:root{font-family:Space Grotesk,sans-serif;color:#0c0c0f;background:radial-gradient(circle at top,#f7f1ff,#f6f7fb 40%,#f2f4f8);--accent: #ff6b3d;--accent-2: #2274a5;--ink: #111217;--muted: #6b6f7a;--panel: #ffffff;--shadow: 0 20px 60px rgba(12, 12, 15, .12)}*{box-sizing:border-box}body{margin:0;min-height:100vh;background:radial-gradient(circle at top left,rgba(255,217,184,.5),transparent 45%),radial-gradient(circle at top right,rgba(151,211,252,.5),transparent 40%),#f3f4f7}#root{min-height:100vh}a{color:inherit;text-decoration:none}button{font-family:inherit;border:none;cursor:pointer}input,select,textarea{font-family:inherit}.app{min-height:100vh}.topbar{display:flex;justify-content:space-between;align-items:center;padding:20px 40px}.brand{display:flex;gap:12px;align-items:center;font-weight:600;letter-spacing:.02em}.brand-mark{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:12px;background:var(--accent);color:#fff;font-weight:700}.top-actions button{padding:10px 16px;border-radius:999px}.primary{background:var(--accent);color:#fff;padding:12px 18px;border-radius:12px;font-weight:600}.ghost{background:#1112170d;color:var(--ink);padding:10px 14px;border-radius:12px}.auth-shell{display:grid;grid-template-columns:1.1fr .9fr;min-height:100vh}.auth-card{padding:80px 80px 40px}.auth-badge{font-size:12px;letter-spacing:.4em;text-transform:uppercase;font-weight:700;color:var(--accent-2)}.auth-header h1{font-family:"Instrument Serif",serif;font-size:48px;margin:12px 0 8px}.auth-header p{color:var(--muted);max-width:360px}.auth-form{display:grid;gap:16px;margin-top:32px;max-width:360px}.auth-form label{display:grid;gap:8px;color:var(--muted)}.auth-form input{padding:12px 14px;border-radius:12px;border:1px solid rgba(0,0,0,.1)}.auth-error{color:#c62828;font-size:14px}.auth-side{padding:80px 60px;display:flex;align-items:center;justify-content:center}.side-panel{background:var(--panel);padding:32px;border-radius:24px;box-shadow:var(--shadow);max-width:320px}.side-panel h2{margin-top:0}.side-panel ul{padding-left:18px;color:var(--muted)}.library{padding:0 40px 40px}.library header{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px}.library header h1{font-size:32px;margin:0}.library .upload{background:var(--accent);color:#fff;padding:12px 18px;border-radius:12px;font-weight:600;cursor:pointer}.library .upload input{display:none}.error{color:#c62828;margin-bottom:12px}.book-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:20px}.book-card{background:var(--panel);padding:20px;border-radius:16px;box-shadow:var(--shadow);text-align:left;transition:transform .2s ease;display:grid;gap:14px}.book-card:hover{transform:translateY(-4px)}.book-card-main{background:transparent;padding:0;text-align:left;display:grid;gap:6px}.book-card-actions{display:flex;gap:8px}.book-card-actions button{flex:1}.danger{background:#c6282814;color:#b71c1c;padding:10px 14px;border-radius:12px}.danger:disabled{opacity:.6;cursor:default}.book-title{display:block;font-weight:600;margin-bottom:6px}.book-meta{color:var(--muted);font-size:14px}.empty{color:var(--muted)}.reader{display:grid;grid-template-columns:320px 1fr;height:calc(100vh - 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