:root {
  color-scheme: dark;
  --bg: #0d1117;
  --bg-elev: #121826;
  --bg-card: #141c2b;
  --text: #f2f6ff;
  --muted: #b9c6d9;
  --border: rgba(255, 255, 255, 0.12);
  --accent: #2dd4bf;
  --accent-strong: #22c1b3;
  --shadow: 0 20px 60px rgba(4, 9, 20, 0.5);
}
* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(1200px 520px at 15% -10%, rgba(45, 212, 191, 0.22), transparent 60%),
    radial-gradient(900px 460px at 110% 10%, rgba(59, 130, 246, 0.18), transparent 55%),
    linear-gradient(180deg, #0b0f16 0%, #0f1624 100%);
  color: var(--text);
  font-family: "Avenir Next", "Avenir", "Segoe UI Variable", "Segoe UI", "Helvetica Neue", sans-serif;
  display: flex;
  justify-content: center;
  padding: 24px 12px;
  touch-action: manipulation;
}
.page {
  width: min(1100px, 100%);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 20px;
  box-shadow: var(--shadow);
  padding: 20px 24px 28px;
}
.page-head { margin-bottom: 16px; }
.page-head h1 { margin: 6px 0; font-size: clamp(24px, 4vw, 30px); }
.lead { margin: 0; color: var(--muted); }
.brand { color: var(--muted); text-decoration: none; font-weight: 600; }
.info-toggle-wrap {
  position: fixed;
  top: 12px;
  right: 12px;
  z-index: 30;
}
.info-btn {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--bg-elev);
  color: var(--text);
  font-weight: 700;
  cursor: pointer;
}
.info-panel {
  position: absolute;
  right: 0;
  top: 40px;
  min-width: 220px;
  padding: 10px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--bg-card);
  box-shadow: var(--shadow);
}
.info-panel.hidden { display: none; }
.info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 8px;
}
.small { font-size: 12px; color: var(--muted); }
.auth-row { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 8px; }
.auth-btn {
  padding: 6px 10px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--bg-elev);
  color: var(--text);
  font-size: 12px;
  text-decoration: none;
  cursor: pointer;
}
.lang-toggle {
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--bg-elev);
  color: var(--text);
  font-size: 12px;
  cursor: pointer;
}
.card {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 18px;
  display: grid;
  gap: 18px;
}
.card-sub { border-top: 1px solid var(--border); padding-top: 12px; }
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 12px;
}
.field { display: grid; gap: 6px; color: var(--text); }
.field span, legend { font-weight: 600; }
input, select {
  width: 100%;
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: #0b1220;
  color: var(--text);
  font-size: 15px;
}
fieldset { border: 1px solid var(--border); border-radius: 12px; padding: 12px; }
.chips { display: flex; gap: 10px; flex-wrap: wrap; }
.chips label { padding: 8px 12px; background: #0b1324; border: 1px solid var(--border); border-radius: 12px; cursor: pointer; }
.chips input { margin-right: 6px; }
.checkbox, .radio { display: flex; align-items: center; gap: 8px; font-weight: 600; }
.field .checkbox {
  padding: 8px 12px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--bg-elev);
  color: var(--text);
  width: fit-content;
}
.field .checkbox input {
  width: 16px;
  height: 16px;
  accent-color: var(--accent);
}
.mode-row { display: flex; gap: 14px; flex-wrap: wrap; }
.options { display: grid; gap: 12px; margin-top: 8px; }
.hidden { display: none; }
.names-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 8px; }
.actions { display: flex; align-items: center; gap: 12px; }
.primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  color: #051319;
  border: none;
  padding: 12px 18px;
  border-radius: 12px;
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 14px 28px rgba(45, 212, 191, 0.28);
}
.primary:hover { background: linear-gradient(135deg, #35e3cf, #25c7b8); }
.status { color: var(--muted); min-height: 20px; }
@media (max-width: 640px) {
  body { padding: 12px; }
  .page { padding: 16px; }
}