:root {
  --bg: #0b1020;
  --card: #141b2f;
  --border: #2a3555;
  --text: #e8edf8;
  --muted: #8b95ad;
  --accent: #3b82f6;
  --accent2: #22d3ee;
  --danger: #f87171;
  --ok: #4ade80;
  --radius: 12px;
  font-family: system-ui, -apple-system, Segoe UI, sans-serif;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  background: radial-gradient(ellipse at top, #1a2540, var(--bg));
  color: var(--text);
}

#app {
  max-width: 720px;
  margin: 0 auto;
  padding: 24px 16px 48px;
}

.panel { display: block; }
.brand h1 { margin: 0 0 4px; font-size: 1.75rem; }
.brand p { margin: 0 0 24px; color: var(--muted); }

.form, .convert-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  display: grid;
  gap: 14px;
}

label { display: grid; gap: 6px; font-size: 0.9rem; color: var(--muted); }
input, select {
  background: #0f1528;
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  padding: 10px 12px;
  font-size: 1rem;
}

.btn {
  border: none;
  border-radius: 8px;
  padding: 10px 16px;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  text-align: center;
  display: inline-block;
}
.btn.primary { background: linear-gradient(135deg, var(--accent), #6366f1); color: white; }
.btn.success { background: #166534; color: #dcfce7; }
.btn.ghost { background: transparent; border: 1px solid var(--border); color: var(--text); }

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 16px;
}
.topbar h1 { margin: 0; font-size: 1.4rem; }
.topbar p { margin: 4px 0 0; color: var(--muted); font-size: 0.85rem; }

.stats {
  display: flex;
  gap: 12px;
  margin-bottom: 16px;
}
.stat {
  flex: 1;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px;
}
.stat strong { display: block; font-size: 1.25rem; }
.stat span { color: var(--muted); font-size: 0.8rem; }

.file-drop span {
  display: block;
  padding: 24px;
  border: 1px dashed var(--border);
  border-radius: 8px;
  text-align: center;
  color: var(--muted);
}
.file-drop input { margin-top: 8px; }

.status { font-size: 0.9rem; color: var(--accent2); }
.error { color: var(--danger); font-size: 0.9rem; }

.jobs { margin-top: 24px; }
.jobs h2 { font-size: 1rem; color: var(--muted); margin-bottom: 10px; }
.jobs-list { display: grid; gap: 8px; }
.job-row {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 12px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
}
.job-row .ok { color: var(--ok); }
.job-row .fail { color: var(--danger); }

@media (min-width: 600px) {
  #app { padding-top: 40px; }
}