:root {
  --ink: #1a1a1a;
  --muted: #6b6b6b;
  --rule: #ddd8cf;
  --paper: #faf8f4;
  --accent: #2f4858;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 16px/1.55 "Frank Ruhl Libre", Georgia, serif;
}
main { max-width: 640px; margin: 0 auto; padding: 32px 20px 64px; }
header { border-bottom: 1px solid var(--rule); padding-bottom: 18px; margin-bottom: 26px; }
h1 { margin: 0; font-size: 34px; letter-spacing: .01em; }
.sub { margin: 6px 0 0; color: var(--muted); }
.form { display: grid; gap: 14px; }
label { display: grid; gap: 6px; font-size: 14px; color: var(--muted); }
.row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.check { display: flex; align-items: center; gap: 8px; }
input, select {
  font: inherit; font-size: 16px; padding: 9px 11px;
  border: 1px solid var(--rule); border-radius: 6px; background: #fff; color: var(--ink);
}
input[type=checkbox] { width: auto; padding: 0; }
input:disabled { background: #f1eee9; color: var(--muted); }
button {
  font: inherit; font-size: 17px; padding: 12px; margin-top: 6px;
  border: 0; border-radius: 6px; background: var(--accent); color: #fff; cursor: pointer;
}
button:disabled { background: #9aa8b0; cursor: default; }
.progress { margin: 24px 0 8px; }
.track { height: 4px; background: var(--rule); border-radius: 2px; overflow: hidden; }
#bar { height: 100%; width: 0; background: var(--accent); transition: width .2s; }
#status { margin: 8px 0 0; font-size: 13px; color: var(--muted); min-height: 1.2em; }
.log { max-height: 320px; overflow-y: auto; font-size: 13px; }
.log .line { padding: 5px 0; border-bottom: 1px solid var(--rule); }
.log .block { color: #8c2f2f; }
.log .warn { color: #8a6a1f; }
.log .info { color: var(--muted); }
.log .ok { color: #2c6b45; }
footer { margin-top: 30px; padding-top: 16px; border-top: 1px solid var(--rule); font-size: 13px; color: var(--muted); }