@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');
:root{--bg:#07111f;--panel:#0d1b2d;--panel2:#10233a;--text:#eef5ff;--muted:#8fa4bd;--line:rgba(255,255,255,.08);--accent:#78a9ff}
*{box-sizing:border-box}html,body{margin:0;min-height:100%;font-family:Inter,system-ui,sans-serif;background:radial-gradient(circle at 20% 0,#142b49 0,#07111f 42%);color:var(--text)}
body{user-select:none;-webkit-user-select:none}.topbar{height:72px;display:flex;align-items:center;gap:24px;padding:0 32px;border-bottom:1px solid var(--line);backdrop-filter:blur(20px);position:sticky;top:0;z-index:10;background:rgba(7,17,31,.72)}
.brand{display:flex;align-items:center;gap:10px;color:var(--text);font-weight:800;text-decoration:none;letter-spacing:.08em}.brand-mark{width:34px;height:34px;border-radius:10px;display:grid;place-items:center;background:linear-gradient(135deg,#fff,#78a9ff);color:#07111f;font-weight:900}.search-wrap{flex:1;max-width:620px;margin:auto}.search-wrap input{width:100%;padding:13px 18px;border-radius:14px;border:1px solid var(--line);background:rgba(255,255,255,.05);color:var(--text);outline:none}.icon-btn,.back-btn{border:1px solid var(--line);background:rgba(255,255,255,.05);color:var(--text);border-radius:12px;padding:10px 13px;text-decoration:none;cursor:pointer}
.library{padding:42px clamp(20px,5vw,72px)}.hero{display:flex;align-items:end;justify-content:space-between;margin-bottom:28px}.eyebrow{font-size:11px;font-weight:800;letter-spacing:.18em;color:var(--accent);margin:0 0 9px}h1{font-size:clamp(30px,4vw,52px);margin:0;letter-spacing:-.04em}.muted{color:var(--muted)}.count-pill{padding:9px 13px;border:1px solid var(--line);border-radius:999px;color:var(--muted)}
.book-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(165px,1fr));gap:28px}.book-card{cursor:pointer}.cover{aspect-ratio:3/4;overflow:hidden;border-radius:14px;background:var(--panel);box-shadow:0 18px 35px rgba(0,0,0,.3);transition:.25s;position:relative}.cover img{width:100%;height:100%;object-fit:cover;display:block}.book-card:hover .cover{transform:translateY(-6px);box-shadow:0 25px 50px rgba(0,0,0,.45)}.book-title{font-size:14px;font-weight:600;line-height:1.4;margin:12px 2px;color:#e9f1fb}
.reader-shell{height:100vh;overflow:hidden;background:#02060b}.reader-bar{height:58px;display:flex;align-items:center;gap:20px;padding:0 18px;border-bottom:1px solid var(--line);background:#07111f}.reader-bar strong{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.reader{height:calc(100vh - 58px)}#pdfFrame{width:100%;height:100%;border:0;background:#fff}
.admin-shell{display:grid;grid-template-columns:240px 1fr;min-height:100vh}.sidebar{padding:26px 18px;border-right:1px solid var(--line);background:rgba(7,17,31,.7)}.sidebar nav{display:grid;gap:7px;margin-top:35px}.sidebar nav a{padding:12px;border-radius:10px;color:var(--muted);text-decoration:none}.sidebar nav a.active,.sidebar nav a:hover{background:var(--panel2);color:var(--text)}.admin-main{padding:42px;max-width:1100px;width:100%}.admin-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:28px}.primary{border:0;border-radius:12px;padding:12px 17px;background:linear-gradient(135deg,#dceaff,#78a9ff);color:#07111f;font-weight:800;cursor:pointer}.panel{background:rgba(13,27,45,.82);border:1px solid var(--line);border-radius:18px;padding:24px;margin-bottom:22px}.panel-head{margin-bottom:20px}h2{margin:0;font-size:18px}form{display:grid;gap:16px}label{display:grid;gap:8px;font-size:13px;color:var(--muted)}input,textarea{font:inherit;color:var(--text);background:#091727;border:1px solid var(--line);border-radius:10px;padding:12px}textarea{resize:vertical}.warning{font-size:12px;line-height:1.6;color:#c6d2e1;margin-bottom:0}
@media(max-width:700px){.topbar{padding:0 14px}.brand span:last-child{display:none}.library{padding:28px 16px}.book-grid{grid-template-columns:repeat(2,1fr);gap:18px}.admin-shell{grid-template-columns:1fr}.sidebar{display:none}.admin-main{padding:24px 16px}}