*{box-sizing:border-box}
:root{
  --bg:#08090d;
  --panel:#141720;
  --panel-soft:#1b1f2a;
  --text:#f5f0e8;
  --muted:#9ba0ae;
  --red:#d94b45;
  --green:#9fbd3b;
  --line:rgba(255,255,255,.09);
}
html,body{margin:0;min-height:100%;font-family:'Gowun Dodum',sans-serif;background:var(--bg);color:var(--text)}
body{min-height:100dvh;overflow-x:hidden;background:
  radial-gradient(circle at 50% 26%,rgba(83,91,119,.18),transparent 34%),
  radial-gradient(circle at 16% 86%,rgba(107,44,47,.14),transparent 30%),
  linear-gradient(180deg,#0c0e14 0%,#07080b 100%)}
button,textarea{font:inherit}
button{touch-action:manipulation}
body.modal-open{overflow:hidden}

.app-shell{position:relative;min-height:100dvh;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:calc(28px + env(safe-area-inset-top)) 18px calc(30px + env(safe-area-inset-bottom));isolation:isolate}
.app-shell::before{content:'';position:absolute;inset:0;z-index:-1;pointer-events:none;background:radial-gradient(circle at center,rgba(255,255,255,.025) 0 1px,transparent 1.6px);background-size:28px 28px;mask-image:linear-gradient(to bottom,transparent,black 18%,black 80%,transparent)}
.quiet-copy{margin:0 0 34px;color:#c8c9d0;font-size:15px;letter-spacing:.06em;text-align:center;opacity:.86}

.bookshelf{width:min(100%,460px);display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px;align-items:end}
.book-button{appearance:none;border:0;background:transparent;color:var(--text);padding:0;min-width:0;cursor:pointer;text-align:center;transition:transform .25s ease,filter .25s ease}
.book-button:active{transform:translateY(5px) scale(.98)}
.book-button:focus-visible{outline:2px solid #fff;outline-offset:8px;border-radius:20px}
.book-visual{position:relative;display:block;width:100%;aspect-ratio:.78;margin:0 auto;filter:drop-shadow(0 18px 20px rgba(0,0,0,.42))}
.book-visual::after{content:'';position:absolute;left:14%;right:8%;bottom:7%;height:12%;border-radius:50%;background:rgba(0,0,0,.38);filter:blur(9px);z-index:-1}
.book-visual img{display:block;width:100%;height:100%;object-fit:contain;transition:transform .3s ease}
.book-button:hover .book-visual img{transform:translateY(-4px) rotate(-1deg)}
.book-visual strong{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);display:grid;place-items:center;width:68%;min-height:44px;padding:8px 6px;border:1px solid rgba(255,255,255,.34);border-radius:8px;background:rgba(8,9,13,.76);backdrop-filter:blur(5px);font-size:clamp(18px,5vw,24px);font-weight:400;letter-spacing:-.02em;text-shadow:0 2px 8px #000}
.discard-book .book-visual strong{box-shadow:0 0 22px rgba(217,75,69,.18)}
.success-book .book-visual strong{box-shadow:0 0 22px rgba(159,189,59,.16)}
.book-caption{display:block;margin-top:12px;color:var(--muted);font-size:12px;letter-spacing:.06em}

.trash-button{appearance:none;border:0;background:transparent;color:#8c909b;display:flex;flex-direction:column;align-items:center;gap:5px;margin-top:38px;padding:8px 16px;cursor:pointer;opacity:.75;transition:opacity .2s ease,transform .2s ease}
.trash-button:hover,.trash-button:focus-visible{opacity:1}
.trash-button:active{transform:scale(.94)}
.trash-button img{display:block;width:56px;height:56px;object-fit:contain;filter:grayscale(1) brightness(1.55) drop-shadow(0 7px 8px rgba(0,0,0,.4))}
.trash-button span{font-size:12px}

.editor-layer{position:fixed;inset:0;z-index:30;padding:calc(18px + env(safe-area-inset-top)) 14px calc(18px + env(safe-area-inset-bottom));display:grid;place-items:center;background:rgba(3,4,8,.82);backdrop-filter:blur(12px)}
.editor-layer[hidden]{display:none}
.editor-card{position:relative;width:min(100%,480px);max-height:88dvh;overflow:auto;border:1px solid var(--line);border-radius:26px;background:linear-gradient(180deg,rgba(28,32,43,.98),rgba(15,17,24,.99));box-shadow:0 28px 80px rgba(0,0,0,.55);padding:26px 20px 22px}
.editor-card.discard-mode{box-shadow:0 28px 80px rgba(0,0,0,.55),0 0 0 1px rgba(217,75,69,.08) inset}
.editor-card.success-mode{box-shadow:0 28px 80px rgba(0,0,0,.55),0 0 0 1px rgba(159,189,59,.08) inset}
.close-button{position:absolute;right:14px;top:12px;width:42px;height:42px;border:0;border-radius:50%;background:rgba(255,255,255,.06);color:#d9dae0;font-size:30px;line-height:1;cursor:pointer}
.editor-kicker{margin:0 48px 6px 0;color:var(--muted);font-size:12px;letter-spacing:.08em}
.editor-card h1{margin:0 48px 20px 0;font-size:31px;font-weight:400}
.editor-card textarea{display:block;width:100%;height:188px;resize:none;border:1px solid var(--line);border-radius:18px;outline:0;padding:16px;background:#0c0e14;color:#f4f0e8;font:21px/1.55 'Nanum Pen Script',cursive;box-shadow:inset 0 8px 20px rgba(0,0,0,.28)}
.editor-card textarea:focus{border-color:rgba(255,255,255,.25);box-shadow:0 0 0 3px rgba(255,255,255,.04),inset 0 8px 20px rgba(0,0,0,.28)}
.editor-actions{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:14px}
.editor-actions span{color:var(--muted);font-size:12px}
.editor-actions button{border:0;border-radius:999px;padding:12px 17px;color:#fff;cursor:pointer;font-size:14px;box-shadow:0 5px 0 rgba(0,0,0,.28)}
.discard-mode .editor-actions button{background:#a83f3c}
.success-mode .editor-actions button{background:#657c2d}
.success-history{margin-top:24px;padding-top:20px;border-top:1px solid var(--line)}
.success-history h2{margin:0 0 12px;font-size:15px;font-weight:400;color:#dfe5c7}
.success-list-empty{margin:0;color:var(--muted);font-size:13px}
.success-entry{margin:0 0 9px;padding:12px 13px;border:1px solid rgba(159,189,59,.12);border-radius:14px;background:rgba(159,189,59,.055)}
.success-entry time{display:block;margin-bottom:5px;color:#9da68b;font-size:10px}
.success-entry p{margin:0;white-space:pre-wrap;font-size:14px;line-height:1.55;color:#e9ecd9}

.toast{position:fixed;z-index:60;left:50%;top:calc(18px + env(safe-area-inset-top));transform:translate(-50%,-18px);width:max-content;max-width:calc(100% - 28px);padding:11px 17px;border:1px solid var(--line);border-radius:999px;background:rgba(22,25,34,.96);color:#fff;text-align:center;font-size:13px;opacity:0;pointer-events:none;transition:.3s ease;box-shadow:0 12px 30px rgba(0,0,0,.35)}
.toast.show{opacity:1;transform:translate(-50%,0)}
.paper-ball{position:fixed;z-index:55;width:34px;height:34px;border-radius:45% 55% 48% 52%;background:#eee8dc;box-shadow:inset 7px -5px 0 #c8c0b2,0 5px 12px rgba(0,0,0,.3);transition:all .72s cubic-bezier(.2,.9,.4,1)}

@media(max-width:370px){
  .app-shell{padding-left:12px;padding-right:12px}
  .bookshelf{gap:12px}
  .book-visual strong{font-size:17px;min-height:40px}
  .quiet-copy{margin-bottom:24px;font-size:13px}
  .trash-button{margin-top:28px}
  .editor-card{padding:24px 16px 20px}
  .editor-card textarea{height:165px;font-size:19px}
}

@media(min-width:700px){
  .quiet-copy{font-size:16px;margin-bottom:42px}
  .bookshelf{width:min(100%,560px);gap:48px}
  .book-visual strong{font-size:26px}
  .trash-button{margin-top:46px}
  .editor-card{padding:30px 28px 26px}
}