:root{--m-radius: 16px;--m-radius-lg: 24px;--m-glass: rgba(12, 12, 20, .6);--m-glass-hover: rgba(20, 20, 35, .85);--m-border: rgba(255, 255, 255, .06);--m-border-hover: rgba(255, 255, 255, .14);--m-shadow: 0 8px 32px rgba(0, 0, 0, .25);--m-shadow-lg: 0 16px 48px rgba(0, 0, 0, .35);--diff-easy: #10b981;--diff-medium: #f59e0b;--diff-hard: #ef4444;--tier-beginner: #60a5fa;--tier-core: #34d399;--tier-intermediate: #fbbf24;--tier-advanced: #f472b6;--tier-expert: #a78bfa;--aurora: linear-gradient(135deg, #7c3aed 0%, #ec4899 40%, #f43f5e 70%, #3b82f6 100%);--aurora-soft: linear-gradient(135deg, rgba(124,58,237,.15), rgba(236,72,153,.1), rgba(59,130,246,.12))}[data-theme=light]{--m-glass: rgba(255, 255, 255, .75);--m-glass-hover: rgba(248, 250, 252, .92);--m-border: rgba(0, 0, 0, .07);--m-border-hover: rgba(0, 0, 0, .14)}.mastery-container{max-width:1100px;margin:0 auto;padding:0 1.5rem 6rem;display:flex;flex-direction:column;gap:1.5rem;min-height:100vh}.mastery-sticky-bar{position:fixed;top:0;left:0;right:0;z-index:999;transform:translateY(-100%);opacity:0;transition:transform .35s cubic-bezier(.16,1,.3,1),opacity .35s ease;pointer-events:none}.mastery-sticky-bar.visible{transform:translateY(0);opacity:1;pointer-events:auto}.sticky-bar-inner{max-width:1100px;margin:0 auto;padding:.65rem 1.5rem;display:flex;align-items:center;justify-content:space-between;gap:1.5rem;background:#080810e0;backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-bottom:1px solid var(--m-border);box-shadow:0 4px 24px #0006}[data-theme=light] .sticky-bar-inner{background:#ffffffeb}.sticky-bar-left{display:flex;align-items:center;gap:.85rem}.sticky-ring-mini{position:relative;width:32px;height:32px;flex-shrink:0}.sticky-ring-mini svg{display:block}.sticky-ring-pct{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;align-items:center;justify-content:center;font-size:.55rem;font-weight:700}.sticky-bar-title{font-family:var(--font-heading);font-weight:700;font-size:.95rem}.sticky-bar-stat{font-size:.8rem;color:var(--text-muted);font-weight:500}.sticky-bar-streak{font-size:.8rem;font-weight:600}.sticky-bar-right{display:flex;align-items:center;gap:1rem;flex:1;max-width:400px}.sticky-bar-progress-track{flex:1;height:4px;background:#ffffff0f;border-radius:2px;overflow:hidden}[data-theme=light] .sticky-bar-progress-track{background:#0000000f}.sticky-bar-progress-fill{height:100%;background:var(--aurora);background-size:300% 100%;animation:aurora-shift 6s linear infinite;border-radius:2px;transition:width .6s ease}.sticky-bar-search{width:140px;background:#ffffff0a;border:1px solid var(--m-border);border-radius:8px;padding:.4rem .7rem;color:var(--text-main);font-size:.8rem;outline:none;transition:border-color .2s}.sticky-bar-search:focus{border-color:var(--primary)}@keyframes aurora-shift{0%{background-position:0% 50%}50%{background-position:100% 50%}to{background-position:0% 50%}}.mastery-hero{position:relative;background:var(--m-glass);backdrop-filter:blur(24px);-webkit-backdrop-filter:blur(24px);border:1px solid var(--m-border);border-radius:var(--m-radius-lg);padding:2.5rem;overflow:hidden;box-shadow:var(--m-shadow-lg)}.mastery-hero-bg-orbs{position:absolute;top:0;right:0;bottom:0;left:0;overflow:hidden;pointer-events:none}.orb{position:absolute;border-radius:50%;filter:blur(80px);opacity:.35}.orb-1{width:300px;height:300px;background:#7c3aed66;top:-80px;right:-60px;animation:orb-float 12s ease-in-out infinite}.orb-2{width:200px;height:200px;background:#ec48994d;bottom:-50px;left:10%;animation:orb-float 15s ease-in-out infinite reverse}.orb-3{width:160px;height:160px;background:#3b82f64d;top:20%;left:50%;animation:orb-float 10s ease-in-out infinite}@keyframes orb-float{0%,to{transform:translate(0) scale(1)}33%{transform:translate(20px,-15px) scale(1.1)}66%{transform:translate(-15px,10px) scale(.95)}}.mastery-hero-content{position:relative;z-index:1;display:flex;align-items:center;justify-content:space-between;gap:2.5rem}.hero-left{flex:1;display:flex;flex-direction:column;gap:1rem}.hero-title{font-family:var(--font-heading);font-size:2.25rem;font-weight:800;line-height:1.15;letter-spacing:-.02em;margin:0}.hero-title-sub{display:block;font-size:.85rem;font-weight:600;color:var(--text-muted);text-transform:uppercase;letter-spacing:.15em;margin-bottom:.25rem}.hero-desc{font-size:.95rem;color:var(--text-muted);margin:0;line-height:1.5}.hero-stats-row{display:flex;gap:.65rem;flex-wrap:wrap;margin-top:.5rem}.hero-stat-chip{background:#ffffff08;border:1px solid var(--m-border);border-radius:10px;padding:.5rem .85rem;display:flex;flex-direction:column;align-items:center;gap:.15rem;min-width:65px;transition:all .2s ease}[data-theme=light] .hero-stat-chip{background:#00000008}.hero-stat-chip:hover{border-color:var(--m-border-hover);background:#ffffff0d}.chip-val{font-size:1.1rem;font-weight:700;font-family:var(--font-heading)}.chip-label{font-size:.65rem;color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em;font-weight:600}.streak-glow{color:#f97316}.easy-glow{color:var(--diff-easy)}.medium-glow{color:var(--diff-medium)}.hard-glow{color:var(--diff-hard)}.hero-actions{display:flex;align-items:center;gap:1rem;margin-top:.5rem;flex-wrap:wrap}.hero-continue-btn{background:var(--aurora);background-size:200% 100%;color:#fff;border:none;padding:.75rem 1.5rem;border-radius:var(--m-radius);font-weight:700;font-size:.9rem;cursor:pointer;display:flex;align-items:center;gap:.5rem;transition:all .3s ease;box-shadow:0 4px 20px #7c3aed59;animation:aurora-shift 4s linear infinite}.hero-continue-btn:hover{transform:translateY(-2px);box-shadow:0 8px 28px #7c3aed80}.hero-current-topic{font-size:.85rem;color:var(--text-muted);display:flex;align-items:center;gap:.35rem}.hero-current-topic ion-icon{color:var(--primary)}.hero-right{flex-shrink:0}.hero-ring-container{position:relative;width:160px;height:160px}.hero-ring-svg{display:block}.hero-ring-center{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;flex-direction:column;align-items:center;justify-content:center}.hero-ring-pct{font-size:2rem;font-weight:800;font-family:var(--font-heading);background:var(--aurora);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.hero-ring-label{font-size:.7rem;color:var(--text-muted);text-transform:uppercase;letter-spacing:.1em;font-weight:600}.hero-progress-bar{position:relative;z-index:1;margin-top:2rem;height:5px;background:#ffffff0f;border-radius:3px;overflow:hidden}[data-theme=light] .hero-progress-bar{background:#0000000f}.hero-progress-fill{height:100%;background:var(--aurora);background-size:300% 100%;animation:aurora-shift 6s linear infinite;border-radius:3px;transition:width .8s cubic-bezier(.16,1,.3,1)}.mastery-toolbar{display:flex;align-items:center;justify-content:space-between;gap:1rem;background:var(--m-glass);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);border:1px solid var(--m-border);border-radius:var(--m-radius);padding:.75rem 1.25rem;box-shadow:var(--m-shadow);flex-wrap:wrap;position:sticky;top:5rem;z-index:50}.toolbar-left{flex:1;min-width:200px}.toolbar-search{position:relative}.toolbar-search-icon{position:absolute;left:.85rem;top:50%;transform:translateY(-50%);color:var(--text-muted);font-size:1.1rem}.toolbar-search-input{width:100%;background:#ffffff08;border:1px solid var(--m-border);border-radius:10px;padding:.6rem 1rem .6rem 2.5rem;color:var(--text-main);font-size:.88rem;transition:all .25s ease}[data-theme=light] .toolbar-search-input{background:#00000008}.toolbar-search-input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px #8b5cf626}.toolbar-right{display:flex;align-items:center;gap:.75rem}.toolbar-pills{display:flex;gap:.35rem}.toolbar-pill{background:#ffffff08;border:1px solid var(--m-border);border-radius:8px;padding:.45rem .85rem;font-size:.8rem;font-weight:600;color:var(--text-muted);cursor:pointer;transition:all .2s ease}[data-theme=light] .toolbar-pill{background:#00000008}.toolbar-pill:hover{color:var(--text-main);border-color:var(--m-border-hover)}.toolbar-pill.active{background:var(--primary);border-color:var(--primary);color:#fff}.toolbar-pill.active.easy{background:var(--diff-easy);border-color:var(--diff-easy)}.toolbar-pill.active.medium{background:var(--diff-medium);border-color:var(--diff-medium)}.toolbar-pill.active.hard{background:var(--diff-hard);border-color:var(--diff-hard)}.toolbar-topic-select{background:#ffffff08;border:1px solid var(--m-border);border-radius:8px;padding:.45rem .75rem;color:var(--text-main);font-size:.8rem;cursor:pointer;transition:border-color .2s}[data-theme=light] .toolbar-topic-select{background:#00000008}.toolbar-topic-select:focus{outline:none;border-color:var(--primary)}.mastery-feed{display:flex;flex-direction:column;gap:1rem}.mastery-empty-state{text-align:center;padding:4rem 2rem;color:var(--text-muted)}.mastery-empty-state h3{margin-top:1rem;font-size:1.2rem}.mastery-empty-state p{font-size:.9rem;margin-top:.4rem}.tc{position:relative;background:var(--m-glass);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border:1px solid var(--m-border);border-radius:var(--m-radius-lg);padding:0;overflow:hidden;box-shadow:var(--m-shadow);transition:all .3s ease}.tc:hover{border-color:var(--m-border-hover);box-shadow:var(--m-shadow-lg);transform:translateY(-1px)}.tc-expanded{box-shadow:var(--m-shadow-lg)}.tc-accent-bar{position:absolute;left:0;top:0;bottom:0;width:4px;border-radius:4px 0 0 4px;transition:width .3s ease}.tc:hover .tc-accent-bar,.tc-expanded .tc-accent-bar{width:5px}.tc-header{display:flex;align-items:center;gap:1rem;padding:1.5rem 1.75rem .75rem 2rem;cursor:pointer;transition:background .2s}.tc-header:hover{background:#ffffff04}.tc-icon{width:48px;height:48px;border-radius:14px;display:flex;align-items:center;justify-content:center;font-size:1.5rem;flex-shrink:0;border:1px solid var(--m-border);transition:transform .3s ease}.tc:hover .tc-icon{transform:scale(1.05)}.tc-meta{flex:1;min-width:0}.tc-title-row{display:flex;align-items:center;gap:.6rem;flex-wrap:wrap}.tc-title{font-family:var(--font-heading);font-size:1.15rem;font-weight:700;margin:0}.tc-tier{font-size:.65rem;font-weight:700;padding:.15rem .5rem;border-radius:6px;border:1px solid;text-transform:uppercase;letter-spacing:.06em}.tc-desc{font-size:.82rem;color:var(--text-muted);margin:.2rem 0 0;line-height:1.4}.tc-stats-block{display:flex;align-items:center;gap:1rem;flex-shrink:0}.tc-ring-mini{position:relative;width:44px;height:44px}.tc-ring-mini svg{display:block}.tc-ring-pct{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;align-items:center;justify-content:center;font-size:.65rem;font-weight:700}.tc-count{text-align:center}.tc-count-val{font-weight:700;font-size:1.1rem;font-family:var(--font-heading)}.tc-count-sep{color:var(--text-muted);margin:0 .1rem}.tc-count-total{color:var(--text-muted);font-size:.9rem}.tc-resume-btn{background:transparent;border:1px solid var(--m-border);border-radius:8px;padding:.3rem .65rem;font-size:.75rem;font-weight:600;color:var(--primary);cursor:pointer;display:flex;align-items:center;gap:.25rem;transition:all .2s}.tc-resume-btn:hover{background:#8b5cf61a;border-color:var(--primary)}.tc-chevron{font-size:1.2rem;color:var(--text-muted);transition:transform .3s ease}.tc-expanded .tc-chevron{transform:rotate(180deg)}.tc-progress{padding:0 1.75rem .75rem 2rem}.tc-progress-track{height:4px;background:#ffffff0d;border-radius:2px;overflow:hidden}[data-theme=light] .tc-progress-track{background:#0000000f}.tc-progress-fill{height:100%;border-radius:2px;transition:width .6s cubic-bezier(.16,1,.3,1);position:relative}.tc-progress-fill:after{content:"";position:absolute;right:0;top:-2px;width:8px;height:8px;border-radius:50%;background:inherit;box-shadow:0 0 8px currentColor;opacity:.7}.tc-body{border-top:1px solid var(--m-border);padding:1.25rem 1.75rem 1.5rem 2rem;display:flex;flex-direction:column;gap:1.5rem;overflow:hidden}.tc-subtopic{display:flex;flex-direction:column;gap:.75rem}.tc-subtopic-title{font-size:.82rem;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:var(--text-muted);display:flex;align-items:center;gap:.5rem;margin:0}.tc-subtopic-dot{width:6px;height:6px;border-radius:50%;flex-shrink:0}.tc-subtopic-count{font-size:.7rem;font-weight:500;background:#ffffff0a;border:1px solid var(--m-border);border-radius:4px;padding:.05rem .35rem;color:var(--text-muted)}.tc-problems-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:.6rem}.pc{position:relative;background:#ffffff05;border:1px solid var(--m-border);border-radius:12px;padding:.75rem .85rem .6rem 1.25rem;display:flex;flex-direction:column;gap:.5rem;transition:all .2s ease;overflow:hidden}[data-theme=light] .pc{background:#fff9}.pc:hover{background:#ffffff0a;border-color:var(--m-border-hover);transform:translateY(-1px);box-shadow:0 4px 16px #00000026}[data-theme=light] .pc:hover{background:#fffffff2}.pc-solved{background:#10b9810a;border-color:#10b98126}.pc-solved:hover{background:#10b9810f}.pc-diff-stripe{position:absolute;left:0;top:0;bottom:0;width:3px;border-radius:3px 0 0 3px}.pc-stripe-easy{background:var(--diff-easy)}.pc-stripe-medium{background:var(--diff-medium)}.pc-stripe-hard{background:var(--diff-hard)}.pc-top{display:flex;align-items:flex-start;gap:.6rem}.pc-check{width:20px;height:20px;border-radius:6px;border:1.5px solid var(--m-border-hover);background:transparent;display:flex;align-items:center;justify-content:center;cursor:pointer;flex-shrink:0;margin-top:2px;color:#fff;transition:all .25s ease}.pc-check:hover{border-color:var(--primary);background:#8b5cf61a}.pc-check-done{background:var(--diff-easy);border-color:var(--diff-easy);box-shadow:0 0 10px #10b9814d}.pc-info{flex:1;min-width:0;display:flex;flex-direction:column;gap:.3rem}.pc-name{font-size:.85rem;font-weight:500;color:var(--text-main);line-height:1.3;transition:color .2s}.pc-solved .pc-name{text-decoration:line-through;color:var(--text-muted)}.pc-tags{display:flex;align-items:center;gap:.35rem;flex-wrap:wrap}.pc-diff-badge{font-size:.6rem;font-weight:700;padding:.1rem .4rem;border-radius:4px;text-transform:uppercase;letter-spacing:.03em}.pc-diff-easy{background:#10b9811f;color:var(--diff-easy)}.pc-diff-medium{background:#f59e0b1f;color:var(--diff-medium)}.pc-diff-hard{background:#ef44441f;color:var(--diff-hard)}.pc-company{font-size:.6rem;font-weight:500;background:#ffffff0a;border:1px solid rgba(255,255,255,.04);padding:.08rem .35rem;border-radius:3px;color:var(--text-muted)}[data-theme=light] .pc-company{background:#0000000a}.pc-star{background:none;border:none;cursor:pointer;color:var(--text-muted);font-size:1rem;padding:0;flex-shrink:0;transition:all .2s;display:flex}.pc-star:hover,.pc-star-active{color:#fbbf24}.pc-actions{display:flex;align-items:center;gap:.35rem;flex-wrap:wrap}.pc-link{font-size:.7rem;font-weight:600;padding:.25rem .5rem;border-radius:6px;text-decoration:none;display:flex;align-items:center;gap:.25rem;transition:all .2s;border:1px solid transparent;background:none;cursor:pointer;color:var(--text-muted)}.pc-link:hover{background:#ffffff0f;color:var(--text-main)}.pc-lc{color:#ffa116;border-color:#ffa1161f}.pc-lc:hover{background:#ffa1161f;color:#ffa116}.pc-gfg{color:#2f8d46;border-color:#2f8d461f}.pc-gfg:hover{background:#2f8d461f;color:#2f8d46}.pc-cf{color:#3b82f6;border-color:#3b82f61f}.pc-cf:hover{background:#3b82f61f;color:#3b82f6}.pc-vid{color:#ef4444;border-color:#ef444414}.pc-vid:hover{background:#ef44441a;color:#ef4444}.pc-notes{color:var(--text-muted);border-color:var(--m-border)}.pc-notes-active{color:var(--diff-easy);border-color:#10b98126;background:#10b9810f}.notes-overlay{position:fixed;top:0;right:0;bottom:0;left:0;z-index:10000;background:#0009;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);display:flex;align-items:center;justify-content:center;padding:2rem}.notes-modal{background:var(--m-glass);-webkit-backdrop-filter:blur(24px);backdrop-filter:blur(24px);border:1px solid var(--m-border);border-radius:var(--m-radius-lg);padding:2rem;width:100%;max-width:520px;box-shadow:var(--m-shadow-lg);display:flex;flex-direction:column;gap:1.25rem}.notes-modal-head{display:flex;justify-content:space-between;align-items:flex-start}.notes-modal-h3{font-family:var(--font-heading);font-size:1.2rem;font-weight:700;margin:0}.notes-modal-sub{font-size:.8rem;color:var(--text-muted);margin:.2rem 0 0}.notes-close-btn{background:transparent;border:1px solid var(--m-border);border-radius:8px;width:32px;height:32px;display:flex;align-items:center;justify-content:center;cursor:pointer;color:var(--text-muted);transition:all .2s}.notes-close-btn:hover{color:var(--text-main);border-color:var(--m-border-hover)}.notes-textarea{width:100%;min-height:160px;background:#ffffff08;border:1px solid var(--m-border);border-radius:12px;padding:1rem;color:var(--text-main);font-size:.9rem;font-family:var(--font-mono, "JetBrains Mono", monospace);line-height:1.6;resize:vertical;transition:border-color .2s}.notes-textarea:focus{outline:none;border-color:var(--primary)}.notes-modal-foot{display:flex;justify-content:flex-end;gap:.75rem}.notes-btn{padding:.6rem 1.2rem;border-radius:10px;font-weight:600;font-size:.85rem;cursor:pointer;transition:all .2s}.notes-btn.cancel{background:transparent;border:1px solid var(--m-border);color:var(--text-muted)}.notes-btn.cancel:hover{border-color:var(--m-border-hover);color:var(--text-main)}.notes-btn.save{background:var(--primary);border:none;color:#fff;box-shadow:0 4px 12px #8b5cf64d}.notes-btn.save:hover{transform:translateY(-1px);box-shadow:0 6px 18px #8b5cf673}@media (max-width: 768px){.mastery-hero-content{flex-direction:column;text-align:center}.hero-left{align-items:center}.hero-stats-row,.hero-actions{justify-content:center}.hero-ring-container,.hero-ring-svg{width:120px;height:120px}.hero-ring-pct{font-size:1.5rem}.hero-title{font-size:1.6rem}.tc-header{flex-wrap:wrap}.tc-stats-block{flex-wrap:wrap;gap:.6rem}.tc-problems-grid{grid-template-columns:1fr}.mastery-toolbar{flex-direction:column;align-items:stretch}.toolbar-right{flex-wrap:wrap}.sticky-bar-inner{flex-direction:column;gap:.5rem;padding:.5rem 1rem}.sticky-bar-right{max-width:100%}}@media (max-width: 480px){.mastery-container{padding:0 .75rem 4rem}.mastery-hero{padding:1.5rem 1rem}.hero-stats-row{gap:.4rem}.hero-stat-chip{padding:.35rem .6rem}.tc-header{padding:1rem 1rem .5rem}.tc-body{padding:1rem 1rem 1.25rem}.tc-progress{padding:0 1rem .5rem}}@media (max-width: 360px){.mastery-hero{padding:1.25rem .75rem}.hero-title{font-size:1.35rem}.hero-stats-row{flex-wrap:wrap}.hero-stat-chip{flex:1 1 45%;text-align:center}.sticky-bar-inner{padding:.4rem .6rem}.sticky-bar-left{gap:.4rem;flex-wrap:wrap}.sticky-bar-search{width:100%}.pc-actions{flex-wrap:wrap;gap:.35rem}.notes-overlay{padding:.75rem}.notes-modal{padding:1.25rem 1rem}}@media (max-width: 320px){.mastery-container{padding:0 .5rem 3rem}.hero-title{font-size:1.2rem}.tc-meta{max-width:100%;overflow-wrap:anywhere}.pc-name{overflow-wrap:anywhere;word-break:break-word}}@media (prefers-reduced-motion: reduce){.orb-1,.orb-2,.orb-3,.sticky-bar-progress-fill,.hero-progress-fill{animation:none!important}*,:before,:after{transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}.gradient-text{background:var(--aurora);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}:root{--bg-main: #030307;--bg-card: rgba(13, 13, 22, .55);--bg-card-hover: rgba(20, 20, 32, .7);--glass-bg: rgba(9, 9, 15, .65);--glass-border: rgba(255, 255, 255, .08);--glass-border-hover: rgba(255, 255, 255, .16);--primary: #8b5cf6;--primary-glow: rgba(139, 92, 246, .35);--accent: #f43f5e;--accent-glow: rgba(244, 63, 94, .3);--success: #10b981;--text-main: #f8fafc;--text-muted: #94a3b8;--text-inverse: #030307;--font-heading: "Outfit", system-ui, sans-serif;--font-main: "Inter", system-ui, sans-serif;--font-mono: "JetBrains Mono", monospace;--color-leetcode: #ffa116;--color-codeforces: #3b82f6;--color-codechef: #b88955;--color-atcoder: #9ca3af;--color-gfg: #2f8d46;--color-easy: #10b981;--color-medium: #ffa116;--color-hard: #ef4444}[data-theme=light]{--bg-main: #f8fafc;--bg-card: rgba(255, 255, 255, .75);--bg-card-hover: rgba(255, 255, 255, .95);--glass-bg: rgba(248, 250, 252, .85);--glass-border: rgba(0, 0, 0, .08);--glass-border-hover: rgba(0, 0, 0, .15);--primary: #6d28d9;--primary-glow: rgba(109, 40, 217, .15);--accent: #e11d48;--text-main: #0f172a;--text-muted: #475569;--text-inverse: #ffffff}[data-theme=light] .mastery-command{background:#fff;box-shadow:0 4px 28px #0f172a12;border-color:#0000000f}[data-theme=light] .mastery-stat-card{background:#f8fafc;border-color:#0000000f}[data-theme=light] .mastery-stat-track{background:#0000000f}[data-theme=light] .mastery-ring-bg{stroke:#00000014}[data-theme=light] .mastery-search-input,[data-theme=light] .mastery-topic-select{background:#f1f5f9;border-color:#00000014}[data-theme=light] .mastery-pill{background:#fff;border-color:#0000001a;color:var(--text-muted)}[data-theme=light] .mastery-pill:hover{background:#f8fafc;border-color:#6d28d940}[data-theme=light] .footer-shell{background:#fff;box-shadow:0 -8px 40px #0f172a0f;border-color:#0000000f}[data-theme=light] .live-clock{background:#f1f5f9;border-color:#00000014}[data-theme=light] .footer-socials a{background:#f8fafc}[data-theme=light] .v5-item-row{background:#fff;border-color:#00000012}[data-theme=light] .v5-item-row:hover{background:#f8fafc;border-color:#6d28d933}[data-theme=light] ::-webkit-scrollbar-thumb{background:#00000026}*{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}body{background-color:var(--bg-main);color:var(--text-main);font-family:var(--font-main);min-height:100vh;overflow-x:hidden;position:relative;-webkit-font-smoothing:antialiased;transition:background-color .4s ease,color .4s ease}::-webkit-scrollbar{width:8px}::-webkit-scrollbar-track{background:var(--bg-main)}::-webkit-scrollbar-thumb{background:#ffffff1a;border-radius:4px}::-webkit-scrollbar-thumb:hover{background:var(--primary)}.scroll-progress-bar{position:fixed;top:0;left:0;width:0%;height:3px;background:linear-gradient(90deg,var(--primary),var(--accent));z-index:10000;pointer-events:none}.bg-layer-system{position:fixed;top:0;right:0;bottom:0;left:0;z-index:-100;pointer-events:none;overflow:hidden}.blob{position:absolute;border-radius:50%;filter:blur(140px);opacity:.12;animation:drift 25s infinite alternate ease-in-out}[data-theme=light] .blob{opacity:.06}.blob-1{top:-10%;left:-10%;width:50vw;height:50vw;background:var(--primary)}.blob-2{bottom:-15%;right:-10%;width:60vw;height:60vw;background:var(--accent);animation-delay:-5s}.blob-3{top:40%;left:50%;width:40vw;height:40vw;background:#4f46e5;animation-delay:-10s}@keyframes drift{0%{transform:translate(0) scale(1) rotate(0)}to{transform:translate(8%,8%) scale(1.15) rotate(360deg)}}.mouse-ambient-glow{position:fixed;width:500px;height:500px;background:radial-gradient(circle,#8b5cf612,#8b5cf600 70%);border-radius:50%;pointer-events:none;z-index:-90;opacity:0;transition:opacity .5s ease}.dot-matrix-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background-image:radial-gradient(var(--glass-border) 1px,transparent 1px);background-size:24px 24px;z-index:-80;opacity:.8}.particles-canvas{position:fixed;top:0;right:0;bottom:0;left:0;z-index:-75}.app-container{max-width:1200px;margin:0 auto;padding:0 1.5rem}main{padding-bottom:8rem}h1,h2,h3,h4,h5,h6{font-family:var(--font-heading);letter-spacing:-.02em;font-weight:700}p{color:var(--text-muted)}.gradient-text{background:linear-gradient(135deg,var(--primary) 30%,var(--accent));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}header{position:sticky;top:1.5rem;z-index:1000;margin-bottom:4rem}.nav-container{background:var(--glass-bg);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border:1px solid var(--glass-border);border-radius:20px;padding:.75rem 1.5rem;display:flex;justify-content:space-between;align-items:center;box-shadow:0 10px 30px #00000040;transition:border-color .3s,box-shadow .3s}.nav-container:hover{border-color:#ffffff26}.brand{font-size:1.4rem;font-family:var(--font-heading);font-weight:800;display:flex;align-items:center;gap:.5rem;color:var(--text-main);text-decoration:none}.brand ion-icon{color:var(--primary);font-size:1.6rem}.sync-indicator{margin-left:.5rem;display:flex;align-items:center}.sync-dot{width:8px;height:8px;background:var(--primary);border-radius:50%;box-shadow:0 0 10px var(--primary);animation:blink-pulse 2s infinite}@keyframes blink-pulse{0%{transform:scale(1);opacity:1}50%{transform:scale(1.3);opacity:.3}to{transform:scale(1);opacity:1}}.nav-links{display:flex;align-items:center;gap:1.5rem}.nav-item{font-family:var(--font-heading);font-weight:600;color:var(--text-muted);text-decoration:none;font-size:.95rem;padding:.5rem 1rem;border-radius:10px;display:flex;align-items:center;gap:.5rem;transition:all .25s ease;position:relative}.nav-item:hover{color:var(--text-main)}.nav-item.active{color:var(--primary);background:#8b5cf614}.nav-actions{display:flex;align-items:center;gap:.75rem;border-left:1px solid var(--glass-border);padding-left:1rem;margin-left:.5rem}.hamburger-btn{display:none;background:none;border:none;color:var(--text-main);font-size:1.8rem;cursor:pointer}.hero{text-align:center;margin:5rem 0 6rem;display:flex;flex-direction:column;align-items:center;gap:1.5rem;position:relative}.hero h1{font-size:clamp(3rem,7vw,5rem);font-weight:900;line-height:1.05;letter-spacing:-.04em;max-width:900px}.hero p{font-size:1.25rem;max-width:650px;line-height:1.6}.hero-stats{display:flex;gap:3rem;margin-top:2rem;padding:1.2rem 3rem;background:var(--bg-card);border:1px solid var(--glass-border);border-radius:20px;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.hero-stat-item{display:flex;flex-direction:column;align-items:center}.hero-stat-num{font-family:var(--font-heading);font-size:2rem;font-weight:800;color:var(--primary)}.hero-stat-lbl{font-size:.75rem;font-weight:700;color:var(--text-muted);letter-spacing:.1em;text-transform:uppercase}.filters{display:flex;justify-content:space-between;align-items:center;gap:1.5rem;margin-bottom:3rem;padding:1rem 1.5rem;background:var(--bg-card);border:1px solid var(--glass-border);border-radius:20px;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}.filter-chips-group{display:flex;gap:.5rem}.filter-chip{background:#ffffff08;border:1px solid var(--glass-border);color:var(--text-muted);padding:.5rem 1.2rem;border-radius:12px;font-size:.85rem;font-weight:600;cursor:pointer;transition:all .25s cubic-bezier(.4,0,.2,1)}.filter-chip:hover{color:var(--text-main);border-color:var(--glass-border-hover)}.filter-chip.active{background:var(--primary);color:var(--text-inverse);border-color:var(--primary);box-shadow:0 0 15px var(--primary-glow)}.search-wrapper{position:relative;flex:1;max-width:350px}.search-wrapper ion-icon{position:absolute;left:1rem;top:50%;transform:translateY(-50%);color:var(--text-muted);font-size:1.2rem}.search-input{width:100%;background:#00000040;border:1px solid var(--glass-border);border-radius:12px;padding:.6rem 1rem .6rem 2.8rem;color:var(--text-main);font-family:inherit;font-size:.9rem;outline:none;transition:all .3s}.search-input:focus{border-color:var(--primary);box-shadow:0 0 15px #8b5cf626}.view-toggle{display:flex;gap:.25rem;background:#00000040;padding:.25rem;border-radius:12px;border:1px solid var(--glass-border)}.toggle-btn{background:transparent;border:none;color:var(--text-muted);padding:.4rem .8rem;border-radius:8px;cursor:pointer;font-size:1.1rem;display:flex;align-items:center;transition:all .25s}.toggle-btn.active{background:var(--primary);color:var(--text-inverse)}.stat-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:1.5rem;margin-bottom:3rem}.stat-card{background:var(--bg-card);border:1px solid var(--glass-border);border-radius:20px;padding:1.5rem;position:relative;overflow:hidden;transition:border-color .3s,box-shadow .3s,transform .3s;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.stat-card:hover{border-color:#8b5cf640;transform:translateY(-2px);box-shadow:0 15px 30px #00000026}.stat-card-inner{position:relative;z-index:2;display:flex;flex-direction:column;justify-content:space-between;height:100%;min-height:110px}.card-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:1rem}.live-status-tag{font-size:.7rem;font-weight:800;letter-spacing:.08em;background:#10b9811a;color:var(--success);padding:.25rem .6rem;border-radius:100px;display:flex;align-items:center;gap:.4rem}.stat-icon-new{color:var(--text-muted);font-size:1.4rem;display:flex}.stat-value-big{font-family:var(--font-heading);font-size:2.8rem;font-weight:800;line-height:1;color:var(--text-main)}.stat-label-new{font-size:.72rem;font-weight:800;color:var(--text-muted);letter-spacing:.05em;margin-top:.4rem}.card-bg-icon{position:absolute;right:-1rem;bottom:-1rem;font-size:6rem;opacity:.02;color:var(--text-main);pointer-events:none;z-index:1}.mini-hall-of-fame{display:flex;flex-direction:column;gap:.4rem}.hall-item{display:flex;align-items:center;gap:.5rem;font-size:.8rem}.hall-dot{width:6px;height:6px;border-radius:50%}.hall-name{color:var(--text-muted);font-weight:500;text-overflow:ellipsis;overflow:hidden;white-space:nowrap}.next-platform-row{display:flex;align-items:center;gap:.4rem;font-size:.85rem;font-weight:700;color:var(--text-muted)}.next-countdown{font-family:var(--font-heading);font-size:1.6rem;font-weight:800;color:var(--accent);margin-top:.2rem}.card-live.is-live{border-color:#10b98166;box-shadow:0 0 25px #10b9811a}.card-live.is-live .stat-value-big{color:var(--success)}.split-layout{display:grid;grid-template-columns:2fr 1fr;gap:2rem}.section-title{font-family:var(--font-heading);font-size:1.8rem;font-weight:800;margin-bottom:1.5rem;display:flex;align-items:center;gap:.5rem}.upcoming-side{display:flex;flex-direction:column;gap:2rem}.ended-side{display:flex;flex-direction:column}.contest-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:1.25rem}.ended-grid{grid-template-columns:1fr;gap:1rem}.contest-card{background:var(--bg-card);border:1px solid var(--glass-border);border-radius:20px;padding:1.5rem;position:relative;overflow:hidden;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);display:flex;flex-direction:column;justify-content:space-between;min-height:200px;transition:all .3s cubic-bezier(.4,0,.2,1)}.contest-card:before{content:"";position:absolute;top:0;left:0;height:100%;width:4px;background:var(--glass-border);transition:background .3s}.contest-card:hover{transform:translateY(-5px) scale(1.01);border-color:#ffffff26}.contest-card.leetcode:hover:before{background:var(--color-leetcode)}.contest-card.codeforces:hover:before{background:var(--color-codeforces)}.contest-card.codechef:hover:before{background:var(--color-codechef)}.contest-card.atcoder:hover:before{background:var(--color-atcoder)}.contest-card.leetcode:hover{box-shadow:0 10px 30px #faa1161a}.contest-card.codeforces:hover{box-shadow:0 10px 30px #3b82f61a}.contest-card.codechef:hover{box-shadow:0 10px 30px #b889551a}.header-main{display:flex;align-items:center;gap:.5rem}.platform-badge{font-size:.65rem;font-weight:800;letter-spacing:.05em;padding:.25rem .6rem;border-radius:6px;text-transform:uppercase}.platform-badge.leetcode{background:#faa1161a;color:var(--color-leetcode)}.platform-badge.codeforces{background:#3b82f61a;color:var(--color-codeforces)}.platform-badge.codechef{background:#b889551a;color:var(--color-codechef)}.platform-badge.atcoder{background:#9ca3af1a;color:var(--color-atcoder)}.difficulty-tag{font-size:.65rem;font-weight:800;padding:.25rem .5rem;border-radius:6px;text-transform:uppercase}.difficulty-easy{background:#10b9811a;color:var(--color-easy)}.difficulty-medium{background:#f59e0b1a;color:var(--color-medium)}.difficulty-hard{background:#ef44441a;color:var(--color-hard)}.countdown{font-family:var(--font-mono);font-size:.75rem;font-weight:700;letter-spacing:-.02em}.countdown.status-live{color:var(--success)}.countdown.status-soon{color:var(--accent)}.countdown.status-upcoming{color:var(--text-muted)}.contest-name{font-family:var(--font-heading);font-size:1.15rem;font-weight:700;line-height:1.35;margin:1rem 0;color:var(--text-main);overflow:hidden;text-overflow:ellipsis;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}.contest-time,.end-time{display:flex;align-items:center;gap:.4rem;font-size:.8rem;color:var(--text-muted);margin-bottom:.4rem}.join-btn-placeholder{margin-top:1rem}.join-btn{width:100%;background:#ffffff05;border:1px solid var(--glass-border);color:var(--text-main);padding:.5rem;border-radius:10px;font-size:.8rem;font-weight:700;display:flex;align-items:center;justify-content:center;gap:.4rem;cursor:pointer;transition:all .25s}.join-btn:hover{background:var(--primary);border-color:var(--primary);color:var(--text-inverse);box-shadow:0 0 15px var(--primary-glow)}.no-contests{padding:2rem;text-align:center;color:var(--text-muted);background:var(--bg-card);border:1px solid var(--glass-border);border-radius:20px}.calendar-container{background:var(--bg-card);border:1px solid var(--glass-border);border-radius:24px;padding:1.5rem;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.calendar-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:1.5rem}.calendar-header h2{font-family:var(--font-heading);font-size:1.4rem;font-weight:800}.calendar-weekdays{display:grid;grid-template-columns:repeat(7,1fr);gap:.75rem;margin-bottom:.75rem}.weekday{text-align:center;padding:.5rem;color:var(--text-muted);font-weight:700;font-size:.8rem;text-transform:uppercase;letter-spacing:.1em}.calendar-grid{display:grid;grid-template-columns:repeat(7,1fr);gap:.75rem}.calendar-day{min-height:110px;background:#ffffff03;border:1px solid var(--glass-border);border-radius:14px;padding:.5rem;position:relative;display:flex;flex-direction:column;transition:all .25s ease}.calendar-day:not(.empty):hover{border-color:#8b5cf64d;background:#8b5cf608}.calendar-day.past-day{opacity:.55}.day-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:.4rem}.day-number{font-family:var(--font-heading);font-size:.85rem;font-weight:700;color:var(--text-muted)}.contest-count-badge{background:var(--primary);color:var(--text-inverse);font-size:.65rem;font-weight:800;padding:1px 5px;border-radius:100px}.simple-contest-list{display:flex;flex-direction:column;gap:.25rem;flex:1}.simple-marker{display:flex;align-items:center;gap:.25rem;font-size:.65rem;font-weight:700;padding:.2rem .4rem;border-radius:4px;background:#ffffff05;white-space:nowrap;overflow:hidden}.simple-marker .dot{width:5px;height:5px;border-radius:50%;background:currentColor;flex-shrink:0}.simple-marker .name{overflow:hidden;text-overflow:ellipsis}.simple-marker.marker-leetcode{color:var(--color-leetcode);background:#faa11614}.simple-marker.marker-codeforces{color:var(--color-codeforces);background:#3b82f614}.simple-marker.marker-codechef{color:var(--color-codechef);background:#b8895514}.simple-marker.marker-atcoder{color:var(--color-atcoder);background:#9ca3af14}.more-indicator{font-size:.65rem;font-weight:800;color:var(--text-muted);text-align:center;padding-top:.2rem}.day-info-mini{position:absolute;bottom:calc(100% + 10px);left:50%;transform:translate(-50%) translateY(10px);background:#09090ff2;border:1px solid var(--glass-border);border-radius:16px;padding:.75rem 1rem;width:240px;z-index:100;box-shadow:0 15px 40px #00000080;-webkit-backdrop-filter:blur(15px);backdrop-filter:blur(15px);pointer-events:none;opacity:0;visibility:hidden;transition:all .3s cubic-bezier(.19,1,.22,1)}.calendar-day:hover .day-info-mini{opacity:1;visibility:visible;transform:translate(-50%) translateY(0)}.mini-header{font-size:.7rem;font-weight:800;text-transform:uppercase;letter-spacing:.08em;color:var(--primary);border-bottom:1px solid var(--glass-border);padding-bottom:.4rem;margin-bottom:.5rem}.mini-list{display:flex;flex-direction:column;gap:.4rem}.mini-item{display:flex;align-items:center;gap:.4rem;text-decoration:none;font-size:.75rem;color:var(--text-main);font-weight:600}.mini-item .indicator{width:6px;height:6px;border-radius:50%;background:var(--text-muted)}.mini-item .indicator-leetcode{background:var(--color-leetcode)}.mini-item .indicator-codeforces{background:var(--color-codeforces)}.mini-item .indicator-codechef{background:var(--color-codechef)}.mini-item .indicator-atcoder{background:var(--color-atcoder)}.mini-item:hover{color:var(--primary)}.flux-section{margin:6rem 0}.flux-header{display:flex;justify-content:space-between;align-items:flex-end;margin-bottom:2rem}.flux-subtitle{color:var(--text-muted);font-size:.95rem;margin-top:.3rem}.flux-indicator{display:flex;align-items:center;gap:.4rem;font-size:.75rem;font-weight:800;letter-spacing:.1em;color:var(--primary)}.pulse-dot{width:6px;height:6px;background:var(--primary);border-radius:50%;box-shadow:0 0 8px var(--primary);animation:blink-pulse 1.5s infinite}.flux-viewport{position:relative;background:#0d0d1659;border:1px solid var(--glass-border);border-radius:24px;padding:2rem 0;overflow:hidden;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}.flux-stream{display:flex;gap:1.5rem;width:max-content;animation:flux-scroll 45s linear infinite}.flux-stream:hover{animation-play-state:paused}@keyframes flux-scroll{0%{transform:translate(0)}to{transform:translate(-50%)}}.flux-node{background:var(--bg-card);border:1px solid var(--glass-border);border-radius:16px;padding:1rem 1.25rem;display:flex;align-items:center;gap:1rem;min-width:250px;position:relative;cursor:pointer;transition:all .3s}.flux-node:hover{border-color:var(--primary);transform:translateY(-3px)}.node-glow{position:absolute;top:0;right:0;bottom:0;left:0;background:radial-gradient(circle at center,rgba(139,92,246,.05) 0%,transparent 70%);border-radius:16px;opacity:0;transition:opacity .3s}.flux-node:hover .node-glow{opacity:1}.node-content{display:flex;align-items:center;gap:1rem;z-index:2}.node-date{display:flex;flex-direction:column;align-items:center;background:#ffffff08;border:1px solid var(--glass-border);border-radius:10px;padding:.4rem .6rem;min-width:44px}.n-day{font-family:var(--font-heading);font-size:1.1rem;font-weight:800}.n-month{font-size:.65rem;font-weight:800;text-transform:uppercase;color:var(--text-muted)}.node-info{display:flex;flex-direction:column}.n-platform{font-size:.65rem;font-weight:800;letter-spacing:.05em;color:var(--primary);text-transform:uppercase}.n-name{font-size:.85rem;font-weight:700;color:var(--text-main);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:150px}.flux-background-grid{position:absolute;top:0;right:0;bottom:0;left:0;background-image:linear-gradient(rgba(255,255,255,.01) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.01) 1px,transparent 1px);background-size:20px 20px;z-index:1}.zenith-nexus{margin:6rem 0}.zenith-mastery-hull{background:linear-gradient(135deg,#8b5cf60d,#f43f5e0d);border:1px solid var(--glass-border);border-radius:32px;padding:2.5rem;position:relative;overflow:hidden;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}.mastery-layout{display:grid;grid-template-columns:1.5fr 1px 1.5fr 1.2fr;align-items:center;gap:3rem;position:relative;z-index:2}.elite-badge-glow{background:#8b5cf61a;border:1px solid rgba(139,92,246,.25);border-radius:100px;padding:.25rem .75rem;display:inline-block;margin-bottom:1rem}.elite-text{font-size:.7rem;font-weight:800;letter-spacing:.1em;color:var(--primary)}.mastery-headline{font-family:var(--font-heading);font-size:2.2rem;font-weight:800;margin-bottom:.75rem;line-height:1.15}.mastery-summary{font-size:1rem;line-height:1.5}.mastery-divider{height:100%;width:1px;background:var(--glass-border)}.mastery-quote-mini{font-style:italic;color:var(--text-muted);font-size:1.1rem;line-height:1.6}.mastery-cta{display:flex;flex-direction:column;align-items:flex-end;gap:1.5rem}.metric-item{text-align:right}.metric-val{font-family:var(--font-heading);font-size:2.5rem;font-weight:800;line-height:1;color:var(--text-main);display:block}.metric-key{font-size:.7rem;font-weight:800;letter-spacing:.1em;color:var(--text-muted)}.mastery-launch-btn{background:var(--primary);border:none;color:var(--text-inverse);padding:.8rem 1.8rem;border-radius:12px;font-family:var(--font-heading);font-weight:700;font-size:.95rem;display:flex;align-items:center;gap:.5rem;cursor:pointer;box-shadow:0 10px 20px var(--primary-glow);transition:all .3s}.mastery-launch-btn:hover{transform:translateY(-3px);box-shadow:0 15px 25px var(--primary-glow);background:#9d73f7}.intensity-nexus{margin:6rem 0}.intensity-header-new{display:flex;justify-content:space-between;align-items:center;margin-bottom:2rem}.rec-banner{background:#f43f5e14;border:1px solid rgba(244,63,94,.15);padding:.6rem 1.2rem;border-radius:14px;display:flex;align-items:center;gap:.5rem;font-size:.85rem;font-weight:600;color:var(--accent)}.intensity-matrix{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:1.5rem}.matrix-cell{background:var(--bg-card);border:1px solid var(--glass-border);border-radius:24px;padding:1.5rem;position:relative;overflow:hidden;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}.cell-glow{position:absolute;top:0;right:0;bottom:0;left:0;background:radial-gradient(circle at center,var(--primary) 0%,transparent 80%);pointer-events:none;z-index:1}.cell-content{position:relative;z-index:2}.cell-label{font-family:var(--font-heading);font-size:1.25rem;font-weight:800;margin-bottom:1rem}.cell-grid{display:flex;gap:.35rem;margin-bottom:1.5rem}.grid-dot{width:14px;height:14px;border-radius:4px;background:var(--primary);transition:background .3s}.platform-leetcode .grid-dot{background:var(--color-leetcode)}.platform-codeforces .grid-dot{background:var(--color-codeforces)}.platform-codechef .grid-dot{background:var(--color-codechef)}.platform-atcoder .grid-dot{background:var(--color-atcoder)}.cell-stats{display:flex;flex-direction:column}.c-count{font-family:var(--font-heading);font-size:2rem;font-weight:800;line-height:1}.c-label{font-size:.65rem;font-weight:800;color:var(--text-muted);letter-spacing:.05em;margin-top:.2rem}.roadmap-v5-container{max-width:1000px;margin:0 auto;padding:1rem 24px 0}.simple-roadmap-header{background:linear-gradient(160deg,rgba(139,92,246,.08) 0%,var(--bg-card) 48%,rgba(244,63,94,.05) 100%);border:1px solid var(--glass-border);border-radius:24px;padding:2rem;margin-bottom:3rem;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);box-shadow:0 12px 40px #00000026;display:flex;flex-direction:column;gap:1.5rem}.simple-header-content{display:flex;flex-direction:column;gap:1.2rem}.simple-header-title-block{display:flex;flex-direction:column;gap:.4rem}.simple-roadmap-title{font-family:var(--font-heading);font-size:2rem;font-weight:800;color:var(--text-main);margin:0;letter-spacing:-.5px}.simple-roadmap-subtitle{font-size:.95rem;color:var(--text-muted);margin:0;font-weight:500}.simple-progress-bar-container{display:flex;align-items:center;gap:1.2rem;width:100%;margin-top:.4rem}.simple-progress-bar-track{flex:1;height:10px;background:#ffffff0f;border-radius:100px;overflow:hidden;border:1px solid rgba(255,255,255,.1);position:relative;box-shadow:inset 0 1px 2px #0003}.simple-progress-bar-fill{height:100%;background:linear-gradient(90deg,var(--primary),var(--accent));border-radius:100px;transition:width 1.2s cubic-bezier(.34,1.56,.64,1);box-shadow:0 0 20px #8b5cf659;position:relative}.simple-progress-bar-fill:after{content:"";position:absolute;top:-2px;right:-1px;width:18px;height:14px;background:radial-gradient(circle,rgba(255,255,255,.8) 0%,rgba(255,255,255,.4) 50%,transparent 100%);filter:blur(4px);opacity:.6}.simple-progress-percentage{font-family:var(--font-mono);font-weight:700;font-size:1.2rem;background:linear-gradient(135deg,var(--primary),var(--accent));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;min-width:3.5rem;text-align:right;white-space:nowrap}.simple-search-bar{display:flex;align-items:center;gap:.8rem;background:#ffffff0a;border:1px solid var(--glass-border);border-radius:16px;padding:.8rem 1.2rem;transition:all .3s ease;margin-top:.4rem}.simple-search-bar:focus-within{background:#ffffff14;border-color:#ffffff29;box-shadow:0 0 16px #8b5cf61a}.simple-search-bar ion-icon{font-size:1.2rem;color:var(--text-muted);pointer-events:none;flex-shrink:0}.simple-search-input{flex:1;background:transparent;border:none;color:var(--text-main);font-size:.95rem;font-family:var(--font-main);outline:none;padding:0;min-width:0}.simple-search-input::placeholder{color:var(--text-muted)}[data-theme=light] .simple-roadmap-header{background:linear-gradient(160deg,#6d28d90f,#fffc 48%,#e11d480a);border-color:#00000014}[data-theme=light] .simple-search-bar{background:#0000000a;border-color:#00000014}[data-theme=light] .simple-search-bar:focus-within{background:#0000000f;border-color:#0000001f}[data-theme=light] .simple-search-bar ion-icon{color:#666}[data-theme=light] .simple-search-input{color:#0f172a}[data-theme=light] .simple-search-input::placeholder{color:#94a3b8}@media (max-width: 768px){.simple-roadmap-title{font-size:1.5rem}.simple-roadmap-subtitle{font-size:.9rem}.simple-progress-bar-container{gap:.8rem}.simple-progress-percentage{font-size:1rem}}.mastery-command{background:linear-gradient(160deg,rgba(139,92,246,.08) 0%,var(--bg-card) 48%,rgba(244,63,94,.05) 100%);border:1px solid var(--glass-border);border-radius:28px;padding:2rem;margin-bottom:3.5rem;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);box-shadow:0 12px 40px #00000026;display:flex;flex-direction:column;gap:1.75rem}.mastery-command-top{display:flex;justify-content:space-between;align-items:center;gap:2rem}.mastery-eyebrow{display:inline-block;font-size:.7rem;font-weight:800;letter-spacing:.12em;text-transform:uppercase;color:var(--primary);background:#8b5cf61f;border:1px solid rgba(139,92,246,.25);padding:.3rem .75rem;border-radius:100px;margin-bottom:.75rem}.mastery-title{font-family:var(--font-heading);font-size:clamp(1.6rem,4vw,2rem);font-weight:800;letter-spacing:-.03em;margin-bottom:.4rem;line-height:1.15}.mastery-subtitle{font-size:.95rem;color:var(--text-muted);line-height:1.5}.mastery-ring{position:relative;width:120px;height:120px;flex-shrink:0}.mastery-ring-svg{width:100%;height:100%;transform:rotate(-90deg)}.mastery-ring-bg{fill:none;stroke:#ffffff0f;stroke-width:8}.mastery-ring-fill{fill:none;stroke:url(#masteryGradient);stroke-width:8;stroke-linecap:round;transition:stroke-dashoffset .8s cubic-bezier(.19,1,.22,1)}.mastery-ring-center{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;flex-direction:column;align-items:center;justify-content:center}.mastery-ring-pct{font-family:var(--font-heading);font-size:1.75rem;font-weight:800;color:var(--text-main);line-height:1}.mastery-ring-lbl{font-size:.65rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--text-muted);margin-top:.15rem}.mastery-command{transition:transform .28s ease,box-shadow .28s ease,background .28s ease}.mastery-command[style*="position: fixed"],.mastery-command[style*="position: sticky"]{z-index:1100;box-shadow:0 22px 48px #02061799}.mastery-ring{transition:transform .28s ease,box-shadow .28s ease}.mastery-overview-card{display:flex;flex-direction:column;gap:.8rem;min-width:220px;max-width:290px;padding:1.15rem 1.25rem;border-radius:20px;background:#ffffff0f;border:1px solid var(--glass-border);box-shadow:0 18px 45px #050a1414}.mastery-overview-label{font-size:.78rem;letter-spacing:.1em;text-transform:uppercase;color:var(--text-muted);font-weight:800}.mastery-overview-value{font-size:2rem;font-weight:900;color:var(--text-main);line-height:1}.mastery-overview-track{width:100%;height:8px;background:#ffffff14;border-radius:999px;overflow:hidden}.mastery-overview-fill{height:100%;width:0;background:linear-gradient(90deg,var(--primary),var(--accent));border-radius:999px;transition:width .7s cubic-bezier(.19,1,.22,1)}.mastery-overview-card .mastery-overview-fill{width:var(--overall-pct, 0%)}@media (max-width: 960px){.mastery-command-top{align-items:flex-start}}@media (max-width: 768px){.mastery-command-top{flex-direction:column;align-items:stretch}.mastery-overview-card{max-width:100%}}@media (min-width: 600px){.roadmap-v5-container{padding-right:120px}}@media (min-width: 1024px){.roadmap-v5-container{padding-right:120px}}.mastery-stats-grid{display:flex;flex-wrap:nowrap;gap:.75rem;overflow-x:auto;padding-bottom:.5rem;margin-bottom:.25rem;-webkit-overflow-scrolling:touch}.mastery-stats-grid::-webkit-scrollbar{height:8px}.mastery-stats-grid::-webkit-scrollbar-track{background:transparent}.mastery-stats-grid::-webkit-scrollbar-thumb{background:#ffffff2e;border-radius:999px}.mastery-stat-card{background:#ffffff05;border:1px solid var(--glass-border);border-radius:16px;padding:.95rem 1rem;transition:border-color .25s ease;min-width:220px;flex:0 0 220px}.mastery-stat-card:hover{border-color:var(--glass-border-hover)}.mastery-stat-head{display:flex;align-items:center;gap:.4rem;margin-bottom:.55rem}.mastery-stat-dot{width:7px;height:7px;border-radius:50%;flex-shrink:0}.mastery-stat-card.easy .mastery-stat-dot{background:var(--color-easy);box-shadow:0 0 8px #10b98166}.mastery-stat-card.medium .mastery-stat-dot{background:var(--color-medium);box-shadow:0 0 8px #ffa11666}.mastery-stat-card.hard .mastery-stat-dot{background:var(--color-hard);box-shadow:0 0 8px #ef444466}.mastery-stat-name{font-size:.76rem;font-weight:700;color:var(--text-muted);flex:1}.mastery-stat-count{font-family:var(--font-heading);font-size:1rem;font-weight:800}.mastery-stat-card.easy .mastery-stat-count{color:var(--color-easy)}.mastery-stat-card.medium .mastery-stat-count{color:var(--color-medium)}.mastery-stat-card.hard .mastery-stat-count{color:var(--color-hard)}.mastery-stat-total{font-size:.85rem;font-weight:600;color:var(--text-muted);opacity:.7}.mastery-stat-track{height:4px;background:#ffffff0a;border-radius:100px;overflow:hidden}.mastery-stat-fill{height:100%;border-radius:100px;transition:width .6s cubic-bezier(.19,1,.22,1)}.mastery-stat-card.easy .mastery-stat-fill{background:linear-gradient(90deg,var(--color-easy),rgba(16,185,129,.5))}.mastery-stat-card.medium .mastery-stat-fill{background:linear-gradient(90deg,var(--color-medium),rgba(255,161,22,.5))}.mastery-stat-card.hard .mastery-stat-fill{background:linear-gradient(90deg,var(--color-hard),rgba(239,68,68,.5))}.mastery-toolbar{display:flex;flex-direction:column;gap:1.25rem;padding-top:1.25rem;border-top:1px solid var(--glass-border)}.mastery-filters-grid{display:grid;grid-template-columns:1fr;gap:1rem}@media (min-width: 768px){.mastery-filters-grid{grid-template-columns:1fr 1fr}.mastery-toolbar-topic{grid-column:1 / -1}}@media (min-width: 960px){.mastery-filters-grid{grid-template-columns:1.2fr 1.2fr 200px}.mastery-toolbar-topic{grid-column:auto}}.mastery-toolbar-search{position:relative}.mastery-toolbar-search ion-icon{position:absolute;left:1rem;top:50%;transform:translateY(-50%);color:var(--text-muted);font-size:1.1rem;pointer-events:none}.mastery-search-input{width:100%;background:var(--bg-card);border:1px solid var(--glass-border);border-radius:14px;padding:.75rem 1rem .75rem 2.75rem;color:var(--text-main);font-family:inherit;font-size:.9rem;outline:none;transition:border-color .25s ease,box-shadow .25s ease}.mastery-search-input:focus{border-color:var(--primary);box-shadow:0 0 0 3px #8b5cf61f}.mastery-toolbar-group{display:flex;flex-direction:column;gap:.6rem}.mastery-toolbar-label{font-size:.68rem;font-weight:800;letter-spacing:.1em;text-transform:uppercase;color:var(--text-muted)}.mastery-pills{display:flex;flex-wrap:wrap;gap:.5rem}.mastery-pill{display:inline-flex;align-items:center;gap:.4rem;padding:.5rem 1rem;border-radius:100px;border:1px solid var(--glass-border);background:var(--bg-card);color:var(--text-muted);font-size:.82rem;font-weight:600;cursor:pointer;transition:all .2s ease;font-family:inherit;white-space:nowrap}.mastery-pill:hover{color:var(--text-main);border-color:var(--glass-border-hover);background:#ffffff0a}.mastery-pill.active{color:var(--text-inverse);border-color:transparent;background:var(--primary);box-shadow:0 4px 14px var(--primary-glow)}.mastery-pill .pill-dot{width:7px;height:7px;border-radius:50%}.mastery-pill.diff-easy .pill-dot{background:var(--color-easy)}.mastery-pill.diff-medium .pill-dot{background:var(--color-medium)}.mastery-pill.diff-hard .pill-dot{background:var(--color-hard)}.mastery-pill.diff-easy.active{background:var(--color-easy);box-shadow:0 4px 14px #10b9814d}.mastery-pill.diff-medium.active{background:var(--color-medium);box-shadow:0 4px 14px #ffa1164d;color:#1a1a1a}.mastery-pill.diff-hard.active{background:var(--color-hard);box-shadow:0 4px 14px #ef44444d}.mastery-pill.platform-leetcode.active{background:var(--color-leetcode);box-shadow:0 4px 14px #faa1164d;color:#1a1a1a}.mastery-pill.platform-gfg.active{background:var(--color-gfg);box-shadow:0 4px 14px #2f8d464d}.mastery-pill.platform-codeforces.active{background:var(--color-codeforces);box-shadow:0 4px 14px #3b82f64d}.pill-platform-icon{font-size:.65rem;font-weight:800;width:20px;height:20px;border-radius:6px;display:flex;align-items:center;justify-content:center;background:#ffffff14}.mastery-pill.platform-leetcode .pill-platform-icon{color:var(--color-leetcode)}.mastery-pill.platform-gfg .pill-platform-icon{color:var(--color-gfg)}.mastery-pill.platform-codeforces .pill-platform-icon{color:var(--color-codeforces)}.mastery-pill.active .pill-platform-icon{background:#00000026;color:inherit}.mastery-topic-select-wrap{position:relative;display:flex;align-items:center}.mastery-topic-select-wrap ion-icon{position:absolute;left:1rem;color:var(--text-muted);font-size:1rem;pointer-events:none}.mastery-topic-select{width:100%;-webkit-appearance:none;-moz-appearance:none;appearance:none;background-color:var(--bg-card);border:1px solid var(--glass-border);border-radius:14px;padding:.7rem 2.5rem .7rem 2.75rem;color:var(--text-main);font-family:inherit;font-size:.88rem;font-weight:600;cursor:pointer;outline:none;transition:border-color .25s ease;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2394a3b8' d='M6 8L1 3h10z'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 1rem center}.mastery-topic-select:focus{border-color:var(--primary)}.mastery-topic-select option{background:var(--bg-main);color:var(--text-main)}.v6-progress-track{width:100%;height:8px;background:#ffffff08;border-radius:100px;overflow:hidden;position:relative}.v6-progress-bar{height:100%;background:linear-gradient(90deg,var(--primary),var(--accent));border-radius:100px;position:relative;transition:width .8s cubic-bezier(.19,1,.22,1)}.v6-bar-glow{position:absolute;top:0;right:0;width:15px;height:100%;background:#fff;filter:blur(3px);opacity:.5}.practice-progress-container{width:100%;max-width:200px;display:flex;flex-direction:column;gap:.3rem;margin-top:.4rem}.practice-progress-wrapper{display:flex;flex-direction:column;gap:.2rem;align-items:stretch}.practice-progress-track{width:100%;height:10px;background:#ffffff0a;border-radius:100px;overflow:hidden;position:relative;border:1px solid rgba(255,255,255,.08);box-shadow:inset 0 1px 2px #0003}.practice-progress-track.progress-empty{background:#6b728014;border-color:#6b728026}.practice-progress-track.progress-easy{background:#10b98114;border-color:#10b98133}.practice-progress-track.progress-medium{background:#ffa11614;border-color:#ffa11633}.practice-progress-track.progress-hard{background:#8b5cf61f;border-color:#8b5cf64d}.practice-checkpoints{position:absolute;top:0;left:0;right:0;bottom:0;z-index:1;pointer-events:none}.practice-checkpoint{position:absolute;top:50%;width:1.5px;height:14px;background:#fff3;transform:translateY(-50%);border-radius:2px}.practice-progress-fill{height:100%;background:linear-gradient(90deg,var(--primary) 0%,#a78bfa 50%,var(--accent) 100%);border-radius:100px;position:relative;transition:width 1.2s cubic-bezier(.34,1.56,.64,1);box-shadow:0 0 20px #8b5cf666;overflow:hidden}.practice-progress-fill.progress-easy{background:linear-gradient(90deg,#10b981,#6ee7b7,#a7f3d0);box-shadow:0 0 20px #10b98166}.practice-progress-fill.progress-medium{background:linear-gradient(90deg,#ffa116,#ffb84d,#ffc56d);box-shadow:0 0 20px #ffa11666}.practice-progress-fill.progress-hard{background:linear-gradient(90deg,#8b5cf6,#a78bfa,#c4b5fd);box-shadow:0 0 20px #8b5cf680}.practice-bar-glow{position:absolute;top:-1px;right:-1px;width:16px;height:12px;background:radial-gradient(circle,rgba(255,255,255,.8) 0%,rgba(255,255,255,.4) 50%,transparent 100%);filter:blur(3px);opacity:.6}.practice-bar-spark{position:absolute;top:50%;right:10%;width:3px;height:3px;background:#fff;border-radius:50%;opacity:0;animation:spark-dance 2s ease-in-out infinite;transform:translateY(-50%)}@keyframes spark-dance{0%,to{opacity:0;transform:translateY(-50%) scale(1)}50%{opacity:.8;transform:translateY(-50%) scale(1.5)}}.practice-progress-stats{display:flex;justify-content:space-between;align-items:center;font-size:.75rem;gap:.6rem}.practice-percentage{display:flex;align-items:center;gap:.3rem}.progress-value{font-family:var(--font-mono);font-weight:700;font-size:.85rem;background:linear-gradient(135deg,var(--primary),var(--accent));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.progress-badge{display:inline-flex;align-items:center;gap:.3rem;padding:.2rem .5rem;background:#10b98126;border:1px solid rgba(16,185,129,.3);border-radius:20px;font-size:.65rem;font-weight:600;color:#10b981;animation:badge-pop .6s cubic-bezier(.34,1.56,.64,1)}@keyframes badge-pop{0%{scale:0;opacity:0}to{scale:1;opacity:1}}[data-theme=light] .practice-progress-track{background:#0000000d;border-color:#0000001a;box-shadow:inset 0 1px 3px #0000000d}[data-theme=light] .practice-progress-track.progress-empty{background:#6b728014;border-color:#6b728033}[data-theme=light] .practice-progress-track.progress-easy{background:#10b9811a;border-color:#10b98140}[data-theme=light] .practice-progress-track.progress-medium{background:#ffa1161a;border-color:#ffa11640}[data-theme=light] .practice-progress-track.progress-hard{background:#8b5cf61a;border-color:#8b5cf64d}[data-theme=light] .practice-checkpoint{background:#00000026}[data-theme=light] .practice-progress-fill{box-shadow:0 0 20px #8b5cf64d}[data-theme=light] .practice-progress-fill.progress-easy{box-shadow:0 0 20px #10b9814d}[data-theme=light] .practice-progress-fill.progress-medium{box-shadow:0 0 20px #ffa1164d}.v5-content-feed{display:flex;flex-direction:column;gap:4rem}.v5-topic-section{position:relative}.v5-topic-meta{margin-bottom:1.5rem}.v5-topic-title{font-family:var(--font-heading);font-size:1.6rem;font-weight:800;margin-bottom:.4rem}.v5-topic-description{font-size:.95rem;color:var(--text-muted)}.v5-subtopic-block{margin-top:2rem;margin-bottom:2rem}.v5-subtopic-name{font-family:var(--font-heading);font-size:.9rem;font-weight:800;color:var(--primary);text-transform:uppercase;letter-spacing:.08em;margin-bottom:1rem;display:flex;align-items:center;gap:1rem}.v5-subtopic-name:after{content:"";flex:1;height:1px;background:var(--glass-border)}.v5-list{display:flex;flex-direction:column;gap:.75rem}.v5-item-row{background:var(--bg-card);border:1px solid var(--glass-border);border-radius:16px;padding:1rem 1.5rem;display:grid;grid-template-columns:40px 1fr auto;align-items:center;gap:2rem;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);transition:all .3s cubic-bezier(.25,1,.5,1)}.v5-item-row:hover{border-color:var(--glass-border-hover);transform:translate(6px);background:var(--bg-card-hover)}.v5-item-row.is-solved{background:#10b98108;border-color:#10b98126}.v5-modern-checkbox{background:none;border:none;cursor:pointer}.v5-box{width:24px;height:24px;border:2px solid var(--glass-border);border-radius:8px;display:flex;align-items:center;justify-content:center;color:transparent;transition:all .2s}.v5-box.checked{background:var(--success);border-color:var(--success);color:var(--text-inverse);box-shadow:0 0 10px #10b9814d}.v5-box ion-icon{font-size:1.1rem}.v5-p-name{font-size:1.05rem;font-weight:700;color:var(--text-main)}.is-solved .v5-p-name{color:var(--success);text-decoration:line-through;opacity:.75}.v5-cell.content{display:flex;align-items:center;gap:1.5rem}.v5-difficulty-mini{font-size:.65rem;font-weight:800;padding:.2rem .5rem;border-radius:6px;text-transform:uppercase}.v5-difficulty-mini.easy{background:#10b9811a;color:var(--color-easy)}.v5-difficulty-mini.medium{background:#f59e0b1a;color:var(--color-medium)}.v5-difficulty-mini.hard{background:#ef44441a;color:var(--color-hard)}.v5-cell.links{display:flex;gap:.5rem}.v5-platform-link{font-size:.75rem;font-weight:700;padding:.4rem .8rem;border-radius:8px;text-decoration:none;background:#ffffff08;border:1px solid var(--glass-border);color:var(--text-muted);transition:all .25s}.v5-platform-link:hover{color:var(--text-main);border-color:var(--primary);background:#8b5cf614}.v5-platform-link.lc:hover{border-color:var(--color-leetcode);color:var(--color-leetcode)}.v5-platform-link.cf:hover{border-color:var(--color-codeforces);color:var(--color-codeforces)}.v5-platform-link.gfg:hover{border-color:var(--color-gfg);color:var(--color-gfg)}.back-to-top{position:fixed;bottom:2rem;right:2rem;width:44px;height:44px;background:var(--primary);border:none;border-radius:50%;color:var(--text-inverse);font-size:1.4rem;display:flex;align-items:center;justify-content:center;cursor:pointer;z-index:1000;opacity:0;visibility:hidden;box-shadow:0 10px 20px var(--primary-glow);transition:all .3s cubic-bezier(.175,.885,.32,1.275)}.back-to-top.visible{opacity:1;visibility:visible}.back-to-top:hover{transform:translateY(-5px);background:#9d73f7}.skeleton-loader{width:100%;height:200px;background:linear-gradient(90deg,var(--bg-card) 25%,rgba(255,255,255,.03) 50%,var(--bg-card) 75%);background-size:200% 100%;border:1px solid var(--glass-border);border-radius:20px;animation:loading-shimmer 1.5s infinite}@keyframes loading-shimmer{0%{background-position:200% 0}to{background-position:-200% 0}}@media (pointer: fine){body,a,button,.clickable-card,.clickable-stat,[role=button],input,select,textarea{cursor:none}}.custom-cursor-dot,.custom-cursor-outline{display:none;pointer-events:none;position:fixed;top:0;left:0;z-index:10001;transform:translate(-50%,-50%)}@media (pointer: fine){.custom-cursor-dot,.custom-cursor-outline{display:block}.custom-cursor-dot{width:6px;height:6px;background:var(--primary);border-radius:50%;z-index:10002}.custom-cursor-outline{width:36px;height:36px;border:1.5px solid var(--accent);border-radius:50%;background:transparent}}header.header-scrolled .nav-container{border-color:#8b5cf640;box-shadow:0 12px 40px #00000059}.active-indicator{position:absolute;bottom:.15rem;left:50%;transform:translate(-50%);width:4px;height:4px;background:var(--primary);border-radius:50%}.theme-btn:focus-visible,.hamburger-btn:focus-visible,.nav-item:focus-visible{outline:2px solid var(--primary);outline-offset:2px}.mobile-dropdown{margin-top:.75rem;background:var(--glass-bg);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border:1px solid var(--glass-border);border-radius:16px;padding:.75rem;display:flex;flex-direction:column;gap:.25rem;box-shadow:0 20px 40px #0000004d}.mobile-nav-item{display:flex;align-items:center;gap:.75rem;padding:.85rem 1rem;border-radius:12px;color:var(--text-muted);text-decoration:none;font-weight:600;transition:all .2s ease}.mobile-nav-item:hover,.mobile-nav-item.active{color:var(--text-main);background:#8b5cf614}.mobile-nav-item.active{color:var(--primary)}.mobile-nav-footer{margin-top:.5rem;padding-top:.75rem;border-top:1px solid var(--glass-border)}.theme-toggle-mobile{width:100%;display:flex;align-items:center;gap:.75rem;padding:.85rem 1rem;background:#ffffff08;border:1px solid var(--glass-border);border-radius:12px;color:var(--text-main);font-weight:600;cursor:pointer;transition:all .2s ease}.theme-toggle-mobile:hover{border-color:var(--primary);background:#8b5cf614}.glass-btn{background:#ffffff08;border:1px solid var(--glass-border);color:var(--text-main);width:40px;height:40px;border-radius:12px;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .25s ease}.glass-btn:hover{border-color:var(--primary);background:#8b5cf61a;color:var(--primary)}.glass-btn:focus-visible{outline:2px solid var(--primary);outline-offset:2px}.card-header{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:.5rem}.card-glass{position:absolute;top:0;right:0;bottom:0;left:0;background:linear-gradient(135deg,rgba(255,255,255,.02),transparent);pointer-events:none}.card-accent{position:absolute;top:0;right:0;width:80px;height:80px;background:radial-gradient(circle,var(--primary-glow),transparent 70%);pointer-events:none}.next-badge,.ended-badge,.today-badge{font-size:.65rem;font-weight:800;letter-spacing:.08em;padding:.25rem .6rem;border-radius:100px;background:#8b5cf61a;color:var(--primary)}.ended-badge{background:#94a3b81f;color:var(--text-muted)}.today-badge{background:#f43f5e1a;color:var(--accent)}.stat-value-mid{font-family:var(--font-heading);font-size:1.4rem;font-weight:800;color:var(--text-muted)}.p-dot{width:8px;height:8px;border-radius:50%;flex-shrink:0}.p-dot-leetcode{background:var(--color-leetcode)}.p-dot-codeforces{background:var(--color-codeforces)}.p-dot-codechef{background:var(--color-codechef)}.p-dot-atcoder{background:var(--color-atcoder)}.hall-dot.dot-leetcode{background:var(--color-leetcode)}.hall-dot.dot-codeforces{background:var(--color-codeforces)}.hall-dot.dot-codechef{background:var(--color-codechef)}.hall-dot.dot-atcoder{background:var(--color-atcoder)}.section-subtitle{color:var(--text-muted);font-size:.95rem;margin-top:.25rem}.flux-detail-card{position:absolute;bottom:calc(100% + 12px);left:50%;transform:translate(-50%);background:#09090ff5;border:1px solid var(--glass-border);border-radius:14px;padding:.85rem 1rem;min-width:220px;z-index:20;box-shadow:0 15px 40px #00000073;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}.detail-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:.5rem}.detail-badge{font-size:.65rem;font-weight:800;color:var(--primary);text-transform:uppercase}.detail-time-group{display:flex;gap:.5rem;font-size:.7rem;color:var(--text-muted)}.detail-title{font-size:.85rem;font-weight:700;margin-bottom:.5rem}.detail-footer{display:flex;align-items:center;justify-content:space-between;font-size:.75rem;color:var(--primary);font-weight:600}.flux-timeline-axis{position:absolute;bottom:1rem;left:2rem;right:2rem;z-index:2;pointer-events:none}.axis-line{height:1px;background:linear-gradient(90deg,var(--primary),transparent);opacity:.3}.axis-labels{display:flex;justify-content:space-between;margin-top:.4rem;font-size:.65rem;font-weight:800;letter-spacing:.1em;color:var(--text-muted)}.live-clock{display:inline-flex;align-items:center;gap:.5rem;font-family:var(--font-mono);font-size:.78rem;color:var(--text-muted);background:#ffffff08;border:1px solid var(--glass-border);border-radius:100px;padding:.45rem 1rem}.live-clock-pulse{width:6px;height:6px;border-radius:50%;background:var(--success);box-shadow:0 0 8px #10b98199;animation:blink-pulse 2s infinite;flex-shrink:0}.live-clock-date{color:var(--text-muted);font-weight:500}.live-clock-sep{opacity:.35}.live-clock-time{color:var(--text-main);font-weight:600;letter-spacing:.02em}.live-clock-tz{color:var(--primary);font-size:.7rem;font-weight:600}.site-footer{margin-top:5rem;padding-bottom:2rem}.site-footer a,.site-footer a:visited{text-decoration:none}.footer-shell{position:relative;background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:24px;backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);overflow:hidden;box-shadow:0 12px 48px #0000001f}.footer-shell:before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--primary),var(--accent));opacity:.85}.footer-main{display:grid;grid-template-columns:1.2fr 1.8fr;gap:3rem;padding:2.5rem 2.5rem 2rem;border-bottom:1px solid var(--glass-border)}.footer-logo{display:inline-flex;align-items:center;gap:.5rem;font-family:var(--font-heading);font-size:1.35rem;font-weight:800;color:var(--text-main);text-decoration:none;margin-bottom:.85rem}.footer-logo ion-icon{color:var(--primary);font-size:1.5rem}.footer-tagline{font-size:.9rem;line-height:1.6;color:var(--text-muted);max-width:320px;margin-bottom:1.25rem}.footer-socials{display:flex;gap:.6rem}.footer-socials a{width:36px;height:36px;border-radius:10px;border:1px solid var(--glass-border);background:#ffffff05;display:flex;align-items:center;justify-content:center;color:var(--text-muted);font-size:1.05rem;text-decoration:none;transition:all .2s ease}.footer-socials a:hover{color:var(--primary);border-color:#8b5cf659;background:#8b5cf614}.footer-nav{display:grid;grid-template-columns:repeat(3,1fr);gap:2rem}.footer-nav-col h4{font-size:.68rem;font-weight:800;letter-spacing:.12em;text-transform:uppercase;color:var(--text-muted);margin-bottom:1rem}.footer-nav-col ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:.65rem}.footer-nav-col a{color:var(--text-muted);text-decoration:none;font-size:.88rem;font-weight:500;transition:color .2s ease}.footer-nav-col a:hover{color:var(--primary)}.footer-bar{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:1rem 2.5rem;flex-wrap:wrap;background:#ffffff05}[data-theme=light] .footer-bar{background:#f8fafc}.footer-copy{font-size:.82rem;color:var(--text-muted)}.footer-copy strong{color:var(--text-main);font-weight:700}.footer-status{display:inline-flex;align-items:center;gap:.4rem;font-size:.75rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--success)}.footer-status-dot{width:6px;height:6px;border-radius:50%;background:var(--success);box-shadow:0 0 8px #10b98180;animation:blink-pulse 2s infinite}.practice-main{padding-top:1rem}.v5-modern-checkbox:focus-visible .v5-box{outline:2px solid var(--primary);outline-offset:2px}:focus-visible{outline:2px solid var(--primary);outline-offset:2px}.filter-chip:focus-visible,.toggle-btn:focus-visible,.join-btn:focus-visible,.mastery-launch-btn:focus-visible,.back-to-top:focus-visible{outline:2px solid var(--primary);outline-offset:2px}.search-input:focus-visible{outline:none}.back-to-top:focus-visible{opacity:1;visibility:visible}@media (max-width: 1024px){.split-layout{grid-template-columns:1fr}.ended-side{margin-top:2rem}}@media (max-width: 768px){.nav-links{display:none}.hamburger-btn{display:block}.filters{flex-direction:column;align-items:stretch}.search-wrapper{max-width:100%}.filter-chips-group{flex-wrap:wrap}.view-toggle{align-self:flex-start}.mastery-command-top{flex-direction:column;text-align:center}.mastery-ring{margin:0 auto}.mastery-stats-grid{grid-template-columns:1fr}.mastery-pills{gap:.4rem}.mastery-pill{font-size:.78rem;padding:.4rem .75rem}.mastery-layout{grid-template-columns:1fr;gap:1.5rem;text-align:center}.mastery-cta{align-items:center}.mastery-divider{display:none}.hero-stats{flex-direction:column;gap:1.5rem;padding:1.2rem}.footer-main{grid-template-columns:1fr;gap:2rem;padding:2rem 1.5rem 1.5rem}.footer-nav{grid-template-columns:1fr 1fr;gap:1.5rem}.footer-bar{flex-direction:column;text-align:center;padding:1rem 1.5rem 1.25rem;gap:.75rem}.live-clock{font-size:.72rem;padding:.4rem .85rem;flex-wrap:wrap;justify-content:center}.v5-item-row{grid-template-columns:36px 1fr;gap:1rem}.v5-cell.links{grid-column:1 / -1;flex-wrap:wrap}.intensity-header-new{flex-direction:column;align-items:flex-start;gap:1rem}.rec-banner{width:100%}}@media (max-width: 360px){.app-container{padding:0 .75rem}.hero h1{font-size:2.2rem}.hero p{font-size:.9rem}.contest-card{padding:1.25rem 1rem}.contest-name{font-size:1.05rem;word-break:break-word;overflow-wrap:anywhere}.stat-cards{grid-template-columns:1fr}}@media (max-width: 320px){.app-container{padding:0 .5rem}.brand{font-size:1.1rem}.hero h1{font-size:1.9rem}.contest-card{padding:1rem .75rem}}.intensity-section-v2{margin-top:5rem;display:flex;flex-direction:column;gap:2.25rem}.intensity-header-v2{display:flex;justify-content:space-between;align-items:flex-end;gap:2rem;flex-wrap:wrap}.intensity-title-group{display:flex;flex-direction:column;gap:.4rem}.intensity-badge-chip{display:inline-flex;align-items:center;gap:.5rem;padding:.3rem .75rem;border-radius:100px;background:#8b5cf614;border:1px solid rgba(139,92,246,.2);font-size:.68rem;font-weight:800;letter-spacing:.08em;color:var(--primary);width:fit-content}.pulse-beacon{width:6px;height:6px;border-radius:50%;background:var(--primary);box-shadow:0 0 10px var(--primary);animation:blink-pulse 1.8s infinite}.intensity-rec-card{display:flex;align-items:center;gap:1rem;padding:1rem 1.35rem;background:#0d0d1899;-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);border:1px solid rgba(139,92,246,.25);border-radius:18px;max-width:480px;box-shadow:0 8px 30px #00000040}[data-theme=light] .intensity-rec-card{background:#ffffffd9;border-color:#6d28d92e}.rec-icon-glow{width:38px;height:38px;border-radius:12px;background:#8b5cf61f;border:1px solid rgba(139,92,246,.3);display:flex;align-items:center;justify-content:center;color:var(--primary);font-size:1.2rem;flex-shrink:0}.rec-body{display:flex;flex-direction:column;gap:.2rem}.rec-tag{font-size:.65rem;font-weight:800;letter-spacing:.08em;color:var(--primary)}.rec-text{font-size:.84rem;line-height:1.45;color:var(--text-main);font-weight:500}.intensity-grid-v2{display:grid;grid-template-columns:repeat(2,1fr);gap:1.5rem}.platform-intensity-card{position:relative;background:var(--bg-card);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border:1px solid var(--glass-border);border-radius:20px;padding:1.5rem;overflow:hidden;display:flex;flex-direction:column;justify-content:space-between;gap:1.5rem;box-shadow:0 10px 30px #0003;transition:all .35s cubic-bezier(.16,1,.3,1)}.platform-intensity-card:hover{transform:translateY(-4px);border-color:var(--p-border-glow);box-shadow:0 16px 40px #00000059}.card-aura-bg{position:absolute;top:-40px;right:-40px;width:140px;height:140px;border-radius:50%;background:radial-gradient(circle,var(--p-glow),transparent 70%);pointer-events:none;transition:opacity .3s ease}.p-card-header{display:flex;justify-content:space-between;align-items:flex-start;gap:1rem}.p-brand{display:flex;align-items:center;gap:.85rem}.p-icon-box{width:44px;height:44px;border-radius:12px;background:var(--p-glow);border:1px solid var(--p-border-glow);display:flex;align-items:center;justify-content:center;color:var(--p-color);font-size:1.35rem;flex-shrink:0}.p-name{font-family:var(--font-heading);font-size:1.15rem;font-weight:800;color:var(--text-main);margin:0}.p-tagline{font-size:.75rem;color:var(--text-muted);display:block}.p-status-pill{display:inline-flex;align-items:center;gap:.4rem;padding:.25rem .65rem;border-radius:100px;font-size:.65rem;font-weight:800;letter-spacing:.06em}.p-status-dot{width:5px;height:5px;border-radius:50%}.status-surge{background:#f43f5e1f;color:var(--accent);border:1px solid rgba(244,63,94,.25)}.status-surge .p-status-dot{background:var(--accent)}.status-optimal{background:#10b9811f;color:var(--success);border:1px solid rgba(16,185,129,.25)}.status-optimal .p-status-dot{background:var(--success)}.status-moderate{background:#3b82f61f;color:var(--primary);border:1px solid rgba(59,130,246,.25)}.status-moderate .p-status-dot{background:var(--primary)}.status-steady{background:#94a3b81f;color:var(--text-muted);border:1px solid rgba(148,163,184,.2)}.status-steady .p-status-dot{background:var(--text-muted)}.p-card-body{display:flex;flex-direction:column;gap:1rem}.p-stat-hero{display:flex;align-items:baseline;gap:.75rem}.p-stat-number{font-family:var(--font-heading);font-size:2.5rem;font-weight:800;line-height:1;color:var(--text-main)}.p-stat-meta{display:flex;flex-direction:column}.p-stat-unit{font-size:.7rem;font-weight:800;letter-spacing:.08em;color:var(--p-color)}.p-stat-sub{font-size:.75rem;color:var(--text-muted)}.p-intensity-meter{display:flex;flex-direction:column;gap:.4rem}.meter-info{display:flex;justify-content:space-between;font-size:.72rem}.meter-lbl{color:var(--text-muted);font-weight:500}.meter-val{color:var(--text-main);font-weight:700}.meter-track{height:6px;background:#ffffff0f;border-radius:3px;overflow:hidden}[data-theme=light] .meter-track{background:#0000000f}.meter-fill{height:100%;border-radius:3px;transition:width .6s ease}.p-card-footer{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding-top:1rem;border-top:1px solid var(--glass-border)}.p-next-info{display:flex;flex-direction:column;gap:.15rem;max-width:220px}.p-next-label{font-size:.62rem;font-weight:800;letter-spacing:.08em;color:var(--text-muted)}.p-next-name{font-size:.8rem;font-weight:600;color:var(--text-main);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.p-next-time{font-size:.72rem;font-weight:700;color:var(--p-color);background:var(--p-glow);padding:.2rem .55rem;border-radius:6px;white-space:nowrap}.p-next-none{font-size:.78rem;color:var(--text-muted)}.p-action-btn{display:inline-flex;align-items:center;gap:.4rem;background:#ffffff0a;border:1px solid var(--glass-border);color:var(--text-main);font-size:.78rem;font-weight:600;padding:.45rem .85rem;border-radius:10px;cursor:pointer;transition:all .25s ease;flex-shrink:0}.p-action-btn:hover{background:var(--p-glow);border-color:var(--p-border-glow);color:var(--p-color);transform:translate(2px)}.site-footer-v2{margin-top:6rem;padding-bottom:2.5rem;position:relative}.footer-lightbar-divider{position:relative;width:100%;height:1px;background:#ffffff14;margin-bottom:2.5rem}.lightbar-glow{position:absolute;top:-1px;left:20%;right:20%;height:2px;background:linear-gradient(90deg,transparent,var(--primary),var(--accent),transparent);filter:blur(1px)}.footer-hull{background:var(--glass-bg);backdrop-filter:blur(24px);-webkit-backdrop-filter:blur(24px);border:1px solid var(--glass-border);border-radius:28px;padding:2.5rem;box-shadow:0 20px 60px #00000040;display:flex;flex-direction:column;gap:2.5rem}[data-theme=light] .footer-hull{background:#ffffffe0;border-color:#00000014}.footer-highlight-bar{display:flex;align-items:center;justify-content:space-around;gap:1.5rem;padding:1rem 1.5rem;background:#ffffff05;border:1px solid var(--glass-border);border-radius:16px;flex-wrap:wrap}.highlight-item{display:flex;align-items:center;gap:.6rem;font-size:.85rem;color:var(--text-muted)}.highlight-item ion-icon{font-size:1.1rem;color:var(--primary)}.highlight-item strong{color:var(--text-main)}.highlight-dot{width:4px;height:4px;border-radius:50%;background:#fff3}.footer-main-v2{display:grid;grid-template-columns:1.3fr 1.7fr;gap:3.5rem}.footer-brand-v2{display:flex;flex-direction:column;gap:1.15rem}.footer-logo-v2{display:inline-flex;align-items:center;gap:.75rem;text-decoration:none;width:fit-content}.logo-icon-box{width:40px;height:40px;border-radius:12px;background:#8b5cf61f;border:1px solid rgba(139,92,246,.3);display:flex;align-items:center;justify-content:center;color:var(--primary);font-size:1.3rem}.logo-text{font-family:var(--font-heading);font-size:1.45rem;font-weight:800;color:var(--text-main)}.footer-desc{font-size:.88rem;line-height:1.6;color:var(--text-muted);max-width:380px}.developer-credit-pill{display:inline-flex;align-items:center;gap:.5rem;font-size:.78rem;color:var(--text-muted);background:#ffffff08;border:1px solid var(--glass-border);padding:.35rem .85rem;border-radius:100px;width:fit-content}.dev-dot{width:6px;height:6px;border-radius:50%;background:var(--success)}.developer-credit-pill strong{color:var(--text-main)}.footer-socials-v2{display:flex;gap:.65rem}.footer-socials-v2 a{width:38px;height:38px;border-radius:12px;background:#ffffff08;border:1px solid var(--glass-border);display:flex;align-items:center;justify-content:center;color:var(--text-muted);font-size:1.1rem;text-decoration:none;transition:all .25s ease}.footer-socials-v2 a:hover{color:var(--primary);border-color:#8b5cf659;background:#8b5cf61a;transform:translateY(-2px)}.footer-nav-v2{display:grid;grid-template-columns:repeat(3,1fr);gap:2rem}.footer-col{display:flex;flex-direction:column;gap:1rem}.col-title{display:flex;align-items:center;gap:.4rem;font-size:.72rem;font-weight:800;letter-spacing:.1em;text-transform:uppercase;color:var(--text-muted)}.col-title ion-icon{color:var(--primary)}.col-links{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:.75rem}.col-links a{display:inline-flex;align-items:center;gap:.4rem;color:var(--text-muted);font-size:.88rem;font-weight:500;text-decoration:none;transition:color .2s ease,transform .2s ease}.col-links a:hover{color:var(--primary);transform:translate(2px)}.col-badge{font-size:.65rem;font-weight:800;padding:.1rem .4rem;border-radius:6px;background:#8b5cf61f;color:var(--primary)}.footer-bottom-bar{display:flex;align-items:center;justify-content:space-between;gap:1.5rem;padding-top:1.75rem;border-top:1px solid var(--glass-border);flex-wrap:wrap}.copy-text{font-size:.82rem;color:var(--text-muted)}.copy-text strong{color:var(--text-main)}.bottom-right{display:flex;align-items:center;gap:1rem}.system-status-pill{display:inline-flex;align-items:center;gap:.45rem;font-size:.68rem;font-weight:800;letter-spacing:.08em;color:var(--success);background:#10b98114;border:1px solid rgba(16,185,129,.2);padding:.35rem .75rem;border-radius:100px}.status-pulse-dot{width:6px;height:6px;border-radius:50%;background:var(--success);box-shadow:0 0 8px var(--success);animation:blink-pulse 2s infinite}.footer-back-to-top{width:36px;height:36px;border-radius:10px;background:#ffffff0a;border:1px solid var(--glass-border);color:var(--text-main);display:flex;align-items:center;justify-content:center;cursor:pointer;font-size:1.1rem;transition:all .25s ease}.footer-back-to-top:hover{background:var(--primary);border-color:var(--primary);color:#fff;transform:translateY(-2px)}@media (max-width: 1024px){.intensity-grid-v2{grid-template-columns:1fr}.footer-main-v2{grid-template-columns:1fr;gap:2.5rem}}@media (max-width: 768px){.intensity-header-v2{flex-direction:column;align-items:flex-start}.intensity-rec-card{max-width:100%}.footer-hull{padding:1.5rem}.footer-highlight-bar{flex-direction:column;align-items:flex-start;gap:.75rem}.highlight-dot{display:none}.footer-nav-v2{grid-template-columns:1fr 1fr;gap:1.5rem}.footer-bottom-bar{flex-direction:column;align-items:flex-start}}@media (max-width: 480px){.footer-nav-v2{grid-template-columns:1fr}}