:root {
  --ink: #1e1e1e;
  --paper: #f6f5f2;
  --card: #ffffff;
  --rule: #e3e0da;
  --muted: #6c6c6c;
  --accent: #2757d6;
  --error: #c22f3d;
}
@media (prefers-color-scheme: dark) {
  :root {
    --ink: #ececec;
    --paper: #161616;
    --card: #1f1f1f;
    --rule: #333;
    --muted: #9a9a9a;
    --accent: #6f96ff;
    --error: #ff7a86;
  }
}

* { box-sizing: border-box; }
body {
  margin: 0;
  padding: 32px 16px 64px;
  background: var(--paper);
  color: var(--ink);
  font: 15px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, sans-serif;
}
.card {
  max-width: 680px;
  margin: 0 auto;
  background: var(--card);
  border: 1px solid var(--rule);
  border-radius: 12px;
  padding: 28px 32px 36px;
}
.center { text-align: center; }
.wordmark {
  font: 600 13px/1 ui-monospace, Menlo, Consolas, monospace;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--accent);
  padding-bottom: 14px;
  border-bottom: 1px solid var(--rule);
  margin-bottom: 18px;
}
h1 { font-size: 22px; margin: 0 0 8px; }
h2 { font-size: 15px; margin: 28px 0 10px; text-transform: uppercase; letter-spacing: .06em; }
.muted { color: var(--muted); }
.small { font-size: 13px; font-weight: 400; text-transform: none; letter-spacing: 0; }

label { display: block; margin: 0 0 12px; font-size: 14px; }
input, select, textarea {
  display: block;
  width: 100%;
  margin-top: 4px;
  padding: 8px 10px;
  font: inherit;
  color: inherit;
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: 8px;
}
input:focus, select:focus, textarea:focus { outline: 2px solid var(--accent); outline-offset: -1px; }
fieldset { border: 1px solid var(--rule); border-radius: 8px; margin: 0 0 12px; }
legend { font-size: 13px; color: var(--muted); padding: 0 6px; }
.check { display: flex; align-items: center; gap: 8px; margin: 6px 0; }
.check input { width: auto; margin: 0; }

.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 0 20px; }
@media (max-width: 560px) { .grid2 { grid-template-columns: 1fr; } }

#tracks { list-style: none; margin: 0; padding: 0; }
.track {
  border: 1px solid var(--rule);
  border-radius: 10px;
  padding: 12px 14px;
  margin-bottom: 10px;
}
.trackHead { display: flex; gap: 10px; align-items: center; }
.trackHead .title { flex: 1; margin: 0; }
.ord {
  font: 600 13px/1 ui-monospace, Menlo, Consolas, monospace;
  color: var(--muted);
  min-width: 22px;
}
.rowBtns { display: flex; gap: 4px; }
.trackBody { display: grid; grid-template-columns: 140px 1fr; gap: 8px; margin-top: 8px; }
.trackBody .file { grid-column: 1 / -1; }
@media (max-width: 560px) { .trackBody { grid-template-columns: 1fr; } }

button {
  font: inherit;
  cursor: pointer;
  border-radius: 8px;
  border: 1px solid var(--rule);
}
button[type=submit] {
  display: block;
  width: 100%;
  margin-top: 20px;
  padding: 12px;
  font-weight: 600;
  color: #fff;
  background: var(--accent);
  border: none;
}
button[type=submit]:disabled { opacity: .5; cursor: default; }
.ghost {
  background: none;
  color: var(--muted);
  padding: 6px 10px;
}
.ghost:hover { color: var(--ink); }

.bar {
  height: 10px;
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: 6px;
  overflow: hidden;
  margin-top: 20px;
}
#bar { height: 100%; width: 0; background: var(--accent); transition: width .3s; }
.error { color: var(--error); font-size: 14px; }