:root {
    --bg: #12141a; --surface: #1b1e27; --surface2: #232733; --border: #2e3340;
    --ink: #e8eaf0; --muted: #8b93a7; --accent: #6c8cff; --accent-deep: #4d6cd9;
    --ok: #3ecf8e; --warn: #f0a742; --err: #f0605c;
  }
  * { box-sizing: border-box; }
  body {
    margin: 0; background: var(--bg); color: var(--ink);
    font: 15px/1.5 system-ui, -apple-system, "Segoe UI", sans-serif;
  }
  header {
    display: flex; align-items: center; justify-content: space-between;
    padding: 14px 24px; border-bottom: 1px solid var(--border); background: var(--surface);
  }
  header h1 { font-size: 18px; margin: 0; font-weight: 700; }
  header h1 span { color: var(--accent); }
  main { max-width: 960px; margin: 0 auto; padding: 24px; }
  .card {
    background: var(--surface); border: 1px solid var(--border); border-radius: 14px;
    padding: 20px; margin-bottom: 20px;
  }
  .card h2 { font-size: 15px; margin: 0 0 14px; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); }
  input, select {
    background: var(--surface2); border: 1px solid var(--border); color: var(--ink);
    border-radius: 8px; padding: 9px 11px; font: inherit; width: 100%;
  }
  label { display: block; font-size: 13px; color: var(--muted); margin: 10px 0 4px; }
  button {
    background: var(--accent); color: #fff; border: 0; border-radius: 8px;
    padding: 9px 16px; font: inherit; font-weight: 600; cursor: pointer;
  }
  button:hover { background: var(--accent-deep); }
  button.secondary { background: var(--surface2); border: 1px solid var(--border); color: var(--ink); }
  button.secondary:hover { background: var(--border); }
  button:disabled { opacity: .5; cursor: not-allowed; }
  table { width: 100%; border-collapse: collapse; margin-top: 4px; }
  th, td { text-align: left; padding: 9px 8px; border-bottom: 1px solid var(--border); font-size: 14px; }
  th { color: var(--muted); font-weight: 600; font-size: 12px; text-transform: uppercase; }
  .badge { display: inline-block; padding: 2px 9px; border-radius: 999px; font-size: 11px; font-weight: 700; margin-right: 4px; }
  .badge.ok { background: rgba(62,207,142,.15); color: var(--ok); }
  .badge.pending { background: rgba(240,167,66,.15); color: var(--warn); }
  .row-actions button { font-size: 12px; padding: 6px 10px; margin-right: 4px; margin-top: 3px; }
  .msg { padding: 10px 12px; border-radius: 8px; margin-bottom: 14px; font-size: 14px; }
  .msg.err { background: rgba(240,96,92,.12); color: var(--err); }
  .msg.ok { background: rgba(62,207,142,.12); color: var(--ok); }
  .login-wrap { display: flex; align-items: center; justify-content: center; min-height: 100vh; }
  .login-box { width: 340px; }
  .hidden { display: none !important; }
  .modal-backdrop {
    position: fixed; inset: 0; background: rgba(0,0,0,.6);
    display: flex; align-items: center; justify-content: center; z-index: 10;
  }
  .modal { background: var(--surface); border: 1px solid var(--border); border-radius: 14px; padding: 22px; width: 420px; max-width: 92vw; max-height: 86vh; overflow: auto; }
  .modal h3 { margin: 0 0 14px; }
  .qr-img { width: 220px; height: 220px; display: block; margin: 14px auto; border-radius: 10px; }
  .muted { color: var(--muted); font-size: 13px; }
  .top-actions { display: flex; gap: 10px; align-items: end; flex-wrap: wrap; }
  .top-actions > div { flex: 1; min-width: 160px; }