/* 管理后台样式 */
.admin-body { background: #0b0d14; min-height: 100vh; }
.admin-login { max-width: 500px; margin: 0 auto; padding: 100px 24px 80px; }
.admin-login__card { background: var(--card); border: 1px solid var(--border); border-radius: 22px; padding: 44px 44px 40px; }
.admin-login__card h1 { font-size: 26px; font-weight: 800; margin-bottom: 8px; }
.admin-login__card .sub { color: var(--muted); margin-bottom: 28px; font-size: 15px; }
.admin-field { margin-bottom: 16px; }
.admin-field label { display: block; font-size: 13px; color: var(--muted); margin-bottom: 6px; }
.admin-field input { width: 100%; background: var(--code-bg); border: 1px solid var(--border); color: var(--text); border-radius: 12px; padding: 12px 14px; font-size: 15px; }
.admin-field input:focus { outline: none; border-color: var(--accent); }

.admin-shell { display: grid; grid-template-columns: 220px 1fr; min-height: 100vh; }
.admin-side { background: #0e1018; border-right: 1px solid var(--border); padding: 24px 0; position: sticky; top: 0; height: 100vh; }
.admin-side__brand { padding: 0 20px 24px; font-weight: 800; font-size: 15px; display: flex; align-items: center; gap: 8px; }
.admin-side__nav { display: flex; flex-direction: column; gap: 4px; padding: 0 12px; }
.admin-nav-btn { background: transparent; border: none; color: var(--muted); text-align: left; padding: 11px 14px; border-radius: 10px; font-size: 14px; font-weight: 600; cursor: pointer; transition: background .2s, color .2s; }
.admin-nav-btn:hover { color: var(--text); background: rgba(255,255,255,.04); }
.admin-nav-btn.is-active { color: #fff; background: linear-gradient(135deg, rgba(47,124,246,.25), rgba(139,92,246,.2)); }
.admin-side__foot { position: absolute; bottom: 20px; left: 12px; right: 12px; }
.admin-main { padding: 28px 32px 60px; overflow-x: auto; }
.admin-top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 28px; flex-wrap: wrap; gap: 12px; }
.admin-top h1 { font-size: 24px; font-weight: 800; }

.admin-stats { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 14px; margin-bottom: 28px; }
.admin-stat { background: var(--card); border: 1px solid var(--border); border-radius: 14px; padding: 18px; }
.admin-stat b { display: block; font-size: 28px; font-weight: 800; margin-bottom: 4px; }
.admin-stat span { font-size: 13px; color: var(--muted); }

.admin-panel { display: none; }
.admin-panel.is-active { display: block; }
.admin-card { background: var(--card); border: 1px solid var(--border); border-radius: 16px; padding: 22px; margin-bottom: 20px; }
.admin-card h2 { font-size: 16px; font-weight: 700; margin-bottom: 16px; }
.admin-form { display: flex; gap: 12px; flex-wrap: wrap; align-items: flex-end; }
.admin-form .admin-field { margin-bottom: 0; flex: 1; min-width: 120px; }
.admin-form .admin-field input, .admin-form .admin-field select { width: 100%; }

.admin-table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: 12px; }
.admin-table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
.admin-table th, .admin-table td { padding: 11px 14px; text-align: left; border-bottom: 1px solid var(--border); white-space: nowrap; }
.admin-table th { color: var(--muted); font-weight: 600; background: rgba(255,255,255,.02); }
.admin-table tr:last-child td { border-bottom: none; }
.admin-table code { font-family: ui-monospace, Menlo, monospace; font-size: 12px; color: #a8d0ff; }
.admin-table .mono { font-family: ui-monospace, Menlo, monospace; font-size: 12px; max-width: 200px; overflow: hidden; text-overflow: ellipsis; }

.pill { display: inline-block; font-size: 11px; font-weight: 700; padding: 3px 9px; border-radius: 999px; }
.pill--ok { color: #34d399; background: rgba(52,211,153,.12); }
.pill--warn { color: #fbbf24; background: rgba(251,191,36,.12); }
.pill--bad { color: #f87171; background: rgba(248,113,113,.12); }
.pill--muted { color: var(--muted); background: rgba(255,255,255,.06); }

.btn--danger { color: #f87171; border-color: rgba(248,113,113,.35); }
.btn--danger:hover { background: rgba(248,113,113,.1); }
.btn--xs { padding: 5px 10px; font-size: 12px; }
.btn:disabled { opacity: .45; cursor: not-allowed; }

/* 批量操作工具条 */
.admin-bulkbar { display: flex; align-items: center; gap: 12px; margin: -4px 0 14px; }
.admin-bulkbar__count { font-size: 13px; color: var(--muted); }
.admin-table input[type="checkbox"] { width: 16px; height: 16px; accent-color: var(--accent, #2f7cf6); cursor: pointer; vertical-align: middle; }

.codes-result { margin-top: 16px; display: none; }
.codes-result.show { display: block; }
.codes-result textarea { width: 100%; min-height: 100px; background: #0a0c18; border: 1px solid var(--border); color: #a8d0ff; border-radius: 10px; padding: 12px; font-family: ui-monospace, Menlo, monospace; font-size: 13px; resize: vertical; }

/* 编辑弹窗 */
.admin-modal { position: fixed; inset: 0; z-index: 200; display: flex; align-items: center; justify-content: center; padding: 24px; }
.admin-modal[hidden] { display: none; }
.admin-modal__backdrop { position: absolute; inset: 0; background: rgba(0,0,0,.55); backdrop-filter: blur(2px); }
.admin-modal__card { position: relative; z-index: 1; width: 100%; max-width: 640px; max-height: 88vh; overflow-y: auto; background: var(--card); border: 1px solid var(--border); border-radius: 18px; padding: 28px; }
.admin-modal__card h2 { font-size: 18px; font-weight: 800; }
.admin-modal__card textarea { background: var(--code-bg); border: 1px solid var(--border); color: var(--text); border-radius: 10px; padding: 10px 12px; font-size: 14px; resize: vertical; font-family: inherit; }
.admin-modal__card textarea:focus { outline: none; border-color: var(--accent); }

@media (max-width: 860px) {
  .admin-shell { grid-template-columns: 1fr; }
  .admin-side { position: static; height: auto; border-right: none; border-bottom: 1px solid var(--border); }
  .admin-side__foot { position: static; margin-top: 16px; }
  .admin-side__nav { flex-direction: row; flex-wrap: wrap; }
}