:root{
  --bg:#0b0d10;
  --card:#12151b;
  --text:#eef2ff;
  --muted:#a7b0c0;
  --line:#242a35;
  --accent:#7aa2ff;
}

*{ box-sizing:border-box; }
html,body{ height:100%; }
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial;
  background: var(--bg);
  color: var(--text);
}

.wrap{
  max-width: 900px;
  margin: 0 auto;
  padding: 18px;
}

h1{ margin: 0 0 6px; font-size: 22px; }
.sub{ margin: 0 0 18px; color: var(--muted); font-size: 13px; }

.card{
  border:1px solid var(--line);
  background: var(--card);
  border-radius: 14px;
  padding: 16px;
}

.card h2{
  margin: 0 0 12px;
  font-size: 16px;
}

label{
  display:block;
  margin: 10px 0;
  color: var(--muted);
  font-size: 12px;
}
input, select{
  width: 100%;
  margin-top: 6px;
  padding: 10px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: #0f1217;
  color: var(--text);
  outline: none;
}

button{
  margin-top: 12px;
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid rgba(122,162,255,0.4);
  background: rgba(122,162,255,0.14);
  color: var(--text);
  font-weight: 800;
  cursor: pointer;
}

.result{
  margin-top: 14px;
  padding: 12px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: #0f1217;
  font-weight: 900;
}

.ad-slot{
  margin-top: 16px;
  border:1px dashed rgba(122,162,255,0.35);
  border-radius: 14px;
  padding: 12px;
}

.footer{
  margin-top: 18px;
  color: var(--muted);
  font-size: 12px;
}