:root {
  --bg: #0f1220;
  --card: #1a1e2e;
  --border: #2a2f45;
  --text: #e8eaf2;
  --muted: #9aa1b5;
  --accent: #7c6cf0;
  --accent2: #4bc0c0;
  --danger: #e05555;
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font-family: -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 15px;
}
header {
  display: flex; justify-content: space-between; align-items: center; gap: 12px;
  height: 56px; padding: 0 24px; border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 20;
  background: rgba(15,18,32,.95); backdrop-filter: blur(6px);
}
header h1 { margin: 0; font-size: 19px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
main { max-width: 1680px; margin: 0 auto; padding: 20px 24px 60px; }
h2 { font-size: 16px; margin: 0 0 12px; }
.muted { color: var(--muted); }
.small { font-size: 12.5px; }
.card {
  background: var(--card); border: 1px solid var(--border); border-radius: 12px;
  padding: 18px; margin-bottom: 18px;
}
.center-body { display: flex; align-items: center; justify-content: center; min-height: 100vh; }
.login-card { width: 360px; }
.login-card h1 { margin-top: 0; }
label { display: block; margin-bottom: 10px; color: var(--muted); font-size: 13px; }
input[type=text], input[type=email], input[type=password], input[type=date], input[type=search] {
  width: 100%; padding: 9px 11px; border-radius: 8px; border: 1px solid var(--border);
  background: #121522; color: var(--text); font-size: 14px; margin-top: 4px;
}
input[type=file] { color: var(--muted); margin: 8px 0; }
.btn {
  display: inline-block; background: var(--accent); color: #fff; border: 0; border-radius: 8px;
  padding: 9px 16px; font-size: 14px; cursor: pointer; text-decoration: none;
}
.btn:hover { filter: brightness(1.1); }
.btn-ghost { background: transparent; border: 1px solid var(--border); color: var(--text); }
.btn-danger { background: var(--danger); padding: 6px 12px; }
.btn-excel { background: #1e7a45; }
.btn-excel:hover { filter: brightness(1.15); }
.btn-pdf { background: #c0392b; }
.btn-pdf:hover { filter: brightness(1.15); }
.contact-link { color: var(--text); text-decoration: none; border-bottom: 1px dotted var(--muted); }
.contact-link:hover { color: var(--accent2); }
.xbtn { color: var(--muted); text-decoration: none; font-weight: 700; padding: 2px 7px; border-radius: 6px; }
.xbtn:hover { color: #fff; background: var(--danger); }
.initiator-row { display: flex; gap: 4px; min-height: 64px; border-radius: 10px; overflow: hidden; }
.initiator { display: flex; flex-direction: column; align-items: center; justify-content: center; padding: 10px 6px; min-width: 90px; }
.initiator.me { background: rgba(124,108,240,.35); }
.initiator.them { background: rgba(75,192,192,.30); }
.initiator b { font-size: 22px; }
.initiator span { font-size: 12px; color: var(--muted); }
.error { background: rgba(224,85,85,.15); border: 1px solid var(--danger); color: #ffb3b3;
  padding: 9px 12px; border-radius: 8px; margin-bottom: 12px; }
.upload-form input[type=text] { margin-bottom: 10px; }

.cards-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(170px, 1fr)); gap: 12px; margin-bottom: 18px; }
.stat { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 14px; }
.stat-num { font-size: 24px; font-weight: 700; color: var(--accent2); }
.stat-label { color: var(--muted); font-size: 12.5px; margin-top: 2px; }

.filters { display: flex; flex-wrap: wrap; gap: 12px; align-items: end; }
.filters label { margin: 0; }
.chk { display: flex; align-items: center; gap: 5px; color: var(--text); font-size: 13.5px; cursor: pointer; }
.chk input { width: auto; }

.table-wrap { overflow-x: auto; }
.table { width: 100%; border-collapse: collapse; font-size: 14px; }
.table th, .table td { padding: 9px 12px; border-bottom: 1px solid var(--border); text-align: left; white-space: nowrap; }
.table thead th {
  color: var(--muted); font-weight: 600; cursor: pointer;
  position: sticky; top: 56px; z-index: 5; background: #1e2338;
  box-shadow: 0 1px 0 var(--border);
}
.table th.num, .table td.num { text-align: right; }
.table tr:hover td { background: rgba(124,108,240,.06); }
.total-row td {
  position: sticky; bottom: 0; background: #232842; font-weight: 700;
  border-top: 2px solid var(--accent); color: var(--text);
}

.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
@media (max-width: 900px) { .two-col { grid-template-columns: 1fr; } }

.cloud { display: flex; flex-wrap: wrap; gap: 7px; }
.tag { background: #121522; border: 1px solid var(--border); border-radius: 20px; padding: 4px 11px; font-size: 13px; }
.tag b { color: var(--accent2); font-weight: 600; }