:root{
  --bg:#f8fafc; --panel:#fff; --text:#0f172a; --muted:#64748b;
  --primary:#7c3aed; --secondary:#06b6d4;
  --border:#e2e8f0; --radius:16px;
  --shadow:0 6px 24px rgba(2,6,23,.08);
  --shadow-soft:0 2px 10px rgba(2,6,23,.08);
}
@media (prefers-color-scheme: dark){
  :root{ --bg:#0b1220; --panel:#0f172a; --text:#e2e8f0; --muted:#94a3b8; --border:#1f2a44;
    --shadow:0 6px 24px rgba(2,6,23,.5); --shadow-soft:0 2px 10px rgba(2,6,23,.6);
  }
}
*{box-sizing:border-box}
html,body{height:100%}
body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Arial;background:var(--bg);color:var(--text)}
.hero{background:linear-gradient(135deg,rgba(124,58,237,.14),rgba(6,182,212,.14));border-bottom:1px solid var(--border)}
.hero-inner{max-width:1100px;margin:0 auto;padding:28px 16px;display:flex;gap:16px;align-items:center;justify-content:space-between;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:12px}
.logo-img{width:40px;height:40px;border-radius:12px;box-shadow:var(--shadow-soft)}
.brand h1{font-size:22px;line-height:1.2;margin:0}
.hero .tag{font-size:13px;color:var(--muted)}
.page{max-width:1100px;margin:0 auto;padding:16px}
.wrap{padding:16px;display:grid;gap:16px;background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow)}
.grid{display:grid;gap:12px}
.row{display:flex;gap:12px;flex-wrap:wrap;align-items:flex-end}
.section-title{font-weight:600;margin:6px 4px 0;font-size:14px;color:var(--muted)}
.card{border:1px solid var(--border);border-radius:14px;padding:12px;background:var(--panel);box-shadow:var(--shadow-soft)}
.muted{color:var(--muted);font-size:12px}
button{border:1px solid var(--border);background:#fff;border-radius:999px;padding:8px 14px;cursor:pointer;transition:.2s;box-shadow:var(--shadow-soft)}
button:hover{transform:translateY(-1px)} button:active{transform:translateY(0)}
.cta{background:linear-gradient(135deg,#7c3aed,#06b6d4);color:#fff;border-color:transparent}
select,input[type=number],textarea,input[type=email]{border:1px solid var(--border);border-radius:10px;padding:8px 10px;background:var(--panel);color:var(--text);outline:none;transition:box-shadow .2s,border-color .2s;box-shadow:inset 0 1px 0 rgba(2,6,23,.02)}
select:focus,input:focus,textarea:focus{border-color:#7c3aed;box-shadow:0 0 0 3px rgba(124,58,237,.15)}
.badge{display:inline-block;padding:4px 10px;border-radius:999px;background:rgba(124,58,237,.08);color:#7c3aed;border:1px solid rgba(124,58,237,.15)}
.rtl{direction:rtl}.ltr{direction:ltr}
.canvas-wrap{position:relative;border:1px dashed var(--border);border-radius:var(--radius);padding:12px;background:var(--panel);box-shadow:var(--shadow-soft)}
canvas{border-radius:12px;display:block;max-width:100%;background:#fff}
.toolbar{display:flex;gap:8px;flex-wrap:wrap}
.kbd{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:12px;border:1px solid var(--border);border-radius:6px;padding:2px 6px;background:var(--panel);color:var(--muted)}
.footer{max-width:1100px;margin:20px auto;padding:12px 16px;color:var(--muted);font-size:12px;display:flex;justify-content:space-between}
.link{color:#7c3aed;text-decoration:none}.link:hover{text-decoration:underline}

/* Responsive tweaks for mobile/tablet */
@media (max-width: 900px){
  .hero-inner{gap:12px}
  .wrap{padding:12px}
  .row{align-items:stretch}
  .card{padding:10px}
}
@media (max-width: 700px){
  .row > *{flex:1 1 100%}
  button, select, input[type=number], textarea{width:100%}
  .brand h1{font-size:18px}
  .hero .tag{font-size:12px}
  .canvas-wrap{padding:8px}
}
@media (max-width: 480px){
  .brand{gap:8px}
  .logo-img{width:32px;height:32px;border-radius:10px}
  .wrap{gap:12px}
  .section-title{margin-top:2px}
}