:root{
  --bg:#0b0b0c;
  --card:#121317;
  --text:#e8eaee;
  --muted:#c9ced6;
  --accent:#00ff33;
  --border:1px solid rgba(255,255,255,.08);
  --radius:16px;
  --control-block:58px;
}

*{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif}
a{color:inherit;text-decoration:none}
button{cursor:pointer}

.header{
  position:sticky; top:0; z-index:40;
  background:linear-gradient(0deg, rgba(11,11,12,0) 0%, rgba(11,11,12,.85) 30%);
  backdrop-filter: blur(6px);
  padding:16px 20px; display:flex; justify-content:flex-start;
}
.brand{letter-spacing:.12em;font-weight:800;font-size:32px;line-height:1}
.brand span{color:var(--accent)}

.home-page .container{max-width:1200px;margin:0 auto;padding:40px 24px}

.home-page .grid{
  margin-top:80px;
  display:grid;
  grid-template-columns: repeat(3, minmax(260px,1fr));
  gap:36px;
}
@media(max-width:900px){.home-page .grid{grid-template-columns:1fr}}

.home-page .card{
  position:relative;
  border:var(--border);
  background:var(--card);
  border-radius:20px;
  padding:26px;
  display:flex; flex-direction:column; gap:8px; min-height:160px;
  box-shadow:0 8px 24px rgba(0,255,51,.15);
  transition:transform .2s, box-shadow .2s, border-color .2s;
}
.home-page .card:hover{
  transform:translateY(-4px);
  box-shadow:0 12px 28px rgba(0,255,51,.25);
  border-color:var(--accent);
}
.home-page .big{font-size:28px;font-weight:700}
.home-page .muted{opacity:.82}
.home-page .icon{width:38px;height:38px;margin-bottom:6px;color:var(--accent)}

.data-page .center-stage{
  min-height:calc(100vh - 90px);
  display:grid; place-items:center;
  padding:28px 20px;
}
.data-page .backbar{
  position:fixed; top:16px; right:20px; left:auto; z-index:50;
  width:auto; margin:0;
  display:flex; justify-content:flex-end;
}
.data-page .btn.back-btn{
  display:inline-flex; align-items:center; gap:8px;
  padding:8px 12px; border-radius:12px;
  background:#0f1115; border:1px solid rgba(0,255,51,.35);
  color:var(--text);
  transition:transform .15s, border-color .15s;
}
.data-page .btn.back-btn:hover{transform:translateY(-1px); border-color:var(--accent)}

.data-page .twocol{
  width:min(860px, 100%);
  margin:0 auto;
  display:grid;
  grid-template-columns: 1fr 1fr;
  grid-auto-rows: 1fr;
  gap:20px;
  align-items:stretch;
}
@media (max-width:980px){ .data-page .twocol{ grid-template-columns:1fr; max-width:640px; } }

.data-page .card{
  background:var(--card);
  border:var(--border);
  border-radius:18px;
  padding:16px 16px 18px;
  height:100%;
  display:flex; flex-direction:column;
}
.data-page .card h2{
  margin:0 0 10px 0;
  font-size:22px; font-weight:800; letter-spacing:.02em;
}

.data-page .form-row{margin-bottom:10px}
.data-page .form-row.two{display:grid; grid-template-columns:1fr auto; gap:10px; align-items:end}
.data-page .form-row.two.tight{grid-template-columns: 1fr auto;}
.data-page .inline label{display:block; font-size:13px; color:var(--muted); margin-bottom:6px}

.data-page .spacer-col{min-width:120px; min-height:var(--control-block)}

.data-page label{display:block; font-size:13px; color:var(--muted); margin-bottom:6px}
.data-page input[type="file"],
.data-page input[type="number"]{
  width:100%;
  border:1px solid rgba(255,255,255,.12);
  background:#0c0d12; color:#e9edf3;
  padding:9px 12px; border-radius:12px; outline:none;
}
.data-page input:focus{border-color:rgba(0,255,51,.5); box-shadow:0 0 0 3px rgba(0,255,51,.16)}
.data-page .parts-input{width:120px; height:38px; line-height:38px; padding:0 12px}

.data-page .btn{
  display:inline-flex; align-items:center; justify-content:center;
  gap:8px; padding:9px 14px; border-radius:12px;
  background:#12161c; color:#e8eaee;
  border:1px solid rgba(0,255,51,.35);
  transition:transform .15s, border-color .15s;
}
.data-page .btn:hover{transform:translateY(-1px); border-color:var(--accent)}
.data-page .btn-primary{font-weight:600}
.data-page .btn-eq{width:96px}

.data-page .status{
  margin-top:auto;
  padding-top:8px;
  text-align:center;
  color:var(--accent);
  font-size:13px;
  min-height:28px;
}
.data-page .link{color:var(--accent); text-decoration:underline}

.footer{opacity:.6;font-size:12px;margin-top:24px;text-align:center}

.progress{height:8px;border-radius:999px;overflow:hidden;background:#0f1013;border:1px solid rgba(255,255,255,.08);margin-top:10px}
.progress .bar{display:block;height:100%;background:var(--accent);width:0%}