:root {
  --bg: #0f1419;
  --card: #1a2332;
  --text: #e7ecf3;
  --muted: #9aa7b8;
  --accent: #4f8cff;
  --accent2: #2dd4bf;
  --danger: #f87171;
  --border: #2a3648;
  --radius: 12px;
  font-family: "Segoe UI", system-ui, sans-serif;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: radial-gradient(1200px 600px at 10% -10%, #1b2a44, var(--bg));
  color: var(--text);
  min-height: 100vh;
}
.top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border);
}
.top h1 { margin: 0; font-size: 1.4rem; }
.subtitle { margin: 0.25rem 0 0; color: var(--muted); font-size: 0.9rem; }
.lang button, .tabs .tab, button, .button {
  background: #243147;
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.45rem 0.85rem;
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
}
.lang button.active, .tabs .tab.active { background: var(--accent); border-color: var(--accent); }
button.primary { background: var(--accent2); color: #042f2e; border-color: var(--accent2); font-weight: 600; }
.tabs {
  display: flex;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}
main { padding: 1.25rem 1.5rem 3rem; max-width: 1100px; margin: 0 auto; }
.panel { display: none; }
.panel.active { display: block; }
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.1rem;
  margin-bottom: 1rem;
}
.card.warn { border-color: #854d0e; background: #2a2110; }
.card h2 { margin: 0 0 0.75rem; font-size: 1.05rem; }
.hint { color: var(--muted); font-size: 0.85rem; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
@media (max-width: 800px) { .grid-2 { grid-template-columns: 1fr; } }
textarea, input {
  width: 100%;
  background: #0d1520;
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.6rem 0.75rem;
  margin: 0.35rem 0 0.75rem;
}
.row { display: flex; gap: 0.5rem; flex-wrap: wrap; align-items: center; margin-top: 0.5rem; }
.checkbox { display: flex; align-items: center; gap: 0.4rem; margin: 0.5rem 0; }
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
th, td { border-bottom: 1px solid var(--border); padding: 0.45rem 0.4rem; text-align: left; }
th { color: var(--muted); font-weight: 600; }
.log {
  background: #0a1018;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.85rem;
  overflow: auto;
  max-height: 360px;
  white-space: pre-wrap;
  word-break: break-word;
  font-size: 0.82rem;
}
footer {
  text-align: center;
  color: var(--muted);
  padding: 1rem;
  border-top: 1px solid var(--border);
}
footer a { color: var(--accent2); }
label { display: block; color: var(--muted); font-size: 0.85rem; }