:root {
  --blauw: #2596d1;
  --blauw-donker: #1d6f9e;
  --blauw-licht: #e8f4fb;
  --blauw-rand: #bfe0f2;
  --geel: #f2c94c;
  --rood: #e05c5c;
  --groen: #4caf7d;
  --tekst: #1f2933;
  --tekst-zacht: #52606d;
  --achtergrond: #f7fbfd;
  --wit: #ffffff;
  --rand: #dbe7ee;
  --radius: 12px;
  --schaduw: 0 2px 8px rgba(29, 111, 158, 0.08);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--achtergrond);
  color: var(--tekst);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.45;
}

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

.app {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Topbar */
.topbar {
  background: var(--blauw);
  color: white;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 16px;
  box-shadow: var(--schaduw);
  position: sticky;
  top: 0;
  z-index: 20;
}

.topbar .logo-img {
  height: 40px;
  width: auto;
  display: block;
}

.topbar .titel {
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: 0.2px;
}

.topbar .spacer { flex: 1; }

.topbar .menu-toggle {
  display: none;
  background: none;
  border: none;
  color: white;
  font-size: 1.5rem;
  cursor: pointer;
  padding: 4px 8px;
}

.topbar a.uitloggen {
  color: white;
  opacity: 0.9;
  font-size: 0.9rem;
  border: 1px solid rgba(255,255,255,0.5);
  padding: 6px 12px;
  border-radius: 20px;
}
.topbar a.uitloggen:hover { background: rgba(255,255,255,0.15); text-decoration: none; }

.layout {
  flex: 1;
  display: flex;
  min-height: 0;
}

nav.sidebar {
  width: 210px;
  flex-shrink: 0;
  background: var(--wit);
  border-right: 1px solid var(--rand);
  padding: 16px 0;
}

nav.sidebar a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 11px 20px;
  color: var(--tekst-zacht);
  font-weight: 500;
  border-left: 3px solid transparent;
}

nav.sidebar a:hover {
  background: var(--blauw-licht);
  text-decoration: none;
  color: var(--blauw-donker);
}

nav.sidebar a.actief {
  background: var(--blauw-licht);
  color: var(--blauw-donker);
  border-left-color: var(--blauw);
  font-weight: 700;
}

main.inhoud {
  flex: 1;
  padding: 22px 26px 60px;
  max-width: 1100px;
  width: 100%;
  margin: 0 auto;
}

h1 { font-size: 1.6rem; margin: 0 0 18px; color: var(--blauw-donker); }
h2 { font-size: 1.25rem; margin: 24px 0 12px; color: var(--blauw-donker); }
h3 { font-size: 1.05rem; margin: 18px 0 8px; }

.pagina-kop {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 18px;
}
.pagina-kop h1 { margin: 0; }

.card {
  background: var(--wit);
  border: 1px solid var(--rand);
  border-radius: var(--radius);
  padding: 18px 20px;
  margin-bottom: 18px;
  box-shadow: var(--schaduw);
}

.card-titel {
  font-weight: 700;
  color: var(--blauw-donker);
  margin-bottom: 10px;
  font-size: 1.05rem;
}

.grid {
  display: grid;
  gap: 16px;
}
.grid.cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid.cols-4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 800px) {
  .grid.cols-2, .grid.cols-3, .grid.cols-4 { grid-template-columns: 1fr; }
}

.stat {
  background: var(--wit);
  border: 1px solid var(--rand);
  border-radius: var(--radius);
  padding: 16px 18px;
  box-shadow: var(--schaduw);
}
.stat .label { color: var(--tekst-zacht); font-size: 0.85rem; margin-bottom: 6px; }
.stat .waarde { font-size: 1.6rem; font-weight: 700; color: var(--blauw-donker); }
.stat .sub { font-size: 0.8rem; color: var(--tekst-zacht); margin-top: 4px; }

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}
th, td {
  text-align: left;
  padding: 10px 12px;
  border-bottom: 1px solid var(--rand);
  vertical-align: middle;
}
th { color: var(--tekst-zacht); font-weight: 600; font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.3px; }
tr:last-child td { border-bottom: none; }
.tabel-wrap { overflow-x: auto; }
td.num, th.num { text-align: right; }

.badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 0.78rem;
  font-weight: 700;
  white-space: nowrap;
}
.badge.concept { background: #eee; color: #666; }
.badge.verzonden { background: #fff3d6; color: #8a6100; }
.badge.betaald { background: #e1f5ea; color: #1e7a4c; }
.badge.actief { background: #e1f5ea; color: #1e7a4c; }
.badge.inactief { background: #f2f2f2; color: #888; }
.badge.afgesloten { background: #ffe6e6; color: #b03030; }
.badge.open { background: #e1f5ea; color: #1e7a4c; }

form label {
  display: block;
  font-weight: 600;
  font-size: 0.88rem;
  margin: 12px 0 5px;
  color: var(--tekst-zacht);
}
form label:first-child { margin-top: 0; }

input, select, textarea {
  width: 100%;
  padding: 9px 11px;
  border: 1px solid var(--rand);
  border-radius: 8px;
  font-size: 0.95rem;
  font-family: inherit;
  background: var(--wit);
  color: var(--tekst);
}
input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--blauw);
  box-shadow: 0 0 0 3px rgba(37, 150, 209, 0.15);
}
textarea { resize: vertical; min-height: 70px; }

.veld-rij { display: flex; gap: 14px; flex-wrap: wrap; }
.veld-rij > * { flex: 1; min-width: 140px; }

.hulp-tekst { font-size: 0.8rem; color: var(--tekst-zacht); margin-top: 4px; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--blauw);
  color: white;
  border: none;
  padding: 10px 18px;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
}
.btn:hover { background: var(--blauw-donker); text-decoration: none; }
.btn.secundair { background: var(--wit); color: var(--blauw-donker); border: 1px solid var(--blauw-rand); }
.btn.secundair:hover { background: var(--blauw-licht); }
.btn.gevaar { background: var(--wit); color: var(--rood); border: 1px solid #f0c8c8; }
.btn.gevaar:hover { background: #fff0f0; }
.btn.klein { padding: 5px 12px; font-size: 0.83rem; }
.btn[disabled] { opacity: 0.5; cursor: not-allowed; }

.knoppen-rij { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 16px; }

.melding {
  padding: 12px 16px;
  border-radius: 8px;
  margin-bottom: 16px;
  font-size: 0.92rem;
}
.melding.succes { background: #e1f5ea; color: #1e7a4c; border: 1px solid #b8e6cb; }
.melding.fout { background: #fdeaea; color: #a33; border: 1px solid #f3c6c6; }

.login-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(160deg, var(--blauw) 0%, var(--blauw-donker) 100%);
  padding: 20px;
}
.login-card {
  background: white;
  border-radius: 16px;
  padding: 36px 32px;
  width: 100%;
  max-width: 380px;
  box-shadow: 0 10px 40px rgba(0,0,0,0.2);
  text-align: center;
}
.login-card img { height: 90px; margin-bottom: 6px; }
.login-card h1 { font-size: 1.3rem; }

.leeg-staat {
  text-align: center;
  padding: 40px 20px;
  color: var(--tekst-zacht);
}

.subnav {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 18px;
}
.subnav a, .subnav span {
  padding: 7px 14px;
  border-radius: 20px;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--tekst-zacht);
  background: var(--wit);
  border: 1px solid var(--rand);
}
.subnav a.actief { background: var(--blauw); color: white; border-color: var(--blauw); }
.subnav a:hover { text-decoration: none; background: var(--blauw-licht); }

.terug-link { display: inline-block; margin-bottom: 14px; font-size: 0.9rem; }

.dag-blok {
  border: 1px solid var(--rand);
  border-radius: 10px;
  padding: 12px 14px;
  margin-bottom: 10px;
  background: var(--wit);
}
.dag-blok .rij { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.dag-blok input[type=time] { width: 110px; }
.dag-blok .duur { color: var(--tekst-zacht); font-size: 0.85rem; min-width: 70px; }

.kalender {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 4px;
}
.kalender .dagnaam {
  text-align: center;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--tekst-zacht);
  padding: 4px 0;
}
.kalender .dagcel {
  min-height: 64px;
  border: 1px solid var(--rand);
  border-radius: 8px;
  padding: 5px 6px;
  font-size: 0.78rem;
  background: var(--wit);
}
.kalender .dagcel.leeg { background: transparent; border-color: transparent; }
.kalender .dagcel .nr { font-weight: 700; color: var(--tekst-zacht); }
.kalender .dagcel.heeft-opvang { background: var(--blauw-licht); border-color: var(--blauw-rand); }
.kalender .dagcel .kind-naam { display: block; color: var(--blauw-donker); font-weight: 600; margin-top: 2px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.kalender .dagcel.vandaag { border: 2px solid var(--blauw); }

.jaar-kop { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.jaar-kop .maand-naam { font-weight: 700; font-size: 1.1rem; min-width: 200px; text-align: center; }

@media (max-width: 900px) {
  main.inhoud { padding: 16px; }
  .grid.cols-3, .grid.cols-4 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 700px) {
  nav.sidebar {
    position: fixed;
    left: 0; top: 58px; bottom: 0;
    transform: translateX(-100%);
    transition: transform 0.2s ease;
    z-index: 30;
    box-shadow: 4px 0 12px rgba(0,0,0,0.1);
  }
  nav.sidebar.open { transform: translateX(0); }
  .topbar .menu-toggle { display: block; }
  .topbar .titel { font-size: 1rem; }
  main.inhoud { padding: 14px; }
  .grid.cols-2, .grid.cols-3, .grid.cols-4 { grid-template-columns: 1fr; }
  .veld-rij { flex-direction: column; }
  .veld-rij > * { min-width: 0; }
  table, thead, tbody, th, td, tr { display: block; }
  .tabel-wrap thead { display: none; }
  .tabel-wrap tr { border: 1px solid var(--rand); border-radius: 10px; margin-bottom: 10px; padding: 6px 0; background: white; }
  .tabel-wrap td { border: none; display: flex; justify-content: space-between; gap: 10px; padding: 6px 12px; }
  .tabel-wrap td::before { content: attr(data-label); font-weight: 600; color: var(--tekst-zacht); margin-right: 10px; }
  .tabel-wrap td.geen-label::before { content: none; }
  .kalender .dagcel .kind-naam { display: none; }
}