@import url('https://fonts.googleapis.com/css2?family=Fraunces:ital,opsz,wght@0,9..144,300..900;1,9..144,300..900&family=IBM+Plex+Mono:wght@400;500&family=Karla:ital,wght@0,300..800;1,300..700&display=swap');

/* ==========================================================
   RUANG SUNYI — sistem visual
   Paper & ink. Grid kaku, tipografi besar, aksen vermilion.
   ========================================================== */

:root {
  --paper: #f2ede3;
  --paper-2: #e9e2d3;
  --paper-3: #ded5c2;
  --ink: #17140f;
  --ink-2: #4b4437;
  --ink-3: #7d7462;
  --vermilion: #c9351b;
  --olive: #4c5b33;
  --mustard: #e3a72f;
  --navy: #22324f;

  --line: rgba(23, 20, 15, 0.16);
  --line-2: rgba(23, 20, 15, 0.35);

  --f-display: 'Fraunces', 'Iowan Old Style', Georgia, 'Times New Roman', serif;
  --f-body: 'Karla', ui-sans-serif, system-ui, 'Segoe UI', sans-serif;
  --f-mono: 'IBM Plex Mono', ui-monospace, 'Cascadia Mono', Consolas, monospace;

  --wrap: 1260px;
  --gut: clamp(18px, 4vw, 56px);
  --hard: 5px 5px 0 var(--ink);
  --hard-sm: 3px 3px 0 var(--ink);
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--f-body);
  font-size: 17px;
  line-height: 1.62;
  font-variant-ligatures: common-ligatures;
  overflow-x: hidden;
}

/* butiran kertas */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  z-index: 900;
  pointer-events: none;
  opacity: 0.45;
  mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)' opacity='.32'/%3E%3C/svg%3E");
}

img { max-width: 100%; display: block; }
a { color: inherit; }
button { font: inherit; color: inherit; }

h1, h2, h3, h4 {
  font-family: var(--f-display);
  font-weight: 600;
  line-height: 0.98;
  letter-spacing: -0.02em;
  margin: 0;
  font-variation-settings: 'SOFT' 0, 'WONK' 1;
}

p { margin: 0 0 1em; }
p:last-child { margin-bottom: 0; }

::selection { background: var(--vermilion); color: var(--paper); }

:focus-visible { outline: 2px solid var(--vermilion); outline-offset: 3px; }

/* ---------- layout ---------- */
.wrap { width: 100%; max-width: var(--wrap); margin-inline: auto; padding-inline: var(--gut); }
.wrap--narrow { max-width: 880px; }
.rule { height: 1px; background: var(--line); border: 0; margin: 0; }
.rule--ink { background: var(--ink); height: 2px; }
.stack > * + * { margin-top: var(--s, 16px); }

.kicker {
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-2);
  display: inline-flex;
  align-items: center;
  gap: 9px;
}
.kicker::before {
  content: '';
  width: 22px;
  height: 1px;
  background: var(--vermilion);
}
.kicker--plain::before { display: none; }

.sect { padding-block: clamp(56px, 8vw, 118px); }
.sect-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
  border-bottom: 2px solid var(--ink);
  padding-bottom: 14px;
  margin-bottom: clamp(28px, 4vw, 52px);
}
.sect-head h2 { font-size: clamp(30px, 5vw, 54px); }
.sect-head .kicker { margin-bottom: 10px; display: flex; }

.serif-it { font-style: italic; font-variation-settings: 'SOFT' 40, 'WONK' 1; }
.mono { font-family: var(--f-mono); }
.muted { color: var(--ink-2); }
.small { font-size: 14px; }
.tiny { font-family: var(--f-mono); font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; }
.center { text-align: center; }

/* ---------- tombol ---------- */
.btn {
  --bg: var(--ink);
  --fg: var(--paper);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 26px;
  background: var(--bg);
  color: var(--fg);
  border: 2px solid var(--ink);
  border-radius: 0;
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  text-decoration: none;
  cursor: pointer;
  box-shadow: var(--hard-sm);
  transition: transform 0.12s ease, box-shadow 0.12s ease, background 0.15s ease;
}
.btn:hover { transform: translate(-2px, -2px); box-shadow: 6px 6px 0 var(--ink); }
.btn:active { transform: translate(2px, 2px); box-shadow: 0 0 0 var(--ink); }
.btn--red { --bg: var(--vermilion); --fg: #fff; }
.btn--ghost { --bg: transparent; --fg: var(--ink); box-shadow: none; }
.btn--ghost:hover { --bg: var(--ink); --fg: var(--paper); box-shadow: var(--hard-sm); }
.btn--block { width: 100%; }
.btn--lg { padding: 18px 34px; font-size: 13px; }
.btn--sm { padding: 9px 16px; font-size: 11px; }
.btn[disabled] { opacity: 0.45; pointer-events: none; }

.link-u {
  text-decoration: none;
  background-image: linear-gradient(var(--vermilion), var(--vermilion));
  background-size: 0% 2px;
  background-repeat: no-repeat;
  background-position: 0 100%;
  transition: background-size 0.25s ease;
  padding-bottom: 2px;
}
.link-u:hover { background-size: 100% 2px; }

.tag {
  display: inline-block;
  font-family: var(--f-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 4px 9px;
  border: 1px solid var(--ink);
  background: var(--paper);
}
.tag--red { background: var(--vermilion); color: #fff; border-color: var(--vermilion); }
.tag--mustard { background: var(--mustard); border-color: var(--ink); }
.tag--olive { background: var(--olive); color: #fff; border-color: var(--olive); }

/* ---------- header ---------- */
.topbar {
  background: var(--ink);
  color: var(--paper);
  overflow: hidden;
  border-bottom: 1px solid var(--ink);
}
.topbar__track {
  display: flex;
  width: max-content;
  animation: slide 42s linear infinite;
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  padding-block: 8px;
}
.topbar__track span { padding-inline: 22px; white-space: nowrap; }
.topbar__track span::after { content: '✳'; margin-left: 22px; color: var(--mustard); }
@keyframes slide { to { transform: translateX(-50%); } }
@media (prefers-reduced-motion: reduce) { .topbar__track { animation: none; } }

.site-head {
  position: sticky;
  top: 0;
  z-index: 500;
  background: var(--paper);
  border-bottom: 1px solid var(--ink);
}
.site-head__in {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 74px;
}
.brand { display: inline-flex; align-items: baseline; gap: 8px; text-decoration: none; }
.brand__mark {
  font-family: var(--f-display);
  font-size: 27px;
  letter-spacing: -0.03em;
}
.brand__mark em { font-style: italic; font-weight: 300; }
.brand__mark b { font-weight: 700; }
.brand__dot { width: 7px; height: 7px; background: var(--vermilion); border-radius: 50%; display: inline-block; }
.brand__sub {
  font-family: var(--f-mono);
  font-size: 9px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-3);
}

.nav { display: flex; align-items: center; gap: clamp(14px, 2vw, 30px); }
.nav a {
  font-family: var(--f-mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  text-decoration: none;
  padding: 6px 0;
  position: relative;
}
.nav a::after {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 2px;
  background: var(--vermilion);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.22s ease;
}
.nav a:hover::after, .nav a[aria-current='page']::after { transform: scaleX(1); }
.nav a[aria-current='page'] { color: var(--vermilion); }

.head-actions { display: flex; align-items: center; gap: 12px; }
.cart-btn {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  border: 2px solid var(--ink);
  background: var(--paper);
  padding: 9px 15px;
  text-decoration: none;
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  box-shadow: var(--hard-sm);
  transition: transform 0.12s ease;
}
.cart-btn:hover { transform: translate(-1px, -1px); }
.cart-btn__n {
  min-width: 20px;
  height: 20px;
  display: grid;
  place-items: center;
  background: var(--vermilion);
  color: #fff;
  border-radius: 50%;
  font-size: 10px;
  padding-inline: 5px;
}
.cart-btn__n[data-empty='1'] { background: var(--ink-3); }

.burger { display: none; background: none; border: 2px solid var(--ink); padding: 9px 12px; cursor: pointer; }
.burger span { display: block; width: 18px; height: 2px; background: var(--ink); }
.burger span + span { margin-top: 4px; }

@media (max-width: 900px) {
  .nav {
    position: fixed;
    inset: 0 0 auto 0;
    top: 74px;
    flex-direction: column;
    align-items: flex-start;
    background: var(--paper);
    border-bottom: 2px solid var(--ink);
    padding: 22px var(--gut) 30px;
    gap: 4px;
    transform: translateY(-120%);
    transition: transform 0.3s cubic-bezier(0.2, 0.8, 0.2, 1);
    z-index: 480;
  }
  .nav[data-open='1'] { transform: none; }
  .nav a { font-size: 18px; font-family: var(--f-display); letter-spacing: 0; text-transform: none; padding: 10px 0; }
  .burger { display: block; }
  .cart-btn span.lbl { display: none; }
  .brand__sub { display: none; }
  .brand__mark { font-size: 23px; }
  .site-head__in { gap: 12px; }
}

/* ---------- sampul buku (CSS, tanpa gambar) ---------- */
.cover {
  position: relative;
  container-type: inline-size;
  aspect-ratio: 2 / 3;
  background: var(--cbg, var(--navy));
  color: var(--cink, #f2ede3);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 10% 9%;
  box-shadow: 0 1px 0 rgba(0,0,0,.3), var(--cover-shadow, 10px 12px 0 rgba(23,20,15,.14));
  isolation: isolate;
}
.cover::before { /* punggung buku */
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 7%;
  background: linear-gradient(90deg, rgba(0,0,0,.34), rgba(0,0,0,.06) 60%, rgba(255,255,255,.07));
  z-index: 2;
}
.cover > * { position: relative; z-index: 3; }
.cover > .cover__pat { position: absolute; inset: 0; z-index: 0; opacity: 0.5; }
.cover__kick {
  font-family: var(--f-mono);
  font-size: 9px;
  font-size: 3.1cqw;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  opacity: 0.75;
}
.cover__mid { margin-top: auto; }
.cover__title {
  font-family: var(--f-display);
  font-weight: 700;
  font-size: 26px;
  font-size: 11cqw;
  line-height: 1;
  letter-spacing: -0.025em;
  color: inherit;
  text-wrap: balance;
}
.cover__bar { width: 34%; height: 3px; background: var(--cacc, #e3a72f); margin: 9% 0 6%; }
.cover__auth {
  font-family: var(--f-mono);
  font-size: 10px;
  font-size: 3.4cqw;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  opacity: 0.9;
}
.cover__foot {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  font-family: var(--f-mono);
  font-size: 9px;
  font-size: 2.9cqw;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  opacity: 0.7;
}
.cover--sm { padding: 11% 9%; }
.cover--sm .cover__kick, .cover--sm .cover__foot { display: none; }
.cover--sm .cover__auth { display: none; }
.cover--sm .cover__bar { margin-bottom: 0; }

.cover[data-pattern='arc'] .cover__pat {
  background:
    radial-gradient(circle at 50% 118%, transparent 27%, var(--cacc) 27.5%, var(--cacc) 30%, transparent 30.5%),
    radial-gradient(circle at 50% 118%, transparent 44%, var(--cacc) 44.5%, var(--cacc) 47%, transparent 47.5%),
    radial-gradient(circle at 50% 118%, transparent 61%, var(--cacc) 61.5%, var(--cacc) 64%, transparent 64.5%);
}
.cover[data-pattern='wave'] .cover__pat {
  background-image: repeating-radial-gradient(circle at 100% 0, transparent 0 16px, var(--cacc) 16px 18px);
  opacity: 0.28;
}
.cover[data-pattern='grid'] .cover__pat {
  background-image:
    repeating-linear-gradient(90deg, var(--cacc) 0 1px, transparent 1px 26px),
    repeating-linear-gradient(0deg, var(--cacc) 0 1px, transparent 1px 26px);
  opacity: 0.3;
}
.cover[data-pattern='stripe'] .cover__pat {
  background-image: repeating-linear-gradient(-40deg, var(--cacc) 0 3px, transparent 3px 17px);
  opacity: 0.35;
}
.cover[data-pattern='dot'] .cover__pat {
  background-image: radial-gradient(var(--cacc) 1.6px, transparent 1.7px);
  background-size: 15px 15px;
  opacity: 0.42;
}
.cover[data-pattern='ray'] .cover__pat {
  background: repeating-conic-gradient(from 0deg at 50% 100%, var(--cacc) 0deg 7deg, transparent 7deg 20deg);
  opacity: 0.22;
}
.cover[data-pattern='blocks'] .cover__pat {
  background-image:
    linear-gradient(var(--cacc), var(--cacc)),
    linear-gradient(var(--cacc), var(--cacc));
  background-size: 44% 22%, 26% 40%;
  background-position: 88% 12%, 8% 86%;
  background-repeat: no-repeat;
  opacity: 0.5;
}
.cover[data-pattern='frame'] .cover__pat {
  background: transparent;
  border: 2px solid var(--cacc);
  inset: 7%;
  opacity: 0.55;
}

/* segel PDF */
.seal {
  width: 108px;
  height: 108px;
  display: grid;
  place-items: center;
  text-align: center;
  border: 2px dashed var(--ink);
  border-radius: 50%;
  background: var(--mustard);
  font-family: var(--f-mono);
  font-size: 9.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  line-height: 1.5;
  transform: rotate(-11deg);
}
.seal b { display: block; font-size: 19px; letter-spacing: 0.06em; font-family: var(--f-display); }

/* ---------- hero ---------- */
.hero { position: relative; padding-top: clamp(40px, 6vw, 78px); padding-bottom: clamp(30px, 5vw, 60px); }
.hero__grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: clamp(28px, 5vw, 70px);
  align-items: center;
}
.hero h1 {
  font-size: clamp(44px, 8.2vw, 108px);
  line-height: 0.9;
  letter-spacing: -0.045em;
  margin: 22px 0 26px;
  text-wrap: balance;
}
.hero h1 em {
  font-style: italic;
  font-weight: 300;
  font-variation-settings: 'SOFT' 60, 'WONK' 1;
  color: var(--vermilion);
}
.hero__lead { font-size: clamp(16px, 1.5vw, 19px); max-width: 46ch; color: var(--ink-2); }
.hero__cta { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 30px; }
.hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 28px;
  margin-top: 38px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
}
.hero__meta div strong { font-family: var(--f-display); font-size: 27px; display: block; line-height: 1; }
.hero__meta div span { font-family: var(--f-mono); font-size: 10px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--ink-3); }

.hero__stage { position: relative; }
.hero__stage .cover { width: 100%; }
.hero__stage .stage-a { width: 70%; transform: rotate(-5deg); position: relative; z-index: 3; }
.hero__stage .stage-b {
  position: absolute;
  right: 0; top: 4%;
  width: 50%;
  transform: rotate(7deg);
  z-index: 2;
}
.hero__stage .stage-c {
  position: absolute;
  left: 16%; bottom: -12%;
  width: 38%;
  transform: rotate(2deg);
  z-index: 1;
  opacity: 0.94;
}
.hero__stage .seal { position: absolute; left: -9%; bottom: -2%; z-index: 5; }
.hero__note {
  position: absolute;
  right: 2%;
  bottom: -6%;
  font-family: var(--f-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-3);
  max-width: 150px;
  text-align: right;
  z-index: 6;
}

@media (max-width: 900px) {
  .hero__grid { grid-template-columns: 1fr; }
  .hero__stage { max-width: 420px; margin: 40px auto 60px; }
  .hero__note { display: none; }
}

/* ---------- daftar indeks buku ---------- */
.index-list { border-top: 2px solid var(--ink); }
.idx {
  display: grid;
  grid-template-columns: 62px 1fr auto auto;
  align-items: center;
  gap: 20px;
  padding: 20px 6px;
  border-bottom: 1px solid var(--line);
  text-decoration: none;
  position: relative;
  transition: background 0.2s ease, padding 0.2s ease;
}
.idx:hover { background: var(--paper-2); padding-left: 18px; }
.idx__no { font-family: var(--f-mono); font-size: 12px; color: var(--ink-3); letter-spacing: 0.1em; }
.idx__t { display: inline-block; font-family: var(--f-display); font-size: clamp(20px, 2.6vw, 33px); line-height: 1.05; letter-spacing: -0.025em; }
.idx__s { display: block; font-size: 14px; color: var(--ink-2); margin-top: 3px; }
.idx__cat { font-family: var(--f-mono); font-size: 10px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--ink-3); }
.idx__p { font-family: var(--f-mono); font-size: 14px; white-space: nowrap; }
.idx__p s { color: var(--ink-3); font-size: 11px; display: block; text-align: right; }
.idx__badge { position: absolute; top: 50%; left: 0; transform: translateY(-50%); }
@media (max-width: 760px) {
  .idx { grid-template-columns: 40px 1fr; gap: 12px; }
  .idx__cat { grid-column: 2; }
  .idx__p { grid-column: 2; text-align: left; }
  .idx__p s { text-align: left; display: inline; margin-left: 8px; }
}

/* pratinjau sampul mengambang */
.hover-cover {
  position: fixed;
  width: 190px;
  z-index: 700;
  pointer-events: none;
  opacity: 0;
  transform: translate(-50%, -50%) rotate(-4deg) scale(0.9);
  transition: opacity 0.18s ease, transform 0.18s ease;
}
.hover-cover[data-on='1'] { opacity: 1; transform: translate(-50%, -50%) rotate(-4deg) scale(1); }
@media (max-width: 900px) { .hover-cover { display: none; } }

/* ---------- grid kartu buku ---------- */
.books-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(215px, 1fr));
  gap: clamp(22px, 3vw, 40px) clamp(18px, 2.4vw, 32px);
}
.bcard { text-decoration: none; display: block; position: relative; }
.bcard .cover { transition: transform 0.28s cubic-bezier(.2,.8,.2,1), box-shadow 0.28s ease; }
.bcard:hover .cover { transform: translate(-5px, -7px) rotate(-1.2deg); box-shadow: 14px 16px 0 rgba(23,20,15,.16); }
.bcard__body { margin-top: 16px; }
.bcard__t { font-family: var(--f-display); font-size: 20px; line-height: 1.08; letter-spacing: -0.02em; }
.bcard__m { font-family: var(--f-mono); font-size: 10.5px; letter-spacing: 0.13em; text-transform: uppercase; color: var(--ink-3); margin-top: 7px; }
.bcard__p { display: flex; align-items: baseline; gap: 9px; margin-top: 9px; font-family: var(--f-mono); font-size: 14px; }
.bcard__p s { color: var(--ink-3); font-size: 11.5px; }
.bcard__badge { position: absolute; top: 10px; right: -6px; z-index: 5; }

/* ---------- manifes / spesifikasi ---------- */
.specs { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 2px solid var(--ink); }
.specs > div { padding: 34px 30px 40px; border-bottom: 2px solid var(--ink); }
.specs > div + div { border-left: 1px solid var(--line); }
.specs__n { font-family: var(--f-display); font-size: 58px; line-height: 1; color: transparent; -webkit-text-stroke: 1.4px var(--ink); }
.specs h3 { font-size: 24px; margin: 16px 0 10px; }
.specs p { font-size: 15px; color: var(--ink-2); }
@media (max-width: 820px) {
  .specs { grid-template-columns: 1fr; }
  .specs > div + div { border-left: 0; }
}

/* ---------- penulis ---------- */
.author-strip { display: grid; grid-template-columns: 0.85fr 1.15fr; gap: clamp(28px, 5vw, 66px); align-items: center; }
.portrait {
  position: relative;
  aspect-ratio: 4 / 5;
  background:
    radial-gradient(circle at 50% 38%, var(--paper-3) 0 30%, transparent 31%),
    repeating-linear-gradient(0deg, rgba(23,20,15,.16) 0 1px, transparent 1px 6px),
    var(--paper-2);
  border: 2px solid var(--ink);
  display: grid;
  place-items: center;
  box-shadow: var(--hard);
}
.portrait__ini {
  font-family: var(--f-display);
  font-size: clamp(66px, 11vw, 130px);
  font-style: italic;
  letter-spacing: -0.04em;
  color: var(--ink);
  mix-blend-mode: multiply;
}
.portrait__cap {
  position: absolute;
  bottom: -14px; left: 50%;
  transform: translateX(-50%);
  background: var(--vermilion);
  color: #fff;
  font-family: var(--f-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  padding: 6px 14px;
  white-space: nowrap;
}
.sig {
  font-family: var(--f-display);
  font-style: italic;
  font-size: 34px;
  transform: rotate(-3deg);
  display: inline-block;
  margin-top: 18px;
  color: var(--vermilion);
}
@media (max-width: 820px) { .author-strip { grid-template-columns: 1fr; } }

/* ---------- testimoni ---------- */
.notes { display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(22px, 3vw, 38px); }
.note {
  position: relative;
  background: var(--paper-2);
  border: 1px solid var(--line-2);
  padding: 34px 28px 26px;
  transform: rotate(var(--rot, 0deg));
  box-shadow: 6px 8px 0 rgba(23,20,15,.09);
}
.note::before { /* selotip */
  content: '';
  position: absolute;
  top: -12px; left: 50%;
  transform: translateX(-50%) rotate(-2deg);
  width: 92px; height: 24px;
  background: rgba(227, 167, 47, 0.55);
  border-left: 1px dashed rgba(23,20,15,.2);
  border-right: 1px dashed rgba(23,20,15,.2);
}
.note p { font-family: var(--f-display); font-size: 18px; line-height: 1.42; letter-spacing: -0.01em; }
.note footer { margin-top: 20px; border-top: 1px solid var(--line); padding-top: 12px; }
.note footer b { font-size: 14px; }
.note footer span { display: block; font-family: var(--f-mono); font-size: 10px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-3); }
@media (max-width: 880px) { .notes { grid-template-columns: 1fr; } }

/* ---------- faq ---------- */
.faq details { border-bottom: 1px solid var(--line); }
.faq details:first-of-type { border-top: 2px solid var(--ink); }
.faq summary {
  list-style: none;
  cursor: pointer;
  padding: 22px 44px 22px 0;
  font-family: var(--f-display);
  font-size: clamp(19px, 2.2vw, 25px);
  letter-spacing: -0.02em;
  position: relative;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: '+';
  position: absolute;
  right: 4px; top: 50%;
  transform: translateY(-50%);
  font-family: var(--f-mono);
  font-size: 22px;
  color: var(--vermilion);
}
.faq details[open] summary::after { content: '–'; }
.faq p { padding: 0 12% 26px 0; color: var(--ink-2); }

/* ---------- CTA gelap ---------- */
.dark {
  background: var(--ink);
  color: var(--paper);
  padding-block: clamp(50px, 7vw, 96px);
}
.dark h2 { color: var(--paper); }
.dark .kicker { color: var(--paper-3); }
.dark .btn { --bg: var(--mustard); --fg: var(--ink); border-color: var(--mustard); box-shadow: 3px 3px 0 var(--vermilion); }
.dark .btn:hover { box-shadow: 6px 6px 0 var(--vermilion); }
.dark .btn--ghost { --bg: transparent; --fg: var(--paper); border-color: var(--paper-3); box-shadow: none; }
.dark .btn--ghost:hover { --bg: var(--paper); --fg: var(--ink); border-color: var(--paper); box-shadow: 3px 3px 0 var(--vermilion); }
.newsletter { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 26px; }
.newsletter input {
  flex: 1 1 260px;
  background: transparent;
  border: 2px solid var(--paper-3);
  color: var(--paper);
  padding: 14px 16px;
  font-family: var(--f-mono);
  font-size: 13px;
}
.newsletter input::placeholder { color: rgba(242,237,227,.45); }

/* ---------- footer ---------- */
.site-foot { border-top: 2px solid var(--ink); padding-block: 54px 30px; }
.foot-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 34px; }
.foot-grid h4 { font-family: var(--f-mono); font-size: 10px; letter-spacing: 0.18em; text-transform: uppercase; color: var(--ink-3); margin-bottom: 14px; font-weight: 500; }
.foot-grid ul { list-style: none; padding: 0; margin: 0; }
.foot-grid li + li { margin-top: 8px; }
.foot-grid a { text-decoration: none; font-size: 15px; }
.foot-grid a:hover { color: var(--vermilion); }
.foot-word {
  font-family: var(--f-display);
  font-size: clamp(58px, 15vw, 200px);
  line-height: 0.8;
  letter-spacing: -0.05em;
  color: transparent;
  -webkit-text-stroke: 1.2px rgba(23,20,15,.35);
  margin-top: 48px;
  user-select: none;
  overflow: hidden;
}
.colophon {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  flex-wrap: wrap;
  border-top: 1px solid var(--line);
  margin-top: 26px;
  padding-top: 18px;
  font-family: var(--f-mono);
  font-size: 10.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-3);
}
@media (max-width: 820px) { .foot-grid { grid-template-columns: 1fr 1fr; } }

/* ---------- halaman: judul ---------- */
.page-head { padding-block: clamp(34px, 5vw, 64px) clamp(24px, 3vw, 40px); }
.page-head h1 { font-size: clamp(38px, 7vw, 82px); letter-spacing: -0.04em; margin-top: 16px; }
.crumb { font-family: var(--f-mono); font-size: 10.5px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--ink-3); }
.crumb a { text-decoration: none; }
.crumb a:hover { color: var(--vermilion); }
.crumb span { margin-inline: 8px; }

/* ---------- filter katalog ---------- */
.filters {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  border-block: 1px solid var(--line);
  padding-block: 14px;
  margin-bottom: 40px;
  position: sticky;
  top: 74px;
  background: var(--paper);
  z-index: 300;
}
.chips { display: flex; gap: 8px; flex-wrap: wrap; }
.chip {
  border: 1px solid var(--line-2);
  background: transparent;
  padding: 8px 15px;
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all 0.15s ease;
}
.chip:hover { border-color: var(--ink); }
.chip[aria-pressed='true'] { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.search-box { display: flex; align-items: center; gap: 8px; border: 1px solid var(--line-2); padding: 7px 12px; }
.search-box input { border: 0; background: transparent; font-family: var(--f-mono); font-size: 12px; width: 150px; outline: none; }
.sortsel {
  border: 1px solid var(--line-2);
  background: transparent;
  padding: 8px 10px;
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
}
.empty { padding: 70px 0; text-align: center; }
.empty h3 { font-size: 30px; margin-bottom: 10px; }

/* ---------- detail buku ---------- */
.detail { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: clamp(30px, 5vw, 72px); align-items: start; }
.detail__left { position: sticky; top: 100px; }
.detail__left .cover { box-shadow: 16px 18px 0 rgba(23,20,15,.14); }
.buybox { border: 2px solid var(--ink); background: var(--paper-2); padding: 22px; margin-top: 28px; box-shadow: var(--hard); }
.price-row { display: flex; align-items: baseline; gap: 12px; margin-bottom: 4px; }
.price { font-family: var(--f-display); font-size: 40px; letter-spacing: -0.03em; line-height: 1; }
.price-row s { font-family: var(--f-mono); font-size: 14px; color: var(--ink-3); }
.detail h1 { font-size: clamp(34px, 5.6vw, 66px); letter-spacing: -0.04em; line-height: 0.94; margin: 14px 0 12px; }
.detail__sub { font-family: var(--f-display); font-style: italic; font-size: clamp(17px, 2vw, 22px); color: var(--ink-2); }
.starline { display: flex; align-items: center; gap: 10px; font-family: var(--f-mono); font-size: 12px; margin-top: 18px; }
.stars { color: var(--vermilion); letter-spacing: 2px; }
.specs-table { margin-top: 26px; }
.specs-table > div { display: flex; justify-content: space-between; gap: 20px; padding: 11px 0; border-bottom: 1px solid var(--line); font-size: 14px; }
.specs-table dt { font-family: var(--f-mono); font-size: 10px; letter-spacing: 0.15em; text-transform: uppercase; color: var(--ink-3); margin: 0; }
.specs-table dd { margin: 0; text-align: right; }

.tabs { display: flex; gap: 0; border-bottom: 2px solid var(--ink); margin-top: 44px; flex-wrap: wrap; }
.tabs button {
  background: transparent;
  border: 0;
  border-bottom: 3px solid transparent;
  margin-bottom: -2px;
  padding: 13px 20px 13px 0;
  margin-right: 24px;
  font-family: var(--f-mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  cursor: pointer;
  color: var(--ink-3);
}
.tabs button[aria-selected='true'] { color: var(--ink); border-bottom-color: var(--vermilion); }
.tabpanel { padding-top: 28px; font-size: 17px; }
.tabpanel[hidden] { display: none; }
.toc-list { list-style: none; padding: 0; margin: 0; counter-reset: toc; }
.toc-list li {
  display: flex;
  gap: 14px;
  align-items: baseline;
  padding: 12px 0;
  border-bottom: 1px dotted var(--line-2);
  font-family: var(--f-display);
  font-size: 19px;
  letter-spacing: -0.015em;
}
.toc-list li::before {
  counter-increment: toc;
  content: counter(toc, decimal-leading-zero);
  font-family: var(--f-mono);
  font-size: 11px;
  color: var(--vermilion);
}
.excerpt {
  background: #fbf8f1;
  border: 1px solid var(--line-2);
  padding: clamp(24px, 4vw, 46px);
  font-family: var(--f-display);
  font-size: 20px;
  line-height: 1.55;
  white-space: pre-line;
  box-shadow: inset 0 0 60px rgba(23,20,15,.05);
  position: relative;
}
.excerpt::after {
  content: 'cuplikan';
  position: absolute;
  top: 0; right: 0;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--f-mono);
  font-size: 9px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  padding: 5px 11px;
}
.review-item { border-bottom: 1px solid var(--line); padding: 20px 0; }
.review-item b { font-size: 15px; }
.review-item .stars { font-size: 12px; }
@media (max-width: 900px) {
  .detail { grid-template-columns: 1fr; }
  .detail__left { position: static; max-width: 340px; }
}

/* ---------- keranjang & checkout ---------- */
.cart-layout { display: grid; grid-template-columns: 1.35fr 0.65fr; gap: clamp(28px, 4vw, 58px); align-items: start; }
.cart-row {
  display: grid;
  grid-template-columns: 76px 1fr auto;
  gap: 20px;
  align-items: center;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}
.cart-row:first-child { border-top: 2px solid var(--ink); }
.cart-row h3 { font-size: 22px; letter-spacing: -0.02em; }
.cart-row .meta { font-family: var(--f-mono); font-size: 10.5px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink-3); margin-top: 6px; }
.cart-row .rm {
  background: none; border: 0; cursor: pointer;
  font-family: var(--f-mono); font-size: 10px; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--ink-3); text-decoration: underline; padding: 0; margin-top: 8px;
}
.cart-row .rm:hover { color: var(--vermilion); }
.cart-row .p { font-family: var(--f-mono); font-size: 15px; white-space: nowrap; text-align: right; }

.summary { border: 2px solid var(--ink); padding: 26px; background: var(--paper-2); box-shadow: var(--hard); position: sticky; top: 100px; }
.summary h3 { font-size: 24px; margin-bottom: 18px; }
.sum-line { display: flex; justify-content: space-between; gap: 14px; font-family: var(--f-mono); font-size: 13px; padding: 9px 0; }
.sum-line.total { border-top: 2px solid var(--ink); margin-top: 10px; padding-top: 14px; font-size: 15px; }
.sum-line.total b { font-family: var(--f-display); font-size: 30px; letter-spacing: -0.03em; }
.sum-line .disc { color: var(--olive); }
.voucher { display: flex; gap: 8px; margin: 16px 0 6px; }
.voucher input {
  flex: 1; border: 1px solid var(--line-2); background: var(--paper);
  padding: 11px 12px; font-family: var(--f-mono); font-size: 12px; text-transform: uppercase; outline: none;
}
.voucher input:focus { border-color: var(--ink); }
@media (max-width: 900px) {
  .cart-layout { grid-template-columns: 1fr; }
  .summary { position: static; }
}

/* langkah */
.steps { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; font-family: var(--f-mono); font-size: 10.5px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--ink-3); }
.steps b { color: var(--ink); }
.steps i { font-style: normal; color: var(--vermilion); }

/* form */
.field { margin-bottom: 20px; }
.field label { display: block; font-family: var(--f-mono); font-size: 10px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--ink-2); margin-bottom: 7px; }
.field input, .field textarea, .field select {
  width: 100%;
  border: 2px solid var(--ink);
  background: var(--paper);
  padding: 13px 14px;
  font-family: var(--f-body);
  font-size: 16px;
  outline: none;
}
.field input:focus, .field textarea:focus { box-shadow: var(--hard-sm); }
.field .hint { font-size: 12.5px; color: var(--ink-3); margin-top: 6px; }
.field-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
@media (max-width: 620px) { .field-2 { grid-template-columns: 1fr; } }

.pay-opt { display: block; border: 2px solid var(--line-2); padding: 16px 18px; cursor: pointer; margin-bottom: 12px; transition: all 0.15s ease; position: relative; }
.pay-opt:hover { border-color: var(--ink); }
.pay-opt input { position: absolute; opacity: 0; }
.pay-opt:has(input:checked) { border-color: var(--ink); background: var(--paper-2); box-shadow: var(--hard-sm); }
.pay-opt b { display: block; font-size: 16px; }
.pay-opt span { font-family: var(--f-mono); font-size: 11px; letter-spacing: 0.1em; color: var(--ink-3); text-transform: uppercase; }
.pay-opt .tag { position: absolute; right: 16px; top: 16px; }

/* ---------- sukses ---------- */
.receipt {
  border: 2px solid var(--ink);
  background: #fbf8f1;
  padding: clamp(24px, 4vw, 44px);
  box-shadow: var(--hard);
  position: relative;
}
.receipt::before {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: -1px;
  height: 10px;
  background: repeating-linear-gradient(-45deg, var(--ink) 0 8px, transparent 8px 16px);
  opacity: 0.25;
}
.receipt-line { display: flex; justify-content: space-between; gap: 16px; border-bottom: 1px dotted var(--line-2); padding: 12px 0; font-family: var(--f-mono); font-size: 13px; }
.dl-row { display: flex; align-items: center; justify-content: space-between; gap: 18px; flex-wrap: wrap; padding: 18px 0; border-bottom: 1px solid var(--line); }
.dl-row:first-of-type { border-top: 2px solid var(--ink); }
.big-check {
  width: 74px; height: 74px; border: 2px solid var(--ink); border-radius: 50%;
  display: grid; place-items: center; background: var(--olive); color: #fff;
  font-size: 34px; box-shadow: var(--hard-sm);
}

/* ---------- rak ---------- */
.shelf-row {
  display: grid;
  grid-template-columns: 72px 1fr auto;
  gap: 22px;
  align-items: center;
  padding: 24px 0;
  border-bottom: 1px solid var(--line);
}
.shelf-row:first-of-type { border-top: 2px solid var(--ink); }
.progress { height: 6px; background: var(--paper-3); margin-top: 12px; max-width: 320px; }
.progress i { display: block; height: 100%; background: var(--vermilion); }
@media (max-width: 700px) { .shelf-row { grid-template-columns: 56px 1fr; } .shelf-row .acts { grid-column: 2; } }

/* ---------- masuk ---------- */
.split { display: grid; grid-template-columns: 1fr 1fr; min-height: calc(100vh - 110px); }
.split__art {
  background: var(--ink);
  color: var(--paper);
  padding: clamp(34px, 5vw, 70px);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  overflow: hidden;
}
.split__art h2 { color: var(--paper); font-size: clamp(30px, 4vw, 52px); }
.split__art .cover { width: 200px; transform: rotate(-6deg); margin-top: 30px; }
.split__form { padding: clamp(34px, 5vw, 70px); display: flex; flex-direction: column; justify-content: center; }
@media (max-width: 880px) { .split { grid-template-columns: 1fr; min-height: 0; } .split__art { min-height: 300px; } }

/* ---------- timeline ---------- */
.tl { border-top: 2px solid var(--ink); }
.tl__row { display: grid; grid-template-columns: 110px 1fr; gap: 24px; padding: 24px 0; border-bottom: 1px solid var(--line); }
.tl__y { font-family: var(--f-mono); font-size: 13px; color: var(--vermilion); letter-spacing: 0.1em; }
.tl__row h3 { font-size: 24px; letter-spacing: -0.02em; }
.tl__row p { color: var(--ink-2); font-size: 15px; margin-top: 6px; }
@media (max-width: 620px) { .tl__row { grid-template-columns: 1fr; gap: 6px; } }

/* ---------- toast ---------- */
.toast-wrap { position: fixed; right: 22px; bottom: 22px; z-index: 950; display: flex; flex-direction: column; gap: 10px; align-items: flex-end; }
.toast {
  background: var(--ink);
  color: var(--paper);
  border: 2px solid var(--ink);
  padding: 13px 18px;
  font-family: var(--f-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  box-shadow: 5px 5px 0 var(--vermilion);
  max-width: 320px;
  animation: pop 0.25s cubic-bezier(.2,.9,.3,1.4);
}
@keyframes pop { from { transform: translateY(14px) scale(.94); opacity: 0; } }

/* ---------- modal ---------- */
.modal[hidden] { display: none; }
.modal {
  position: fixed;
  inset: 0;
  z-index: 940;
  background: rgba(23,20,15,.55);
  display: grid;
  place-items: center;
  padding: 20px;
}
.modal__box {
  background: var(--paper);
  border: 2px solid var(--ink);
  box-shadow: 10px 10px 0 var(--vermilion);
  max-width: 640px;
  width: 100%;
  max-height: 86vh;
  overflow: auto;
  padding: clamp(24px, 4vw, 44px);
  position: relative;
}
.modal__x {
  position: absolute; top: 12px; right: 14px;
  background: none; border: 0; cursor: pointer;
  font-family: var(--f-mono); font-size: 20px; line-height: 1;
}
.pdfpage {
  background: #fff;
  border: 1px solid var(--line-2);
  padding: 42px 38px;
  font-family: var(--f-display);
  font-size: 16.5px;
  line-height: 1.75;
  white-space: pre-line;
  box-shadow: 0 2px 0 rgba(23,20,15,.12);
}
.pdfpage .dropcap::first-letter {
  float: left;
  font-size: 62px;
  line-height: 0.82;
  padding: 4px 10px 0 0;
  font-weight: 700;
  color: var(--vermilion);
}
.pdfpage__no { text-align: center; font-family: var(--f-mono); font-size: 10px; color: var(--ink-3); margin-top: 26px; letter-spacing: 0.2em; }