:root{--color-bg-primary: #f8fafc;--color-bg-secondary: #ffffff;--color-bg-tertiary: #f1f5f9;--color-bg-card: rgba(255, 255, 255, .98);--color-bg-hover: rgba(0, 32, 96, .05);--color-accent-primary: #002060;--color-accent-secondary: #00b4d8;--color-accent-tertiary: #0077b6;--color-accent-gradient: linear-gradient(135deg, #002060 0%, #00b4d8 100%);--color-accent-glow: rgba(0, 180, 216, .25);--color-text-primary: #0f172a;--color-text-secondary: #475569;--color-text-muted: #64748b;--color-success: #059669;--color-warning: #d97706;--color-error: #dc2626;--color-info: #0284c7;--color-admin: #002060;--color-professor: #0077b6;--color-student: #059669;--border-color: rgba(0, 32, 96, .1);--border-color-hover: rgba(0, 180, 216, .4);--shadow-sm: 0 2px 8px rgba(0, 32, 96, .06);--shadow-md: 0 4px 16px rgba(0, 32, 96, .1);--shadow-lg: 0 8px 32px rgba(0, 32, 96, .14);--shadow-glow: 0 0 40px var(--color-accent-glow);--spacing-xs: .25rem;--spacing-sm: .5rem;--spacing-md: 1rem;--spacing-lg: 1.5rem;--spacing-xl: 2rem;--spacing-2xl: 3rem;--radius-sm: .375rem;--radius-md: .5rem;--radius-lg: .75rem;--radius-xl: 1rem;--radius-2xl: 1.5rem;--radius-full: 9999px;--font-display: "Outfit", sans-serif;--font-body: "DM Sans", sans-serif;--font-family: var(--font-body);--font-size-xs: .75rem;--font-size-sm: .875rem;--font-size-base: 1rem;--font-size-lg: 1.125rem;--font-size-xl: 1.25rem;--font-size-2xl: 1.5rem;--font-size-3xl: 2rem;--font-size-4xl: 2.5rem;--transition-fast: .15s ease;--transition-base: .2s ease;--transition-slow: .3s ease;--sidebar-width: 280px;--header-height: 70px;--header-bg: rgba(255, 255, 255, .9)}[data-theme=light]{--color-bg-primary: #f8fafc;--color-bg-secondary: #ffffff;--color-bg-tertiary: #f1f5f9;--color-bg-card: rgba(255, 255, 255, .98);--color-bg-hover: rgba(0, 32, 96, .05);--color-text-primary: #0f172a;--color-text-secondary: #475569;--color-text-muted: #64748b;--border-color: rgba(0, 32, 96, .1);--border-color-hover: rgba(0, 180, 216, .4);--shadow-sm: 0 2px 8px rgba(0, 32, 96, .06);--shadow-md: 0 4px 16px rgba(0, 32, 96, .1);--shadow-lg: 0 8px 32px rgba(0, 32, 96, .14);--header-bg: rgba(255, 255, 255, .9)}[data-theme=dark]{--color-bg-primary: #0f172a;--color-bg-secondary: #1e293b;--color-bg-tertiary: #334155;--color-bg-card: rgba(30, 41, 59, .98);--color-bg-hover: rgba(255, 255, 255, .05);--color-text-primary: #f1f5f9;--color-text-secondary: #cbd5e1;--color-text-muted: #94a3b8;--color-accent-primary: #5b9cf6;--color-accent-secondary: #22d3ee;--color-accent-tertiary: #38bdf8;--color-admin: #5b9cf6;--color-professor: #38bdf8;--color-student: #34d399;--color-success: #34d399;--color-warning: #fbbf24;--color-error: #f87171;--color-info: #38bdf8;--border-color: rgba(255, 255, 255, .1);--border-color-hover: rgba(0, 180, 216, .5);--shadow-sm: 0 2px 8px rgba(0, 0, 0, .3);--shadow-md: 0 4px 16px rgba(0, 0, 0, .4);--shadow-lg: 0 8px 32px rgba(0, 0, 0, .5);--header-bg: rgba(15, 23, 42, .9)}@media (prefers-color-scheme: dark){:root:not([data-theme=light]){--color-bg-primary: #0f172a;--color-bg-secondary: #1e293b;--color-bg-tertiary: #334155;--color-bg-card: rgba(30, 41, 59, .98);--color-bg-hover: rgba(255, 255, 255, .05);--color-text-primary: #f1f5f9;--color-text-secondary: #cbd5e1;--color-text-muted: #94a3b8;--color-accent-primary: #5b9cf6;--color-accent-secondary: #22d3ee;--color-accent-tertiary: #38bdf8;--color-admin: #5b9cf6;--color-professor: #38bdf8;--color-student: #34d399;--color-success: #34d399;--color-warning: #fbbf24;--color-error: #f87171;--color-info: #38bdf8;--border-color: rgba(255, 255, 255, .1);--border-color-hover: rgba(0, 180, 216, .5);--shadow-sm: 0 2px 8px rgba(0, 0, 0, .3);--shadow-md: 0 4px 16px rgba(0, 0, 0, .4);--shadow-lg: 0 8px 32px rgba(0, 0, 0, .5);--header-bg: rgba(15, 23, 42, .9)}}*,*:before,*:after{margin:0;padding:0;box-sizing:border-box}html{font-size:16px;scroll-behavior:smooth}body{font-family:var(--font-family);background:var(--color-bg-primary);color:var(--color-text-primary);line-height:1.6;min-height:100vh;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}#root{min-height:100vh}h1,h2,h3,h4,h5,h6{font-family:var(--font-display);font-weight:600;line-height:1.3;color:var(--color-text-primary)}h1{font-size:var(--font-size-4xl)}h2{font-size:var(--font-size-3xl)}h3{font-size:var(--font-size-2xl)}h4{font-size:var(--font-size-xl)}h5{font-size:var(--font-size-lg)}h6{font-size:var(--font-size-base)}p{color:var(--color-text-secondary)}a{color:var(--color-accent-primary);text-decoration:none;transition:color var(--transition-fast)}a:hover{color:var(--color-accent-secondary)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--spacing-sm);padding:var(--spacing-sm) var(--spacing-lg);font-family:var(--font-family);font-size:var(--font-size-sm);font-weight:500;border:none;border-radius:var(--radius-lg);cursor:pointer;transition:all var(--transition-base);white-space:nowrap}.btn-primary{background:var(--color-accent-gradient);color:#fff;box-shadow:var(--shadow-sm),0 0 20px #0020604d}.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--shadow-md),0 0 30px #00206080}.btn-secondary{background:var(--color-bg-tertiary);color:var(--color-text-primary);border:1px solid var(--border-color)}.btn-secondary:hover{background:var(--color-bg-hover);border-color:var(--border-color-hover)}.btn-danger{background:var(--color-error);color:#fff}.btn-danger:hover{background:#dc2626;transform:translateY(-2px)}.btn-icon{padding:var(--spacing-sm);background:transparent;color:var(--color-text-secondary)}.btn-icon:hover{background:var(--color-bg-hover);color:var(--color-text-primary)}.card{background:var(--color-bg-card);border:1px solid var(--border-color);border-radius:var(--radius-xl);padding:var(--spacing-xl);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);transition:all var(--transition-base)}.card:hover{border-color:var(--border-color-hover);box-shadow:var(--shadow-md)}.card-gradient{background:linear-gradient(135deg,#0020601a,#00b4d81a);border-color:#00206033}.input{width:100%;padding:var(--spacing-md);font-family:var(--font-family);font-size:var(--font-size-base);color:var(--color-text-primary);background:var(--color-bg-tertiary);border:1px solid var(--border-color);border-radius:var(--radius-lg);transition:all var(--transition-base)}.input:focus{outline:none;border-color:var(--color-accent-primary);box-shadow:0 0 0 3px #0020601f}.input::placeholder{color:var(--color-text-muted)}.input-group{display:flex;flex-direction:column;gap:var(--spacing-sm)}.input-group label{font-size:var(--font-size-sm);font-weight:500;color:var(--color-text-secondary)}.select{width:100%;padding:var(--spacing-md);font-family:var(--font-family);font-size:var(--font-size-base);color:var(--color-text-primary);background:var(--color-bg-tertiary);border:1px solid var(--border-color);border-radius:var(--radius-lg);cursor:pointer;-webkit-appearance:none;-moz-appearance:none;appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%2371717a' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right var(--spacing-md) center;background-size:16px;padding-right:40px}.select:focus{outline:none;border-color:var(--color-accent-primary);box-shadow:0 0 0 3px #0020601f}.table-container{overflow-x:auto;border-radius:var(--radius-xl);border:1px solid var(--border-color)}.table{width:100%;border-collapse:collapse}.table th,.table td{padding:var(--spacing-md) var(--spacing-lg);text-align:left;border-bottom:1px solid var(--border-color)}.table th{background:var(--color-bg-tertiary);font-weight:600;font-size:var(--font-size-sm);color:var(--color-text-secondary);text-transform:uppercase;letter-spacing:.05em}.table tr:last-child td{border-bottom:none}.table tr:hover td{background:var(--color-bg-hover)}.badge{display:inline-flex;align-items:center;gap:var(--spacing-xs);padding:var(--spacing-xs) var(--spacing-sm);font-size:var(--font-size-xs);font-weight:500;border-radius:var(--radius-full);text-transform:uppercase;letter-spacing:.05em}.badge-admin{background:#ef444426;color:var(--color-admin)}.badge-professor{background:#3b82f626;color:var(--color-professor)}.badge-student{background:#22c55e26;color:var(--color-student)}.badge-success{background:#22c55e26;color:var(--color-success)}.badge-warning{background:#f59e0b26;color:var(--color-warning)}.flex{display:flex}.flex-col{flex-direction:column}.items-center{align-items:center}.justify-center{justify-content:center}.justify-between{justify-content:space-between}.gap-xs{gap:var(--spacing-xs)}.gap-sm{gap:var(--spacing-sm)}.gap-md{gap:var(--spacing-md)}.gap-lg{gap:var(--spacing-lg)}.gap-xl{gap:var(--spacing-xl)}.text-center{text-align:center}.text-right{text-align:right}.text-muted{color:var(--color-text-muted)}.text-secondary{color:var(--color-text-secondary)}.w-full{width:100%}.h-full{height:100%}.grid{display:grid;gap:var(--spacing-lg)}.grid-cols-2{grid-template-columns:repeat(2,1fr)}.grid-cols-3{grid-template-columns:repeat(3,1fr)}.grid-cols-4{grid-template-columns:repeat(4,1fr)}@media (max-width: 1200px){.grid-cols-4{grid-template-columns:repeat(3,1fr)}}@media (max-width: 900px){.grid-cols-4,.grid-cols-3{grid-template-columns:repeat(2,1fr)}}@media (max-width: 600px){.grid-cols-4,.grid-cols-3,.grid-cols-2{grid-template-columns:1fr}}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}@keyframes slideIn{0%{opacity:0;transform:translate(-20px)}to{opacity:1;transform:translate(0)}}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}@keyframes shimmer{0%{background-position:-200% 0}to{background-position:200% 0}}.animate-fadeIn{animation:fadeIn var(--transition-slow) ease forwards}.animate-slideIn{animation:slideIn var(--transition-slow) ease forwards}.modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:#00206080;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);display:flex;align-items:center;justify-content:center;z-index:1000;padding:var(--spacing-lg)}.modal{background:var(--color-bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius-2xl);max-width:500px;width:100%;max-height:90vh;overflow-y:auto;animation:fadeIn var(--transition-base) ease}.modal-header{display:flex;align-items:center;justify-content:space-between;padding:var(--spacing-xl);border-bottom:1px solid var(--border-color)}.modal-header h3{font-size:var(--font-size-xl)}.modal-body{padding:var(--spacing-xl)}.modal-footer{display:flex;gap:var(--spacing-md);justify-content:flex-end;padding:var(--spacing-xl);border-top:1px solid var(--border-color)}.page-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:var(--spacing-xl);flex-wrap:wrap;gap:var(--spacing-md)}.page-header h1{font-size:var(--font-size-2xl);background:var(--color-accent-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:var(--spacing-2xl);text-align:center;color:var(--color-text-muted)}.empty-state svg{width:64px;height:64px;margin-bottom:var(--spacing-lg);opacity:.5}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:var(--color-bg-secondary)}::-webkit-scrollbar-thumb{background:var(--color-bg-tertiary);border-radius:var(--radius-full)}::-webkit-scrollbar-thumb:hover{background:var(--color-text-muted)}::selection{background:var(--color-accent-primary);color:#fff}.sidebar{position:fixed;left:0;top:0;bottom:0;width:var(--sidebar-width);background:linear-gradient(180deg,#002060,#004a9f);display:flex;flex-direction:column;z-index:100}.sidebar-header{padding:var(--spacing-xl) var(--spacing-xl) var(--spacing-lg)}.logo{display:flex;align-items:center;justify-content:center;background:#ffffff1f;border-radius:var(--radius-2xl);padding:var(--spacing-xl) var(--spacing-2xl, 2rem)}.logo-image{max-width:180px;height:auto}.sidebar-nav{flex:1;padding:var(--spacing-md);display:flex;flex-direction:column;gap:var(--spacing-xs);overflow-y:auto}.nav-item{display:flex;align-items:center;gap:var(--spacing-md);padding:var(--spacing-md) var(--spacing-lg);color:#ffffffbf;border-radius:var(--radius-lg);transition:all var(--transition-base);text-decoration:none}.nav-item:hover{background:#ffffff1a;color:#fff}.nav-item.active{background:#00b4d833;color:#00b4d8}.nav-item.active .nav-icon{color:#00b4d8}.nav-icon{flex-shrink:0}.nav-label{font-weight:500;font-size:var(--font-size-sm)}.nav-chevron{margin-left:auto;opacity:.5;transition:opacity var(--transition-base)}.nav-item:hover .nav-chevron{opacity:.8}.nav-item.active .nav-chevron{opacity:1;color:#00b4d8}.sidebar-bottom{margin-top:auto;padding:var(--spacing-md);border-top:1px solid rgba(255,255,255,.1)}.sidebar-user{padding:var(--spacing-md);display:flex;align-items:center;gap:var(--spacing-md)}.user-avatar{width:40px;height:40px;border-radius:var(--radius-full);overflow:hidden;flex-shrink:0;background:#ffffff26;display:flex;align-items:center;justify-content:center;color:#fffc}.user-avatar img{width:100%;height:100%;object-fit:cover}.user-info{display:flex;flex-direction:column;min-width:0}.user-name{font-weight:600;font-size:var(--font-size-sm);color:#fff;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.user-role{font-size:var(--font-size-xs);font-weight:500;text-transform:uppercase;letter-spacing:.05em;color:#fff9}.sidebar-logout{display:flex;align-items:center;justify-content:center;gap:var(--spacing-sm);width:100%;padding:var(--spacing-md);margin-top:var(--spacing-sm);background:#ffffff14;border:1px solid rgba(255,255,255,.12);border-radius:var(--radius-lg);color:#ffffffd9;font-family:var(--font-family);font-size:var(--font-size-sm);font-weight:500;cursor:pointer;transition:all var(--transition-base)}.sidebar-logout:hover{background:#ffffff26;color:#fff}.sidebar-nav::-webkit-scrollbar{width:4px}.sidebar-nav::-webkit-scrollbar-track{background:transparent}.sidebar-nav::-webkit-scrollbar-thumb{background:#fff3;border-radius:var(--radius-full)}.sidebar-nav::-webkit-scrollbar-thumb:hover{background:#ffffff59}.theme-toggle{display:flex;align-items:center;justify-content:center;width:40px;height:40px;padding:0;background:var(--color-bg-tertiary);border:1px solid var(--border-color);border-radius:var(--radius-full);cursor:pointer;transition:all .3s cubic-bezier(.175,.885,.32,1.275)}.theme-toggle:hover{background:var(--color-bg-hover);border-color:var(--border-color-hover);transform:scale(1.1) rotate(15deg)}.theme-toggle:active{transform:scale(.95)}.theme-toggle-icon{display:flex;align-items:center;justify-content:center;color:var(--color-accent-secondary);transition:transform .3s ease}.theme-toggle:hover .theme-toggle-icon{transform:rotate(-15deg)}[data-theme=dark] .theme-toggle-icon{color:#fbbf24}.header{position:fixed;top:0;left:var(--sidebar-width);right:0;height:var(--header-height);background:var(--header-bg);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border-bottom:1px solid var(--border-color);display:flex;align-items:center;justify-content:space-between;padding:0 var(--spacing-xl);z-index:90}.header-left{flex:1}.header-title{font-size:var(--font-size-xl);font-weight:600;background:var(--color-accent-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.header-center{flex:2;display:flex;justify-content:center}.search-box{position:relative;width:100%;max-width:400px}.search-icon{position:absolute;left:var(--spacing-md);top:50%;transform:translateY(-50%);color:var(--color-text-muted)}.search-input{width:100%;padding:var(--spacing-sm) var(--spacing-lg);padding-left:44px;background:var(--color-bg-tertiary);border:1px solid var(--border-color);border-radius:var(--radius-full);color:var(--color-text-primary);font-size:var(--font-size-sm);transition:all var(--transition-base)}.search-input:focus{outline:none;border-color:var(--color-accent-secondary);box-shadow:0 0 0 3px #00b4d826}.search-input::placeholder{color:var(--color-text-muted)}.header-right{flex:1;display:flex;align-items:center;justify-content:flex-end;gap:var(--spacing-md)}.header-btn{position:relative;width:40px;height:40px;display:flex;align-items:center;justify-content:center;background:transparent;border:none;border-radius:var(--radius-lg);color:var(--color-text-secondary);cursor:pointer;transition:all var(--transition-base)}.header-btn:hover{background:var(--color-bg-hover);color:var(--color-text-primary)}.notification-btn{position:relative}.notification-badge{position:absolute;top:4px;right:4px;width:18px;height:18px;background:var(--color-accent-gradient);border-radius:var(--radius-full);font-size:10px;font-weight:600;display:flex;align-items:center;justify-content:center;color:#fff}.main-layout{display:flex;min-height:100vh}.main-content-wrapper{flex:1;margin-left:var(--sidebar-width);display:flex;flex-direction:column}.main-content{flex:1;padding:var(--spacing-xl);padding-top:calc(var(--header-height) + var(--spacing-xl));background:var(--color-bg-primary);min-height:100vh}.login-page{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:var(--spacing-xl);position:relative;overflow:hidden;background:linear-gradient(135deg,#f5f7fa,#e4e8ec)}.login-background{position:absolute;top:0;right:0;bottom:0;left:0;z-index:0;overflow:hidden}.bg-gradient-1{position:absolute;width:600px;height:600px;background:radial-gradient(circle,rgba(0,180,216,.15) 0%,transparent 70%);top:-200px;left:-200px;filter:blur(40px);animation:floatOrb1 20s ease-in-out infinite}.bg-gradient-2{position:absolute;width:500px;height:500px;background:radial-gradient(circle,rgba(0,32,96,.12) 0%,transparent 70%);bottom:-150px;right:-150px;filter:blur(40px);animation:floatOrb2 25s ease-in-out infinite}.bg-gradient-3{position:absolute;width:450px;height:450px;background:radial-gradient(circle,rgba(0,32,96,.1) 0%,transparent 70%);top:50%;left:50%;transform:translate(-50%,-50%);filter:blur(60px);animation:pulseGlow 8s ease-in-out infinite}.floating-particle{position:absolute;background:linear-gradient(135deg,#00b4d899,#00206066);border-radius:50%;bottom:-20px;animation:floatUp linear infinite}.login-page:before{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background-image:linear-gradient(rgba(0,32,96,.02) 1px,transparent 1px),linear-gradient(90deg,rgba(0,32,96,.02) 1px,transparent 1px);background-size:60px 60px;animation:gridPulse 10s ease-in-out infinite;z-index:0}@keyframes floatOrb1{0%,to{transform:translate(0) scale(1)}25%{transform:translate(50px,30px) scale(1.1)}50%{transform:translate(30px,60px) scale(.95)}75%{transform:translate(-20px,40px) scale(1.05)}}@keyframes floatOrb2{0%,to{transform:translate(0) scale(1)}25%{transform:translate(-40px,-30px) scale(.95)}50%{transform:translate(-60px,20px) scale(1.1)}75%{transform:translate(-20px,-40px) scale(1)}}@keyframes pulseGlow{0%,to{transform:translate(-50%,-50%) scale(1);opacity:.6}50%{transform:translate(-50%,-50%) scale(1.3);opacity:1}}@keyframes floatUp{0%{transform:translateY(0) translate(0) rotate(0);opacity:0}10%{opacity:1}90%{opacity:1}to{transform:translateY(-100vh) translate(30px) rotate(360deg);opacity:0}}@keyframes gridPulse{0%,to{opacity:.5}50%{opacity:.8}}@keyframes slideUp{0%{opacity:0;transform:translateY(40px)}to{opacity:1;transform:translateY(0)}}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.login-container{position:relative;z-index:1;max-width:450px;width:100%;background:#fffffff2;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border:1px solid rgba(0,32,96,.1);border-radius:24px;padding:48px 40px;box-shadow:0 25px 60px #00206026,0 0 0 1px #fffc inset;animation:slideUp .8s cubic-bezier(.16,1,.3,1) forwards;transition:transform .3s ease,box-shadow .3s ease}.login-container:hover{transform:translateY(-4px);box-shadow:0 30px 70px #00206033,0 0 0 1px #ffffffe6 inset,0 0 60px #00b4d814}.login-container:before{content:"";position:absolute;top:-2px;right:-2px;bottom:-2px;left:-2px;background:linear-gradient(135deg,rgba(0,180,216,.3) 0%,transparent 40%,transparent 60%,rgba(0,32,96,.2) 100%);border-radius:26px;z-index:-1;opacity:0;transition:opacity .3s ease}.login-container:hover:before{opacity:1}.login-header{margin-bottom:32px;text-align:center;animation:fadeIn .8s ease .2s backwards}.login-logo{display:flex;justify-content:center;margin-bottom:24px}.login-logo-image{max-width:220px;height:auto;filter:drop-shadow(0 4px 15px rgba(0,32,96,.15));transition:transform .3s ease,filter .3s ease}.login-logo-image:hover{transform:scale(1.05);filter:drop-shadow(0 8px 25px rgba(0,180,216,.25))}.login-header h1{font-size:1.75rem;font-weight:700;background:linear-gradient(135deg,#002060,#00b4d8);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-bottom:8px}.login-header p{font-size:1rem;color:#64748b}.email-login-form{display:flex;flex-direction:column;gap:20px;width:100%;animation:fadeIn .8s ease .4s backwards}.form-group{display:flex;flex-direction:column;gap:8px;transition:transform .2s ease}.form-group:focus-within{transform:translate(4px)}.form-group label{display:flex;align-items:center;gap:8px;color:#374151;font-size:.875rem;font-weight:600;transition:color .2s ease}.form-group:focus-within label{color:#00b4d8}.form-group label svg{color:#002060;transition:transform .2s ease,color .2s ease}.form-group:focus-within label svg{transform:scale(1.15);color:#00b4d8}.form-group input{width:100%;padding:14px 16px;background:#f8fafc;border:2px solid #e2e8f0;border-radius:12px;color:#1e293b;font-size:1rem;transition:all .3s cubic-bezier(.4,0,.2,1);box-sizing:border-box}.form-group input:hover{border-color:#cbd5e1;background:#f1f5f9}.form-group input:focus{outline:none;border-color:#00b4d8;background:#fff;box-shadow:0 0 0 4px #00b4d81f,0 4px 20px #00b4d814}.form-group input::placeholder{color:#94a3b8}.login-btn{display:flex;align-items:center;justify-content:center;gap:8px;width:100%;padding:16px 24px;margin-top:8px;background:linear-gradient(135deg,#002060,#00b4d8);background-size:200% 200%;border:none;border-radius:12px;color:#fff;font-size:1rem;font-weight:600;cursor:pointer;transition:all .3s cubic-bezier(.4,0,.2,1);box-shadow:0 4px 20px #0020604d;position:relative;overflow:hidden;animation:fadeIn .8s ease .6s backwards}.login-btn:before{content:"";position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.25),transparent);transition:left .5s ease}.login-btn:hover:before{left:100%}.login-btn:hover:not(:disabled){transform:translateY(-3px);background-position:100% 50%;box-shadow:0 8px 30px #00206059,0 0 40px #00b4d826}.login-btn:active:not(:disabled){transform:translateY(-1px);box-shadow:0 4px 15px #0020604d}.login-btn:disabled{opacity:.6;cursor:not-allowed;transform:none}.login-btn svg{transition:transform .3s ease}.login-btn:hover:not(:disabled) svg{transform:translate(4px)}.login-error{text-align:center;color:#dc2626;font-size:.875rem;margin-top:16px;padding:12px 16px;background:#fef2f2;border-radius:12px;border:1px solid #fecaca;animation:shakeError .5s ease}@keyframes shakeError{0%,to{transform:translate(0)}20%{transform:translate(-8px)}40%{transform:translate(8px)}60%{transform:translate(-4px)}80%{transform:translate(4px)}}.login-loading{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100vh;gap:16px;color:#002060}.spin{animation:spin 1s cubic-bezier(.68,-.55,.265,1.55) infinite}@media (max-width: 500px){.login-container{padding:32px 24px;margin:16px;border-radius:20px}.login-header h1{font-size:1.5rem}.login-logo-image{max-width:180px}.floating-particle{display:none}}@media (prefers-reduced-motion: reduce){.bg-gradient-1,.bg-gradient-2,.bg-gradient-3,.floating-particle,.login-page:before{animation:none}.login-container{animation:fadeIn .3s ease forwards}.login-container:hover{transform:none}.login-btn:before{display:none}}:root{--react-pdf-annotation-layer: 1;--annotation-unfocused-field-background: url("data:image/svg+xml;charset=UTF-8,<svg width='1px' height='1px' xmlns='http://www.w3.org/2000/svg'><rect width='100%' height='100%' style='fill:rgba(0, 54, 255, 0.13);'/></svg>");--input-focus-border-color: Highlight;--input-focus-outline: 1px solid Canvas;--input-unfocused-border-color: transparent;--input-disabled-border-color: transparent;--input-hover-border-color: black;--link-outline: none}@media screen and (forced-colors: active){:root{--input-focus-border-color: CanvasText;--input-unfocused-border-color: ActiveText;--input-disabled-border-color: GrayText;--input-hover-border-color: Highlight;--link-outline: 1.5px solid LinkText}.annotationLayer .textWidgetAnnotation :is(input,textarea):required,.annotationLayer .choiceWidgetAnnotation select:required,.annotationLayer .buttonWidgetAnnotation:is(.checkBox,.radioButton) input:required{outline:1.5px solid selectedItem}.annotationLayer .linkAnnotation:hover{-webkit-backdrop-filter:invert(100%);backdrop-filter:invert(100%)}}.annotationLayer{position:absolute;top:0;left:0;pointer-events:none;transform-origin:0 0;z-index:3}.annotationLayer[data-main-rotation="90"] .norotate{transform:rotate(270deg) translate(-100%)}.annotationLayer[data-main-rotation="180"] .norotate{transform:rotate(180deg) translate(-100%,-100%)}.annotationLayer[data-main-rotation="270"] .norotate{transform:rotate(90deg) translateY(-100%)}.annotationLayer canvas{position:absolute;width:100%;height:100%}.annotationLayer section{position:absolute;text-align:initial;pointer-events:auto;box-sizing:border-box;margin:0;transform-origin:0 0}.annotationLayer .linkAnnotation{outline:var(--link-outline)}.textLayer.selecting~.annotationLayer section{pointer-events:none}.annotationLayer :is(.linkAnnotation,.buttonWidgetAnnotation.pushButton)>a{position:absolute;font-size:1em;top:0;left:0;width:100%;height:100%}.annotationLayer :is(.linkAnnotation,.buttonWidgetAnnotation.pushButton)>a:hover{opacity:.2;background:#ff0;box-shadow:0 2px 10px #ff0}.annotationLayer .textAnnotation img{position:absolute;cursor:pointer;width:100%;height:100%;top:0;left:0}.annotationLayer .textWidgetAnnotation :is(input,textarea),.annotationLayer .choiceWidgetAnnotation select,.annotationLayer .buttonWidgetAnnotation:is(.checkBox,.radioButton) input{background-image:var(--annotation-unfocused-field-background);border:2px solid var(--input-unfocused-border-color);box-sizing:border-box;font:calc(9px * var(--total-scale-factor)) sans-serif;height:100%;margin:0;vertical-align:top;width:100%}.annotationLayer .textWidgetAnnotation :is(input,textarea):required,.annotationLayer .choiceWidgetAnnotation select:required,.annotationLayer .buttonWidgetAnnotation:is(.checkBox,.radioButton) input:required{outline:1.5px solid red}.annotationLayer .choiceWidgetAnnotation select option{padding:0}.annotationLayer .buttonWidgetAnnotation.radioButton input{border-radius:50%}.annotationLayer .textWidgetAnnotation textarea{resize:none}.annotationLayer .textWidgetAnnotation :is(input,textarea)[disabled],.annotationLayer .choiceWidgetAnnotation select[disabled],.annotationLayer .buttonWidgetAnnotation:is(.checkBox,.radioButton) input[disabled]{background:none;border:2px solid var(--input-disabled-border-color);cursor:not-allowed}.annotationLayer .textWidgetAnnotation :is(input,textarea):hover,.annotationLayer .choiceWidgetAnnotation select:hover,.annotationLayer .buttonWidgetAnnotation:is(.checkBox,.radioButton) input:hover{border:2px solid var(--input-hover-border-color)}.annotationLayer .textWidgetAnnotation :is(input,textarea):hover,.annotationLayer .choiceWidgetAnnotation select:hover,.annotationLayer .buttonWidgetAnnotation.checkBox input:hover{border-radius:2px}.annotationLayer .textWidgetAnnotation :is(input,textarea):focus,.annotationLayer .choiceWidgetAnnotation select:focus{background:none;border:2px solid var(--input-focus-border-color);border-radius:2px;outline:var(--input-focus-outline)}.annotationLayer .buttonWidgetAnnotation:is(.checkBox,.radioButton) :focus{background-image:none;background-color:transparent}.annotationLayer .buttonWidgetAnnotation.checkBox :focus{border:2px solid var(--input-focus-border-color);border-radius:2px;outline:var(--input-focus-outline)}.annotationLayer .buttonWidgetAnnotation.radioButton :focus{border:2px solid var(--input-focus-border-color);outline:var(--input-focus-outline)}.annotationLayer .buttonWidgetAnnotation.checkBox input:checked:before,.annotationLayer .buttonWidgetAnnotation.checkBox input:checked:after,.annotationLayer .buttonWidgetAnnotation.radioButton input:checked:before{background-color:CanvasText;content:"";display:block;position:absolute}.annotationLayer .buttonWidgetAnnotation.checkBox input:checked:before,.annotationLayer .buttonWidgetAnnotation.checkBox input:checked:after{height:80%;left:45%;width:1px}.annotationLayer .buttonWidgetAnnotation.checkBox input:checked:before{transform:rotate(45deg)}.annotationLayer .buttonWidgetAnnotation.checkBox input:checked:after{transform:rotate(-45deg)}.annotationLayer .buttonWidgetAnnotation.radioButton input:checked:before{border-radius:50%;height:50%;left:30%;top:20%;width:50%}.annotationLayer .textWidgetAnnotation input.comb{font-family:monospace;padding-left:2px;padding-right:0}.annotationLayer .textWidgetAnnotation input.comb:focus{width:103%}.annotationLayer .buttonWidgetAnnotation:is(.checkBox,.radioButton) input{-webkit-appearance:none;-moz-appearance:none;appearance:none}.annotationLayer .popupTriggerArea{height:100%;width:100%}.annotationLayer .fileAttachmentAnnotation .popupTriggerArea{position:absolute}.annotationLayer .popupWrapper{position:absolute;font-size:calc(9px * var(--total-scale-factor));width:100%;min-width:calc(180px * var(--total-scale-factor));pointer-events:none}.annotationLayer .popup{position:absolute;max-width:calc(180px * var(--total-scale-factor));background-color:#ff9;box-shadow:0 calc(2px * var(--total-scale-factor)) calc(5px * var(--total-scale-factor)) #888;border-radius:calc(2px * var(--total-scale-factor));padding:calc(6px * var(--total-scale-factor));margin-left:calc(5px * var(--total-scale-factor));cursor:pointer;font:message-box;white-space:normal;word-wrap:break-word;pointer-events:auto}.annotationLayer .popup>*{font-size:calc(9px * var(--total-scale-factor))}.annotationLayer .popup h1{display:inline-block}.annotationLayer .popupDate{display:inline-block;margin-left:calc(5px * var(--total-scale-factor))}.annotationLayer .popupContent{border-top:1px solid rgba(51,51,51,1);margin-top:calc(2px * var(--total-scale-factor));padding-top:calc(2px * var(--total-scale-factor))}.annotationLayer .richText>*{white-space:pre-wrap;font-size:calc(9px * var(--total-scale-factor))}.annotationLayer .highlightAnnotation,.annotationLayer .underlineAnnotation,.annotationLayer .squigglyAnnotation,.annotationLayer .strikeoutAnnotation,.annotationLayer .freeTextAnnotation,.annotationLayer .lineAnnotation svg line,.annotationLayer .squareAnnotation svg rect,.annotationLayer .circleAnnotation svg ellipse,.annotationLayer .polylineAnnotation svg polyline,.annotationLayer .polygonAnnotation svg polygon,.annotationLayer .caretAnnotation,.annotationLayer .inkAnnotation svg polyline,.annotationLayer .stampAnnotation,.annotationLayer .fileAttachmentAnnotation{cursor:pointer}.annotationLayer section svg{position:absolute;width:100%;height:100%;top:0;left:0}.annotationLayer .annotationTextContent{position:absolute;width:100%;height:100%;opacity:0;color:transparent;-webkit-user-select:none;user-select:none;pointer-events:none}.annotationLayer .annotationTextContent span{width:100%;display:inline-block}:root{--react-pdf-text-layer: 1;--highlight-bg-color: rgba(180, 0, 170, 1);--highlight-selected-bg-color: rgba(0, 100, 0, 1)}@media screen and (forced-colors: active){:root{--highlight-bg-color: Highlight;--highlight-selected-bg-color: ButtonText}}[data-main-rotation="90"]{transform:rotate(90deg) translateY(-100%)}[data-main-rotation="180"]{transform:rotate(180deg) translate(-100%,-100%)}[data-main-rotation="270"]{transform:rotate(270deg) translate(-100%)}.textLayer{position:absolute;text-align:initial;top:0;right:0;bottom:0;left:0;overflow:hidden;line-height:1;text-size-adjust:none;forced-color-adjust:none;transform-origin:0 0;z-index:2}.textLayer :is(span,br){color:transparent;position:absolute;white-space:pre;cursor:text;margin:0;transform-origin:0 0}.textLayer span.markedContent{top:0;height:0}.textLayer .highlight{margin:-1px;padding:1px;background-color:var(--highlight-bg-color);border-radius:4px}.textLayer .highlight.appended{position:initial}.textLayer .highlight.begin{border-radius:4px 0 0 4px}.textLayer .highlight.end{border-radius:0 4px 4px 0}.textLayer .highlight.middle{border-radius:0}.textLayer .highlight.selected{background-color:var(--highlight-selected-bg-color)}.textLayer br::selection{background:transparent}.textLayer .endOfContent{display:block;position:absolute;top:100%;right:0;bottom:0;left:0;z-index:-1;cursor:default;-webkit-user-select:none;user-select:none}.textLayer.selecting .endOfContent{top:0}.hiddenCanvasElement{position:absolute;top:0;left:0;width:0;height:0;display:none}.book-reader{height:100vh;display:flex;flex-direction:column;background:linear-gradient(135deg,#1a1a2e,#16213e);overflow:hidden;-webkit-user-select:none;user-select:none}.book-reader.fullscreen{position:fixed;top:0;left:0;right:0;bottom:0;z-index:9999}.reader-header{display:flex;align-items:center;gap:var(--spacing-md);padding:var(--spacing-sm) var(--spacing-lg);background:#0000004d;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid rgba(255,255,255,.1);z-index:10}.reader-title{flex:1;min-width:0}.reader-title h1{font-size:1rem;font-weight:600;color:#fff;margin:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.reader-author{font-size:.8rem;color:#fff9}.reader-controls{display:flex;gap:var(--spacing-sm);align-items:center}.control-divider{width:1px;height:24px;background:#fff3}.zoom-controls{display:flex;align-items:center;gap:4px;background:#ffffff1a;padding:4px 8px;border-radius:var(--radius-md)}.zoom-level{font-size:.8rem;color:#fff;min-width:45px;text-align:center}.zoom-controls .btn-icon{color:#fff}.zoom-controls .btn-icon:disabled{opacity:.3}.reader-content{flex:1;display:flex;align-items:center;justify-content:center;padding:var(--spacing-md);perspective:2000px;overflow:auto;min-height:0}.book-container{display:flex;align-items:center;justify-content:center;gap:var(--spacing-md);opacity:0;transform:scale(.9) rotateX(10deg);transition:all .8s cubic-bezier(.4,0,.2,1)}.book-container.open{opacity:1;transform:scale(1) rotateX(0)}.nav-arrow{display:flex;align-items:center;justify-content:center;width:50px;height:80px;background:#ffffff1a;border:none;border-radius:var(--radius-lg);color:#fff;cursor:pointer;transition:all .3s;-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px)}.nav-arrow:hover:not(:disabled){background:#fff3;transform:scale(1.05)}.nav-arrow:disabled{opacity:.3;cursor:not-allowed}.book-spread{display:flex;align-items:stretch;transform-style:preserve-3d;box-shadow:0 30px 60px #00000080,0 10px 20px #0000004d;border-radius:4px}.book-spread .react-pdf__Document{display:flex!important;flex-direction:row!important;align-items:stretch;gap:0}.book-spread>*{display:flex;flex-direction:row;align-items:stretch}.book-spread .react-pdf__Document>*{flex-shrink:0}.book-page{position:relative;background:#fff;overflow:hidden;transform-style:preserve-3d;transition:transform .6s cubic-bezier(.4,0,.2,1)}.book-spread.single-page,.book-spread.single-page .react-pdf__Document{justify-content:center}.cover-page{border-radius:4px;box-shadow:0 10px 30px #0006,0 5px 15px #0003}.cover-shadow{position:absolute;top:0;right:-20px;width:20px;height:100%;background:linear-gradient(to right,rgba(0,0,0,.15),transparent);pointer-events:none}.book-container.cover-mode .book-spread{box-shadow:0 20px 50px #00000080,0 10px 25px #0000004d}.left-page{border-radius:4px 0 0 4px;transform-origin:right center}.right-page{border-radius:0 4px 4px 0;transform-origin:left center}.page-inner{position:relative;display:flex;align-items:center;justify-content:center;overflow:hidden}.page-inner canvas{display:block!important}.hd-page .react-pdf__Page{transform-origin:top left}.hd-page .react-pdf__Page canvas{image-rendering:high-quality;image-rendering:-webkit-optimize-contrast}.page-number{display:none}.page-shadow{position:absolute;top:0;bottom:0;width:30px;pointer-events:none}.left-shadow{right:0;background:linear-gradient(to left,rgba(0,0,0,.15),transparent)}.right-shadow{left:0;background:linear-gradient(to right,rgba(0,0,0,.15),transparent)}.book-spine{width:8px;background:linear-gradient(90deg,#444,#666 20%,#555,#666 80%,#444);box-shadow:inset 0 0 10px #00000080,0 0 5px #0000004d}.book-spread{perspective:2500px}.book-page{backface-visibility:hidden}.book-spread.flipping-next .right-page{animation:flipPageNext .8s ease-in-out forwards}.book-spread.flipping-prev .left-page{animation:flipPagePrev .8s ease-in-out forwards}.book-page:after{content:"";position:absolute;top:0;left:0;right:0;bottom:0;background:linear-gradient(to right,rgba(0,0,0,.2),transparent 50%,rgba(0,0,0,.1));opacity:0;transition:opacity .3s;pointer-events:none}.book-spread.flipping-next .right-page:after,.book-spread.flipping-prev .left-page:after{animation:flipShadow .8s ease-in-out forwards}@keyframes flipPageNext{0%{transform:perspective(2500px) rotateY(0);z-index:10;box-shadow:0 5px 20px #0003}25%{transform:perspective(2500px) rotateY(-30deg) translate(-10px);z-index:10;box-shadow:10px 5px 40px #0006}50%{transform:perspective(2500px) rotateY(-90deg) translate(-20px);z-index:10;box-shadow:20px 5px 60px #00000080}51%{transform:perspective(2500px) rotateY(-90deg) translate(-20px);z-index:0}75%{transform:perspective(2500px) rotateY(-150deg) translate(-10px);z-index:0;box-shadow:10px 5px 40px #0000004d}to{transform:perspective(2500px) rotateY(-180deg) translate(0);z-index:0;box-shadow:0 5px 20px #0000001a}}@keyframes flipPagePrev{0%{transform:perspective(2500px) rotateY(0);z-index:10;box-shadow:0 5px 20px #0003}25%{transform:perspective(2500px) rotateY(30deg) translate(10px);z-index:10;box-shadow:-10px 5px 40px #0006}50%{transform:perspective(2500px) rotateY(90deg) translate(20px);z-index:10;box-shadow:-20px 5px 60px #00000080}51%{transform:perspective(2500px) rotateY(90deg) translate(20px);z-index:0}75%{transform:perspective(2500px) rotateY(150deg) translate(10px);z-index:0;box-shadow:-10px 5px 40px #0000004d}to{transform:perspective(2500px) rotateY(180deg) translate(0);z-index:0;box-shadow:0 5px 20px #0000001a}}@keyframes flipShadow{0%{opacity:0}50%{opacity:1}to{opacity:0}}.preload-container{position:absolute;left:-9999px;top:-9999px;opacity:0;pointer-events:none;visibility:hidden}.preload-page{position:absolute}.page-loading-overlay{position:absolute;top:0;left:0;right:0;bottom:0;display:flex;align-items:center;justify-content:center;background:#0d1117b3;-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px);z-index:100;color:var(--color-accent-primary)}.page-loading{display:flex;align-items:center;justify-content:center;min-width:300px;min-height:400px;background:#f9f9f9;color:var(--color-accent-primary)}.page-error{display:flex;align-items:center;justify-content:center;min-width:300px;min-height:400px;background:#fff;color:#c00;font-size:.9rem}.reader-footer{display:flex;align-items:center;justify-content:space-between;padding:var(--spacing-sm) var(--spacing-lg);background:#0000004d;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-top:1px solid rgba(255,255,255,.1)}.reader-info{display:flex;align-items:center;gap:var(--spacing-md)}.page-indicator{color:#fffc;font-size:.9rem}.reader-shortcuts{display:flex;gap:var(--spacing-md)}.reader-shortcuts span{font-size:.75rem;color:#ffffff80;padding:2px 8px;background:#ffffff1a;border-radius:var(--radius-sm)}.book-reader-loading,.book-reader-error{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100vh;gap:var(--spacing-md);background:linear-gradient(135deg,#1a1a2e,#16213e);color:#ffffffb3}.book-reader-loading .spin{color:var(--color-accent-primary);animation:spin 1s linear infinite}.book-reader-error h2{color:#fff;margin:0}.book-reader-error svg{color:#ffffff80}@media (max-width: 900px){.book-spread{flex-direction:column}.book-spine{width:100%;height:4px}.left-page,.right-page{border-radius:4px}.left-shadow,.right-shadow{display:none}}@media (max-width: 600px){.reader-header{padding:var(--spacing-xs) var(--spacing-sm)}.reader-title h1{font-size:.875rem}.nav-arrow{width:36px;height:60px}.reader-shortcuts,.zoom-controls{display:none}}.page-banner{position:relative;display:flex;align-items:center;justify-content:space-between;padding:var(--spacing-xl) var(--spacing-2xl);background:linear-gradient(135deg,#002060,#004a9f,#00b4d8);border-radius:var(--radius-2xl);margin-bottom:var(--spacing-xl);overflow:hidden;min-height:120px}.page-banner-bg{position:absolute;top:0;right:0;bottom:0;left:0;pointer-events:none}.page-banner-dot{position:absolute;border-radius:50%;background:#ffffff0f}.page-banner-dot-1{width:200px;height:200px;top:-60px;right:10%}.page-banner-dot-2{width:120px;height:120px;bottom:-40px;right:25%}.page-banner-dot-3{width:80px;height:80px;top:50%;right:40%;transform:translateY(-50%)}.page-banner-content{position:relative;display:flex;align-items:center;gap:var(--spacing-lg);z-index:1}.page-banner-icon{width:56px;height:56px;display:flex;align-items:center;justify-content:center;background:#ffffff1f;border-radius:var(--radius-lg);color:#ffffffe6;flex-shrink:0;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}.page-banner-info{display:flex;flex-direction:column;gap:4px}.page-banner-title{font-size:var(--font-size-2xl);font-weight:700;color:#fff;background:none;-webkit-text-fill-color:#ffffff}.page-banner-subtitle{font-size:var(--font-size-sm);color:#ffffffbf}.page-banner-date{display:flex;align-items:center;gap:var(--spacing-xs);font-size:var(--font-size-xs);color:#fff9;margin-top:2px}.page-banner-actions{position:relative;z-index:1;display:flex;gap:var(--spacing-md)}.page-banner-actions .btn{background:#fff;color:#002060;border:none;font-weight:600;box-shadow:0 4px 12px #00000026}.page-banner-actions .btn:hover{transform:translateY(-2px);box-shadow:0 6px 20px #0003}@media (max-width: 768px){.page-banner{flex-direction:column;align-items:flex-start;gap:var(--spacing-lg);padding:var(--spacing-lg)}.page-banner-actions,.page-banner-actions .btn{width:100%}}.book-filters{margin-bottom:var(--spacing-xl)}.filters-main{display:flex;gap:var(--spacing-md);align-items:center;flex-wrap:wrap}.search-filter{position:relative;flex:1;min-width:250px;max-width:400px}.search-filter .search-icon{position:absolute;left:var(--spacing-md);top:50%;transform:translateY(-50%);color:var(--color-text-muted)}.search-filter .search-input{width:100%;padding:var(--spacing-sm) var(--spacing-lg);padding-left:44px;background:var(--color-bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius-lg);color:var(--color-text-primary);font-size:var(--font-size-sm);transition:all var(--transition-base)}.search-filter .search-input:focus{outline:none;border-color:var(--color-accent-primary);box-shadow:0 0 0 3px #0020601f}.filter-toggle{display:flex;align-items:center;gap:var(--spacing-sm);padding:var(--spacing-sm) var(--spacing-lg);background:var(--color-bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius-lg);color:var(--color-text-secondary);font-size:var(--font-size-sm);font-weight:500;cursor:pointer;transition:all var(--transition-base);position:relative}.filter-toggle:hover{border-color:var(--color-accent-primary);color:var(--color-accent-primary)}.filter-toggle.active{background:var(--color-accent-primary);border-color:var(--color-accent-primary);color:#fff}.filter-toggle.has-filters .filter-badge{position:absolute;top:-4px;right:-4px;width:10px;height:10px;background:var(--color-accent-tertiary);border-radius:50%}.clear-filters{display:flex;align-items:center;gap:var(--spacing-xs);padding:var(--spacing-sm) var(--spacing-md);background:transparent;border:none;color:var(--color-error);font-size:var(--font-size-sm);font-weight:500;cursor:pointer;transition:all var(--transition-base)}.clear-filters:hover{text-decoration:underline}.filters-expanded{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:var(--spacing-md);margin-top:var(--spacing-lg);padding:var(--spacing-lg);background:var(--color-bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius-xl);animation:fadeIn var(--transition-base) ease}.filter-group{display:flex;flex-direction:column;gap:var(--spacing-xs)}.filter-group label{font-size:var(--font-size-xs);font-weight:600;color:var(--color-text-secondary);text-transform:uppercase;letter-spacing:.05em}.filter-group .select{padding:var(--spacing-sm) var(--spacing-md);font-size:var(--font-size-sm)}.manage-books{max-width:1400px;margin:0 auto}.books-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:var(--spacing-lg);padding:var(--spacing-md) 0}.book-card-header{display:flex;justify-content:space-between;align-items:flex-start;gap:var(--spacing-sm)}.book-name{font-weight:600;font-size:var(--font-size-md);color:var(--color-text-primary);line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.book-card-footer{margin-top:auto;padding-top:var(--spacing-md);border-top:1px solid var(--border-color);display:flex;justify-content:space-between;align-items:center}.book-card-actions{display:flex;gap:var(--spacing-sm)}.textarea{resize:vertical;min-height:80px}.upload-area{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:var(--spacing-sm);padding:var(--spacing-xl);border:2px dashed var(--border-color);border-radius:var(--radius-lg);color:var(--color-text-muted);cursor:pointer;transition:all var(--transition-base)}.upload-area:hover{border-color:var(--color-accent-primary);color:var(--color-accent-primary)}.assign-book-title{margin-bottom:var(--spacing-lg);padding-bottom:var(--spacing-lg);border-bottom:1px solid var(--border-color)}.assign-list{display:flex;flex-direction:column;gap:var(--spacing-sm);max-height:400px;overflow-y:auto}.assign-item{display:flex;align-items:center;gap:var(--spacing-md);padding:var(--spacing-md);background:var(--color-bg-tertiary);border:2px solid transparent;border-radius:var(--radius-lg);cursor:pointer;transition:all var(--transition-base)}.assign-item:hover{background:var(--color-bg-hover)}.assign-item.assigned{border-color:var(--color-success);background:#22c55e1a}.assign-avatar{width:40px;height:40px;border-radius:var(--radius-full)}.assign-info{flex:1;display:flex;flex-direction:column;gap:var(--spacing-xs)}.assign-name{font-weight:500;font-size:var(--font-size-sm)}.assign-check{width:24px;height:24px;border:2px solid var(--border-color);border-radius:var(--radius-full);display:flex;align-items:center;justify-content:center;font-size:12px;color:var(--color-success);transition:all var(--transition-base)}.assign-item.assigned .assign-check{background:var(--color-success);border-color:var(--color-success);color:#fff}.badge-student{background:#22c55e26;color:var(--color-success);padding:var(--spacing-xs) var(--spacing-sm);border-radius:var(--radius-full);font-size:var(--font-size-xs);font-weight:500}.badge-professor{background:#8b5cf626;color:#8b5cf6;padding:var(--spacing-xs) var(--spacing-sm);border-radius:var(--radius-full);font-size:var(--font-size-xs);font-weight:500}.class-tags{display:flex;flex-wrap:wrap;gap:var(--spacing-xs)}.class-tag{background:#c9a22726;color:var(--color-accent-tertiary);padding:2px var(--spacing-sm);border-radius:var(--radius-sm);font-size:var(--font-size-xs);font-weight:500}.class-tag-more{background:var(--color-bg-tertiary);color:var(--color-text-muted);padding:2px var(--spacing-sm);border-radius:var(--radius-sm);font-size:var(--font-size-xs)}.book-author{font-size:var(--font-size-xs);color:var(--color-text-muted)}.modal-lg{max-width:700px}.form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:var(--spacing-md)}@media (max-width: 600px){.form-grid{grid-template-columns:1fr}}.class-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(100px,1fr));gap:var(--spacing-sm)}.class-checkbox{display:flex;align-items:center;gap:var(--spacing-sm);padding:var(--spacing-sm) var(--spacing-md);background:var(--color-bg-tertiary);border:2px solid transparent;border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-base);font-size:var(--font-size-sm)}.class-checkbox:hover{border-color:var(--color-accent-primary)}.class-checkbox.checked{border-color:var(--color-accent-tertiary);background:#c9a2271a}.class-checkbox input{display:none}.class-checkbox span{white-space:nowrap}.pdf-upload-container{display:flex;flex-direction:column;gap:var(--spacing-sm)}.pdf-selected{display:flex;align-items:center;gap:var(--spacing-md);padding:var(--spacing-md);background:#0020600d;border:2px solid var(--color-accent-primary);border-radius:var(--radius-lg)}.pdf-selected svg{color:var(--color-accent-primary);flex-shrink:0}.pdf-filename{flex:1;font-size:var(--font-size-sm);font-weight:500;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.pdf-size{font-size:var(--font-size-xs);color:var(--color-text-muted)}.pdf-uploaded{display:flex;align-items:center;gap:var(--spacing-md);padding:var(--spacing-md);background:#22c55e14;border:2px solid var(--color-success);border-radius:var(--radius-lg)}.pdf-uploaded .text-success{color:var(--color-success)}.pdf-uploaded span{flex:1;font-size:var(--font-size-sm);font-weight:500;color:var(--color-success)}.upload-hint{font-size:var(--font-size-xs);color:var(--color-text-muted)}.upload-error{color:var(--color-error);font-size:var(--font-size-sm);margin-top:var(--spacing-xs)}.upload-success{color:var(--color-success);font-size:var(--font-size-sm);margin-top:var(--spacing-xs)}.btn-sm{padding:var(--spacing-xs) var(--spacing-md);font-size:var(--font-size-sm)}.manage-users{max-width:1400px;margin:0 auto}.filter-tabs{display:flex;gap:var(--spacing-sm);margin-bottom:var(--spacing-xl)}.filter-tab{padding:var(--spacing-sm) var(--spacing-lg);background:transparent;border:1px solid var(--border-color);border-radius:var(--radius-full);color:var(--color-text-secondary);font-size:var(--font-size-sm);font-weight:500;cursor:pointer;transition:all var(--transition-base)}.filter-tab:hover{background:var(--color-bg-hover);border-color:var(--border-color-hover)}.filter-tab.active{background:var(--color-accent-gradient);border-color:transparent;color:#fff}.users-table-container{background:var(--color-bg-card);border:1px solid var(--border-color);border-radius:var(--radius-xl);overflow:hidden}.user-cell{display:flex;align-items:center;gap:var(--spacing-md)}.user-avatar{width:40px;height:40px;border-radius:var(--radius-full);object-fit:cover}.user-name{font-weight:500}.books-count{display:inline-flex;align-items:center;gap:var(--spacing-xs);padding:var(--spacing-xs) var(--spacing-sm);background:var(--color-bg-tertiary);border-radius:var(--radius-full);font-size:var(--font-size-sm);color:var(--color-text-secondary)}.actions{display:flex;gap:var(--spacing-xs)}.actions .btn-icon.danger:hover{background:#ef444426;color:var(--color-error)}.manage-curriculum{max-width:1200px;margin:0 auto}.loading-container{display:flex;flex-direction:column;align-items:center;justify-content:center;height:300px;gap:var(--spacing-md);color:var(--color-text-muted)}.curriculum-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:var(--spacing-lg)}.curriculum-card{display:flex;align-items:center;gap:var(--spacing-md);padding:var(--spacing-lg);background:var(--color-bg-card);border:1px solid var(--border-color);border-radius:var(--radius-xl);transition:all var(--transition-base)}.curriculum-card:hover{border-color:var(--color-accent-primary);box-shadow:0 4px 12px #0020601a}.curriculum-icon{width:48px;height:48px;background:linear-gradient(135deg,var(--color-accent-primary),var(--color-accent-secondary));border-radius:var(--radius-lg);display:flex;align-items:center;justify-content:center;color:#fff;flex-shrink:0}.curriculum-info{flex:1;min-width:0}.curriculum-info h3{font-size:var(--font-size-md);font-weight:600;margin:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.curriculum-actions{display:flex;gap:var(--spacing-xs)}.curriculum-actions .btn-icon.danger:hover{background:#ef444426;color:var(--color-error)}.empty-state{grid-column:1 / -1;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:var(--spacing-3xl);color:var(--color-text-muted);gap:var(--spacing-md)}.empty-state svg{opacity:.5}.form-error{color:var(--color-error);font-size:var(--font-size-sm);margin-top:var(--spacing-sm)}.spin{animation:spin 1s linear infinite}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.book-card{display:flex;flex-direction:column;background:var(--color-bg-card);border:1px solid var(--border-color);border-radius:var(--radius-xl);cursor:pointer;transition:all var(--transition-base);animation:fadeIn var(--transition-slow) ease forwards;overflow:hidden;height:100%}.book-card:hover{border-color:var(--border-color-hover);transform:translateY(-8px) scale(1.02);box-shadow:var(--shadow-lg),0 20px 40px #00206026}.book-cover{position:relative;width:100%;height:140px;flex-shrink:0;overflow:hidden;border-bottom:1px solid var(--border-color-subtle)}.book-cover img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}.book-card:hover .book-cover img{transform:scale(1.05)}.book-overlay{position:absolute;top:0;right:0;bottom:0;left:0;background:#0006;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity var(--transition-base)}.read-btn{display:flex;align-items:center;gap:var(--spacing-xs);padding:var(--spacing-sm) var(--spacing-lg);background:#fff;border:none;border-radius:var(--radius-full);color:var(--color-text-primary);font-size:var(--font-size-sm);font-weight:600;cursor:pointer;transition:transform var(--transition-fast);box-shadow:var(--shadow-sm)}.book-info{flex:1;display:flex;flex-direction:column;padding:var(--spacing-md);gap:var(--spacing-xs)}.book-title{font-size:var(--font-size-lg);font-weight:700;color:var(--color-text-primary);line-height:1.3;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.book-author{font-size:var(--font-size-xs);color:var(--color-text-secondary);display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden}.book-meta{margin-top:auto;padding-top:var(--spacing-sm);display:flex;flex-wrap:wrap;gap:var(--spacing-xs);font-size:11px;color:var(--color-text-muted)}.book-component{display:inline-block;padding:2px 6px;background:var(--color-bg-tertiary);border-radius:4px;font-weight:500}.book-arrow{display:none}.book-card:hover{border-color:var(--border-color-hover);transform:translate(4px);box-shadow:var(--shadow-md)}.book-cover{position:relative;width:80px;height:110px;flex-shrink:0;border-radius:var(--radius-md);overflow:hidden}.book-cover img{width:100%;height:100%;object-fit:cover}.book-overlay{position:absolute;top:0;right:0;bottom:0;left:0;background:#000000b3;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity var(--transition-base)}.book-card:hover .book-overlay{opacity:1}.read-btn{display:flex;align-items:center;gap:var(--spacing-xs);padding:var(--spacing-xs) var(--spacing-sm);background:var(--color-accent-gradient);border:none;border-radius:var(--radius-md);color:#fff;font-size:var(--font-size-xs);font-weight:500;cursor:pointer;transition:transform var(--transition-fast)}.read-btn:hover{transform:scale(1.05)}.book-info{flex:1;min-width:0}.book-title{font-size:var(--font-size-base);font-weight:600;margin-bottom:var(--spacing-xs);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.book-author{font-size:var(--font-size-sm);color:var(--color-text-secondary);margin-bottom:var(--spacing-sm)}.book-progress{display:flex;flex-direction:column;gap:var(--spacing-xs)}.progress-bar{height:6px;background:var(--color-bg-tertiary);border-radius:var(--radius-full);overflow:hidden}.progress-fill{height:100%;background:var(--color-accent-gradient);border-radius:var(--radius-full);transition:width var(--transition-slow)}.progress-text{font-size:var(--font-size-xs);color:var(--color-text-muted)}.book-meta{display:flex;align-items:center;gap:var(--spacing-xs);font-size:var(--font-size-xs);color:var(--color-text-muted)}.book-arrow{color:var(--color-text-muted);transition:all var(--transition-base)}.book-card:hover .book-arrow{color:var(--color-accent-primary);transform:translate(4px)}.book-card-grid{flex-direction:column;padding:0;overflow:hidden}.book-card-grid .book-cover{width:100%;height:200px;border-radius:0}.book-card-grid .book-info{padding:var(--spacing-lg)}.book-card-grid .book-arrow{display:none}.my-books{max-width:1200px;margin:0 auto}.books-section{margin-bottom:var(--spacing-2xl)}.books-section h2{font-size:var(--font-size-xl);margin-bottom:var(--spacing-lg);padding-bottom:var(--spacing-md);border-bottom:1px solid var(--border-color)}.books-list{display:flex;flex-direction:column;gap:var(--spacing-md)}.student-books-group{background:var(--color-bg-card);border:1px solid var(--border-color);border-radius:var(--radius-xl);padding:var(--spacing-lg);margin-bottom:var(--spacing-lg)}.student-header{display:flex;align-items:center;gap:var(--spacing-md);margin-bottom:var(--spacing-lg);padding-bottom:var(--spacing-md);border-bottom:1px solid var(--border-color)}.student-avatar{width:48px;height:48px;border-radius:var(--radius-full);object-fit:cover}.student-info{display:flex;flex-direction:column}.student-name{font-weight:600;font-size:var(--font-size-base)}.student-count{font-size:var(--font-size-sm);color:var(--color-text-muted)}.empty-message{color:var(--color-text-muted);font-style:italic;padding:var(--spacing-lg);text-align:center}.students-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:var(--spacing-lg)}.student-card{background:var(--color-bg-card);border:1px solid var(--border-color);border-radius:var(--radius-xl);padding:var(--spacing-xl);transition:all var(--transition-base)}.student-card:hover{border-color:var(--border-color-hover);transform:translateY(-2px);box-shadow:var(--shadow-md)}.student-card .student-header{border-bottom:none;margin-bottom:var(--spacing-lg);padding-bottom:0}.student-card .student-avatar{width:56px;height:56px}.student-email{font-size:var(--font-size-xs);color:var(--color-text-muted)}.student-stats{display:flex;gap:var(--spacing-xl);margin-bottom:var(--spacing-md)}.student-stat{display:flex;flex-direction:column;align-items:center}.student-stat .stat-value{font-size:var(--font-size-xl);font-weight:700;color:var(--color-text-primary)}.student-stat .stat-label{font-size:var(--font-size-xs);color:var(--color-text-muted)}.student-card .progress-bar{height:8px;background:var(--color-bg-tertiary);border-radius:var(--radius-full);overflow:hidden}.student-card .progress-fill{height:100%;background:var(--color-accent-gradient);border-radius:var(--radius-full);transition:width var(--transition-slow)}.my-library{max-width:1400px;margin:0 auto}.library-search{display:flex;align-items:center;gap:var(--spacing-md);margin-bottom:var(--spacing-xl);padding:var(--spacing-md) var(--spacing-lg);background:var(--color-bg-card);border:1px solid var(--border-color);border-radius:var(--radius-xl);color:var(--color-text-muted)}.library-search .input{flex:1;border:none;background:transparent}.library-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:var(--spacing-lg);padding:var(--spacing-md) 0}.book-card{background:var(--color-bg-card);border:1px solid var(--border-color);border-radius:var(--radius-lg);overflow:hidden;transition:all .4s cubic-bezier(.175,.885,.32,1.275);display:flex;flex-direction:column;position:relative;transform-style:preserve-3d;perspective:1000px}.book-card:before{content:"";position:absolute;left:0;top:10%;bottom:10%;width:4px;background:linear-gradient(to right,rgba(0,0,0,.15),transparent);z-index:10;border-radius:2px 0 0 2px}.book-card:hover{transform:translateY(-12px) rotateX(5deg) scale(1.02);box-shadow:var(--shadow-lg),0 25px 50px #00206033,0 0 0 1px var(--color-accent-primary);border-color:var(--color-accent-primary)}.book-card-cover-container{position:relative;width:100%;aspect-ratio:3/4;overflow:hidden;background:var(--color-bg-secondary)}.book-card-cover{width:100%;height:100%;object-fit:cover;transition:transform var(--transition-base);object-position:center top}.book-card-cover-blur{position:absolute;top:0;left:0;width:100%;height:100%;background-size:cover;background-position:center;filter:blur(20px);opacity:.5;z-index:0}.book-cover-placeholder{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:var(--spacing-sm);width:100%;height:100%;background:linear-gradient(135deg,var(--color-bg-secondary) 0%,var(--color-bg-tertiary) 100%);color:var(--color-text-muted);position:relative;z-index:1}.book-cover-placeholder svg{opacity:.4}.book-cover-placeholder span{font-size:var(--font-size-sm);font-weight:500;opacity:.6}.book-card:hover .book-card-cover{transform:scale(1.05)}.book-card-content{padding:var(--spacing-md);flex:1;display:flex;flex-direction:column;gap:var(--spacing-sm)}.book-card-badges{display:flex;flex-wrap:wrap;gap:var(--spacing-xs);margin-bottom:var(--spacing-xs)}.badge-component{background:#0020601f;color:var(--color-accent-primary);padding:var(--spacing-xs) var(--spacing-sm);border-radius:var(--radius-full);font-size:var(--font-size-xs);font-weight:500}.book-name{font-weight:600;font-size:var(--font-size-md);color:var(--color-text-primary);line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.book-author{font-size:var(--font-size-sm);color:var(--color-text-muted)}.book-card-footer{margin-top:auto;padding-top:var(--spacing-md);border-top:1px solid var(--border-color);display:flex;justify-content:center;align-items:center}.btn-read{display:flex;align-items:center;gap:var(--spacing-sm);padding:var(--spacing-sm) var(--spacing-xl);background:var(--color-accent-gradient);border:none;border-radius:var(--radius-full);color:#fff;font-size:var(--font-size-sm);font-weight:600;cursor:pointer;transition:all var(--transition-base);width:100%;justify-content:center}.btn-read:hover:not(:disabled){transform:scale(1.02);box-shadow:0 4px 12px #0020604d}.btn-read:disabled{background:var(--color-bg-tertiary);color:var(--color-text-muted);cursor:not-allowed}.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:var(--spacing-2xl);text-align:center;color:var(--color-text-muted);background:var(--color-bg-card);border:1px dashed var(--border-color);border-radius:var(--radius-xl);margin-top:var(--spacing-xl)}.empty-state h3{margin-top:var(--spacing-lg);margin-bottom:var(--spacing-sm);color:var(--color-text-secondary)}.empty-state p{max-width:400px}@media (max-width: 768px){.library-grid{grid-template-columns:repeat(auto-fill,minmax(240px,1fr))}}