:root {
  --bg: #f4f5f8; --card: #fff; --ink: #1c1f26; --muted: #8a8f9c;
  --line: #e6e8ee; --pri: #2f6bff; --danger: #f5576c; --ok: #16a06a; --warn: #f5a623;
}
* { box-sizing: border-box; }
body { margin: 0; font-family: 'Pretendard', -apple-system, system-ui, sans-serif; background: var(--bg); color: var(--ink); }
.hidden { display: none !important; }
.muted { color: var(--muted); font-size: 13px; }

.adm-top { display: flex; align-items: center; justify-content: space-between;
  padding: 12px 20px; background: var(--card); border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 10; }
.adm-brand { font-size: 20px; font-weight: 900; }
.adm-brand span { color: var(--pri); }
.adm-user { display: flex; align-items: center; gap: 12px; }
.adm-link { color: var(--muted); text-decoration: none; font-size: 13px; }
.adm-link:hover { color: var(--ink); }

.adm-btn { border: 1px solid var(--line); background: var(--card); color: var(--ink);
  padding: 8px 14px; border-radius: 8px; cursor: pointer; font-size: 13px; font-weight: 600; }
.adm-btn:hover { border-color: #c9cdd6; }
.adm-btn.primary { background: var(--pri); color: #fff; border-color: var(--pri); }
.adm-btn.danger { background: var(--danger); color: #fff; border-color: var(--danger); }
.adm-btn.ghost { background: transparent; }
.adm-btn.sm { padding: 5px 10px; font-size: 12px; }

.adm-gate { display: flex; justify-content: center; padding-top: 12vh; }
.gate-card { background: var(--card); padding: 32px; border-radius: 16px; width: 340px;
  box-shadow: 0 10px 40px rgba(0,0,0,.08); display: flex; flex-direction: column; gap: 12px; }
.gate-card h2 { margin: 0; }
.gate-card input { padding: 12px; border: 1px solid var(--line); border-radius: 10px; font-size: 14px; }
.gate-err { color: var(--danger); font-size: 13px; min-height: 18px; }

.adm-main { max-width: 1080px; margin: 0 auto; padding: 20px; }
.adm-tabs { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 18px; }
.tab { border: none; background: transparent; padding: 9px 16px; border-radius: 20px;
  cursor: pointer; font-size: 14px; font-weight: 600; color: var(--muted); }
.tab.active { background: var(--ink); color: #fff; }

.adm-panel { display: flex; flex-direction: column; gap: 16px; }

.stat-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 12px; }
.stat { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 16px 18px; }
.stat .n { font-size: 28px; font-weight: 900; }
.stat .l { color: var(--muted); font-size: 13px; margin-top: 4px; }
.stat.alert .n { color: var(--danger); }

.spark { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 16px 18px; }
.spark h3 { margin: 0 0 12px; font-size: 14px; }
.bars { display: flex; align-items: flex-end; gap: 6px; height: 80px; }
.bars .bar { flex: 1; background: var(--pri); border-radius: 4px 4px 0 0; min-height: 3px; opacity: .85; }
.bars .bar span { display: block; text-align: center; font-size: 10px; color: var(--muted); margin-top: 84px; }

.toolbar { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.toolbar input, .toolbar select { padding: 8px 10px; border: 1px solid var(--line); border-radius: 8px; font-size: 13px; }

.card-table { background: var(--card); border: 1px solid var(--line); border-radius: 14px; overflow-x: auto; -webkit-overflow-scrolling: touch; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { text-align: left; padding: 10px 14px; border-bottom: 1px solid var(--line); }
th { background: #fafbfc; color: var(--muted); font-weight: 600; }
tr:last-child td { border-bottom: none; }
td .row-actions { display: flex; gap: 6px; }

.badge { display: inline-block; padding: 2px 9px; border-radius: 20px; font-size: 11px; font-weight: 700; }
.badge.admin { background: #eef2ff; color: var(--pri); }
.badge.user { background: #f1f2f5; color: var(--muted); }
.badge.banned { background: #ffeaee; color: var(--danger); }
.badge.active { background: #e7f7ef; color: var(--ok); }
.badge.reserved { background: #fff3e0; color: var(--warn); }
.badge.closed { background: #f1f2f5; color: var(--muted); }
.badge.open { background: #ffeaee; color: var(--danger); }
.badge.resolved { background: #e7f7ef; color: var(--ok); }
.badge.dismissed { background: #f1f2f5; color: var(--muted); }

.empty { padding: 40px; text-align: center; color: var(--muted); }
.loading { padding: 40px; text-align: center; color: var(--muted); }

/* 반응형: 태블릿/모바일 */
@media (max-width: 768px) {
  .adm-top { padding: 10px 14px; }
  .adm-brand { font-size: 18px; }
  .adm-main { padding: 14px; }
  .adm-tabs { gap: 4px; overflow-x: auto; flex-wrap: nowrap; -webkit-overflow-scrolling: touch; padding-bottom: 4px; }
  .adm-tabs::-webkit-scrollbar { display: none; }
  .tab { flex: 0 0 auto; padding: 8px 13px; font-size: 13px; }
  .stat-grid { grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); }
  table th, table td { padding: 8px 10px; }
  th, td { white-space: nowrap; }
}
@media (max-width: 420px) {
  .adm-user { gap: 8px; }
  .adm-user .muted { display: none; }
  .gate-card { width: calc(100vw - 32px); }
  .stat .n { font-size: 22px; }
}