:root{--primary-color: #2575fc;--secondary-color: #1e40af;--accent-color: #ffd700;--background-color: #f4f7f6;--text-color: #000000;--white: #ffffff;--glass-bg: rgba(255, 255, 255, .1);--glass-border: rgba(255, 255, 255, .2);--border-adaptive: rgba(0, 0, 0, .2);--shadow-sm: 0 4px 6px rgba(0, 0, 0, .1);--shadow-md: 0 8px 15px rgba(0, 0, 0, .1);--shadow-lg: 0 12px 24px rgba(0, 0, 0, .15);--navbar-bg: linear-gradient(90deg, #4b6cb7, #182848);--card-bg: #ffffff;--input-bg: rgba(255, 255, 255, .1);--input-text: #333;--font-family: "Nunito", sans-serif;--dashboard-wrapper-bg: linear-gradient(180deg, rgba(255, 255, 255, .5), rgba(248, 250, 252, .56));--dashboard-wrapper-border: rgba(255, 255, 255, .24);--dashboard-eyebrow-color: #28437b;--dashboard-title-color: #1a2745;--dashboard-subtitle-color: #5b6474;--stats-card-bg: rgba(255, 255, 255, .72);--stats-card-border: rgba(255, 255, 255, .34);--stats-card-shadow: 0 18px 30px rgba(15, 23, 42, .08);--stats-card-hover-shadow: 0 24px 40px rgba(15, 23, 42, .12);--stats-label-color: #728098;--stats-value-color: #17243f;--chart-grid-color: #dbe4f0;--chart-tick-color: #75839a;--tooltip-bg: #ffffff;--tooltip-border: rgba(148, 163, 184, .18);--tooltip-shadow: 0 12px 30px rgba(15, 23, 42, .12);--tooltip-text: #333;--icon-blue-bg: #e5efff;--icon-blue-color: #3159b8;--icon-green-bg: #e4f8f0;--icon-green-color: #1fa97a;--icon-orange-bg: #fff3e4;--icon-orange-color: #ee7c4f;--icon-purple-bg: #f1ebff;--icon-purple-color: #7a5af8}[data-theme=dark]{--primary-color: #4b6cb7;--secondary-color: #182848;--accent-color: #ffd700;--background-color: #121212;--text-color: #e0e0e0;--white: #1e1e1e;--glass-bg: rgba(0, 0, 0, .3);--glass-border: rgba(255, 255, 255, .1);--border-adaptive: rgba(255, 255, 255, .2);--shadow-sm: 0 4px 6px rgba(0, 0, 0, .3);--shadow-md: 0 8px 15px rgba(0, 0, 0, .3);--shadow-lg: 0 12px 24px rgba(0, 0, 0, .4);--navbar-bg: linear-gradient(90deg, #1f2937, #111827);--card-bg: #1e1e1e;--input-bg: rgba(255, 255, 255, .05);--input-text: #e0e0e0;--font-family: "Nunito", sans-serif;--dashboard-wrapper-bg: linear-gradient(180deg, rgba(14, 18, 28, .54), rgba(16, 20, 30, .66));--dashboard-wrapper-border: rgba(255, 255, 255, .08);--dashboard-eyebrow-color: #8fb0ff;--dashboard-title-color: #f8fafc;--dashboard-subtitle-color: #9aa7bc;--stats-card-bg: rgba(20, 26, 39, .8);--stats-card-border: rgba(255, 255, 255, .08);--stats-card-shadow: 0 18px 30px rgba(0, 0, 0, .34);--stats-card-hover-shadow: 0 24px 40px rgba(0, 0, 0, .42);--stats-label-color: #9aa7bc;--stats-value-color: #ffffff;--chart-grid-color: rgba(255, 255, 255, .08);--chart-tick-color: #9aa7bc;--tooltip-bg: #1e2533;--tooltip-border: rgba(255, 255, 255, .1);--tooltip-shadow: 0 12px 30px rgba(0, 0, 0, .4);--tooltip-text: #e0e0e0;--icon-blue-bg: rgba(49, 89, 184, .22);--icon-blue-color: #8fb0ff;--icon-green-bg: rgba(31, 169, 122, .2);--icon-green-color: #8ce6bf;--icon-orange-bg: rgba(238, 124, 79, .18);--icon-orange-color: #ffc09b;--icon-purple-bg: rgba(122, 90, 248, .2);--icon-purple-color: #c9b9ff}[data-theme=vintage]{--primary-color: #795548;--secondary-color: #3e2723;--accent-color: #e65100;--background-color: #f4ebd8;--text-color: #4e342e;--white: #e8dcc8;--glass-bg: rgba(141, 110, 99, .1);--glass-border: rgba(141, 110, 99, .2);--border-adaptive: rgba(78, 52, 46, .2);--shadow-sm: 0 4px 6px rgba(78, 52, 46, .1);--shadow-md: 0 8px 15px rgba(78, 52, 46, .1);--shadow-lg: 0 12px 24px rgba(78, 52, 46, .15);--navbar-bg: linear-gradient(90deg, #5d4037, #3e2723);--card-bg: #e8dcc8;--input-bg: rgba(141, 110, 99, .1);--input-text: #4e342e;--font-family: "Georgia", "Times New Roman", serif}[data-theme=ocean]{--primary-color: #0891b2;--secondary-color: #164e63;--accent-color: #ebd576;--background-color: #e7f5ff;--text-color: #134e4a;--white: #f0fdfa;--glass-bg: rgba(8, 145, 178, .08);--glass-border: rgba(8, 145, 178, .15);--border-adaptive: rgba(20, 78, 74, .2);--shadow-sm: 0 4px 6px rgba(22, 78, 99, .1);--shadow-md: 0 8px 15px rgba(22, 78, 99, .1);--shadow-lg: 0 12px 24px rgba(22, 78, 99, .15);--navbar-bg: linear-gradient(90deg, #0e7490, #164e63);--card-bg: #f0fdfa;--input-bg: rgba(8, 145, 178, .08);--input-text: #134e4a;--font-family: "Nunito", sans-serif}[data-theme=forest]{--primary-color: #e6ccb2;--secondary-color: #059669;--accent-color: #ddb892;--background-color: #e8f5e9;--text-color: #2e1d16;--white: #f7f3e8;--glass-bg: rgba(230, 204, 178, .08);--glass-border: rgba(230, 204, 178, .15);--border-adaptive: rgba(5, 150, 105, .2);--shadow-sm: 0 4px 6px rgba(5, 150, 105, .1);--shadow-md: 0 8px 15px rgba(5, 150, 105, .1);--shadow-lg: 0 12px 24px rgba(5, 150, 105, .15);--navbar-bg: linear-gradient(90deg, #047857, #064e3b);--card-bg: #f3eadd;--input-bg: rgba(5, 150, 105, .06);--input-text: #2e1d16;--font-family: "Nunito", sans-serif}[data-theme=midnight]{--primary-color: #818cf8;--secondary-color: #0f0f1a;--accent-color: #22d3ee;--background-color: #000000;--text-color: #e2e8f0;--white: #0a0a14;--glass-bg: rgba(129, 140, 248, .06);--glass-border: rgba(129, 140, 248, .12);--border-adaptive: rgba(226, 232, 240, .15);--shadow-sm: 0 4px 6px rgba(0, 0, 0, .5);--shadow-md: 0 8px 15px rgba(0, 0, 0, .5);--shadow-lg: 0 12px 24px rgba(0, 0, 0, .6);--navbar-bg: linear-gradient(90deg, #1e1b4b, #0f0f1a);--card-bg: #0a0a14;--input-bg: rgba(129, 140, 248, .06);--input-text: #e2e8f0;--font-family: "Nunito", sans-serif}[data-theme=nord]{--primary-color: #5e81ac;--secondary-color: #2e3440;--accent-color: #88c0d0;--background-color: #eceff4;--text-color: #2e3440;--white: #e5e9f0;--glass-bg: rgba(94, 129, 172, .08);--glass-border: rgba(94, 129, 172, .15);--border-adaptive: rgba(46, 52, 64, .2);--shadow-sm: 0 4px 6px rgba(46, 52, 64, .1);--shadow-md: 0 8px 15px rgba(46, 52, 64, .1);--shadow-lg: 0 12px 24px rgba(46, 52, 64, .15);--navbar-bg: linear-gradient(90deg, #4c566a, #2e3440);--card-bg: #e5e9f0;--input-bg: rgba(94, 129, 172, .08);--input-text: #2e3440;--font-family: "Nunito", sans-serif}[data-theme=dark] .questions-btn,[data-theme=dark] .syllabus-btn{background:linear-gradient(135deg,#4b6cb7,#3b5998);color:#fff;box-shadow:0 8px 18px #4b6cb740}[data-theme=dark] .questions-btn:hover,[data-theme=dark] .syllabus-btn:hover{background:linear-gradient(135deg,#5a7dc8,#4b6cb7);color:#fff}[data-theme=vintage] .questions-btn,[data-theme=vintage] .syllabus-btn{background:linear-gradient(135deg,#a1887f,#795548);color:#fff;box-shadow:0 8px 18px #79554833}[data-theme=vintage] .questions-btn:hover,[data-theme=vintage] .syllabus-btn:hover{background:linear-gradient(135deg,#bcaaa4,#8d6e63);color:#fff}[data-theme=ocean] .questions-btn,[data-theme=ocean] .syllabus-btn{background:linear-gradient(135deg,#0891b2,#0e7490);color:#fff;box-shadow:0 8px 18px #0891b233}[data-theme=ocean] .questions-btn:hover,[data-theme=ocean] .syllabus-btn:hover{background:linear-gradient(135deg,#06b6d4,#0891b2);color:#fff}[data-theme=ocean] .edit-btn{background:linear-gradient(135deg,#ebd576,#d9be5b);color:#134e4a}[data-theme=ocean] .book-code-btn{color:#0891b2}[data-theme=ocean] .book-code-btn:hover{background:#0891b2;color:#fff}[data-theme=forest] .questions-btn,[data-theme=forest] .syllabus-btn{background:linear-gradient(135deg,#e6ccb2,#ddb892);color:#059669;box-shadow:0 8px 18px #e6ccb233}[data-theme=forest] .questions-btn:hover,[data-theme=forest] .syllabus-btn:hover{background:linear-gradient(135deg,#f0d6bc,#e6ccb2);color:#059669}[data-theme=forest] .edit-btn{background:linear-gradient(135deg,#f97316,#ea580c);color:#fff}[data-theme=forest] .book-code-btn{color:#e6ccb2}[data-theme=forest] .book-code-btn:hover{background:#e6ccb2;color:#059669}[data-theme=midnight] .book-card{background:#0a0a14;border:1px solid rgba(129,140,248,.15);filter:drop-shadow(0 10px 20px rgba(0,0,0,.6));color:#e2e8f0}[data-theme=midnight] .book-card:hover{filter:drop-shadow(0 16px 28px rgba(0,0,0,.8));border-color:#818cf866}[data-theme=midnight] .book-card:after{background:linear-gradient(105deg,transparent 20%,rgba(129,140,248,.06) 45%,rgba(129,140,248,.12) 50%,rgba(129,140,248,.06) 55%,transparent 80%)}[data-theme=midnight] .book-card-title{color:#e2e8f0}[data-theme=midnight] .questions-btn,[data-theme=midnight] .syllabus-btn{background:linear-gradient(135deg,#818cf8,#6366f1);color:#fff;box-shadow:0 8px 18px #818cf833}[data-theme=midnight] .questions-btn:hover,[data-theme=midnight] .syllabus-btn:hover{background:linear-gradient(135deg,#a5b4fc,#818cf8);color:#fff}[data-theme=midnight] .edit-btn{background:linear-gradient(135deg,#22d3ee,#06b6d4);color:#0a0a14;text-shadow:none}[data-theme=midnight] .remove-btn{background:linear-gradient(135deg,#f87171,#ef4444);color:#fff}[data-theme=midnight] .admin-actions-row{background-color:#0a0a14;border-top-color:#818cf81f}[data-theme=midnight] .book-code-btn{background:#0a0a14e0;border-color:#818cf833;color:#818cf8}[data-theme=midnight] .book-code-btn:hover{background:#818cf8;color:#fff}[data-theme=midnight] .book-category-badge{color:#a5b4fc}[data-theme=nord] .questions-btn,[data-theme=nord] .syllabus-btn{background:linear-gradient(135deg,#5e81ac,#4c566a);color:#fff;box-shadow:0 8px 18px #5e81ac33}[data-theme=nord] .questions-btn:hover,[data-theme=nord] .syllabus-btn:hover{background:linear-gradient(135deg,#81a1c1,#5e81ac);color:#fff}[data-theme=nord] .edit-btn{background:linear-gradient(135deg,#88c0d0,#5e81ac);color:#2e3440;text-shadow:none}[data-theme=nord] .book-code-btn{color:#5e81ac}[data-theme=nord] .book-code-btn:hover{background:#5e81ac;color:#eceff4}[data-theme=dark] .admin-actions-row{background-color:#252525;border-top-color:#333}[data-theme=vintage] .admin-actions-row{background-color:#8d6e6314;border-top-color:#79554826}[data-theme=dark] .book-category-badge{background:color-mix(in srgb,var(--primary-color) 18%,transparent);color:#93b5ff}[data-theme=vintage] .book-category-badge{background:color-mix(in srgb,var(--primary-color) 14%,transparent);color:#795548}@font-face{font-family:Henny Penny;font-style:normal;font-weight:400;font-display:swap;src:url(/fonts/HennyPenny-Regular.ttf) format("truetype")}body{margin:0;font-family:var(--font-family);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background-color:var(--background-color);color:var(--text-color);font-weight:400}*{box-sizing:border-box}code{font-family:source-code-pro,Menlo,Monaco,Consolas,Courier New,monospace}.brand-name{font-family:Henny Penny,cursive!important;color:var(--accent-color)!important;font-size:2rem;display:inline-block}.navbar{position:fixed;top:0;left:0;right:0;width:100%;z-index:1000;background:var(--navbar-bg);border-bottom:1px solid var(--glass-border);padding:.25rem 0;transition:all .3s ease;box-shadow:var(--shadow-sm)}.theme-toggle{background:transparent;border:none;color:#fff;cursor:pointer;padding:.5rem;border-radius:50%;display:flex;align-items:center;justify-content:center;transition:background-color .3s ease,color .3s ease;margin-left:0}.theme-toggle:hover{background-color:#ffffff1a;color:var(--accent-color)}.navbar-container{width:100%;margin:0;padding:0 1.25rem;display:flex;align-items:center;justify-content:space-between;gap:1.25rem}.logo-link{text-decoration:none;display:flex;align-items:center;margin-right:1.25rem}.navbar .brand-name{font-family:Henny Penny,cursive!important;font-size:2.2rem;color:var(--accent-color)!important;background:none;-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:initial;letter-spacing:.0625rem;text-decoration:none;font-weight:400!important;transition:transform .3s ease;text-shadow:2px 2px 4px rgba(0,0,0,.3);position:relative;top:.125rem}.logo-link:hover .brand-name{transform:scale(1.05)}.search-container{display:flex;align-items:center;background:#ffffff1a;border-radius:3.125rem;padding:.3125rem .3125rem .3125rem 1.25rem;box-shadow:inset 0 2px 4px #0000001a;border:1px solid rgba(255,255,255,.2);width:18.75rem;transition:all .3s ease}.search-container:focus-within{background:#fff3;border-color:var(--accent-color);box-shadow:0 0 10px color-mix(in srgb,var(--accent-color) 30%,transparent)}.search-input{border:none;outline:none;width:100%;font-size:.95rem;color:#fff;background:transparent}.search-input::placeholder{color:#ffffffb3}.search-btn{background-color:var(--accent-color);color:var(--secondary-color);border:none;width:3.4375rem;height:2.25rem;border-radius:1.25rem;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:transform .2s ease,box-shadow .2s ease}.search-btn:hover{transform:scale(1.1);box-shadow:0 0 10px color-mix(in srgb,var(--accent-color) 50%,transparent);background-color:color-mix(in srgb,var(--accent-color) 80%,white)}.navbar-actions{display:flex;align-items:center;gap:.9375rem;margin-left:auto}.auth-btn,.auth-btn-link{background-color:var(--accent-color);color:var(--secondary-color);padding:.5rem 1.25rem;border-radius:1.25rem;text-decoration:none;font-weight:700;font-size:.95rem;border:none;cursor:pointer;transition:transform .2s ease,box-shadow .2s ease;display:inline-block}.auth-btn:hover,.auth-btn-link:hover{transform:scale(1.05);background-color:color-mix(in srgb,var(--accent-color) 80%,white);box-shadow:0 0 10px color-mix(in srgb,var(--accent-color) 40%,transparent)}.account-avatar-btn,.mobile-account-btn{width:2.75rem;height:2.75rem;border-radius:50%;border:2px solid rgba(255,255,255,.65);background-color:var(--accent-color);color:var(--secondary-color);display:inline-flex;align-items:center;justify-content:center;padding:0;cursor:pointer;box-shadow:0 4px 12px #0000002e;transition:transform .2s ease,box-shadow .2s ease,background-color .2s ease}.account-avatar-btn:hover,.mobile-account-btn:hover{transform:scale(1.06);background-color:color-mix(in srgb,var(--accent-color) 80%,white);box-shadow:0 0 10px color-mix(in srgb,var(--accent-color) 45%,transparent)}.account-avatar-letter{font-family:Henny Penny,cursive;font-size:1.35rem;line-height:1;font-weight:700;position:relative;top:.0625rem}.desktop-auth{display:block;position:relative}.account-dropdown{position:absolute;top:calc(100% + .75rem);right:0;width:min(17.5rem,calc(100vw - 2rem));background:var(--card-bg);color:var(--text-color);border:1px solid var(--glass-border);border-radius:.5rem;box-shadow:0 14px 32px #00000038;padding:1rem;z-index:1003;animation:accountMenuIn .18s ease}.account-dropdown:before{content:"";position:absolute;top:-.45rem;right:1rem;width:.875rem;height:.875rem;background:var(--card-bg);border-left:1px solid var(--glass-border);border-top:1px solid var(--glass-border);transform:rotate(45deg)}.account-dropdown-header{display:flex;flex-direction:column;align-items:center;gap:.625rem;padding-bottom:.875rem;border-bottom:1px solid var(--glass-border);margin-bottom:.625rem}.account-dropdown-avatar{width:3.75rem;height:3.75rem;border-radius:50%;background:var(--accent-color);color:var(--secondary-color);border:2px solid color-mix(in srgb,var(--secondary-color) 16%,transparent);display:inline-flex;align-items:center;justify-content:center}.account-dropdown-avatar .account-avatar-letter{font-size:1.75rem}.account-dropdown-label{width:100%;margin:0;color:var(--text-color);font-size:.95rem;font-weight:700;line-height:1.25;text-align:center;overflow-wrap:anywhere}.account-dropdown-item,.account-dropdown-logout{width:100%;border:none;border-radius:.5rem;cursor:pointer;display:block;font-family:inherit;font-size:.98rem;font-weight:700;padding:.75rem .875rem;text-align:center;transition:transform .2s ease,box-shadow .2s ease,background-color .2s ease,color .2s ease}.account-dropdown-item{background:transparent;color:var(--text-color)}.account-dropdown-item.theme-option-card{position:relative;display:block;padding:0;width:100%;height:48px;border-radius:6px;overflow:hidden;border:2px solid transparent;margin-bottom:8px}.account-dropdown-item.theme-option-card:last-child{margin-bottom:0}.account-dropdown-item.theme-option-card.active,.account-dropdown-item.theme-option-card:hover{border-color:var(--primary-color);transform:scale(1.02);box-shadow:0 4px 12px #0000001a}.theme-card-colors{display:flex;width:100%;height:100%}.theme-card-colors>div{flex:1;height:100%}.theme-card-label{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);background-color:#fff;color:#1f2937;padding:4px 14px;border-radius:4px;font-size:.8rem;font-weight:800;box-shadow:0 2px 8px #00000040;letter-spacing:.02em;text-transform:uppercase}.account-dropdown-logout{background-color:var(--accent-color);color:var(--secondary-color);margin-top:.375rem}.account-dropdown-logout:hover{transform:scale(1.03);background-color:color-mix(in srgb,var(--accent-color) 80%,white);box-shadow:0 0 10px color-mix(in srgb,var(--accent-color) 40%,transparent)}@keyframes accountMenuIn{0%{opacity:0;transform:translateY(-.25rem)}to{opacity:1;transform:translateY(0)}}[data-theme=dark] .account-dropdown-item:hover{background:#ffffff14;color:var(--accent-color)}.mobile-only-auth,.mobile-only-logout,.mobile-account-actions{display:none}.nav-menu{display:flex;align-items:center;list-style:none;gap:1.875rem;margin:0;padding:0}.nav-menu li a,.dropdown span{color:#fff;text-decoration:none;font-weight:600;font-size:1.05rem;transition:color .3s ease;cursor:pointer;position:relative}.nav-menu li a:after,.dropdown span:after{content:"";position:absolute;width:0;height:.125rem;bottom:-.25rem;left:50%;transform:translate(-50%);background-color:var(--accent-color);transition:width .3s ease}.nav-menu li a:hover:after,.dropdown span:hover:after{width:100%}.nav-menu li a:hover,.dropdown span:hover{color:var(--accent-color)}.dropdown{position:relative}.dropdown-menu{display:none;position:absolute;top:100%;left:50%;transform:translate(-50%);background:var(--card-bg);min-width:13.75rem;border-radius:.75rem;box-shadow:0 8px 20px #0003;padding:.625rem 0;z-index:100;animation:fadeIn .2s ease-in-out;margin-top:.9375rem;list-style:none}.dropdown-menu:before{content:"";position:absolute;top:-1.25rem;left:0;width:100%;height:1.25rem;background:transparent}.dropdown:hover .dropdown-menu{display:block}.dropdown-menu li{padding:0}.nav-menu .dropdown-menu li a{display:block;padding:.625rem 1.25rem;color:var(--text-color);font-size:.95rem;font-weight:600;transition:background .2s ease}.nav-menu .dropdown-menu li a:hover{background:color-mix(in srgb,var(--primary-color) 10%,transparent);color:var(--primary-color)}.dropdown-menu li a:after{display:none}[data-theme=dark] .dropdown-menu{background:#1e1e1e;border:1px solid rgba(255,255,255,.1)}[data-theme=dark] .nav-menu .dropdown-menu li a{color:#fff!important}[data-theme=dark] .nav-menu .dropdown-menu li a:hover{background:#ffffff1a;color:var(--accent-color)!important}@keyframes fadeIn{0%{opacity:0;margin-top:1.5625rem}to{opacity:1;margin-top:.9375rem}}.menu-icon{display:none;cursor:pointer;background:transparent;border:none;padding:.375rem;color:#fff;align-items:center;justify-content:center}@media screen and (max-width:86.25rem){.navbar-container{padding:0 1rem;gap:.875rem}.logo-link{margin-right:.5rem}.navbar .brand-name{font-size:1.9rem}.nav-menu{gap:1.375rem}.nav-menu li a,.dropdown span{font-size:.98rem}.search-container{width:13.75rem}.auth-btn,.auth-btn-link{padding:.5rem 1rem}}@media screen and (max-width:75rem){.navbar-container{padding:0 .9375rem;gap:.625rem}.navbar .brand-name{font-size:1.5rem}.navbar-actions{display:contents}.logo-link{order:2;margin-right:auto;margin-left:.625rem}.theme-dropdown-container{order:3}.theme-toggle{margin-left:0}.search-container{order:4;margin:0 0 0 .625rem;width:2.5rem;padding:.3125rem;justify-content:center;background:transparent;border:none;box-shadow:none;transition:all .3s ease}.search-container.active{position:absolute;left:5%;right:5%;width:90%;top:50%;transform:translateY(-50%);background-color:var(--card-bg);border:1px solid rgba(0,0,0,.1);border-radius:1.875rem;box-shadow:0 4px 15px #0003;justify-content:space-between;z-index:1002;padding:.3125rem .9375rem;height:3.125rem;margin:0}.search-container.active .search-input{display:block;width:100%;margin-right:.625rem;color:#333;font-size:1rem}.search-container.active .search-input::placeholder{color:#888}.search-container.active 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