:root {
  color-scheme: dark;
  --bg: #0f1216;
  --surface: #171c22;
  --border: #2a3340;
  --text: #e8edf4;
  --muted: #94a3b8;
  --accent: #38bdf8;
  --danger: #f87171;
  --ok: #4ade80;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  line-height: 1.45;
}

.top {
  padding: 1.25rem 1.5rem 0.5rem;
  border-bottom: 1px solid var(--border);
}

.top h1 {
  margin: 0 0 0.35rem;
  font-size: 1.35rem;
  font-weight: 650;
}

.muted {
  color: var(--muted);
}

.small {
  font-size: 0.875rem;
}

.file-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin: 1rem 0 0.75rem;
}

.grid {
  display: grid;
  gap: 1rem;
  padding: 1rem 1.5rem 2rem;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1rem 1.1rem 1.15rem;
}

.card.wide {
  grid-column: 1 / -1;
}

.card h2 {
  margin: 0 0 0.5rem;
  font-size: 1.05rem;
}

label {
  display: block;
  margin-top: 0.65rem;
  font-size: 0.85rem;
  color: var(--muted);
}

input[type="email"],
input[type="password"],
input[type="number"] {
  margin-top: 0.35rem;
  width: 100%;
  padding: 0.45rem 0.55rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: #0b0e12;
  color: var(--text);
}

.limit {
  max-width: 220px;
}

.opts {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem 1rem;
  margin-top: 0.75rem;
}

.opts.sub {
  margin-top: 0.5rem;
  align-items: center;
}

.chk {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.9rem;
  color: var(--text);
}

.btn {
  margin-top: 0.85rem;
  padding: 0.45rem 0.85rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: #222831;
  color: var(--text);
  cursor: pointer;
  font-size: 0.9rem;
}

.btn.primary {
  border-color: #0369a1;
  background: linear-gradient(180deg, #0284c7, #0369a1);
  font-weight: 600;
}

.btn.secondary {
  background: #1a222c;
}

.btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.out {
  margin-top: 0.85rem;
  padding: 0.65rem 0.75rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: #0b0e12;
  font-size: 0.875rem;
  white-space: pre-wrap;
}

.out.err {
  border-color: #7f1d1d;
  color: #fecaca;
}

.out.ok {
  border-color: #14532d;
}

.log {
  margin-top: 0.75rem;
  min-height: 180px;
  max-height: 420px;
  overflow: auto;
  padding: 0.65rem 0.75rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: #080a0d;
  font-size: 0.8rem;
  line-height: 1.35;
}

.log .line-warn {
  color: #fbbf24;
}

.log .line-err {
  color: var(--danger);
}

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

code {
  font-size: 0.88em;
  background: #1e293b66;
  padding: 0.1rem 0.28rem;
  border-radius: 4px;
}