/* ─── Design Tokens — Bengali spiritual palette ─────────────────────── */
/* Warm terracotta, deep lotus red, aged parchment — evoking Bengal's temple arts */
:root, [data-theme="light"] {
  --text-xs:   clamp(0.75rem,  0.7rem  + 0.25vw, 0.875rem);
  --text-sm:   clamp(0.875rem, 0.8rem  + 0.35vw, 1rem);
  --text-base: clamp(1rem,     0.95rem + 0.25vw, 1.125rem);
  --text-lg:   clamp(1.125rem, 1rem    + 0.75vw, 1.5rem);
  --text-xl:   clamp(1.5rem,   1.2rem  + 1.25vw, 2.25rem);
  --text-2xl:  clamp(1.9rem,   1.2rem  + 2.3vw,  3.2rem);

  --space-1:  0.25rem; --space-2: 0.5rem;  --space-3: 0.75rem;
  --space-4:  1rem;    --space-5: 1.25rem; --space-6: 1.5rem;
  --space-8:  2rem;    --space-10: 2.5rem; --space-12: 3rem;
  --space-16: 4rem;    --space-20: 5rem;   --space-24: 6rem;

  /* Parchment base — aged Bengali manuscript feel */
  --color-bg:             #fdf9f3;
  --color-surface:        #f9f4ec;
  --color-surface-2:      #f3ece0;
  --color-surface-offset: #ecdfd0;
  --color-divider:        #d8ccbb;
  --color-border:         #c9baA5;
  --color-text:           #22180a;
  --color-text-muted:     #6b5740;
  --color-text-faint:     #a8907a;
  --color-text-inverse:   #fdf9f3;

  /* Primary: deep terracotta / lotus red */
  --color-primary:          #9e2a1c;
  --color-primary-hover:    #821f14;
  --color-primary-active:   #65170f;
  --color-primary-highlight: #f5dbd7;

  /* Accent: antique gold */
  --color-accent:        #8a6500;
  --color-accent-hover:  #6e5000;

  /* Category pills */
  --cat-scripture:   #7c2e0a;
  --cat-biography:   #5a2d82;
  --cat-upanishad:   #1a5c7a;
  --cat-devotion:    #9e2a1c;
  --cat-philosophy:  #1e5c30;

  --color-complete:  #1e5c30;
  --color-ongoing:   #7c4a00;

  --radius-sm: 0.375rem; --radius-md: 0.5rem;
  --radius-lg: 0.75rem;  --radius-xl: 1.25rem;
  --radius-full: 9999px;

  --shadow-card: 0 2px 10px oklch(0.18 0.06 40 / 0.08), 0 0 0 1px oklch(0.18 0.06 40 / 0.05);
  --shadow-md:   0 6px 20px oklch(0.18 0.06 40 / 0.12);

  --font-bengali:  'Hind Siliguri', 'Noto Sans Bengali', sans-serif;
  --font-display:  'Zodiak', 'Georgia', serif;
  --font-body:     'Satoshi', 'Inter', sans-serif;
  --transition:    180ms cubic-bezier(0.16, 1, 0.3, 1);
  --content-max:   1180px;
}

[data-theme="dark"] {
  --color-bg:             #120d07;
  --color-surface:        #1a1208;
  --color-surface-2:      #20180c;
  --color-surface-offset: #271e10;
  --color-divider:        #2e2010;
  --color-border:         #3d2c18;
  --color-text:           #ede3d5;
  --color-text-muted:     #8a7056;
  --color-text-faint:     #5a4530;
  --color-text-inverse:   #120d07;
  --color-primary:          #e0584a;
  --color-primary-hover:    #ea6a5d;
  --color-primary-active:   #f07d72;
  --color-primary-highlight: #3a1510;
  --color-accent:        #c8a040;
  --color-accent-hover:  #d8b050;
  --cat-scripture:   #e8845a; --cat-biography:  #b890e0;
  --cat-upanishad:   #5ab8e0; --cat-devotion:   #e06868;
  --cat-philosophy:  #72cc82;
  --color-complete:  #5ab870; --color-ongoing:  #e8a050;
  --shadow-card: 0 2px 10px oklch(0 0 0 / 0.5), 0 0 0 1px oklch(1 0 0 / 0.04);
  --shadow-md:   0 6px 20px oklch(0 0 0 / 0.5);
}

/* ─── Base ──────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html {
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}
body {
  min-height: 100dvh;
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.65;
  transition: background 0.25s, color 0.25s;
}
img, svg { display: block; max-width: 100%; }
h1, h2, h3, h4 { text-wrap: balance; line-height: 1.15; }
p, li { text-wrap: pretty; }
a { text-decoration: none; color: inherit; transition: color var(--transition); }
button { cursor: pointer; background: none; border: none; font: inherit; color: inherit; }
::selection { background: color-mix(in oklab, var(--color-primary) 20%, transparent); }
:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 3px; border-radius: var(--radius-sm); }

/* Bengali text gets Hind Siliguri */
.bn, h1, h2.card-title, .hero-subtitle-bn, .hero-eyebrow,
[lang="bn"], .filter-btn, .results-meta, .no-results p,
.card-title, .logo-text-bn, .about-title, .about-text, .footer-note,
.card-meta-item, .btn-watch, .episodes-label, .stat-label {
  font-family: var(--font-bengali), var(--font-body);
}

/* ─── Layout ─────────────────────────────────────────────────────────── */
.container {
  width: min(var(--content-max), 100% - 2rem);
  margin-inline: auto;
}

/* ─── Header ─────────────────────────────────────────────────────────── */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: oklch(from var(--color-bg) l c h / 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  transition: transform 0.3s cubic-bezier(0.16,1,0.3,1), border-color 0.3s, box-shadow 0.3s;
}
.site-header.header--hidden { transform: translateY(-100%); }
.site-header.header--scrolled { border-color: var(--color-border); box-shadow: 0 1px 6px oklch(0.15 0.06 40 / 0.08); }
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  padding-block: var(--space-3);
}
.logo {
  display: flex; align-items: center; gap: var(--space-2);
  color: var(--color-primary);
}
.logo-text-group { display: flex; flex-direction: column; gap: 0; }
.logo-text-bn {
  font-family: var(--font-bengali);
  font-size: 0.95rem; font-weight: 700;
  color: var(--color-text); line-height: 1.2;
  letter-spacing: 0;
}
.logo-text-en {
  font-size: 0.7rem; font-weight: 500;
  color: var(--color-text-muted); line-height: 1;
  font-family: var(--font-body); letter-spacing: 0.04em;
}
.header-actions { display: flex; align-items: center; gap: var(--space-3); }
.lang-switch {
  font-size: 11px; font-weight: 700; letter-spacing: 0.08em;
  color: var(--color-accent);
  border: 1px solid color-mix(in oklab, var(--color-accent) 40%, transparent);
  padding: 0.2em 0.6em; border-radius: var(--radius-full);
  transition: background var(--transition);
}
.lang-switch:hover { background: color-mix(in oklab, var(--color-accent) 10%, transparent); }
.series-count-badge {
  font-family: var(--font-bengali);
  font-size: var(--text-xs); font-weight: 700;
  background: var(--color-primary-highlight);
  color: var(--color-primary);
  padding: 0.2em 0.75em; border-radius: var(--radius-full);
}
.theme-toggle {
  display: flex; align-items: center; justify-content: center;
  width: 36px; height: 36px; border-radius: var(--radius-md);
  color: var(--color-text-muted);
  transition: background var(--transition), color var(--transition);
}
.theme-toggle:hover { background: var(--color-surface-2); color: var(--color-text); }

/* ─── Hero ───────────────────────────────────────────────────────────── */
.hero {
  padding-block: clamp(var(--space-12), 8vw, var(--space-24));
  background: linear-gradient(150deg, var(--color-surface) 0%, var(--color-bg) 55%);
  border-bottom: 1px solid var(--color-divider);
  position: relative; overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute; inset: 0;
  background: radial-gradient(ellipse 70% 60% at 85% 15%, color-mix(in oklab, var(--color-primary) 5%, transparent), transparent);
  pointer-events: none;
}
/* Decorative Bengali calligraphy pattern */
.hero::after {
  content: "ॐ";
  position: absolute; right: 6%; top: 50%; transform: translateY(-50%);
  font-size: clamp(8rem, 15vw, 16rem);
  font-family: var(--font-bengali);
  color: var(--color-primary);
  opacity: 0.04;
  pointer-events: none;
  user-select: none;
  line-height: 1;
}
.hero-eyebrow {
  font-family: var(--font-bengali);
  font-size: var(--text-xs); font-weight: 600;
  letter-spacing: 0.05em; text-transform: uppercase;
  color: var(--color-primary); margin-bottom: var(--space-3);
}
.hero-title {
  font-family: var(--font-bengali);
  font-size: var(--text-2xl); font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.01em; line-height: 1.1;
  margin-bottom: var(--space-5);
}
.hero-title em { font-style: normal; color: var(--color-primary); }
.hero-subtitle {
  font-family: var(--font-body);
  font-size: var(--text-sm); color: var(--color-text-muted);
  max-width: 64ch; line-height: 1.7; margin-bottom: var(--space-2);
}
.hero-subtitle-bn {
  font-family: var(--font-bengali);
  font-size: var(--text-sm); color: var(--color-text-faint);
  max-width: 58ch; line-height: 1.7; margin-bottom: var(--space-10);
}
.hero-stats { display: flex; align-items: center; gap: var(--space-6); flex-wrap: wrap; }
.stat { display: flex; flex-direction: column; gap: 2px; }
.stat-num {
  font-family: var(--font-bengali);
  font-size: var(--text-xl); font-weight: 700;
  color: var(--color-text); line-height: 1;
}
.stat-label {
  font-family: var(--font-bengali);
  font-size: 11px; color: var(--color-text-muted);
  text-transform: uppercase; letter-spacing: 0.05em; font-weight: 600;
}
.stat-divider { width: 1px; height: 38px; background: var(--color-border); }

/* ─── Controls ───────────────────────────────────────────────────────── */
.controls-section {
  padding-block: var(--space-5);
  position: sticky; top: 57px; z-index: 40;
  background: oklch(from var(--color-bg) l c h / 0.96);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-divider);
}
.controls-row { display: flex; flex-direction: column; gap: var(--space-3); }
.search-wrap { position: relative; display: flex; align-items: center; max-width: 460px; }
.search-icon { position: absolute; left: var(--space-3); color: var(--color-text-muted); pointer-events: none; }
.search-input {
  width: 100%;
  padding: var(--space-2) var(--space-10) var(--space-2) calc(var(--space-3) + 20px + var(--space-2));
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  font-family: var(--font-bengali);
  font-size: var(--text-sm); color: var(--color-text);
  transition: border-color var(--transition), box-shadow var(--transition);
}
.search-input::placeholder { color: var(--color-text-faint); }
.search-input:focus {
  outline: none; border-color: var(--color-primary);
  box-shadow: 0 0 0 3px color-mix(in oklab, var(--color-primary) 15%, transparent);
}
.clear-search {
  position: absolute; right: var(--space-3);
  display: flex; align-items: center; justify-content: center;
  width: 22px; height: 22px; border-radius: var(--radius-full);
  color: var(--color-text-muted); background: var(--color-surface-offset);
  transition: background var(--transition);
}
.clear-search:hover { background: var(--color-divider); }
.filter-row { display: flex; flex-wrap: wrap; gap: var(--space-2); }
.filter-btn {
  font-family: var(--font-bengali);
  font-size: var(--text-xs); font-weight: 600;
  padding: 0.3em 1em; border-radius: var(--radius-full);
  border: 1px solid var(--color-border);
  background: var(--color-surface); color: var(--color-text-muted);
  transition: background var(--transition), color var(--transition), border-color var(--transition);
}
.filter-btn:hover { background: var(--color-surface-2); color: var(--color-text); }
.filter-btn.active { background: var(--color-primary); color: white; border-color: var(--color-primary); }
.results-meta {
  font-family: var(--font-bengali);
  font-size: var(--text-xs); color: var(--color-text-faint);
  padding-top: var(--space-2);
}

/* ─── Grid ───────────────────────────────────────────────────────────── */
#main-grid { padding-block: var(--space-10) var(--space-20); }
.series-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: var(--space-6);
}

/* ─── Card ───────────────────────────────────────────────────────────── */
.series-card {
  display: flex; flex-direction: column; gap: var(--space-4);
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-card);
  padding: var(--space-6);
  opacity: 0;
  transition: transform 0.25s cubic-bezier(0.16,1,0.3,1), box-shadow 0.25s, border-color 0.25s;
}
.series-card.card-animate {
  animation: fadeUp 0.45s cubic-bezier(0.16,1,0.3,1) both;
}
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}
.series-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary);
}

.card-top { display: flex; flex-direction: column; gap: var(--space-2); }
.card-header-row {
  display: flex; align-items: flex-start;
  justify-content: space-between; gap: var(--space-2); flex-wrap: wrap;
}
.card-cats { display: flex; flex-wrap: wrap; gap: var(--space-1); }
.cat-pill {
  font-family: var(--font-bengali);
  font-size: 11px; font-weight: 700;
  letter-spacing: 0.04em; text-transform: uppercase;
  padding: 0.2em 0.65em; border-radius: var(--radius-full);
  background: color-mix(in oklab, var(--cat-color, var(--color-primary)) 12%, transparent);
  color: var(--cat-color, var(--color-primary));
}
.card-badges { display: flex; align-items: center; gap: var(--space-1); flex-shrink: 0; }
.featured-badge {
  font-family: var(--font-bengali);
  font-size: 10px; font-weight: 700; letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 0.2em 0.65em; border-radius: var(--radius-full);
  background: color-mix(in oklab, var(--color-primary) 10%, transparent);
  color: var(--color-primary);
  border: 1px solid color-mix(in oklab, var(--color-primary) 25%, transparent);
}
.status-badge {
  font-size: 10px; font-weight: 700; letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 0.2em 0.65em; border-radius: var(--radius-full);
  font-family: var(--font-bengali);
}
.status-complete { background: color-mix(in oklab, var(--color-complete) 12%, transparent); color: var(--color-complete); }
.status-ongoing  { background: color-mix(in oklab, var(--color-ongoing) 12%, transparent);  color: var(--color-ongoing); }

.card-title {
  font-family: var(--font-bengali);
  font-size: var(--text-lg); font-weight: 700;
  color: var(--color-text); line-height: 1.25;
}
.card-title-roman {
  font-family: var(--font-display);
  font-size: var(--text-sm); font-style: italic;
  color: var(--color-accent); line-height: 1.3;
}
.card-subtitle {
  font-size: var(--text-xs); color: var(--color-text-muted);
  font-family: var(--font-body); line-height: 1.5;
}

.card-meta-row {
  display: flex; flex-wrap: wrap; gap: var(--space-3);
  padding-block: var(--space-3);
  border-top: 1px solid var(--color-divider);
  border-bottom: 1px solid var(--color-divider);
}
.card-meta-item {
  display: flex; align-items: center; gap: var(--space-1);
  font-size: var(--text-xs); color: var(--color-text-muted);
  font-family: var(--font-body);
}
.card-meta-item strong { color: var(--color-text); font-weight: 600; }
.channel-meta { flex-basis: 100%; }
.channel-link-inline { color: var(--color-accent); font-weight: 600; }
.channel-link-inline:hover { text-decoration: underline; }

.card-description {
  font-family: var(--font-body);
  font-size: var(--text-sm); color: var(--color-text-muted);
  line-height: 1.7;
}

.card-episodes {
  background: var(--color-surface-2);
  border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-4);
  display: flex; flex-direction: column; gap: var(--space-2);
}
.episodes-label {
  font-family: var(--font-bengali);
  font-size: 10px; font-weight: 700; letter-spacing: 0.06em;
  text-transform: uppercase; color: var(--color-text-faint);
}
.episodes-list { list-style: none; display: flex; flex-direction: column; gap: var(--space-1); }
.episodes-list li {
  font-size: var(--text-xs); color: var(--color-text-muted);
  padding-left: var(--space-3); position: relative; line-height: 1.5;
  font-family: var(--font-bengali);
}
.episodes-list li::before { content: "›"; position: absolute; left: 0; color: var(--color-primary); font-weight: 700; }

/* Topic tags */
.card-topics { display: flex; flex-wrap: wrap; gap: var(--space-1); }
.topic-tag {
  font-family: var(--font-bengali);
  font-size: 11px; color: var(--color-text-faint);
  background: var(--color-surface-offset);
  border-radius: var(--radius-full);
  padding: 0.15em 0.6em;
}

.card-actions { display: flex; align-items: center; gap: var(--space-3); margin-top: auto; }
.btn-watch {
  display: inline-flex; align-items: center; gap: var(--space-2);
  padding: var(--space-2) var(--space-5);
  background: var(--color-primary); color: white;
  border-radius: var(--radius-full);
  font-family: var(--font-bengali);
  font-size: var(--text-sm); font-weight: 600;
  transition: background var(--transition), transform var(--transition);
}
.btn-watch:hover { background: var(--color-primary-hover); transform: scale(1.02); }
.btn-channel {
  font-size: var(--text-sm); font-weight: 500; font-family: var(--font-body);
  color: var(--color-text-muted);
  padding: var(--space-2) var(--space-4); border-radius: var(--radius-full);
  border: 1px solid var(--color-border); background: transparent;
  transition: background var(--transition), color var(--transition);
}
.btn-channel:hover { background: var(--color-surface-2); color: var(--color-text); }

mark {
  background: color-mix(in oklab, var(--color-primary) 18%, transparent);
  color: inherit; border-radius: 2px; padding: 0 2px;
}

/* ─── About Banner ───────────────────────────────────────────────────── */
.about-banner {
  background: var(--color-surface);
  border-top: 1px solid var(--color-divider);
  border-bottom: 1px solid var(--color-divider);
  padding-block: var(--space-10);
}
.about-inner {
  display: flex; gap: var(--space-6); align-items: flex-start;
}
.about-icon {
  flex-shrink: 0; width: 56px; height: 56px;
  display: flex; align-items: center; justify-content: center;
  background: color-mix(in oklab, var(--color-primary) 10%, transparent);
  color: var(--color-primary); border-radius: var(--radius-lg);
}
.about-title {
  font-family: var(--font-bengali); font-size: var(--text-lg);
  font-weight: 700; color: var(--color-text); margin-bottom: var(--space-3);
}
.about-text {
  font-family: var(--font-bengali); font-size: var(--text-sm);
  color: var(--color-text-muted); line-height: 1.75;
  max-width: 72ch;
}

/* ─── No Results ─────────────────────────────────────────────────────── */
.no-results {
  display: flex; flex-direction: column; align-items: center;
  gap: var(--space-4); padding-block: var(--space-20);
  text-align: center; color: var(--color-text-muted);
  font-family: var(--font-bengali);
}
.btn-reset {
  font-family: var(--font-bengali);
  padding: var(--space-2) var(--space-6);
  border: 1px solid var(--color-border); border-radius: var(--radius-full);
  font-size: var(--text-sm); font-weight: 600; color: var(--color-text);
  background: var(--color-surface);
  transition: background var(--transition);
}
.btn-reset:hover { background: var(--color-surface-2); }

/* ─── Footer ─────────────────────────────────────────────────────────── */
.site-footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-divider);
  padding-block: var(--space-10) var(--space-12);
}
.footer-inner { display: flex; flex-direction: column; gap: var(--space-5); }
.footer-logo {
  display: flex; align-items: center; gap: var(--space-2);
  font-family: var(--font-bengali); font-weight: 600; font-size: var(--text-sm);
  color: var(--color-text-muted);
}
.footer-note {
  font-family: var(--font-bengali); font-size: var(--text-sm);
  color: var(--color-text-muted); max-width: 72ch; line-height: 1.75;
}
.footer-channels { display: flex; flex-wrap: wrap; gap: var(--space-3); }
.channel-link {
  font-size: var(--text-xs); font-weight: 600; color: var(--color-primary);
  padding: 0.3em 1em;
  border: 1px solid color-mix(in oklab, var(--color-primary) 30%, transparent);
  border-radius: var(--radius-full);
  transition: background var(--transition);
}
.channel-link:hover { background: color-mix(in oklab, var(--color-primary) 8%, transparent); }

/* ─── Responsive ─────────────────────────────────────────────────────── */
@media (max-width: 640px) {
  .hero-stats { gap: var(--space-4); }
  .stat-divider { display: none; }
  .series-grid { grid-template-columns: 1fr; gap: var(--space-4); }
  .controls-section { position: static; }
  .card-actions { flex-direction: column; align-items: stretch; }
  .btn-watch, .btn-channel { text-align: center; justify-content: center; }
  .about-inner { flex-direction: column; }
  .hero::after { display: none; }
}
@media (max-width: 360px) { .logo-text-group { display: none; } }
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}