@import "https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap";
@font-face{font-family:Inter;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/2c55a0e60120577a-s.03ez25a9g3i0n.woff2)format("woff2");unicode-range:U+460-52F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F}@font-face{font-family:Inter;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/9c72aa0f40e4eef8-s.3i9rha7jpxn0q.woff2)format("woff2");unicode-range:U+301,U+400-45F,U+490-491,U+4B0-4B1,U+2116}@font-face{font-family:Inter;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/ad66f9afd8947f86-s.2o7ko1d-5m1xu.woff2)format("woff2");unicode-range:U+1F??}@font-face{font-family:Inter;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/5476f68d60460930-s.1ee5w62fj497l.woff2)format("woff2");unicode-range:U+370-377,U+37A-37F,U+384-38A,U+38C,U+38E-3A1,U+3A3-3FF}@font-face{font-family:Inter;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/2bbe8d2671613f1f-s.1way2z9fj6cig.woff2)format("woff2");unicode-range:U+102-103,U+110-111,U+128-129,U+168-169,U+1A0-1A1,U+1AF-1B0,U+300-301,U+303-304,U+308-309,U+323,U+329,U+1EA0-1EF9,U+20AB}@font-face{font-family:Inter;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/1bffadaabf893a1e-s.0szrwpqb9mkwe.woff2)format("woff2");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Inter;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/83afe278b6a6bb3c-s.p.45535valc9rzk.woff2)format("woff2");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:Inter Fallback;src:local(Arial);ascent-override:90.44%;descent-override:22.52%;line-gap-override:0.0%;size-adjust:107.12%}.inter_2fe1ab3d-module__-T-KAq__className{font-family:Inter,Inter Fallback;font-style:normal}.inter_2fe1ab3d-module__-T-KAq__variable{--font-inter:"Inter", "Inter Fallback"}
:root{--bg:#f8fafc;--surface:#fff;--card:#fff;--card2:#f1f5f9;--overlay:#ffffffd9;--border:#e2e8f0;--border-hover:#cbd5e1;--hover:#f1f5f9;--text:#0f172a;--text2:#334155;--muted:#64748b;--dim:#94a3b8;--accent:#10b981;--accent-light:#10b9811f;--accent-hover:#059669;--accent2:#8b5cf6;--accent2-light:#8b5cf61f;--accent2-hover:#7c3aed;--accent3:#f59e0b;--accent3-light:#f59e0b1f;--green:#22c55e;--green-light:#22c55e1f;--amber:#fbbf24;--red:#ef4444;--red-light:#ef44441f;--rose:#f472b6;--orange:#fb923c;--sidebar-bg:#f8fafc;--sidebar-active:#10b9811f;--sidebar-text:#475569;--sidebar-w:260px;--radius-xs:6px;--radius-sm:10px;--radius:14px;--radius-lg:20px;--radius-xl:28px;--radius-full:9999px;--shadow-sm:0 1px 2px #0000000a, 0 2px 8px #00000005;--shadow:0 2px 4px #0000000d, 0 4px 12px #0000000a;--shadow-lg:0 4px 12px #0000000f, 0 12px 32px #0000000d;--glow:0 0 40px #10b9811f;--glow-purple:0 0 40px #8b5cf61f;--transition:.2s ease;--transition-slow:.35s 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var(--accent2));color:#0b0f1a;flex-shrink:0;justify-content:center;align-items:center;width:34px;height:34px;font-size:13px;font-weight:700;display:flex;overflow:hidden}.sb-user-info{overflow:hidden}.sb-user-name{color:var(--text);white-space:nowrap;text-overflow:ellipsis;font-size:13px;font-weight:600;overflow:hidden}.sb-user-role{color:var(--muted);margin-top:1px;font-size:11px}.topbar{top:0;left:var(--sidebar-w);background:var(--surface);border-bottom:1px solid var(--border);z-index:90;justify-content:space-between;align-items:center;height:64px;padding:0 24px;display:flex;position:fixed;right:0}.topbar-left{align-items:center;gap:16px;display:flex}.topbar-title{color:var(--text);font-size:16px;font-weight:600}.topbar-search{background:var(--card);border:1px solid var(--border);border-radius:var(--radius-full);transition:border-color var(--transition);align-items:center;gap:10px;min-width:220px;padding:8px 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24px}.danger-zone-title{color:var(--red);margin-bottom:6px;font-size:14px;font-weight:700}.danger-zone-desc{color:var(--muted);margin-bottom:16px;font-size:13px}.class-grid{grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:16px;display:grid}.class-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius-lg);text-align:center;cursor:pointer;transition:all var(--transition);padding:28px 24px;text-decoration:none;display:block}.class-card:hover{border-color:var(--accent);transform:translateY(-3px);box-shadow:0 8px 32px #10b9811f}.class-number{letter-spacing:-2px;background:linear-gradient(135deg, var(--accent), var(--accent2));-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text;margin-bottom:8px;font-size:40px;font-weight:800}.class-label{color:var(--text);font-size:15px;font-weight:600}.class-meta{color:var(--muted);margin-top:4px;font-size:12px}.chapter-list{flex-direction:column;gap:8px;display:flex}.chapter-item{background:var(--card);border:1px solid var(--border);border-radius:var(--radius-sm);cursor:pointer;transition:all var(--transition);align-items:center;gap:14px;padding:14px 16px;text-decoration:none;display:flex}.chapter-item:hover{border-color:var(--accent);background:var(--card2)}.chapter-number{border-radius:var(--radius-xs);background:var(--accent-light);width:32px;height:32px;color:var(--accent);flex-shrink:0;justify-content:center;align-items:center;font-size:12px;font-weight:700;display:flex}.chapter-title{color:var(--text);flex:1;font-size:14px;font-weight:500}.chapter-meta{color:var(--muted);font-size:11px}.breadcrumb{color:var(--muted);flex-wrap:wrap;align-items:center;gap:8px;margin-bottom:24px;font-size:12px;display:flex}.breadcrumb a{color:var(--muted);transition:color var(--transition)}.breadcrumb a:hover{color:var(--accent)}.breadcrumb-sep{color:var(--dim)}.breadcrumb-current{color:var(--text);font-weight:500}.alert{border-radius:var(--radius-sm);align-items:flex-start;gap:10px;padding:12px 16px;font-size:13px;font-weight:500;display:flex}.alert-error{background:var(--red-light);color:var(--red);border:1px solid #ef444433}.alert-success{background:var(--green-light);color:var(--green);border:1px solid #22c55e33}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:0 0}::-webkit-scrollbar-thumb{background:var(--border);border-radius:var(--radius-full)}::-webkit-scrollbar-thumb:hover{background:var(--dim)}@media (max-width:1024px){.dashboard-grid{grid-template-columns:1fr}.stats-row{grid-template-columns:repeat(2,1fr)}}@media (max-width:768px){.sidebar{transform:translate(-100%)}.sidebar.open{transform:translate(0)}.main-content{margin-left:0}.topbar{left:0}.stats-row{grid-template-columns:1fr 1fr}.page-wrapper{padding:16px 16px 32px}.profile-header{text-align:center;flex-direction:column}}@media (max-width:480px){.stats-row{grid-template-columns:1fr}}@keyframes fadeInUp{0%{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}.animate-fade-in-up{animation:.4s forwards fadeInUp}.skeleton{background:linear-gradient(90deg, var(--card) 25%, var(--card2) 50%, var(--card) 75%);border-radius:var(--radius-sm);background-size:200% 100%;animation:1.5s infinite shimmer}@keyframes shimmer{0%{background-position:200% 0}to{background-position:-200% 0}}