:root{--text:#374151;--text-light:#6b7280;--text-h:#111827;--bg:#f9fafb;--card-bg:#fff;--border:#e5e7eb;--accent:#6366f1;--accent-hover:#4f46e5;--accent-light:#6366f11a;--danger:#ef4444;--success:#22c55e;--sans:system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;--radius:8px;font:16px/1.5 var(--sans);color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}@media (prefers-color-scheme:dark){:root{--text:#d1d5db;--text-light:#9ca3af;--text-h:#f9fafb;--bg:#111827;--card-bg:#1f2937;--border:#374151;--accent:#818cf8;--accent-hover:#6366f1;--accent-light:#818cf826}}*,:before,:after{box-sizing:border-box}body{min-height:100dvh;margin:0}#root{flex-direction:column;min-height:100dvh;display:flex}h1,h2,h3{color:var(--text-h);margin:0 0 .5em}h1{font-size:clamp(1.8rem,5vw,2.5rem)}h2{font-size:clamp(1.3rem,3vw,1.75rem)}h3{font-size:clamp(1rem,2vw,1.25rem)}p{margin:0 0 .75em}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}.container{width:100%;max-width:960px;margin:0 auto;padding:0 1rem}.flex{gap:1rem;display:flex}.flex-wrap{flex-wrap:wrap}.flex-col{flex-direction:column}.items-center{align-items:center}.justify-center{justify-content:center}.justify-between{justify-content:space-between}.grid{grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:1rem;display:grid}.btn{font:inherit;border:1px solid var(--border);border-radius:var(--radius);background:var(--card-bg);color:var(--text-h);cursor:pointer;justify-content:center;align-items:center;gap:.5rem;min-height:44px;padding:.625rem 1.25rem;font-weight:500;text-decoration:none;transition:background .15s,border-color .15s;display:inline-flex}.btn:hover{background:var(--accent-light);text-decoration:none}.btn-primary{background:var(--accent);color:#fff;border-color:var(--accent)}.btn-primary:hover{background:var(--accent-hover)}.btn-danger{border-color:var(--danger);color:var(--danger)}.btn-danger:hover{background:#ef44441a}.btn-small{min-height:36px;padding:.375rem .75rem;font-size:.875rem}.card{background:var(--card-bg);border:1px solid var(--border);border-radius:var(--radius);padding:1.25rem}input,select{font:inherit;border:1px solid var(--border);border-radius:var(--radius);background:var(--card-bg);color:var(--text-h);width:100%;min-height:44px;padding:.5rem .75rem}input:focus{outline:2px solid var(--accent);outline-offset:-1px}table{border-collapse:collapse;width:100%}th,td{text-align:left;border-bottom:1px solid var(--border);padding:.75rem}th{color:var(--text-h);font-size:.875rem;font-weight:600}.mt-1{margin-top:.5rem}.mt-2{margin-top:1rem}.mt-3{margin-top:1.5rem}.mt-4{margin-top:2rem}.mb-1{margin-bottom:.5rem}.mb-2{margin-bottom:1rem}.mb-3{margin-bottom:1.5rem}.p-2{padding:1rem}.text-center{text-align:center}.text-small{font-size:.875rem}.text-muted{color:var(--text-light)}.text-danger{color:var(--danger)}.landing{text-align:center;flex-direction:column;flex:1;justify-content:center;align-items:center;padding:2rem 1rem;display:flex}.landing h1{margin-bottom:.25em}.landing .tagline{color:var(--text-light);max-width:480px;margin-bottom:2rem;font-size:clamp(1rem,2.5vw,1.25rem)}.landing .preview{text-align:left;max-width:400px;margin-top:3rem}.landing .preview ol{padding-left:1.25rem;line-height:2}.dashboard{width:100%;max-width:640px;margin:0 auto;padding:1.5rem 1rem}.dashboard header{align-items:center;gap:1rem;margin-bottom:2rem;display:flex}.dashboard .avatar{border-radius:50%;width:56px;height:56px}.nav-bar{border-bottom:1px solid var(--border);flex-wrap:wrap;gap:.5rem;padding:1rem;display:flex}.nav-bar a{border-radius:var(--radius);color:var(--text);padding:.5rem 1rem;font-weight:500;text-decoration:none}.nav-bar a:hover,.nav-bar a.active{background:var(--accent-light);color:var(--accent)}.friends-page{width:100%;max-width:640px;margin:0 auto;padding:1.5rem 1rem}.friend-row{border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;padding:.75rem 0;display:flex}.friend-row:last-child{border-bottom:none}.leaderboard .current-user{background:var(--accent-light)}.sr-only{clip:rect(0, 0, 0, 0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}