:root {
  --bg: #0b1020;
  --card: #141b2d;
  --ink: #e8ecf4;
  --muted: #97a3b8;
  --brand: #4f8cff;
  --brand-d: #3b76e8;
  --ok: #34d399;
  --err: #f87171;
  --border: #27314a;
  --input-bg: #0e1526;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.5;
  padding: 32px 16px;
}
.card {
  max-width: 720px;
  margin: 0 auto;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 28px 32px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.45);
}
h1 { font-size: 22px; margin: 0 0 4px; color: var(--ink); }
h3 { margin: 0 0 8px; }
.sub { color: var(--muted); margin: 0 0 20px; }
fieldset {
  border: 1px solid var(--border);
  border-radius: 10px;
  margin: 0 0 18px;
  padding: 14px 16px;
}
legend { font-weight: 600; padding: 0 6px; color: var(--brand); }
label { display: block; margin: 10px 0; font-size: 14px; }
input, select, textarea {
  width: 100%;
  margin-top: 4px;
  padding: 9px 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 14px;
  background: var(--input-bg);
  color: var(--ink);
}
input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--brand);
  box-shadow: 0 0 0 3px rgba(79, 140, 255, 0.25);
}
input:disabled, select:disabled {
  background: #0a1020;
  color: var(--muted);
}
select option { background: var(--card); color: var(--ink); }
input.other { margin-top: 8px; }
.req { color: var(--err); }
.antibot { font-size: 13px; color: var(--muted); margin: 8px 0 16px; }
.antibot input { width: auto; vertical-align: middle; }
button {
  background: var(--brand);
  color: #fff;
  border: none;
  padding: 11px 20px;
  border-radius: 8px;
  font-size: 15px;
  cursor: pointer;
}
button:hover { background: var(--brand-d); }
button:disabled { opacity: 0.6; cursor: not-allowed; }
.msg { font-size: 14px; margin-top: 12px; color: var(--muted); }
.msg.err { color: var(--err); }
.success { text-align: left; }
.success h2 { color: var(--ok); margin: 0 0 8px; }
.result { margin-top: 22px; padding: 16px; border: 1px dashed var(--brand); border-radius: 10px; }
.result pre {
  background: var(--input-bg);
  color: var(--ink);
  padding: 10px;
  border-radius: 8px;
  overflow-x: auto;
  font-size: 12px;
  word-break: break-all;
}

/* ---------- Admin review ---------- */
section { margin-bottom: 28px; }
section h3 {
  font-size: 16px;
  margin: 0 0 12px;
  color: var(--ink);
  border-bottom: 1px solid var(--border);
  padding-bottom: 7px;
}
.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: flex-end;
  margin-bottom: 14px;
}
.filters label { margin: 0; flex: 1 1 160px; }
.filters button { flex: 0 0 auto; padding: 9px 16px; }
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td {
  padding: 8px 10px;
  border-bottom: 1px solid var(--border);
  text-align: left;
  white-space: nowrap;
}
th { color: var(--muted); font-weight: 600; }
tbody tr:hover { background: rgba(79, 140, 255, 0.07); }
td button { padding: 6px 10px; font-size: 12px; margin-right: 6px; }
.badge { padding: 2px 9px; border-radius: 999px; font-size: 12px; }
.st-pending { background: #3f3a18; color: #fde68a; }
.st-approved { background: #123a2a; color: #6ee7b7; }
.st-rejected { background: #3d1a1a; color: #fca5a5; }

/* ---------- Mobile ---------- */
@media (max-width: 640px) {
  body { padding: 16px 10px; }
  .card { padding: 18px 16px; border-radius: 12px; }
  h1 { font-size: 19px; }
  .sub { margin-bottom: 16px; }
  fieldset { padding: 12px; margin-bottom: 14px; }
  legend { font-size: 14px; }
  label { font-size: 14px; }
  /* 16px prevents iOS auto-zoom on focus */
  input, select, textarea { font-size: 16px; padding: 11px 10px; }
  button { width: 100%; padding: 13px; font-size: 16px; }
  .result pre { font-size: 11px; }
  /* admin: stack filters, full-width buttons, allow table to scroll sideways */
  .filters { flex-direction: column; align-items: stretch; }
  .filters button, td button { width: 100%; margin: 0 0 6px; }
  td button { margin-bottom: 4px; }
  table { font-size: 12px; }
}

/* 后台补充 */
.msg.ok { color: var(--ok); }
.btn {
  display: inline-block;
  background: var(--brand);
  color: #fff;
  padding: 9px 16px;
  border-radius: 8px;
  text-decoration: none;
  font-size: 15px;
}
.btn:hover { background: var(--brand-d); }
form.inline { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; margin: 0; }
form.inline input[type="text"] { width: 130px; margin: 0; padding: 6px 8px; font-size: 12px; }
form.inline button { padding: 6px 10px; font-size: 12px; width: auto; }
a { color: var(--brand); }