:root {
  --bg: #f5f6f8;
  --panel: #ffffff;
  --border: #dfe3e8;
  --text: #1f2933;
  --text-muted: #697386;
  --accent: #2563eb;
  --accent-contrast: #ffffff;
  --danger: #d92d20;
  --danger-bg: #fef3f2;
  --warning: #b54708;
  --warning-bg: #fffaeb;
  --success: #067647;
  --success-bg: #ecfdf3;
  --info-bg: #eff4ff;
  --radius: 8px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  padding: 10px 20px;
}

.topbar .brand { font-weight: 600; }
.topbar nav a { margin-right: 16px; color: var(--text); }
.topbar nav a.active { color: var(--accent); font-weight: 600; }

.layout {
  display: flex;
  min-height: calc(100vh - 49px);
}

.sidebar {
  width: 240px;
  flex-shrink: 0;
  background: var(--panel);
  border-right: 1px solid var(--border);
  padding: 16px;
  overflow-y: auto;
}

.sidebar h4 { margin: 18px 0 6px; font-size: 12px; text-transform: uppercase; color: var(--text-muted); }
.sidebar ul { list-style: none; margin: 0; padding: 0; }
.sidebar li { margin: 2px 0; }
.sidebar details summary { cursor: pointer; padding: 4px 0; }
.sidebar .tree-month { padding-left: 16px; }

.main { flex: 1; padding: 20px; min-width: 0; }

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
}

.tabs { display: flex; gap: 4px; margin-bottom: 12px; border-bottom: 1px solid var(--border); }
.tabs a {
  padding: 8px 14px; color: var(--text-muted); border-bottom: 2px solid transparent;
}
.tabs a.active { color: var(--accent); border-bottom-color: var(--accent); }

table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--border); font-size: 13px; }
th { color: var(--text-muted); font-weight: 600; font-size: 12px; text-transform: uppercase; }
tr.email-group-header td { background: var(--info-bg); font-weight: 600; }
tr:hover td { background: #fafbfc; }

.badge {
  display: inline-block; padding: 2px 9px; border-radius: 999px; font-size: 12px; font-weight: 600;
}
.badge-inbox { background: var(--info-bg); color: var(--accent); }
.badge-ke_kontrole { background: var(--warning-bg); color: var(--warning); }
.badge-schvaleno { background: var(--info-bg); color: var(--accent); }
.badge-zapsano { background: var(--success-bg); color: var(--success); }
.badge-chyba_importu { background: var(--danger-bg); color: var(--danger); }
.badge-ares { background: var(--success-bg); color: var(--success); font-weight: 600; text-transform: none; font-size: 12px; }
.badge-ares-missing { background: var(--bg); color: var(--text-muted); font-weight: 500; text-transform: none; font-size: 12px; }

.row-warning-icon { color: var(--warning); margin-right: 4px; cursor: help; }

.filters { display: flex; gap: 8px; margin-bottom: 14px; flex-wrap: wrap; }
.filters a {
  padding: 6px 12px; border-radius: 999px; background: var(--panel); border: 1px solid var(--border); color: var(--text);
}
.filters a.active { background: var(--accent); color: var(--accent-contrast); border-color: var(--accent); }

.split {
  display: flex; gap: 16px; align-items: flex-start;
}
.split .preview { flex: 1; min-width: 0; position: sticky; top: 16px; }
.split .form-col { flex: 1; min-width: 0; }
.preview iframe { width: 100%; height: 80vh; border: 1px solid var(--border); border-radius: var(--radius); }

.field-group { margin-bottom: 18px; }
.field-group h4 { margin: 0; font-size: 13px; color: var(--text-muted); text-transform: uppercase; display: inline; }
.field-group summary {
  cursor: pointer; list-style: none; margin: 0 0 8px; display: flex; align-items: center; gap: 8px;
}
.field-group summary::-webkit-details-marker { display: none; }
.field-group summary::before {
  content: "▸"; color: var(--text-muted); font-size: 11px; transition: transform 0.15s;
}
.field-group[open] > summary::before { transform: rotate(90deg); }
.field-group summary .badge-ares { margin-left: auto; }
.field-row { display: flex; gap: 10px; margin-bottom: 10px; flex-wrap: wrap; }
.field { flex: 1; min-width: 160px; display: flex; flex-direction: column; gap: 4px; }
.field label { font-size: 12px; color: var(--text-muted); }
.field input, .field select, .field textarea {
  padding: 7px 9px; border: 1px solid var(--border); border-radius: 6px; font-size: 14px; font-family: inherit;
}
.field.low-confidence input, .field.low-confidence select { background: var(--warning-bg); border-color: #f0b429; }
.field .hint { font-size: 11px; color: var(--text-muted); }

.alert { padding: 10px 14px; border-radius: var(--radius); margin-bottom: 14px; font-size: 13px; }
.alert-error { background: var(--danger-bg); color: var(--danger); border: 1px solid #f3a29c; }
.alert-warning { background: var(--warning-bg); color: var(--warning); border: 1px solid #f0b429; }
.alert-success { background: var(--success-bg); color: var(--success); border: 1px solid #75d6a9; }
.alert-info { background: var(--info-bg); color: var(--accent); border: 1px solid #b6cffb; }

.btn {
  display: inline-block; padding: 8px 16px; border-radius: 6px; border: 1px solid var(--border);
  background: var(--panel); color: var(--text); cursor: pointer; font-size: 14px;
}
.btn:hover { border-color: var(--accent); }
.btn-primary { background: var(--accent); color: var(--accent-contrast); border-color: var(--accent); }
.btn-danger { background: var(--danger-bg); color: var(--danger); border-color: #f3a29c; }
.btn-sm { padding: 4px 10px; font-size: 12px; }
.btn-row { display: flex; gap: 8px; margin-top: 16px; }

.auth-page {
  display: flex; align-items: center; justify-content: center; min-height: 100vh;
}
.auth-box { width: 360px; background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 28px; }
.auth-box h1 { font-size: 18px; margin-top: 0; }
.auth-box .field { margin-bottom: 14px; }
.auth-box .btn-primary { width: 100%; text-align: center; }
.auth-box img.qr { display: block; margin: 12px auto; }
.copy-inline { display: flex; gap: 6px; align-items: center; }
.copy-inline code { background: var(--bg); padding: 4px 8px; border-radius: 6px; }

.dashboard-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 14px; margin-bottom: 20px; }
.stat-tile { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 14px 16px; }
.stat-tile .value { font-size: 26px; font-weight: 700; }
.stat-tile .label { color: var(--text-muted); font-size: 12px; text-transform: uppercase; }

@media (max-width: 900px) {
  .layout { flex-direction: column; }
  .sidebar { width: 100%; border-right: none; border-bottom: 1px solid var(--border); }
  .split { flex-direction: column; }
  .split .preview { position: static; }
}