:root {
  --bg: #0b0d10;
  --card: #12161c;
  --border: #2a313b;
  --text: #e9edf2;
  --muted: #9ba7b5;
  --brand: #f58f99;
  --ok: #10b981;
  --err: #ef4444;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: radial-gradient(circle at top, #1a212d 0, var(--bg) 45%);
  color: var(--text);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px;
  display: grid;
  gap: 16px;
}

.card {
  background: rgba(18, 22, 28, 0.9);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 18px;
}

.narrow { max-width: 460px; }
.hidden { display: none; }
.muted { color: var(--muted); margin-top: 0; }
.topbar { display: flex; align-items: center; justify-content: space-between; }
.section-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 8px; }

.form { display: grid; gap: 10px; }
label { display: grid; gap: 6px; font-size: 14px; color: var(--muted); }
input, select, button {
  border-radius: 8px;
  border: 1px solid var(--border);
  background: #0f1318;
  color: var(--text);
  padding: 10px 12px;
  font-size: 14px;
}

button {
  background: var(--brand);
  border-color: transparent;
  color: #1c1114;
  font-weight: 700;
  cursor: pointer;
}
button.secondary {
  background: transparent;
  color: var(--text);
  border-color: var(--border);
}
button:hover { opacity: 0.95; }

.checkbox {
  display: flex;
  align-items: center;
  gap: 8px;
}
.checkbox input { width: 16px; height: 16px; }

.table-wrap { overflow: auto; }
table { width: 100%; border-collapse: collapse; }
th, td { border-bottom: 1px solid var(--border); padding: 8px; text-align: left; vertical-align: top; font-size: 13px; }
th { color: var(--muted); font-weight: 600; }

td select, td input { width: 100%; }

.grid-2 {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.status { min-height: 18px; font-size: 13px; color: var(--muted); margin: 8px 0 0; }
.status.success { color: var(--ok); }
.status.error { color: var(--err); }
.hint { color: var(--muted); font-size: 12px; }
.link-btn {
  border: 0;
  background: none;
  color: var(--brand);
  cursor: pointer;
  padding: 0;
  font-size: 13px;
  text-decoration: underline;
}

hr { border: 0; border-top: 1px solid var(--border); margin: 18px 0; }

@media (max-width: 900px) {
  .grid-2 { grid-template-columns: 1fr; }
}