/* ============================================================
   KACA BENING — format ALIR LAYAR (Premium).
   Kemewahan bening modern: putih es, panel kaca buram (blur HANYA
   pada panel kecil), garis aksen perak-biru pucat, sans tipis Jost
   + serif Cormorant untuk nama. Tanda tangan: garis cahaya tipis
   menyapu tepi panel kaca saat bab berganti.
   Format: Bagian Layar min-height:100dvh (tumbuh, tak pernah
   memotong), Zona Alir menyambung, TANPA jepret-gulir sama sekali.
   ============================================================ */
:root{
  --es:#f5f9fc; --es-dalam:#e9f1f7; --panel:rgba(255,255,255,.58);
  --tinta:#22303c; --tinta-lembut:#5d7182;
  --aksen:#7fb0d8; --aksen-tua:#4a7ca5; --garis:rgba(127,176,216,.45);
  --serif:'Cormorant Garamond',Georgia,'Times New Roman',serif;
  --sans:'Jost',system-ui,-apple-system,'Segoe UI',sans-serif;
  --arab:'Amiri',serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
html.jelajah-aktif{scroll-behavior:auto}
body{margin:0;background:#dfe9f1;color:var(--tinta);font-family:var(--sans);font-weight:300;line-height:1.7;-webkit-font-smoothing:antialiased}
body.terkunci{overflow:hidden}
img{max-width:100%;display:block}
:focus-visible{outline:2px solid var(--aksen-tua);outline-offset:3px}
h1,h2,h3{font-family:var(--serif);font-weight:500;margin:0}
button{font-family:var(--sans)}

/* Kolom konten terpusat ±480px. Latar main BERGANTI DISKRET antar-bab
   (Ganti Air): kelas data-bab ditukar JS saat bab baru melintasi tengah
   layar, warna bertransisi ±0,6 dtk — bukan scrub, agar tidak keruh. */
main{max-width:480px;margin:0 auto;background:var(--es);box-shadow:0 0 44px rgba(74,124,165,.18);padding-bottom:5.5rem;transition:background-color .6s ease}
main[data-bab="salam"]{background:#f5f9fc}
main[data-bab="mempelai"]{background:#edf4f9}
main[data-bab="kisah"]{background:#e7f0f6}
main[data-bab="acara"]{background:#f0f6fa}
main[data-bab="zona"]{background:#f8fbfd}
main[data-bab="penutup"]{background:#e9f1f7}

/* ---------- Bagian Layar & Zona Alir ---------- */
/* min-height, BUKAN height terkunci: bagian tumbuh bila isi memaksa,
   konten tidak pernah terpotong. Tanpa overflow:hidden di sini. */
.bagian-layar{min-height:100dvh;display:flex;flex-direction:column;justify-content:center;padding:3rem 1.4rem;position:relative;text-align:center}
.zona{padding:3.2rem 1.4rem 2.6rem;position:relative;text-align:center}
.zona.pendek{padding-top:1.2rem}

/* ---------- Tumpuk Naik: kisah 3 lapis sticky ---------- */
/* Lapis menempel di puncak layar; lapis berikutnya meluncur naik dan
   menutupinya. Tepi bayangan lembut pada lapis penutup memberi isyarat
   kedalaman. Tanpa bayangan/filter pada lapis yang menempel (murah).
   Syarat dijaga: tidak ada leluhur ber-overflow/transform/filter. */
.bungkus-tumpuk{position:relative}
.tumpuk{position:sticky;top:0;background:linear-gradient(180deg,#eef5fa,#e4eef6);z-index:1}
.tumpuk:nth-child(2){z-index:2}
.tumpuk:nth-child(3){z-index:3}
.tumpuk-dalam{box-shadow:0 -18px 34px rgba(74,124,165,.16)}

/* ---------- Panel kaca (blur TERBATAS pada panel kecil) ---------- */
.panel-kaca{position:relative;overflow:hidden;background:var(--panel);border:1px solid rgba(255,255,255,.75);border-radius:18px;box-shadow:0 14px 34px rgba(74,124,165,.13);padding:1.7rem 1.3rem;max-width:26rem;margin:0 auto;width:100%}
@supports (backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px)){
  .panel-kaca{backdrop-filter:blur(12px) saturate(1.3);-webkit-backdrop-filter:blur(12px) saturate(1.3)}
}
@supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))){
  .panel-kaca{background:rgba(255,255,255,.9)}
}
/* Garis cahaya tanda tangan: menyapu tepi atas panel SEKALI saat
   section-nya menjadi aktif (bab berganti). Hanya transform. */
.garis-cahaya{position:absolute;top:0;left:0;width:55%;height:2px;pointer-events:none;
  background:linear-gradient(90deg,transparent,rgba(148,197,232,.95),rgba(255,255,255,.95),transparent);
  transform:translateX(-130%)}
section.sapuan-aktif .garis-cahaya{animation:sapuCahaya 1.1s ease-out .05s 1 forwards}
@keyframes sapuCahaya{to{transform:translateX(230%)}}

/* ---------- Tipografi & elemen bersama ---------- */
.label-bagian{letter-spacing:.42em;text-transform:uppercase;font-size:.68rem;color:var(--aksen-tua);margin:0 0 .8rem;font-weight:500}
.judul-bagian{font-size:2rem;line-height:1.2;margin-bottom:1.2rem;letter-spacing:.02em}
.teks-isi{color:#3c4f5e;max-width:34rem;margin-left:auto;margin-right:auto}
.garis{border:none;border-top:1px solid var(--garis);width:64px;margin:1.1em auto}
.segel{display:inline-flex;align-items:center;justify-content:center;width:64px;height:64px;border:1px solid var(--aksen);border-radius:50%;outline:1px solid rgba(255,255,255,.8);outline-offset:4px;font-family:var(--serif);font-size:1.25rem;color:var(--aksen-tua);background:rgba(255,255,255,.65);box-shadow:inset 0 1px 0 rgba(255,255,255,.9),0 6px 18px rgba(74,124,165,.15)}

/* ---------- Tirai Turun (foto pembuka bagian) ---------- */
/* Keadaan dasar = foto tampil UTUH (tanpa dukungan pun aman).
   Scrub clip-path hanya di dalam @supports view() + no-preference:
   terbuka dari atas ke bawah mengikuti gulir, direntang selesai
   kira-kira saat tepi atas foto mencapai garis panggung 65%
   (rentang entry 85% pada foto setinggi ±40-55% layar). */
.tirai{margin:0 auto 1.3rem;max-width:290px;background:rgba(255,255,255,.55);padding:8px;border:1px solid rgba(255,255,255,.75);border-radius:14px;box-shadow:0 14px 32px rgba(74,124,165,.16)}
.tirai img{width:100%;height:auto;aspect-ratio:3/4;object-fit:cover;border-radius:8px}
.tirai.lebar{max-width:350px}
.tirai.lebar img{aspect-ratio:4/3}
.tirai.kecil{max-width:330px;margin-bottom:1.1rem}
.tirai.kecil img{aspect-ratio:3/2}
#penutup .tirai{max-width:270px}
#penutup .tirai img{aspect-ratio:4/5}
@supports (animation-timeline: view()){
  @media (prefers-reduced-motion: no-preference){
    .tirai img{clip-path:inset(0 0 100% 0);animation:tiraiBuka linear both;animation-timeline:view();animation-range:entry 0% entry 85%}
  }
}
@keyframes tiraiBuka{to{clip-path:inset(0 0 0% 0)}}

/* ---------- Preloader ---------- */
#preloader{display:none}
html.js #preloader{position:fixed;inset:0;z-index:90;background:var(--es);display:flex;align-items:center;justify-content:center;text-align:center}
html.pre-selesai #preloader{opacity:0;pointer-events:none;transition:opacity .35s ease}
.pre-dalam{padding:2rem 1.5rem;max-width:24rem}
.pre-nama{font-family:var(--serif);font-size:1.5rem;margin:1rem 0 1.4rem;color:var(--tinta)}
.pre-jalur{width:190px;height:2px;background:var(--garis);margin:0 auto}
#preIsi{display:block;height:100%;width:0;background:var(--aksen-tua);transition:width .3s ease}
.pre-status{font-size:.82rem;color:var(--tinta-lembut);margin:1rem 0 0}

/* ---------- Sampul: tepat 1 layar (standar sampul pabrik) ---------- */
#sampul{position:relative;height:100dvh;max-height:100dvh;overflow:hidden;background:linear-gradient(180deg,#f7fbfe,#e8f1f8);display:flex;align-items:center;justify-content:center;text-align:center}
html.js #sampul{position:fixed;inset:0;z-index:60}
.isi-sampul{position:relative;z-index:4;padding:1.2em;width:100%;max-width:27em;font-size:16px}
.sampul-panel{padding:1.5em 1.3em}
.sampul-foto{margin:.9em auto 0;max-width:13.5em;background:rgba(255,255,255,.6);padding:.55em;border:1px solid rgba(255,255,255,.8);border-radius:14px;box-shadow:0 12px 28px rgba(74,124,165,.16)}
.sampul-foto img{width:100%;height:auto;aspect-ratio:4/5;object-fit:cover;border-radius:9px}
.label-atas{letter-spacing:.42em;text-transform:uppercase;font-size:.66em;color:var(--aksen-tua);margin:.85em 0 0;font-weight:500}
.nama-sampul{font-size:1.66em;line-height:1.16;margin-top:.65em}
.nama-sampul .dan{color:var(--aksen-tua);font-style:italic;font-size:.62em}
.tanggal-sampul{letter-spacing:.14em;color:var(--tinta-lembut);margin:.55em 0 0;text-transform:uppercase;font-size:.78em}
.hormat{color:var(--tinta-lembut);font-size:.86em;margin:0}
.nama-tamu{font-family:var(--serif);font-size:1.32em;margin:.15em 0 .85em;overflow-wrap:anywhere}
.tombol-buka{background:var(--aksen-tua);color:#fff;border:1px solid var(--aksen-tua);border-radius:999px;padding:.9em 2.2em;letter-spacing:.16em;text-transform:uppercase;font-size:.8em;font-weight:500;cursor:pointer;min-height:50px}
.tombol-buka:hover{background:#3c6a91;border-color:#3c6a91}
.tombol-buka:disabled{opacity:.55;cursor:wait}
/* Koreografi buka khas Kaca Bening: panel kaca terangkat lembut +
   garis cahayanya menyapu — satu adegan dengan musik & tirai pertama. */
#sampul.terbuka .sampul-panel{animation:panelNaik 1.15s cubic-bezier(.22,.61,.21,1) 1 forwards;will-change:transform,opacity}
@keyframes panelNaik{0%{transform:translateY(0);opacity:1}100%{transform:translateY(-16px);opacity:.25}}
#sampul.terbuka .garis-cahaya{animation:sapuCahaya 1.15s ease-out 1 forwards}

/* ---------- Salam ---------- */
.teks-arab{font-family:var(--arab);font-size:1.7rem;margin:0 0 .6rem;color:var(--tinta)}
.salam{font-family:var(--serif);font-size:1.3rem;font-style:italic}
.ayat{margin:1.3rem auto;max-width:32rem;border-top:1px solid var(--garis);border-bottom:1px solid var(--garis);padding:1.1rem .6rem}
.ayat p{font-family:var(--serif);font-size:1.14rem;font-style:italic;margin:0}
.ayat cite{display:block;margin-top:.7rem;font-style:normal;letter-spacing:.22em;text-transform:uppercase;font-size:.7rem;color:var(--aksen-tua);font-family:var(--sans)}

/* ---------- Mempelai ---------- */
.kartu-orang{padding:1.4rem 1.3rem}
.nama-mempelai{font-size:1.8rem;margin:.1rem 0}
.orangtua{color:var(--tinta-lembut);font-size:.92rem;margin:.3rem 0 .7rem}
.tautan-ig{display:inline-flex;align-items:center;min-height:44px;padding:.45rem 1.1rem;border:1px solid var(--aksen-tua);border-radius:999px;color:var(--aksen-tua);text-decoration:none;font-size:.85rem;letter-spacing:.08em}
.tautan-ig:hover{background:var(--aksen-tua);color:#fff}

/* ---------- Hitung mundur ---------- */
.hitung{display:flex;gap:.55rem;justify-content:center;margin:1.2rem 0 .8rem;flex-wrap:wrap}
.kotak-waktu{background:rgba(255,255,255,.65);border:1px solid rgba(255,255,255,.8);border-radius:12px;min-width:64px;padding:.7rem .4rem;box-shadow:0 8px 20px rgba(74,124,165,.12)}
.kotak-waktu .angka{display:block;font-family:var(--serif);font-size:1.7rem;line-height:1.1;color:var(--tinta)}
.kotak-waktu .label{letter-spacing:.24em;text-transform:uppercase;font-size:.62rem;color:var(--aksen-tua)}
.label-hitung{color:var(--tinta-lembut);font-size:.9rem}
.tombol-utama{display:inline-block;background:var(--aksen-tua);color:#fff;border:1px solid var(--aksen-tua);border-radius:999px;padding:.8rem 1.8rem;letter-spacing:.12em;text-transform:uppercase;font-size:.85rem;font-weight:500;cursor:pointer;min-height:50px;text-decoration:none}
.tombol-utama:hover{background:#3c6a91;border-color:#3c6a91}
.tombol-utama.penuh{width:100%}
.pesan-kalender{min-height:1.2em;color:var(--aksen-tua);font-size:.88rem}

/* ---------- Kartu acara (Akad & Resepsi = Bagian Layar sendiri) ---------- */
.kartu-acara .tanggal-besar{font-family:var(--serif);font-size:1.2rem;margin:.4rem 0;letter-spacing:.14em;text-transform:uppercase}
.kartu-acara p{margin:.3rem 0;color:#3c4f5e}
.kartu-acara .tempat{font-weight:500;font-size:1.05rem;color:var(--tinta)}
.kartu-acara .alamat{color:var(--tinta-lembut);font-size:.9rem}
.tombol-peta{display:inline-flex;align-items:center;min-height:44px;margin-top:.8rem;padding:.5rem 1.3rem;border:1px solid var(--aksen-tua);border-radius:999px;color:var(--aksen-tua);text-decoration:none;font-size:.85rem;letter-spacing:.08em}
.tombol-peta:hover{background:var(--aksen-tua);color:#fff}
.busana{color:var(--tinta-lembut);font-size:.92rem;margin-top:1.1rem}

/* ---------- Galeri: kisi 2 kolom searah baris ---------- */
.kisi-galeri{display:grid;grid-template-columns:1fr 1fr;gap:.8rem;max-width:26rem;margin:1.2rem auto 0}
.kisi-galeri figure{margin:0;background:rgba(255,255,255,.6);padding:7px;border:1px solid rgba(255,255,255,.8);border-radius:12px;box-shadow:0 8px 22px rgba(74,124,165,.1)}
.kisi-galeri button{padding:0;border:none;background:none;cursor:pointer;width:100%;display:block;min-height:44px}
.kisi-galeri img{width:100%;height:auto;aspect-ratio:3/4;object-fit:cover;border-radius:8px}
.kisi-galeri figcaption{font-size:.7rem;color:var(--tinta-lembut);padding:.35rem .1rem .15rem;letter-spacing:.04em}

/* ---------- Amplop ---------- */
.kartu-amplop{background:var(--panel);border:1px solid rgba(255,255,255,.75);border-radius:16px;padding:1.4rem 1.2rem;margin:0 auto 1.2rem;max-width:26rem;box-shadow:0 10px 26px rgba(74,124,165,.1)}
.kartu-amplop .bank{letter-spacing:.3em;text-transform:uppercase;font-size:.72rem;color:var(--aksen-tua);margin:0;font-weight:500}
.kartu-amplop .nomor{font-family:var(--serif);font-size:1.5rem;margin:.4rem 0 .1rem;overflow-wrap:anywhere}
.kartu-amplop .nomor.alamat-fisik{font-size:1rem;font-family:var(--sans)}
.kartu-amplop .atas-nama{color:var(--tinta-lembut);font-size:.88rem;margin:0 0 .8rem}
.tombol-salin{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:.55rem 1.5rem;background:none;border:1px solid var(--aksen-tua);border-radius:999px;color:var(--aksen-tua);font-size:.85rem;letter-spacing:.08em;cursor:pointer}
.tombol-salin:hover{background:var(--aksen-tua);color:#fff}
.pesan-salin{min-height:1.2em;color:var(--aksen-tua);font-size:.86rem;margin:.5rem 0 0}

/* ---------- RSVP ---------- */
.label-demo{background:rgba(255,255,255,.7);border:1px dashed var(--aksen-tua);border-radius:12px;color:var(--aksen-tua);padding:.65rem .8rem;font-size:.85rem;max-width:26rem;margin-inline:auto}
form{margin:1.3rem auto 0;max-width:26rem;text-align:left}
form label{display:block;margin-bottom:.95rem;font-size:.9rem;color:var(--tinta-lembut)}
form input,form select,form textarea{width:100%;margin-top:.35rem;background:rgba(255,255,255,.75);border:1px solid var(--garis);border-radius:10px;color:var(--tinta);padding:.7rem .8rem;font-family:var(--sans);font-size:1rem;min-height:48px}
form textarea{min-height:auto}
.pesan-form{min-height:1.2em;color:var(--aksen-tua);font-size:.9rem}
#daftarUcapan{max-width:26rem;margin:1.6rem auto 0;text-align:left}
.ucapan-item{border-left:2px solid var(--aksen);padding:.3rem 0 .3rem 1rem;margin-bottom:1.1rem}
.ucapan-item strong{font-family:var(--serif);font-size:1.1rem}
.ucapan-item .meta{font-size:.72rem;color:var(--tinta-lembut);letter-spacing:.08em;text-transform:uppercase}
.ucapan-item p{margin:.25rem 0 0;color:#3c4f5e;font-size:.93rem;overflow-wrap:anywhere}
.ucapan-kosong{color:var(--tinta-lembut);font-size:.9rem;text-align:center}

/* ---------- Turut & Penutup ---------- */
.daftar-turut{list-style:none;margin:.4rem 0 .4rem;padding:0;color:#3c4f5e}
.daftar-turut li{padding:.2rem 0}
.tanda-tangan{font-family:var(--serif);font-size:2rem;color:var(--aksen-tua);margin:.4rem 0}
.kredit-musik{font-size:.78rem;color:var(--tinta-lembut);max-width:24rem;margin:1rem auto 0}
.catatan-demo{font-size:.74rem;color:var(--tinta-lembut);max-width:24rem;margin:1.4rem auto 0}

/* ---------- Lightbox ---------- */
#lightbox{position:fixed;inset:0;z-index:80;background:rgba(240,246,250,.97);display:flex;align-items:center;justify-content:center;gap:.4rem;padding:1rem}
#lightbox[hidden]{display:none}
#lightbox .lb-isi{margin:0;text-align:center;max-width:82vw}
#lbGambar{max-width:82vw;max-height:76vh;border:8px solid #fff;box-shadow:0 16px 40px rgba(74,124,165,.25);border-radius:8px;margin:0 auto}
#lbKeterangan{color:var(--tinta);font-size:.86rem;padding-top:.7rem}
.lb-tombol{min-height:44px;min-width:44px;padding:.6rem .9rem;background:rgba(255,255,255,.8);border:1px solid var(--garis);border-radius:999px;color:var(--tinta);cursor:pointer;font-size:.88rem}
.lb-tutup{position:absolute;top:calc(.8rem + env(safe-area-inset-top));right:1rem}

/* ---------- Navigasi alir: rel titik + menu lompat ---------- */
#relTitik{position:fixed;right:4px;top:50%;transform:translateY(-50%);z-index:65;display:flex;flex-direction:column}
#relTitik[hidden]{display:none}
#relTitik .titik{display:flex;align-items:center;justify-content:center;width:44px;height:44px;text-decoration:none}
#relTitik .titik span{width:8px;height:8px;border-radius:50%;background:rgba(74,124,165,.3);border:1px solid rgba(74,124,165,.55);transition:transform .3s ease,background-color .3s ease}
#relTitik .titik.aktif span{background:var(--aksen-tua);transform:scale(1.4)}
#tombolMenu{position:fixed;top:calc(10px + env(safe-area-inset-top));right:10px;z-index:66;min-height:44px;min-width:64px;padding:.5rem 1rem;border-radius:999px;border:1px solid rgba(255,255,255,.8);background:rgba(255,255,255,.72);color:var(--aksen-tua);font-size:.85rem;letter-spacing:.14em;text-transform:uppercase;cursor:pointer;box-shadow:0 8px 22px rgba(74,124,165,.16)}
#tombolMenu[hidden]{display:none}
@supports (backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px)){
  #tombolMenu,#bilahKontrol{backdrop-filter:blur(10px) saturate(1.3);-webkit-backdrop-filter:blur(10px) saturate(1.3)}
}
/* Pembekuan kaca saat bergerak (pola hemat Bagian E): backdrop-filter di atas
   konten yang sedang bergeser memaksa blur ulang tiap frame — mahal di HP
   murah & throttle CPU. Selama ada gulir/koreografi buka, blur dimatikan
   (panel kembali ke putih tembus cahaya polosnya, nyaris tak berbeda di atas
   latar terang); efek buram kembali begitu halaman diam. Kelas .kaca-beku
   dipasang aplikasi.js. */
html.kaca-beku .panel-kaca, html.kaca-beku #tombolMenu, html.kaca-beku #bilahKontrol{
  backdrop-filter:none;-webkit-backdrop-filter:none;
}
#panelMenu{position:fixed;inset:0;z-index:85;background:rgba(243,248,251,.97);display:flex;align-items:center;justify-content:center;padding:1.2rem}
#panelMenu[hidden]{display:none}
.menu-dalam{width:100%;max-width:22rem;text-align:center;max-height:92dvh;overflow:auto}
.menu-tautan{display:flex;flex-direction:column;gap:.35rem;margin:0 0 1.2rem}
.menu-tautan a{display:flex;align-items:center;justify-content:center;min-height:48px;padding:.5rem 1rem;border:1px solid var(--garis);border-radius:12px;background:rgba(255,255,255,.75);color:var(--tinta);text-decoration:none;font-size:.95rem;letter-spacing:.05em}
.menu-tautan a:hover{border-color:var(--aksen-tua);color:var(--aksen-tua)}

/* ---------- Kontrol apung ---------- */
body.dibuka{padding-bottom:84px}
#bilahKontrol{position:fixed;left:50%;transform:translateX(-50%);bottom:calc(12px + env(safe-area-inset-bottom));z-index:70;display:flex;gap:8px;padding:8px;background:rgba(255,255,255,.82);border:1px solid rgba(255,255,255,.85);border-radius:999px;box-shadow:0 10px 28px rgba(74,124,165,.22)}
#bilahKontrol[hidden]{display:none}
#bilahKontrol button{min-height:44px;padding:0 16px;background:transparent;color:var(--tinta);border:1px solid var(--garis);border-radius:999px;font-size:.92rem;letter-spacing:.04em;cursor:pointer;white-space:nowrap}
#bilahKontrol button[disabled]{opacity:.55;cursor:default}

/* ---------- Ungkap Tangga Kata (standar G): HANYA disembunyikan bila html.js ---------- */
html.js .ungkap{opacity:0;transform:translateY(10px)}
html.js .ungkap.terlihat{opacity:1;transform:translateY(0);transition:transform var(--durasi-ungkap,.85s) cubic-bezier(.22,.61,.21,1),opacity var(--durasi-ungkap,.85s) ease}

@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001s !important;transition-duration:.001s !important}
  html.js .ungkap{opacity:1;transform:none}
  .garis-cahaya{display:none}
  /* Tumpuk dinonaktifkan: lapis tersusun biasa mengalir (riset 4.4) */
  .tumpuk{position:static}
}