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.badge-re:before{color:#4338ca}.badge-rank{width:28px;height:28px;border-radius:var(--radius-full);display:inline-flex;align-items:center;justify-content:center;font-weight:800;font-size:var(--text-xs);font-family:var(--font-mono)}.badge-rank.rank-1{background:linear-gradient(135deg,#fbbf24,#f59e0b);color:#451a03}.badge-rank.rank-2{background:linear-gradient(135deg,#cbd5e1,#94a3b8);color:#1e293b}.badge-rank.rank-3{background:linear-gradient(135deg,#d97706,#b45309);color:#fff}.data-table-wrap{overflow-x:auto;border-radius:var(--radius-lg);border:1px solid var(--border-subtle);background:var(--bg-card);backdrop-filter:blur(12px);position:relative;-webkit-overflow-scrolling:touch}.data-table-wrap:before,.data-table-wrap:after{content:"";position:sticky;top:0;bottom:0;width:24px;z-index:3;pointer-events:none;display:none}.data-table{width:100%;border-collapse:collapse;font-size:var(--text-sm)}.data-table thead{position:sticky;top:0;z-index:2}.data-table th{padding:var(--space-sm) var(--space-md);text-align:left;font-weight:600;font-size:var(--text-xs);text-transform:uppercase;letter-spacing:.05em;color:var(--text-muted);background:var(--bg-secondary);border-bottom:1px solid var(--border-default);white-space:nowrap;user-select:none}.data-table th.sortable{cursor:pointer;transition:color var(--transition-fast)}.data-table th.sortable:hover{color:var(--emerald-400)}.data-table th .sort-icon{display:inline-block;margin-left:.25rem;opacity:.4;font-size:.625rem;vertical-align:middle;transition:opacity var(--transition-fast)}.data-table th.sort-asc .sort-icon,.data-table th.sort-desc .sort-icon{opacity:1;color:var(--emerald-400)}.data-table td{padding:var(--space-sm) var(--space-md);border-bottom:1px solid var(--border-subtle);color:var(--text-secondary);vertical-align:middle}.data-table tbody tr{transition:background var(--transition-fast)}.data-table tbody tr:hover{background:var(--bg-hover)}.data-table tbody tr:last-child td{border-bottom:none}.data-table tbody tr:active{background:var(--bg-active)}.data-table .col-sl,.data-table th.col-sl{width:50px;text-align:center;font-family:var(--font-mono)}.data-table .col-center,.data-table th.col-center{text-align:center}.data-table .col-date,.data-table th.col-date{text-align:right;white-space:nowrap}.data-table .col-num,.data-table th.col-num{font-family:var(--font-mono);font-variant-numeric:tabular-nums;text-align:right}.data-table .col-name,.data-table th.col-name{font-weight:500;color:var(--text-primary);text-align:left}.data-table .col-link a{color:var(--emerald-400);text-decoration:none}.data-table .col-link a:hover{text-decoration:underline}.mobile-cards-view{display:none!important}@media(max-width:768px){.desktop-table-view{display:none!important}.mobile-cards-view{display:flex!important;flex-direction:column}}.progress-bar{height:6px;background:var(--bg-tertiary);border-radius:var(--radius-full);overflow:hidden;min-width:60px}.progress-bar 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var(--space-lg);text-align:center;color:var(--text-muted)}.empty-state svg{width:48px;height:48px;margin-bottom:var(--space-md);opacity:.4}.empty-state h4{font-size:var(--text-base);font-weight:600;color:var(--text-secondary)}.empty-state p{font-size:var(--text-sm);max-width:300px;margin-top:var(--space-xs)}[data-tooltip]{position:relative}[data-tooltip]:after{content:attr(data-tooltip);position:absolute;bottom:calc(100% + 6px);left:50%;transform:translate(-50%) scale(.95);padding:.375rem .625rem;background:var(--slate-700);color:var(--text-primary);font-size:var(--text-xs);font-weight:500;border-radius:var(--radius-sm);white-space:nowrap;pointer-events:none;opacity:0;transition:all var(--transition-fast);z-index:60}[data-tooltip]:hover:after{opacity:1;transform:translate(-50%) scale(1)}@media(hover:none){[data-tooltip]:after{display:none}}.leaderboard{background:var(--bg-card);border:1px solid 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.name{flex:1;font-weight:500;color:var(--text-primary);font-size:var(--text-sm);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.leaderboard-item .value{font-family:var(--font-mono);font-weight:600;font-size:var(--text-sm);color:var(--emerald-400)}.bar-chart{width:100%}.bar-chart .bar-row{display:flex;align-items:center;gap:.75rem;margin-bottom:.5rem}.bar-chart .bar-label{font-family:var(--font-mono);font-size:var(--text-xs);font-weight:600;width:40px;text-align:right;flex-shrink:0}.bar-chart .bar-track{flex:1;height:24px;background:var(--bg-tertiary);border-radius:var(--radius-sm);overflow:hidden;position:relative;display:flex}.bar-chart .bar-fill{height:100%;border-radius:var(--radius-sm);transition:width .6s var(--ease-out);display:flex;align-items:center;padding:0 .5rem;font-family:var(--font-mono);font-size:var(--text-xs);font-weight:600;color:#fff;min-width:fit-content}.bar-chart .bar-fill.camp{opacity:1}.bar-chart .bar-fill.total{opacity:.35}.bar-chart .bar-value{font-family:var(--font-mono);font-size:var(--text-xs);font-weight:600;color:var(--text-secondary);width:36px;text-align:left;flex-shrink:0}.theme-toggle{padding:.5rem;border-radius:var(--radius-md);background:transparent;border:1px solid var(--border-default);color:var(--text-secondary);cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all var(--transition-fast);min-width:40px;min-height:40px}.theme-toggle:hover{background:var(--bg-hover);color:var(--emerald-400);border-color:var(--border-hover)}.login-page{display:flex;align-items:center;justify-content:center;min-height:100vh;min-height:100dvh;padding:var(--space-md)}.login-card{background:var(--bg-card);border:1px solid var(--border-default);border-radius:var(--radius-xl);padding:var(--space-2xl);width:100%;max-width:420px;text-align:center;backdrop-filter:blur(20px);box-shadow:var(--shadow-lg),var(--shadow-glow-lg);animation:scaleIn .4s var(--ease-out)}.login-card .login-logo{font-size:clamp(2rem,5vw,2.5rem);margin-bottom:var(--space-md)}.login-card h1{font-size:var(--text-xl);font-weight:800;letter-spacing:-.025em;margin-bottom:var(--space-xs);background:linear-gradient(135deg,var(--emerald-400),var(--emerald-300));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}.login-card .login-sub{color:var(--text-secondary);font-size:var(--text-sm);margin-bottom:var(--space-xl)}.login-btn-wrap{display:flex;justify-content:center;margin-bottom:var(--space-lg)}.login-error{background:#f43f5e1a;border:1px solid rgba(244,63,94,.2);border-radius:var(--radius-md);padding:var(--space-sm) var(--space-md);color:var(--rose-400);font-size:var(--text-sm);margin-top:var(--space-md);animation:fadeIn .3s ease-out}.login-loading{display:flex;align-items:center;justify-content:center;gap:.75rem;padding:var(--space-md);color:var(--text-secondary);font-size:var(--text-sm)}.dashboard-grid{display:grid;grid-template-columns:1fr 320px;gap:var(--space-lg)}.dashboard-sidebars{display:flex;flex-direction:column;gap:var(--space-lg)}@media(max-width:1024px){.dashboard-grid{grid-template-columns:1fr}}@media(max-width:768px){.dashboard-grid{gap:var(--space-md)}}.profile-header{display:flex;align-items:center;gap:var(--space-md);margin-bottom:var(--space-lg)}.profile-avatar{width:56px;height:56px;border-radius:var(--radius-lg);background:linear-gradient(135deg,var(--emerald-600),var(--emerald-400));display:flex;align-items:center;justify-content:center;font-size:var(--text-xl);font-weight:800;color:#fff;flex-shrink:0}.profile-info h1{margin-bottom:.125rem}.profile-info p{color:var(--text-secondary);font-size:var(--text-sm);display:flex;align-items:center;flex-wrap:wrap;gap:.5rem;margin-top:var(--space-xs)}.cf-handle-chip{display:inline-flex;align-items:center;gap:.25rem;padding:.125rem .5rem;border-radius:var(--radius-sm);font-size:var(--text-xs);font-weight:600;border:1px solid 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.tag-count{font-family:var(--font-mono);font-weight:700;color:var(--emerald-400)}.lc-diff-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--space-sm);margin-bottom:var(--space-md)}.lc-diff-box{padding:var(--space-sm);border-radius:var(--radius-md);background:var(--bg-secondary);border:1px solid var(--border-subtle);text-align:center}.lc-diff-box.easy{border-top:3px solid #00b8a3}.lc-diff-box.medium{border-top:3px solid #ffc01e}.lc-diff-box.hard{border-top:3px solid #ff375f}.lc-diff-label{font-size:var(--text-xs);font-weight:700;text-transform:uppercase;letter-spacing:.05em;margin-bottom:var(--space-xs)}.lc-diff-box.easy .lc-diff-label{color:#00b8a3}.lc-diff-box.medium .lc-diff-label{color:#ffc01e}.lc-diff-box.hard .lc-diff-label{color:#ff375f}.lc-diff-value{font-size:var(--text-lg);font-weight:800;font-family:var(--font-mono);color:var(--text-primary)}.lc-diff-sub{font-size:var(--text-xs);color:var(--text-muted)}.lc-segmented-bar{display:flex;height:8px;border-radius:var(--radius-full);overflow:hidden;background:var(--bg-tertiary);margin-bottom:var(--space-md)}.lc-seg-easy{background:#00b8a3}.lc-seg-medium{background:#ffc01e}.lc-seg-hard{background:#ff375f}.lc-skills-group{margin-top:var(--space-md)}.lc-skills-group h5{font-size:var(--text-xs);text-transform:uppercase;letter-spacing:.05em;color:var(--text-muted);margin-bottom:.5rem}.toast-container{position:fixed;top:1.5rem;right:1.5rem;z-index:99999;display:flex;flex-direction:column;gap:.75rem;pointer-events:none;max-width:min(440px,calc(100vw - 2rem))}@media(max-width:640px){.toast-container{top:auto;bottom:calc(5rem + 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var(--border-subtle);border-radius:var(--radius-xl);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);box-shadow:var(--shadow-lg),0 0 0 1px #ffffff08;overflow:hidden;display:flex;flex-direction:column}.heatmap-header{display:flex;align-items:center;justify-content:space-between;padding:var(--space-md) var(--space-lg);border-bottom:1px solid var(--border-subtle);background:#0f172a59;flex-wrap:wrap;gap:var(--space-md)}.heatmap-header-title{display:flex;align-items:center;gap:.75rem;flex-wrap:wrap}.heatmap-header-title h3{font-size:var(--text-lg);font-weight:700;color:var(--text-primary);margin:0;display:flex;align-items:center;gap:.5rem}.heatmap-header-title .month-badge{font-size:var(--text-xs);font-weight:600;padding:.25rem .625rem;border-radius:9999px;background:#10b9811f;color:var(--emerald-400);border:1px solid rgba(16,185,129,.25);font-family:var(--font-mono)}.heatmap-controls{display:flex;align-items:center;gap:var(--space-md);flex-wrap:wrap}.heatmap-search{position:relative;min-width:180px}.heatmap-search input{width:100%;padding:.4375rem .75rem .4375rem 2.125rem;background:var(--bg-tertiary);border:1px solid var(--border-subtle);border-radius:var(--radius-md);color:var(--text-primary);font-size:var(--text-xs);outline:none;transition:all var(--transition-fast);min-height:36px}.heatmap-search input:focus{border-color:var(--emerald-500);background:var(--bg-secondary);box-shadow:0 0 0 2px #10b98126}.heatmap-search .search-icon{position:absolute;left:.625rem;top:50%;transform:translateY(-50%);color:var(--text-muted);pointer-events:none}.heatmap-scroll{overflow-x:auto;overflow-y:auto;max-height:68vh;max-height:68dvh;position:relative;scrollbar-width:thin;scrollbar-color:rgba(255,255,255,.15) transparent;-webkit-overflow-scrolling:touch}.heatmap-scroll::-webkit-scrollbar{width:8px;height:8px}.heatmap-scroll::-webkit-scrollbar-thumb{background:#ffffff1f;border-radius:4px}.heatmap-scroll::-webkit-scrollbar-thumb:hover{background:#ffffff40}.heatmap-grid{display:grid;min-width:max-content;padding:var(--space-sm) var(--space-md) var(--space-md) var(--space-md);gap:4px;align-items:center}.heatmap-corner{position:sticky;top:0;left:0;z-index:10;background:var(--bg-card);padding:var(--space-sm) var(--space-sm);font-size:var(--text-xs);font-weight:700;text-transform:uppercase;letter-spacing:.05em;color:var(--text-muted);border-bottom:2px solid var(--border-subtle);display:flex;align-items:center;justify-content:space-between;height:48px;box-sizing:border-box;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px)}.heatmap-date-cell{position:sticky;top:0;z-index:8;background:var(--bg-card);padding:.5rem .25rem;text-align:center;font-family:var(--font-mono);font-size:var(--text-xs);font-weight:700;color:var(--text-muted);white-space:nowrap;line-height:1.2;border-bottom:2px solid var(--border-subtle);width:32px;height:48px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;user-select:none;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px)}.heatmap-date-cell .day-num{font-size:var(--text-xs);font-weight:700;color:var(--text-secondary)}.heatmap-date-cell .day-name{font-size:.5625rem;font-weight:600;text-transform:uppercase;letter-spacing:.02em;opacity:.6}.heatmap-date-cell.weekend .day-name{color:var(--amber-400, #f59e0b);opacity:.85}.heatmap-date-cell.today{background:#10b98114;border-bottom-color:var(--emerald-400)}.heatmap-date-cell.today .day-num{color:var(--emerald-400)}.heatmap-date-cell.today .day-name{color:var(--emerald-400);opacity:1}.heatmap-name-cell{position:sticky;left:0;z-index:6;background:var(--bg-card);padding:.5rem .625rem;font-size:var(--text-xs);color:var(--text-primary);white-space:nowrap;display:flex;align-items:center;gap:.5rem;cursor:pointer;border-radius:var(--radius-sm);transition:all var(--transition-fast);border-right:1px solid rgba(255,255,255,.04);-webkit-tap-highlight-color:transparent}.heatmap-name-cell:hover{background:var(--bg-hover);transform:translate(2px)}.heatmap-name-cell:hover .student-name-text{color:var(--emerald-400)}.heatmap-name-cell .hm-rank-badge{font-family:var(--font-mono);font-size:.625rem;font-weight:700;width:22px;height:22px;display:flex;align-items:center;justify-content:center;border-radius:6px;background:var(--bg-tertiary);color:var(--text-muted);flex-shrink:0}.heatmap-name-cell .hm-rank-badge.top-1{background:linear-gradient(135deg,#fbbf2433,#d977064d);color:#fbbf24;border:1px solid rgba(251,191,36,.4)}.heatmap-name-cell .hm-rank-badge.top-2{background:linear-gradient(135deg,#cbd5e133,#94a3b84d);color:#e2e8f0;border:1px solid rgba(203,213,225,.4)}.heatmap-name-cell .hm-rank-badge.top-3{background:linear-gradient(135deg,#d9770633,#b453094d);color:#f59e0b;border:1px solid rgba(217,119,6,.4)}.heatmap-name-cell .hm-avatar{width:28px;height:28px;border-radius:8px;background:linear-gradient(135deg,#059669,#0d9488);color:#fff;font-size:.625rem;font-weight:700;display:flex;align-items:center;justify-content:center;flex-shrink:0;box-shadow:0 2px 4px #0003}.heatmap-name-cell .hm-student-meta{display:flex;flex-direction:column;min-width:0;flex:1}.heatmap-name-cell .student-name-text{font-weight:600;font-size:var(--text-xs);color:var(--text-primary);line-height:1.25;transition:color var(--transition-fast)}.heatmap-name-cell .student-sub-row{display:flex;align-items:center;gap:.5rem;margin-top:1px}.heatmap-name-cell .student-matric{font-family:var(--font-mono);font-size:.625rem;color:var(--text-muted)}.heatmap-name-cell .student-total-pill{font-family:var(--font-mono);font-size:.625rem;font-weight:700;color:var(--emerald-400);background:#10b9811a;padding:.0625rem .375rem;border-radius:4px}.heatmap-cell{width:32px;height:32px;border-radius:6px;transition:transform .15s cubic-bezier(.4,0,.2,1),box-shadow .15s cubic-bezier(.4,0,.2,1);cursor:pointer;position:relative;box-sizing:border-box}.heatmap-cell:hover{transform:scale(1.22);z-index:5;box-shadow:0 0 12px #10b98180,0 0 0 1.5px #fff}.heatmap-cell.level-0{background:#ffffff09;border:1px solid rgba(255,255,255,.04)}.heatmap-cell.level-0:hover{background:#ffffff14;border-color:#ffffff26;box-shadow:0 0 8px #ffffff1a}.heatmap-cell.level-1{background:#064e3b;border:1px solid #065f46}.heatmap-cell.level-2{background:#059669;border:1px solid #10b981}.heatmap-cell.level-3{background:#10b981;border:1px solid #34d399;box-shadow:0 0 6px #10b98140}.heatmap-cell.level-4{background:#34d399;border:1px solid #6ee7b7;box-shadow:0 0 10px #34d39980}[data-theme=light] .heatmap-header{background:#f1f5f9b3}[data-theme=light] .heatmap-name-cell .hm-avatar{background:linear-gradient(135deg,#059669,#0d9488);color:#fff;box-shadow:0 1px 3px #00000026}[data-theme=light] .heatmap-name-cell .hm-rank-badge{background:#f1f5f9;color:#475569;border:1px solid #e2e8f0}[data-theme=light] .heatmap-name-cell .hm-rank-badge.top-1{background:#fef3c7;color:#b45309;border:1px solid #fcd34d}[data-theme=light] .heatmap-name-cell .hm-rank-badge.top-2{background:#f1f5f9;color:#334155;border:1px solid #cbd5e1}[data-theme=light] .heatmap-name-cell .hm-rank-badge.top-3{background:#ffedd5;color:#c2410c;border:1px solid #fdba74}[data-theme=light] .heatmap-name-cell .student-total-pill{background:#dcfce7;color:#15803d;border:1px solid #bbf7d0}[data-theme=light] .heatmap-name-cell .student-matric{color:#64748b}[data-theme=light] .heatmap-name-cell .student-name-text{color:#0f172a}[data-theme=light] .heatmap-name-cell{background:#fff;border-right:1px solid #e2e8f0}[data-theme=light] .heatmap-name-cell:hover{background:#f8fafc}[data-theme=light] .heatmap-corner{background:#fff;border-bottom:2px solid #e2e8f0;border-right:1px solid #e2e8f0;color:#64748b}[data-theme=light] .heatmap-date-cell{background:#fff;border-bottom:2px solid #e2e8f0;color:#64748b}[data-theme=light] .heatmap-date-cell.today{background:#ecfdf5;border-bottom-color:#10b981}[data-theme=light] .heatmap-date-cell.today .day-num,[data-theme=light] .heatmap-date-cell.today .day-name{color:#059669}[data-theme=light] .heatmap-cell.level-0{background:#f1f5f9;border:1px solid #e2e8f0}[data-theme=light] .heatmap-cell.level-0:hover{background:#e2e8f0;border-color:#cbd5e1}[data-theme=light] .heatmap-cell.level-1{background:#a7f3d0;border:1px solid #6ee7b7}[data-theme=light] .heatmap-cell.level-2{background:#34d399;border:1px solid #10b981}[data-theme=light] .heatmap-cell.level-3{background:#10b981;border:1px solid #059669}[data-theme=light] .heatmap-cell.level-4{background:#047857;border:1px solid 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.tt-date{font-size:var(--text-xs);color:var(--text-secondary);margin-bottom:.5rem}.heatmap-tooltip .tt-metric-box{display:flex;align-items:center;gap:.5rem;padding:var(--space-xs) var(--space-sm);background:#10b9811f;border:1px solid rgba(16,185,129,.25);border-radius:var(--radius-sm);color:var(--emerald-400);font-weight:700;font-size:var(--text-sm);font-family:var(--font-mono);margin-bottom:.5rem}.heatmap-tooltip .tt-list{border-top:1px solid rgba(255,255,255,.08);padding-top:.5rem;display:flex;flex-direction:column;gap:.25rem;font-size:var(--text-xs);color:var(--text-muted)}.heatmap-tooltip .tt-item{display:flex;align-items:center;gap:.375rem}[data-theme=light] .heatmap-tooltip{background:#fffffffa;border:1px solid rgba(0,0,0,.1);box-shadow:0 20px 30px -4px #00000026,0 8px 12px -4px #00000014;color:#0f172a}[data-theme=light] .heatmap-tooltip .tt-student-name{color:#0f172a}[data-theme=light] .heatmap-tooltip .tt-matric,[data-theme=light] .heatmap-tooltip 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