*{margin:0;padding:0;box-sizing:border-box}:root{--bg-primary:#1a1a1a;--bg-secondary:#2a2a2a;--bg-tertiary:#3a3a3a;--text-primary:#e0e0e0;--text-secondary:#b0b0b0;--accent:#007acc;--accent-hover:#0066aa;--success:#28a745;--error:#dc3545}body,html{height:100%;margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,sans-serif;background:var(--bg-primary);color:var(--text-primary);line-height:1.6;overflow-x:hidden}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}button{padding:.75rem 1.5rem;background:var(--accent);color:white;border:none;border-radius:4px;cursor:pointer;font-size:.9rem;font-weight:500;transition:background .2s}button:hover{background:var(--accent-hover)}button:disabled{background:var(--bg-tertiary);cursor:not-allowed}input{padding:.75rem;background:var(--bg-primary);border:1px solid var(--bg-tertiary);border-radius:4px;color:var(--text-primary);font-size:.9rem}input:focus{outline:none;border-color:var(--accent)}