:root {
  --bg: #0f172a;
  --panel: #111827;
  --border: #1f2937;
  --text: #e5e7eb;
  --muted: #9ca3af;
  --primary: #3b82f6;
  --primary-600: #2563eb;
  --danger: #ef4444;
  --secondary: #4b5563;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  background: radial-gradient(1200px 600px at 20% 10%, #111827 10%, #0f172a 60%);
  color: var(--text);
}

.container {
  min-height: 100%;
  display: grid;
  place-items: center;
  padding: 24px;
}

.card {
  width: 100%;
  max-width: 480px;
  background: linear-gradient(180deg, rgba(17,24,39,0.9), rgba(17,24,39,0.8));
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 28px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.35);
  backdrop-filter: blur(6px);
}

h1 {
  margin: 0 0 6px 0;
  font-size: 24px;
  letter-spacing: 0.2px;
}
.muted {
  margin: 0 0 16px 0;
  color: var(--muted);
  font-size: 14px;
}

.tabs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
  background: #0b1220;
  padding: 6px;
  border: 1px solid var(--border);
  border-radius: 10px;
  margin-bottom: 14px;
}
.tab {
  border: 0;
  background: transparent;
  color: var(--muted);
  padding: 10px 12px;
  border-radius: 8px;
  cursor: pointer;
}
.tab.active {
  background: #0d1a2f;
  color: var(--text);
  border: 1px solid var(--border);
}

.form {
  display: grid;
  gap: 12px;
  margin-top: 10px;
}
.hidden { display: none; }
label {
  display: grid;
  gap: 6px;
  font-size: 14px;
  color: var(--text);
}
input {
  width: 100%;
  padding: 12px 14px;
  border-radius: 10px;
  background: #0b1220;
  border: 1px solid var(--border);
  color: var(--text);
  outline: none;
}
input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(59,130,246,0.25);
}

.btn {
  padding: 12px 14px;
  border-radius: 10px;
  border: 1px solid transparent;
  background: linear-gradient(180deg, var(--primary), var(--primary-600));
  color: white;
  cursor: pointer;
  font-weight: 600;
}
.btn.secondary {
  background: #1f2937;
  border-color: var(--border);
}
.btn.danger {
  background: #7f1d1d;
  border-color: #991b1b;
}
.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.status {
  margin-top: 12px;
  min-height: 22px;
  color: var(--muted);
  font-size: 14px;
}

.me {
  margin-top: 18px;
  border-top: 1px solid var(--border);
  padding-top: 14px;
}
pre {
  background: #0b1220;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px;
  overflow: auto;
}
.actions {
  margin-top: 10px;
  display: flex;
  gap: 8px;
}

select {
  width: 100%;
  padding: 12px 14px;
  border-radius: 10px;
  background: #0b1220;
  border: 1px solid var(--border);
  color: var(--text);
  outline: none;
}
select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(59,130,246,0.25);
}