:root, :root[data-theme="dark"] {
  --bg: #0f1419; --panel: #1a2332; --panel2: #243044; --border: #3a4a5c;
  --text: #e8eef5; --muted: #9aabbc; --accent: #3b82f6; --accent2: #1d4ed8;
  --ok: #22c55e; --ok-bg: #14532d; --warn: #f59e0b; --err: #ef4444; --err-bg: #450a0a;
  --input: #0f172a; --hdr: #1e3a5f; --row: #15202e; --hover: #1e3a5f;
  color-scheme: dark;
}
:root[data-theme="light"] {
  --bg: #f3f5f8; --panel: #ffffff; --panel2: #eef2f7; --border: #c9d3df;
  --text: #16202c; --muted: #5b6b7d; --accent: #2563eb; --accent2: #1d4ed8;
  --ok: #15803d; --ok-bg: #dcfce7; --warn: #b45309; --err: #b91c1c; --err-bg: #fee2e2;
  --input: #ffffff; --hdr: #dbe6f3; --row: #f7f9fc; --hover: #e6eef9;
  color-scheme: light;
}
* { box-sizing: border-box; }
html, body { margin: 0; background: var(--bg); color: var(--text); }
body { font-family: "Segoe UI", system-ui, -apple-system, sans-serif; font-size: 14px; line-height: 1.45; }
a { color: var(--accent); }
h1 { font-size: 20px; margin: 0 0 4px; }
h2 { font-size: 16px; margin: 0 0 10px; }
.muted { color: var(--muted); }
.small { font-size: 12px; }

.topbar { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; justify-content: space-between;
  padding: 10px 16px; background: var(--panel); border-bottom: 2px solid var(--accent); }
.topbar .brand { font-weight: 700; font-size: 16px; color: var(--text); text-decoration: none; }
.topbar nav { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.topbar .who { color: var(--muted); font-size: 12px; }

main { max-width: 1200px; margin: 0 auto; padding: 18px 16px 48px; }
.card { background: var(--panel); border: 1px solid var(--border); border-radius: 10px; padding: 18px; margin-bottom: 16px; }
.auth-wrap { max-width: 400px; margin: 8vh auto 0; padding: 0 16px; }
.auth-wrap .card { padding: 24px; }
.auth-wrap .links { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px; margin-top: 14px; font-size: 13px; }

label { display: block; font-size: 12px; color: var(--muted); margin: 10px 0 4px; }
input[type=text], input[type=email], input[type=password], input[type=search], textarea, select {
  width: 100%; background: var(--input); color: var(--text); border: 1px solid var(--border);
  border-radius: 6px; padding: 8px 10px; font: inherit; }
textarea { min-height: 70px; resize: vertical; }
input:focus, textarea:focus, select:focus { outline: 2px solid var(--accent); outline-offset: 0; }

.btn { display: inline-flex; align-items: center; gap: 6px; background: var(--accent); color: #fff; border: 1px solid transparent;
  padding: 7px 13px; border-radius: 6px; cursor: pointer; font: inherit; font-weight: 600; font-size: 13px; text-decoration: none; white-space: nowrap; }
.btn:hover { background: var(--accent2); }
.btn.secondary { background: var(--panel2); color: var(--text); border-color: var(--border); }
.btn.secondary:hover { background: var(--hover); }
.btn.danger { background: #b91c1c; }
.btn.danger:hover { background: #991b1b; }
.btn.small { padding: 4px 9px; font-size: 12px; }
.btn[disabled] { opacity: .55; cursor: default; }
.btn.block { width: 100%; justify-content: center; margin-top: 16px; padding: 10px; }

.msg { border-radius: 6px; padding: 9px 12px; margin: 10px 0; font-size: 13px; display: none; word-break: break-word; }
.msg.show { display: block; }
.msg.err { background: var(--err-bg); color: var(--err); border: 1px solid var(--err); }
.msg.ok { background: var(--ok-bg); color: var(--ok); border: 1px solid var(--ok); }

.toolbar { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-bottom: 12px; }
.toolbar input[type=search], .toolbar input[type=text] { width: auto; flex: 1 1 220px; }
.table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: 8px; }
table { border-collapse: collapse; width: 100%; font-size: 13px; }
th { text-align: left; background: var(--hdr); padding: 8px 10px; white-space: nowrap; font-size: 12px; }
td { padding: 7px 10px; border-top: 1px solid var(--border); vertical-align: top; }
tr:nth-child(even) td { background: var(--row); }
td.actions { white-space: nowrap; }
td.actions .btn { margin: 1px 2px; }
.pill { display: inline-block; border-radius: 999px; padding: 1px 8px; font-size: 11px; font-weight: 600; border: 1px solid var(--border); }
.pill.active { color: var(--ok); border-color: var(--ok); }
.pill.pending { color: var(--warn); border-color: var(--warn); }
.pill.revoked { color: var(--err); border-color: var(--err); }
.pill.admin { color: var(--accent); border-color: var(--accent); }

.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--border); margin-bottom: 14px; flex-wrap: wrap; }
.tabs button { background: none; border: none; border-bottom: 2px solid transparent; color: var(--muted);
  padding: 8px 12px; font: inherit; font-weight: 600; cursor: pointer; }
.tabs button.active { color: var(--text); border-bottom-color: var(--accent); }
.hidden { display: none !important; }

ul.changes { margin: 4px 0 0; padding-left: 18px; }
ul.changes li { margin: 1px 0; }
pre { background: var(--input); border: 1px solid var(--border); border-radius: 6px; padding: 10px; overflow-x: auto; font-size: 12px; }

dialog { background: var(--panel); color: var(--text); border: 1px solid var(--border); border-radius: 10px; padding: 20px;
  width: min(460px, calc(100vw - 32px)); }
dialog::backdrop { background: rgba(0, 0, 0, .55); }
dialog .row { display: flex; gap: 8px; justify-content: flex-end; margin-top: 16px; flex-wrap: wrap; }

@media (max-width: 640px) {
  .topbar { padding: 10px 12px; }
  main { padding: 14px 12px 40px; }
  th, td { padding: 6px 7px; }
}
.auth-head { display: flex; justify-content: space-between; align-items: center; gap: 10px; margin-bottom: 14px; }
.msg a { color: inherit; font-weight: 600; }