@font-face{font-family:Fira Code;font-style:normal;font-weight:400;font-display:swap;src:url(/assets/uU9NCBsR6Z2vfE9aq3bh0NSDulI-DhYMMuQd.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:Fira Code;font-style:normal;font-weight:400;font-display:swap;src:url(/assets/uU9NCBsR6Z2vfE9aq3bh2dSDulI-Y3u8pIsh.woff2)format("woff2");unicode-range:U+301,U+400-45F,U+490-491,U+4B0-4B1,U+2116}@font-face{font-family:Fira Code;font-style:normal;font-weight:400;font-display:swap;src:url(/assets/uU9NCBsR6Z2vfE9aq3bh0dSDulI-wWus70Ix.woff2)format("woff2");unicode-range:U+1F??}@font-face{font-family:Fira Code;font-style:normal;font-weight:400;font-display:swap;src:url(/assets/uU9NCBsR6Z2vfE9aq3bh3tSDulI-B2SviObF.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:Fira Code;font-style:normal;font-weight:400;font-display:swap;src:url(/assets/uU9NCBsR6Z2vfE9aq3bhZ_Wmh2uX-CE6EOz_n.woff2)format("woff2");unicode-range:U+2000-2001,U+2004-2008,U+200A,U+23B8-23BD,U+2500-259F}@font-face{font-family:Fira Code;font-style:normal;font-weight:400;font-display:swap;src:url(/assets/uU9NCBsR6Z2vfE9aq3bh09SDulI-Dvfvaomy.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:Fira Code;font-style:normal;font-weight:400;font-display:swap;src:url(/assets/uU9NCBsR6Z2vfE9aq3bh3dSD-CHoedHDv.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:Fira Code;font-style:normal;font-weight:500;font-display:swap;src:url(/assets/uU9NCBsR6Z2vfE9aq3bh0NSDulI-DhYMMuQd.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:Fira Code;font-style:normal;font-weight:500;font-display:swap;src:url(/assets/uU9NCBsR6Z2vfE9aq3bh2dSDulI-Y3u8pIsh.woff2)format("woff2");unicode-range:U+301,U+400-45F,U+490-491,U+4B0-4B1,U+2116}@font-face{font-family:Fira Code;font-style:normal;font-weight:500;font-display:swap;src:url(/assets/uU9NCBsR6Z2vfE9aq3bh0dSDulI-wWus70Ix.woff2)format("woff2");unicode-range:U+1F??}@font-face{font-family:Fira Code;font-style:normal;font-weight:500;font-display:swap;src:url(/assets/uU9NCBsR6Z2vfE9aq3bh3tSDulI-B2SviObF.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:Fira Code;font-style:normal;font-weight:500;font-display:swap;src:url(/assets/uU9NCBsR6Z2vfE9aq3bhZ_Wmh2uX-CE6EOz_n.woff2)format("woff2");unicode-range:U+2000-2001,U+2004-2008,U+200A,U+23B8-23BD,U+2500-259F}@font-face{font-family:Fira Code;font-style:normal;font-weight:500;font-display:swap;src:url(/assets/uU9NCBsR6Z2vfE9aq3bh09SDulI-Dvfvaomy.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:Fira Code;font-style:normal;font-weight:500;font-display:swap;src:url(/assets/uU9NCBsR6Z2vfE9aq3bh3dSD-CHoedHDv.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:Outfit;font-style:normal;font-weight:400;font-display:swap;src:url(/assets/QGYvz_MVcBeNP4NJuktqQ4E-DdQaqQDo.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:Outfit;font-style:normal;font-weight:400;font-display:swap;src:url(/assets/QGYvz_MVcBeNP4NJtEtq-Bc-8i84L.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:Outfit;font-style:normal;font-weight:500;font-display:swap;src:url(/assets/QGYvz_MVcBeNP4NJuktqQ4E-DdQaqQDo.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:Outfit;font-style:normal;font-weight:500;font-display:swap;src:url(/assets/QGYvz_MVcBeNP4NJtEtq-Bc-8i84L.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:Outfit;font-style:normal;font-weight:600;font-display:swap;src:url(/assets/QGYvz_MVcBeNP4NJuktqQ4E-DdQaqQDo.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:Outfit;font-style:normal;font-weight:600;font-display:swap;src:url(/assets/QGYvz_MVcBeNP4NJtEtq-Bc-8i84L.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:Outfit;font-style:normal;font-weight:700;font-display:swap;src:url(/assets/QGYvz_MVcBeNP4NJuktqQ4E-DdQaqQDo.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:Outfit;font-style:normal;font-weight:700;font-display:swap;src:url(/assets/QGYvz_MVcBeNP4NJtEtq-Bc-8i84L.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}:root{--bg-deep:#060913;--glass-bg:#0d14268c;--glass-bg-hover:#141e37b3;--glass-border:#ffffff0d;--glass-border-active:#3b82f659;--primary:#3b82f6;--primary-glow:#3b82f659;--secondary:#a855f7;--secondary-glow:#a855f740;--success:#10b981;--success-glow:#10b98133;--warning:#f59e0b;--danger:#ef4444;--danger-glow:#ef444433;--text-primary:#f8fafc;--text-secondary:#cbd5e1;--text-muted:#64748b;--text-dark:#0f172a;--code-bg:#04060c66;--code-header-bg:#0a101e66;--code-tabs-bar-bg:#04060c73;--code-tab-active-bg:#0a101e4d;--code-tab-active-border-bottom:#080c18;--scrollbar-thumb:#ffffff0f;--scrollbar-thumb-hover:#ffffff1f;--aurora-opacity:.45;--card-shadow:0 8px 32px 0 #0006;--input-bg:#00000040;--input-form-bg:#0000004d;--input-text:white;--tab-active-bg:#2563eb14;--tab-active-text:var(--primary);--tab-active-shadow:0 4px 20px #2563eb14;--tab-hover-bg:#ffffff0f;--btn-sec-hover-bg:#ffffff1a;--btn-sec-hover-text:white;--danger-text:#f87171;--logo-gradient:linear-gradient(to right, #fff, #cbd5e1);--att-section-bg:#00000026;--att-card-bg:#ffffff05;--att-card-hover-bg:#ffffff0f;--att-inner-bg:#00000040;--att-inner-image-bg:#0000004d}body.light-theme,html.light-theme{--bg-deep:#f1f5f9;--glass-bg:#fff;--glass-bg-hover:#fff;--glass-border:#0f172a1f;--glass-border-active:#2563eb73;--primary:#2563eb;--primary-glow:#2563eb1f;--secondary:#4f46e5;--secondary-glow:#4f46e514;--success:#059669;--success-glow:#0596691a;--warning:#d97706;--danger:#dc2626;--danger-glow:#dc26261a;--text-primary:#0f172a;--text-secondary:#334155;--text-muted:#64748b;--text-dark:#0f172a;--code-bg:#fff;--code-header-bg:#f8fafc;--code-tabs-bar-bg:#f1f5f9;--code-tab-active-bg:#fff;--code-tab-active-border-bottom:#fff;--scrollbar-thumb:#0f172a1f;--scrollbar-thumb-hover:#0f172a33;--aurora-opacity:.12;--card-shadow:0 4px 20px 0 #0f172a0d;--input-bg:#0f172a0a;--input-form-bg:#0f172a0a;--input-text:var(--text-primary);--tab-active-bg:#2563eb14;--tab-active-text:var(--primary);--tab-active-shadow:0 4px 20px #2563eb14;--tab-hover-bg:#0f172a0f;--btn-sec-hover-bg:#0f172a14;--btn-sec-hover-text:var(--text-primary);--danger-text:#dc2626;--logo-gradient:linear-gradient(to right, var(--text-primary), var(--text-secondary));--att-section-bg:#f8fafc;--att-card-bg:#fff;--att-card-hover-bg:#f8fafc;--att-inner-bg:#0f172a08;--att-inner-image-bg:#0f172a0a}*{box-sizing:border-box;margin:0;padding:0;transition:background-color .25s,border-color .25s,box-shadow .25s}body{background-color:var(--bg-deep);color:var(--text-primary);min-height:100vh;font-family:Outfit,sans-serif;line-height:1.5;position:relative;overflow-x:hidden}body:before,body:after{content:"";filter:blur(120px);z-index:-1;opacity:.12;pointer-events:none;border-radius:50%;width:500px;height:500px;position:fixed}body:before{background:radial-gradient(circle, var(--primary) 0%, #2563eb00 70%);animation:15s ease-in-out infinite alternate float-slow;top:-10%;left:-10%}body:after{background:radial-gradient(circle, var(--secondary) 0%, #4f46e500 70%);animation:20s ease-in-out infinite alternate-reverse float-slow;bottom:-10%;right:-10%}@keyframes float-slow{0%{transform:translate(0)scale(1)}50%{transform:translate(50px,30px)scale(1.1)}to{transform:translate(-30px,-50px)scale(.9)}}.glass-card{background:var(--glass-bg);-webkit-backdrop-filter:blur(20px)saturate(160%);border:1px solid var(--glass-border);border-radius:16px;box-shadow:0 8px 30px #0f172a0a}.glass-card:hover{background:var(--glass-bg-hover);border-color:#0f172a1f}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:0 0}::-webkit-scrollbar-thumb{background:#0f172a1f;border-radius:3px}::-webkit-scrollbar-thumb:hover{background:#ffffff26}.layout-container{flex-direction:column;gap:24px;width:100%;max-width:1600px;min-height:100vh;margin:0 auto;padding:32px 24px;display:flex}.home-container,.course-detail-container{flex-direction:column;flex-grow:1;gap:24px;display:flex}.course-detail-container{gap:16px}.app-header{z-index:50;justify-content:space-between;align-items:center;padding:20px 28px;display:flex;position:sticky;top:16px}.logo-section{cursor:pointer;align-items:center;gap:12px;display:flex}.logo-icon{background:linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);color:#fff;border-radius:12px;justify-content:center;align-items:center;padding:10px;display:flex;box-shadow:0 4px 15px #3b82f666}.logo-section h1{letter-spacing:-.5px;background:linear-gradient(to right, var(--text-primary), var(--text-secondary));-webkit-text-fill-color:transparent;-webkit-background-clip:text;font-size:1.5rem;font-weight:700}.logo-badge{color:var(--primary);background:#2563eb14;border:1px solid #2563eb33;border-radius:6px;padding:2px 8px;font-size:.75rem;font-weight:500}.stats-bar{grid-template-columns:repeat(4,1fr);gap:20px;margin-bottom:8px;display:grid}.stat-item{align-items:center;gap:16px;padding:18px 24px;display:flex}.stat-icon{border-radius:12px;justify-content:center;align-items:center;width:48px;height:48px;display:flex}.stat-icon.courses{color:var(--primary);background:#3b82f61f}.stat-icon.tasks{color:var(--secondary);background:#a855f71f}.stat-icon.copies{color:var(--success);background:#10b9811f}.stat-icon.views{color:var(--warning);background:#f59e0b1f}.stat-info{flex-direction:column;display:flex}.stat-info .stat-value{font-size:1.5rem;font-weight:700;line-height:1.2}.stat-info .stat-label{color:var(--text-muted);font-size:.85rem}.section-header{justify-content:space-between;align-items:center;margin-top:10px;display:flex}.section-title{flex-direction:column;gap:4px;display:flex}.section-title h2{color:var(--text-primary);font-size:1.6rem;font-weight:700}.section-title p{color:var(--text-muted);font-size:.9rem}.header-actions{align-items:center;gap:16px;display:flex}.search-input-wrapper{width:280px;position:relative}.search-input-wrapper svg{color:var(--text-muted);position:absolute;top:50%;left:14px;transform:translateY(-50%)}.search-input{border:1px solid var(--glass-border);width:100%;color:var(--text-primary);background:#0f172a0a;border-radius:10px;outline:none;padding:10px 16px 10px 42px;font-family:inherit;font-size:.9rem}.search-input:focus{border-color:var(--primary);box-shadow:0 0 10px var(--primary-glow);background:#fff}.btn-primary{background:linear-gradient(135deg, var(--primary) 0%, #2563eb 100%);color:#fff;cursor:pointer;border:none;border-radius:10px;align-items:center;gap:8px;padding:11px 20px;font-size:.92rem;font-weight:600;transition:all .2s;display:flex;box-shadow:0 4px 15px #3b82f64d}.btn-primary:hover{background:linear-gradient(135deg, #4f46e5 0%, var(--primary) 100%);transform:translateY(-1px);box-shadow:0 6px 20px #3b82f673}.btn-secondary{border:1px solid var(--glass-border);color:var(--text-secondary);cursor:pointer;background:#0f172a0a;border-radius:10px;align-items:center;gap:8px;padding:10px 18px;font-size:.9rem;font-weight:500;display:flex}.btn-secondary:hover{color:var(--text-primary);background:#0f172a14;border-color:#0f172a26}.btn-danger{color:#dc2626;cursor:pointer;background:#dc262614;border:1px solid #dc262633;border-radius:8px;align-items:center;gap:6px;padding:6px 12px;font-size:.8rem;font-weight:500;display:flex}.btn-danger:hover{color:#fff;background:#dc2626;border-color:#dc2626}.edit-hover,.trash-hover{transition:color .2s,transform .2s}.edit-hover:hover{transform:scale(1.15);color:var(--primary)!important}.trash-hover:hover{transform:scale(1.15);color:var(--danger)!important}.courses-grid{grid-template-columns:repeat(auto-fill,minmax(380px,1fr));gap:24px;display:grid}.course-card{cursor:pointer;flex-direction:column;height:220px;padding:24px;display:flex;position:relative;overflow:hidden}.course-card:hover{box-shadow:var(--card-shadow);border-color:var(--primary);transform:translateY(-3px)}.course-card-header{justify-content:space-between;align-items:flex-start;margin-bottom:12px;display:flex}.course-card-header h3{color:var(--text-primary);font-size:1.25rem;font-weight:600;line-height:1.3}.course-task-badge{border:1px solid var(--secondary-glow);color:#c084fc;background:#a855f71f;border-radius:8px;align-items:center;gap:4px;padding:4px 10px;font-size:.78rem;font-weight:600;display:flex}.course-card-desc{color:var(--text-secondary);-webkit-line-clamp:3;-webkit-box-orient:vertical;flex-grow:1;margin-bottom:16px;font-size:.9rem;display:-webkit-box;overflow:hidden}.course-card-footer{color:var(--text-muted);border-top:1px solid var(--glass-border);justify-content:space-between;align-items:center;padding-top:12px;font-size:.8rem;display:flex}.course-meta-item{align-items:center;gap:6px;display:flex}.skeleton-pulse{background:linear-gradient(90deg,#ffffff08 25%,#ffffff14 50%,#ffffff08 75%) 0 0/200% 100%;border-radius:8px;animation:1.5s infinite shimmer}.light-theme .skeleton-pulse{background:linear-gradient(90deg,#e2e8f0 25%,#f1f5f9 50%,#e2e8f0 75%)}@keyframes shimmer{0%{background-position:200% 0}to{background-position:-200% 0}}.skeleton-card{background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:16px;flex-direction:column;gap:16px;height:220px;padding:24px;display:flex}.skeleton-title{width:60%;height:24px}.skeleton-text{width:90%;height:16px}.skeleton-text.short{width:40%}.skeleton-footer{width:100%;height:20px;margin-top:auto}.empty-state{text-align:center;flex-direction:column;justify-content:center;align-items:center;gap:16px;max-width:480px;margin:40px auto;padding:80px 40px;display:flex}.empty-state-icon{border:1px dashed var(--glass-border);width:80px;height:80px;color:var(--text-muted);background:#ffffff08;border-radius:50%;justify-content:center;align-items:center;margin-bottom:8px;display:flex}.empty-state h3{color:var(--text-primary);font-size:1.25rem;font-weight:600}.empty-state p{color:var(--text-muted);font-size:.92rem}.breadcrumbs{color:var(--text-muted);align-items:center;gap:8px;margin-bottom:4px;font-size:.95rem;display:flex}.breadcrumbs span{align-items:center;gap:4px;display:flex}.breadcrumbs .breadcrumb-link{color:var(--text-muted);cursor:pointer}.breadcrumbs .breadcrumb-link:hover{color:var(--primary)}.breadcrumbs .breadcrumb-active{color:var(--text-primary);font-weight:500}.course-detail-layout{flex-grow:1;grid-template-columns:360px minmax(0,1fr);gap:24px;height:calc(100vh - 220px);min-height:500px;display:grid}.course-detail-sidebar{flex-direction:column;padding:20px;display:flex;overflow:hidden}.sidebar-search-bar{margin-bottom:16px}.sidebar-search-bar input{padding:9px 12px 9px 36px;font-size:.85rem}.sidebar-search-bar svg{left:12px}.task-list-wrapper{flex-direction:column;flex-grow:1;gap:10px;padding-right:4px;display:flex;overflow-y:auto}.task-item{background:var(--att-card-bg);border:1px solid var(--glass-border);cursor:pointer;text-align:left;border-radius:12px;flex-direction:column;gap:6px;padding:14px 18px;display:flex}.task-item:hover{background:var(--att-card-hover-bg);border-color:#0f172a26;transform:translate(2px)}.task-item.active{border-color:var(--glass-border-active);background:#2563eb14;box-shadow:0 4px 20px #2563eb14}.task-item-header{justify-content:space-between;align-items:center;display:flex}.task-item-header h4{color:var(--text-primary);white-space:nowrap;text-overflow:ellipsis;flex-grow:1;margin-right:8px;font-size:.95rem;font-weight:600;overflow:hidden}.task-item-desc{color:var(--text-muted);white-space:nowrap;text-overflow:ellipsis;font-size:.8rem;overflow:hidden}.task-item-footer{color:var(--text-muted);justify-content:space-between;align-items:center;margin-top:2px;font-size:.75rem;display:flex}.task-lang-badge{text-transform:uppercase;color:var(--text-secondary);background:#ffffff14;border-radius:4px;padding:1px 6px;font-size:.7rem}.code-viewer-container{flex-direction:column;height:100%;animation:.4s cubic-bezier(.16,1,.3,1) forwards apple-panel-appear;display:flex;overflow:hidden}.code-viewer-header{border-bottom:1px solid var(--glass-border);background:var(--code-header-bg);border-radius:16px 16px 0 0;justify-content:space-between;align-items:center;padding:16px 24px;display:flex}.code-viewer-title{flex-direction:column;gap:4px;display:flex}.code-title-row{align-items:center;gap:12px;display:flex}.code-title-row h2{font-size:1.25rem;font-weight:600}.code-viewer-meta{color:var(--text-muted);align-items:center;gap:14px;font-size:.8rem;display:flex}.code-viewer-actions{align-items:center;gap:10px;display:flex}.code-viewer-body{background:var(--code-bg);border-radius:0;position:relative;overflow-y:hidden}.code-viewer-scroll-wrapper{flex-direction:column;flex-grow:1;min-height:0;display:flex;overflow-y:auto}pre{font-size:.9rem;line-height:1.5;background:0 0!important;margin:0!important;padding:24px 24px 24px 0!important;font-family:Fira Code,monospace!important}code[class*=language-],pre[class*=language-]{text-shadow:none!important;color:#24292e!important}.token.comment,.token.prolog,.token.doctype,.token.cdata{color:#6a737d;font-style:italic}.token.punctuation{color:#24292e}.token.property,.token.tag,.token.boolean,.token.number,.token.constant,.token.symbol,.token.deleted{color:#d73a49}.token.selector,.token.attr-name,.token.string,.token.char,.token.builtin,.token.inserted{color:#22863a}.token.operator,.token.entity,.token.url,.language-css .token.string,.style .token.string{color:#d73a49}.token.atrule,.token.attr-value,.token.keyword,.token.class-name{color:#005cc5}.token.function,.token.constant{color:#6f42c1}.token.regex,.token.important,.token.variable{color:#e36209}.code-line-numbers{text-align:right;border-right:1px solid var(--glass-border);color:var(--text-muted);-webkit-user-select:none;user-select:none;margin-right:16px;padding-right:16px;font-family:monospace;display:inline-block}.modal-overlay{-webkit-backdrop-filter:blur(12px);z-index:100;background:#020408a6;justify-content:center;align-items:center;animation:.25s fadeIn;display:flex;position:fixed;inset:0}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.modal-content{width:520px;max-width:90%;padding:32px;animation:.3s cubic-bezier(.34,1.56,.64,1) modalScaleUp;position:relative;overflow:hidden}@keyframes modalScaleUp{0%{opacity:0;transform:scale(.92)translateY(12px)}to{opacity:1;transform:scale(1)translateY(0)}}.modal-header{justify-content:space-between;align-items:center;margin-bottom:24px;display:flex}.modal-header h3{font-size:1.35rem;font-weight:700}.modal-close-btn{color:var(--text-muted);cursor:pointer;background:0 0;border:none;border-radius:50%;justify-content:center;align-items:center;width:32px;height:32px;display:flex}.modal-close-btn:hover{color:#fff;background:#ffffff0d}.modal-form{flex-direction:column;gap:18px;display:flex}.form-group{flex-direction:column;gap:6px;display:flex}.form-group label{color:var(--text-secondary);font-size:.85rem;font-weight:500}.form-group input,.form-group textarea,.form-group select{border:1px solid var(--glass-border);color:var(--text-primary);background:#0f172a0a;border-radius:8px;outline:none;padding:11px 14px;font-family:inherit;font-size:.9rem}.form-group input:focus,.form-group textarea:focus,.form-group select:focus{border-color:var(--primary);box-shadow:0 0 8px var(--primary-glow);background:#fff}.form-group select option{color:var(--text-primary);background:#fff}.form-group textarea{resize:vertical;min-height:120px}.form-group textarea.code-area{min-height:220px;font-family:Fira Code,monospace;font-size:.85rem}.form-actions{justify-content:flex-end;gap:12px;margin-top:10px;display:flex}.toast-container{z-index:1000;pointer-events:none;flex-direction:column;gap:10px;display:flex;position:fixed;bottom:24px;right:24px}.toast{pointer-events:auto;color:#fff;border:1px solid #ffffff14;border-radius:12px;align-items:center;gap:12px;padding:14px 20px;font-size:.88rem;animation:.3s cubic-bezier(.16,1,.3,1) slideInRight;display:flex;box-shadow:0 8px 24px #00000080}@keyframes slideInRight{0%{opacity:0;transform:translate(100%)}to{opacity:1;transform:translate(0)}}.toast.success{background:#10b981d9;border-color:#10b9814d;box-shadow:0 8px 24px #10b98133}.toast.info{background:#3b82f6d9;border-color:#3b82f64d;box-shadow:0 8px 24px #3b82f633}.toast.error{background:#ef4444d9;border-color:#ef44444d;box-shadow:0 8px 24px #ef444433}@media (width<=1024px){.course-detail-layout{grid-template-columns:280px minmax(0,1fr)}.stats-bar{grid-template-columns:repeat(2,1fr)}}@media (width<=768px){.layout-container{gap:16px;padding:16px 12px}.app-header{flex-direction:column;align-items:flex-start;gap:12px;padding:16px;position:relative;top:0}.app-header h1{font-size:1.3rem}.header-subtitle{font-size:.8rem!important}.stats-bar{grid-template-columns:repeat(2,1fr);gap:12px}.stat-item{border-radius:12px;gap:10px;padding:12px}.stat-icon{border-radius:8px;width:38px;height:38px}.stat-icon svg{width:18px;height:18px}.stat-info .stat-value{font-size:1.15rem}.stat-info .stat-label{font-size:.72rem}.section-header{flex-direction:column;align-items:flex-start;gap:12px;width:100%}.section-title h2{font-size:1.35rem}.header-actions{flex-wrap:wrap;justify-content:flex-start;gap:10px;width:100%}.search-input-wrapper{width:100%}.courses-grid{grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:16px}.course-card{height:auto;min-height:180px;padding:16px}.course-card-header h3{font-size:1.15rem}.course-detail-layout{grid-template-columns:1fr;gap:16px;height:auto}.course-detail-sidebar{height:300px;padding:16px}.code-viewer-container{border-radius:16px;height:auto;min-height:300px}.code-viewer-attachments-section{padding:16px}.attachments-grid{-webkit-overflow-scrolling:touch;gap:12px;padding-bottom:8px;display:flex;overflow-x:auto}.attachment-viewer-card{flex-shrink:0;width:160px;padding:10px}.attachment-image-preview-wrapper{height:80px}.code-viewer-attachments-section h4{margin-bottom:10px;font-size:.85rem}.code-viewer-header{flex-direction:column;align-items:flex-start;gap:12px;padding:16px}.code-viewer-title{width:100%}.code-title-row{flex-wrap:wrap;gap:8px}.code-title-row h2{word-break:break-all;font-size:1.15rem}.code-viewer-meta{flex-wrap:wrap;gap:6px 12px;margin-top:4px;font-size:.75rem}.code-viewer-actions{border-top:1px solid #ffffff0d;justify-content:flex-end;width:100%;padding-top:10px}.modal-content{width:95%;padding:20px 16px}.modal-header{margin-bottom:16px}}@media (width>=769px){html,body{height:100vh;overflow:hidden}#root{flex-direction:column;height:100vh;display:flex;overflow:hidden}.layout-container{gap:16px;width:100%;height:100vh;padding:24px;overflow:hidden}.app-header{flex-shrink:0;margin-bottom:8px}.home-container,.course-detail-container{flex-grow:1;min-height:0;overflow:hidden}.courses-grid{flex-grow:1;padding-bottom:12px;overflow-y:auto}.course-detail-layout{flex-grow:1;height:100%;min-height:0}}.code-tabs-bar{background:var(--code-tabs-bar-bg);border-bottom:1px solid var(--glass-border);flex-shrink:0;gap:6px;padding:8px 16px 0;display:flex;overflow-x:auto}.code-tab{color:var(--text-muted);cursor:pointer;white-space:nowrap;background:0 0;border:1px solid #0000;border-bottom:none;border-radius:8px 8px 0 0;align-items:center;gap:8px;padding:8px 16px;font-family:Fira Code,monospace;font-size:.82rem;transition:all .2s;display:flex;-webkit-user-select:all!important;user-select:all!important}.code-tab:hover{color:var(--text-secondary);background:#0f172a08}.code-tab.active{background:var(--code-tab-active-bg);border-color:var(--glass-border);border-bottom:1px solid var(--code-tab-active-border-bottom);color:var(--primary);margin-bottom:-1px;font-weight:500;box-shadow:0 -2px 10px #2563eb0f}.form-file-tabs-container{border:1px solid var(--glass-border);background:#0f172a08;border-radius:8px;margin-top:4px;padding:8px}.form-file-tabs{scrollbar-width:thin;align-items:center;gap:8px;padding-bottom:2px;display:flex;overflow-x:auto}.form-file-tabs::-webkit-scrollbar{height:4px}.form-file-tabs::-webkit-scrollbar-thumb{background:#0f172a1a;border-radius:2px}.form-file-tab{border:1px solid var(--glass-border);color:var(--text-muted);cursor:pointer;white-space:nowrap;background:#0f172a05;border-radius:6px;align-items:center;gap:6px;padding:6px 12px;font-size:.82rem;transition:all .2s;display:flex;-webkit-user-select:all!important;user-select:all!important}.form-file-tab:hover{color:var(--text-secondary);background:#0f172a0f;border-color:#0f172a26}.form-file-tab.active{border-color:var(--primary);color:var(--primary);background:#2563eb14;box-shadow:0 0 10px #2563eb14}.form-file-tab-close{color:var(--text-muted);cursor:pointer;background:0 0;border:none;border-radius:50%;justify-content:center;align-items:center;margin-left:2px;padding:2px;transition:all .15s;display:flex}.form-file-tab-close:hover{color:#dc2626;background:#dc262626}.btn-add-file{border:1px dashed var(--glass-border);color:var(--text-muted);cursor:pointer;white-space:nowrap;background:#0f172a05;border-radius:6px;justify-content:center;align-items:center;gap:4px;padding:6px 12px;font-size:.82rem;transition:all .2s;display:flex}.btn-add-file:hover{border-color:var(--primary);color:var(--primary);background:#2563eb14}.form-attachment-upload-zone{margin-top:4px}.attachment-upload-btn-label{border:1px dashed var(--glass-border);color:var(--text-secondary);cursor:pointer;background:#0f172a08;border-radius:8px;justify-content:center;align-items:center;padding:16px;font-size:.88rem;transition:all .2s;display:flex}.attachment-upload-btn-label:hover{border-color:var(--primary);color:var(--primary);background:#2563eb0d}.form-attachment-upload-zone.dragging .attachment-upload-btn-label{transform:scale(1.02);box-shadow:0 0 15px #2563eb26;border-color:var(--primary)!important;color:var(--primary)!important;background:#2563eb1a!important;border-style:solid!important}.form-attachments-list{flex-direction:column;gap:8px;margin-top:8px;display:flex}.form-attachment-item{border:1px solid var(--glass-border);background:#0f172a05;border-radius:6px;justify-content:space-between;align-items:center;padding:8px 12px;font-size:.85rem;display:flex}.form-attachment-name{color:var(--text-secondary);text-overflow:ellipsis;white-space:nowrap;max-width:70%;overflow:hidden}.form-attachment-size{color:var(--text-muted);font-size:.78rem}.form-attachment-delete-btn{color:var(--text-muted);cursor:pointer;background:0 0;border:none;border-radius:4px;justify-content:center;align-items:center;padding:4px;transition:all .15s;display:flex}.form-attachment-delete-btn:hover{color:#dc2626;background:#dc26261a}.code-viewer-attachments-section{border-bottom:1px solid var(--glass-border);background:#0f172a05;padding:24px}.code-viewer-attachments-section h4{color:var(--text-primary);margin-bottom:16px;font-size:.95rem;font-weight:600}.attachments-grid{grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:16px;display:grid}.attachment-viewer-card{border:1px solid var(--glass-border);background:#fff9;border-radius:10px;flex-direction:column;gap:10px;padding:12px;transition:all .2s;display:flex}.attachment-viewer-card:hover{background:#fff;border-color:#0f172a26;transform:translateY(-2px);box-shadow:0 4px 15px #0f172a0a}.attachment-image-preview-wrapper{background:#0f172a0a;border-radius:6px;justify-content:center;align-items:center;height:100px;display:flex;overflow:hidden}.attachment-image-preview{object-fit:contain;cursor:pointer;max-width:100%;max-height:100%;transition:transform .2s}.attachment-image-preview:hover{transform:scale(1.05)}.attachment-file-icon-wrapper{background:#0f172a08;border-radius:6px;justify-content:center;align-items:center;height:100px;display:flex}.attachment-card-info{flex-direction:column;gap:2px;display:flex}.attachment-card-name{color:var(--text-secondary);text-overflow:ellipsis;white-space:nowrap;max-width:100%;font-size:.82rem;font-weight:500;overflow:hidden}.attachment-card-size{color:var(--text-muted);font-size:.72rem}.btn-download-attachment{color:var(--primary);cursor:pointer;background:#2563eb0d;border:1px solid #2563eb26;border-radius:6px;justify-content:center;align-items:center;gap:4px;padding:6px 12px;font-size:.8rem;font-weight:500;transition:all .2s;display:flex}.btn-download-attachment:hover{background:var(--primary);border-color:var(--primary);color:#fff;box-shadow:0 0 8px #2563eb26}.input-edit-title{background:var(--input-bg);border:1px solid var(--glass-border);color:var(--text-primary);border-radius:8px;outline:none;width:160px;padding:6px 12px;font-size:.95rem;font-weight:600;transition:all .2s}.input-edit-title:focus{border-color:var(--primary);background:var(--glass-bg)}.input-edit-subtitle{background:var(--input-bg);border:1px solid var(--glass-border);color:var(--text-secondary);border-radius:8px;outline:none;width:160px;padding:6px 12px;font-size:.85rem;transition:all .2s}.input-edit-subtitle:focus{border-color:var(--primary);background:var(--glass-bg)}.btn-secondary-title{background:var(--btn-sec-hover-bg);color:var(--text-secondary);cursor:pointer;border:none;border-radius:6px;padding:6px 14px;font-size:.82rem;font-weight:500;transition:all .2s}.btn-secondary-title:hover{background:var(--glass-border-active);color:var(--text-primary)}:root{--apple-ease:cubic-bezier(.16, 1, .3, 1);--apple-transition:all .5s var(--apple-ease)}.course-card,.task-item,.btn-primary,.btn-secondary,.btn-danger,.btn-theme-toggle,.theme-toggle-btn,.form-control input,.form-control select,.form-control textarea,.modal-overlay,.modal-content,.logo-badge,.code-tab,.btn-edit-title,.course-detail-sidebar,.code-viewer-container,.attachment-viewer-card{transition:var(--apple-transition)!important}.course-card:hover{border-color:var(--primary)!important;transform:scale(1.01)translateY(-3px)!important;box-shadow:0 12px 30px #0f172a0f!important}body:not(.light-theme) .course-card:hover{box-shadow:0 12px 30px #0006!important}.task-item:hover{transform:scale(1.02)translate(4px)!important}.task-item:active{transition:transform .1s!important;transform:scale(.97)translate(2px)!important}.btn-primary:hover,.btn-danger:hover{transform:scale(1.03)translateY(-1px)}.btn-primary:active,.btn-danger:active{transform:scale(.97)translateY(0)}@keyframes apple-modal-appear{0%{opacity:0;transform:scale(.92)translateY(30px)}to{opacity:1;transform:scale(1)translateY(0)}}@keyframes apple-panel-appear{0%{opacity:0;transform:translateY(12px)scale(.995)}to{opacity:1;transform:translateY(0)scale(1)}}.modal-content{animation:apple-modal-appear .5s var(--apple-ease) forwards}@keyframes apple-page-load{0%{opacity:0;transform:translateY(16px)}to{opacity:1;transform:translateY(0)}}.layout-container,.courses-grid,.course-detail-container{animation:apple-page-load .65s var(--apple-ease) forwards}@keyframes skeleton-shimmer{0%{background-position:-200% 0}to{background-position:200% 0}}.skeleton-card,.skeleton-task-item,.skeleton-code-panel{pointer-events:none}.skeleton-title,.skeleton-badge,.skeleton-line,.skeleton-avatar,.skeleton-meta{background:linear-gradient(90deg,#ffffff08 25%,#ffffff14 37%,#ffffff08 63%) 0 0/400% 100%;border-radius:4px;animation:1.4s infinite skeleton-shimmer}.light-theme .skeleton-title,.light-theme .skeleton-badge,.light-theme .skeleton-line,.light-theme .skeleton-avatar,.light-theme .skeleton-meta{background:linear-gradient(90deg,#e2e8f0 25%,#f1f5f9 37%,#e2e8f0 63%) 0 0/400% 100%}.skeleton-title{border-radius:6px;width:140px;height:22px}.skeleton-badge{border-radius:4px;width:60px;height:18px}.skeleton-desc{flex-direction:column;flex-grow:1;gap:8px;margin-top:16px;display:flex}.skeleton-line{border-radius:4px;height:12px}.skeleton-line.short{width:35%}.skeleton-line.long{width:80%}.skeleton-footer{align-items:center;gap:10px;margin-top:auto;display:flex}.skeleton-avatar{border-radius:50%;width:24px;height:24px}.skeleton-meta{width:80px;height:12px}