:root {
  --bg: #f6f7f9;
  --card: #ffffff;
  --ink: #1f2933;
  --muted: #6b7280;
  --accent: #2f6f4f;
  --accent-ink: #ffffff;
  --border: #e2e6ea;
  --danger: #b3261e;
}
* { box-sizing: border-box; }
body { margin: 0; font-family: system-ui, sans-serif; color: var(--ink); background: var(--bg); }
.topbar { display: flex; align-items: center; gap: 1.5rem; padding: 0.8rem 1.5rem;
  background: var(--card); border-bottom: 1px solid var(--border); flex-wrap: wrap; }
.brand { font-weight: 700; font-size: 1.2rem; color: var(--accent); text-decoration: none; }
.topbar nav { display: flex; gap: 1rem; flex-wrap: wrap; margin-left: auto; }
.topbar nav a { color: var(--ink); text-decoration: none; font-size: 0.95rem; }
.topbar nav a:hover { color: var(--accent); }
.admin-link { font-weight: 600; color: var(--accent) !important; }
main { max-width: 880px; margin: 1.5rem auto; padding: 0 1.5rem; }
.card { background: var(--card); border: 1px solid var(--border); border-radius: 10px;
  padding: 1.5rem; margin-bottom: 1.2rem; }
h1 { font-size: 1.5rem; } h2 { font-size: 1.2rem; }
.balance { font-size: 2.2rem; font-weight: 700; color: var(--accent); }
label { display: block; margin: 0.6rem 0 0.2rem; font-size: 0.9rem; color: var(--muted); }
input, select, textarea { width: 100%; padding: 0.55rem; border: 1px solid var(--border);
  border-radius: 7px; font: inherit; background: #fff; }
textarea { min-height: 8rem; font-family: ui-monospace, monospace; }
button, .btn { display: inline-block; padding: 0.55rem 1.1rem; border: none; border-radius: 7px;
  background: var(--accent); color: var(--accent-ink); font: inherit; cursor: pointer; text-decoration: none; }
button.secondary, .btn.secondary { background: #e8edf0; color: var(--ink); }
button.danger { background: var(--danger); }
.quick { display: flex; gap: 0.5rem; margin: 0.5rem 0; }
.quick button { background: #e8edf0; color: var(--ink); }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 0.5rem; border-bottom: 1px solid var(--border); font-size: 0.92rem; }
.flash { padding: 0.7rem 1rem; border-radius: 8px; margin-bottom: 1rem; }
.flash-success { background: #e6f4ec; color: #1d6b3f; }
.flash-error { background: #fbeae9; color: var(--danger); }
.muted { color: var(--muted); font-size: 0.9rem; }
.tag { display: inline-block; padding: 0.1rem 0.5rem; border-radius: 999px; font-size: 0.75rem;
  background: #eef2f5; color: var(--muted); }
.tag.base { background: #e6f4ec; color: var(--accent); }
.keycode { font-family: ui-monospace, monospace; background: #1f2933; color: #fff;
  padding: 0.6rem; border-radius: 7px; word-break: break-all; }
.keyrow { display: flex; align-items: stretch; gap: 0.5rem; }
.keyrow .keycode { flex: 1; }
.copy-btn { background: #e8edf0; color: var(--ink); border: none; border-radius: 7px;
  padding: 0 0.8rem; font-size: 1.1rem; cursor: pointer; line-height: 1; }
.copy-btn:hover { background: #dbe3e8; }
.copy-btn.copied { background: var(--accent); color: #fff; }
.grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.qr { display: block; margin: 1rem auto; width: 220px; height: 220px; image-rendering: pixelated; }
.inline { display: inline; }