:root {
  --bg: #0f172a;
  --panel: #111827;
  --card: #1f2937;
  --text: #e5e7eb;
  --muted: #94a3b8;
  --accent: #38bdf8;
  --accent-2: #a3e635;
  --danger: #f87171;
  --border: #334155;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", system-ui, sans-serif;
  background: radial-gradient(circle at top, #0b1120, #0f172a 40%, #0b1020 100%);
  color: var(--text);
  min-height: 100vh;
}

#app {
  max-width: 1100px;
  margin: 32px auto;
  padding: 0 20px 40px;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 24px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
}

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
}

h1 {
  margin: 0;
  font-size: 24px;
  letter-spacing: 0.5px;
}

h2 {
  margin: 0 0 10px 0;
  font-size: 18px;
}

.status {
  padding: 6px 12px;
  border-radius: 999px;
  background: #0b1220;
  border: 1px solid var(--border);
  color: var(--muted);
  font-size: 13px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px;
}

.card.wide {
  grid-column: span 2;
}

.row {
  display: flex;
  gap: 8px;
  margin: 8px 0;
}

input {
  flex: 1;
  background: #0b1220;
  border: 1px solid var(--border);
  color: var(--text);
  padding: 8px 10px;
  border-radius: 8px;
}

button {
  background: var(--accent);
  border: none;
  color: #0b1020;
  padding: 8px 12px;
  border-radius: 8px;
  cursor: pointer;
  font-weight: 600;
}

button:hover {
  filter: brightness(1.05);
}

button.ghost {
  background: transparent;
  color: var(--muted);
  border: 1px solid var(--border);
  margin-top: 16px;
}

pre {
  background: #0b1220;
  border: 1px solid var(--border);
  color: var(--muted);
  padding: 10px;
  border-radius: 8px;
  max-height: 260px;
  overflow: auto;
  font-size: 12px;
}

ul {
  list-style: none;
  padding: 0;
  margin: 8px 0 0;
  max-height: 220px;
  overflow: auto;
}

li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 6px 0;
  border-bottom: 1px dashed #263246;
}

.error {
  color: var(--danger);
  margin-top: 8px;
  font-size: 13px;
}

.muted {
  color: var(--muted);
  font-size: 12px;
  margin: 6px 0 12px;
}

.hidden {
  display: none;
}

@media (max-width: 900px) {
  .grid {
    grid-template-columns: 1fr;
  }

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