:root {
  --bg: #0b0f1a;
  --panel: #121a2a;
  --text: #e9eefc;
  --muted: #a7b1cc;
  --accent: #7cf1c6;
  --danger: #a21212;
  --border: rgba(255, 255, 255, 0.12);
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  background: radial-gradient(1200px 800px at 20% 0%, #152343 0%, var(--bg) 55%);
  color: var(--text);
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.container { max-width: 980px; margin: 0 auto; padding: 16px; }

.topbar {
  position: sticky;
  top: 0;
  backdrop-filter: blur(10px);
  background: rgba(11, 15, 26, 0.75);
  border-bottom: 1px solid var(--border);
}

.topbar .container { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.brand { font-weight: 800; color: var(--text); }
.nav { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; }

.panel {
  background: linear-gradient(180deg, rgba(18,26,42,0.95), rgba(18,26,42,0.75));
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 16px;
}

.grid { display: grid; gap: 16px; grid-template-columns: 1fr; }
@media (min-width: 880px) { .grid { grid-template-columns: 1.2fr 0.8fr; } }

.btn {
  display: inline-block;
  border: 1px solid var(--border);
  background: rgba(255,255,255,0.06);
  color: var(--text);
  padding: 10px 14px;
  border-radius: 12px;
  cursor: pointer;
}
.btn:hover { background: rgba(255,255,255,0.10); }
.btn.primary { border-color: rgba(124,241,198,0.35); background: rgba(124,241,198,0.12); }

.inline { display: inline; }
.linklike { background: none; border: none; color: var(--accent); cursor: pointer; padding: 0; font: inherit; }
.linklike:hover { text-decoration: underline; }

input, select, textarea {
  width: 100%;
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: rgba(0,0,0,0.2);
  color: var(--text);
}
label { display: block; margin: 12px 0 6px; color: var(--muted); }
.help { color: var(--muted); font-size: 0.95rem; }

.messages { margin: 12px 0; display: grid; gap: 8px; }
.message { padding: 10px 12px; border-radius: 12px; border: 1px solid var(--border); background: rgba(255,255,255,0.05); }
.message-error { border-color: rgba(255,107,107,0.35); }

table { width: 100%; border-collapse: collapse; }
th, td { padding: 10px; border-bottom: 1px solid var(--border); text-align: left; }
th { color: var(--muted); font-weight: 600; }