:root {
  color-scheme: dark;
  --bg: #12141a;
  --fg: #e8eaef;
  --muted: #9aa3b2;
  --accent: #6cb6ff;
  --panel: #1c2029;
  --ok: #7dcea0;
  --err: #f08080;
  font-family: "Segoe UI", system-ui, sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--fg);
}

main {
  max-width: 36rem;
  margin: 0 auto;
  padding: 2rem 1.25rem 3rem;
}

h1 {
  font-size: 1.75rem;
  font-weight: 650;
  letter-spacing: -0.02em;
  margin: 0 0 0.35rem;
}

.lede { color: var(--muted); margin: 0 0 1.5rem; }

.steps {
  margin: 0 0 1.5rem;
  padding-left: 1.25rem;
  color: var(--muted);
  line-height: 1.5;
}

.steps strong { color: var(--fg); }
.steps code {
  font-size: 0.9em;
  color: var(--accent);
}

.panel {
  background: var(--panel);
  border-radius: 10px;
  padding: 1rem 1.1rem;
  margin-bottom: 1rem;
}

.row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.85rem;
}

button, .file {
  appearance: none;
  border: 0;
  border-radius: 8px;
  padding: 0.55rem 0.9rem;
  font: inherit;
  cursor: pointer;
  background: var(--accent);
  color: #0b1020;
  font-weight: 600;
}

button.secondary {
  background: #2a3140;
  color: var(--fg);
}

button:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.file {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.file input { max-width: 12rem; }

.muted { color: var(--muted); font-size: 0.92rem; }

progress {
  width: 100%;
  height: 0.55rem;
  margin: 0.25rem 0 0.75rem;
}

#log {
  margin: 0;
  min-height: 6rem;
  max-height: 14rem;
  overflow: auto;
  font: 0.82rem/1.45 ui-monospace, Consolas, monospace;
  color: var(--muted);
  white-space: pre-wrap;
}

#log .ok { color: var(--ok); }
#log .err { color: var(--err); }

.ver-row {
  display: flex;
  gap: 0.75rem;
  margin-bottom: 0.4rem;
  align-items: baseline;
}

.ver-label {
  width: 3.5rem;
  color: var(--muted);
  font-size: 0.85rem;
}

.compare {
  margin: 0.75rem 0 0;
  font-weight: 600;
}

.compare.ok { color: var(--ok); }
.compare.warn { color: #e0c36a; }
.compare.err { color: var(--err); }
.compare.muted { color: var(--muted); font-weight: 400; }