:root {
  --bg: #f6f7f9;
  --surface: #ffffff;
  --border: #e5e7eb;
  --text: #1f2430;
  --text-muted: #6b7280;
  --primary: #4f46e5;
  --primary-dark: #4338ca;
  --danger: #dc2626;
  --radius: 8px;
  --shadow: 0 1px 2px rgba(0,0,0,.05), 0 1px 3px rgba(0,0,0,.06);
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
}
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

.topbar {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  height: 56px;
  position: sticky;
  top: 0;
  z-index: 20;
}
.topbar .brand { font-weight: 700; font-size: 16px; color: var(--text); display:flex; align-items:center; gap:8px; }
.topbar .brand .dot { width:10px;height:10px;border-radius:3px;background:var(--primary); display:inline-block;}
.topbar nav { display: flex; gap: 4px; align-items: center; }
.topbar nav a {
  color: var(--text-muted);
  padding: 8px 12px;
  border-radius: var(--radius);
  font-weight: 500;
}
.topbar nav a:hover, .topbar nav a.active { background: var(--bg); color: var(--text); text-decoration:none; }
.topbar .user-menu { display:flex; align-items:center; gap:10px; }
.avatar {
  width: 30px; height: 30px; border-radius: 50%;
  background: var(--primary); color:#fff; display:flex; align-items:center; justify-content:center;
  font-size: 12px; font-weight:700; flex-shrink:0;
}

.layout { max-width: 1280px; margin: 0 auto; padding: 24px 20px 60px; }
.page-header { display:flex; align-items:center; justify-content:space-between; margin-bottom: 20px; flex-wrap: wrap; gap:12px;}
.page-header h1 { margin: 0; font-size: 22px; }
.page-header .sub { color: var(--text-muted); font-size: 13px; margin-top:4px; }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.card + .card { margin-top: 16px; }
.card-header { padding: 14px 18px; border-bottom: 1px solid var(--border); font-weight: 600; display:flex; align-items:center; justify-content:space-between;}
.card-body { padding: 18px; }

.btn {
  display: inline-flex; align-items:center; gap:6px;
  background: var(--primary); color: #fff; border: none;
  padding: 9px 16px; border-radius: var(--radius); font-size: 14px; font-weight: 600;
  cursor: pointer; text-decoration:none;
}
.btn:hover { background: var(--primary-dark); text-decoration:none; }
.btn.secondary { background: var(--surface); color: var(--text); border: 1px solid var(--border); }
.btn.secondary:hover { background: var(--bg); }
.btn.danger { background: var(--danger); }
.btn.danger:hover { background: #b91c1c; }
.btn.small { padding: 5px 10px; font-size: 12px; }
.btn[disabled] { opacity:.5; cursor:not-allowed; }

table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--border); vertical-align: middle;}
th { font-size: 12px; text-transform: uppercase; letter-spacing:.04em; color: var(--text-muted); background: #fafbfc; }
tr:hover td { background: #fafbff; }
.table-wrap { overflow-x:auto; }

.badge {
  display: inline-block; padding: 3px 9px; border-radius: 999px; font-size: 12px; font-weight: 600;
}
.pill { padding: 2px 8px; border-radius:6px; font-size:11px; font-weight:700; color:#fff; }

.form-group { margin-bottom: 16px; }
label { display: block; font-weight: 600; margin-bottom: 6px; font-size: 13px; }
label .req { color: var(--danger); }
input[type=text], input[type=password], input[type=email], input[type=date], input[type=number], input[type=url], input[type=search],
select, textarea {
  width: 100%; padding: 9px 12px; border: 1px solid var(--border); border-radius: var(--radius);
  font-size: 14px; background: #fff; color: var(--text); font-family: inherit;
}
textarea { resize: vertical; min-height: 90px; }
input:focus, select:focus, textarea:focus { outline: 2px solid #c7d2fe; border-color: var(--primary); }
.form-row { display: flex; gap: 16px; flex-wrap: wrap; }
.form-row > .form-group { flex: 1; min-width: 200px; }
.help-text { color: var(--text-muted); font-size: 12px; margin-top: 4px; }
.checkbox-line { display:flex; align-items:center; gap:8px; }
.checkbox-line input { width:auto; }

.alert { padding: 12px 16px; border-radius: var(--radius); margin-bottom: 16px; font-size: 14px; border: 1px solid transparent;}
.alert.success { background: #ecfdf5; color: #065f46; border-color: #a7f3d0; }
.alert.error { background: #fef2f2; color: #991b1b; border-color: #fecaca; }
.alert.info { background: #eff6ff; color: #1e40af; border-color: #bfdbfe; }

.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 14px; margin-bottom: 20px; }
.stat-card { background: var(--surface); border:1px solid var(--border); border-radius: var(--radius); padding: 16px; box-shadow: var(--shadow); }
.stat-card .num { font-size: 26px; font-weight: 700; }
.stat-card .label { color: var(--text-muted); font-size: 12px; text-transform: uppercase; letter-spacing:.03em; }

.filters { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 16px; align-items:flex-end; }
.filters .form-group { margin-bottom:0; min-width:150px;}

.tabs { display:flex; gap: 4px; border-bottom: 1px solid var(--border); margin-bottom:18px; }
.tabs a { padding: 10px 14px; color: var(--text-muted); font-weight:600; border-bottom: 2px solid transparent; }
.tabs a.active { color: var(--primary); border-color: var(--primary); }

.pagination { display:flex; gap:6px; margin-top: 16px; align-items:center; }
.pagination a, .pagination span { padding: 6px 11px; border-radius: 6px; border:1px solid var(--border); color:var(--text); font-size:13px;}
.pagination a:hover { background: var(--bg); text-decoration:none;}
.pagination .current { background: var(--primary); color:#fff; border-color:var(--primary); }

.issue-meta { display:flex; flex-wrap:wrap; gap: 8px 20px; color: var(--text-muted); font-size: 13px; margin: 10px 0 20px;}
.issue-meta strong { color: var(--text); }
.comment { border-bottom: 1px solid var(--border); padding: 14px 0; }
.comment:last-child { border-bottom:none; }
.comment-head { display:flex; gap:10px; align-items:center; margin-bottom: 6px; font-size: 13px; color: var(--text-muted);}
.comment-body { white-space: pre-wrap; line-height:1.5; }

.empty-state { text-align:center; padding: 50px 20px; color: var(--text-muted); }
.footer-note { text-align:center; color: var(--text-muted); font-size:12px; margin-top: 40px; }

.login-wrap { min-height: 100vh; display:flex; align-items:center; justify-content:center; background: linear-gradient(135deg,#eef2ff,#f6f7f9); }
.login-card { width: 380px; background:#fff; border-radius: 12px; box-shadow: 0 10px 30px rgba(0,0,0,.08); padding: 32px; }
.login-card h1 { font-size: 20px; margin: 0 0 4px; text-align:center; }
.login-card .sub { text-align:center; color: var(--text-muted); font-size:13px; margin-bottom:22px;}

.action-icons a { margin-right: 10px; font-size: 13px; }
.text-muted { color: var(--text-muted); }
.mt-0{margin-top:0} .mb-0{margin-bottom:0}