*,:before,:after{box-sizing:border-box;margin:0;padding:0}:root{--sidebar-width:240px;--glass-bg:#0a0e1cb8;--glass-border:#ffffff14;--text:#e4e8f1;--text-dim:#8892a8;--accent:#4ade80;--accent-glow:#4ade8040;--danger:#f87171;--radius:10px;--font:"Inter", -apple-system, BlinkMacSystemFont, sans-serif}html,body{width:100%;height:100%;font-family:var(--font);color:var(--text);background:#060a14;overflow:hidden}#canvas{width:100%;height:100%;display:block;position:fixed;top:0;left:0}#sidebar{width:var(--sidebar-width);background:var(--glass-bg);-webkit-backdrop-filter:blur(24px);border:1px solid var(--glass-border);z-index:100;scrollbar-width:thin;scrollbar-color:#ffffff1a transparent;border-radius:16px;flex-direction:column;gap:6px;padding:20px 16px;animation:.5s cubic-bezier(.16,1,.3,1) forwards slideIn;display:flex;position:fixed;top:16px;bottom:16px;left:16px;overflow-y:auto}@keyframes slideIn{0%{opacity:0;transform:translate(-30px)}to{opacity:1;transform:translate(0)}}.sidebar-title{letter-spacing:-.02em;align-items:center;gap:8px;font-size:1.25rem;font-weight:700;display:flex}.logo-icon{font-size:1.4rem}.sidebar-subtitle{text-transform:uppercase;letter-spacing:.12em;color:var(--text-dim);margin-bottom:4px;font-size:.7rem}.divider{background:linear-gradient(90deg, transparent, var(--glass-border), transparent);height:1px;margin:6px 0}.section-label{text-transform:uppercase;letter-spacing:.14em;color:var(--text-dim);margin-bottom:2px;font-size:.65rem}.tool-grid{grid-template-columns:1fr 1fr;gap:6px;display:grid}.tool-btn{border:1px solid var(--glass-border);border-radius:var(--radius);color:var(--text);cursor:pointer;font-family:var(--font);background:#ffffff08;flex-direction:column;justify-content:center;align-items:center;gap:4px;padding:10px 4px;transition:all .2s;display:flex;position:relative;overflow:hidden}.tool-btn:before{content:"";border-radius:var(--radius);opacity:0;background:radial-gradient(circle at center, var(--tool-color), transparent 70%);transition:opacity .2s;position:absolute;inset:0}.tool-btn:hover{border-color:var(--tool-color);background:#ffffff0f;transform:translateY(-1px)}.tool-btn:hover:before{opacity:.1}.tool-btn.active{border-color:var(--tool-color);box-shadow:0 0 12px -2px var(--tool-color), inset 0 0 20px -8px var(--tool-color)}.tool-btn.active:before{opacity:.15}.tool-icon{font-size:1.3rem}.tool-name{text-transform:uppercase;letter-spacing:.06em;opacity:.8;font-size:.65rem;font-weight:600}.slider-group{flex-direction:column;gap:4px;display:flex}.slider-group label{color:var(--text-dim);justify-content:space-between;font-size:.75rem;display:flex}.slider-value{color:var(--text);font-weight:600}input[type=range]{appearance:none;cursor:pointer;background:#ffffff14;border-radius:3px;outline:none;width:100%;height:6px}input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;background:var(--accent);width:16px;height:16px;box-shadow:0 0 8px var(--accent-glow);cursor:grab;border-radius:50%;transition:transform .15s}input[type=range]::-webkit-slider-thumb:hover{transform:scale(1.2)}input[type=range]::-moz-range-thumb{background:var(--accent);cursor:grab;border:none;border-radius:50%;width:16px;height:16px}.history-row{gap:8px;display:flex}.history-btn{border:1px solid var(--glass-border);border-radius:var(--radius);color:var(--text);font-family:var(--font);cursor:pointer;background:#ffffff0a;flex:1;padding:8px;font-size:.75rem;font-weight:600;transition:all .2s}.history-btn:hover:not(.disabled){border-color:var(--accent);background:#4ade8014}.history-btn.disabled{opacity:.3;cursor:default;pointer-events:none}.hint{color:var(--text-dim);text-align:center;margin-top:auto;padding-top:8px;font-size:.6rem;line-height:1.6}.hint b{color:var(--text);font-weight:600}.reset-btn{border-radius:var(--radius);width:100%;color:var(--danger);font-family:var(--font);cursor:pointer;letter-spacing:.02em;background:#f871710f;border:1px solid #f871714d;padding:10px;font-size:.8rem;font-weight:600;transition:all .25s}.reset-btn:hover{border-color:var(--danger);background:#f8717126;transform:translateY(-1px);box-shadow:0 0 16px -4px #f871714d}.reset-btn:active{transform:translateY(0)}@media (width<=640px){:root{--sidebar-width:180px}#sidebar{border-radius:16px 16px 0 0;flex-direction:column;width:100%;height:auto;max-height:45vh;padding:14px 12px;inset:auto 0 0}.tool-grid{grid-template-columns:repeat(4,1fr)}}