:root{
  --bg:#08111f;
  --bg2:#0f1b2e;
  --card:#101b2f;
  --card2:#0c1628;
  --line:#22314d;
  --text:#e8f1ff;
  --muted:#9fb0ca;
  --accent:#38bdf8;
  --accent2:#22c55e;
  --orange:#f59e0b;
  --red:#f97316;
}
*{box-sizing:border-box}
body{
  margin:0;
  color:var(--text);
  font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  background:
    radial-gradient(circle at 12% 0%, rgba(56,189,248,.28), transparent 34%),
    radial-gradient(circle at 88% 12%, rgba(34,197,94,.18), transparent 34%),
    linear-gradient(180deg,var(--bg),#060b14 100%);
  min-height:100vh;
}
.hero{
  display:grid;
  grid-template-columns:1.5fr .9fr;
  gap:24px;
  padding:38px 42px 24px;
  align-items:center;
}
.eyebrow{
  color:var(--accent);
  font-weight:800;
  letter-spacing:.08em;
  text-transform:uppercase;
  font-size:12px;
  margin-bottom:12px;
}
h1{
  font-size:46px;
  line-height:1.05;
  margin:0 0 14px;
  letter-spacing:-.04em;
}
h2{margin:0 0 8px;font-size:20px}
p{color:var(--muted);line-height:1.55;margin:0}
.hero-card{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:12px;
  padding:18px;
  border:1px solid var(--line);
  border-radius:24px;
  background:rgba(16,27,47,.72);
  box-shadow:0 24px 80px rgba(0,0,0,.28);
}
.metric{
  background:rgba(8,17,31,.75);
  border:1px solid var(--line);
  border-radius:18px;
  padding:16px;
}
.metric span{
  display:block;
  font-size:30px;
  font-weight:900;
}
.metric label{
  display:block;
  color:var(--muted);
  font-size:13px;
  margin-top:4px;
}
.container{
  max-width:1280px;
  margin:0 auto;
  padding:12px 24px 42px;
}
.panel{
  background:rgba(16,27,47,.82);
  border:1px solid var(--line);
  border-radius:24px;
  padding:20px;
  margin-bottom:18px;
  box-shadow:0 16px 60px rgba(0,0,0,.22);
  backdrop-filter: blur(8px);
}
.panel-head{
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:18px;
  margin-bottom:16px;
}
.scenario-grid{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:12px;
}
.prompt-grid{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:12px;
}
.card-option{
  border:1px solid var(--line);
  background:linear-gradient(180deg,rgba(12,22,40,.96),rgba(8,17,31,.94));
  border-radius:18px;
  padding:15px;
  cursor:pointer;
  min-height:132px;
  transition:.16s ease;
  position:relative;
}
.card-option:hover{
  transform:translateY(-2px);
  border-color:rgba(56,189,248,.66);
}
.card-option.active{
  border-color:var(--accent);
  box-shadow:0 0 0 2px rgba(56,189,248,.18),0 14px 40px rgba(56,189,248,.08);
}
.card-option.active:after{
  content:"✓";
  position:absolute;
  right:12px;
  top:12px;
  width:24px;
  height:24px;
  border-radius:999px;
  background:var(--accent2);
  color:#052e16;
  display:grid;
  place-items:center;
  font-weight:900;
}
.card-option .title{
  font-weight:900;
  margin-bottom:8px;
  padding-right:28px;
}
.card-option .desc{
  color:var(--muted);
  font-size:13px;
  line-height:1.45;
}
.card-option .tag{
  display:inline-flex;
  margin-top:12px;
  padding:5px 9px;
  border-radius:999px;
  background:rgba(56,189,248,.12);
  color:#b9eaff;
  font-size:12px;
  border:1px solid rgba(56,189,248,.24);
}
.controls{
  display:grid;
  grid-template-columns:.7fr 1.3fr;
  gap:18px;
  align-items:end;
}
.control-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:12px;
}
label{
  color:var(--muted);
  font-size:13px;
  font-weight:700;
}
select,textarea{
  width:100%;
  margin-top:7px;
  border:1px solid var(--line);
  background:#071020;
  color:var(--text);
  border-radius:14px;
  padding:12px;
  outline:none;
}
.button-row{
  grid-column:1 / -1;
  display:flex;
  gap:10px;
  flex-wrap:wrap;
  margin-top:4px;
}
button{
  border:0;
  border-radius:14px;
  padding:12px 16px;
  color:white;
  font-weight:900;
  cursor:pointer;
  transition:.16s ease;
}
button:hover{transform:translateY(-1px)}
.primary{
  background:linear-gradient(135deg,#0ea5e9,#2563eb);
  min-width:190px;
}
.secondary{
  background:#17243b;
  border:1px solid var(--line);
}
.ghost{
  background:transparent;
  border:1px solid var(--line);
  color:var(--muted);
}
.output-panel textarea{
  min-height:540px;
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  line-height:1.55;
  resize:vertical;
}
.badge{
  border:1px solid rgba(34,197,94,.35);
  background:rgba(34,197,94,.12);
  color:#bbf7d0;
  padding:8px 12px;
  border-radius:999px;
  font-weight:800;
  white-space:nowrap;
}
.tips{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:12px;
}
.tips div{
  border:1px solid var(--line);
  background:rgba(8,17,31,.58);
  border-radius:16px;
  padding:14px;
  color:var(--muted);
}
footer{
  color:var(--muted);
  text-align:center;
  padding:20px;
  border-top:1px solid var(--line);
}
@media(max-width:1080px){
  .hero{grid-template-columns:1fr;padding:28px 20px 14px}
  .scenario-grid,.prompt-grid{grid-template-columns:repeat(2,1fr)}
  .controls,.control-grid{grid-template-columns:1fr}
  h1{font-size:36px}
}
@media(max-width:620px){
  .scenario-grid,.prompt-grid,.tips,.hero-card{grid-template-columns:1fr}
  .container{padding:8px 14px 32px}
  .panel{padding:16px;border-radius:18px}
}