/* ==========================================================================
   संस्कृति Prakashan — Core Design System
   Palette extracted from the official brand logo
   ========================================================================== */

/* ---------------------------------------------------------------- Tokens */
:root {
  /* Brand — sampled from logo */
  --maroon: #4a142b;
  --maroon-700: #601830;
  --maroon-500: #7a2544;
  --maroon-300: #a5567a;
  --maroon-050: #f6eef2;

  --green: #1a6a4a;
  --green-600: #17805a;
  --green-300: #74b198;
  --green-050: #eef7f2;

  --orange: #e07a1e;
  --orange-400: #f0901d;
  --orange-200: #f7c98a;
  --orange-050: #fdf3e7;

  --blue: #178aa8;
  --blue-400: #22a8c4;
  --blue-200: #9ad8e6;
  --blue-050: #ecf7fa;

  --red: #c02434;
  --gold: #c6a054;

  /* Neutrals */
  --white: #ffffff;
  --bg: #ffffff;
  --bg-soft: #f7f6f4;
  --bg-tint: #faf8f6;
  --line: #e8e4e0;
  --line-soft: #f0edea;

  --ink: #2b2b31;
  --ink-strong: #17161a;
  --muted: #6b6a72;
  --muted-2: #8e8d95;

  /* Gradients */
  --grad-brand: linear-gradient(120deg, var(--maroon) 0%, var(--maroon-500) 45%, var(--orange) 130%);
  --grad-accent: linear-gradient(120deg, var(--orange) 0%, #e05a2e 100%);
  --grad-leaf: linear-gradient(120deg, var(--green) 0%, var(--blue) 100%);
  --grad-sky: linear-gradient(120deg, var(--blue) 0%, var(--green-600) 100%);
  --grad-warm: linear-gradient(135deg, #fff9f2 0%, #fdf1f5 50%, #eef7f4 100%);
  --grad-text: linear-gradient(100deg, var(--maroon) 0%, var(--orange) 55%, var(--green) 100%);

  /* Shadows */
  --sh-xs: 0 1px 2px rgba(24, 12, 20, .05);
  --sh-sm: 0 2px 10px rgba(24, 12, 20, .06);
  --sh-md: 0 10px 30px -12px rgba(24, 12, 20, .16);
  --sh-lg: 0 26px 60px -22px rgba(24, 12, 20, .24);
  --sh-xl: 0 40px 90px -30px rgba(24, 12, 20, .30);
  --sh-brand: 0 18px 40px -16px rgba(74, 20, 43, .45);
  --sh-book: 0 26px 50px -18px rgba(24, 12, 20, .38);

  /* Geometry */
  --r-sm: 10px;
  --r-md: 16px;
  --r-lg: 22px;
  --r-xl: 30px;
  --r-pill: 999px;

  --nav-h: 78px;
  --shell: 1280px;
  --ease: cubic-bezier(.22, 1, .36, 1);
  --ease-io: cubic-bezier(.65, 0, .35, 1);

  /* Fonts */
  --f-body: "Poppins", system-ui, -apple-system, "Segoe UI", sans-serif;
  --f-display: "Playfair Display", Georgia, "Times New Roman", serif;

  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  :root { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-padding-top: calc(var(--nav-h) + 16px);
  /* clip (not hidden) so position:sticky keeps working in the header */
  overflow-x: clip;
}

body {
  margin: 0;
  font-family: var(--f-body);
  font-size: 1rem;
  line-height: 1.72;
  color: var(--ink);
  background: var(--bg);
  overflow-x: clip;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--f-display);
  color: var(--ink-strong);
  font-weight: 700;
  line-height: 1.16;
  letter-spacing: -.015em;
  margin: 0 0 .6em;
}

h1 { font-size: clamp(2.3rem, 5.2vw, 4rem); }
h2 { font-size: clamp(1.85rem, 3.6vw, 2.85rem); }
h3 { font-size: clamp(1.25rem, 2.1vw, 1.6rem); }
h4 { font-size: clamp(1.08rem, 1.6vw, 1.26rem); }

p { margin: 0 0 1.1rem; color: var(--muted); }

a { color: var(--maroon); text-decoration: none; transition: color .25s var(--ease); }
a:hover { color: var(--orange); }

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

ul, ol { margin: 0 0 1.1rem; padding-left: 1.2rem; }

::selection { background: var(--maroon); color: #fff; }

:focus-visible {
  outline: 3px solid var(--blue-400);
  outline-offset: 3px;
  border-radius: 6px;
}

/* Skip link — accessibility */
.skip-link {
  position: absolute;
  left: 50%;
  top: -80px;
  transform: translateX(-50%);
  z-index: 3000;
  background: var(--maroon);
  color: #fff;
  padding: .7rem 1.4rem;
  border-radius: 0 0 var(--r-md) var(--r-md);
  font-weight: 600;
  font-size: .9rem;
  transition: top .3s var(--ease);
}
.skip-link:focus { top: 0; color: #fff; }

/* ---------------------------------------------------------------- Layout */
.shell { width: 100%; max-width: var(--shell); margin-inline: auto; padding-inline: 1.25rem; }

@media (min-width: 992px) { .shell { padding-inline: 2rem; } }

section { position: relative; }

.sec {
  padding-block: clamp(4rem, 9vw, 7.5rem);
  position: relative;
}
.sec--tight { padding-block: clamp(3rem, 6vw, 5rem); }
.sec--soft { background: var(--bg-soft); }
.sec--tint { background: var(--grad-warm); }
.sec--dark {
  background:
    radial-gradient(1000px 500px at 12% -10%, rgba(224,122,30,.20), transparent 60%),
    radial-gradient(900px 460px at 92% 10%, rgba(23,138,168,.20), transparent 60%),
    linear-gradient(160deg, #2e0c1c 0%, var(--maroon) 55%, #34142a 100%);
  color: #f4eef1;
}
.sec--dark h2, .sec--dark h3, .sec--dark h4 { color: #fff; }
.sec--dark p { color: rgba(255, 255, 255, .74); }

/* Section heading block */
.sec-head { max-width: 720px; margin: 0 auto clamp(2.4rem, 5vw, 3.6rem); text-align: center; }
.sec-head--left { margin-inline: 0; text-align: left; }
.sec-head p { font-size: 1.04rem; margin-bottom: 0; }
.sec-head h2 { margin-bottom: .5rem; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  font-family: var(--f-body);
  font-size: .74rem;
  font-weight: 600;
  letter-spacing: .19em;
  text-transform: uppercase;
  color: var(--maroon-500);
  background: var(--maroon-050);
  border: 1px solid rgba(74, 20, 43, .10);
  padding: .42rem 1rem;
  border-radius: var(--r-pill);
  margin-bottom: 1.1rem;
}
.eyebrow i { color: var(--orange); font-size: .82em; }
.sec--dark .eyebrow {
  color: #ffd9a8;
  background: rgba(255, 255, 255, .09);
  border-color: rgba(255, 255, 255, .16);
}
.sec--dark .eyebrow i { color: var(--orange-200); }

.grad-text {
  background: var(--grad-text);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  -webkit-text-fill-color: transparent;
}

.lead { font-size: clamp(1.02rem, 1.5vw, 1.14rem); color: var(--muted); }

/* Decorative rule under headings */
.rule {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  margin: 1rem auto 0;
  width: 130px;
}
.rule::before, .rule::after {
  content: "";
  height: 2px;
  flex: 1;
  background: linear-gradient(90deg, transparent, var(--orange));
}
.rule::after { background: linear-gradient(270deg, transparent, var(--green)); }
.rule i { color: var(--maroon); font-size: .8rem; }

/* ---------------------------------------------------------------- Buttons */
.btn {
  --btn-bg: var(--grad-brand);
  --btn-fg: #fff;
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .6rem;
  font-family: var(--f-body);
  font-size: .93rem;
  font-weight: 600;
  letter-spacing: .01em;
  line-height: 1;
  padding: .95rem 1.7rem;
  border: 0;
  border-radius: var(--r-pill);
  background: var(--btn-bg);
  color: var(--btn-fg);
  cursor: pointer;
  overflow: hidden;
  isolation: isolate;
  transition: transform .35s var(--ease), box-shadow .35s var(--ease), color .3s var(--ease);
  box-shadow: var(--sh-brand);
  text-align: center;
}
.btn::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(255,255,255,.28), rgba(255,255,255,0) 55%);
  opacity: 0;
  transition: opacity .35s var(--ease);
  z-index: -1;
}
.btn:hover { transform: translateY(-3px); box-shadow: 0 26px 46px -18px rgba(74,20,43,.55); color: #fff; }
.btn:hover::after { opacity: 1; }
.btn:active { transform: translateY(-1px); }
.btn i { font-size: .95em; }

.btn--leaf { --btn-bg: var(--grad-leaf); box-shadow: 0 18px 40px -16px rgba(23,138,168,.5); }
.btn--leaf:hover { box-shadow: 0 26px 46px -18px rgba(23,138,168,.6); }
.btn--accent { --btn-bg: var(--grad-accent); box-shadow: 0 18px 40px -16px rgba(224,122,30,.5); }
.btn--accent:hover { box-shadow: 0 26px 46px -18px rgba(224,122,30,.6); }

.btn--ghost {
  --btn-bg: transparent;
  --btn-fg: var(--maroon);
  border: 1.5px solid rgba(74, 20, 43, .22);
  box-shadow: none;
  backdrop-filter: blur(8px);
  background: rgba(255, 255, 255, .55);
}
.btn--ghost:hover {
  color: var(--maroon);
  border-color: var(--maroon);
  background: #fff;
  box-shadow: var(--sh-md);
}
.btn--light {
  --btn-bg: rgba(255,255,255,.12);
  --btn-fg: #fff;
  border: 1.5px solid rgba(255, 255, 255, .3);
  box-shadow: none;
  backdrop-filter: blur(10px);
}
.btn--light:hover { background: rgba(255, 255, 255, .2); border-color: rgba(255,255,255,.6); }
.btn--white { --btn-bg: #fff; --btn-fg: var(--maroon); box-shadow: var(--sh-lg); }
.btn--white:hover { color: var(--maroon); }

.btn--sm { padding: .68rem 1.25rem; font-size: .84rem; }
.btn--lg { padding: 1.08rem 2.1rem; font-size: 1rem; }
.btn--block { width: 100%; }

/* Ripple */
.ripple {
  position: absolute;
  border-radius: 50%;
  transform: scale(0);
  background: rgba(255, 255, 255, .45);
  animation: ripple .65s var(--ease-io) forwards;
  pointer-events: none;
  z-index: 0;
}
.btn--ghost .ripple, .btn--white .ripple { background: rgba(74, 20, 43, .16); }
@keyframes ripple { to { transform: scale(2.6); opacity: 0; } }

/* Text link with arrow */
.tlink {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  font-weight: 600;
  font-size: .9rem;
  color: var(--maroon);
}
.tlink i { transition: transform .35s var(--ease); font-size: .85em; }
.tlink:hover i { transform: translateX(5px); }

/* ---------------------------------------------------------------- Cards */
.card-s {
  position: relative;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  box-shadow: var(--sh-sm);
  transition: transform .5s var(--ease), box-shadow .5s var(--ease), border-color .5s var(--ease);
  overflow: hidden;
  height: 100%;
}
.card-s:hover {
  transform: translateY(-8px);
  box-shadow: var(--sh-lg);
  border-color: rgba(74, 20, 43, .14);
}

.glass {
  background: rgba(255, 255, 255, .62);
  backdrop-filter: blur(18px) saturate(160%);
  -webkit-backdrop-filter: blur(18px) saturate(160%);
  border: 1px solid rgba(255, 255, 255, .7);
  box-shadow: var(--sh-md);
}
.glass--dark {
  background: rgba(255, 255, 255, .07);
  backdrop-filter: blur(18px) saturate(150%);
  -webkit-backdrop-filter: blur(18px) saturate(150%);
  border: 1px solid rgba(255, 255, 255, .14);
}

/* ---------------------------------------------------------------- Badges */
.chip {
  display: inline-flex;
  align-items: center;
  gap: .38rem;
  font-size: .68rem;
  font-weight: 600;
  letter-spacing: .09em;
  text-transform: uppercase;
  padding: .34rem .78rem;
  border-radius: var(--r-pill);
  background: var(--maroon-050);
  color: var(--maroon-500);
  border: 1px solid rgba(74, 20, 43, .10);
}
.chip--green { background: var(--green-050); color: var(--green); border-color: rgba(26,106,74,.12); }
.chip--orange { background: var(--orange-050); color: #b45f10; border-color: rgba(224,122,30,.16); }
.chip--blue { background: var(--blue-050); color: #10708a; border-color: rgba(23,138,168,.14); }
.chip--solid { background: var(--grad-accent); color: #fff; border-color: transparent; }

/* Star rating */
.stars { display: inline-flex; gap: .1rem; color: var(--orange-400); font-size: .78rem; }
.stars + .rating-n { font-size: .78rem; color: var(--muted-2); margin-left: .4rem; font-weight: 500; }

/* ---------------------------------------------------------------- Decorations */
.blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(70px);
  opacity: .5;
  pointer-events: none;
  z-index: 0;
}
.blob--maroon { background: rgba(122, 37, 68, .28); }
.blob--green { background: rgba(26, 106, 74, .22); }
.blob--orange { background: rgba(224, 122, 30, .24); }
.blob--blue { background: rgba(23, 138, 168, .22); }

.sec > .shell { position: relative; z-index: 2; }

/* Wave divider */
.wave {
  position: absolute;
  left: 0;
  width: 100%;
  line-height: 0;
  pointer-events: none;
  z-index: 3;
}
.wave--top { top: -1px; }
.wave--bottom { bottom: -1px; }
.wave svg { display: block; width: 100%; height: clamp(40px, 6vw, 84px); }

/* Floating leaves layer */
.leaf-layer {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
  z-index: 19;
}
.leaf-layer svg {
  position: absolute;
  opacity: .5;
  will-change: transform;
  animation: drift linear infinite;
}
@keyframes drift {
  0%   { transform: translate3d(0, 0, 0) rotate(0deg); }
  50%  { transform: translate3d(18px, -26px, 0) rotate(140deg); }
  100% { transform: translate3d(0, 0, 0) rotate(360deg); }
}

@keyframes floaty {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-14px); }
}
.float { animation: floaty 6s ease-in-out infinite; }
.float--slow { animation-duration: 9s; }
.float--delay { animation-delay: -3s; }

/* ---------------------------------------------------------------- Loader */
#loader {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: grid;
  place-items: center;
  background: var(--grad-warm);
  transition: opacity .6s var(--ease), visibility .6s;
}
#loader.is-done { opacity: 0; visibility: hidden; }
.loader-box { display: grid; justify-items: center; gap: 1.4rem; }
.loader-mark {
  width: 108px;
  height: 108px;
  display: grid;
  place-items: center;
  position: relative;
}
.loader-mark img { width: 84px; animation: pulse 1.9s var(--ease) infinite; }
.loader-mark::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 2.5px solid transparent;
  border-top-color: var(--maroon);
  border-right-color: var(--orange);
  border-bottom-color: var(--green);
  animation: spin 1.1s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes pulse { 0%,100% { transform: scale(1); opacity: 1; } 50% { transform: scale(.9); opacity: .75; } }
.loader-word {
  font-family: var(--f-display);
  font-size: 1.02rem;
  letter-spacing: .34em;
  text-transform: uppercase;
  color: var(--maroon);
}
.loader-bar { width: 190px; height: 3px; border-radius: 3px; background: rgba(74,20,43,.13); overflow: hidden; }
.loader-bar span {
  display: block;
  height: 100%;
  width: 40%;
  border-radius: 3px;
  background: var(--grad-brand);
  animation: slide 1.25s var(--ease-io) infinite;
}
@keyframes slide { 0% { transform: translateX(-100%); } 100% { transform: translateX(340%); } }

/* ---------------------------------------------------------------- Progress + cursor */
#scroll-bar {
  position: fixed;
  top: 0; left: 0;
  height: 3px;
  width: 0%;
  background: var(--grad-text);
  z-index: 2000;
  transition: width .1s linear;
}

#cursor-glow {
  position: fixed;
  top: 0; left: 0;
  width: 400px;
  height: 400px;
  margin: -200px 0 0 -200px;
  border-radius: 50%;
  pointer-events: none;
  z-index: 1;
  opacity: 0;
  background: radial-gradient(circle, rgba(224,122,30,.13), rgba(74,20,43,.06) 45%, transparent 68%);
  transition: opacity .4s var(--ease);
  will-change: transform;
}
@media (hover: hover) and (pointer: fine) { #cursor-glow.on { opacity: 1; } }

/* Back to top */
#to-top {
  position: fixed;
  right: clamp(1rem, 2.5vw, 2rem);
  bottom: clamp(1rem, 2.5vw, 2rem);
  z-index: 1200;
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  border: 0;
  border-radius: 50%;
  background: var(--grad-brand);
  color: #fff;
  box-shadow: var(--sh-brand);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(14px) scale(.85);
  transition: all .4s var(--ease);
}
#to-top.on { opacity: 1; visibility: visible; transform: none; }
#to-top:hover { transform: translateY(-4px) scale(1.06); }

/* ---------------------------------------------------------------- Utilities */
.u-center { text-align: center; }
.u-mb0 { margin-bottom: 0 !important; }
.u-rel { position: relative; z-index: 2; }
.u-clip { overflow: hidden; }

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

.grid {
  display: grid;
  gap: clamp(1.1rem, 2.2vw, 1.75rem);
}
.grid--2 { grid-template-columns: repeat(auto-fit, minmax(min(300px, 100%), 1fr)); }
.grid--3 { grid-template-columns: repeat(auto-fill, minmax(min(290px, 100%), 1fr)); }
.grid--4 { grid-template-columns: repeat(auto-fill, minmax(min(230px, 100%), 1fr)); }
.grid--books { grid-template-columns: repeat(2, minmax(0, 1fr)); }
@media (min-width: 576px) {
  .grid--books { grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); }
}
@media (min-width: 992px) {
  .grid--books { grid-template-columns: repeat(auto-fill, minmax(215px, 1fr)); }
}

/* Skeleton shimmer for lazy images */
.ph {
  background: linear-gradient(100deg, #f2efec 30%, #faf8f6 50%, #f2efec 70%);
  background-size: 220% 100%;
  animation: shimmer 1.4s linear infinite;
}
@keyframes shimmer { to { background-position: -220% 0; } }
img.lazy-img { opacity: 0; transition: opacity .7s var(--ease); }
img.lazy-img.is-in { opacity: 1; }

/* Source catalogue authors without a supplied portrait retain the existing card layout. */
.author-fallback { display:grid; place-items:center; width:100%; aspect-ratio:1; background:linear-gradient(135deg,var(--maroon),var(--gold)); color:#fff; font-family:var(--font-display); font-size:4rem; font-weight:700; }

/* AOS fallback: keep content visible if AOS fails */
.no-aos [data-aos] { opacity: 1 !important; transform: none !important; }