/* ============================================================
   BUKU KITA — Happy Mensiversary 3 Bulan, untuk Yee ❤️
   Konsep: buku album (gallery book)
   ============================================================ */

:root{
  --paper:#fffdfa;
  --paper-2:#fdf6f1;
  --cream:#faf1ec;
  --bg:#f6ebe6;
  --rose:#c9567a;
  --rose-soft:#e8a3b7;
  --rose-deep:#9e3358;
  --plum:#4a333c;
  --plum-soft:#7b636c;
  --gold:#c9a227;
  --line:rgba(74,51,60,.10);
  --shadow:0 34px 70px -34px rgba(120,55,80,.55);
  --shadow-sm:0 10px 26px -14px rgba(120,55,80,.45);
  --serif:'Playfair Display',Georgia,serif;
  --sans:'Plus Jakarta Sans',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;
  --hand:'Caveat','Segoe Script',cursive;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}

body{
  margin:0;
  font-family:var(--sans);
  color:var(--plum);
  background:var(--bg);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit}

/* ---------- latar bokeh lembut ---------- */
.bokeh{position:fixed;inset:0;z-index:0;pointer-events:none;overflow:hidden}
.bokeh i{
  position:absolute;border-radius:50%;
  background:radial-gradient(circle,rgba(232,163,183,.55),rgba(232,163,183,0) 70%);
  animation:drift linear infinite;
  will-change:transform,opacity;
}
@keyframes drift{
  0%{transform:translateY(12vh) scale(.85);opacity:0}
  15%{opacity:.7}
  85%{opacity:.5}
  100%{transform:translateY(-108vh) scale(1.15);opacity:0}
}

/* ---------- tombol musik ---------- */
.music-btn{
  position:fixed;right:18px;bottom:18px;z-index:50;
  width:52px;height:52px;border-radius:50%;
  background:#fff;box-shadow:var(--shadow-sm);
  display:grid;place-items:center;font-size:20px;
  transition:transform .25s ease;
}
.music-btn:hover{transform:scale(1.08)}
.music-btn.is-on{background:linear-gradient(135deg,var(--rose),var(--rose-deep));color:#fff}
.music-btn.is-on .music-btn__icon{animation:spin 3.2s linear infinite;display:block}
@keyframes spin{to{transform:rotate(360deg)}}

/* ============================================================
   COVER
   ============================================================ */
.cover{
  position:relative;z-index:2;
  min-height:100vh;      /* cadangan untuk browser lama */
  min-height:100svh;
  display:grid;place-items:center;
  padding:34px 20px 60px;
}
body.is-open .cover{display:none}

.cover__wrap{text-align:center;width:100%;max-width:440px}

.cover__book{
  position:relative;
  border-radius:6px 16px 16px 6px;
  padding:clamp(30px,7vw,52px) clamp(22px,5.5vw,44px);
  background:
    radial-gradient(120% 90% at 20% 0%, rgba(255,255,255,.16), transparent 55%),
    linear-gradient(150deg,#8e2c4c 0%,#a8375c 38%,#8a2a49 100%);
  box-shadow:
    -3px 0 0 #6d1f38,
    -7px 0 0 #7c2741,
    -10px 0 0 #8e2c4c,
    0 34px 70px -30px rgba(90,25,50,.75);
  overflow:hidden;
  animation:coverIn 1s cubic-bezier(.2,.8,.25,1) both;
}
@keyframes coverIn{from{opacity:0;transform:translateY(28px) rotateX(9deg)}to{opacity:1;transform:none}}

.cover__spine{
  position:absolute;left:0;top:0;bottom:0;width:26px;
  background:linear-gradient(90deg,rgba(0,0,0,.34),rgba(0,0,0,.05) 60%,rgba(255,255,255,.09));
}
.cover__frame{
  position:relative;
  border:1.5px solid rgba(255,222,170,.42);
  border-radius:3px;
  padding:clamp(24px,5.5vw,40px) clamp(14px,3.5vw,26px);
}
.cover__frame::before,
.cover__frame::after{
  content:'';position:absolute;left:8px;right:8px;height:1px;
  background:rgba(255,222,170,.30);
}
.cover__frame::before{top:8px}
.cover__frame::after{bottom:8px}

.cover__kicker{
  font-family:var(--hand);font-size:clamp(20px,4.6vw,26px);
  color:#ffd9a8;margin:0 0 2px;line-height:1.2;
}
.cover__title{
  font-family:var(--serif);font-weight:600;
  font-size:clamp(44px,12vw,72px);line-height:1;
  color:#fff;margin:0;letter-spacing:-.02em;
  text-shadow:0 3px 18px rgba(0,0,0,.35);
}
.cover__sub{
  font-family:var(--hand);font-size:clamp(28px,7vw,40px);
  color:#ffe6c4;margin:2px 0 0;line-height:1.15;
}
.cover__rule{
  display:flex;align-items:center;gap:12px;
  margin:20px 0;color:#ffd9a8;
}
.cover__rule::before,
.cover__rule::after{
  content:'';flex:1;height:1px;background:rgba(255,222,170,.42);
}
.cover__rule span{font-size:17px}

.cover__to,.cover__from{
  margin:0;color:#ffeede;font-size:clamp(14px,3.4vw,16.5px);
}
.cover__to b,.cover__from b{color:#fff;font-weight:600}
.cover__from{margin-top:4px;opacity:.9}

.cover__open{
  margin-top:30px;
  padding:15px 38px;border-radius:999px;
  background:#fff;color:var(--rose-deep);
  font-weight:600;font-size:16px;
  box-shadow:0 18px 40px -18px rgba(90,25,50,.7);
  transition:transform .25s ease,background .25s ease,color .25s ease;
}
.cover__open:hover{
  transform:translateY(-3px);
  background:linear-gradient(135deg,var(--rose),var(--rose-deep));
  color:#fff;
}
.cover__hint{
  margin:16px 0 0;font-size:13.5px;color:var(--plum-soft);
}

/* ============================================================
   BUKU
   ============================================================ */
.bookwrap{
  display:none;
  position:relative;z-index:2;
  padding:clamp(26px,5vw,54px) 0 clamp(40px,7vw,70px);
}
body.is-open .bookwrap{display:block}

.book{
  max-width:1120px;margin:0 auto;
  padding:0 clamp(14px,3.5vw,30px);
  position:relative;
  perspective:2600px;
}

/* penanda halaman (ribbon) */
.book__ribbon{
  position:absolute;right:clamp(6px,2.5vw,22px);top:6%;
  width:22px;height:74px;
  background:linear-gradient(180deg,#d94f6e,#b03a56);
  border-radius:2px 2px 0 0;
  box-shadow:0 8px 18px -8px rgba(140,40,70,.75);
  transition:top .5s cubic-bezier(.2,.8,.25,1);
  z-index:3;
}
.book__ribbon::after{
  content:'';position:absolute;left:0;right:0;bottom:-9px;height:9px;
  background:linear-gradient(135deg,transparent 50%,#b03a56 50%),
             linear-gradient(45%,transparent 50%,#b03a56 50%);
  background:linear-gradient(135deg,transparent 50%,#b03a56 50%),
             linear-gradient(225deg,transparent 50%,#b03a56 50%);
}

/* lembaran */
.book__spread{
  position:relative;
  display:flex;
  min-height:clamp(430px,62vh,600px);
  background:var(--paper);
  border-radius:5px;
  box-shadow:
    0 0 0 1px rgba(190,150,160,.30),
    7px 7px 0 -1px #f5e9e4,
    12px 12px 0 -1px #f0e0d9,
    0 40px 80px -34px rgba(120,55,80,.55);
  overflow:hidden;
  transform-origin:center;
}
/* bayangan punggung buku (dua halaman) */
.book__spread::after{
  content:'';position:absolute;left:50%;top:0;bottom:0;width:76px;
  transform:translateX(-50%);
  background:linear-gradient(90deg,
    rgba(120,80,90,0) 0%,
    rgba(120,80,90,.10) 42%,
    rgba(120,80,90,.15) 50%,
    rgba(120,80,90,.10) 58%,
    rgba(120,80,90,0) 100%);
  pointer-events:none;z-index:4;
}
.book__spread.turn-next{animation:turnNext .68s cubic-bezier(.2,.8,.25,1) both}
.book__spread.turn-prev{animation:turnPrev .68s cubic-bezier(.2,.8,.25,1) both}
@keyframes turnNext{
  from{opacity:0;transform:rotateY(-26deg) translateX(34px)}
  to{opacity:1;transform:none}
}
@keyframes turnPrev{
  from{opacity:0;transform:rotateY(26deg) translateX(-34px)}
  to{opacity:1;transform:none}
}

/* ---------- satu halaman ---------- */
.page{
  flex:1 1 50%;
  min-width:0;
  position:relative;
  display:flex;flex-direction:column;
  padding:clamp(22px,4.2vw,44px) clamp(20px,4vw,46px);
  background:linear-gradient(180deg,var(--paper),var(--paper-2));
}
.page + .page{border-left:1px solid var(--line)}

.page__num{
  position:absolute;bottom:12px;
  font-size:11.5px;letter-spacing:.14em;
  color:var(--plum-soft);opacity:.7;
  font-variant-numeric:tabular-nums;
}
.page--left .page__num{left:clamp(20px,4vw,46px)}
.page--right .page__num{right:clamp(20px,4vw,46px)}
.page:only-child .page__num{left:50%;transform:translateX(-50%)}

.page__center{
  margin:auto;text-align:center;width:100%;
}

/* ---------- halaman pembuka (intro) ---------- */
.eyebrow{
  font-family:var(--hand);font-size:clamp(20px,4.4vw,27px);
  color:var(--rose);margin:0 0 2px;line-height:1.2;
}
.page__h{
  font-family:var(--serif);font-weight:600;
  font-size:clamp(27px,5.6vw,42px);line-height:1.16;
  letter-spacing:-.015em;margin:0 0 10px;
}
.page__p{
  color:var(--plum-soft);font-size:clamp(14.5px,3.2vw,16.5px);
  margin:0 0 22px;
}
.page__small{font-size:13.5px;color:var(--plum-soft);margin:18px 0 0}

.counters{display:grid;grid-template-columns:repeat(4,1fr);gap:clamp(6px,1.8vw,12px)}
.counter{
  background:#fff;border:1px solid var(--line);
  border-radius:14px;padding:clamp(10px,2.6vw,18px) 4px;
  text-align:center;box-shadow:0 8px 20px -14px rgba(120,55,80,.5);
}
.counter b{
  display:block;font-family:var(--serif);font-weight:600;
  font-size:clamp(19px,4.6vw,31px);line-height:1.05;
  color:var(--rose-deep);font-variant-numeric:tabular-nums;
}
.counter span{
  display:block;font-size:clamp(9.5px,2.1vw,11.5px);
  letter-spacing:.08em;text-transform:uppercase;
  color:var(--plum-soft);margin-top:4px;font-weight:500;
}

/* ---------- halaman foto (polaroid) ---------- */
.page__photo{
  margin:auto 0;
  display:flex;flex-direction:column;align-items:center;
  gap:clamp(12px,2.6vw,20px);
  width:100%;
}
.polaroid{
  position:relative;
  background:#fff;
  padding:clamp(9px,1.8vw,14px) clamp(9px,1.8vw,14px) clamp(38px,7vw,52px);
  border-radius:3px;
  box-shadow:0 16px 34px -16px rgba(120,55,80,.55), 0 1px 0 rgba(0,0,0,.03);
  transform:rotate(-1.5deg);
  width:100%;max-width:min(100%,400px);
}
.polaroid:nth-child(even){transform:rotate(1.4deg)}
.polaroid img{
  width:100%;height:auto;
  max-height:min(46vh,420px);
  object-fit:cover;
  background:#f4e7ec;
  border-radius:2px;
}
.polaroid__cap{
  position:absolute;left:10px;right:10px;bottom:9px;
  text-align:center;
  font-family:var(--hand);font-size:clamp(17px,3.7vw,22px);
  color:#8d5567;line-height:1.2;
}
.tape{
  position:absolute;top:-11px;left:50%;
  transform:translateX(-50%) rotate(-2.5deg);
  width:clamp(74px,17vw,96px);height:25px;
  background:rgba(255,222,163,.62);
  box-shadow:0 2px 6px -3px rgba(120,80,40,.4);
}
.tape::before,.tape::after{
  content:'';position:absolute;top:0;bottom:0;width:1px;
  background:rgba(160,120,60,.16);
}
.tape::before{left:3px}
.tape::after{right:3px}
.page__caption{
  font-family:var(--hand);
  font-size:clamp(19px,4.2vw,26px);
  color:var(--rose-deep);
  text-align:center;line-height:1.3;margin:0;
  max-width:34ch;
}

/* ---------- halaman doa & ucapan ---------- */
.note-head{
  font-family:var(--serif);font-weight:600;
  font-size:clamp(23px,5vw,34px);
  margin:0 0 4px;letter-spacing:-.01em;
}
.note-kicker{
  font-family:var(--hand);font-size:clamp(19px,4.2vw,25px);
  color:var(--rose);margin:0 0 16px;line-height:1.2;
}
.note-body{text-align:left}
.note-body p{
  margin:0 0 13px;
  font-size:clamp(14px,3.15vw,16px);
  color:#4f3941;line-height:1.75;
}
.note-rule{
  display:flex;align-items:center;gap:12px;
  margin:20px 0 18px;color:var(--rose-soft);
}
.note-rule::before,.note-rule::after{
  content:'';flex:1;height:1px;background:var(--line);
}
.note-sign{
  font-family:var(--hand);font-size:clamp(23px,5vw,31px);
  color:var(--rose-deep);margin-top:20px !important;line-height:1.3;
}

/* ---------- halaman penutup ---------- */
.page__end{text-align:center;margin:auto}
.page__end .big{
  font-family:var(--hand);font-size:clamp(30px,7.4vw,46px);
  color:var(--rose-deep);margin:0 0 12px;line-height:1.2;
}
.page__end .made{
  font-size:11.5px;letter-spacing:.19em;text-transform:uppercase;
  color:var(--plum-soft);font-weight:500;margin:0;
}
.page__end .heart{
  font-size:clamp(30px,7vw,42px);margin:0 0 14px;
  animation:beat 1.9s ease-in-out infinite;
}
@keyframes beat{50%{transform:scale(1.13)}}

.page--blank{background:var(--paper-2)}

/* ---------- navigasi ---------- */
.book__nav{
  max-width:1120px;margin:clamp(26px,5vw,42px) auto 0;
  padding:0 clamp(14px,3.5vw,30px);
  display:flex;align-items:center;justify-content:space-between;gap:14px;
}
.navbtn{
  display:inline-flex;align-items:center;gap:8px;
  padding:12px 22px;border-radius:999px;
  background:#fff;border:1px solid var(--line);
  color:var(--rose-deep);font-weight:600;font-size:14.5px;
  box-shadow:var(--shadow-sm);
  transition:transform .22s ease,background .22s ease,color .22s ease,opacity .22s ease;
}
.navbtn:hover:not(:disabled){
  transform:translateY(-2px);
  background:linear-gradient(135deg,var(--rose),var(--rose-deep));
  color:#fff;border-color:transparent;
}
.navbtn:disabled{opacity:.38;cursor:not-allowed}
.book__info{
  font-size:13px;letter-spacing:.1em;color:var(--plum-soft);
  font-variant-numeric:tabular-nums;white-space:nowrap;
}
.book__tip{
  text-align:center;font-size:13.5px;color:var(--plum-soft);
  margin:16px 20px 0;
}

/* ---------- footer ---------- */
.closing{
  display:none;
  position:relative;z-index:2;
  text-align:center;
  padding:clamp(44px,9vw,80px) 20px clamp(50px,9vw,78px);
  background:linear-gradient(180deg,transparent,var(--cream));
}
body.is-open .closing{display:block}
.closing__big{
  font-family:var(--hand);font-size:clamp(30px,7vw,44px);
  color:var(--rose-deep);margin:0 0 12px;line-height:1.2;
}
.closing__made{
  font-size:11.5px;letter-spacing:.19em;text-transform:uppercase;
  color:var(--plum-soft);font-weight:500;margin:0;
}

/* ---------- lightbox ---------- */
.lb{
  position:fixed;inset:0;z-index:60;
  display:none;place-items:center;
  background:rgba(44,26,34,.94);
  backdrop-filter:blur(9px);padding:20px;
}
.lb.is-open{display:grid;animation:fade .28s ease both}
@keyframes fade{from{opacity:0}to{opacity:1}}
.lb__img{
  max-width:min(94vw,1180px);
  max-height:88vh;       /* cadangan untuk browser lama */
  max-height:88svh;
  border-radius:12px;object-fit:contain;
  box-shadow:0 34px 90px -26px rgba(0,0,0,.85);
  animation:zoom .34s cubic-bezier(.2,.8,.25,1) both;
}
@keyframes zoom{from{opacity:0;transform:scale(.94)}to{opacity:1;transform:none}}
.lb__close{
  position:absolute;top:16px;right:18px;
  width:44px;height:44px;border-radius:50%;
  background:rgba(255,255,255,.14);color:#fff;font-size:19px;
  display:grid;place-items:center;transition:background .25s ease;
}
.lb__close:hover{background:rgba(255,255,255,.3)}

/* ============================================================
   RESPONSIF — satu halaman di layar kecil
   ============================================================ */
@media(max-width:840px){
  .book__spread{min-height:clamp(420px,72vh,620px)}
  .book__spread::after{display:none}      /* tidak ada punggung buku */
  .page{flex:1 1 100%}
  .page + .page{border-left:0}
  .book__ribbon{right:8px;width:16px;height:56px}
  .polaroid img{max-height:min(38vh,340px)}
  .navbtn{padding:11px 16px;font-size:13.5px}
  .navbtn span{display:none}              /* sisakan tanda panah saja */
}
@media(max-width:420px){
  .page{padding:20px 16px}
  .page--left .page__num{left:16px}
  .page--right .page__num{right:16px}
}

@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.01ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.01ms !important;
  }
  html{scroll-behavior:auto}
  .bokeh{display:none}
}

/* ---------- halaman harapan Yee (halaman terakhir) ---------- */
/* Awalannya KOSONG TOTAL (tanpa kotak/tulisan); seluruh halaman bisa diketuk. */
.hope{width:100%}
.hope--empty{
  display:flex;align-items:center;justify-content:center;
  width:100%;min-height:min(54vh,380px);
  cursor:pointer;-webkit-tap-highlight-color:transparent;
}
.hope__blank{display:block;width:100%;min-height:min(54vh,380px)}

/* animasi masuk */
@keyframes hopeIn  {from{opacity:0;transform:translateY(18px) scale(.96)}to{opacity:1;transform:none}}
@keyframes hopeRise{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}
@keyframes hopeFade{from{opacity:0}to{opacity:1}}

.hope--form{animation:hopeIn .6s cubic-bezier(.22,1,.36,1) both}
.hope--form .hope__formhint{animation:hopeRise .55s cubic-bezier(.22,1,.36,1) .09s both}
.hope--form .hope__ta{animation:hopeRise .6s cubic-bezier(.22,1,.36,1) .16s both}
.hope--form .hope__row{animation:hopeRise .6s cubic-bezier(.22,1,.36,1) .24s both}
.hope--form .hope__status{animation:hopeFade .55s ease .32s both}

.hope--filled{animation:hopeIn .75s cubic-bezier(.22,1,.36,1) both}
.hope--filled .hope__text{animation:hopeRise .7s cubic-bezier(.22,1,.36,1) .12s both}
.hope--filled .hope__date{animation:hopeRise .7s cubic-bezier(.22,1,.36,1) .24s both}
.hope--filled .hope__lock{animation:hopeFade .8s ease .36s both}

.hope__text{
  font-family:var(--hand);font-size:clamp(20px,4.6vw,27px);
  color:var(--rose-deep);line-height:1.45;margin:0 0 14px;
  white-space:pre-wrap;word-break:break-word;text-align:center;
}
.hope__date{
  font-size:11.5px;letter-spacing:.12em;text-transform:uppercase;
  color:var(--plum-soft);margin:0 0 8px;
}
.hope__lock{
  font-family:var(--hand);font-size:clamp(17px,3.8vw,21px);
  color:var(--rose-soft);margin:0;
}

.hope__formhint{
  font-family:var(--hand);font-size:clamp(18px,4vw,23px);
  color:var(--rose);margin:0 0 12px;
}
.hope__ta{
  width:100%;min-height:128px;resize:vertical;
  font-family:var(--hand);font-size:clamp(19px,4.4vw,25px);
  color:var(--rose-deep);line-height:1.45;
  padding:12px 14px;border-radius:12px;
  border:1.4px solid rgba(201,86,122,.35);background:#fffdfa;
}
.hope__ta:focus{outline:none;border-color:var(--rose);box-shadow:0 0 0 3px rgba(201,86,122,.12)}
.hope__ta::placeholder{color:rgba(123,99,108,.55)}
.hope__row{display:flex;gap:10px;justify-content:center;margin-top:12px;flex-wrap:wrap}
.hope__save{
  padding:10px 20px;border-radius:999px;color:#fff;font-size:13.5px;font-weight:600;
  background:linear-gradient(135deg,var(--rose),var(--rose-deep));
  box-shadow:var(--shadow-sm);
}
.hope__save:disabled{opacity:.6;cursor:default}
.hope__cancel{
  padding:10px 16px;border-radius:999px;font-size:13px;
  color:var(--plum-soft);border:1.2px solid var(--line);
}
.hope__status{margin:10px 0 0;font-size:12.5px;color:var(--rose-deep);min-height:16px}

@media(max-width:420px){
  .hope__ta{min-height:110px}
  .hope--empty,.hope__blank{min-height:min(48vh,320px)}
}
@media (prefers-reduced-motion: reduce){
  .hope--form,.hope--filled,
  .hope--form *,.hope--filled *{animation:none !important}
}