* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: linear-gradient(135deg, #0f172a, #111827);
  color: #e5e7eb;
}
.app { max-width: 1050px; margin: 0 auto; padding: 32px 16px; }
.hero {
  padding: 34px;
  border-radius: 24px;
  background: linear-gradient(135deg, #2563eb, #7c3aed);
  box-shadow: 0 20px 50px rgba(0,0,0,.25);
}
.eyebrow { text-transform: uppercase; letter-spacing: 2px; font-size: 12px; opacity: .9; }
h1 { margin: 8px 0; font-size: clamp(32px, 5vw, 54px); }
.sub { margin: 0; font-size: 18px; color: #eef2ff; }
.card {
  margin-top: 20px;
  padding: 24px;
  border-radius: 20px;
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.12);
  box-shadow: 0 10px 30px rgba(0,0,0,.2);
}
.card h2 { margin: 0 0 16px; }
.grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
label { display: flex; flex-direction: column; gap: 8px; color: #cbd5e1; font-size: 14px; }
input, select {
  width: 100%; padding: 12px 14px; border: 1px solid rgba(255,255,255,.2);
  border-radius: 12px; background: #0b1220; color: #fff; outline: none;
}
.uploader { text-align: center; cursor: pointer; border: 2px dashed rgba(147,197,253,.65); }
.uploader.dragover { background: rgba(37, 99, 235, .2); }
.uploadIcon { width: 64px; height: 64px; margin: 0 auto 10px; display: grid; place-items: center; border-radius: 50%; background: #2563eb; font-size: 30px; }
button {
  border: 0; border-radius: 12px; padding: 13px 18px; cursor: pointer;
  background: #22c55e; color: #052e16; font-weight: 700;
}
#chooseBtn { background: #60a5fa; color: #071326; margin-top: 8px; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 18px; }
.ghost { background: transparent; color: #e5e7eb; border: 1px solid rgba(255,255,255,.25); }
.outputHead { display: flex; justify-content: space-between; align-items: center; gap: 12px; }
#count { background: rgba(96,165,250,.18); padding: 8px 12px; border-radius: 999px; color: #bfdbfe; }
pre {
  margin: 0; max-height: 520px; overflow: auto; white-space: pre-wrap;
  background: #020617; border-radius: 16px; padding: 18px; color: #bbf7d0;
  border: 1px solid rgba(255,255,255,.1);
}
@media (max-width: 850px) { .grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .grid { grid-template-columns: 1fr; } .hero { padding: 24px; } }