:root {
    --color-bg: #f4f5f7;
    --color-surface: #ffffff;
    --color-border: #e0e2e7;
    --color-text: #1f2430;
    --color-text-muted: #6b7280;
    --color-primary: #2563eb;
    --color-primary-hover: #1d4ed8;
    --color-danger: #dc2626;
    --color-danger-bg: #fef2f2;
    --color-success: #16a34a;
    --color-success-bg: #f0fdf4;
    --color-warning-bg: #fffbeb;
    --radius: 8px;
    --shadow: 0 1px 2px rgba(16, 24, 40, 0.06), 0 1px 3px rgba(16, 24, 40, 0.08);
}

* { box-sizing: border-box; }

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

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

h1, h2, h3 { font-weight: 600; line-height: 1.3; }
h1 { font-size: 1.5rem; margin: 0 0 1rem; }
h2 { font-size: 1.15rem; margin: 2rem 0 0.75rem; }
h3 { font-size: 1rem; margin: 1.5rem 0 0.5rem; color: var(--color-text-muted); }

/* ---- Topbar (admin + klant) ---- */
.topbar {
    background: #111827;
    color: #f9fafb;
    padding: 0.85rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 0.5rem;
}
.topbar .brand { font-weight: 600; color: #fff; }
.topbar .brand .tag {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    background: var(--color-primary);
    padding: 0.15rem 0.5rem;
    border-radius: 999px;
    margin-left: 0.5rem;
}
.topbar nav { display: flex; gap: 1.25rem; align-items: center; }
.topbar nav a { color: #d1d5db; }
.topbar nav a.active { color: #fff; font-weight: 600; }
.topbar nav a:hover { color: #fff; text-decoration: none; }
.topbar .spacer { flex: 1; }
.topbar .user { color: #9ca3af; font-size: 0.9rem; }

/* ---- Layout ---- */
.page {
    max-width: 960px;
    margin: 0 auto;
    padding: 2rem 1.5rem 4rem;
}
.page.narrow { max-width: 420px; padding-top: 4rem; }

.button-row { display: flex; flex-wrap: wrap; gap: 0.5rem; align-items: center; }

.card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

/* ---- Alerts ---- */
.alert {
    padding: 0.75rem 1rem;
    border-radius: var(--radius);
    margin: 0 0 1.25rem;
    border: 1px solid transparent;
}
.alert-success { background: var(--color-success-bg); color: #166534; border-color: #bbf7d0; }
.alert-error { background: var(--color-danger-bg); color: #991b1b; border-color: #fecaca; }
.alert-info { background: var(--color-warning-bg); color: #92400e; border-color: #fde68a; }

/* ---- Forms ---- */
label { display: block; font-size: 0.9rem; font-weight: 500; margin-bottom: 0.3rem; }
input[type=text], input[type=email], input[type=password], input[type=number] {
    width: 100%;
    padding: 0.5rem 0.65rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    font-size: 0.95rem;
    background: #fff;
    color: var(--color-text);
}
input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}
.field { margin-bottom: 1rem; }
.form-row { display: flex; gap: 0.75rem; align-items: flex-end; flex-wrap: wrap; }
.form-row .field { flex: 1; min-width: 160px; margin-bottom: 0; }

/* ---- Buttons ---- */
button, .btn {
    display: inline-block;
    font-size: 0.9rem;
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: var(--radius);
    border: 1px solid var(--color-border);
    background: #fff;
    color: var(--color-text);
    cursor: pointer;
}
button:hover, .btn:hover { background: #f3f4f6; text-decoration: none; }
button.primary, .btn.primary {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: #fff;
}
button.primary:hover, .btn.primary:hover { background: var(--color-primary-hover); }
button.danger, .btn.danger { color: var(--color-danger); border-color: #fecaca; }
button.danger:hover { background: var(--color-danger-bg); }
form.inline { display: inline; }

/* ---- Tables ----
   .table-wrap scrolls horizontally instead of squeezing columns unreadably
   small or breaking the page layout on narrow screens. */
table { width: 100%; border-collapse: collapse; }
.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
.card .table-wrap { margin: -0.25rem -0.25rem 0; width: calc(100% + 0.5rem); padding: 0 0.25rem; }
.card .table-wrap table { width: calc(100% - 0.5rem); min-width: 100%; }
th, td { text-align: left; padding: 0.6rem 0.75rem; border-bottom: 1px solid var(--color-border); font-size: 0.9rem; }
th { color: var(--color-text-muted); font-weight: 600; font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.02em; white-space: nowrap; }
tr:last-child td { border-bottom: none; }
td input[type=text], td input[type=number] { font-size: 0.88rem; padding: 0.35rem 0.5rem; min-width: 90px; }

/* ---- Badges ---- */
.badge {
    display: inline-block;
    padding: 0.15rem 0.55rem;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 600;
}
.badge-yes { background: var(--color-success-bg); color: #166534; }
.badge-no { background: #f3f4f6; color: var(--color-text-muted); }
.badge-admin { background: #eef2ff; color: #4338ca; }

.muted { color: var(--color-text-muted); }
.actions-cell { white-space: nowrap; }

/* ---- Mobiel ---- */
@media (max-width: 600px) {
    .page { padding: 1.25rem 1rem 3rem; }
    .page.narrow { padding-top: 2.5rem; }
    .topbar { padding: 0.7rem 1rem; }
    .card { padding: 1.1rem 1rem; }
    h1 { font-size: 1.3rem; }
}