/* デジタル書斎ライブ版 — 木目棚（build-shelf.py 踏襲）＋表紙ピッカー */
:root{--bg:#efe9dd;--fg:#2c2620;--sub:#8a8070;--accent:#8a4b2f;--card:#fff;--wood1:#6b4a2e;--wood2:#4f3620}
:root[data-theme="dark"]{--bg:#171410;--fg:#ddd5c8;--sub:#8a8070;--accent:#c98a5f;--card:#221d17;--wood1:#3a2818;--wood2:#241810}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
body{margin:0;background:var(--bg);color:var(--fg);font-family:-apple-system,BlinkMacSystemFont,"Hiragino Kaku Gothic ProN","Yu Gothic UI","Noto Sans JP",sans-serif;padding-bottom:env(safe-area-inset-bottom)}

header{position:sticky;top:0;z-index:10;background:color-mix(in srgb,var(--bg) 90%,transparent);backdrop-filter:blur(10px);border-bottom:1px solid rgba(0,0,0,.12);padding:env(safe-area-inset-top) 0 0}
.bar{display:flex;align-items:center;gap:.5rem;padding:.6rem max(14px,env(safe-area-inset-left))}
.title{flex:1;font-weight:800;font-size:1.05rem;letter-spacing:.03em}
.title small{font-weight:400;color:var(--sub);font-size:.7rem;margin-left:.4rem}
.iconbtn{background:rgba(0,0,0,.06);border:none;color:var(--fg);border-radius:8px;padding:.4rem .6rem;font-size:.9rem;cursor:pointer}

main{max-width:60rem;margin:0 auto;padding:1rem max(12px,env(safe-area-inset-left)) 4rem}
.legend{font-size:.72rem;color:var(--sub);background:rgba(0,0,0,.05);border-radius:8px;padding:.55rem .8rem;margin:0 0 1.3rem;display:flex;gap:1rem;flex-wrap:wrap}
.legend b{color:var(--accent)}

.genre{margin:0 0 2.2rem}
.genre h2{font-size:1rem;letter-spacing:.05em;margin:0 0 .2rem;padding:0 .3rem;display:flex;align-items:baseline;gap:.5rem}
.genre h2 .cnt{font-size:.72rem;color:var(--sub);font-weight:400}
.row{padding:.6rem .5rem 0;border-radius:6px 6px 0 0}
.books{display:grid;grid-template-columns:repeat(auto-fill,minmax(110px,1fr));gap:.7rem;padding:0 .3rem .7rem}
.plank{height:14px;background:linear-gradient(180deg,var(--wood1),var(--wood2));border-radius:2px;box-shadow:0 6px 10px -4px rgba(0,0,0,.5);margin:0 0 1.6rem}

.book{cursor:pointer;position:relative;transition:transform .15s}
.book:active{transform:scale(.96)}
.book.pend{opacity:.6}
.covwrap{position:relative}
.book .cov{width:100%;display:block;border-radius:2px 4px 4px 2px;background:#ccc;box-shadow:0 4px 8px -2px rgba(0,0,0,.45)}
.book .cov.noimg{aspect-ratio:1/1.45;display:flex;align-items:center;justify-content:center;color:var(--sub);font-size:.72rem;background:repeating-linear-gradient(45deg,#ddd,#ddd 6px,#d2d2d2 6px,#d2d2d2 12px)}
.badge{position:absolute;top:6px;right:6px;font-size:.6rem;padding:.12rem .4rem;border-radius:99px;font-weight:700;color:#fff;background:var(--accent)}
.editbtn{position:absolute;bottom:6px;right:6px;width:26px;height:26px;border:none;border-radius:50%;background:rgba(0,0,0,.6);color:#fff;font-size:.8rem;cursor:pointer;display:none;align-items:center;justify-content:center;line-height:1}
.cap{font-size:.7rem;line-height:1.4;margin-top:.35rem;padding:0 .15rem}
.cap .au{color:var(--sub);font-size:.64rem}

/* 認証済みのときだけ編集系を表示 */
body[data-authed="1"] .editbtn{display:flex}
.authonly{display:none}
body[data-authed="1"] .authonly{display:inline}

/* オーバーレイ（ピッカー／ログイン共通・ボトムシート） */
.overlay{position:fixed;inset:0;z-index:50;background:rgba(0,0,0,.5);display:flex;align-items:flex-end;justify-content:center}
.overlay[hidden]{display:none}
.sheet{background:var(--card);color:var(--fg);width:100%;max-width:34rem;border-radius:16px 16px 0 0;padding:1rem max(14px,env(safe-area-inset-left)) calc(1.2rem + env(safe-area-inset-bottom));box-shadow:0 -8px 30px rgba(0,0,0,.35);animation:slideup .2s ease}
@keyframes slideup{from{transform:translateY(100%)}to{transform:translateY(0)}}
.sheet-head{display:flex;align-items:center;justify-content:space-between;font-weight:800;font-size:1rem;margin-bottom:.8rem}
.hint{font-size:.78rem;color:var(--sub);margin:.2rem 0 .8rem;line-height:1.6}

/* 表紙候補（ピッカー） */
.cands{display:grid;grid-template-columns:repeat(3,1fr);gap:.7rem}
.cand{text-align:center;background:rgba(0,0,0,.04);border-radius:10px;padding:.5rem;cursor:pointer;border:2px solid transparent;transition:transform .12s}
.cand:active{transform:scale(.96)}
.cand.active{border-color:var(--accent);background:color-mix(in srgb,var(--accent) 14%,transparent)}
.cand img{width:100%;border-radius:4px;box-shadow:0 3px 8px rgba(0,0,0,.3);display:block}
.cand .lab{font-size:.72rem;margin-top:.45rem;font-weight:700}
.cand .lab small{display:block;font-weight:400;color:var(--sub);font-size:.64rem}

/* ログイン入力 */
#login input{width:100%;padding:.7rem;font-size:1rem;border:1px solid rgba(0,0,0,.2);border-radius:10px;margin-bottom:.7rem;background:var(--bg);color:var(--fg)}
.primary{width:100%;padding:.75rem;font-size:1rem;font-weight:700;color:#fff;background:var(--accent);border:none;border-radius:10px;cursor:pointer}
.msg{font-size:.78rem;margin-top:.6rem;min-height:1.1em}
.msg.err{color:#c0392b}
.msg.ok{color:#2e7d32}