:root {
  --bg: #0f1523;
  --panel: #171f31;
  --panel-2: #1e2740;
  --line: #2b3550;
  --text: #e8ecf6;
  --muted: #9aa6c0;
  --accent: #3d7dff;
  --accent-2: #2f6ae0;
  --ok: #23b26d;
  --warn: #e8a33d;
  --err: #e5544b;
  --radius: 12px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font: 15px/1.5 -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  -webkit-text-size-adjust: 100%;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.wrap { max-width: 1120px; margin: 0 auto; padding: 24px 16px 64px; }
.wrap-narrow { max-width: 620px; }

/* ── публичная страница ─────────────────────────────────────────── */

.public-head { text-align: center; margin: 40px 0 24px; }
.public-head h1 { font-size: 26px; margin: 0 0 8px; }
.public-head p { color: var(--muted); margin: 0; }

.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px;
}
.card + .card { margin-top: 18px; }

.field { margin-bottom: 14px; }
.field label { display: block; font-size: 13px; color: var(--muted); margin-bottom: 6px; }
.field .hint { font-size: 12px; color: var(--muted); margin-top: 6px; }

input[type=text], input[type=password], input[type=date], input[type=file], select, textarea {
  width: 100%;
  padding: 11px 12px;
  background: var(--panel-2);
  border: 1px solid var(--line);
  border-radius: 9px;
  color: var(--text);
  font: inherit;
}
input:focus, select:focus, textarea:focus { outline: 2px solid var(--accent); border-color: var(--accent); }
input[type=file] { padding: 9px; }

.code-input { font-size: 20px; letter-spacing: 2px; text-align: center; text-transform: uppercase; }

.btn {
  display: inline-block;
  padding: 11px 18px;
  border: 1px solid transparent;
  border-radius: 9px;
  background: var(--accent);
  color: #fff;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
}
.btn:hover { background: var(--accent-2); text-decoration: none; }
.btn:disabled { opacity: .55; cursor: not-allowed; }
.btn-block { display: block; width: 100%; }
.btn-lg { padding: 14px 22px; font-size: 16px; }
.btn-ghost { background: transparent; border-color: var(--line); color: var(--text); }
.btn-ghost:hover { background: var(--panel-2); }
.btn-danger { background: var(--err); }
.btn-danger:hover { background: #c8443c; }
.btn-ok { background: var(--ok); }
.btn-ok:hover { background: #1c9a5e; }
.btn-sm { padding: 7px 12px; font-size: 13px; }

.result { margin-top: 18px; display: none; }
.result.show { display: block; }
.note {
  border-radius: 10px;
  padding: 14px 16px;
  border: 1px solid var(--line);
  background: var(--panel-2);
}
.note .title { font-weight: 700; font-size: 16px; margin-bottom: 4px; }
.note .sub { color: var(--muted); font-size: 13px; }
.note.ok { border-color: rgba(35,178,109,.55); background: rgba(35,178,109,.12); }
.note.warn { border-color: rgba(232,163,61,.55); background: rgba(232,163,61,.12); }
.note.err { border-color: rgba(229,84,75,.55); background: rgba(229,84,75,.12); }
.note.used { border-color: rgba(61,125,255,.5); background: rgba(61,125,255,.12); }
.note.ok .title { color: #6ee2a5; }
.note.warn .title { color: #f3c178; }
.note.err .title { color: #ff8b83; }
.note.used .title { color: #9fc0ff; }

.mono { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; letter-spacing: 1px; }
.muted { color: var(--muted); }
.small { font-size: 13px; }
.center { text-align: center; }
.footer { margin-top: 26px; text-align: center; color: var(--muted); font-size: 12px; }
.fieldset-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }

/* ── админка ────────────────────────────────────────────────────── */

.topbar {
  background: var(--panel);
  border-bottom: 1px solid var(--line);
  padding: 12px 18px;
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
}
.topbar .brand { font-weight: 700; }
.topbar nav { display: flex; gap: 14px; flex-wrap: wrap; }
.topbar nav a { color: var(--muted); padding: 4px 0; }
.topbar nav a.active { color: var(--text); border-bottom: 2px solid var(--accent); }
.topbar .spacer { flex: 1; }

.grid { display: grid; gap: 16px; }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }

.stat { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px 16px; }
.stat .n { font-size: 24px; font-weight: 700; }
.stat .l { color: var(--muted); font-size: 13px; }

table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 9px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: .5px; white-space: nowrap; }
tbody tr:hover { background: rgba(255,255,255,.02); }
.table-wrap { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); overflow-x: auto; }

.badge { display: inline-block; padding: 2px 8px; border-radius: 99px; font-size: 12px; border: 1px solid var(--line); }
.badge.active { color: #6ee2a5; border-color: rgba(35,178,109,.5); background: rgba(35,178,109,.12); }
.badge.used { color: #9fc0ff; border-color: rgba(61,125,255,.5); background: rgba(61,125,255,.12); }
.badge.expired { color: #f3c178; border-color: rgba(232,163,61,.5); background: rgba(232,163,61,.12); }

.flash { padding: 12px 16px; border-radius: 10px; margin-bottom: 14px; border: 1px solid var(--line); }
.flash.ok { background: rgba(35,178,109,.12); border-color: rgba(35,178,109,.5); }
.flash.error { background: rgba(229,84,75,.12); border-color: rgba(229,84,75,.5); }

.toolbar { display: flex; gap: 10px; flex-wrap: wrap; align-items: flex-end; margin-bottom: 14px; }
.toolbar .grow { flex: 1; min-width: 180px; }
.toolbar .field { margin: 0; }
.inline-form { display: flex; gap: 8px; flex-wrap: wrap; align-items: flex-end; }
.inline-form input[type=text] { width: auto; }
.actions { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.pager { display: flex; gap: 8px; align-items: center; justify-content: center; margin-top: 16px; color: var(--muted); }
details.edit-row { margin-top: 6px; }
details.edit-row summary { cursor: pointer; color: var(--muted); font-size: 13px; }
details.edit-row form { margin-top: 8px; display: grid; gap: 8px; max-width: 320px; }
.login-card { max-width: 380px; margin: 90px auto 0; }
.login-card h1 { font-size: 20px; margin: 0 0 16px; }
.hstack { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.hstack > * { flex: 0 0 auto; }
pre.log { background: var(--panel-2); border: 1px solid var(--line); border-radius: 10px; padding: 12px; overflow-x: auto; font-size: 12px; }
.bar { height: 8px; background: var(--panel-2); border-radius: 99px; overflow: hidden; min-width: 80px; }
.bar > i { display: block; height: 100%; background: var(--accent); }

@media (max-width: 760px) {
  .grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid-2 { grid-template-columns: 1fr; }
  .fieldset-row { grid-template-columns: 1fr; }
  .hide-sm { display: none; }
  .wrap { padding: 16px 12px 48px; }
}

@media print {
  .topbar, .toolbar, .no-print, .pager { display: none !important; }
  body { background: #fff; color: #000; }
  .card, .stat, .table-wrap { border-color: #999; background: #fff; }
  th, td { border-color: #ccc; }
  a { color: #000; }
}