:root{
  --bg:#f6f7fb; --card:#fff; --ink:#1f2330; --muted:#8a90a2; --line:#e7e9f0;
  --brand:#6c5ce7; --brand-soft:#efeaff; --shadow:0 6px 24px rgba(30,32,60,.08);
  --want:#f0a23b; --reading:#3b9df0; --done:#27ae60;
}
*{box-sizing:border-box}
body{margin:0;font-family:-apple-system,"PingFang SC","Microsoft YaHei",Segoe UI,Roboto,sans-serif;
  background:var(--bg);color:var(--ink);line-height:1.5}
.hidden{display:none!important}

.topbar{display:flex;align-items:center;justify-content:space-between;padding:18px 28px;
  background:linear-gradient(120deg,#6c5ce7,#8e7bff);color:#fff}
.brand{display:flex;align-items:center;gap:14px}
.logo{font-size:34px}
.topbar h1{margin:0;font-size:20px;font-weight:700}
.topbar .sub{margin:2px 0 0;font-size:12px;opacity:.85}

.btn{border:none;border-radius:10px;padding:9px 16px;font-size:14px;cursor:pointer;font-weight:600;transition:.15s}
.btn.primary{background:var(--brand);color:#fff}
.btn.primary:hover{filter:brightness(1.06)}
.btn.ghost{background:#eef0f6;color:var(--ink)}
.btn.ghost:hover{background:#e3e6f0}
.topbar .btn.primary{background:#fff;color:var(--brand)}
.topbar-actions{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.topbar .btn.admin{background:rgba(255,255,255,.16);color:#fff}
.topbar .btn.admin:hover{background:rgba(255,255,255,.3)}
.topbar .btn.ghost2{background:rgba(255,255,255,.16);color:#fff;padding:7px 12px}
.topbar .btn.ghost2:hover{background:rgba(255,255,255,.3)}
.user-area{display:flex;align-items:center;gap:8px;background:rgba(255,255,255,.14);
  padding:5px 6px 5px 12px;border-radius:999px}
.user-chip{cursor:pointer;color:#fff;font-size:13px;user-select:none}
.user-chip:hover{text-decoration:underline}
.card-foot.read-only{justify-content:center;color:var(--muted);font-size:12px}

.auth-card{width:min(420px,100%)}
.auth-tabs{display:flex;gap:4px;background:#f1f2f8;border-radius:10px;padding:4px}
.auth-tabs .tab{border:none;background:none;padding:7px 20px;border-radius:8px;font-size:14px;
  font-weight:600;color:var(--muted);cursor:pointer}
.auth-tabs .tab.on{background:#fff;color:var(--brand);box-shadow:0 2px 8px rgba(30,32,60,.1)}
.auth-hint{font-size:13px;color:var(--danger);margin:0;min-height:18px}
#accessModal .access-body{text-align:center;padding:26px 30px 6px}
#accessModal .access-icon{font-size:46px;line-height:1}
#accessModal h3{margin:12px 0 8px;font-size:17px}
#accessModal .access-body p{color:#565b6b;font-size:14px;margin:6px 0;line-height:1.7}
#accessModal .access-body em{font-style:normal;font-weight:600}
#accessModal .access-tip{background:var(--brand-soft);color:var(--brand);border-radius:10px;padding:10px 14px;font-size:13px;margin-top:14px!important}
#accessModal .modal-foot{padding:16px 22px 20px;justify-content:center}

.stats{display:grid;grid-template-columns:repeat(5,1fr);gap:14px;padding:22px 28px 4px}
.stat{background:var(--card);border-radius:14px;padding:16px 18px;box-shadow:var(--shadow)}
.stat .n{font-size:26px;font-weight:800}
.stat .l{font-size:13px;color:var(--muted);margin-top:2px}
.stat.total .n{color:var(--brand)}
.stat.want .n{color:var(--want)}
.stat.reading .n{color:var(--reading)}
.stat.done .n{color:var(--done)}

.toolbar{display:flex;gap:10px;flex-wrap:wrap;padding:18px 28px}
.tb-spacer{margin-left:auto}
.input{border:1px solid var(--line);border-radius:10px;padding:9px 12px;font-size:14px;background:#fff;outline:none}
.input:focus{border-color:var(--brand)}
.search{flex:1;min-width:180px}

.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:18px;padding:8px 28px 40px}
.card{background:var(--card);border-radius:14px;box-shadow:var(--shadow);overflow:hidden;display:flex;flex-direction:column}
.card-top{display:flex;gap:14px;padding:16px}
.cover{width:74px;height:104px;object-fit:cover;border-radius:8px;background:#eef0f6;flex:none}
.cover-ph{width:74px;height:104px;border-radius:8px;background:var(--brand-soft);color:var(--brand);
  display:flex;align-items:center;justify-content:center;font-size:34px;font-weight:800;flex:none}
.card-meta{flex:1;min-width:0}
.card-meta h3{margin:0 0 4px;font-size:16px}
.card-meta .au{color:var(--muted);font-size:13px;margin-bottom:8px}
.badges{display:flex;gap:6px;flex-wrap:wrap}
.badge{font-size:12px;padding:2px 9px;border-radius:999px;font-weight:600}
.badge.cat{background:#eef0f6;color:#5a6072}
.badge.want{background:#fdf0e0;color:var(--want)}
.badge.reading{background:#e6f2fd;color:var(--reading)}
.badge.done{background:#e6f7ee;color:var(--done)}
.stars{color:#f5b50a;font-size:13px;margin-top:8px;letter-spacing:1px}
.dates{font-size:12px;color:var(--muted);margin-top:6px}
.notes{font-size:13px;color:#565b6b;padding:0 16px 12px;white-space:pre-wrap;word-break:break-word}
.card-foot{display:flex;gap:8px;padding:12px 16px;border-top:1px solid var(--line);margin-top:auto}
.card-foot .btn{flex:1;padding:7px;font-size:13px}

.modal{position:fixed;inset:0;background:rgba(20,22,40,.45);display:flex;align-items:center;
  justify-content:center;padding:20px;z-index:50}
.modal-card{background:#fff;border-radius:16px;width:min(620px,100%);max-height:90vh;overflow:auto;box-shadow:var(--shadow)}
.modal-head{display:flex;align-items:center;justify-content:space-between;padding:18px 22px;border-bottom:1px solid var(--line)}
.modal-head h2{margin:0;font-size:18px}
.x{border:none;background:none;font-size:20px;cursor:pointer;color:var(--muted)}
.form{padding:18px 22px;display:flex;flex-direction:column;gap:14px}
.row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.row label,.form label{display:flex;flex-direction:column;gap:6px;font-size:13px;font-weight:600;color:#444}
.form input,.form select,.form textarea{border:1px solid var(--line);border-radius:9px;padding:9px 11px;font-size:14px;font-weight:400;outline:none;font-family:inherit}
.form input:focus,.form select:focus,.form textarea:focus{border-color:var(--brand)}
.cover-block{border:1px dashed var(--line);border-radius:12px;padding:14px}
.cover-line{display:flex;gap:10px;align-items:flex-end}
.cover-line label{flex:1}
.cover-cands{display:flex;gap:10px;flex-wrap:wrap;margin-top:12px}
.cover-opt{width:62px;height:88px;object-fit:cover;border-radius:7px;border:2px solid transparent;cursor:pointer;background:#eef0f6}
.cover-opt.sel{border-color:var(--brand);box-shadow:0 0 0 2px var(--brand-soft)}
.cover-cap{font-size:12px;color:var(--muted);margin-top:6px}
.cover-hint{font-size:13px;color:var(--muted);margin-top:8px}
.info-cands{display:flex;flex-direction:column;gap:8px;margin-top:12px}
.info-opt{display:flex;gap:12px;border:1px solid var(--line);border-radius:10px;padding:9px;cursor:pointer;transition:.12s;background:#fff}
.info-opt:hover{border-color:var(--brand)}
.info-opt.sel{border-color:var(--brand);box-shadow:0 0 0 2px var(--brand-soft)}
.info-cover{width:44px;height:62px;object-fit:cover;border-radius:6px;background:#eef0f6;flex:none}
.info-meta{flex:1;min-width:0;font-size:12px;color:#565b6b}
.info-meta b{font-size:13px;color:var(--ink)}
.info-meta .au{color:var(--muted);margin-left:6px;font-size:12px}
.info-meta .cat{display:inline-block;background:var(--brand-soft);color:var(--brand);border-radius:999px;padding:1px 9px;font-size:11px;margin:4px 0;font-weight:600}
.info-meta p{margin:0;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.modal-foot{display:flex;justify-content:flex-end;gap:10px;margin-top:4px}

.toast{position:fixed;left:50%;bottom:30px;transform:translateX(-50%);background:#1f2330;color:#fff;
  padding:11px 20px;border-radius:10px;font-size:14px;box-shadow:var(--shadow);z-index:60}
.empty{text-align:center;color:var(--muted);padding:50px}

@media(max-width:720px){
  .stats{grid-template-columns:repeat(2,1fr)}
  .row{grid-template-columns:1fr}
}