:root{--bg-primary: #0a0e17;--bg-secondary: #111827;--bg-card: rgba(17, 24, 39, .75);--bg-card-hover: rgba(31, 41, 55, .85);--border-color: rgba(255, 255, 255, .08);--border-highlight: rgba(99, 102, 241, .4);--text-primary: #f9fafb;--text-secondary: #9ca3af;--text-muted: #6b7280;--accent-indigo: #6366f1;--accent-cyan: #06b6d4;--accent-emerald: #10b981;--accent-amber: #f59e0b;--accent-rose: #f43f5e;--accent-purple: #8b5cf6;--glass-glow: 0 8px 32px 0 rgba(0, 0, 0, .45);--radius-lg: 16px;--radius-md: 10px;--radius-sm: 6px;--transition: all .25s cubic-bezier(.4, 0, .2, 1)}[data-theme=light]{--bg-primary: #f3f4f6;--bg-secondary: #ffffff;--bg-card: rgba(255, 255, 255, .9);--bg-card-hover: rgba(243, 244, 246, .95);--border-color: rgba(0, 0, 0, .08);--border-highlight: rgba(99, 102, 241, .5);--text-primary: #111827;--text-secondary: #4b5563;--text-muted: #9ca3af;--glass-glow: 0 8px 30px rgba(0, 0, 0, .06)}*{box-sizing:border-box;margin:0;padding:0}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background-color:var(--bg-primary);color:var(--text-primary);min-height:100vh;line-height:1.5;background-image:radial-gradient(at 0% 0%,rgba(99,102,241,.12) 0px,transparent 50%),radial-gradient(at 100% 0%,rgba(6,182,212,.1) 0px,transparent 50%),radial-gradient(at 50% 100%,rgba(139,92,246,.08) 0px,transparent 50%);background-attachment:fixed}.container{max-width:1240px;margin:0 auto;padding:24px 20px 80px}header{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:16px;padding-bottom:24px;border-bottom:1px solid var(--border-color);margin-bottom:28px}.brand-section{display:flex;align-items:center;gap:14px}.brand-logo{width:48px;height:48px;border-radius:12px;background:linear-gradient(135deg,var(--accent-indigo),var(--accent-cyan));display:flex;align-items:center;justify-content:center;font-size:24px;box-shadow:0 4px 16px #6366f159}.brand-title h1{font-family:Outfit,sans-serif;font-size:1.85rem;font-weight:800;letter-spacing:-.03em;background:linear-gradient(90deg,#fff,#c7d2fe);-webkit-background-clip:text;-webkit-text-fill-color:transparent}[data-theme=light] .brand-title h1{background:linear-gradient(90deg,#1e1b4b,#4338ca);-webkit-background-clip:text;-webkit-text-fill-color:transparent}.brand-subtitle{display:flex;align-items:center;gap:8px;font-size:.82rem;color:var(--text-secondary)}.badge-tag{display:inline-block;padding:2px 8px;border-radius:6px;background:#6366f126;color:#818cf8;font-size:.72rem;font-weight:700;text-transform:uppercase;border:1px solid rgba(99,102,241,.3)}.header-actions{display:flex;align-items:center;gap:12px;flex-wrap:wrap}.user-pill{display:flex;align-items:center;gap:10px;background:var(--bg-card);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);padding:6px 14px;border-radius:9999px;border:1px solid var(--border-color);font-size:.85rem}.user-status-dot{width:8px;height:8px;border-radius:50%;background-color:var(--accent-emerald);box-shadow:0 0 8px var(--accent-emerald)}.user-status-dot.offline{background-color:var(--accent-amber);box-shadow:0 0 8px var(--accent-amber)}.btn{display:inline-flex;align-items:center;gap:8px;font-size:.85rem;font-weight:600;padding:8px 16px;border-radius:var(--radius-sm);border:1px solid var(--border-color);background:var(--bg-card);color:var(--text-primary);cursor:pointer;transition:var(--transition)}.btn:hover{background:var(--bg-card-hover);border-color:var(--border-highlight);transform:translateY(-1px)}.btn-primary{background:linear-gradient(135deg,var(--accent-indigo),#4f46e5);border-color:transparent;color:#fff;box-shadow:0 4px 14px #6366f14d}.btn-primary:hover{background:linear-gradient(135deg,#4f46e5,#4338ca);box-shadow:0 6px 20px #6366f173}.btn-secondary{background:#ffffff0d}.btn-icon-only{padding:8px;border-radius:50%;width:36px;height:36px;justify-content:center}.dashboard-grid{display:grid;grid-template-columns:280px 1fr;gap:20px;margin-bottom:28px}@media (max-width: 900px){.dashboard-grid{grid-template-columns:1fr}}.overall-card{background:var(--bg-card);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);border:1px solid var(--border-color);border-radius:var(--radius-lg);padding:24px;display:flex;flex-direction:column;align-items:center;justify-content:center;box-shadow:var(--glass-glow);text-align:center}.progress-circle-wrapper{position:relative;width:140px;height:140px;margin-bottom:14px}.progress-circle-svg{transform:rotate(-90deg);width:140px;height:140px}.circle-bg{fill:none;stroke:#ffffff14;stroke-width:10}[data-theme=light] .circle-bg{stroke:#0000000f}.circle-progress{fill:none;stroke:url(#progressGradient);stroke-width:10;stroke-linecap:round;stroke-dasharray:377;stroke-dashoffset:377;transition:stroke-dashoffset .8s cubic-bezier(.4,0,.2,1)}.progress-text-center{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);text-align:center}.progress-percent-val{font-size:2rem;font-weight:800;color:var(--text-primary);line-height:1}.progress-label-sub{font-size:.72rem;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.05em;margin-top:4px}.metrics-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}@media (max-width: 768px){.metrics-grid{grid-template-columns:repeat(2,1fr)}}.stat-card{background:var(--bg-card);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);border:1px solid var(--border-color);border-radius:var(--radius-lg);padding:18px 20px;display:flex;flex-direction:column;justify-content:space-between;box-shadow:var(--glass-glow);position:relative;overflow:hidden;transition:var(--transition)}.stat-card:before{content:"";position:absolute;top:0;left:0;width:100%;height:3px;background:var(--stat-color, var(--accent-indigo))}.stat-card.clickable-stat{cursor:pointer;-webkit-user-select:none;user-select:none}.stat-card.clickable-stat:hover{transform:translateY(-3px);border-color:var(--stat-color);box-shadow:0 10px 25px #00000073}.stat-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px}.stat-title{font-size:.88rem;font-weight:700;color:var(--text-primary);display:flex;align-items:center;gap:6px}.stat-badge-percent{font-size:.72rem;font-weight:700;background:#ffffff14;color:var(--text-primary);padding:2px 8px;border-radius:9999px;border:1px solid var(--border-color)}.stat-count{font-size:1.65rem;font-weight:800;color:var(--text-primary);margin-bottom:6px;font-family:Outfit,sans-serif;letter-spacing:-.02em}.stat-progress-bar{height:6px;background:#ffffff14;border-radius:4px;overflow:hidden;margin-bottom:5px}.stat-progress-fill{height:100%;border-radius:4px;background:var(--stat-color, var(--accent-indigo));width:0%;transition:width .6s cubic-bezier(.16,1,.3,1)}.stat-hint{font-size:.7rem;color:var(--text-muted);transition:var(--transition)}.stat-card:hover .stat-hint{color:var(--stat-color)}.toolbar{background:var(--bg-card);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);border:1px solid var(--border-color);border-radius:var(--radius-lg);padding:14px 18px;margin-bottom:24px;display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between}.search-box{display:flex;align-items:center;gap:8px;background:#0003;border:1px solid var(--border-color);border-radius:var(--radius-sm);padding:8px 14px;flex:1;min-width:220px}[data-theme=light] .search-box{background:#00000008}.search-box input{background:transparent;border:none;outline:none;color:var(--text-primary);font-size:.88rem;width:100%}.filter-pills{display:flex;align-items:center;gap:6px;flex-wrap:wrap}.filter-btn{background:transparent;border:1px solid transparent;color:var(--text-secondary);font-size:.8rem;font-weight:600;padding:6px 12px;border-radius:20px;cursor:pointer;transition:var(--transition)}.filter-btn:hover{color:var(--text-primary);background:#ffffff0f}.filter-btn.active{background:#6366f133;color:#a5b4fc;border-color:#6366f166}.toolbar-extra-actions{display:flex;gap:8px}.subject-nav-wrapper{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:20px;flex-wrap:wrap}.subject-nav{display:flex;align-items:center;gap:8px;overflow-x:auto;padding:4px 2px;-webkit-overflow-scrolling:touch;scrollbar-width:none;flex:1}.subject-nav::-webkit-scrollbar{display:none}.subject-pill{display:inline-flex;align-items:center;gap:6px;background:var(--bg-card);border:1px solid var(--border-color);color:var(--text-secondary);font-size:.82rem;font-weight:600;padding:8px 14px;border-radius:9999px;cursor:pointer;white-space:nowrap;transition:var(--transition);-webkit-user-select:none;user-select:none}.subject-pill:hover{color:var(--text-primary);border-color:var(--border-highlight);background:var(--bg-card-hover)}.subject-pill.active{background:linear-gradient(135deg,#6366f140,#06b6d440);color:#fff;border-color:var(--accent-indigo);box-shadow:0 0 14px #6366f140}.subject-pill-marks{font-size:.7rem;opacity:.8;background:#ffffff1a;padding:1px 6px;border-radius:6px}.expand-toggle-btn{background:transparent;border:1px solid var(--border-color);color:var(--text-secondary);font-size:.78rem;font-weight:600;padding:7px 12px;border-radius:var(--radius-sm);cursor:pointer;display:inline-flex;align-items:center;gap:6px;white-space:nowrap;transition:var(--transition)}.expand-toggle-btn:hover{color:var(--text-primary);border-color:var(--border-highlight);background:var(--bg-card)}.sections-list{display:flex;flex-direction:column;gap:18px}.section-card{background:var(--bg-card);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);border:1px solid var(--border-color);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--glass-glow);transition:var(--transition)}.section-card:hover{border-color:var(--border-highlight)}.section-header{padding:16px 20px;display:flex;align-items:center;justify-content:space-between;cursor:pointer;background:#ffffff04;-webkit-user-select:none;user-select:none;transition:var(--transition)}.section-header:hover{background:#ffffff0a}.section-info-left{display:flex;align-items:center;gap:14px;flex:1}.section-icon{font-size:1.5rem;width:40px;height:40px;display:flex;align-items:center;justify-content:center;background:#ffffff0a;border-radius:10px}.section-titles h3{font-size:1.05rem;font-weight:700;color:var(--text-primary)}.section-meta{display:flex;align-items:center;gap:12px;font-size:.78rem;color:var(--text-secondary);margin-top:2px}.marks-badge{background:#10b98126;color:#34d399;border:1px solid rgba(16,185,129,.3);padding:2px 8px;border-radius:6px;font-weight:700;font-size:.72rem}.section-stats-right{display:flex;align-items:center;gap:16px}.section-mini-progress{width:120px;display:flex;flex-direction:column;gap:4px}@media (max-width: 600px){.section-mini-progress{display:none}}.mini-bar-bg{height:6px;background:#ffffff14;border-radius:4px;overflow:hidden}.mini-bar-fill{height:100%;background:linear-gradient(90deg,var(--accent-indigo),var(--accent-emerald));border-radius:4px;transition:width .4s ease}.mini-progress-label{font-size:.72rem;color:var(--text-muted);text-align:right}.collapse-arrow{font-size:.9rem;color:var(--text-muted);transition:transform .3s ease}.section-card.expanded .collapse-arrow{transform:rotate(180deg)}.section-card.collapsed .section-body{display:none}.section-body{border-top:1px solid var(--border-color);padding:0}.topics-table{width:100%;border-collapse:collapse}.topics-table th{text-align:left;padding:10px 18px;font-size:.72rem;text-transform:uppercase;letter-spacing:.05em;color:var(--text-muted);border-bottom:1px solid var(--border-color);background:#0000001a}.topics-table th.center-col,.topics-table td.center-col{text-align:center;width:110px}.topics-table th.action-col,.topics-table td.action-col{text-align:center;width:70px}.topics-table td{padding:12px 18px;border-bottom:1px solid rgba(255,255,255,.04);font-size:.88rem;vertical-align:middle}.topics-table tr:last-child td{border-bottom:none}.topics-table tr:hover{background:#ffffff05}.topic-title-cell{font-weight:500;color:var(--text-primary);display:flex;align-items:center;gap:10px}.topic-status-badge{display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--text-muted);flex-shrink:0}.topic-status-badge.all-done{background:var(--accent-emerald);box-shadow:0 0 6px var(--accent-emerald)}.custom-checkbox-label{display:inline-flex;align-items:center;justify-content:center;cursor:pointer;position:relative;-webkit-user-select:none;user-select:none}.custom-checkbox-label input{position:absolute;opacity:0;cursor:pointer}.checkmark{width:22px;height:22px;background:#ffffff0d;border:1.5px solid rgba(255,255,255,.2);border-radius:6px;display:flex;align-items:center;justify-content:center;transition:var(--transition);color:transparent;font-size:13px;font-weight:700}[data-theme=light] .checkmark{background:#0000000a;border-color:#0003}.custom-checkbox-label.col-read .checkmark{border-color:#6366f159}.custom-checkbox-label.col-rev1 .checkmark{border-color:#f59e0b59}.custom-checkbox-label.col-rev2 .checkmark{border-color:#8b5cf659}.custom-checkbox-label.col-mcq .checkmark{border-color:#10b98159}.custom-checkbox-label.col-read:hover .checkmark{border-color:var(--accent-indigo);background:#6366f126}.custom-checkbox-label.col-rev1:hover .checkmark{border-color:var(--accent-amber);background:#f59e0b26}.custom-checkbox-label.col-rev2:hover .checkmark{border-color:var(--accent-purple);background:#8b5cf626}.custom-checkbox-label.col-mcq:hover .checkmark{border-color:var(--accent-emerald);background:#10b98126}@keyframes checkSpring{0%{transform:scale(.8)}50%{transform:scale(1.15)}to{transform:scale(1)}}.custom-checkbox-label input:checked~.checkmark{animation:checkSpring .22s cubic-bezier(.16,1,.3,1)}.custom-checkbox-label.col-read input:checked~.checkmark{background:var(--accent-indigo);border-color:var(--accent-indigo);color:#fff;box-shadow:0 0 10px #6366f166}.custom-checkbox-label.col-rev1 input:checked~.checkmark{background:var(--accent-amber);border-color:var(--accent-amber);color:#fff;box-shadow:0 0 10px #f59e0b66}.custom-checkbox-label.col-rev2 input:checked~.checkmark{background:var(--accent-purple);border-color:var(--accent-purple);color:#fff;box-shadow:0 0 10px #8b5cf666}.custom-checkbox-label.col-mcq input:checked~.checkmark{background:var(--accent-emerald);border-color:var(--accent-emerald);color:#fff;box-shadow:0 0 10px #10b98166}.topic-row.all-mastered{background:#10b9810a}.clear-search-btn{background:transparent;border:none;color:var(--text-muted);font-size:.85rem;cursor:pointer;padding:2px 6px;border-radius:50%;transition:var(--transition);display:flex;align-items:center;justify-content:center}.clear-search-btn:hover{color:var(--text-primary);background:#ffffff1a}.note-btn{background:transparent;border:none;color:var(--text-muted);cursor:pointer;font-size:1.1rem;transition:var(--transition);padding:4px 8px;border-radius:4px}.note-btn:hover,.note-btn.has-notes{color:var(--accent-amber)}.modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:#000000b3;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);display:flex;align-items:center;justify-content:center;z-index:1000;opacity:0;pointer-events:none;transition:opacity .25s ease;padding:16px}.modal-overlay.active{opacity:1;pointer-events:auto}.modal-box{background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius-lg);width:100%;max-width:520px;box-shadow:0 20px 40px #00000080;overflow:hidden;animation:modalScale .3s cubic-bezier(.16,1,.3,1)}@keyframes modalScale{0%{transform:scale(.95);opacity:0}to{transform:scale(1);opacity:1}}.modal-header{padding:18px 24px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--border-color)}.modal-header h3{font-size:1.15rem;font-weight:700}.modal-close-btn{background:transparent;border:none;color:var(--text-muted);font-size:1.4rem;cursor:pointer;line-height:1}.modal-close-btn:hover{color:var(--text-primary)}.modal-body{padding:24px}.form-group{margin-bottom:16px}.form-group label{display:block;font-size:.8rem;font-weight:600;color:var(--text-secondary);margin-bottom:6px}.form-group input,.form-group textarea{width:100%;padding:10px 14px;border-radius:var(--radius-sm);border:1px solid var(--border-color);background:#0003;color:var(--text-primary);font-size:.9rem;outline:none;font-family:inherit;transition:var(--transition)}[data-theme=light] .form-group input,[data-theme=light] .form-group textarea{background:#f9fafb}.form-group input:focus,.form-group textarea:focus{border-color:var(--accent-indigo);box-shadow:0 0 0 3px #6366f126}.form-help-text{font-size:.75rem;color:var(--text-muted);margin-top:4px}.modal-footer{padding:16px 24px;border-top:1px solid var(--border-color);display:flex;justify-content:flex-end;gap:10px}.toast-container{position:fixed;bottom:24px;right:24px;z-index:2000;display:flex;flex-direction:column;gap:10px}.toast{background:var(--bg-secondary);border:1px solid var(--border-highlight);border-radius:var(--radius-md);padding:12px 18px;color:var(--text-primary);font-size:.88rem;box-shadow:0 10px 30px #0006;display:flex;align-items:center;gap:10px;animation:slideInRight .3s ease}@keyframes slideInRight{0%{transform:translate(100%);opacity:0}to{transform:translate(0);opacity:1}}@media (max-width: 768px){.container{padding:14px 12px 60px}header{margin-bottom:16px;padding-bottom:14px;gap:10px}.brand-logo{width:38px;height:38px;font-size:18px;border-radius:10px}.brand-title h1{font-size:1.45rem}.user-pill{padding:4px 10px;font-size:.78rem}.btn{padding:6px 12px;font-size:.8rem}.dashboard-grid{grid-template-columns:1fr;gap:12px;margin-bottom:16px}.overall-card{padding:16px 14px}.progress-circle-wrapper,.progress-circle-svg{width:110px;height:110px}.metrics-grid{grid-template-columns:repeat(2,1fr);gap:10px}.stat-card{padding:12px 14px}.stat-count{font-size:1.35rem}.toolbar{padding:12px;margin-bottom:14px;gap:10px}.filter-pills{overflow-x:auto;width:100%;padding-bottom:4px;-webkit-overflow-scrolling:touch;scrollbar-width:none;flex-wrap:nowrap}.filter-pills::-webkit-scrollbar{display:none}.toolbar-extra-actions{width:100%;justify-content:flex-end}.subject-nav-wrapper{margin-bottom:14px;gap:8px}.topics-table,.topics-table tbody,.topics-table tr,.topics-table td{display:block;width:100%}.topics-table thead{display:none}.topic-row{padding:14px;border-bottom:1px solid var(--border-color);background:#ffffff03}.topics-table td{padding:0;border:none}.topics-table tr{display:grid;grid-template-columns:1fr 1fr 1fr 1fr;grid-template-areas:"title title title note" "read rev1 rev2 mcq";gap:10px 8px;align-items:center}.topics-table td:first-child{grid-area:title;margin-bottom:2px}.topics-table td[data-label=Read]{grid-area:read}.topics-table td[data-label="Rev 1"]{grid-area:rev1}.topics-table td[data-label="Rev 2"]{grid-area:rev2}.topics-table td[data-label=MCQ]{grid-area:mcq}.topics-table td[data-label=Notes]{grid-area:note;justify-self:end}.topic-title-cell{font-size:.92rem;line-height:1.4;font-weight:600}.custom-checkbox-label{width:100%;min-height:38px}.custom-checkbox-label .checkmark{width:100%;height:36px;border-radius:8px;font-size:.72rem;font-weight:700;letter-spacing:.01em;color:var(--text-secondary);background:#ffffff08}.custom-checkbox-label.col-read .checkmark:after{content:"Read";margin-left:2px}.custom-checkbox-label.col-rev1 .checkmark:after{content:"Rev 1";margin-left:2px}.custom-checkbox-label.col-rev2 .checkmark:after{content:"Rev 2";margin-left:2px}.custom-checkbox-label.col-mcq .checkmark:after{content:"MCQ";margin-left:2px}.custom-checkbox-label input:checked~.checkmark{color:#fff}.custom-checkbox-label.col-read input:checked~.checkmark:after{content:"✓ Read"}.custom-checkbox-label.col-rev1 input:checked~.checkmark:after{content:"✓ Rev 1"}.custom-checkbox-label.col-rev2 input:checked~.checkmark:after{content:"✓ Rev 2"}.custom-checkbox-label.col-mcq input:checked~.checkmark:after{content:"✓ MCQ"}.topics-table td.center-col:before{display:none}}