/* FUTARI FILM — 紙のアルバムに写真を貼っていく感じ。
   クリーム紙 × リソグラフの色 × 丸ゴシック。事業側の茶×金とは別物にしてある。 */

:root{
  --paper:#FFF4EC;          /* 台紙 */
  --card:#FFFDFA;           /* 貼る紙 */
  --ink:#4A3138;            /* 文字（黒でなく赤みのある焦茶） */
  --dim:#A6858C;
  --line:#F3DCD2;
  --ichigo:#FF6F91;         /* いちご */
  --soda:#7ACFE8;           /* ソーダ */
  --butter:#FFCF5C;         /* バター */
  --mint:#84D6A4;
  --budou:#B98AE0;          /* ぶどう＝ひみつ */
  --tap:48px;
  --shadow:0 3px 0 rgba(74,49,56,.07), 0 10px 22px -12px rgba(74,49,56,.35);
}

*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;padding:0}
body{
  min-height:100dvh; color:var(--ink);
  font-family:"Zen Maru Gothic","Hiragino Maru Gothic ProN","Hiragino Sans","Yu Gothic",sans-serif;
  font-size:16px; font-weight:500; line-height:1.62; letter-spacing:.01em;
  overscroll-behavior-y:none;
  background:
    radial-gradient(46vw 34vw at 8% -4%,  rgba(255,111,145,.20), transparent 62%),
    radial-gradient(40vw 30vw at 104% 12%, rgba(122,207,232,.22), transparent 60%),
    radial-gradient(52vw 40vw at 82% 96%, rgba(255,207,92,.20), transparent 64%),
    var(--paper);
  background-attachment:fixed;
}
/* 紙のざらつき */
body::before{
  content:""; position:fixed; inset:0; z-index:0; pointer-events:none; opacity:.5;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='180' height='180' filter='url(%23n)' opacity='.32'/%3E%3C/svg%3E");
  mix-blend-mode:multiply;
}
body>*{position:relative;z-index:1}

button,input,textarea,select{font:inherit;color:inherit}
button{border:0;background:none;cursor:pointer;font-weight:700}
.hide{display:none!important}

.disp{font-family:"Kaisei Decol","Zen Maru Gothic",serif;font-weight:700}
.hand{font-family:"Yomogi","Zen Maru Gothic",cursive}

/* ---------- 参加画面 ---------- */
#join{min-height:100dvh;display:flex;flex-direction:column;justify-content:center;padding:34px 26px;gap:16px}
#join .deco{font-size:15px;letter-spacing:.5em;color:var(--ichigo)}
#join h1{
  font-family:"Kaisei Decol",serif; font-weight:700; font-size:38px; line-height:1.16;
  margin:0; letter-spacing:.02em;
  background:linear-gradient(100deg,var(--ichigo) 8%,#F2857A 46%,var(--butter) 96%);
  -webkit-background-clip:text; background-clip:text; color:transparent;
}
#join .lead{color:var(--dim);margin:0;font-size:15px}
#join .lead b{color:var(--ink);font-weight:700}
.field{display:flex;flex-direction:column;gap:6px}
.field label{font-size:13px;color:var(--dim);font-weight:700;letter-spacing:.06em}
.field input{
  background:var(--card); border:2px solid var(--line); border-radius:16px;
  padding:13px 16px; font-size:18px; min-height:var(--tap); font-weight:700;
  box-shadow:0 2px 0 rgba(74,49,56,.05) inset; transition:border-color .18s, box-shadow .18s;
}
.field input:focus{outline:0;border-color:var(--ichigo);box-shadow:0 0 0 4px rgba(255,111,145,.16)}
#join input#code{letter-spacing:.42em;text-align:center;font-size:28px;font-family:"Kaisei Decol",serif}
.primary{
  background:var(--ichigo); color:#fff; border-radius:18px; padding:15px;
  min-height:var(--tap); font-size:17px; letter-spacing:.06em;
  box-shadow:0 4px 0 #E2506F, 0 12px 20px -12px rgba(226,80,111,.9);
  transition:transform .12s, box-shadow .12s;
}
.primary:active{transform:translateY(3px);box-shadow:0 1px 0 #E2506F}
.ghost{
  border:2px solid var(--line); background:var(--card); border-radius:15px;
  padding:11px 15px; min-height:var(--tap); color:var(--ink); font-size:14px;
  display:inline-flex;align-items:center;justify-content:center;text-decoration:none;
}
.ghost:active{background:#FFF0EA}

/* ---------- 骨格 ---------- */
#app{padding-bottom:calc(96px + env(safe-area-inset-bottom))}
header{
  position:sticky;top:0;z-index:20;padding:13px 20px;display:flex;align-items:center;gap:10px;
  background:rgba(255,244,236,.86); backdrop-filter:blur(12px) saturate(1.2);
  border-bottom:2px dotted var(--line);
}
header .t{font-family:"Kaisei Decol",serif;font-weight:700;font-size:17px;color:var(--ichigo);flex:1;letter-spacing:.02em}
header .st{font-size:12px;color:var(--dim);font-weight:700}
section.page{padding:16px 18px 6px}

h2{
  font-size:13px;letter-spacing:.16em;color:var(--dim);font-weight:700;
  margin:26px 0 12px;display:flex;align-items:center;gap:9px;
}
h2:first-child{margin-top:8px}
h2::before{content:"";width:9px;height:9px;border-radius:3px;background:var(--butter);transform:rotate(45deg)}
h2::after{content:"";flex:1;height:2px;background:repeating-linear-gradient(90deg,var(--line) 0 6px,transparent 6px 12px)}

/* ---------- 貼った紙 ---------- */
.card{
  background:var(--card); border:2px solid var(--line); border-radius:22px;
  padding:16px 17px; margin-bottom:13px; box-shadow:var(--shadow); position:relative;
}
.card:nth-of-type(odd){transform:rotate(-.4deg)}
.card:nth-of-type(even){transform:rotate(.35deg)}
.card.now{border-color:var(--ichigo);background:#FFF8F5;transform:rotate(0)}
/* マスキングテープ */
.card.now::before{
  content:"";position:absolute;top:-11px;left:50%;transform:translateX(-50%) rotate(-1.6deg);
  width:104px;height:22px;border-radius:2px;
  background:repeating-linear-gradient(-45deg,rgba(255,207,92,.85) 0 7px,rgba(255,236,186,.85) 7px 14px);
  box-shadow:0 1px 3px rgba(74,49,56,.16);
}
.card .when{font-size:12px;color:var(--ichigo);font-weight:700;letter-spacing:.1em}
.card .ttl{font-size:20px;margin:3px 0 5px;font-weight:700;line-height:1.4}
.card .sub{font-size:13px;color:var(--dim);line-height:1.6}
.card.past{opacity:.42;filter:saturate(.5)}
.card.past .when{color:var(--dim)}
.lock{color:var(--budou)}

.big-count{
  font-family:"Kaisei Decol",serif;font-weight:700;font-size:46px;line-height:1.06;
  letter-spacing:.01em;color:var(--ink);display:flex;align-items:baseline;gap:10px;
}
.big-count::after{content:"♡";font-size:20px;color:var(--ichigo);animation:beat 1.6s ease-in-out infinite}
@keyframes beat{0%,100%{transform:scale(1)}18%{transform:scale(1.28)}36%{transform:scale(1)}54%{transform:scale(1.16)}}
.row{display:flex;gap:9px;align-items:center;flex-wrap:wrap}
.row.tight{gap:6px}

/* ---------- ミッション ---------- */
.m{
  background:var(--card); border:2px dashed var(--line); border-radius:22px;
  padding:17px; margin-bottom:13px; box-shadow:var(--shadow); position:relative;
}
.m.locked{opacity:.5;filter:saturate(.45);border-style:dotted}
.m.done{border-style:solid;border-color:var(--mint);background:#F8FFFA}
.m.done::after{
  content:"すみ";position:absolute;top:-10px;right:14px;
  background:var(--mint);color:#fff;font-size:11px;font-weight:700;letter-spacing:.1em;
  border-radius:999px;padding:3px 11px;box-shadow:0 2px 0 rgba(74,49,56,.1);
}
.m .tag{font-size:11px;letter-spacing:.12em;color:var(--dim);font-weight:700;display:flex;align-items:center;gap:7px}
.chdot{width:9px;height:9px;border-radius:50%;display:inline-block;box-shadow:0 0 0 3px rgba(255,255,255,.9), 0 1px 3px rgba(74,49,56,.2)}
.m .q{font-family:"Kaisei Decol",serif;font-size:19px;font-weight:700;margin:5px 0 6px;line-height:1.45}
.m .hint{font-family:"Yomogi",cursive;font-size:13px;color:var(--dim);line-height:1.7}
.m .act{margin-top:13px;display:flex;gap:8px;flex-wrap:wrap}
.shoot{
  background:var(--ichigo);color:#fff;border-radius:16px;padding:13px 20px;
  min-height:var(--tap);flex:1;min-width:150px;font-size:16px;letter-spacing:.04em;
  box-shadow:0 4px 0 #E2506F;transition:transform .12s,box-shadow .12s;
}
.shoot:active{transform:translateY(3px);box-shadow:0 1px 0 #E2506F}
.shoot.seal{background:var(--budou);box-shadow:0 4px 0 #9866C4}
.shoot.seal:active{box-shadow:0 1px 0 #9866C4}
.badge{
  display:inline-block;font-size:11px;font-weight:700;border:2px solid var(--line);
  border-radius:999px;padding:2px 10px;color:var(--dim);background:#fff;
}
.badge.ok{color:#3E9E63;border-color:rgba(132,214,164,.75);background:#F2FBF5}
.badge.seal{color:#8A5CBE;border-color:rgba(185,138,224,.7);background:#F9F3FE}

/* ---------- アルバム ---------- */
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:9px}
.cell{
  position:relative;aspect-ratio:1;border-radius:12px;overflow:hidden;background:#fff;
  border:3px solid #fff;box-shadow:var(--shadow);
}
.cell:nth-child(3n+1){transform:rotate(-1.1deg)}
.cell:nth-child(3n){transform:rotate(1deg)}
.cell img{width:100%;height:100%;object-fit:cover;display:block;border-radius:9px}
.cell .mk{
  position:absolute;left:5px;bottom:5px;font-size:10px;font-weight:700;
  background:rgba(255,253,250,.92);color:var(--ink);border-radius:999px;padding:1px 8px;
}
.cell .fv{position:absolute;right:5px;top:4px;font-size:16px;color:var(--ichigo);text-shadow:0 1px 3px rgba(0,0,0,.3)}
.cell .ch{position:absolute;left:5px;top:5px;font-size:9px;font-weight:700;color:#4A3138;
  border-radius:999px;padding:1px 7px;box-shadow:0 1px 3px rgba(74,49,56,.3)}
.cell.off{opacity:.34;filter:grayscale(.7)}
.cell.locked{
  display:flex;align-items:center;justify-content:center;font-size:24px;color:#fff;
  background:radial-gradient(circle at 50% 40%,#C79BEA,#9E6ACB);border-color:#fff;
}

/* ---------- 映画 ---------- */
.bar{height:12px;background:#FFEDE4;border-radius:99px;overflow:hidden;border:2px solid var(--line)}
.bar i{
  display:block;height:100%;transition:width .5s;
  background:repeating-linear-gradient(-45deg,var(--ichigo) 0 9px,#FF9BB2 9px 18px);
}
video.out{
  width:100%;max-height:62dvh;object-fit:contain;border-radius:16px;
  background:#2b1f24;margin-top:13px;border:3px solid #fff;box-shadow:var(--shadow);
}

/* ---------- タブ ---------- */
nav{
  position:fixed;left:12px;right:12px;bottom:calc(10px + env(safe-area-inset-bottom));z-index:30;
  display:grid;grid-template-columns:repeat(4,1fr);
  background:rgba(255,253,250,.94);backdrop-filter:blur(12px);
  border:2px solid var(--line);border-radius:24px;box-shadow:0 10px 26px -12px rgba(74,49,56,.5);
}
nav button{
  padding:9px 0 8px;font-size:11px;color:var(--dim);min-height:var(--tap);
  display:flex;flex-direction:column;align-items:center;gap:3px;position:relative;letter-spacing:.06em;
}
nav button svg{width:23px;height:23px;stroke:currentColor;fill:none;stroke-width:1.9;
  stroke-linecap:round;stroke-linejoin:round;transition:transform .22s cubic-bezier(.34,1.7,.5,1)}
nav button.on{color:var(--ichigo)}
nav button.on svg{transform:translateY(-2px) scale(1.14)}
nav button.on::after{content:"";position:absolute;bottom:3px;width:16px;height:3px;border-radius:9px;background:var(--ichigo)}
nav button .dot{
  position:absolute;top:7px;left:calc(50% + 9px);width:8px;height:8px;border-radius:50%;
  background:var(--butter);border:2px solid #fff;
}

/* ---------- シート ---------- */
.sheet{position:fixed;inset:0;z-index:50;background:rgba(74,49,56,.44);display:flex;align-items:flex-end;
  animation:fade .2s ease}
@keyframes fade{from{opacity:0}}
.sheet .inner{
  background:var(--card);width:100%;max-height:92dvh;overflow:auto;
  border-radius:28px 28px 0 0;border-top:3px solid var(--ichigo);
  padding:14px 20px calc(24px + env(safe-area-inset-bottom));
  animation:up .3s cubic-bezier(.2,.9,.3,1);
}
@keyframes up{from{transform:translateY(26px)}}
.sheet .grip{width:44px;height:5px;border-radius:9px;background:var(--line);margin:0 auto 14px}
.sheet h3{font-family:"Kaisei Decol",serif;margin:0 0 5px;font-size:21px;line-height:1.4}
.sheet textarea{
  width:100%;background:#FFF9F5;border:2px solid var(--line);border-radius:16px;
  padding:12px;min-height:78px;font-size:16px;font-weight:500;
}
.sheet textarea:focus{outline:0;border-color:var(--ichigo)}
.sheet .sel{background:#FFF9F5;border:2px solid var(--line);border-radius:16px;
  padding:13px 16px;font-size:17px;min-height:48px;font-weight:700;width:100%}
.sheet .prev{display:flex;gap:8px;flex-wrap:wrap;margin:12px 0}
.sheet .prev img,.sheet .prev video{
  width:84px;height:84px;object-fit:cover;border-radius:11px;background:#eee;
  border:3px solid #fff;box-shadow:var(--shadow);
}
.voice{background:#F7F0FF;border:2px solid rgba(185,138,224,.5);border-radius:14px;
  padding:11px 14px;font-size:13px;font-weight:700;color:#7A52AC;width:100%}
.note{font-family:"Yomogi",cursive;font-size:13px;color:var(--dim);line-height:1.7}
.warn{
  font-size:13px;color:#8A5CBE;background:#F9F3FE;border:2px dashed rgba(185,138,224,.6);
  border-radius:14px;padding:9px 12px;margin:10px 0;font-weight:700;
}

#toast{
  position:fixed;left:50%;bottom:110px;transform:translateX(-50%) translateY(8px);z-index:60;
  background:var(--ink);color:#FFF4EC;border-radius:999px;padding:10px 20px;font-size:14px;font-weight:700;
  opacity:0;transition:opacity .25s,transform .25s;pointer-events:none;max-width:90vw;text-align:center;
  box-shadow:0 10px 24px -12px rgba(74,49,56,.9);
}
#toast.on{opacity:1;transform:translateX(-50%) translateY(0)}
#q{
  position:fixed;right:14px;bottom:110px;z-index:40;font-size:12px;font-weight:700;color:var(--ink);
  background:var(--butter);border-radius:999px;padding:5px 13px;box-shadow:0 3px 0 rgba(74,49,56,.12);
}

/* ---------- 送信したときの紙吹雪 ---------- */
#confetti{position:fixed;inset:0;z-index:70;pointer-events:none;overflow:hidden}
#confetti i{
  position:absolute;top:-16px;width:9px;height:13px;border-radius:2px;
  animation:fall 1.5s cubic-bezier(.3,.6,.5,1) forwards;
}
@keyframes fall{
  0%{transform:translateY(0) rotate(0);opacity:1}
  100%{transform:translateY(104vh) rotate(640deg);opacity:0}
}

@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
}