:root{--primary:#4361ee;--primary-dark:#3a56d4;--secondary:#7209b7;--success:#06d6a0;--light:#f8f9fa;--dark:#212529;--gray:#6c757d;--light-gray:#e9ecef;--border-radius:12px;--box-shadow:0 8px 25px rgba(0, 0, 0, 0.1);--transition:all 0.3s ease}*{margin:0;padding:0;box-sizing:border-box}body{font-family:'Segoe UI',Tahoma,Geneva,Verdana,sans-serif;display:flex;flex-direction:column;align-items:center;min-height:100vh;background:linear-gradient(135deg,#f5f7fa 0,#e4edf5 100%);color:var(--dark);padding:20px}.container{background-color:#fff;padding:30px 40px;border-radius:var(--border-radius);box-shadow:var(--box-shadow);text-align:center;width:100%;max-width:950px;margin-bottom:20px;position:relative;overflow:hidden}.container::before{content:'';position:absolute;top:0;left:0;right:0;height:5px;background:linear-gradient(90deg,var(--primary),var(--secondary))}h1{color:var(--primary);margin-bottom:25px;font-size:2.2em;display:flex;align-items:center;justify-content:center;gap:12px}.picker-area{display:flex;flex-wrap:wrap;gap:40px;justify-content:center;align-items:center;margin-bottom:40px}.wheel-container{position:relative;width:300px;height:300px;user-select:none}canvas{cursor:crosshair;border-radius:50%;box-shadow:0 5px 15px rgba(0,0,0,.1)}.preview-info{flex:1;min-width:280px;display:flex;flex-direction:column;gap:20px}.preview-box{width:100%;height:120px;border-radius:12px;box-shadow:inset 0 0 20px rgba(0,0,0,.1);display:flex;flex-direction:column;align-items:center;justify-content:center;border:4px solid #fff;outline:1px solid var(--light-gray);transition:background-color .1s}.preview-hex{font-family:monospace;font-size:2em;font-weight:700;letter-spacing:1px}.quick-actions{display:flex;gap:10px}.action-btn{flex:1;padding:10px;border:1px solid var(--light-gray);background:#fff;border-radius:8px;cursor:pointer;font-weight:600;color:var(--gray);transition:var(--transition);display:flex;align-items:center;justify-content:center;gap:5px}.action-btn:hover{border-color:var(--primary);color:var(--primary);background:#f8fbff}.controls-grid{display:grid;grid-template-columns:1fr 1.5fr;gap:30px;text-align:left}@media (max-width:768px){.controls-grid{grid-template-columns:1fr}.picker-area{flex-direction:column;gap:20px}}.input-group{margin-bottom:20px}.input-group label{display:block;margin-bottom:8px;font-weight:600;color:var(--gray);font-size:.9em}.hex-input-wrapper{position:relative;display:flex;align-items:center}.hex-prefix{position:absolute;left:15px;font-weight:700;color:var(--gray)}input[type=text]{width:100%;padding:12px 15px 12px 30px;border:1px solid var(--light-gray);border-radius:8px;font-family:monospace;font-size:1.1em;transition:var(--transition)}input[type=text]:focus{border-color:var(--primary);outline:0;box-shadow:0 0 0 3px rgba(67,97,238,.15)}.slider-container{margin-bottom:15px;display:flex;align-items:center;gap:15px}.slider-label{width:30px;font-weight:700}.slider-label.r{color:#ef476f}.slider-label.g{color:#06d6a0}.slider-label.b{color:#118ab2}input[type=range]{flex-grow:1;height:6px;border-radius:5px;appearance:none;outline:0;cursor:pointer;background:#e9ecef}input[type=range]::-webkit-slider-thumb{appearance:none;width:18px;height:18px;border-radius:50%;background:#fff;border:2px solid var(--gray);box-shadow:0 2px 5px rgba(0,0,0,.2)}.slider-val{width:45px;text-align:center;font-family:monospace;font-weight:700;background:var(--light);padding:4px;border-radius:4px}.data-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:15px}.data-card{background:#f8f9fa;border:1px solid var(--light-gray);border-radius:10px;padding:15px;text-align:left;cursor:pointer;transition:var(--transition)}.data-card:hover{border-color:var(--primary);background:#fff;transform:translateY(-2px);box-shadow:0 5px 15px rgba(0,0,0,.05)}.card-label{font-size:.8em;color:var(--gray);margin-bottom:5px;display:flex;justify-content:space-between}.card-value{font-family:monospace;font-weight:600;color:var(--dark);font-size:1.05em;word-break:break-all}.palette-section{margin-top:40px;text-align:left}.palette-section h3{font-size:1.2em;margin-bottom:15px;color:var(--dark);display:flex;align-items:center;gap:10px}.palette-row{display:flex;height:60px;border-radius:12px;overflow:hidden;margin-bottom:20px;box-shadow:0 4px 10px rgba(0,0,0,.05)}.swatch{flex:1;height:100%;cursor:pointer;transition:flex .2s;display:flex;align-items:center;justify-content:center;font-size:0}.swatch:hover{flex:2;font-size:.8em;font-family:monospace;font-weight:700;text-shadow:0 1px 3px rgba(0,0,0,.3)}.history-bar{display:flex;gap:10px;flex-wrap:wrap;margin-top:10px}.history-dot{width:30px;height:30px;border-radius:50%;cursor:pointer;border:2px solid #fff;box-shadow:0 2px 5px rgba(0,0,0,.1);transition:transform .2s}.history-dot:hover{transform:scale(1.2)}.status{position:fixed;bottom:20px;left:50%;transform:translateX(-50%);padding:10px 20px;background:rgba(33,37,41,.9);color:#fff;border-radius:50px;font-size:.9em;opacity:0;transition:opacity .3s;pointer-events:none;z-index:100}.status.show{opacity:1}footer{margin-top:20px;color:var(--gray);font-size:.9em;text-align:center;padding:15px}