:root{--bg:#f8fafc;--text:#111827;--card-bg:#fff;--border:#e5e7eb;--secondary-text:#6b7280}body.dark{--bg:#0a0a0a;--text:#fafafa;--card-bg:#171717;--border:#262626;--secondary-text:#a3a3a3}*{box-sizing:border-box}html{scroll-behavior:smooth}body{background:var(--bg);color:var(--text);margin:0;padding:0;font-family:Inter,system-ui,sans-serif;transition:background .3s,color .3s}a{color:inherit;text-decoration:none}button{font-family:inherit}input,textarea,select{color:var(--text);font-family:inherit}input::placeholder{color:var(--secondary-text)}::selection{background:#6366f14d}::-webkit-scrollbar{width:8px}::-webkit-scrollbar-track{background:0 0}::-webkit-scrollbar-thumb{background:#525252;border-radius:999px}::-webkit-scrollbar-thumb:hover{background:#737373}