:root {
  --bg: #1A0F0A;
  --bg-card: #241A12;
  --text: #E0D0C0;
  --text-sec: #A89080;
  --text-muted: #5A4838;
  --primary: #E17055;
  --secondary: #FAB1A0;
  --accent: #0984E3;
  --border: rgba(225,112,85,0.06);
  --radius: 12px;
  --font: 'Inter',system-ui,sans-serif;
  --mono: 'JetBrains Mono',monospace;
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
body{font-family:var(--font);background:var(--bg);color:var(--text);min-height:100vh}

.header{display:flex;align-items:center;justify-content:space-between;padding:8px 14px;background:var(--bg-card);border-bottom:1px solid var(--border)}
.header h1{font-size:.88rem;font-weight:700;color:var(--primary)}
.header-right{display:flex;gap:4px}

.btn{padding:4px 10px;border:1px solid var(--border);border-radius:8px;background:transparent;color:var(--text-sec);font-family:var(--font);font-size:.66rem;cursor:pointer;transition:.2s}
.btn:hover{border-color:var(--primary);color:var(--primary)}
.btn.sm{font-size:.58rem;padding:2px 6px}
.btn.primary{background:var(--primary);color:#fff;border:none;font-weight:600}

.app{max-width:1000px;margin:0 auto;padding:12px}

.layout{display:grid;grid-template-columns:260px 1fr;gap:8px}

.controls{display:flex;flex-direction:column;gap:6px}

.card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:10px}
.card h2{font-size:.56rem;font-weight:600;color:var(--text-muted);text-transform:uppercase;letter-spacing:.04em;margin-bottom:6px}

.label{font-size:.5rem;color:var(--text-muted);text-transform:uppercase;letter-spacing:.03em;display:block;margin-bottom:1px}

.input{width:100%;padding:4px 8px;border:1px solid var(--border);border-radius:6px;background:rgba(255,255,255,.02);color:var(--text);font-family:var(--font);font-size:.68rem}
.input:focus{outline:none;border-color:var(--primary)}
.input.num{font-family:var(--mono);font-size:.66rem;text-align:center}

.param-grid{display:grid;grid-template-columns:1fr 1fr;gap:4px}
.preset-row{display:flex;gap:3px;flex-wrap:wrap}

.check{font-size:.62rem;color:var(--text-sec);display:flex;align-items:center;gap:4px;cursor:pointer;margin-bottom:2px}

.output{font-family:var(--mono);font-size:.64rem;color:var(--primary);background:rgba(225,112,85,.06);padding:6px 10px;border-radius:6px;display:block;word-break:break-all}

/* Preview */
.preview-area{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:8px;display:flex;align-items:center;justify-content:center;min-height:400px}
.canvas-wrap{position:relative;border:2px dashed rgba(225,112,85,.15);border-radius:6px;overflow:hidden}

#preview{display:block;background:var(--bg)}

@media(max-width:600px){.layout{grid-template-columns:1fr}}