:root {
  --bg0: #0f1412;
  --bg1: #1a2420;
  --ink: #e8f0ea;
  --muted: #8fa398;
  --accent: #3dba7a;
  --accent-dim: #2a7a52;
  --danger: #d96464;
  --card: rgba(255, 255, 255, 0.04);
  --line: rgba(232, 240, 234, 0.12);
  --font-display: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
body {
  font-family: var(--font-body);
  color: var(--ink);
  background:
    radial-gradient(1200px 600px at 10% -10%, #1f3d30 0%, transparent 55%),
    radial-gradient(900px 500px at 100% 0%, #243048 0%, transparent 50%),
    linear-gradient(165deg, var(--bg0), var(--bg1));
}

.page {
  width: min(720px, 100%);
  margin: 0 auto;
  padding: 28px 18px 48px;
}

.header { margin-bottom: 28px; }
.brand {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(2rem, 7vw, 2.8rem);
  font-weight: 700;
  letter-spacing: 0.04em;
}
.tag { margin: 8px 0 0; color: var(--muted); }

.status-card,
.panel,
.advanced {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 16px 18px;
  backdrop-filter: blur(8px);
}

.status-row {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
}
.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #666;
  box-shadow: 0 0 0 0 rgba(61, 186, 122, 0.4);
}
.dot.on {
  background: var(--accent);
  animation: pulse 1.6s ease-in-out infinite;
}
.dot.busy { background: #e0b35a; }
.dot.err { background: var(--danger); }
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(61, 186, 122, 0.45); }
  50% { box-shadow: 0 0 0 8px rgba(61, 186, 122, 0); }
}
.hint { margin: 10px 0 0; color: var(--muted); font-size: 0.95rem; line-height: 1.5; }

.controls {
  display: flex;
  gap: 12px;
  margin: 18px 0;
}
.btn {
  appearance: none;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--ink);
  border-radius: 999px;
  padding: 12px 20px;
  font-size: 1rem;
  cursor: pointer;
}
.btn:disabled { opacity: 0.4; cursor: not-allowed; }
.btn.primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-dim));
  border-color: transparent;
  color: #06140d;
  font-weight: 700;
}

.panels {
  display: grid;
  gap: 12px;
}
@media (min-width: 640px) {
  .panels { grid-template-columns: 1fr 1fr; }
}
.panel h2 {
  margin: 0 0 8px;
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 600;
}
.log {
  margin: 0;
  min-height: 4.5rem;
  white-space: pre-wrap;
  word-break: break-word;
  line-height: 1.55;
}

.advanced { margin-top: 18px; }
.advanced summary {
  cursor: pointer;
  color: var(--muted);
  margin-bottom: 10px;
}
.field {
  display: grid;
  gap: 6px;
  margin-bottom: 12px;
  font-size: 0.9rem;
  color: var(--muted);
}
.field input,
.field textarea {
  width: 100%;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: rgba(0, 0, 0, 0.25);
  color: var(--ink);
  padding: 10px 12px;
  font: inherit;
}