:root{
  --bg:#f4f7f6;--surface:#ffffff;--surface-2:#eef4f2;--text:#17211e;--muted:#68766f;
  --primary:#1f6f5f;--primary-2:#174f45;--line:#dfe8e4;--danger:#b42318;--warning:#9a6700;
  --shadow:0 8px 28px rgba(20,48,40,.08);--radius:18px;
}
:root[data-theme="dark"]{
  --bg:#111816;--surface:#18211e;--surface-2:#202c28;--text:#edf5f1;--muted:#9eb0a8;
  --primary:#65bfa9;--primary-2:#8bd2c0;--line:#2b3b35;--danger:#ff8e86;--warning:#f0c45f;
  --shadow:0 10px 32px rgba(0,0,0,.22);
}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;background:var(--bg);color:var(--text)}
a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}img{max-width:100%;display:block}
.app-shell{min-height:100vh}.sidebar{position:fixed;inset:0 auto 0 0;width:260px;background:var(--surface);border-right:1px solid var(--line);padding:22px 16px;display:flex;flex-direction:column;z-index:30}
.brand{display:flex;gap:12px;align-items:center;padding:0 8px 20px}.brand-mark{width:42px;height:42px;border-radius:14px;background:linear-gradient(135deg,var(--primary),var(--primary-2));color:white;display:grid;place-items:center;font-weight:800;font-size:20px}
.brand strong{display:block;font-size:14px;line-height:1.25}.brand span{display:block;color:var(--muted);font-size:11px;margin-top:3px}
.sidebar nav{display:grid;gap:6px;margin-top:8px}.sidebar nav a,.sidebar-footer a,.theme-toggle{display:flex;align-items:center;gap:10px;padding:11px 12px;border-radius:12px;color:var(--muted);border:0;background:transparent;cursor:pointer;width:100%;text-align:left}
.sidebar nav a:hover,.sidebar nav a.active,.sidebar-footer a:hover,.theme-toggle:hover{background:var(--surface-2);color:var(--text)}
.sidebar nav a.active{font-weight:700}.nav-dot{width:8px;height:8px;border-radius:50%;background:currentColor;opacity:.55}.sidebar-footer{margin-top:auto;padding-top:18px;border-top:1px solid var(--line)}
.main-wrap{margin-left:260px;min-height:100vh}.topbar{height:76px;position:sticky;top:0;background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:blur(14px);display:flex;align-items:center;justify-content:space-between;padding:0 28px;border-bottom:1px solid var(--line);z-index:20}
.topbar-title strong{display:block;font-size:17px}.topbar-title span{display:block;color:var(--muted);font-size:12px;margin-top:2px}
.user-chip{display:flex;align-items:center;gap:10px}.avatar{width:38px;height:38px;border-radius:12px;background:var(--surface-2);display:grid;place-items:center;font-weight:800;color:var(--primary)}.user-chip strong{display:block;font-size:13px}.user-chip span{display:block;font-size:11px;color:var(--muted)}
.mobile-menu{display:none;border:0;background:var(--surface);color:var(--text);border-radius:10px;padding:9px 11px}.content{padding:28px;max-width:1500px;margin:0 auto}
.page-head{display:flex;justify-content:space-between;gap:16px;align-items:flex-end;margin-bottom:22px}.page-head h1{margin:0;font-size:28px;letter-spacing:-.03em}.page-head p{margin:7px 0 0;color:var(--muted)}.actions{display:flex;gap:10px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid var(--line);background:var(--surface);color:var(--text);padding:10px 14px;border-radius:12px;cursor:pointer;font-weight:650}.btn:hover{transform:translateY(-1px);box-shadow:var(--shadow)}.btn.primary{background:var(--primary);border-color:var(--primary);color:white}.btn.danger{color:var(--danger);border-color:color-mix(in srgb,var(--danger) 30%,var(--line))}.btn.small{padding:7px 10px;border-radius:10px;font-size:12px}
.grid{display:grid;gap:16px}.grid.stats{grid-template-columns:repeat(4,minmax(0,1fr))}.stat{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow)}.stat span{color:var(--muted);font-size:13px}.stat strong{display:block;font-size:28px;margin-top:8px;letter-spacing:-.03em}.stat small{display:block;color:var(--muted);margin-top:6px}
.panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden}.panel-head{padding:18px 20px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:12px}.panel-head h2{font-size:16px;margin:0}.panel-body{padding:20px}
.table-wrap{overflow:auto}table{width:100%;border-collapse:collapse;min-width:720px}th,td{padding:13px 14px;border-bottom:1px solid var(--line);text-align:left;vertical-align:middle}th{font-size:12px;text-transform:uppercase;letter-spacing:.04em;color:var(--muted);background:var(--surface-2)}td{font-size:13px}.table-actions{display:flex;gap:6px;flex-wrap:wrap}.badge{display:inline-flex;padding:5px 9px;border-radius:999px;font-size:11px;font-weight:750;background:var(--surface-2)}.badge.success{color:#137a4b;background:#e7f7ef}.badge.warning{color:#8a6100;background:#fff4d6}.badge.danger{color:#a01912;background:#fdecea}.badge.info{color:#175cd3;background:#eaf2ff}.badge.neutral{color:var(--muted)}
[data-theme="dark"] .badge.success{background:#143c2c;color:#8de2b7}[data-theme="dark"] .badge.warning{background:#403516;color:#f0cf76}[data-theme="dark"] .badge.danger{background:#41201e;color:#ffaaa4}[data-theme="dark"] .badge.info{background:#172d4d;color:#9bc1ff}
.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.field{display:grid;gap:7px}.field.full{grid-column:1/-1}.field label{font-size:13px;font-weight:700}.field small{color:var(--muted)}.input,.select,.textarea{width:100%;border:1px solid var(--line);background:var(--surface);color:var(--text);border-radius:12px;padding:11px 12px;outline:none}.textarea{min-height:110px;resize:vertical}.input:focus,.select:focus,.textarea:focus{border-color:var(--primary);box-shadow:0 0 0 3px color-mix(in srgb,var(--primary) 16%,transparent)}
.filters{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:16px}.filters .input,.filters .select{width:auto;min-width:170px}.alert{padding:12px 14px;border-radius:12px;margin-bottom:18px;border:1px solid var(--line);background:var(--surface)}.alert.success{border-color:#a8e0c4;background:#ecfbf3;color:#146c43}.alert.error{border-color:#f1b5b0;background:#fff0ef;color:#9d2018}.alert.info{border-color:#b8cdef;background:#eef5ff;color:#234f9b}
.book-grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:18px}.book-card{background:var(--surface);border:1px solid var(--line);border-radius:18px;overflow:hidden;box-shadow:var(--shadow);display:flex;flex-direction:column}.book-cover{aspect-ratio:3/4;background:var(--surface-2);overflow:hidden}.book-cover img{width:100%;height:100%;object-fit:cover}.cover-placeholder{height:100%;display:grid;place-items:center;background:linear-gradient(145deg,var(--surface-2),color-mix(in srgb,var(--primary) 14%,var(--surface-2)));color:var(--primary)}.cover-placeholder span{font-size:56px;font-weight:800}.book-info{padding:14px;display:flex;flex-direction:column;gap:7px;flex:1}.book-info h3{font-size:15px;line-height:1.35;margin:0}.book-info p{font-size:12px;color:var(--muted);margin:0}.book-info .btn{margin-top:auto}
.two-col{display:grid;grid-template-columns:1.4fr .9fr;gap:18px}.detail-layout{display:grid;grid-template-columns:240px 1fr;gap:26px}.detail-cover{border-radius:18px;overflow:hidden;background:var(--surface-2);aspect-ratio:3/4}.detail-cover img{width:100%;height:100%;object-fit:cover}.meta{display:grid;grid-template-columns:140px 1fr;gap:8px 16px;font-size:13px}.meta dt{color:var(--muted)}.meta dd{margin:0;font-weight:600}
.empty{padding:38px;text-align:center;color:var(--muted)}.progress{height:8px;background:var(--surface-2);border-radius:999px;overflow:hidden}.progress span{display:block;height:100%;background:var(--primary);border-radius:inherit}.chart-bars{display:grid;gap:12px}.bar-row{display:grid;grid-template-columns:90px 1fr 45px;align-items:center;gap:12px;font-size:12px}.bar-track{height:10px;background:var(--surface-2);border-radius:999px;overflow:hidden}.bar-track span{display:block;height:100%;background:var(--primary);border-radius:999px}
.login-wrap{min-height:100vh;display:grid;grid-template-columns:1.1fr .9fr}.login-hero{padding:64px;background:linear-gradient(140deg,#174f45,#1f6f5f 60%,#2b8975);color:white;display:flex;flex-direction:column;justify-content:space-between}.login-hero h1{font-size:48px;line-height:1.04;margin:0;max-width:700px;letter-spacing:-.045em}.login-hero p{max-width:640px;opacity:.82;font-size:17px;line-height:1.6}.hero-tag{display:inline-flex;border:1px solid rgba(255,255,255,.35);padding:8px 11px;border-radius:999px;font-size:12px;width:max-content}.login-panel{display:grid;place-items:center;padding:32px;background:var(--bg)}.login-card{width:min(430px,100%);background:var(--surface);border:1px solid var(--line);padding:30px;border-radius:22px;box-shadow:var(--shadow)}.login-card h2{margin:0 0 8px}.login-card>p{margin:0 0 22px;color:var(--muted)}.stack{display:grid;gap:14px}.muted{color:var(--muted)}
.install-page{min-height:100vh;padding:30px;background:var(--bg)}.install-card{max-width:860px;margin:0 auto;background:var(--surface);border:1px solid var(--line);border-radius:22px;box-shadow:var(--shadow);padding:28px}.install-card h1{margin-top:0}.code-note{background:var(--surface-2);padding:12px 14px;border-radius:12px;font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:12px;overflow:auto}
.reader-wrap{min-height:100vh;background:#101413;display:flex;flex-direction:column}.reader-bar{height:60px;background:#171d1b;color:#f2f5f4;display:flex;align-items:center;justify-content:space-between;padding:0 16px;gap:14px}.reader-frame{flex:1;width:100%;border:0;min-height:calc(100vh - 60px);background:#222}.reader-title{overflow:hidden;white-space:nowrap;text-overflow:ellipsis}
@media(max-width:1200px){.book-grid{grid-template-columns:repeat(4,1fr)}.grid.stats{grid-template-columns:repeat(2,1fr)}}
@media(max-width:900px){.sidebar{transform:translateX(-100%);transition:.2s}.menu-open .sidebar{transform:translateX(0)}.main-wrap{margin-left:0}.mobile-menu{display:block}.topbar{padding:0 16px}.content{padding:18px}.book-grid{grid-template-columns:repeat(3,1fr)}.two-col{grid-template-columns:1fr}.login-wrap{grid-template-columns:1fr}.login-hero{display:none}}
@media(max-width:640px){.grid.stats{grid-template-columns:1fr 1fr;gap:10px}.stat{padding:15px}.stat strong{font-size:22px}.book-grid{grid-template-columns:repeat(2,1fr);gap:12px}.book-info{padding:11px}.form-grid{grid-template-columns:1fr}.page-head{align-items:flex-start;flex-direction:column}.detail-layout{grid-template-columns:110px 1fr;gap:16px}.meta{grid-template-columns:1fr}.filters .input,.filters .select{width:100%}.user-chip>div:not(.avatar){display:none}.topbar-title strong{font-size:14px}.content{padding:14px}.panel-body{padding:14px}}