:root{
  --bg:#0b1220; --text:#e6eef8; --muted:#a4b1c1; --card:#111a2e; --accent:#22c55e; --accent2:#0ea5e9; --border:#1f2a44;

  --btn-blue:#dff0ff;
  --btn-blue-strong:#cfe8ff;
  --btn-blue-hover:#cfe8ff;
  --btn-blue-strong-hover:#bfe0ff;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--bg);color:var(--text);font-family:Inter,ui-sans-serif,system-ui,Segoe UI,Roboto,Arial}
a{color:inherit;text-decoration:none}
.container{max-width:1200px;margin:0 auto;padding:24px}
.header{display:flex;gap:16px;align-items:center;justify-content:space-between;margin-bottom:16px}
.brand{display:flex;gap:12px;align-items:center}
.brand img{width:40px;height:40px}
.brand h1{font-size:20px;margin:0}
.tag{font-size:12px;padding:4px 8px;background:linear-gradient(90deg,var(--accent),var(--accent2));border-radius:999px;color:#041314;margin-left:8px}
.searchbar{display:flex;gap:12px;flex-wrap:wrap;align-items:center}
.searchbar input{flex:1;min-width:220px;padding:12px 14px;border:1px solid var(--border);border-radius:12px;background:#0e1830;color:var(--text);outline:none}
.searchbar select{padding:12px;border:1px solid var(--border);border-radius:12px;background:#0e1830;color:var(--text)}
.btn{padding:10px 14px;border:1px solid var(--border);border-radius:12px;background:var(--btn-blue);cursor:pointer;color:#000}
.btn.primary{background:var(--btn-blue-strong);color:#000;border:1px solid var(--border)}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px;margin-top:18px}
.card{background:var(--card);border:1px solid var(--border);border-radius:16px;overflow:hidden;display:flex;flex-direction:column}
.card-header{display:flex;align-items:center;gap:10px;padding:12px 14px;border-bottom:1px solid var(--border)}
.card-header h3{margin:0;font-size:16px}
.card-body{padding:14px;display:flex;flex-direction:column;gap:10px}
.card-body textarea,.card-body input,.card-body select{width:100%;padding:10px 12px;border-radius:12px;border:1px solid var(--border);background:#0f1a34;color:var(--text);outline:none}
.card-body .result{background:#091023;border:1px dashed var(--border);padding:10px;border-radius:12px;white-space:pre-wrap;min-height:38px}
.footer{margin-top:28px;color:var(--muted);font-size:12px;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}
.kicker{display:flex;gap:8px;align-items:center}
.category-tabs{display:flex;gap:8px;flex-wrap:wrap;margin-top:8px}
.tab{padding:8px 12px;border:1px solid var(--border);border-radius:999px;background:#0e1830;cursor:pointer;color:var(--muted)}
.tab.active{background:linear-gradient(90deg,var(--accent),var(--accent2));color:#041314;border:none}
.hidden{display:none}
hr.sep{border:0;border-top:1px solid var(--border);margin:12px 0}
.small{font-size:12px;color:var(--muted)}
.badge{font-size:11px;background:#0e1830;border:1px solid var(--border);padding:2px 8px;border-radius:999px;color:var(--muted)}
.notice{padding:10px;border:1px dashed var(--border);border-radius:12px;background:#0e1830;color:var(--muted)}
input[type="number"]::-webkit-outer-spin-button,input[type="number"]::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}

/* Force all buttons to light-blue scheme */
button,
input[type=button],
input[type=submit]{
  background: var(--btn-blue);
  color: #000;
  border: 1px solid var(--border);
  padding: 10px 14px;
  border-radius: 12px;
  cursor: pointer;
}
button:hover,
input[type=button]:hover,
input[type=submit]:hover{
  background: var(--btn-blue-hover);
}