:root {
  --bg: #f3f5f7; --panel: #ffffff; --ink: #1e2a32; --muted: #74838f;
  --accent: #0f6e6e; --accent2: #c9a050; --line: #dde4e9; --ok: #2e7d32; --warn: #c62828;
  --header: #12242c; --header-hi: #1f3a45; --header-ink: #e8f0f2; --header-mut: #a9c0c9;
}
* { box-sizing: border-box; }
body { margin: 0; font-family: 'Segoe UI', system-ui, sans-serif; background: var(--bg); color: var(--ink); font-size: 14px; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

header { background: var(--header); color: var(--header-ink); display: flex; align-items: center; gap: 24px; padding: 0 20px; height: 52px; }
header .logo { font-size: 18px; font-weight: 700; letter-spacing: 1px; color: var(--header-ink); }
header .logo span { color: var(--accent2); }
header nav { display: flex; gap: 4px; flex: 1; }
header nav a { color: var(--header-mut); padding: 6px 12px; border-radius: 6px; font-weight: 500; }
header nav a:hover, header nav a.active { background: var(--header-hi); color: #fff; text-decoration: none; }
header .userbox { font-size: 12px; color: var(--header-mut); }
header .userbox a { color: var(--header-mut); margin-left: 8px; }
.menu-btn { display: none; background: var(--header-hi); color: var(--header-ink); border: none;
            border-radius: 8px; padding: 8px 14px; font-size: 14px; cursor: pointer; }

main { max-width: 1280px; margin: 0 auto; padding: 20px; }
h1 { font-size: 20px; margin: 4px 0 16px; }
h2 { font-size: 15px; margin: 20px 0 8px; color: var(--muted); text-transform: uppercase; letter-spacing: .5px; }

.cards { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 20px; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: 10px; padding: 14px 18px; min-width: 170px; }
.card .big { font-size: 24px; font-weight: 700; margin-top: 2px; }
.card .lbl { color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: .5px; }

table { width: 100%; border-collapse: separate; border-spacing: 0; background: var(--panel); border: 1px solid var(--line); border-radius: 10px; }
th, td { padding: 7px 10px; text-align: left; border-bottom: 1px solid var(--line); white-space: nowrap; }
th { background: #e9eff2; font-size: 12px; text-transform: uppercase; letter-spacing: .4px; color: var(--muted); position: sticky; top: 0; z-index: 5; }
tr:hover td { background: #f4f9fa; }
td.num, th.num { text-align: right; }
.wrap { white-space: normal; }

.searchbar { display: flex; gap: 8px; margin-bottom: 14px; align-items: center; flex-wrap: wrap; }
.searchbar input[type=text] { padding: 8px 12px; border: 1px solid var(--line); border-radius: 8px; width: 320px; font-size: 14px; background: var(--panel); }
.searchbar select { padding: 8px 10px; border: 1px solid var(--line); border-radius: 8px; font-size: 14px; background: var(--panel); color: var(--ink); }
.badge.partial { background: #f5e9d0; color: #8a5a00; }
.searchbar button, .btn { padding: 8px 16px; background: var(--accent); border: none; color: #fff; border-radius: 8px; font-size: 14px; cursor: pointer; }
.searchbar label { color: var(--muted); }
.count { color: var(--muted); margin-left: auto; }

.badge { display: inline-block; padding: 2px 8px; border-radius: 10px; font-size: 11px; font-weight: 600; background: #e2ebee; color: #46606c; }
.badge.paid { background: #e2efe3; color: var(--ok); }
.badge.open { background: #fdeaea; color: var(--warn); }

.pager { margin: 14px 0; display: flex; gap: 10px; align-items: center; color: var(--muted); }

.detail-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 4px 24px; background: var(--panel); border: 1px solid var(--line); border-radius: 10px; padding: 14px 18px; margin-bottom: 18px; }
.detail-grid div { padding: 3px 0; }
.detail-grid .lbl { color: var(--muted); font-size: 11px; text-transform: uppercase; letter-spacing: .4px; }

/* ---------- mobile ---------- */
@media (max-width: 900px) {
  header { height: auto; flex-wrap: wrap; padding: 8px 12px; gap: 6px; }
  header .logo { font-size: 16px; }
  header .userbox { margin-left: auto; }
  .menu-btn { display: inline-block; }
  header nav { display: none; }
  header nav.open { display: flex; flex-direction: column; order: 3;
                    flex: 0 0 100%; width: 100%; min-width: 100%;
                    gap: 2px; padding: 6px 0 4px; border-top: 1px solid var(--header-hi); }
  header nav a { padding: 11px 12px; font-size: 15px; border-radius: 8px; }

  main { padding: 10px; }
  h1 { font-size: 17px; line-height: 1.6; }
  h1 a { display: inline-block; margin-top: 4px; }

  table { display: block; max-height: 78vh; overflow: auto; -webkit-overflow-scrolling: touch; }
  th, td { padding: 7px 7px; font-size: 12px; }
  th { font-size: 10px; }

  .searchbar { gap: 6px; }
  .searchbar input[type=text] { width: 100% !important; flex: 1 1 140px; }
  .searchbar select { flex: 1 1 44%; min-width: 0; }
  .searchbar button { flex: 1 1 30%; }
  .count { margin-left: 0; width: 100%; font-size: 12px; }

  .cards { gap: 8px; }
  .card { min-width: 0; flex: 1 1 44%; padding: 10px 12px; }
  .card .big { font-size: 19px; }

  .detail-grid { grid-template-columns: 1fr 1fr; padding: 10px 12px; }
  .login-box { width: 92vw; max-width: 340px; padding: 22px; }
}

.login-wrap { display: flex; justify-content: center; padding-top: 10vh; }
.login-box { background: var(--panel); border: 1px solid var(--line); border-radius: 12px; padding: 32px; width: 340px; }
.login-box h1 { text-align: center; }
.login-box input { width: 100%; padding: 10px 12px; margin: 6px 0 14px; border: 1px solid var(--line); border-radius: 8px; font-size: 15px; }
.login-box button { width: 100%; padding: 11px; }
.error { color: var(--warn); margin-bottom: 10px; }
.note { color: var(--muted); font-size: 12px; margin-top: 12px; text-align: center; }