:root{--color-bg: #0C0C14;--color-surface: #131320;--color-surface-hover: #1A1A2E;--color-border: rgba(139, 92, 246, .15);--color-border-solid: rgba(139, 92, 246, .25);--color-border-focus: #8B5CF6;--color-primary: #8B5CF6;--color-primary-end: #6366F1;--color-primary-dim: rgba(139, 92, 246, .12);--color-primary-hover: #7C3AED;--color-accent: #06B6D4;--color-accent-dim: rgba(6, 182, 212, .12);--color-amber: #F59E0B;--color-amber-dim: rgba(245, 158, 11, .15);--color-blue: #3B82F6;--color-blue-dim: rgba(59, 130, 246, .15);--color-emerald: #10B981;--color-emerald-dim: rgba(16, 185, 129, .15);--color-rose: #F43F5E;--color-rose-dim: rgba(244, 63, 94, .15);--color-text: #F4F4F5;--color-text-muted: #A1A1AA;--color-text-subtle: #71717A;--color-text-disabled: #52525B;--color-success: #10B981;--color-error: #F43F5E;--color-warning: #F59E0B;--gradient-primary: linear-gradient(135deg, #8B5CF6, #6366F1);--gradient-accent: linear-gradient(135deg, #8B5CF6, #06B6D4);--gradient-text: linear-gradient(135deg, #8B5CF6, #06B6D4);--shadow-sm: 0 2px 8px rgba(0, 0, 0, .4);--shadow-card: 0 4px 16px rgba(0, 0, 0, .5);--shadow-card-hover: 0 8px 28px rgba(0, 0, 0, .65);--shadow-lg: 0 12px 40px rgba(0, 0, 0, .7);--shadow-glow: 0 0 20px rgba(139, 92, 246, .35);--shadow-glow-cyan: 0 0 20px rgba(6, 182, 212, .3);--shadow-glow-sm: 0 0 10px rgba(139, 92, 246, .25);--font-heading: "Space Grotesk", sans-serif;--font-body: "Inter", sans-serif;--font-family: var(--font-body);--space-xs: .25rem;--space-sm: .5rem;--space-md: 1rem;--space-lg: 1.5rem;--space-xl: 2rem;--space-2xl: 3rem;--radius-sm: .5rem;--radius-md: .875rem;--radius-lg: 1.25rem;--radius-xl: 1.75rem;--radius-full: 9999px;--transition-fast: .15s cubic-bezier(.4, 0, .2, 1);--transition-base: .28s cubic-bezier(.4, 0, .2, 1);--transition-slow: .5s cubic-bezier(.4, 0, .2, 1);--color-surface-elevated: #1A1A2E;--color-secondary: var(--color-primary);--font-size-xs: .75rem;--font-size-sm: .8125rem;--font-size-base: 1rem;--font-size-lg: 1.125rem;--font-size-xl: 1.375rem;--font-size-2xl: 1.75rem;--font-size-3xl: 2.5rem}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{font-family:var(--font-body);background-color:var(--color-bg);color:var(--color-text);line-height:1.6;min-height:100dvh;overflow-x:hidden}h1,h2,h3,h4,h5,h6{font-family:var(--font-heading);letter-spacing:-.02em;color:var(--color-text)}a{color:var(--color-primary);text-decoration:none;transition:color var(--transition-fast)}a:hover{color:var(--color-accent)}button{font-family:inherit;cursor:pointer;border:none;background:none}*:focus{outline:none}*:focus-visible{outline:2px solid var(--color-primary);outline-offset:3px;border-radius:var(--radius-sm)}button:focus-visible,.btn:focus-visible{outline:2px solid var(--color-primary);outline-offset:3px}a:focus-visible{outline:2px solid var(--color-primary);outline-offset:2px;border-radius:3px}input:focus-visible,textarea:focus-visible,select:focus-visible{outline:2px solid var(--color-primary);outline-offset:0}.nav-item:focus-visible{outline:2px solid var(--color-primary);outline-offset:2px;border-radius:var(--radius-md)}.quiz-option:focus-visible,.drag-item:focus-visible,.checklist-item:focus-visible,.self-check-item:focus-visible{outline:2px solid var(--color-primary);outline-offset:2px}.drag-pool:focus-visible,.drag-category:focus-visible{outline:2px dashed var(--color-primary);outline-offset:4px}#root{min-height:100dvh;display:flex;flex-direction:column}.app-layout{display:flex;flex-direction:column;min-height:100dvh;background:var(--color-bg)}.animated-routes{flex:1;display:flex;flex-direction:column;overflow-y:auto;padding-bottom:64px}.container{width:100%;max-width:480px;margin:0 auto;padding:0 var(--space-md)}.text-muted{color:var(--color-text-muted)}.text-subtle{color:var(--color-text-subtle)}.text-primary{color:var(--color-primary)}.text-accent{color:var(--color-accent)}.text-center{text-align:center}.font-bold{font-weight:700}.text-gradient{background:var(--gradient-text);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.card{background:var(--color-surface);border-radius:var(--radius-lg);border:1px solid var(--color-border);padding:var(--space-md);transition:border-color var(--transition-fast),box-shadow var(--transition-fast)}.card:hover{border-color:var(--color-border-solid)}.card-glass{background:#131320cc;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px)}.card-interactive{cursor:pointer;transition:border-color var(--transition-fast),box-shadow var(--transition-fast),transform var(--transition-fast)}.card-interactive:hover{border-color:#8b5cf666;box-shadow:var(--shadow-glow-sm);transform:translateY(-1px)}.card-gradient-border{position:relative;background:var(--color-surface);border-radius:var(--radius-lg);border:1px solid transparent;background-clip:padding-box}.card-gradient-border:before{content:"";position:absolute;inset:-1px;border-radius:inherit;background:linear-gradient(135deg,#8b5cf64d,#06b6d426,#8b5cf61a);z-index:-1}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-sm);padding:.75rem 1.5rem;border-radius:var(--radius-md);font-weight:600;font-size:var(--font-size-base);transition:filter var(--transition-fast),transform var(--transition-fast),box-shadow var(--transition-fast);cursor:pointer;border:none;line-height:1.2;white-space:nowrap}.btn-primary{background:var(--gradient-primary);color:#fff;box-shadow:0 4px 16px #8b5cf666}.btn-primary:hover{filter:brightness(1.1);transform:translateY(-1px);box-shadow:0 6px 20px #8b5cf680}.btn-primary:active{transform:translateY(0)}.btn-accent{background:linear-gradient(135deg,var(--color-accent),#0891B2);color:#fff;box-shadow:0 4px 16px #06b6d459}.btn-accent:hover{filter:brightness(1.1);transform:translateY(-1px)}.btn-outline{background:transparent;border:1px solid var(--color-border-solid);color:var(--color-text-muted)}.btn-outline:hover{border-color:var(--color-primary);color:var(--color-primary)}.btn-ghost{background:transparent;color:var(--color-text-muted)}.btn-ghost:hover{color:var(--color-text);background:var(--color-primary-dim)}.page{flex:1;padding:var(--space-lg) 0 var(--space-xl)}.section-title{font-size:1.1rem;font-weight:700;color:var(--color-text);margin-bottom:var(--space-md);letter-spacing:-.01em}.stat{display:flex;flex-direction:column;align-items:center;gap:2px}.stat-value{font-family:var(--font-heading);font-size:1.5rem;font-weight:700;background:var(--gradient-accent);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;line-height:1}.stat-label{font-size:.7rem;color:var(--color-text-subtle);font-weight:500;text-transform:uppercase;letter-spacing:.05em}.badge{display:inline-flex;align-items:center;gap:4px;padding:3px 10px;border-radius:var(--radius-full);font-size:var(--font-size-sm);font-weight:600}.badge-primary{background:var(--color-primary-dim);color:var(--color-primary);border:1px solid rgba(139,92,246,.25)}.badge-accent{background:var(--color-accent-dim);color:var(--color-accent);border:1px solid rgba(6,182,212,.25)}@keyframes pulse-glow{0%,to{box-shadow:0 0 10px #8b5cf64d}50%{box-shadow:0 0 20px #8b5cf699}}@keyframes pulse-cyan{0%,to{box-shadow:0 0 8px #06b6d44d}50%{box-shadow:0 0 18px #06b6d499}}@keyframes fade-in{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}@keyframes slide-up{0%{opacity:0;transform:translateY(16px)}to{opacity:1;transform:translateY(0)}}@keyframes page-enter{0%{opacity:0}to{opacity:1}}.animated-routes>*{animation:page-enter .2s ease-out}.skeleton-page{padding-top:var(--space-lg)}.skeleton-row{display:flex;align-items:center;gap:var(--space-md);margin-bottom:var(--space-md)}.skeleton-card{background:var(--color-surface);border-radius:var(--radius-lg);border:1px solid var(--color-border);padding:var(--space-md);margin-bottom:var(--space-md);display:flex;flex-direction:column;gap:var(--space-sm)}.skeleton-grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:var(--space-sm)}.app-theme-toggle{position:fixed;top:var(--space-md);right:var(--space-md);z-index:500}@media(min-width:640px){.container{max-width:540px}}@media(min-width:768px){.container{max-width:600px}}@media(min-width:1100px){.app-layout{max-width:1100px;margin:0 auto}.container{max-width:700px}}.bottom-nav{position:fixed;bottom:0;left:0;right:0;height:64px;z-index:1000;display:flex;flex-direction:row;justify-content:space-around;align-items:center;padding:0 4px;background:#0c0c14f7;border-top:1px solid rgba(139,92,246,.2);box-shadow:0 -1px #8b5cf626,0 -8px 24px #0009}.nav-item{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;padding:8px 4px;text-decoration:none;color:var(--color-text-subtle);transition:color .18s ease;position:relative;min-height:64px}.nav-icon{display:block;transition:color .18s ease,filter .18s ease,transform .18s ease}.nav-label{font-size:10px;font-weight:600;letter-spacing:.03em;line-height:1;transition:color .18s ease}.nav-item:hover{color:var(--color-text-muted)}.nav-item.active{color:var(--color-primary)}.nav-item.active .nav-icon{color:var(--color-primary);filter:drop-shadow(0 0 6px rgba(139,92,246,.7));transform:translateY(-1px)}.nav-item.active .nav-label{color:var(--color-primary)}.nav-item.active:before{content:"";position:absolute;top:0;left:20%;right:20%;height:2px;background:linear-gradient(90deg,var(--color-primary),var(--color-accent));border-radius:0 0 2px 2px}.nav-item:active .nav-icon{transform:scale(.9)}.custom-icon{display:inline-block;vertical-align:middle;transition:all var(--transition-fast)}.custom-icon-party,.custom-icon-brain,.custom-icon-rocket,.custom-icon-target,.custom-icon-wave{color:#06b6d4;filter:drop-shadow(0 0 8px rgba(6,182,212,.4))}.custom-icon-lightning,.custom-icon-vocab{color:#8b5cf6;filter:drop-shadow(0 0 8px rgba(139,92,246,.4))}.custom-icon-check{color:#10b981;filter:drop-shadow(0 0 8px rgba(16,185,129,.4))}.custom-icon-cross,.custom-icon-warning{color:#ef4444;filter:drop-shadow(0 0 8px rgba(239,68,68,.4))}.custom-icon-tip{color:#f59e0b;filter:drop-shadow(0 0 8px rgba(245,158,11,.4))}.inherit-color{color:inherit;filter:none}.streak-counter{display:inline-flex;align-items:center;gap:5px;padding:6px 12px;border-radius:var(--radius-full);background:#f59e0b1a;border:1px solid rgba(245,158,11,.2);color:var(--color-text-subtle);font-size:var(--font-size-sm);font-weight:600;transition:all var(--transition-fast);cursor:default}.streak-counter.active{background:#f59e0b1f;border-color:#f59e0b59;color:var(--color-amber);animation:pulse-amber 3s ease-in-out infinite}.streak-flame{flex-shrink:0}.streak-counter.active .streak-flame{color:var(--color-amber);filter:drop-shadow(0 0 6px rgba(245,158,11,.6))}.streak-number{font-family:var(--font-heading);font-weight:700;font-size:1rem;line-height:1}.streak-label{font-size:.7rem;font-weight:600;opacity:.8;text-transform:uppercase;letter-spacing:.04em}@keyframes pulse-amber{0%,to{box-shadow:0 0 #f59e0b00}50%{box-shadow:0 0 12px 2px #f59e0b33}}.top-nav{position:sticky;top:0;z-index:100;display:flex;justify-content:space-between;align-items:center;padding:12px 20px;background:#0a0a0fd9;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-bottom:1px solid rgba(255,255,255,.05);margin-bottom:20px}.top-nav-stats{display:flex;gap:12px}.stat-pill{display:flex;align-items:center;gap:6px;padding:6px 12px;border-radius:20px;background:#ffffff08;border:1px solid rgba(255,255,255,.05);font-weight:700;font-size:.95rem;transition:transform .2s ease,box-shadow .2s ease}.stat-pill:hover{transform:translateY(-1px)}.stat-pill.hearts{color:var(--color-error);box-shadow:0 0 10px #ff33661a}.stat-pill.hearts .heart-icon{filter:drop-shadow(0 0 4px rgba(255,51,102,.5))}.stat-pill.coins{color:var(--color-warning);box-shadow:0 0 10px #ffaa001a}.stat-pill.coins .coin-icon{filter:drop-shadow(0 0 4px rgba(255,170,0,.5))}.stat-value{color:var(--color-text)}@media(max-width:480px){.top-nav{padding:10px 16px}.stat-pill{padding:4px 8px;font-size:.85rem}.custom-icon{width:16px;height:16px}}.theme-toggle{width:36px;height:36px;border-radius:var(--radius-full);background:#8b5cf614;border:1px solid var(--color-border);display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all var(--transition-base);color:var(--color-text-subtle);flex-shrink:0}.theme-toggle svg{width:16px;height:16px;transition:transform var(--transition-fast),color var(--transition-fast)}.theme-toggle:hover{color:var(--color-accent);border-color:#06b6d466;background:#06b6d41a;box-shadow:0 0 12px #06b6d433}.theme-toggle:hover svg{transform:rotate(15deg)}.theme-toggle:active{transform:scale(.92)}.pwa-prompt{position:fixed;bottom:calc(var(--bottom-nav-height, 80px) + var(--space-md));left:50%;transform:translate(-50%);z-index:900;display:flex;align-items:center;gap:var(--space-md);background:var(--color-glass);backdrop-filter:var(--blur-lg);-webkit-backdrop-filter:var(--blur-lg);border:1px solid var(--color-border-glow);border-radius:var(--radius-xl);padding:var(--space-md) var(--space-lg);box-shadow:var(--shadow-glow),var(--shadow-lg);width:min(420px,calc(100vw - 2rem));animation:slideUp .35s cubic-bezier(.4,0,.2,1)}.pwa-prompt-icon{width:40px;height:40px;border-radius:var(--radius-md);background:var(--color-primary-dim);border:1px solid var(--color-border-glow);display:flex;align-items:center;justify-content:center;flex-shrink:0;color:var(--color-primary)}.pwa-prompt-icon svg{width:20px;height:20px}.pwa-prompt-text{flex:1;display:flex;flex-direction:column;gap:2px}.pwa-prompt-text strong{font-size:var(--font-size-sm);font-weight:700;color:var(--color-text)}.pwa-prompt-text span{font-size:.72rem;color:var(--color-text-muted)}.pwa-prompt-actions{display:flex;align-items:center;gap:var(--space-sm);flex-shrink:0}.pwa-btn-install{background:linear-gradient(135deg,var(--color-primary),#6D28D9);color:#fff;border:none;border-radius:var(--radius-full);padding:var(--space-sm) var(--space-md);font-size:var(--font-size-sm);font-weight:600;cursor:pointer;transition:all var(--transition-base);white-space:nowrap}.pwa-btn-install:hover{box-shadow:0 0 16px var(--color-primary-glow);transform:translateY(-1px)}.pwa-btn-dismiss{background:none;border:none;color:var(--color-text-muted);cursor:pointer;font-size:.9rem;padding:var(--space-xs);line-height:1;transition:color var(--transition-fast)}.pwa-btn-dismiss:hover{color:var(--color-text)}.fin-disclaimer{position:fixed;bottom:0;left:0;right:0;z-index:1050;padding:var(--space-md);animation:slideUp .4s cubic-bezier(.4,0,.2,1)}.fin-disclaimer-inner{display:flex;align-items:flex-start;gap:var(--space-md);background:#f59e0b14;border:1px solid rgba(245,158,11,.35);border-radius:var(--radius-lg);padding:var(--space-md) var(--space-lg);backdrop-filter:var(--blur-md);-webkit-backdrop-filter:var(--blur-md);max-width:640px;margin:0 auto;box-shadow:0 -4px 24px #0000004d}.fin-disclaimer-icon{flex-shrink:0;width:24px;height:24px;color:#f59e0b;margin-top:2px}.fin-disclaimer-icon svg{width:24px;height:24px}.fin-disclaimer-content{flex:1;min-width:0}.fin-disclaimer-content strong{display:block;font-size:var(--font-size-sm);font-weight:700;color:#f59e0b;margin-bottom:var(--space-xs)}.fin-disclaimer-content p{font-size:.72rem;color:var(--color-text-muted);line-height:1.5;margin:0}.fin-disclaimer-content strong+p strong{color:var(--color-text)}.fin-disclaimer-close{flex-shrink:0;background:#f59e0b26;border:1px solid rgba(245,158,11,.3);border-radius:var(--radius-full);color:#f59e0b;font-size:.72rem;font-weight:600;padding:var(--space-xs) var(--space-md);cursor:pointer;transition:all var(--transition-fast);white-space:nowrap;align-self:center}.fin-disclaimer-close:hover{background:#f59e0b40}.offline-indicator{position:fixed;top:0;left:0;right:0;background-color:var(--warning-color, #F59E0B);color:#000;z-index:9999;padding:8px 16px;display:flex;justify-content:center;align-items:center;box-shadow:0 4px 12px #0003;animation:slideDown .3s ease-out}.offline-content{display:flex;align-items:center;gap:8px;font-size:.85rem;font-weight:600;text-align:center}@keyframes slideDown{0%{transform:translateY(-100%)}to{transform:translateY(0)}}body:has(.offline-indicator) .top-nav{margin-top:36px}