:root {
  --bg: #0B0F1A;
  --surface: rgba(255,255,255,0.05);
  --border: rgba(255,255,255,0.1);
  --purple: #A855F7;
  --blue: #3B82F6;
  --text: #E5E7EB;
  --muted: #94A3B8;
}

body{
margin:0;
font-family:"Segoe UI",sans-serif;
background:var(--bg);
color:var(--text);
display:flex;
justify-content:center;
padding:40px 20px;
}

.container{
width:100%;
max-width:720px;
background:var(--surface);
border:1px solid var(--border);
border-radius:16px;
padding:40px;
}

.step{
display:none;
}

.step.active{
display:block;
}

label{
display:block;
margin-top:16px;
font-size:0.85rem;
}

input,textarea{
width:100%;
padding:12px;
margin-top:6px;
border-radius:8px;
border:1px solid var(--border);
background:#111827;
color:var(--text);
}

textarea{
min-height:100px;
}

.progress{
height:6px;
background:rgba(255,255,255,0.1);
border-radius:10px;
margin:20px 0;
}

.progress-bar{
height:6px;
width:20%;
background:linear-gradient(to right,var(--purple),var(--blue));
border-radius:10px;
transition:width 0.3s;
}

.navigation{
display:flex;
justify-content:space-between;
margin-top:30px;
}

.navigation button{
padding:12px 18px;
border:none;
border-radius:10px;
background:linear-gradient(to right,var(--purple),var(--blue));
color:white;
cursor:pointer;
}

.step-indicator{
display:flex;
justify-content:space-between;
margin-bottom:20px;
}

.step-item{
text-align:center;
flex:1;
}

.step-circle{
width:34px;
height:34px;
border-radius:50%;
background:var(--surface);
border:1px solid var(--border);
display:flex;
align-items:center;
justify-content:center;
margin:0 auto;
}

.step-item.active .step-circle{
background:linear-gradient(to right,var(--purple),var(--blue));
border:none;
}

.checkbox{
display:flex;
align-items:center;
gap:10px;
margin-top:10px;
}

.review-box{
background:var(--surface);
border:1px solid var(--border);
padding:20px;
border-radius:12px;
}

.review-item{
margin-bottom:12px;
}

.brief-section{
margin-top:30px;
}

#projectBrief{
width:100%;
min-height:220px;
background:#111827;
border:1px solid var(--border);
border-radius:10px;
padding:15px;
color:var(--text);
font-family:monospace;
font-size:0.85rem;
margin-top:10px;
}

.btn-copy{
margin-top:10px;
padding:10px 16px;
border:none;
border-radius:8px;
background:linear-gradient(to right,var(--purple),var(--blue));
color:white;
cursor:pointer;
font-size:0.85rem;
}