@import url('https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,400;9..144,600;9..144,700&family=Plus+Jakarta+Sans:wght@400;500;600;700&family=IBM+Plex+Mono:wght@400;500&display=swap');

/* ============================================================
   Pustaka Nusantara — tema Omeka S
   Palet: hijau daun, biru laut, putih kertas
   ============================================================ */

:root {
  --hijau:        #0B7A4B;
  --hijau-terang: #16A46A;
  --hijau-kabut:  #E6F4EC;
  --biru:         #002266;
  --biru-terang:  #2E7DC2;
  --biru-kabut:   #E7F0F8;
  --putih:        #FFFFFF;
  --kertas:       #F5F8F7;
  --tinta:        #0C1F2E;
  --tinta-lembut: #4A6272;
  --garis:        #DCE6E2;

  --display: 'Fraunces', Georgia, serif;
  --body:    'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  --mono:    'IBM Plex Mono', ui-monospace, monospace;

  --r-s: 6px;
  --r-m: 14px;
  --r-l: 26px;

  --sisi: clamp(1.25rem, 5vw, 4.5rem);
  --bayang: 0 1px 2px rgba(12, 31, 46, .05), 0 12px 32px -12px rgba(18, 69, 126, .22);
}

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

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

body {
  margin: 0;
  font-family: var(--body);
  font-size: 1rem;
  line-height: 1.65;
  color: var(--tinta);
  background: var(--putih);
  -webkit-font-smoothing: antialiased;
}

a { color: var(--biru); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--hijau); }

:focus-visible {
  outline: 3px solid var(--hijau-terang);
  outline-offset: 2px;
  border-radius: var(--r-s);
}

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

h1, h2, h3, h4 {
  font-family: var(--display);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -.015em;
  margin: 0 0 .5em;
}
h1 { font-size: clamp(2.1rem, 5.2vw, 3.6rem); }
h2 { font-size: clamp(1.55rem, 3.2vw, 2.35rem); }
h3 { font-size: 1.25rem; }

.eyebrow {
  font-family: var(--mono);
  font-size: .72rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--hijau);
  margin: 0 0 .9rem;
}

.lewati {
  position: absolute; left: -9999px;
  background: var(--biru); color: #fff; padding: .75rem 1.25rem; z-index: 999;
}
.lewati:focus { left: 1rem; top: 1rem; }

/* ---------- Kepala situs ---------- */

.kepala {
  position: sticky; top: 0; z-index: 60;
  background: rgba(255, 255, 255, .92);
  backdrop-filter: saturate(1.4) blur(10px);
  border-bottom: 1px solid var(--garis);
}
.kepala__pita { height: 4px; background: linear-gradient(90deg, var(--hijau) 0 33%, var(--hijau-terang) 33% 55%, var(--biru-terang) 55% 78%, var(--biru) 78% 100%); }
.kepala__isi {
  display: flex; align-items: center; gap: 1.5rem;
  padding: .9rem var(--sisi);
}
.merek { display: flex; align-items: center; gap: .75rem; text-decoration: none; color: var(--tinta); }
.merek img { max-height: 46px; width: auto; }
.merek__nama { font-family: var(--display); font-weight: 700; font-size: 1.15rem; line-height: 1.1; }
.merek__sub { font-family: var(--mono); font-size: .68rem; letter-spacing: .12em; text-transform: uppercase; color: var(--tinta-lembut); }

.navigasi { margin-left: auto; }
.navigasi ul { display: flex; gap: .35rem; list-style: none; margin: 0; padding: 0; flex-wrap: wrap; }
.navigasi a {
  display: block; padding: .5rem .85rem; border-radius: 999px;
  font-weight: 500; font-size: .93rem; text-decoration: none; color: var(--tinta);
}
.navigasi a:hover, .navigasi li.active > a { background: var(--hijau-kabut); color: var(--hijau); }

.cari { display: flex; }
.cari input[type="text"], .cari input[type="search"] {
  border: 1px solid var(--garis); border-right: 0;
  border-radius: 999px 0 0 999px; padding: .55rem 1rem; min-width: 12rem;
  font: inherit; font-size: .9rem; background: var(--kertas);
}
.cari button {
  border: 0; border-radius: 0 999px 999px 0; padding: .55rem 1.1rem;
  background: var(--biru); color: #fff; font: inherit; font-weight: 600; cursor: pointer;
}
.cari button:hover { background: var(--hijau); }

.menu-tombol { display: none; }

/* ---------- Hero ---------- */

.hero {
  position: relative; overflow: hidden;
  padding: clamp(3.5rem, 9vw, 7rem) var(--sisi) clamp(3rem, 7vw, 5.5rem);
  background:
    radial-gradient(120% 90% at 85% 0%, rgba(46, 125, 194, .18), transparent 60%),
    radial-gradient(90% 80% at 0% 100%, rgba(22, 164, 106, .20), transparent 62%),
    var(--kertas);
}
.hero__grid { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr); gap: clamp(2rem, 5vw, 4rem); align-items: center; max-width: 1240px; margin: 0 auto; }
.hero__judul { max-width: 18ch; }
.hero__judul em { font-style: italic; color: var(--hijau); }
.hero__teks { font-size: 1.08rem; color: var(--tinta-lembut); max-width: 46ch; }
.hero__aksi { display: flex; gap: .75rem; flex-wrap: wrap; margin-top: 1.75rem; }

.tombol {
  display: inline-flex; align-items: center; gap: .5rem;
  padding: .8rem 1.5rem; border-radius: 999px; border: 1px solid transparent;
  font-weight: 600; font-size: .95rem; text-decoration: none; cursor: pointer;
  transition: transform .18s ease, background .18s ease;
}
.tombol--utama { background: var(--hijau); color: #fff; }
.tombol--utama:hover { background: var(--biru); color: #fff; transform: translateY(-2px); }
.tombol--garis { border-color: var(--biru); color: var(--biru); background: transparent; }
.tombol--garis:hover { background: var(--biru); color: #fff; }

/* Tanda khas: tumpukan punggung buku */
.rak { display: flex; gap: 6px; align-items: flex-end; height: clamp(220px, 34vw, 340px); }
.rak__punggung {
  flex: 1; border-radius: 4px 4px 2px 2px;
  background: linear-gradient(180deg, var(--biru) 0%, var(--hijau) 100%);
  box-shadow: inset -4px 0 8px rgba(0, 0, 0, .18), var(--bayang);
  position: relative;
  transition: height .45s cubic-bezier(.2, .8, .2, 1);
}
.rak__punggung::after {
  content: ""; position: absolute; inset: 10% 22% auto 22%; height: 2px;
  background: rgba(255, 255, 255, .55);
}
.rak__punggung:nth-child(odd) { background: linear-gradient(180deg, var(--hijau-terang) 0%, var(--biru-terang) 100%); }
.rak__punggung:hover { filter: brightness(1.08); }
.rak__foto {
  height: 100%; width: 100%; object-fit: cover; border-radius: var(--r-l);
  box-shadow: var(--bayang);
}

/* ---------- Bagian umum ---------- */

.bagian { padding: clamp(3rem, 6vw, 5rem) var(--sisi); }
.bagian--kertas { background: var(--kertas); }
.bagian__isi { max-width: 1240px; margin: 0 auto; }
.bagian__kepala { display: flex; align-items: end; justify-content: space-between; gap: 1.5rem; margin-bottom: 2rem; flex-wrap: wrap; }
.bagian__kepala p { margin: 0; color: var(--tinta-lembut); max-width: 52ch; }

/* ---------- Kartu koleksi ---------- */

.kisi { display: grid; gap: 1.5rem; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); list-style: none; margin: 0; padding: 0; }

.kartu {
  background: var(--putih); border: 1px solid var(--garis); border-radius: var(--r-m);
  overflow: hidden; display: flex; flex-direction: column;
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.kartu:hover { transform: translateY(-4px); box-shadow: var(--bayang); border-color: var(--hijau-terang); }
.kartu__media { position: relative; aspect-ratio: 3 / 4; background: var(--biru-kabut); overflow: hidden; }
.kartu__media img { width: 100%; height: 100%; object-fit: cover; }
.kartu__isi { padding: 1rem 1.1rem 1.25rem; display: flex; flex-direction: column; gap: .4rem; flex: 1; }
.kartu__judul { font-family: var(--display); font-size: 1.05rem; font-weight: 600; margin: 0; }
.kartu__judul a { color: var(--tinta); text-decoration: none; }
.kartu__judul a:hover { color: var(--hijau); }
.kartu__meta { font-family: var(--mono); font-size: .74rem; color: var(--tinta-lembut); margin: 0; }

.label {
  position: absolute; top: .7rem; left: .7rem; z-index: 2;
  font-family: var(--mono); font-size: .66rem; letter-spacing: .1em; text-transform: uppercase;
  padding: .28rem .6rem; border-radius: 999px; color: #fff; background: var(--biru);
}
.label--pdf   { background: var(--biru); }
.label--video { background: var(--hijau); }
.label--audio { background: var(--hijau-terang); }
.label--foto  { background: var(--biru-terang); }

/* ---------- Halaman item ---------- */

.item-tata { display: grid; grid-template-columns: minmax(0, 2.1fr) minmax(0, 1fr); gap: clamp(1.5rem, 4vw, 3rem); max-width: 1240px; margin: 0 auto; padding: clamp(2rem, 5vw, 3.5rem) var(--sisi); }
.item-tata__samping { position: sticky; top: 6.5rem; align-self: start; }

.metadata { border-top: 2px solid var(--hijau); padding-top: 1.25rem; }
.metadata dl { margin: 0; }
.metadata .property { padding: .85rem 0; border-bottom: 1px solid var(--garis); }
.metadata dt, .metadata .property h4 {
  font-family: var(--mono); font-size: .72rem; letter-spacing: .1em; text-transform: uppercase;
  color: var(--tinta-lembut); margin: 0 0 .3rem;
}
.metadata dd, .metadata .value { margin: 0; font-size: .95rem; }

.remah { font-family: var(--mono); font-size: .75rem; color: var(--tinta-lembut); margin-bottom: 1rem; }
.remah a { color: var(--tinta-lembut); }

/* ---------- Pembaca PDF halaman-balik ---------- */

.pembaca {
  background: linear-gradient(180deg, #0A2C4E 0%, #073A2C 100%);
  border-radius: var(--r-l); padding: clamp(1rem, 3vw, 2rem); color: #fff;
  box-shadow: var(--bayang);
}
.pembaca__panggung {
  display: flex; align-items: center; justify-content: center;
  min-height: 320px; margin-bottom: 1rem;
  perspective: 2200px;
}
.pembaca__buku { box-shadow: 0 24px 60px -18px rgba(0, 0, 0, .7); }
.pembaca__buku .stf__parent { margin: 0 auto; }
.pembaca__halaman { background: #fff; }
.pembaca__halaman canvas { width: 100%; height: 100%; display: block; }

.pembaca__kendali {
  display: flex; align-items: center; justify-content: center; gap: .6rem; flex-wrap: wrap;
}
.pembaca__tombol {
  display: inline-flex; align-items: center; justify-content: center; gap: .4rem;
  min-width: 2.6rem; height: 2.6rem; padding: 0 .9rem;
  border-radius: 999px; border: 1px solid rgba(255, 255, 255, .28);
  background: rgba(255, 255, 255, .08); color: #fff;
  font: inherit; font-size: .88rem; font-weight: 600; cursor: pointer;
}
.pembaca__tombol:hover:not(:disabled) { background: var(--hijau-terang); border-color: transparent; }
.pembaca__tombol:disabled { opacity: .35; cursor: not-allowed; }
.pembaca__posisi { font-family: var(--mono); font-size: .82rem; letter-spacing: .06em; min-width: 7.5rem; text-align: center; }
.pembaca__status { text-align: center; font-family: var(--mono); font-size: .8rem; opacity: .85; padding: 3rem 1rem; }
.pembaca__galat { text-align: center; padding: 2.5rem 1rem; }
.pembaca__galat a { color: #fff; }

.pembaca:fullscreen, .pembaca:-webkit-full-screen { border-radius: 0; display: flex; flex-direction: column; justify-content: center; }
.pembaca:fullscreen .pembaca__panggung { flex: 1; }

/* ---------- Media lain ---------- */

.media-video, .media-audio {
  border-radius: var(--r-m); overflow: hidden; background: #041B2D; box-shadow: var(--bayang);
}
.media-video video { width: 100%; display: block; background: #000; }
.media-audio { padding: 1.25rem; }
.media-audio audio { width: 100%; }
.media-semat { position: relative; padding-top: 56.25%; border-radius: var(--r-m); overflow: hidden; }
.media-semat iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }

.media-keterangan { font-size: .88rem; color: var(--tinta-lembut); margin: .6rem 0 0; }

.media-daftar { display: grid; gap: 2rem; margin: 0; padding: 0; list-style: none; }

/* ---------- Paginasi & telusur ---------- */

.pagination { display: flex; align-items: center; gap: .5rem; justify-content: center; margin: 2.5rem 0 0; font-family: var(--mono); font-size: .85rem; }
.pagination a, .pagination .button { display: inline-flex; align-items: center; justify-content: center; min-width: 2.4rem; height: 2.4rem; border-radius: 999px; border: 1px solid var(--garis); text-decoration: none; }
.pagination a:hover { background: var(--hijau-kabut); border-color: var(--hijau); }

.saring { display: flex; gap: .5rem; flex-wrap: wrap; margin-bottom: 1.5rem; }
.saring button, .saring a {
  border: 1px solid var(--garis); background: var(--putih); color: var(--tinta);
  padding: .45rem 1rem; border-radius: 999px; font: inherit; font-size: .85rem; cursor: pointer; text-decoration: none;
}
.saring [aria-pressed="true"], .saring .aktif { background: var(--hijau); color: #fff; border-color: var(--hijau); }

/* ---------- Kaki situs ---------- */

.kaki {
  background: var(--biru); color: rgba(255, 255, 255, .85);
  padding: clamp(2.5rem, 5vw, 4rem) var(--sisi) 2rem;
  margin-top: 4rem;
}
.kaki__grid { max-width: 1240px; margin: 0 auto; display: grid; gap: 2rem; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.kaki h3 { color: #fff; font-size: 1rem; }
.kaki a { color: #fff; }
.kaki__bawah { max-width: 1240px; margin: 2.5rem auto 0; padding-top: 1.25rem; border-top: 1px solid rgba(255, 255, 255, .22); font-size: .82rem; display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap; }

/* ---------- Responsif ---------- */

@media (max-width: 900px) {
  .hero__grid { grid-template-columns: 1fr; }
  .rak { height: 200px; }
  .item-tata { grid-template-columns: 1fr; }
  .item-tata__samping { position: static; }
}

@media (max-width: 720px) {
  .menu-tombol {
    display: inline-flex; margin-left: auto; align-items: center; gap: .5rem;
    border: 1px solid var(--garis); background: var(--putih); color: var(--tinta);
    padding: .5rem .9rem; border-radius: 999px; font: inherit; font-weight: 600; cursor: pointer;
  }
  .navigasi { order: 3; width: 100%; margin-left: 0; display: none; }
  .navigasi[data-terbuka="true"] { display: block; }
  .navigasi ul { flex-direction: column; }
  .kepala__isi { flex-wrap: wrap; }
  .cari { order: 4; width: 100%; }
  .cari input { flex: 1; min-width: 0; }
  .pembaca__posisi { order: -1; width: 100%; }
}

/* ============================================================
   Navigasi desktop selalu satu baris
   ============================================================ */

@media (min-width: 721px) {

  .kepala__isi {
    flex-wrap: nowrap;
  }

  .merek {
    flex: 0 0 auto;
  }

  .navigasi {
    margin-left: auto;
    min-width: 0;
    overflow-x: auto;
    scrollbar-width: none;
  }

  .navigasi::-webkit-scrollbar {
    display: none;
  }

  .navigasi ul {
    flex-wrap: nowrap;
    white-space: nowrap;
  }

  .navigasi li {
    flex: 0 0 auto;
  }

  .navigasi a {
    white-space: nowrap;
    padding: .5rem .7rem;
  }

  .cari {
    flex: 0 0 auto;
  }

}
/* ============================================================ */

@media print {
  .kepala, .kaki, .pembaca__kendali, .navigasi { display: none; }
  body { color: #000; }
}