/* ==========================================================================
   Design system inspirovaný UI.com / UniFi Network (tmavý postranní panel,
   čistá světlá pracovní plocha, zaoblené karty, tenké ohraničení, modrý
   akcent, kompaktní typografie).
   ========================================================================== */

:root {
  --ui-bg: #f4f5f7;
  --ui-card-bg: #ffffff;
  --ui-border: #e3e6ea;
  --ui-border-strong: #d3d7dd;
  --ui-text: #1b1f23;
  --ui-text-muted: #68727e;

  --ui-blue: #0559c9;
  --ui-blue-hover: #044ba8;
  --ui-blue-light: #e8f1fd;

  --ui-green: #129a5b;
  --ui-green-bg: #e6f7ee;
  --ui-red: #d9382c;
  --ui-red-bg: #fbeae8;
  --ui-amber: #b5790a;
  --ui-amber-bg: #fdf3e0;
  --ui-gray-bg: #eef0f2;
  --ui-gray-text: #4b5563;

  --ui-radius: 10px;
  --ui-radius-sm: 6px;
  --ui-radius-pill: 999px;

  --ui-sidebar-bg: #3a3f47;
  --ui-sidebar-bg-hover: #454b54;
  --ui-sidebar-bg-active: #50565f;
  --ui-sidebar-text: #b8bdc4;
  --ui-sidebar-text-active: #ffffff;
}

* { box-sizing: border-box; }

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

h1, h2, h3, h4, h5, h6 { font-weight: 600; color: var(--ui-text); letter-spacing: -0.01em; }

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

/* --------------------------------------------------------------------
   Aplikační layout: tmavý postranní panel + světlá pracovní plocha
   -------------------------------------------------------------------- */
.app-shell { display: flex; min-height: 100vh; align-items: stretch; }

.sidebar {
  width: 248px;
  flex: 0 0 248px;
  background: var(--ui-sidebar-bg);
  color: var(--ui-sidebar-text);
  display: flex;
  flex-direction: column;
  padding: 0;
  border-right: 1px solid #000;
}

.sidebar-brand {
  display: flex;
  align-items: center;
  gap: .6rem;
  padding: 1.15rem 1.25rem;
  color: #fff;
  text-decoration: none;
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: -0.01em;
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.sidebar-brand:hover { color: #fff; opacity: .92; }
.brand-mark-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: var(--ui-sidebar-bg-active);
  flex-shrink: 0;
  vertical-align: middle;
}
.brand-mark-badge-sm { width: 28px; height: 28px; border-radius: 7px; }
.sidebar-brand-mark { width: 20px; height: 20px; flex-shrink: 0; display: block; }
.topbar-mobile-mark { width: 17px; height: 17px; flex-shrink: 0; display: block; }

.sidebar-nav { flex: 1 1 auto; padding: .75rem .65rem; overflow-y: auto; }

.sidebar-link {
  display: flex;
  align-items: center;
  gap: .7rem;
  padding: .55rem .75rem;
  border-radius: var(--ui-radius-sm);
  color: var(--ui-sidebar-text);
  font-size: .875rem;
  font-weight: 500;
  margin-bottom: 2px;
  transition: background-color .12s ease, color .12s ease;
}
.sidebar-link i { font-size: 1rem; width: 1.1rem; text-align: center; flex-shrink: 0; }
.sidebar-link:hover { background: var(--ui-sidebar-bg-hover); color: #fff; text-decoration: none; }
.sidebar-link.active { background: var(--ui-sidebar-bg-active); color: #fff; font-weight: 600; box-shadow: inset 3px 0 0 var(--ui-blue); }

.sidebar-footer {
  padding: .9rem 1.1rem;
  border-top: 1px solid rgba(255,255,255,.08);
}
.sidebar-user { color: #d7dae0; font-size: .8125rem; font-weight: 500; margin-bottom: .5rem; }
.sidebar-logout {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  font-size: .8125rem;
  color: var(--ui-sidebar-text);
  border: 1px solid rgba(255,255,255,.14);
  border-radius: var(--ui-radius-sm);
  padding: .3rem .65rem;
}
.sidebar-logout:hover { color: #fff; border-color: rgba(255,255,255,.3); text-decoration: none; }
.sidebar-version { color: #5b6270; font-size: .6875rem; margin-top: .6rem; }

.main-area { flex: 1 1 auto; min-width: 0; display: flex; flex-direction: column; }

.js-filter-row th { padding: .35rem .5rem; background-color: var(--ui-card-bg); border-bottom: 1px solid var(--ui-border); }
.js-filter-row .form-control-sm { font-size: .8125rem; padding: .25rem .5rem; }
.js-filter-empty td { border-top: none; }

.chart-box { position: relative; height: 320px; width: 100%; }
.chart-box-sm { height: 220px; }
.chart-box-xs { height: 160px; }
@media (max-width: 575.98px) {
  .chart-box { height: 260px; }
  .chart-box-sm { height: 200px; }
  .chart-box-xs { height: 150px; }
}

.topbar-mobile {
  display: none;
  align-items: center;
  gap: .75rem;
  padding: .75rem 1rem;
  background: var(--ui-sidebar-bg);
  color: #fff;
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.topbar-mobile .btn { color: #fff; border-color: rgba(255,255,255,.25); }

.main-content { flex: 1 1 auto; padding: 1.75rem 2rem 3rem; }

@media (max-width: 991.98px) {
  .topbar-mobile { display: flex; }
  .main-content { padding: 1.25rem 1rem 2.5rem; }
}

/* --------------------------------------------------------------------
   Karty, tabulky, formuláře — tenké ohraničení, jemné zaoblení
   -------------------------------------------------------------------- */
.card {
  border: 1px solid var(--ui-border);
  border-radius: var(--ui-radius);
  box-shadow: none;
}
.card-header {
  background-color: var(--ui-card-bg);
  border-bottom: 1px solid var(--ui-border);
  font-weight: 600;
  font-size: .9375rem;
  padding: .85rem 1.1rem;
  color: var(--ui-text);
}
.card-body { padding: 1.1rem; }

.table { color: var(--ui-text); font-size: .8125rem; }
.table thead th {
  white-space: nowrap;
  text-transform: uppercase;
  font-size: .6875rem;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--ui-text-muted);
  border-bottom: 1px solid var(--ui-border);
  background-color: transparent !important;
  padding: .55rem .65rem;
}
.table td { padding: .55rem .65rem; border-color: var(--ui-border); vertical-align: middle; }
.table-hover tbody tr:hover { background-color: var(--ui-blue-light); }
.table-light { background-color: #fafbfc !important; }
tr[data-href] { cursor: pointer; }
li[data-href] { cursor: pointer; }
li[data-href]:hover { background-color: var(--ui-blue-light); }

/* Sjednocená velikost písma ve všech tabulkách na přehledu (dashboardu) */
.dashboard-table { font-size: .8125rem; }
.dashboard-table th, .dashboard-table td { padding: .5rem .65rem; }

.form-control, .form-select {
  border: 1px solid var(--ui-border-strong);
  border-radius: var(--ui-radius-sm);
  font-size: .875rem;
  padding: .5rem .75rem;
}
.form-control:focus, .form-select:focus {
  border-color: var(--ui-blue);
  box-shadow: 0 0 0 3px var(--ui-blue-light);
}
.form-label { font-weight: 600; font-size: .8125rem; color: var(--ui-text); margin-bottom: .3rem; }

/* --------------------------------------------------------------------
   Tlačítka
   -------------------------------------------------------------------- */
.btn {
  border-radius: var(--ui-radius-sm);
  font-size: .8125rem;
  font-weight: 600;
  padding: .5rem 1rem;
}
.btn-sm { padding: .3rem .65rem; font-size: .75rem; }

.btn-primary {
  background-color: var(--ui-blue);
  border-color: var(--ui-blue);
}
.btn-primary:hover, .btn-primary:focus {
  background-color: var(--ui-blue-hover);
  border-color: var(--ui-blue-hover);
}
.btn-outline-secondary { color: var(--ui-text); border-color: var(--ui-border-strong); }
.btn-outline-secondary:hover { background-color: var(--ui-gray-bg); color: var(--ui-text); border-color: var(--ui-border-strong); }
.btn-outline-danger { color: var(--ui-red); border-color: var(--ui-red); }
.btn-outline-danger:hover { background-color: var(--ui-red); border-color: var(--ui-red); }
.btn-danger { background-color: var(--ui-red); border-color: var(--ui-red); }
.btn-outline-light { color: #fff; border-color: rgba(255,255,255,.35); }

/* --------------------------------------------------------------------
   Odznaky (badges) — tónované, ne plná syté barvy
   -------------------------------------------------------------------- */
.badge {
  border-radius: var(--ui-radius-pill);
  font-weight: 600;
  font-size: .6875rem;
  padding: .32rem .6rem;
  letter-spacing: .01em;
}
.badge.bg-success { background-color: var(--ui-green-bg) !important; color: var(--ui-green) !important; }
.badge.bg-danger { background-color: var(--ui-red-bg) !important; color: var(--ui-red) !important; }
.badge.bg-warning { background-color: var(--ui-amber-bg) !important; color: var(--ui-amber) !important; }
.badge.bg-info { background-color: var(--ui-blue-light) !important; color: var(--ui-blue) !important; }
.badge.bg-secondary { background-color: var(--ui-gray-bg) !important; color: var(--ui-gray-text) !important; }

/* --------------------------------------------------------------------
   Záložky (nav-tabs) — plochý podtrhový styl
   -------------------------------------------------------------------- */
.nav-tabs { border-bottom: 1px solid var(--ui-border); gap: .25rem; }
.nav-tabs .nav-link {
  border: none;
  border-bottom: 2px solid transparent;
  border-radius: 0;
  color: var(--ui-text-muted);
  font-weight: 600;
  font-size: .8125rem;
  padding: .6rem .25rem;
  margin-right: 1.1rem;
}
.nav-tabs .nav-link:hover { border-color: transparent; color: var(--ui-text); }
.nav-tabs .nav-link.active {
  background: transparent;
  color: var(--ui-blue);
  border-bottom-color: var(--ui-blue);
}

/* --------------------------------------------------------------------
   Drobnosti
   -------------------------------------------------------------------- */
.badge-status { font-size: .85em; }
.kpi-value { font-size: 1.85rem; font-weight: 700; color: var(--ui-text); }
.text-overdue { color: var(--ui-red); font-weight: 600; }
.notes-box { white-space: pre-wrap; }
.list-group-item { border-color: var(--ui-border); }

.alert { border-radius: var(--ui-radius-sm); border: 1px solid transparent; font-size: .875rem; }