:root {
    --color-bg: #ffffff;
    --color-surface: #ffffff;
    --color-surface-muted: #f8fafc;
    --color-surface-alt: #f1f5f9;
    --color-text: #2d3748;
    --color-heading: #1a202c;
    --color-muted: #64748b;
    --color-border: #e2e8f0;
    --color-border-strong: #cbd5e0;
    --color-accent: #1a73e8;
    --color-accent-hover: #1558b0;
    --color-nav-bg: rgba(255, 255, 255, 0.8);
    --color-badge-bg: #475569;
    --color-icon: #475569;
    --color-btn-primary-text: #ffffff;
    --color-shadow: rgba(60, 64, 67, 0.12);
    --color-input-bg: #ffffff;
    --color-input-border: #cfd8dc;
    --color-input-focus: #1a73e8;
    --color-table-header: #f1f5f9;
    --color-table-row: #ffffff;
    --color-table-row-alt: #f8fafc;
    --color-link: #1a73e8;
    --color-link-hover: #1558b0;
    --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Arial, sans-serif;
    --docs-border-radius: 8px;
    /* KPI Platform cascade levels (badges, tree stripes) */
    --level-theme-fg: #6d28d9;
    --level-theme-bg: #f3e8ff;
    --level-strategic-fg: #a16207;
    --level-strategic-bg: #fef3c7;
    --level-tactical-fg: #1d4ed8;
    --level-tactical-bg: #dbeafe;
    --level-operational-fg: #15803d;
    --level-operational-bg: #dcfce7;
    /* KPI Platform goal colours (goals matrix) */
    --goal-1: #b45309;
    --goal-2: #2563eb;
    --goal-3: #db2777;
    --goal-4: #059669;
    --goal-5: #7c3aed;
    --goal-6: #ea580c;
}

[data-theme="dark"] {
    --color-bg: #0f172a;
    --color-surface: #111827;
    --color-surface-muted: #111827;
    --color-surface-alt: #1f2937;
    --color-text: #e2e8f0;
    --color-heading: #f8fafc;
    --color-muted: #94a3b8;
    --color-border: #2b3646;
    --color-border-strong: #3b4a5c;
    --color-accent: #8ab4f8;
    --color-accent-hover: #a5c8ff;
    --color-nav-bg: rgba(15, 23, 42, 0.8);
    --color-badge-bg: #334155;
    --color-icon: #94a3b8;
    --color-btn-primary-text: #0b1020;
    --color-shadow: rgba(0, 0, 0, 0.45);
    --color-input-bg: #151f30;
    --color-input-border: #3b4a5c;
    --color-input-focus: #8ab4f8;
    --color-table-header: #1b2635;
    --color-table-row: #141c29;
    --color-table-row-alt: #182233;
    --color-link: #8ab4f8;
    --color-link-hover: #a5c8ff;
    --level-theme-fg: #c084fc;
    --level-theme-bg: rgba(192, 132, 252, 0.14);
    --level-strategic-fg: #e8b84b;
    --level-strategic-bg: rgba(232, 184, 75, 0.14);
    --level-tactical-fg: #60a5fa;
    --level-tactical-bg: rgba(96, 165, 250, 0.14);
    --level-operational-fg: #4ade80;
    --level-operational-bg: rgba(74, 222, 128, 0.14);
    --goal-1: #e8b84b;
    --goal-2: #60a5fa;
    --goal-3: #f472b6;
    --goal-4: #34d399;
    --goal-5: #a78bfa;
    --goal-6: #fb923c;
}

body {
    background: var(--color-bg);
    color: var(--color-text);
    font-family: var(--font-sans);
    letter-spacing: 0.1px;
}

h1, h2, h3, h4, h5, h6 {
    color: var(--color-heading);
    font-weight: 600;
    letter-spacing: -0.02em;
}

p, span, small, li, td, th, label, input, select, textarea {
    color: inherit;
}

.lead {
    color: var(--color-muted);
}

.text-primary {
    color: var(--color-accent) !important;
}

.text-muted {
    color: var(--color-muted) !important;
}

/* Help text under form fields (Bootstrap's own colour is unreadable in dark mode). */
.form-text {
    color: var(--color-muted);
}

.text-light,
[data-theme="dark"] .text-dark {
    color: var(--color-text) !important;
}

a {
    color: var(--color-link);
}

a:hover,
a:focus {
    color: var(--color-link-hover);
}

.navbar {
    backdrop-filter: blur(20px);
    background: var(--color-nav-bg) !important;
    border-color: var(--color-border) !important;
}

.navbar-brand {
    color: var(--color-heading) !important;
    font-weight: 600;
}

.nav-link {
    color: var(--color-muted) !important;
}

.nav-link:hover,
.nav-link:focus,
[data-theme="dark"] .navbar-brand,
[data-theme="dark"] .nav-link {
    color: var(--color-text) !important;
}

.bg-white,
.card,
.card-header,
.card-body,
.card-footer,
.modal-content,
.dropdown-menu,
.list-group-item,
.accordion-item,
.accordion-button,
.accordion-body {
    background-color: var(--color-surface) !important;
    color: var(--color-text) !important;
    border-color: var(--color-border) !important;
}

.bg-white {
    border-radius: var(--docs-border-radius);
    box-shadow: 0 1px 2px var(--color-shadow);
}

.bg-light {
    background-color: var(--color-surface-alt) !important;
}

.border,
.border-0,
.border-bottom {
    border-color: var(--color-border) !important;
}

.btn {
    font-weight: 500;
    letter-spacing: 0.1px;
}

.btn-primary,
.btn-dark {
    background: var(--color-accent);
    border-color: var(--color-accent);
    color: var(--color-btn-primary-text);
    transition: all 0.2s ease;
}

.btn-primary:hover,
.btn-primary:focus,
.btn-dark:hover,
.btn-dark:focus {
    background: var(--color-accent-hover);
    border-color: var(--color-accent-hover);
    color: var(--color-btn-primary-text);
    box-shadow: 0 4px 12px var(--color-shadow);
    transform: translateY(-1px);
}

.btn-outline-primary {
    color: var(--color-accent);
    border-color: var(--color-accent);
}

.btn-outline-primary:hover,
.btn-outline-primary:focus {
    background: var(--color-accent);
    border-color: var(--color-accent);
    color: var(--color-btn-primary-text);
}

.btn-outline-secondary {
    border-color: var(--color-border);
    color: var(--color-heading);
}

.btn-outline-secondary:hover,
.btn-outline-secondary:focus {
    background: var(--color-surface-alt);
    border-color: var(--color-border-strong);
    color: var(--color-text);
}

.form-control,
.form-select,
.form-check-input,
textarea,
.input-group-text {
    background-color: var(--color-input-bg) !important;
    border-color: var(--color-input-border) !important;
    color: var(--color-text) !important;
}

.form-control::placeholder,
.form-select::placeholder,
textarea::placeholder {
    color: var(--color-muted);
}

.form-control:focus,
.form-select:focus,
textarea:focus {
    background-color: var(--color-input-bg) !important;
    border-color: var(--color-input-focus) !important;
    color: var(--color-text) !important;
    box-shadow: 0 0 0 0.2rem rgba(26, 115, 232, 0.2);
}

[data-theme="dark"] .form-control:focus,
[data-theme="dark"] .form-select:focus,
[data-theme="dark"] textarea:focus {
    box-shadow: 0 0 0 0.2rem rgba(138, 180, 248, 0.2);
}

.form-check-input:checked {
    background-color: var(--color-accent);
    border-color: var(--color-accent);
}

.table {
    --bs-table-color: var(--color-text);
    --bs-table-bg: var(--color-surface);
    --bs-table-border-color: var(--color-border);
    --bs-table-striped-bg: var(--color-table-row-alt);
    --bs-table-striped-color: var(--color-text);
    --bs-table-hover-bg: var(--color-surface-alt);
    --bs-table-hover-color: var(--color-text);
    color: var(--color-text);
}

.table-light {
    --bs-table-bg: var(--color-table-header);
    --bs-table-color: var(--color-text);
}

.table > :not(caption) > * > * {
    background-color: var(--color-table-row);
    border-color: var(--color-border);
}

.table td,
.table th,
.table a,
.table span,
.table small,
.table strong,
.table .text-muted,
.table .text-light {
    color: var(--color-text) !important;
}

.alert {
    border-radius: 0.5rem;
}

.alert-danger {
    background-color: rgba(220, 53, 69, 0.12);
    border-color: rgba(220, 53, 69, 0.24);
    color: #b42318;
}

[role="button"] {
    cursor: pointer;
    transition: background-color 0.15s ease-in-out;
}

[role="button"]:hover {
    background-color: var(--color-surface-muted) !important;
}
/* Status colours share the theme palette instead of raw Bootstrap colours,
   so badges match the accent/button colours in both light and dark mode. */
:root {
    --color-success: #1e8e3e;
    --color-success-contrast: #ffffff;
    --color-warning: #f9ab00;
    --color-warning-contrast: #1a202c;
    --color-danger: #d93025;
    --color-danger-contrast: #ffffff;
}

[data-theme="dark"] {
    --color-success: #81c995;
    --color-success-contrast: #0b1020;
    --color-warning: #fdd663;
    --color-warning-contrast: #0b1020;
    --color-danger: #f28b82;
    --color-danger-contrast: #0b1020;
}

.badge.bg-primary {
    background-color: var(--color-accent) !important;
    color: var(--color-btn-primary-text) !important;
}

.badge.bg-success {
    background-color: var(--color-success) !important;
    color: var(--color-success-contrast) !important;
}

.badge.bg-warning {
    background-color: var(--color-warning) !important;
    color: var(--color-warning-contrast) !important;
}

.badge.bg-danger {
    background-color: var(--color-danger) !important;
    color: var(--color-danger-contrast) !important;
}

.badge.bg-secondary {
    background-color: var(--color-badge-bg) !important;
    color: #ffffff !important;
}

/* Label for the non-production stacks (test.matso.nl, acceptance.matso.nl) */
.env-badge {
    display: inline-block;
    margin-left: 0.25rem;
    padding: 0.15rem 0.5rem;
    border-radius: 4px;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    color: #fff;
    background: #64748b;
    vertical-align: middle;
}
.env-strip {
    text-align: center;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    color: #fff;
    background: #64748b;
    padding: 0.15rem 0;
}
.env-test { background: #c2410c; }
.env-acceptance { background: #7c3aed; }