:root{
  --bg:#eef5e8; --panel:#f7fbf3; --card:#fff; --sage:#c5dfb4; --dark:#2b5a46; --dark2:#21473a;
  --orange:#f7b184; --ink:#1f2a24; --mute:#66756b; --line:#dbe7d2; --star:#f2a43a; --red:#b3402f;
  --shadow:0 2px 10px rgba(43,90,70,.12); --r:16px;
}
@media (prefers-color-scheme:dark){
  :root{--bg:#141c17;--panel:#1b261f;--card:#212e26;--sage:#2d4a3a;--dark:#7fc9a2;--dark2:#6ab68d;--orange:#d98c5b;--ink:#e7f0e9;--mute:#9db1a4;--line:#2e4136;--shadow:0 2px 10px rgba(0,0,0,.4)}
  .btn.dark{color:#10231a}.topbar{color:#e7f0e9}
}
*{box-sizing:border-box}
html,body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.4 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;-webkit-tap-highlight-color:transparent}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3{margin:0}
.topbar{position:sticky;top:0;z-index:20;display:flex;align-items:center;justify-content:space-between;background:var(--sage);padding:14px 22px;padding-top:max(14px,env(safe-area-inset-top))}
.topbar h1{font-size:1.35rem;font-weight:400;letter-spacing:.3px}.topbar h1 strong{font-weight:800}
.top-actions{display:flex;align-items:center;gap:10px}
.sync{font-size:.8rem;color:var(--mute)}.sync.ok{color:#2f8f4e}.sync.err{color:var(--red)}
.icon-btn{border:0;background:rgba(255,255,255,.5);width:40px;height:40px;border-radius:50%;font-size:1.2rem;cursor:pointer}
.layout{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:18px;padding:18px 22px}
.card{background:var(--panel);border-radius:var(--r);box-shadow:var(--shadow);padding:18px}
.import-card{text-align:center;margin-bottom:18px}
.import-card h2{font-size:1.05rem;letter-spacing:.5px;margin-bottom:12px}
.btn-row{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}.btn-row.col{flex-direction:column;gap:10px}
.btn{border:0;border-radius:12px;padding:14px 22px;min-height:48px;font-weight:600;cursor:pointer;background:var(--card);box-shadow:var(--shadow);transition:transform .08s}
.btn:active{transform:scale(.97)}.btn:disabled{opacity:.45;cursor:not-allowed}
.btn.dark{background:var(--dark);color:#fff}.btn.orange{background:var(--orange);color:#3b2310}.btn.light{background:var(--sage);color:var(--dark2)}
.btn.small{padding:10px 14px;min-height:42px;font-size:.92rem}.btn.wide{width:100%}.btn.danger{color:var(--red)}
.import-card .btn{flex:1 1 220px;max-width:340px;font-size:1.05rem}
.hint{color:var(--mute);font-size:.85rem;margin:10px 0 0}
.lib-head{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;margin:6px 0 12px}
.lib-head h2{font-size:1.05rem;letter-spacing:.5px}.lib-head small{color:var(--mute);font-weight:400}
.lib-tools{display:flex;gap:8px;flex-wrap:wrap}
.lib-tools input,.lib-tools select,.dlg input,.tool select,.tool input[type=text],.detail input,.detail select,.detail textarea{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:9px 11px;min-height:42px}
.lib-tools input{min-width:200px}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(138px,1fr));gap:14px}
.book{background:var(--card);border-radius:14px;box-shadow:var(--shadow);padding:10px;cursor:pointer;display:flex;flex-direction:column;gap:6px;border:2px solid transparent;text-align:left}
.book.sel{border-color:var(--dark)}
.cover{aspect-ratio:2/3;border-radius:6px;overflow:hidden;background:var(--sage);display:flex;align-items:center;justify-content:center;position:relative}
.cover img{width:100%;height:100%;object-fit:cover;display:block}
.cover .ph{padding:8px;text-align:center;font-weight:700;color:#fff;font-size:.85rem;line-height:1.2;word-break:break-word}
.book .t{font-size:.88rem;font-weight:600;line-height:1.2;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.book .a{font-size:.78rem;color:var(--mute);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.chips{display:flex;gap:5px;flex-wrap:wrap}
.chip{font-size:.72rem;font-weight:600;padding:3px 10px;border-radius:99px;background:var(--sage);color:var(--ink)}
.chip.saga{background:var(--orange);color:#4a2a10}.chip.reading{background:#cfe3f5;color:#1e3f5c}.chip.want{background:#eee2c0;color:#5c4a14}
.empty{text-align:center;color:var(--mute);padding:30px 10px}
.row-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:16px}
.link{border:0;background:none;color:var(--dark);text-decoration:underline;cursor:pointer;padding:0}
.detail{position:sticky;top:78px;align-self:start;max-height:calc(100vh - 96px);overflow:auto}
.close-sheet{display:none}
.d-cover{width:46%;max-width:170px;margin:0 auto 12px;display:block}
.detail h3{font-size:1.25rem;margin-bottom:2px}
.detail .au{color:var(--mute);margin-bottom:10px}
.detail label{display:block;font-size:.78rem;color:var(--mute);margin-top:10px}
.detail input,.detail select,.detail textarea{width:100%;margin-top:3px}
.detail textarea{min-height:130px;resize:vertical;line-height:1.35}
.two{display:grid;grid-template-columns:1fr 90px;gap:8px}
.stars{display:flex;gap:2px;margin-top:10px}.stars button{border:0;background:none;font-size:1.8rem;line-height:1;cursor:pointer;color:#c9cfc6;padding:2px 3px}.stars button.on{color:var(--star)}
.saga-line{font-weight:700;font-size:.82rem;margin-top:12px;text-transform:uppercase;letter-spacing:.3px}
.tools{margin:0 22px 22px}.tools h2{text-align:center;font-size:1.05rem;letter-spacing:.5px;margin-bottom:12px}
.tools-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.tool{background:var(--card);border-radius:14px;padding:14px;box-shadow:var(--shadow)}
.tool h3{font-size:.85rem;letter-spacing:.4px;margin-bottom:10px}
.sel-row{display:flex;gap:10px;margin-bottom:10px}.sel-row label{flex:1;font-size:.85rem}.sel-row select{width:100%;margin-top:3px;text-transform:uppercase}
.file-row{display:flex;gap:8px;margin-bottom:10px}.file-row input{flex:1;min-width:0}
.kstate{text-align:center;margin:0 0 6px;font-size:.9rem}.kstate b.on{color:#2f8f4e}.kstate b.off{color:var(--red)}
.kindle-art svg{width:100%;max-height:90px;display:block;margin:0 auto 10px}
.klist{list-style:none;margin:10px 0 0;padding:0;font-size:.85rem}.klist li{display:flex;justify-content:space-between;gap:8px;padding:5px 0;border-bottom:1px solid var(--line)}
.tabbar{display:none}
dialog{border:0;border-radius:var(--r);padding:0;max-width:min(480px,94vw);width:100%;background:var(--panel);color:var(--ink);box-shadow:0 10px 40px rgba(0,0,0,.35)}
dialog::backdrop{background:rgba(0,0,0,.45)}
.dlg{padding:20px}.dlg h2{margin-bottom:10px}.dlg label{display:block;font-size:.85rem;color:var(--mute);margin-top:10px}.dlg input{width:100%;margin-top:3px}.dlg .btn-row{margin-top:14px}
code{background:var(--line);padding:1px 5px;border-radius:5px}
/* Tablet vertical / móvil */
@media (max-width:980px){
  .layout{grid-template-columns:1fr}
  .detail{position:fixed;left:0;right:0;bottom:0;top:auto;max-height:82vh;z-index:40;border-radius:20px 20px 0 0;transform:translateY(105%);transition:transform .22s;padding-bottom:calc(18px + env(safe-area-inset-bottom))}
  .detail.open{transform:none}
  .close-sheet{display:block;position:absolute;right:10px;top:8px;border:0;background:var(--sage);width:36px;height:36px;border-radius:50%;cursor:pointer;z-index:2}
  .tools{margin:0 22px 90px}
}
@media (max-width:700px){
  .topbar{padding:12px 14px}.topbar h1{font-size:1.05rem}.topbar h1 span{display:none}
  .layout{padding:12px 12px}.tools{margin:0 12px 90px}
  .tools-grid{grid-template-columns:1fr}
  .grid{grid-template-columns:repeat(auto-fill,minmax(108px,1fr));gap:10px}
  .lib-tools{width:100%}.lib-tools input{flex:1 1 100%}.lib-tools select{flex:1}
  .tabbar{display:flex;position:fixed;left:0;right:0;bottom:0;z-index:30;background:var(--panel);border-top:1px solid var(--line);padding-bottom:env(safe-area-inset-bottom)}
  .tabbar button{flex:1;border:0;background:none;padding:8px 0;font-size:1.3rem;display:flex;flex-direction:column;align-items:center;gap:0;cursor:pointer}
  .tabbar button span{font-size:.72rem;color:var(--mute)}.tabbar button.on span{color:var(--dark);font-weight:700}
  body[data-tab=lib] .tools{display:none}
  body[data-tab=tools] .layout{display:none}
}