@import "https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&display=swap";:root{--bg-dark:#07080e;--bg-deep:#0e101f;--bg-glass:#14172ba6;--bg-glass-hover:#212545cc;--bg-glass-active:#313663e6;--border-glass:#ffffff14;--border-glass-hover:#ffffff29;--accent-primary:#3b82f6;--accent-primary-glow:#3b82f659;--accent-secondary:#10b981;--accent-secondary-glow:#10b98159;--success:#10b981;--success-glow:#10b98140;--warning:#f59e0b;--error:#f43f5e;--error-glow:#f43f5e40;--text-primary:#f8fafc;--text-secondary:#94a3b8;--text-muted:#64748b;--font-family:"Plus Jakarta Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--radius-sm:8px;--radius-md:16px;--radius-lg:24px;--transition-fast:.2s cubic-bezier(.4, 0, .2, 1);--transition-normal:.3s cubic-bezier(.4, 0, .2, 1);--transition-slow:.5s cubic-bezier(.4, 0, .2, 1);--glow-shadow:0 0 25px var(--accent-primary-glow);--glass-blur:blur(16px);--appbar-bg:#07080ecc;--nav-bg:#121422eb;--nav-active-soft:#3b82f638}body.light-theme{--bg-dark:#fff;--bg-deep:#f5f5f5;--bg-glass:#ffffffb3;--bg-glass-hover:#ffffffd9;--bg-glass-active:#fffffff2;--border-glass:#00000014;--border-glass-hover:#00000029;--accent-primary:#2563eb;--accent-primary-glow:#2563eb26;--accent-secondary:#059669;--accent-secondary-glow:#05966926;--success:#059669;--success-glow:#05966926;--warning:#d97706;--error:#e11d48;--error-glow:#e11d4826;--text-primary:#0f172a;--text-secondary:#475569;--text-muted:#64748b;--glow-shadow:0 0 20px #2563eb33;--appbar-bg:#ffffffe0;--nav-bg:#fffffff0;--nav-active-soft:#2563eb1f}*{box-sizing:border-box;transition:background-color var(--transition-fast) ease, border-color var(--transition-fast) ease, color var(--transition-fast) ease, box-shadow var(--transition-fast) ease;margin:0;padding:0}body{font-family:var(--font-family);background-color:var(--bg-dark);color:var(--text-primary);-webkit-font-smoothing:antialiased;min-height:100vh;transition:background-color var(--transition-normal) ease, background-image var(--transition-normal) ease, color var(--transition-normal) ease;background-image:radial-gradient(at 10% 10%,#3b82f626 0,#0000 50%),radial-gradient(at 90% 80%,#10b9811f 0,#0000 50%),radial-gradient(#0e101f 0,#0000 100%);background-attachment:fixed;line-height:1.5;overflow-x:hidden}body.light-theme{background-image:none}::-webkit-scrollbar{width:8px}::-webkit-scrollbar-track{background:var(--bg-dark)}::-webkit-scrollbar-thumb{background:#ffffff1a;border-radius:4px}::-webkit-scrollbar-thumb:hover{background:var(--accent-primary)}#root{flex-direction:column;width:100%;max-width:1280px;min-height:100vh;margin:0 auto;padding:0 12px;display:flex}.glass-panel{background:var(--bg-glass);-webkit-backdrop-filter:var(--glass-blur);border:1px solid var(--border-glass);border-radius:var(--radius-md);transition:border var(--transition-fast), background var(--transition-fast), transform var(--transition-fast);box-shadow:0 8px 32px #0000005e}.glass-panel:hover{border-color:var(--border-glass-hover)}.app-container{flex-direction:column;flex:1;padding-bottom:95px;display:flex}h1,h2,h3,h4,h5,h6{letter-spacing:-.02em;font-weight:600;line-height:1.25}p{color:var(--text-secondary)}.btn{font-family:var(--font-family);border-radius:var(--radius-sm);cursor:pointer;transition:all var(--transition-fast);border:1px solid #0000;justify-content:center;align-items:center;gap:8px;padding:10px 20px;font-size:.95rem;font-weight:600;text-decoration:none;display:inline-flex}.btn-primary{background:linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));color:#fff;box-shadow:0 4px 15px #3b82f666}.btn-primary:hover{transform:translateY(-2px);box-shadow:0 6px 20px #3b82f699,0 0 10px #3b82f633}.btn-primary:active{transform:translateY(0)}.btn-secondary{border:1px solid var(--border-glass);color:var(--text-primary);background:#ffffff0d}.btn-secondary:hover{background:#ffffff1a;border-color:#fff3;transform:translateY(-1px)}.btn-danger{background:linear-gradient(135deg, var(--error), #be123c);color:#fff;box-shadow:0 4px 12px #f43f5e4d}.btn-danger:hover{transform:translateY(-2px);box-shadow:0 6px 16px #f43f5e80}.tabs-navigation{z-index:1000;background:var(--nav-bg);-webkit-backdrop-filter:blur(20px);border:1px solid var(--border-glass);max-width:520px;transition:background-color var(--transition-normal), border-color var(--transition-normal);border-radius:24px;gap:4px;margin:0 auto;padding:8px;display:flex;position:fixed;bottom:16px;left:16px;right:16px;box-shadow:0 12px 30px #0f172a29}body.light-theme .tabs-navigation{box-shadow:0 12px 30px #0f172a1a}.tab-btn{font-family:var(--font-family);color:var(--text-muted);cursor:pointer;transition:color var(--transition-fast);background:0 0;border:none;border-radius:16px;flex-direction:column;flex:1;justify-content:center;align-items:center;gap:5px;padding:4px;font-size:.72rem;font-weight:600;display:flex}.tab-icon{width:54px;height:30px;transition:background var(--transition-fast), color var(--transition-fast);border-radius:14px;justify-content:center;align-items:center;display:flex}.tab-btn svg{width:20px;height:20px}.tab-btn:hover{color:var(--text-secondary)}.tab-btn.active{color:var(--accent-primary)}.tab-btn.active .tab-icon{background:var(--nav-active-soft);color:var(--accent-primary)}.books-grid{animation:fadeIn var(--transition-normal);grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:24px;display:grid}.book-card{flex-direction:column;display:flex;overflow:hidden}.book-cover-preview{border-radius:var(--radius-md) var(--radius-md) 0 0;flex-direction:column;justify-content:space-between;height:160px;padding:20px;display:flex;position:relative;overflow:hidden}.book-cover-preview:before{content:"";z-index:1;background:#00000026;position:absolute;inset:0}.book-category-tag{-webkit-backdrop-filter:blur(4px);letter-spacing:.02em;color:#fff;z-index:2;background:#0006;border:1px solid #ffffff26;border-radius:20px;align-self:flex-start;padding:4px 10px;font-size:.75rem;font-weight:600}.book-cover-title{color:#fff;z-index:2;text-shadow:0 2px 4px #00000080;font-size:1.4rem;font-weight:800;line-height:1.2}.book-card-body{flex-direction:column;flex:1;gap:12px;padding:20px;display:flex}.book-meta{color:var(--text-secondary);justify-content:space-between;align-items:center;font-size:.85rem;display:flex}.book-description{color:var(--text-secondary);-webkit-line-clamp:3;-webkit-box-orient:vertical;margin-bottom:8px;font-size:.9rem;line-height:1.5;display:-webkit-box;overflow:hidden}.book-progress-wrapper{flex-direction:column;gap:6px;margin-top:auto;display:flex}.book-progress-text{color:var(--accent-secondary);justify-content:space-between;font-size:.8rem;font-weight:600;display:flex}.reader-drawer{border-left:1px solid var(--border-glass);z-index:1000;width:100%;max-width:680px;animation:slideInRight var(--transition-normal);background:#0d0f21;flex-direction:column;display:flex;position:fixed;top:0;bottom:0;right:0;overflow:hidden;box-shadow:-10px 0 40px #0009}.reader-header{background:var(--bg-glass);border-bottom:1px solid var(--border-glass);justify-content:space-between;align-items:center;padding:24px;display:flex}.reader-header-info{flex-direction:column;display:flex}.reader-category{color:var(--accent-secondary);text-transform:uppercase;letter-spacing:.05em;font-size:.8rem;font-weight:700}.reader-title{color:#fff;margin-top:4px;font-size:1.25rem;font-weight:600}.close-btn{border:1px solid var(--border-glass);color:var(--text-primary);cursor:pointer;width:40px;height:40px;transition:all var(--transition-fast);background:#ffffff0d;border-radius:50%;justify-content:center;align-items:center;display:flex}.close-btn:hover{color:var(--error);background:#f43f5e1a;border-color:#f43f5e33}.reader-content{flex-direction:column;flex:1;gap:28px;padding:32px 24px;display:flex;overflow-y:auto}.chapter-section{border-radius:var(--radius-md);background:#ffffff05;border:1px solid #ffffff08;padding:24px;box-shadow:0 4px 20px #00000026}.chapter-section h3{color:#fff;border-left:3px solid var(--accent-primary);margin-bottom:12px;padding-left:10px;font-size:1.15rem;font-weight:600}.chapter-section p{color:var(--text-secondary);margin-bottom:12px;font-size:.95rem;line-height:1.6}.chapter-section ul,.chapter-section ol{color:var(--text-secondary);flex-direction:column;gap:8px;margin-bottom:12px;margin-left:20px;font-size:.95rem;display:flex}.reader-footer{background:var(--bg-glass);border-top:1px solid var(--border-glass);justify-content:space-between;align-items:center;gap:16px;padding:20px 24px;display:flex}.drawer-backdrop{-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:999;animation:fadeIn var(--transition-normal);background:#0009;position:fixed;inset:0}.tests-list{animation:fadeIn var(--transition-normal);flex-direction:column;gap:16px;display:flex}.test-list-card{justify-content:space-between;align-items:center;gap:20px;padding:24px;display:flex}.test-info{flex-direction:column;flex:1;gap:6px;display:flex}.test-title-row{flex-wrap:wrap;align-items:center;gap:12px;display:flex}.test-title{font-size:1.25rem;font-weight:700}.badge{letter-spacing:.05em;text-transform:uppercase;border-radius:4px;padding:2px 8px;font-size:.7rem;font-weight:700}.badge-violet{color:#60a5fa;background:#3b82f626;border:1px solid #3b82f64d}.badge-cyan{color:#34d399;background:#10b98126;border:1px solid #10b9814d}.test-meta-row{color:var(--text-muted);gap:16px;font-size:.85rem;display:flex}.test-action-group{gap:12px;display:flex}.quiz-interface-container{animation:fadeIn var(--transition-normal);grid-template-columns:1fr;gap:24px;margin-top:10px;display:grid}@media 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#0003}.score-circular-metric.pass{border-color:var(--success-glow)}.score-circular-metric.fail{border-color:var(--error-glow)}.score-percentage-value{color:#fff;font-size:2.2rem;font-weight:800}.score-verdict-title{margin-top:8px;font-size:1.4rem;font-weight:600}.score-verdict-title.success-text{color:var(--success);text-shadow:0 0 15px var(--success-glow)}.score-verdict-title.error-text{color:var(--error);text-shadow:0 0 15px var(--error-glow)}.stats-grid-row{grid-template-columns:repeat(3,1fr);gap:16px;width:100%;max-width:500px;margin-top:10px;display:grid}.stat-metric-card{border:1px solid 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16px;display:flex}.lb-row:hover{border-color:var(--border-glass-hover)}.lb-row.is-you{background:linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));box-shadow:0 8px 20px var(--accent-primary-glow);border-color:#0000}.lb-row.is-you .lb-row-rank,.lb-row.is-you .lb-row-name,.lb-row.is-you .lb-row-pts{color:#fff}.lb-row.is-you .lb-row-pts small{color:#ffffffc7}.lb-row.is-you .lb-row-avatar{box-shadow:0 0 0 2px #ffffff8c}.lb-row-rank{text-align:center;color:var(--text-muted);flex:0 0 24px;font-size:.95rem;font-weight:800}.lb-row-avatar{color:#fff;border-radius:50%;flex:none;justify-content:center;align-items:center;width:40px;height:40px;font-size:.92rem;font-weight:700;display:flex}.lb-row-name{min-width:0;color:var(--text-primary);white-space:nowrap;text-overflow:ellipsis;flex:auto;font-size:.95rem;font-weight:600;overflow:hidden}.lb-row-pts{color:var(--text-primary);flex:none;font-size:.95rem;font-weight:800}.lb-row-pts 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