
  margin-bottom: 10px;
}

.floating-card strong {
  display: block;
  font-family: "Li Alinur Sangbadpatra", "Hind Siliguri", serif;
  font-weight: 400;
  font-size: 1.28rem;
  line-height: 1.12;
}

.section {
  border-radius: 34px;
  padding: clamp(24px, 2.8vw, 40px);
}

.section-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 22px;
}

.section-title {
  font-size: clamp(2rem, 3.4vw, 3.4rem);
}

.section-subtitle {
  max-width: 48ch;
}

.grid-2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 18px; }
.grid-aside { display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(300px, 0.6fr); gap: 18px; }

.content-card,
.book-card,
.article-card,
.event-card,
.session-card,
.member-card,
.timeline-card { box-shadow: 0 8px 18px rgba(28, 45, 73, 0.035); }

.card-title {
  margin: 12px 0 10px;
  font-size: 1.4rem;
  line-height: 1.06;
}

.tag,
.chip {
  min-height: 32px;
  padding: 0 12px;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.78rem;
  border: 1px solid rgba(127,29,33,0.12);
  background: rgba(127,29,33,0.08);
  color: var(--red);
}

.chip {
  border-color: rgba(28,45,73,0.12);
  background: rgba(28,45,73,0.06);
  color: var(--navy);
  cursor: pointer;
}

.chip.is-active {
  background: var(--red);
  color: #fbf4ea;
  border-color: transparent;
}

.book-card {
  display: grid;
  gap: 14px;
}

.book-cover {
  aspect-ratio: 4 / 5;
  border-radius: 18px;
  overflow: hidden;
  position: relative;
  background: #7f1d21;
  color: #fbf4ea;
}

.book-cover.navy {
  background: var(--navy);
}

.book-cover::before {
  content: "";
  position: absolute;
  inset: 14px;
  border: 1px solid rgba(255,255,255,0.18);
  border-radius: 14px;
}

.book-cover .cover-lines {
  position: absolute;
  inset: 20px;
  display: grid;
  align-content: space-between;
}

.cover-lines span {
  height: 1px;
  background: rgba(255,255,255,0.4);
}

.cover-title {
  position: absolute;
  left: 18px;
  right: 18px;
  bottom: 18px;
  font-family: "Li Alinur Sangbadpatra", "Hind Siliguri", serif;
  font-size: 1.42rem;
  line-height: 1.05;
}

.book-meta,
.article-meta,
.event-meta,
.session-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  color: var(--muted);
  font-size: 0.88rem;
}

.book-actions,
.card-actions {
  align-items: center;
  justify-content: space-between;
  margin-top: auto;
}

.book-progress {
  height: 7px;
  border-radius: 999px;
  background: rgba(28,45,73,0.08);
  overflow: hidden;
}

.book-progress span {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: var(--navy);
}

.panel {
  border-radius: var(--radius-xl);
  padding: 18px;
}

.panel-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}

.panel h3 {
  margin: 0;
  font-family: "Li Alinur Sangbadpatra", "Hind Siliguri", serif;
  font-size: 1.7rem;
  font-weight: 400;
  line-height: 1;
}

.searchbar { position: relative; }
.searchbar input {
  width: 100%;
  min-height: 50px;
  border-radius: 999px;
  border: 1px solid rgba(31,26,24,0.12);
  background: rgba(255,255,255,0.7);
  padding: 0 54px 0 20px;
}
.searchbar input::placeholder { color: rgba(104,93,84,0.76); }
.searchbar svg {
  position: absolute;
  right: 18px;
  top: 50%;
  transform: translateY(-50%);
  opacity: 0.45;
}

.library-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.toggle-group {
  display: inline-flex;
  gap: 8px;
  padding: 6px;
  border-radius: 999px;
  background: rgba(255,255,255,0.56);
  border: 1px solid rgba(31,26,24,0.08);
}

.toggle-group button {
  border: 0;
  background: transparent;
  padding: 10px 12px;
  border-radius: 999px;
  color: var(--muted);
}

.toggle-group button.is-active {
  background: var(--red);
  color: #fbf4ea;
}

.library-grid[data-layout="list"] {
  grid-template-columns: 1fr;
}

.library-grid[data-layout="list"] .book-card {
  grid-template-columns: 220px minmax(0, 1fr);
  align-items: stretch;
}

.library-grid[data-layout="list"] .book-cover {
  grid-row: 1 / span 5;
}

.library-grid[data-layout="list"] .book-card > :not(.book-cover) {
  grid-column: 2;
}

.list-panel { padding: 18px; display: grid; gap: 14px; }
.list-item { display: grid; gap: 8px; padding-bottom: 14px; border-bottom: 1px solid rgba(31,26,24,0.08); }
.list-item:last-child { padding-bottom: 0; border-bottom: 0; }

.article-card.featured {
  min-height: 520px;
  display: grid;
  grid-template-rows: auto 1fr auto;
}

.article-hero {
  border-radius: 22px;
  overflow: hidden;
  min-height: 230px;
  background: #e8ddce;
}

.author-card {
  display: grid;
  grid-template-columns: 54px 1fr;
  gap: 14px;
  padding: 16px 0;
  border-bottom: 1px solid rgba(31,26,24,0.08);
}

.author-card:last-child { border-bottom: 0; }
.avatar {
  width: 54px;
  height: 54px;
  border-radius: 50%;
  background: var(--red);
}
.avatar.alt { background: var(--beige); }
.avatar.mid { background: var(--navy); }

.doc-feature {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: 18px;
}

.screen {
  border-radius: 28px;
  overflow: hidden;
  background: var(--navy);
  padding: 14px;
  min-height: 360px;
}

.screen .screen-inner {
  width: 100%;
  height: 100%;
  border-radius: 20px;
  background: #f8f2e7;
  display: grid;
  place-items: center;
}

.screen .play-button {
  width: 88px;
  height: 88px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: rgba(255,255,255,0.8);
  box-shadow: 0 12px 26px rgba(28,45,73,0.08);
}

.progress-track {
  width: 100%;
  height: 8px;
  border-radius: 999px;
  background: rgba(28,45,73,0.1);
  overflow: hidden;
}

.progress-track span {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: var(--red);
}

.schedule { display: grid; gap: 12px; }
.schedule-row {
  display: grid;
  grid-template-columns: 96px 1fr auto;
  gap: 14px;
  align-items: center;
  padding: 14px 16px;
  border-radius: 18px;
  background: rgba(255,255,255,0.66);
  border: 1px solid rgba(31,26,24,0.08);
}
.schedule-row time {
  color: var(--red);
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.stat-card strong {
  display: block;
  font-family: "Li Alinur Sangbadpatra", "Hind Siliguri", serif;
  font-size: 2.3rem;
  line-height: 0.95;
  margin-bottom: 10px;
}

.cta-band {
  border-radius: 38px;
  padding: clamp(24px, 3vw, 38px);
  background: var(--navy);
  color: #fbf4ea;
}

.cta-band .section-label,
.cta-band .section-title,
.cta-band .section-subtitle {
  color: inherit;
}

.footer {
  margin-top: 34px;
  border-radius: 34px;
  padding: 24px clamp(22px, 3vw, 34px);
}

.footer-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.footer h4 {
  margin: 0 0 10px;
  font-family: "Li Alinur Sangbadpatra", "Hind Siliguri", serif;
  font-size: 1.4rem;
  font-weight: 400;
}

.footer-links { display: grid; gap: 10px; }
.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 14px;
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px solid rgba(31,26,24,0.08);
  color: var(--muted);
}

.timeline { display: grid; gap: 14px; }

.faq-item summary {
  list-style: none;
  cursor: pointer;
  font-family: "Li Alinur Sangbadpatra", "Hind Siliguri", serif;
  font-size: 1.32rem;
  padding: 18px;
}

.faq-item summary::-webkit-details-marker { display: none; }
.faq-item .faq-body { padding: 0 18px 18px; color: var(--muted); }

.two-col { display: grid; grid-template-columns: minmax(0, 1fr) minmax(320px, 0.56fr); gap: 18px; }

.calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: 8px;
}

.calendar-grid span,
.calendar-grid b {
  min-height: 48px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(31,26,24,0.08);
  background: rgba(255,255,255,0.6);
  color: var(--muted);
}

.hero,
.section,
.footer {
  position: relative;
}

.hero::after,
.section::after,
.footer::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  border-radius: inherit;
  background:
    linear-gradient(180deg, rgba(255,255,255,0.16), transparent 20%),
    radial-gradient(circle at 80% 24%, rgba(127,29,33,0.04), transparent 16%);
  opacity: 0.5;
}

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

.countdown .timebox {
  min-width: 88px;
  padding: 14px;
  border-radius: 18px;
  background: rgba(255,255,255,0.7);
  border: 1px solid rgba(31,26,24,0.08);
  text-align: center;
}

.countdown strong {
  display: block;
  font-family: "Li Alinur Sangbadpatra", "Hind Siliguri", serif;
  font-size: 1.8rem;
  font-weight: 400;
}

.progress-steps { display: grid; gap: 14px; }
.step { display: grid; grid-template-columns: 36px 1fr; gap: 14px; align-items: start; }
.dot {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: var(--red);
  color: #fbf4ea;
}

.form { display: grid; gap: 14px; }
.field { display: grid; gap: 8px; }
.field input,
.field select,
.field textarea {
  width: 100%;
  border-radius: 18px;
  border: 1px solid rgba(31,26,24,0.12);
  background: rgba(255,255,255,0.72);
  min-height: 50px;
  padding: 0 16px;
}
.field textarea { min-height: 120px; padding: 14px 16px; resize: vertical; }

.hidden { display: none !important; }

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 700ms ease, transform 700ms ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 1180px) {
  .hero-grid,
  .doc-feature,
  .grid-aside,
  .two-col,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .grid-4,
  .stat-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 920px) {
  .nav-toggle {
    display: inline-grid;
    place-items: center;
  }

  .site-nav {
    position: absolute;
    top: 84px;
    left: 0;
    right: 0;
    padding: 14px var(--gutter) 18px;
    display: grid;
    grid-template-columns: 1fr;
    background: rgba(246,239,228,0.97);
    border-bottom: 1px solid rgba(31,26,24,0.08);
    transform-origin: top;
    transform: scaleY(0.94);
    opacity: 0;
    pointer-events: none;
    transition: opacity 180ms ease, transform 180ms ease;
  }

  .site-nav.is-open {
    opacity: 1;
    transform: scaleY(1);
    pointer-events: auto;
  }

  .site-nav a {
    width: 100%;
    border-radius: 16px;
    background: rgba(255,255,255,0.54);
  }

  .hero-meta,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }

  .schedule-row {
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .library-grid[data-layout="list"] .book-card {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 560px) {
  .site-shell {
    width: min(var(--container), calc(100vw - 20px));
  }

  .hero,
  .section,
  .footer {
    border-radius: 26px;
  }

  .hero h1 {
    font-size: clamp(3rem, 16vw, 4.8rem);
  }

  .section-title {
    font-size: clamp(1.8rem, 10vw, 2.8rem);
  }

  .brand-text span {
    display: none;
  }

  .floating-card {
    position: static;
    width: 100%;
    margin-top: 14px;
  }
}