:root{--bg: #0b0f13;--panel: #0c1216;--muted: #9aa6b2;--accent: #4aa3ff;--accent-2: #7b61ff;--shadow-1: 0 6px 18px rgba(2,6,23,.6);--shadow-2: 0 10px 30px rgba(2,6,23,.75);--width: min(65vw, 65vh)}*,*:before,*:after{box-sizing:border-box}body{font-family:Inter,ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial;margin:0;padding:0;background:linear-gradient(180deg,#06070a 0%,var(--bg) 100%);color:#e6eef6;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}.app{display:grid;grid-template-columns:320px 1fr;gap:24px;align-items:start;padding:28px;max-width:1200px;max-height:90vh;margin:24px auto;overflow:auto}.config{background:linear-gradient(180deg,#ffffff05,#ffffff03);border-radius:12px;padding:20px;box-shadow:var(--shadow-2);border:1px solid rgba(255,255,255,.03);position:sticky;top:20px}.config-title{margin:0 0 6px;font-size:1.1rem;color:#fff}.hint{margin:0 0 14px;color:var(--muted);font-size:.9rem}.control-row{display:flex;flex-direction:column;gap:8px;margin-bottom:12px}.control-row label{font-size:.9rem;color:var(--muted)}canvas{display:block;margin:0 auto;width:var(--width);height:var(--width);background:linear-gradient(180deg,#ffffff03,#fff0);border-radius:10px;box-shadow:var(--shadow-1);border:1px solid rgba(255,255,255,.02)}.main{display:flex;flex-direction:column;gap:18px}.title-card{background:linear-gradient(180deg,#ffffff05,#ffffff03);border-radius:12px;padding:18px 20px;box-shadow:var(--shadow-2);border:1px solid rgba(255,255,255,.03);position:sticky;top:20px;z-index:40}.title-card h1{margin:0;font-size:1.4rem}select,input[type=number],input,textarea{padding:10px 12px;border-radius:8px;border:1px solid rgba(255,255,255,.06);background:var(--panel);color:#e6eef6;outline:none;-webkit-appearance:none;appearance:none}select:focus,input[type=number]:focus,input:focus,textarea:focus{box-shadow:0 4px 18px #4aa3ff1f;border-color:#4aa3ffe6}input::placeholder,textarea::placeholder{color:#e6eef680}select::-ms-expand{display:none}select{background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23a8cfff' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'><path d='M6 9l6 6 6-6'/></svg>");background-repeat:no-repeat;background-position:right 12px center;background-size:18px 18px;padding-right:40px}input[type=number]::-webkit-outer-spin-button,input[type=number]::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}input[type=number]{-moz-appearance:textfield;appearance:textfield}.number-input{display:flex;align-items:center;gap:8px}.number-input input[type=number]{flex:1 1 auto}.stepper{display:flex;flex-direction:column;gap:6px}.step{width:34px;height:28px;display:inline-flex;align-items:center;justify-content:center;background:#ffffff05;color:#e6eef6;border:1px solid rgba(255,255,255,.04);border-radius:6px;cursor:pointer;font-weight:600}.step:active{transform:translateY(1px)}.primary{background:linear-gradient(180deg,#1f87ff,#155fbe);color:#fff}button:focus,input:focus,select:focus,textarea:focus{outline:3px solid rgba(74,163,255,.16);outline-offset:2px}button{padding:10px 14px;font-size:.95rem;color:#e9f3ff;background:linear-gradient(180deg,var(--accent),var(--accent-2));border:none;border-radius:8px;cursor:pointer;box-shadow:0 6px 18px #3b82f638,inset 0 -6px 20px #0000001f;transition:transform .12s ease,box-shadow .12s ease,opacity .12s ease}button:hover{transform:translateY(-2px)}.primary{background:linear-gradient(180deg,#2b9bff,#1e7fe6)}.secondary{background:linear-gradient(180deg,#ffffff05,#ffffff03);color:var(--muted);border:1px solid rgba(255,255,255,.03);box-shadow:0 6px 18px #02061773}.actions{display:flex;gap:10px;justify-content:space-between}@media(max-width:880px){.app{grid-template-columns:1fr;padding:0}.config{position:relative;top:0;width:100%;order:-1}.canvas-wrap{display:flex;justify-content:center}:root{--width: min(92vw, 92vh)}.title-card{top:0;position:sticky;border-radius:0;margin:0 0 12px;padding:14px 18px;z-index:60}.main{padding:12px 16px 20px}}