:root {
  --berk-blue: #2e3192;
  --berk-blue-dark: #23266f;
  --berk-blue-light: #4a4db5;
  --berk-bg: #f4f5fb;
  --berk-border: #d9dbe9;
  --berk-text: #1f2233;
  --berk-muted: #6b6f87;
  --berk-danger: #c0392b;
  --berk-success: #2e8b57;
  --berk-warning: #d98c00;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--berk-bg);
  color: var(--berk-text);
  font-size: 15px;
  line-height: 1.5;
}

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

/* ===== Topbar met logo linksboven ===== */
.topbar {
  display: flex;
  align-items: center;
  gap: 24px;
  background: #fff;
  border-bottom: 3px solid var(--berk-blue);
  padding: 10px 24px;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.06);
  position: sticky;
  top: 0;
  z-index: 10;
}
.topbar .brand { display: flex; align-items: center; gap: 10px; }
.topbar .brand img { height: 44px; width: auto; display: block; }
.topbar nav { display: flex; gap: 18px; flex: 1; }
.topbar nav a { color: var(--berk-text); font-weight: 500; padding: 6px 4px; }
.topbar nav a:hover { color: var(--berk-blue); text-decoration: none; }
.topbar .user-menu { display: flex; align-items: center; gap: 14px; color: var(--berk-muted); font-size: 14px; }
.topbar .user-menu .linkbtn {
  background: none; border: 0; color: var(--berk-blue); font: inherit; font-weight: 600; cursor: pointer; padding: 0;
}
.topbar .user-menu .linkbtn:hover { text-decoration: underline; }
.topbar form { display: inline; margin: 0; }

/* ===== Layout ===== */
.container { max-width: 820px; margin: 28px auto; padding: 0 24px 48px; }
.container.wide { max-width: 1000px; }
.page-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 18px; gap: 12px; }
.page-header h1 { font-size: 22px; margin: 0; color: var(--berk-blue-dark); }
.lead { color: var(--berk-muted); margin: 0 0 22px; }

/* ===== Cards ===== */
.card {
  background: #fff;
  border: 1px solid var(--berk-border);
  border-radius: 8px;
  padding: 24px;
  margin-bottom: 18px;
}
.card h2 { font-size: 17px; margin-top: 0; color: var(--berk-blue-dark); }

/* ===== Tabellen ===== */
table { width: 100%; border-collapse: collapse; background: #fff; }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--berk-border); vertical-align: top; }
th { background: var(--berk-blue); color: #fff; font-weight: 600; font-size: 13px; text-transform: uppercase; letter-spacing: 0.3px; }
td.num, th.num { text-align: right; white-space: nowrap; }
tr:hover td { background: #fafbff; }

/* ===== Formulieren ===== */
label { display: block; font-weight: 600; margin-bottom: 4px; font-size: 14px; }
input[type="text"], input[type="email"], input[type="password"] {
  width: 100%; padding: 9px 10px; border: 1px solid var(--berk-border); border-radius: 6px;
  font-size: 14px; font-family: inherit; background: #fff;
}
input:focus { outline: none; border-color: var(--berk-blue); box-shadow: 0 0 0 2px rgba(46, 49, 146, 0.15); }
.form-row { margin-bottom: 14px; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.form-grid .full { grid-column: 1 / -1; }
.checkbox-row { display: flex; align-items: center; gap: 8px; }
.checkbox-row input { width: auto; }
.checkbox-row label { margin: 0; font-weight: 400; }

/* ===== Knoppen ===== */
.btn {
  display: inline-block; background: var(--berk-blue); color: #fff; border: none;
  padding: 10px 18px; border-radius: 6px; font-size: 14px; font-weight: 600; cursor: pointer; text-decoration: none;
}
.btn:hover { background: var(--berk-blue-dark); text-decoration: none; }
.btn-block { width: 100%; text-align: center; }
.btn-secondary { background: #fff; color: var(--berk-blue); border: 1px solid var(--berk-blue); }
.btn-secondary:hover { background: #eef0fb; }
.btn-danger { background: var(--berk-danger); }
.btn-danger:hover { background: #97291c; }
.btn-sm { padding: 5px 10px; font-size: 13px; }

/* ===== Badges / pills ===== */
.badge { display: inline-block; padding: 3px 9px; border-radius: 12px; font-size: 12px; font-weight: 700; }
.badge.admin { background: #fdecea; color: var(--berk-danger); }
.badge.uit { background: #eef0fb; color: var(--berk-muted); }
.badge.zeker { background: #fdecea; color: var(--berk-danger); }
.badge.mogelijk { background: #fef6e7; color: var(--berk-warning); }

/* ===== Meldingen / banners ===== */
.alert { padding: 12px 16px; border-radius: 6px; margin-bottom: 16px; font-size: 14px; }
.alert-error { background: #fdecea; color: var(--berk-danger); border: 1px solid #f5c6c0; }
.alert-success { background: #e6f4ec; color: var(--berk-success); border: 1px solid #bfe3cd; }
.banner { border-radius: 8px; padding: 14px 18px; font-weight: 600; margin-bottom: 18px; }
.banner.ok { background: #e6f4ec; color: var(--berk-success); border: 1px solid #bfe3cd; }
.banner.hit { background: #fdecea; color: var(--berk-danger); border: 1px solid #f5c6c0; }

/* ===== Uploadveld (sleepzone) ===== */
.drop {
  display: block; border: 2px dashed #c3ccd4; border-radius: 8px; padding: 2rem 1rem;
  text-align: center; transition: .15s; cursor: pointer; background: #fafbff;
}
.drop:hover, .drop.hover { border-color: var(--berk-blue); background: #eef0fb; }
.drop input { display: none; }
.drop .big { font-size: 1.05rem; font-weight: 600; }
.drop .sub { color: var(--berk-muted); font-size: .9rem; margin-top: .35rem; }
.fname { margin-top: 1rem; font-weight: 600; color: var(--berk-blue); min-height: 1.2em; }

/* ===== "Wat doet de tool" ===== */
.how { margin-top: 1.5rem; font-size: .92rem; color: var(--berk-muted); }
.how h3 { font-size: .95rem; color: var(--berk-text); margin-bottom: .4rem; }
.how ul { margin: .2rem 0 0; padding-left: 1.2rem; }

/* ===== Login ===== */
.login-wrap { max-width: 420px; margin: 8vh auto; padding: 0 20px; }
.login-card {
  background: #fff; border: 1px solid var(--berk-border); border-top: 4px solid var(--berk-blue);
  border-radius: 10px; padding: 34px 30px; box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}
.login-card .logo { text-align: center; margin-bottom: 8px; }
.login-card .logo img { width: 70%; height: auto; display: inline-block; }
.login-card h2 { text-align: center; margin: 0 0 20px; color: var(--berk-blue-dark); font-size: 18px; font-weight: 600; }
.login-card p { color: var(--berk-muted); font-size: 14px; margin: 0 0 16px; }
.login-links { text-align: center; margin: 16px 0 0; font-size: 14px; }
.login-links a { color: var(--berk-blue); text-decoration: none; }
.login-links a:hover { text-decoration: underline; }

/* ===== Diversen ===== */
.muted { color: var(--berk-muted); font-size: 13px; }
.acties { display: flex; flex-wrap: wrap; gap: .4rem; }
.acties form { display: inline; margin: 0; }
.actions { margin-top: 1.5rem; display: flex; flex-wrap: wrap; gap: .6rem; }
.legend { font-size: .82rem; color: var(--berk-muted); margin: .75rem 0 0; }
footer { margin-top: 2.5rem; text-align: center; color: #9aa7b1; font-size: .8rem; }

@media (max-width: 720px) {
  .form-grid { grid-template-columns: 1fr; }
  .topbar { gap: 14px; padding: 10px 14px; }
  .topbar .brand img { height: 36px; }
}