:root{--bg-base:#111;--bg-surface:#181818;--bg-card:#1f1f1f;--bg-elevated:#2a2a2a;--accent:#1d9e75;--accent-dim:#0f6e56;--accent-glow:#1d9e7526;--text-primary:#fff;--text-secondary:#aaa;--text-muted:#555;--border:#ffffff12;--danger:#e24b4a;--amber:#ef9f27;background:var(--bg-base);color:var(--text-primary);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}*{box-sizing:border-box}body{background:var(--bg-base);min-width:320px;min-height:100vh;margin:0}button,input{font:inherit}