:root{--bg:#0d0d1a;--surface:#13131f;--surface-2:#1a1a2e;--surface-3:#20203a;--border:#2a2a45;--border-2:#35355a;--text:#e8e8f0;--text-muted:#88a;--text-dim:#5a5a7a;--accent:#a855f7;--accent-2:#7c3aed;--accent-3:#c084fc;--accent-dim:#a855f714;--success:#22c55e;--success-dim:#22c55e1f;--error:#ef4444;--error-dim:#ef44441f;--warning:#f59e0b;--info:#38bdf8;--info-dim:#38bdf814;--level-beginner:#22c55e;--level-intermediate:#3b82f6;--level-advanced:#f59e0b;--level-expert:#ef4444;--font-sans:"Segoe UI", system-ui, -apple-system, sans-serif;--font-mono:"Cascadia Code", "Fira Code", "JetBrains Mono", monospace;--font-size-sm:.82rem;--font-size-base:.95rem;--font-size-lg:1.15rem;--font-size-xl:1.5rem;--font-size-2xl:2rem;--radius-sm:8px;--radius-md:12px;--radius-lg:16px;--radius-xl:20px;--transition-fast:.18s ease;--transition-base:.25s ease;--transition-slow:.35s ease}*,:before,:after{box-sizing:border-box;margin:0;padding:0}html{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-size:16px}body{font-family:var(--font-sans);background:var(--bg);color:var(--text);background-image:radial-gradient(ellipse 80% 60% at 50% -10%, color-mix(in srgb, var(--accent) 12%, transparent) 0%, transparent 60%), radial-gradient(ellipse 50% 40% at 90% 80%, color-mix(in srgb, var(--accent-2) 6%, transparent) 0%, transparent 50%);min-height:100vh;line-height:1.6}a{color:var(--accent-3);transition:color var(--transition-fast);text-decoration:none}a:hover{color:var(--accent)}code{font-family:var(--font-mono);background:var(--surface-2);border:1px solid var(--border);color:var(--accent-3);overflow-wrap:anywhere;word-break:break-word;white-space:pre-wrap;border-radius:5px;padding:.1em .4em;font-size:.88em}.container{width:100%;max-width:860px;margin:0 auto;padding:1.5rem 1rem 3rem}.card{background:var(--surface);border:1px solid 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transparent)}.nav-link-logout{color:var(--error)!important}.nav-link-logout:hover{background:var(--error-dim)!important}.level-beginner{--level-color:var(--level-beginner)}.level-intermediate{--level-color:var(--level-intermediate)}.level-advanced{--level-color:var(--level-advanced)}.level-expert{--level-color:var(--level-expert)}[class*=level-].badge{background:color-mix(in srgb, var(--level-color) 18%, transparent);color:var(--level-color)}@keyframes fadeIn{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}@keyframes slideIn{0%{opacity:0;transform:translate(-6px)}to{opacity:1;transform:translate(0)}}@media (width<=768px){.card{padding:1.25rem}.grid-2,.grid-3{grid-template-columns:1fr}.app-header{flex-direction:column;align-items:flex-start}.app-nav-bar{border-radius:var(--radius-md);flex-wrap:wrap;width:100%;padding:.5rem}.nav-link{flex:1;justify-content:center}}@media (width<=480px){html{font-size:14px}.container{padding:1rem .75rem 2rem}}.pwa-footer{z-index:50;padding:.35rem .75rem calc(.35rem + env(safe-area-inset-bottom,0px));background:color-mix(in srgb, var(--surface) 85%, transparent);-webkit-backdrop-filter:blur(10px);border-top:1px solid var(--border);color:var(--text-dim);flex-wrap:wrap;justify-content:center;align-items:center;gap:.5rem;font-size:.72rem;display:flex;position:fixed;bottom:0;left:0;right:0}.pwa-version{letter-spacing:.02em}.pwa-footer button{border-radius:var(--radius-sm);cursor:pointer;transition:background var(--transition-fast), transform var(--transition-fast);color:#fff;background:var(--accent-2);border:none;padding:.3rem .7rem;font-size:.72rem;font-weight:600}.pwa-footer button:hover{background:var(--accent)}.pwa-footer button:active{transform:scale(.97)}.pwa-footer button[hidden]{display:none}body{padding-bottom:34px}