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cubic-bezier(.16,1,.3,1),box-shadow .2s cubic-bezier(.16,1,.3,1),background-color .4s;display:flex}.brutal-card:hover{box-shadow:16px 16px 0 var(--border-color);transform:translate(-4px,-4px)}[data-theme=dark] .brutal-card:hover{box-shadow:16px 16px 0 var(--border-color)}.badge{color:var(--accent-blue);text-transform:uppercase;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);background:#3b82f626;border:1px solid #3b82f64d;border-radius:9999px;padding:.3rem .8rem;font-size:.8rem;font-weight:700;transition:all .2s cubic-bezier(.16,1,.3,1);display:inline-block}.badge:hover{background:#3b82f640;transform:translateY(-2px)}.input-group{margin-bottom:1.5rem}.input-label{background:var(--accent-yellow);border:3px solid var(--border-color);color:#000;text-transform:uppercase;margin-bottom:.5rem;padding:.25rem .75rem;font-size:.9rem;font-weight:800;display:inline-block}.form-input{background:var(--input-bg);border:4px solid var(--border-color);width:100%;color:var(--text-primary);box-shadow:var(--shadow-sm);padding:.875rem 1rem;font-family:inherit;font-size:1rem;font-weight:600;transition:all .2s}.form-input:focus{box-shadow:var(--shadow-md);outline:none;transform:translate(-2px,-2px)}.form-input::placeholder{color:var(--text-secondary);font-weight:500}.form-textarea{resize:vertical;min-height:100px}.btn{cursor:pointer;border:4px solid var(--border-color);box-shadow:var(--shadow-sm);text-transform:uppercase;color:var(--text-primary);letter-spacing:.5px;background:var(--card-bg);justify-content:center;align-items:center;gap:.5rem;padding:.75rem 1.5rem;font-family:inherit;font-size:.95rem;font-weight:800;text-decoration:none;transition:transform .15s cubic-bezier(.16,1,.3,1),box-shadow .15s cubic-bezier(.16,1,.3,1);display:inline-flex}.btn:hover{box-shadow:var(--shadow-md);transform:translate(-3px,-3px)}.btn:active{box-shadow:2px 2px 0 var(--border-color);transform:translate(2px,2px)}.btn-primary{background:var(--primary-btn);color:#fff}.btn-primary:hover{transform:translate(-3px,-3px)}.btn-secondary{background:var(--card-bg)}.btn-accent{background:var(--accent-yellow);color:#000}.btn-accent-green{background:var(--accent-green);color:#000}.btn-accent-cyan{background:var(--accent-cyan);color:#000}.btn-accent-pink{background:var(--accent-pink);color:#fff}.btn-accent-blue{background:var(--accent-blue);color:#fff}.btn-accent-purple{background:var(--accent-purple);color:#fff}.btn-danger{background:var(--danger-btn);color:#fff}.btn-logout{color:#fff;background:#ff3d00}.btn-sm{box-shadow:3px 3px 0 var(--border-color);border-width:2px;border-radius:8px;padding:.5rem .875rem;font-size:.8rem}.btn-sm:hover{box-shadow:5px 5px 0 var(--border-color)}.btn-icon{padding:.5rem .7rem;font-size:1rem;line-height:1}.login-container{justify-content:center;align-items:center;min-height:100vh;padding:2rem;display:flex;position:relative;overflow:hidden}.login-container:before,.login-container:after{content:"";filter:blur(100px);z-index:-1;opacity:.6;border-radius:50%;width:50vw;height:50vw;animation:25s ease-in-out infinite alternate floatOrb;position:absolute}.login-container:before{background:radial-gradient(circle,var(--accent-purple) 0%,transparent 70%);animation-delay:-5s;top:-20vh;left:-20vw}.login-container:after{background:radial-gradient(circle,var(--accent-cyan) 0%,transparent 70%);animation-direction:alternate-reverse;bottom:-20vh;right:-20vw}[data-theme=dark] .login-container:before,[data-theme=dark] .login-container:after{opacity:.3}.login-theme-toggle{z-index:100;position:fixed;top:1.5rem;right:1.5rem}.login-card{text-align:center;background:var(--card-bg);-webkit-backdrop-filter:blur(20px);width:100%;max-width:460px;box-shadow:var(--shadow-xl);transition:var(--transition-theme);border:2px solid #fff6;border-radius:24px;flex-direction:column;align-items:center;padding:4rem 3rem;display:flex}[data-theme=dark] .login-card{background:var(--card-bg);color:var(--text-primary);border-color:#ffffff1a;box-shadow:0 16px 40px #00000080,inset 0 1px 1px #ffffff0d}.login-logo{margin-bottom:.5rem;animation:4s ease-in-out infinite float;display:inline-block}.login-logo img{filter:drop-shadow(0 10px 15px #0003);width:90px;height:90px}.login-title{justify-content:center;align-items:center;gap:.3rem;margin-bottom:1.5rem;font-size:2.75rem;display:flex}.login-subtitle{color:var(--text-secondary);margin-bottom:2.5rem;padding:.6rem 2rem;font-weight:600}.login-btn{gap:12px;width:100%;padding:1rem;font-size:1rem}.course-page-header{background:var(--card-bg);-webkit-backdrop-filter:blur(12px);box-shadow:var(--shadow-md);border-radius:var(--card-radius);transition:var(--transition-theme);border:2px solid #fff6;grid-template-columns:1fr auto 1fr;align-items:center;margin-bottom:2rem;padding:1.25rem 2rem;display:grid}.course-page-header h1{letter-spacing:-.5px;text-align:center;font-size:1.75rem;font-weight:700}.course-page-header>:first-child{justify-self:start}.course-page-header>:last-child{justify-self:end}.back-btn{cursor:pointer;border:1px solid var(--border-color);background:var(--card-bg);box-shadow:var(--shadow-sm);text-transform:uppercase;color:var(--text-primary);border-radius:8px;flex-shrink:0;align-items:center;gap:.4rem;padding:.5rem 1rem;font-family:inherit;font-size:.85rem;font-weight:600;text-decoration:none;transition:all .2s;display:inline-flex}.back-btn:hover{box-shadow:var(--shadow-md);transform:translate(-2px,-2px)}.back-btn:active{box-shadow:2px 2px 0 var(--border-color);transform:translate(2px,2px)}.add-day-form{background:var(--card-bg-alt);border:1px solid var(--border-color);box-shadow:var(--shadow-sm);border-radius:var(--card-radius);transition:var(--transition-theme);color:var(--text-primary);align-items:center;gap:.75rem;margin-bottom:2rem;padding:1rem 1.25rem;display:flex}.add-day-form input{background:var(--input-bg);border:1px solid var(--border-color);color:var(--text-primary);border-radius:8px;flex:1;padding:.7rem 1rem;font-family:inherit;font-size:.95rem;font-weight:500;transition:all .2s;box-shadow:inset 0 2px 4px #0000000d}.add-day-form input:focus{box-shadow:5px 5px 0 var(--border-color);outline:none;transform:translate(-2px,-2px)}.add-day-form input::placeholder{color:var(--text-secondary)}.course-timeline{margin-top:1rem;padding-left:2.5rem;position:relative}.course-timeline:before{content:"";background:var(--border-color);z-index:0;border-radius:4px;width:4px;position:absolute;top:0;bottom:0;left:.5rem}[data-theme=dark] .course-timeline:before{background:linear-gradient(#38bdf833,#c084fc33)}.timeline-dot{background:var(--card-bg);border:4px solid var(--border-color);z-index:2;width:22px;height:22px;box-shadow:0 0 0 4px var(--bg-color);transition:var(--transition-theme);border-radius:50%;position:absolute;top:1.6rem;left:-2.6rem}.timeline-dot.dot-active{border-color:var(--accent-blue);box-shadow:0 0 15px #38bdf866,0 0 0 4px var(--bg-color)}.timeline-dot.dot-completed{border-color:var(--accent-green);background:var(--accent-green);box-shadow:0 0 15px #34d39966,0 0 0 4px var(--bg-color)}.timeline-dot.dot-locked{border-color:var(--text-secondary);background:var(--card-bg-alt)}.chapter-card{background:var(--card-bg);-webkit-backdrop-filter:blur(12px);border-radius:var(--card-radius);box-shadow:var(--shadow-lg);border:2px solid #fff6;margin-bottom:2rem;transition:transform .2s cubic-bezier(.16,1,.3,1),box-shadow .2s cubic-bezier(.16,1,.3,1),background-color .4s;position:relative;overflow:hidden}.chapter-card:hover{box-shadow:10px 10px 0 var(--border-color);transform:translate(-2px,-2px)}[data-theme=dark] .chapter-card:hover{box-shadow:10px 10px #00000080}.chapter-card.locked{opacity:.55;pointer-events:none}.chapter-header{color:#1a1a2e;justify-content:space-between;align-items:center;gap:1rem;padding:1.25rem 1.5rem;display:flex}.chapter-card .chapter-header{background:var(--card-bg-alt)}.chapter-title{flex:1;align-items:center;gap:.6rem;font-size:1.25rem;font-weight:700;display:flex}.chapter-day-badge{background:linear-gradient(135deg,var(--accent-blue),var(--primary-btn));color:#fff;text-transform:uppercase;letter-spacing:.5px;border-radius:9999px;flex-shrink:0;padding:.2rem .8rem;font-size:.75rem;font-weight:700;box-shadow:0 2px 8px #3b82f64d}.chapter-status{flex-shrink:0;align-items:center;gap:.5rem;display:flex}.status-completed{color:var(--accent-green);background:#10b98126;border:1px solid #10b9814d;border-radius:9999px;padding:.2rem .8rem;font-size:.8rem;font-weight:600}.status-locked{background:var(--card-bg-alt);border:1px solid var(--border-color);color:var(--text-secondary);border-radius:9999px;padding:.2rem .8rem;font-size:.8rem;font-weight:600}.chapter-body{padding:1.25rem 1.5rem}.materials-list{flex-direction:column;gap:.75rem;display:flex}.material-item{background:var(--card-bg-alt);border:2px solid var(--border-color);box-shadow:3px 3px 0 var(--border-color);border-radius:10px;justify-content:space-between;align-items:center;gap:.75rem;padding:.875rem 1rem;transition:all .15s;display:flex}[data-theme=dark] .material-item{box-shadow:3px 3px #0006}.material-item:hover{box-shadow:6px 6px 0 var(--border-color);transform:translate(-3px,-3px)scale(1.01)}.material-info{flex:1;align-items:center;gap:.75rem;min-width:0;display:flex}.material-type-icon{border:2px solid 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var(--border-color);color:#1a1a2e;transition:var(--transition-theme);border-radius:10px;margin-top:.5rem;padding:1rem;font-weight:500;line-height:1.6}.uploader-section{border-top:3px dashed var(--border-color);margin-top:1.25rem;padding-top:1.25rem}.uploader-header{align-items:center;gap:.5rem;margin-bottom:1rem;display:flex}.uploader-header h4{background:var(--accent-lime);border:2px solid var(--border-color);color:#1a1a2e;border-radius:8px;padding:.2rem .75rem;font-size:1rem;font-weight:700;display:inline-block}.uploader-form{flex-direction:column;gap:.75rem;display:flex}.uploader-row{align-items:center;gap:.75rem;display:flex}.uploader-select{background:var(--input-bg);border:3px solid var(--border-color);box-shadow:3px 3px 0 var(--border-color);cursor:pointer;color:var(--text-primary);appearance:none;background-image:url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%231a1a2e' stroke-width='3' 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.875rem;font-family:inherit;font-size:.9rem;font-weight:500;transition:all .15s}.uploader-input:focus{box-shadow:5px 5px 0 var(--border-color);outline:none;transform:translate(-2px,-2px)}.uploader-input::placeholder{color:var(--text-secondary)}.uploader-textarea{background:var(--input-bg);border:3px solid var(--border-color);width:100%;box-shadow:3px 3px 0 var(--border-color);resize:vertical;min-height:80px;color:var(--text-primary);border-radius:10px;padding:.75rem 1rem;font-family:inherit;font-size:.9rem;font-weight:500;transition:all .15s}.uploader-textarea:focus{box-shadow:5px 5px 0 var(--border-color);outline:none;transform:translate(-2px,-2px)}.uploader-textarea::placeholder{color:var(--text-secondary)}.file-input-label{background:var(--card-bg);border:3px solid var(--border-color);box-shadow:3px 3px 0 var(--border-color);cursor:pointer;text-transform:uppercase;color:var(--text-primary);border-radius:10px;align-items:center;gap:.4rem;padding:.6rem 1rem;font-family:inherit;font-size:.85rem;font-weight:700;transition:all .15s;display:inline-flex}.file-input-label:hover{box-shadow:5px 5px 0 var(--border-color);transform:translate(-2px,-2px)}.file-input-label:active{box-shadow:2px 2px 0 var(--border-color);transform:translate(1px,1px)}.file-name{color:var(--text-secondary);padding:.3rem 0;font-size:.85rem;font-weight:500}.viewer-container{max-width:1100px;margin:0 auto;padding:2rem 1.5rem}.viewer-header{background:var(--card-bg);border:3px solid var(--border-color);box-shadow:var(--shadow-lg);border-radius:var(--card-radius);transition:var(--transition-theme);justify-content:space-between;align-items:center;gap:1rem;margin-bottom:1.5rem;padding:1.25rem 1.5rem;display:flex}.viewer-header h2{text-align:center;flex:1;font-size:1.5rem;font-weight:700}.viewer-frame{border:3px solid var(--border-color);border-radius:var(--card-radius);box-shadow:var(--shadow-lg);background:var(--card-bg);transition:var(--transition-theme);overflow:hidden}.viewer-frame iframe{border:none;width:100%;height:82vh;display:block}.empty-state{text-align:center;border:1px solid var(--border-color);color:var(--text-primary);box-shadow:var(--shadow-sm);border-radius:var(--card-radius);transition:var(--transition-theme);background:linear-gradient(135deg,#38bdf80d,#a855f70d);padding:3.5rem 1.5rem;font-weight:500}.empty-state-icon{background:linear-gradient(135deg,var(--accent-blue),var(--accent-purple));-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text;margin-bottom:1rem;font-size:3rem}.loading-container{justify-content:center;align-items:center;min-height:80vh;display:flex}.loading-card{background:var(--accent-yellow);border:3px solid var(--border-color);box-shadow:var(--shadow-lg);border-radius:var(--card-radius);text-align:center;color:#1a1a2e;transition:var(--transition-theme);padding:2.5rem 3rem}.loading-card h2{align-items:center;gap:.75rem;font-size:1.5rem;font-weight:700;display:flex}@keyframes spin{to{transform:rotate(360deg)}}.spinner{animation:1s linear infinite spin;display:inline-block}@keyframes slideUpFade{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@keyframes gradientFlow{0%{background-position:0%}50%{background-position:100%}to{background-position:0%}}@keyframes float{0%{transform:translateY(0)rotate(0)}50%{transform:translateY(-15px)rotate(5deg)}to{transform:translateY(0)rotate(0)}}@keyframes floatOrb{0%{transform:translate(0)scale(1)}33%{transform:translate(15vw,15vh)scale(1.2)}66%{transform:translate(-10vw,20vh)scale(.9)}to{transform:translate(0)scale(1)}}.fade-in{animation:.5s cubic-bezier(.16,1,.3,1) forwards 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--tw-skew-x{syntax:"*";inherits:false}@property --tw-skew-y{syntax:"*";inherits:false}@property --tw-border-style{syntax:"*";inherits:false;initial-value:solid}@property --tw-leading{syntax:"*";inherits:false}@property --tw-font-weight{syntax:"*";inherits:false}@property --tw-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-shadow-color{syntax:"*";inherits:false}@property --tw-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-inset-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-inset-shadow-color{syntax:"*";inherits:false}@property --tw-inset-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-ring-color{syntax:"*";inherits:false}@property --tw-ring-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-inset-ring-color{syntax:"*";inherits:false}@property --tw-inset-ring-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property 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