*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--color-bg: #0d0d0d;--color-surface: #1a1a1a;--color-surface-hover: #252525;--color-border: #333;--color-text: #f5f5f5;--color-text-secondary: #999;--color-accent: #a855f7;--color-accent-dim: #7c3aed;--color-gold: #fbbf24;--color-silver: #94a3b8;--color-bronze: #d97706;--font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--font-mono: "SF Mono", Monaco, "Cascadia Code", monospace}html{font-size:16px}body{font-family:var(--font-sans);background-color:var(--color-bg);color:var(--color-text);line-height:1.6;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}.app{min-height:100vh;display:flex;flex-direction:column}.header{background:linear-gradient(135deg,var(--color-accent-dim) 0%,var(--color-accent) 100%);padding:2rem;text-align:center}.header-content{max-width:800px;margin:0 auto}.logo{font-size:2.5rem;font-weight:700;color:#fff;display:flex;align-items:center;justify-content:center;gap:.5rem}.logo-icon{font-size:2rem}.tagline{color:#ffffffe6;font-size:1.1rem;margin-top:.5rem}.main{flex:1;max-width:1000px;margin:0 auto;padding:2rem;width:100%}.hero{text-align:center;padding:3rem 0;border-bottom:1px solid var(--color-border);margin-bottom:2rem}.hero h2{font-size:2rem;margin-bottom:1rem;background:linear-gradient(135deg,var(--color-accent) 0%,var(--color-gold) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.hero p{color:var(--color-text-secondary);max-width:600px;margin:0 auto 1.5rem}.cta{display:flex;align-items:center;justify-content:center;gap:1rem;flex-wrap:wrap}.command{background:var(--color-surface);border:1px solid var(--color-border);padding:.75rem 1.25rem;border-radius:8px;font-family:var(--font-mono);font-size:1rem;color:var(--color-accent)}.cta-text{color:var(--color-text-secondary)}.leaderboard-section{margin-bottom:3rem}.leaderboard-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:1.5rem;flex-wrap:wrap;gap:1rem}.leaderboard-header h3{font-size:1.5rem}.period-selector{display:flex;gap:.5rem}.period-btn{background:var(--color-surface);border:1px solid var(--color-border);color:var(--color-text-secondary);padding:.5rem 1rem;border-radius:6px;font-size:.875rem;cursor:pointer;transition:all .2s}.period-btn:hover{background:var(--color-surface-hover);color:var(--color-text)}.period-btn.active{background:var(--color-accent);border-color:var(--color-accent);color:#fff}.loading,.error,.empty-state{text-align:center;padding:3rem;color:var(--color-text-secondary)}.spinner{width:40px;height:40px;border:3px solid var(--color-border);border-top-color:var(--color-accent);border-radius:50%;margin:0 auto 1rem;animation:spin 1s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.error button{margin-top:1rem;background:var(--color-accent);border:none;color:#fff;padding:.5rem 1.5rem;border-radius:6px;cursor:pointer}.leaderboard-table{width:100%;border-collapse:collapse;background:var(--color-surface);border-radius:12px;overflow:hidden}.leaderboard-table th{background:var(--color-surface-hover);padding:1rem;text-align:left;font-weight:600;font-size:.875rem;color:var(--color-text-secondary);text-transform:uppercase;letter-spacing:.05em}.leaderboard-table td{padding:1rem;border-top:1px solid var(--color-border)}.leaderboard-table tr:hover td{background:var(--color-surface-hover)}.leaderboard-table tr.top-rank td{background:#a855f71a}.rank-cell{width:60px}.rank{font-weight:600;font-size:1rem}.user-cell{font-weight:500}.username{color:var(--color-accent)}.stat-cell{text-align:right}.stat-cell .value{font-weight:600;font-size:1.125rem;display:block}.stat-cell .label{font-size:.75rem;color:var(--color-text-secondary);text-transform:uppercase}.stat-cell.tokens .value{color:var(--color-gold)}.stat-cell.messages .value{color:var(--color-accent)}.stat-cell.sessions .value{color:var(--color-silver)}.how-it-works{padding:2rem 0;border-top:1px solid var(--color-border)}.how-it-works h3{font-size:1.5rem;margin-bottom:1.5rem;text-align:center}.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1.5rem}.step{background:var(--color-surface);border:1px solid var(--color-border);border-radius:12px;padding:1.5rem;text-align:center}.step-number{width:40px;height:40px;background:var(--color-accent);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;margin:0 auto 1rem}.step h4{margin-bottom:.5rem}.step p{color:var(--color-text-secondary);font-size:.875rem}.footer{text-align:center;padding:2rem;border-top:1px solid var(--color-border);color:var(--color-text-secondary)}.footer-links{margin-top:.5rem}.footer-links a{color:var(--color-accent);text-decoration:none}.footer-links a:hover{text-decoration:underline}@media (max-width: 640px){.logo{font-size:1.75rem}.hero h2{font-size:1.5rem}.leaderboard-header{flex-direction:column;align-items:stretch}.period-selector{justify-content:center}.leaderboard-table th,.leaderboard-table td{padding:.75rem .5rem;font-size:.875rem}.stat-cell .value{font-size:1rem}}