:root {
  --bg: #09090b;
  --bg-card: #141417;
  --border: #27272a;
  --text: #fafafa;
  --muted: #a1a1aa;
  --primary: #f43f5e;
  --primary-hover: #e11d48;
  --ok: #22c55e;
  --err: #fb7185;
}

* { box-sizing: border-box; }

body.sub-page {
  margin: 0;
  min-height: 100vh;
  font-family: "Segoe UI", system-ui, sans-serif;
  color: var(--text);
  background:
    radial-gradient(700px 400px at 15% -10%, rgba(244, 63, 94, 0.18) 0%, transparent 55%),
    radial-gradient(600px 400px at 90% 0%, rgba(244, 63, 94, 0.07) 0%, transparent 50%),
    linear-gradient(180deg, #0d0d10 0%, var(--bg) 100%);
}

.sub-header {
  width: min(980px, 92vw);
  margin: 0 auto;
  padding: 20px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.sub-brand {
  color: var(--primary);
  text-decoration: none;
  font-weight: 800;
  letter-spacing: 0.04em;
}

.sub-nav {
  display: flex;
  gap: 14px;
}

.sub-nav a {
  color: var(--muted);
  text-decoration: none;
}

.sub-main {
  width: min(980px, 92vw);
  margin: 22px auto 40px;
}

.sub-card {
  background: linear-gradient(180deg, #1a1a1f 0%, var(--bg-card) 100%);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 24px;
}

.sub-card h1 {
  margin: 0 0 8px;
  font-size: 1.6rem;
}

.sub-muted {
  margin: 0 0 18px;
  color: var(--muted);
}

.sub-note {
  margin: 10px 0 0;
  color: var(--muted);
}

.sub-ok { color: var(--ok); }
.sub-err { color: var(--err); }

.sub-grid {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  margin: 6px 0 0;
}

.sub-grid div {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px;
}

.sub-grid dt {
  font-size: 0.86rem;
  color: var(--muted);
  margin-bottom: 6px;
}

.sub-grid dd {
  margin: 0;
  font-weight: 600;
}

.sub-empty {
  margin-top: 16px;
  padding: 14px;
  border: 1px dashed var(--border);
  border-radius: 12px;
}

.sub-actions {
  margin-top: 18px;
  display: flex;
  gap: 10px;
}

.sub-btn {
  display: inline-block;
  border: none;
  border-radius: 12px;
  background: var(--primary);
  color: #fff;
  font-weight: 700;
  text-decoration: none;
  padding: 10px 14px;
  cursor: pointer;
}

.sub-btn:hover { background: var(--primary-hover); }

.sub-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.sub-btn-danger {
  background: #be123c;
}