:root{--primary:#071A3D;--deep:#020B24;--gold:#F5B800;--gold-dark:#C88A00;--bg:#F7F8FA;--line:#DDE2EA;--muted:#687386;--success:#16A34A;--error:#DC2626;--info:#2563EB;--warning:#D97706;--white:#FFFFFF;font-family:Inter,ui-sans-serif,system-ui,-apple-system,Segoe UI,sans-serif;color:#111827;background:var(--bg)}*{box-sizing:border-box}body{margin:0;min-width:320px;background:var(--bg)}a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}button{cursor:pointer}:focus-visible{outline:3px solid rgba(245,184,0,.6);outline-offset:2px}*{scrollbar-width:thin;scrollbar-color:var(--gold-dark) transparent}::-webkit-scrollbar{width:10px;height:10px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background-color:var(--gold-dark);border-radius:999px;border:2px solid 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form{display:grid;grid-gap:10px;gap:10px}.auth-card form .field{margin:0}.auth-card form .button{width:100%;gap:10px}.google-button{background:#fff;color:#1F2937;border:1px solid #c5cbd5!important;box-shadow:0 2px 8px rgba(2,11,36,.06)}.google-button:hover{background:#F7F8FA;border-color:#98A1AF!important}.google-mark{display:grid;place-items:center;width:22px;height:22px;border-radius:50%;color:#4285F4;font-size:1rem;font-weight:800;font-family:Arial,sans-serif}.field{display:grid;grid-gap:4px;gap:4px;margin:16px 0}.field.has-error input,.field.has-error select,.field.has-error textarea{border-color:var(--error)}.field-error{margin:0;color:var(--error);font-size:.82rem;line-height:1.35}label{font-weight:700;color:var(--primary)}input,select,textarea{width:100%;min-height:44px;border:1px solid var(--line);border-radius:8px;padding:10px 12px;background:#fff}textarea{min-height:110px;resize:vertical}.loading{color:var(--muted);padding:24px 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24px}.main{padding-top:24px}.auth-card{padding:18px;border-radius:12px}.auth-logo{width:min(100%,132px);margin-bottom:8px}.auth-card>.muted{font-size:.9rem}.auth-card>.muted+form{margin-top:12px}.auth-card form{gap:8px}}:root[data-theme=dark]{--bg:#0A1120;--line:#1C2942;--muted:#93A0B4;--white:#0F1A30}:root[data-theme=dark] body{background:var(--bg);color:#E7EBF3}:root[data-theme=dark] .popup-title,:root[data-theme=dark] .stat,:root[data-theme=dark] h1,:root[data-theme=dark] h2,:root[data-theme=dark] h3{color:#F2F5FA}:root[data-theme=dark] .card{background:var(--white)}:root[data-theme=dark] .button.outline{color:#E7EBF3}:root[data-theme=dark] .badge{background:#1C2942;color:#E7EBF3}:root[data-theme=dark] .notice{background:#2B2410}:root[data-theme=dark] .error{background:#3B1218}:root[data-theme=dark] .main input,:root[data-theme=dark] .main label,:root[data-theme=dark] .main select,:root[data-theme=dark] .main textarea{background:var(--white);color:#E7EBF3}.material-symbols-outlined{font-family:Material Symbols Outlined;font-weight:400;font-style:normal;line-height:1;letter-spacing:normal;text-transform:none;display:inline-block;white-space:nowrap;word-wrap:normal;direction:ltr;font-feature-settings:"liga";-webkit-font-smoothing:antialiased}.session-loading{min-height:100svh;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:20px;color:var(--muted);font-size:1.05rem}.session-loading-spinner{width:44px;height:44px;border-radius:50%;border:4px solid var(--white);border-top-color:var(--gold);animation:session-spin .8s linear infinite}@keyframes session-spin{to{transform:rotate(1turn)}}.google-button-container{width:100%;min-height:44px;display:flex;align-items:center}.google-button-container 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rgba(2,11,36,.18)}.popover-title{font-weight:700;text-transform:uppercase;letter-spacing:.04em}.popover-title,.theme-label{font-size:.8rem;color:var(--muted)}.theme-options{display:flex;gap:6px}.theme-option{flex:1 1;min-height:36px;padding:6px;display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--line);border-radius:8px;background:#fff;color:var(--primary)}.theme-option svg{width:18px;height:18px;fill:currentColor}.theme-option.selected{background:var(--primary);border-color:var(--primary);color:#fff}.popover-logout{margin-top:4px;min-height:40px;border:0;border-radius:8px;background:#FEE2E2;color:var(--error);font-weight:700}.confirm-backdrop{position:fixed;inset:0;z-index:1000;display:grid;place-items:center;padding:24px;background:rgba(2,11,36,.6)}.confirm-dialog{width:min(100%,400px);padding:24px;background:#fff;border-radius:12px;text-align:center}.confirm-dialog h2{margin:0 0 8px}.confirm-dialog p{margin:0 0 20px;color:var(--muted)}.confirm-actions{display:flex;justify-content:flex-end;gap:10px}:root[data-theme=dark] .header-popover{background:var(--white);color:#E7EBF3;border:1px solid var(--line)}:root[data-theme=dark] .theme-option{background:var(--white);color:#E7EBF3}:root[data-theme=dark] .theme-option.selected{background:var(--primary);color:#fff}:root[data-theme=dark] .confirm-dialog{background:var(--white)}:root[data-theme=dark] .popover-logout{background:var(--error);color:#fff}@media (max-width:700px){.topbar{gap:10px}.user-copy{display:none}.topbar-actions{gap:8px}}.sidebar{position:fixed;inset:0 auto 0 0;z-index:60;width:280px;padding:30px 18px 22px;display:flex;flex-direction:column;background:var(--deep);color:#fff}.sidebar-content{flex:1 1 auto;min-height:0;overflow-y:auto}.sidebar-brand{padding:0 14px 34px;color:#fff;font-size:1.15rem;font-weight:800}.brand b,.sidebar-brand b{color:var(--gold)}.sidebar-label{display:block;margin-top:18px;padding:0 14px 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a{min-height:40px;font-size:.9rem;color:rgba(255,255,255,.85)}.submenu-icon{font-size:1.1rem;color:var(--gold)}.sidebar-nav{display:grid;grid-gap:6px;gap:6px}.sidebar-nav a,.sidebar-nav button{display:flex;align-items:center;gap:14px;width:100%;min-height:44px;padding:8px 14px;border:0;border-left:4px solid transparent;border-radius:10px;background:transparent;color:#fff;font-size:.92rem;text-align:left}.sidebar-nav a.active,.sidebar-nav a:hover{border-left-color:var(--gold);background:rgba(39,83,157,.45)}.sidebar-nav .nav-icon{width:24px;font-size:1.35rem;font-variation-settings:"FILL" 0,"wght" 400,"GRAD" 0,"opsz" 24;color:var(--gold)}.sidebar-footer{flex:0 0 auto;margin-top:auto;padding-top:24px}.sidebar .nav-logout{justify-content:flex-start;border:1px solid rgba(255,255,255,.25)!important;border-radius:9px!important;background:transparent;color:#fff}.sidebar 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20px;background:linear-gradient(135deg,#0b234d,#071a3d)}.study-card-header h3{max-width:220px;margin:12px 0 0;color:#fff;font-size:1.2rem}.study-card-header .material-symbols-outlined{flex:0 0 auto;font-size:46px;color:var(--gold)}.study-card .badge{padding:3px 9px;background:rgba(17,94,163,.8);color:var(--gold);font-size:.67rem}.study-card>p{flex:1 1;margin:0;padding:18px 20px 12px;color:#586987;font-size:.9rem;line-height:1.55}.study-card>a{display:flex;align-items:center;justify-content:space-between;min-height:56px;padding:12px 20px;border-top:1px solid var(--line);color:var(--gold-dark);font-weight:800}.dashboard-section-heading .button span,.exam-card .button span,.study-card>a span{font-size:1.5rem;font-variation-settings:"FILL" 0,"wght" 400,"GRAD" 0,"opsz" 24}.exam-list{display:grid;grid-gap:12px;gap:12px}.exam-card{display:flex;align-items:center;gap:20px;min-height:92px;padding:14px 20px;border:1px solid var(--line);border-radius:12px;background:#fff;box-shadow:0 4px 14px 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