:root{--foreground:#171717;--background:#ffffff;--accent:#2563eb;--accent-hover:#1d4ed8;--border:#e5e7eb;--muted:#6b7280}@media (prefers-color-scheme:dark){:root{--foreground:#ededed;--background:#0a0a0a;--accent:#3b82f6;--accent-hover:#60a5fa;--border:#374151;--muted:#9ca3af}}*{margin:0;padding:0;box-sizing:border-box}body,html{max-width:100vw;overflow-x:hidden}body{color:var(--foreground);background:var(--background);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}.container{max-width:640px;margin:0 auto;padding:2rem 1rem}.card{border:1px solid var(--border);border-radius:12px;padding:1.5rem;margin-bottom:1rem}.btn{display:inline-block;background:var(--accent);color:white;padding:.75rem 1.5rem;border-radius:8px;border:none;font-size:1rem;cursor:pointer;transition:background .2s}.btn:hover{background:var(--accent-hover)}.btn:disabled{opacity:.5;cursor:not-allowed}.status{margin-top:1rem;padding:1rem;border-radius:8px;font-size:.9rem}.status.success{background:#dcfce7;color:#166534}.status.error{background:#fef2f2;color:#991b1b}.status.info{background:#eff6ff;color:#1e40af}