*,:before,:after{box-sizing:border-box;margin:0;padding:0}:root{--bg:#0f0f0f;--surface:#1a1a1a;--surface2:#242424;--border:#333;--accent:#7c3aed;--accent-hover:#6d28d9;--text:#e5e5e5;--text-muted:#888;--danger:#ef4444;--success:#22c55e}html,body{background:var(--bg);height:100%;color:var(--text);font-family:Segoe UI,system-ui,-apple-system,sans-serif;font-size:16px;line-height:1.5}#root{flex-direction:column;min-height:100vh;display:flex}button{cursor:pointer;font-family:inherit}a{color:var(--accent);text-decoration:none}.upload-zone{border:2px dashed var(--border);background:var(--surface);cursor:pointer;-webkit-user-select:none;user-select:none;border-radius:12px;outline:none;flex-direction:column;justify-content:center;align-items:center;gap:.5rem;padding:3rem 2rem;transition:border-color .2s,background .2s;display:flex}.upload-zone:hover,.upload-zone:focus{border-color:var(--accent);background:var(--surface2)}.upload-zone--disabled{opacity:.5;cursor:not-allowed}.upload-icon{font-size:3rem;line-height:1}.upload-title{color:var(--text);font-size:1.1rem;font-weight:600}.upload-subtitle{color:var(--text-muted);font-size:.85rem}.emulator-wrapper{border:1px solid var(--border);background:#000;border-radius:8px;width:100%;max-width:800px;margin:0 auto;display:none;overflow:hidden}.emulator-wrapper--visible{display:block}.emulator-canvas{aspect-ratio:4/3;width:100%}.status-bar{background:var(--surface);border:1px solid var(--border);border-radius:8px;align-items:center;gap:.75rem;padding:.75rem 1rem;font-size:.9rem;display:flex}.status-bar--error{border-color:var(--danger);background:#ef444414}.status-bar--running{border-color:var(--success);background:#22c55e14}.status-dot{border-radius:50%;flex-shrink:0;width:8px;height:8px}.status-dot--green{background:var(--success)}.status-dot--red{background:var(--danger)}.status-spinner{border:2px solid var(--border);border-top-color:var(--accent);border-radius:50%;flex-shrink:0;width:14px;height:14px;animation:.7s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.status-btn{border:1px solid var(--border);background:var(--surface2);color:var(--text);border-radius:6px;margin-left:auto;padding:.25rem .75rem;font-size:.8rem;transition:background .2s}.status-btn:hover{background:var(--accent);border-color:var(--accent)}.app{flex-direction:column;max-width:900px;min-height:100vh;margin:0 auto;padding:0 1.5rem;display:flex}.app-header{text-align:center;padding:2rem 0 1.5rem}.app-logo{justify-content:center;align-items:center;gap:.5rem;margin-bottom:.5rem;display:flex}.app-logo-icon{font-size:2rem}.app-logo-text{letter-spacing:-.5px;background:linear-gradient(135deg,#7c3aed,#a78bfa);-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text;font-size:1.75rem;font-weight:700}.app-tagline{color:var(--text-muted);font-size:.9rem}.app-main{flex-direction:column;flex:1;gap:1rem;padding-bottom:2rem;display:flex}.controls-hint{background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:1.25rem 1.5rem}.controls-hint h2{color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em;margin-bottom:1rem;font-size:.95rem;font-weight:600}.controls-grid{grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:.5rem;display:grid}.control-item{color:var(--text-muted);align-items:center;gap:.5rem;font-size:.85rem;display:flex}kbd{background:var(--surface2);border:1px solid var(--border);color:var(--text);white-space:nowrap;border-radius:4px;padding:.15rem .4rem;font-family:monospace;font-size:.8rem;display:inline-block}.app-footer{border-top:1px solid var(--border);text-align:center;color:var(--text-muted);padding:1rem 0;font-size:.8rem}.text-muted{color:var(--text-muted);opacity:.7}