/* ================= 管理后台 ================= */
:root {
  --bg: #0a1420;
  --panel: rgba(255, 255, 255, 0.055);
  --panel-border: rgba(255, 255, 255, 0.12);
  --text: #e9f3ff;
  --muted: rgba(233, 243, 255, 0.55);
  --gold: #ffd98a;
  --green: #6ee7a8;
  --red: #ff8a8a;
  --blue: #8fc7ff;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body { margin: 0; min-height: 100%; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Segoe UI', 'Microsoft YaHei', system-ui, sans-serif;
  font-size: 14px;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--gold); text-decoration: none; }
a:hover { text-decoration: underline; }
button, input, select, textarea { font-family: inherit; }

.adm-bg { position: fixed; inset: 0; z-index: -1;
  background:
    radial-gradient(900px 500px at 12% -10%, rgba(255, 200, 120, 0.16), transparent 60%),
    radial-gradient(800px 500px at 90% 0%, rgba(120, 180, 255, 0.12), transparent 55%),
    linear-gradient(180deg, #0c1a29 0%, #08121c 100%);
}

/* loading / forbidden */
.adm-loading { position: fixed; inset: 0; z-index: 100; display: flex; flex-direction: column;
  align-items: center; justify-content: center; gap: 16px; color: var(--muted); letter-spacing: 2px; font-size: 13px;
  background: var(--bg); }
.adm-spinner { width: 32px; height: 32px; border-radius: 50%; border: 3px solid rgba(255, 255, 255, 0.18);
  border-top-color: var(--gold); animation: spin .9s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

.forbidden { position: fixed; inset: 0; display: flex; align-items: center; justify-content: center; padding: 20px; }
.forbidden-card { text-align: center; max-width: 420px; padding: 40px 34px; border-radius: 22px;
  background: var(--panel); border: 1px solid var(--panel-border); backdrop-filter: blur(16px); }
.forbidden-icon { font-size: 44px; }
.forbidden-card h1 { font-size: 22px; margin: 16px 0 10px; letter-spacing: 2px; }
.forbidden-card p { color: var(--muted); line-height: 1.8; margin: 0 0 22px; }
.forbidden-actions { display: flex; gap: 10px; justify-content: center; }

/* header */
.adm-header { position: sticky; top: 0; z-index: 20; display: flex; align-items: center; justify-content: space-between;
  gap: 16px; padding: 14px 28px; background: rgba(8, 18, 28, 0.78); border-bottom: 1px solid var(--panel-border);
  backdrop-filter: blur(14px); }
.adm-brand { font-size: 18px; font-weight: 800; letter-spacing: 4px; color: #fff; }
.adm-brand span { margin-left: 10px; font-size: 12px; font-weight: 500; letter-spacing: 2px; color: var(--muted); }
.adm-user { display: flex; align-items: center; gap: 14px; font-size: 13px; color: var(--muted); }
.adm-user #admUserName { color: var(--text); }
.adm-user button { border: 1px solid var(--panel-border); background: transparent; color: var(--muted);
  padding: 6px 12px; border-radius: 999px; cursor: pointer; font-size: 12px; }
.adm-user button:hover { color: var(--red); border-color: rgba(255, 138, 138, 0.5); }

/* layout */
.adm-main { max-width: 1240px; margin: 0 auto; padding: 26px 24px 70px; display: flex; flex-direction: column; gap: 22px; }
.adm-stats { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px; }
.stat-card { padding: 18px 20px; border-radius: 16px; background: var(--panel); border: 1px solid var(--panel-border); }
.stat-label { font-size: 12px; letter-spacing: 1px; color: var(--muted); }
.stat-value { margin-top: 8px; font-size: 26px; font-weight: 800; color: var(--gold); font-variant-numeric: tabular-nums; }
.stat-value.small { font-size: 18px; }

.adm-panel { border-radius: 18px; background: var(--panel); border: 1px solid var(--panel-border); overflow: hidden; }
.panel-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; padding: 18px 20px;
  border-bottom: 1px solid var(--panel-border); flex-wrap: wrap; }
.panel-head h2 { margin: 0; font-size: 16px; letter-spacing: 2px; color: #fff; }
.panel-desc { margin: 7px 0 0; font-size: 12px; line-height: 1.6; color: var(--muted); }
.panel-actions { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.search-input { width: 190px; padding: 9px 12px; border-radius: 10px; border: 1px solid var(--panel-border);
  background: rgba(0, 0, 0, 0.22); color: var(--text); font-size: 13px; outline: none; }
.search-input:focus { border-color: rgba(255, 217, 138, 0.5); }

/* buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 6px; padding: 9px 14px;
  border-radius: 10px; border: 1px solid var(--panel-border); background: rgba(255, 255, 255, 0.05);
  color: var(--text); font-size: 13px; cursor: pointer; transition: all .16s; user-select: none; }
.btn:hover { background: rgba(255, 255, 255, 0.11); border-color: rgba(255, 255, 255, 0.24); }
.btn.primary { background: linear-gradient(135deg, #ffd98a, #ffb45e); border-color: transparent; color: #3a2408; font-weight: 700; }
.btn.primary:hover { filter: brightness(1.06); }
.btn:disabled { opacity: .55; cursor: default; }
.btn.danger { color: var(--red); border-color: rgba(255, 138, 138, 0.3); }

/* table */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; min-width: 980px; }
th, td { padding: 12px 16px; text-align: left; border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  vertical-align: middle; }
th { font-size: 11.5px; font-weight: 600; letter-spacing: 1px; color: var(--muted); text-transform: uppercase;
  background: rgba(0, 0, 0, 0.12); white-space: nowrap; }
tbody tr:hover { background: rgba(255, 255, 255, 0.03); }
tbody tr:last-child td { border-bottom: 0; }
td { font-size: 13px; }
td .u-name { font-weight: 700; color: #fff; }
td .u-sub { margin-top: 3px; font-size: 11.5px; color: var(--muted); }
td.num { font-variant-numeric: tabular-nums; color: var(--gold); font-weight: 600; }
td.muted { color: var(--muted); font-size: 12px; white-space: nowrap; }
td.empty { padding: 40px 16px; text-align: center; color: var(--muted); }
.ops-col { width: 1%; white-space: nowrap; }
td.ops { white-space: nowrap; }
td.ops button { display: inline-block; margin: 2px 3px 2px 0; padding: 5px 9px; font-size: 11.5px; border-radius: 7px; border: 1px solid var(--panel-border);
  background: rgba(255, 255, 255, 0.04); color: var(--muted); cursor: pointer; white-space: nowrap; }
td.ops button:hover { color: #fff; border-color: rgba(255, 255, 255, 0.3); }
td.ops button.danger { color: var(--red); border-color: rgba(255, 138, 138, 0.28); }
td.ops button.danger:hover { background: rgba(255, 80, 80, 0.14); }

.badge { display: inline-block; padding: 3px 9px; border-radius: 999px; font-size: 11px; letter-spacing: .5px; }
.badge.admin { color: #3a2408; background: var(--gold); font-weight: 700; }
.badge.user { color: var(--blue); background: rgba(143, 199, 255, 0.12); border: 1px solid rgba(143, 199, 255, 0.25); }
.badge.active { color: var(--green); background: rgba(110, 231, 168, 0.1); border: 1px solid rgba(110, 231, 168, 0.25); }
.badge.disabled { color: var(--red); background: rgba(255, 138, 138, 0.1); border: 1px solid rgba(255, 138, 138, 0.22); }
.q-text { max-width: 420px; }
.q-options { max-width: 320px; color: var(--muted); font-size: 12px; line-height: 1.6; }

/* modal */
.adm-modal-mask { position: fixed; inset: 0; z-index: 200; display: none; align-items: center; justify-content: center;
  padding: 20px; background: rgba(3, 9, 15, 0.68); backdrop-filter: blur(6px); }
.adm-modal-mask.active { display: flex; }
.adm-modal { position: relative; width: min(460px, 100%); max-height: 90vh; overflow-y: auto;
  padding: 26px 26px 22px; border-radius: 20px; background: #0f2033; border: 1px solid var(--panel-border);
  box-shadow: 0 30px 90px rgba(0, 0, 0, 0.55); animation: modalIn .24s cubic-bezier(.2,.8,.3,1); }
@keyframes modalIn { from { opacity: 0; transform: translateY(12px) scale(.98); } to { opacity: 1; transform: none; } }
.adm-modal h2 { margin: 0 0 18px; font-size: 17px; letter-spacing: 2px; color: #fff; }
.modal-close { position: absolute; top: 14px; right: 16px; cursor: pointer; color: var(--muted); font-size: 16px; }
.modal-close:hover { color: #fff; }

.adm-form { display: flex; flex-direction: column; gap: 13px; }
.adm-form label { display: flex; flex-direction: column; gap: 6px; font-size: 12px; color: var(--muted); letter-spacing: .5px; }
.adm-form input, .adm-form select, .adm-form textarea { width: 100%; padding: 11px 12px; border-radius: 10px;
  border: 1px solid var(--panel-border); background: rgba(0, 0, 0, 0.24); color: var(--text);
  font-size: 14px; outline: none; resize: vertical; }
.adm-form input:focus, .adm-form select:focus, .adm-form textarea:focus {
  border-color: rgba(255, 217, 138, 0.55); box-shadow: 0 0 0 3px rgba(255, 217, 138, 0.12); }
.form-error { min-height: 18px; font-size: 12px; color: var(--red); }
.form-actions { display: flex; justify-content: flex-end; gap: 9px; margin-top: 4px; }

.cred-tip { margin: -6px 0 16px; font-size: 12px; line-height: 1.7; color: var(--muted); }
.cred-row { display: flex; align-items: center; gap: 12px; padding: 11px 13px; margin-bottom: 9px;
  border-radius: 10px; background: rgba(0, 0, 0, 0.24); border: 1px solid var(--panel-border); }
.cred-row span { width: 60px; flex-shrink: 0; font-size: 12px; color: var(--muted); }
.cred-row code { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 15px; color: var(--gold);
  word-break: break-all; user-select: all; }

/* toast */
.adm-toast { position: fixed; left: 50%; bottom: 28px; z-index: 300; transform: translate(-50%, 16px);
  padding: 11px 20px; border-radius: 999px; background: rgba(16, 32, 48, 0.96); border: 1px solid var(--panel-border);
  color: var(--text); font-size: 13px; opacity: 0; pointer-events: none; transition: all .22s; max-width: 88vw; }
.adm-toast.show { opacity: 1; transform: translate(-50%, 0); }
.adm-toast.ok { border-color: rgba(110, 231, 168, 0.4); }
.adm-toast.error { border-color: rgba(255, 138, 138, 0.5); color: #ffd1d1; }

@media (max-width: 900px) {
  .adm-stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .adm-header { padding: 12px 16px; }
  .adm-main { padding: 18px 14px 60px; }
  .panel-head { padding: 15px 16px; }
  .search-input { width: 100%; }
  .panel-actions { width: 100%; }
}
@media (max-width: 520px) {
  .adm-brand span { display: none; }
  .adm-user { gap: 9px; font-size: 12px; }
  .adm-user #admUserName { display: none; }
  .adm-stats { grid-template-columns: 1fr 1fr; }
  .stat-value { font-size: 21px; }
  .stat-value.small { font-size: 15px; }
}