:root {
  --bg: #0f1623;
  --panel: #16203200;
  --panel-solid: #161f30;
  --card: #1b2740;
  --border: #2a3a5a;
  --text: #e6ecf6;
  --muted: #8da2c4;
  --accent: #4f8cff;
  --accent-soft: #1f3563;
  --good: #38c172;
  --bad: #ff5d6c;
  --mono: ui-monospace, "SF Mono", "Cascadia Code", "Fira Code", Consolas, monospace;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: radial-gradient(1200px 600px at 80% -10%, #1c2c4e 0%, var(--bg) 55%);
  color: var(--text);
  font-family: "Inter", system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  min-height: 100vh;
}
.app { max-width: 1000px; margin: 0 auto; padding: 28px 20px 60px; }
header.top { display: flex; align-items: center; gap: 12px; margin-bottom: 6px; }
.logo {
  width: 38px; height: 38px; border-radius: 10px;
  background: linear-gradient(135deg, var(--accent), #7aa7ff);
  display: grid; place-items: center; font-weight: 800; color: #06122c;
}
h1 { font-size: 1.5rem; margin: 0; letter-spacing: 0.2px; }
.tagline { color: var(--muted); font-size: 0.9rem; margin: 2px 0 22px; }
.tabs { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 20px; }
.tab {
  border: 1px solid var(--border); background: var(--card); color: var(--muted);
  padding: 8px 14px; border-radius: 999px; cursor: pointer; font-size: 0.86rem;
  transition: all .15s ease;
}
.tab:hover { color: var(--text); border-color: var(--accent); }
.tab.active { background: var(--accent-soft); color: #fff; border-color: var(--accent); }
.panel {
  background: var(--card); border: 1px solid var(--border); border-radius: 16px;
  padding: 20px; box-shadow: 0 18px 40px rgba(0,0,0,.25);
}
.panel h2 { margin: 0 0 4px; font-size: 1.12rem; }
.panel .desc { color: var(--muted); font-size: 0.85rem; margin: 0 0 16px; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
@media (max-width: 720px) { .grid2 { grid-template-columns: 1fr; } }
label.field { display: block; font-size: 0.78rem; color: var(--muted); margin-bottom: 6px; text-transform: uppercase; letter-spacing: .6px; }
textarea, input[type=text], input[type=number] {
  width: 100%; background: #0e1626; color: var(--text); border: 1px solid var(--border);
  border-radius: 10px; padding: 11px 12px; font-family: var(--mono); font-size: 0.85rem;
  resize: vertical;
}
textarea { min-height: 150px; line-height: 1.5; }
textarea:focus, input:focus { outline: none; border-color: var(--accent); }
.row { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; margin-top: 12px; }
button.btn {
  background: var(--accent); color: #04122e; border: none; border-radius: 9px;
  padding: 9px 16px; font-weight: 600; cursor: pointer; font-size: 0.85rem;
}
button.btn.ghost { background: transparent; color: var(--muted); border: 1px solid var(--border); }
button.btn.ghost:hover { color: var(--text); border-color: var(--accent); }
button.btn:active { transform: translateY(1px); }
.status { font-size: 0.82rem; margin-top: 10px; min-height: 18px; }
.status.ok { color: var(--good); }
.status.err { color: var(--bad); }
.out {
  white-space: pre-wrap; word-break: break-word; background: #0e1626;
  border: 1px solid var(--border); border-radius: 10px; padding: 12px;
  font-family: var(--mono); font-size: 0.84rem; min-height: 48px; line-height: 1.55;
}
.kv { display: grid; grid-template-columns: 130px 1fr; gap: 6px 14px; font-size: 0.86rem; }
.kv .k { color: var(--muted); }
.pill { display:inline-block; padding: 2px 8px; border-radius: 999px; font-size: 0.72rem; background: var(--accent-soft); color:#cfe0ff; }
footer { color: var(--muted); font-size: 0.8rem; text-align: center; margin-top: 30px; }
footer a { color: var(--accent); text-decoration: none; }
.copy { font-size: 0.74rem; cursor: pointer; color: var(--accent); user-select: none; }