/* ==========================================================================
   DiDaH redesign — "digitisasi data historis" design system
   Site 4 of 8 · design seed 735697671 · class block prefix: dida-
   Self-hosted Bulma 1.0.2 base + this overrides layer. No build step:
   Bulma 1.x is CSS-custom-property driven, customised below via variables.
   ========================================================================== */

:root {
  /* ---- palette: inherited olive/green family, darkened for AA contrast ---- */
  --dida-ink:            #20261a;
  --dida-body:           #2b3122;
  --dida-muted:          #5d6848;
  --dida-olive:          #55661d;   /* footprint #6B8E23 family, darkened for text */
  --dida-olive-bright:   #6b8e23;   /* original heading hue — decorative only   */
  --dida-olive-deep:     #3d4c1b;
  --dida-olive-darker:   #2b3714;
  --dida-leaf:           #c9e18b;   /* original left-nav background             */
  --dida-leaf-soft:      #edf3da;
  --dida-leaf-band:      #e2ecc2;   /* softened #99FF00 table head, accessible  */
  --dida-paper:          #ffffff;
  --dida-paper-2:        #f7f9ef;
  --dida-paper-3:        #eff3e1;
  --dida-rule:           #d5dcc2;
  --dida-rule-strong:    #b7c398;
  --dida-link:           #2e6a1c;   /* accessible replacement for `green` #008000 */
  --dida-link-hover:     #b22222;   /* footprint current-path crimson            */
  --dida-accent:         #808000;   /* footprint olive accent                     */
  --dida-crimson:        #b22222;

  /* seed 735697671 % 6 = 3  ->  radius 6px (not the generic 16px) */
  --dida-radius:      6px;
  --dida-radius-sm:   4px;

  /* seed % 3 = 0 -> no drop shadows; separation via rules & paper tone */
  --dida-shadow:      none;

  --dida-font: "Arimo", Arial, "Helvetica Neue", Helvetica, sans-serif;
  --dida-mono: ui-monospace, "SFMono-Regular", "Cascadia Mono", Consolas, monospace;

  --dida-wrap:  1180px;
  --dida-side:  248px;

  --dida-space-1: 6px;
  --dida-space-2: 12px;
  --dida-space-3: 20px;
  --dida-space-4: 32px;
  --dida-space-5: 52px;

  --dida-ease: cubic-bezier(.22,.61,.36,1);
}

/* ---- Bulma variable overrides (framework fingerprint removal) ---- */
:root {
  --bulma-family-primary: "Arimo", Arial, "Helvetica Neue", Helvetica, sans-serif;
  --bulma-family-secondary: "Arimo", Arial, "Helvetica Neue", Helvetica, sans-serif;
  --bulma-link: hsl(104, 58%, 26%);
  --bulma-primary: hsl(76, 56%, 26%);
  --bulma-body-size: 1rem;
}

/* =========================================================== reset ====== */
*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--dida-font);
  font-size: 16px;
  line-height: 1.62;
  color: var(--dida-body);
  background-color: var(--dida-paper-2);
  background-image:
    linear-gradient(90deg, rgba(107,142,35,.05) 0, rgba(107,142,35,.05) 1px, transparent 1px),
    linear-gradient(rgba(107,142,35,.04) 0, rgba(107,142,35,.04) 1px, transparent 1px);
  background-size: 34px 34px, 34px 34px;
}

img { max-width: 100%; height: auto; display: block; }

a { color: var(--dida-link); text-decoration: underline; text-underline-offset: 2px; }
a:hover, a:focus { color: var(--dida-link-hover); }

h1, h2, h3, h4 {
  font-family: var(--dida-font);
  color: var(--dida-olive-darker);
  line-height: 1.2;
  margin: 0 0 var(--dida-space-2);
  font-weight: 700;
  letter-spacing: -0.01em;
}

h1 { font-size: clamp(1.5rem, 1rem + 2.4vw, 2.5rem); font-weight: 700; }
h2 { font-size: clamp(1.3rem, 1.05rem + 1.1vw, 1.75rem); }
h3 { font-size: 1.2rem; }
h4 { font-size: 1.02rem; }

p { margin: 0 0 var(--dida-space-3); }

ul, ol { margin: 0 0 var(--dida-space-3); padding-left: 1.3em; }
li { margin-bottom: 6px; }

strong { color: var(--dida-olive-darker); }

hr { border: 0; border-top: 1px solid var(--dida-rule); margin: var(--dida-space-4) 0; }

/* focus visibility everywhere */
a:focus-visible, button:focus-visible, [tabindex]:focus-visible,
input:focus-visible, select:focus-visible, textarea:focus-visible {
  outline: 3px solid var(--dida-olive-bright);
  outline-offset: 2px;
  border-radius: var(--dida-radius-sm);
}

/* ================================================== skip + masthead ===== */
.dida-skip {
  position: absolute; left: -999px; top: 0; z-index: 60;
  background: var(--dida-olive-darker); color: #fff; padding: 10px 16px;
  text-decoration: none; border-radius: 0 0 var(--dida-radius) 0;
}
.dida-skip:focus { left: 0; color: #fff; }

.dida-masthead {
  background: var(--dida-paper);
  border-bottom: 3px solid var(--dida-olive-deep);
  position: sticky; top: 0; z-index: 40;
}
.dida-masthead__in {
  max-width: var(--dida-wrap);
  margin: 0 auto;
  padding: var(--dida-space-2) var(--dida-space-3);
  display: flex; align-items: center; gap: var(--dida-space-3);
}
.dida-logos { display: flex; align-items: center; gap: 10px; flex: 0 0 auto; }
.dida-logos img { height: 46px; width: auto; }
.dida-logos img.dida-logos__knmi { height: 52px; }

.dida-wordmark {
  margin-left: auto;
  display: flex; align-items: center; gap: 12px;
  text-align: right;
}
.dida-wordmark__img { height: 52px; width: auto; }
.dida-wordmark__text { line-height: 1.15; }
.dida-wordmark__title {
  display: block; font-weight: 700; font-size: 1.15rem; color: var(--dida-olive-darker);
  letter-spacing: .01em;
}
.dida-wordmark__sub {
  display: block; font-family: var(--dida-mono); font-size: .68rem;
  text-transform: uppercase; letter-spacing: .16em; color: var(--dida-muted);
}

/* mobile burger */
.dida-burger {
  display: none;
  margin-left: auto;
  width: 46px; height: 42px;
  border: 1px solid var(--dida-rule-strong); border-radius: var(--dida-radius-sm);
  background: var(--dida-paper-2); cursor: pointer;
  position: relative;
}
.dida-burger span, .dida-burger::before, .dida-burger::after {
  content: ""; position: absolute; left: 11px; right: 11px; height: 2px;
  background: var(--dida-olive-darker); transition: transform .25s var(--dida-ease), opacity .2s;
}
.dida-burger::before { top: 13px; }
.dida-burger span { top: 20px; }
.dida-burger::after { top: 27px; }
.dida-burger[aria-expanded="true"]::before { transform: translateY(7px) rotate(45deg); }
.dida-burger[aria-expanded="true"] span { opacity: 0; }
.dida-burger[aria-expanded="true"]::after { transform: translateY(-7px) rotate(-45deg); }

/* ========================================================= shell ======== */
.dida-shell {
  max-width: var(--dida-wrap);
  margin: 0 auto;
  padding: var(--dida-space-4) var(--dida-space-3) var(--dida-space-5);
  display: grid;
  grid-template-columns: var(--dida-side) minmax(0, 1fr);
  gap: var(--dida-space-4);
  align-items: start;
}

/* ====================================================== left nav ======== */
.dida-nav {
  background: var(--dida-leaf-soft);
  border: 1px solid var(--dida-rule-strong);
  border-top: 4px solid var(--dida-olive-deep);
  border-radius: var(--dida-radius);
  padding: var(--dida-space-2) var(--dida-space-2) var(--dida-space-3);
  position: sticky; top: 82px;
}
.dida-nav__label {
  display: block;
  font-family: var(--dida-mono); font-size: .66rem; text-transform: uppercase;
  letter-spacing: .18em; color: var(--dida-muted);
  padding: 8px 10px 6px;
}
.dida-nav ul { list-style: none; margin: 0; padding: 0; }
.dida-nav li { margin: 0; }
.dida-nav a {
  display: flex; align-items: baseline; gap: 9px;
  padding: 9px 10px;
  color: var(--dida-olive-darker);
  text-decoration: none;
  border-radius: var(--dida-radius-sm);
  border-left: 3px solid transparent;
  font-size: .95rem;
  transition: background .18s var(--dida-ease), border-color .18s var(--dida-ease), padding-left .18s var(--dida-ease);
}
.dida-nav a::before {
  content: "→";
  color: var(--dida-olive-bright);
  font-size: .82em;
  transform: translateY(1px);
}
.dida-nav a:hover, .dida-nav a:focus {
  background: var(--dida-leaf-band);
  border-left-color: var(--dida-olive-deep);
  padding-left: 14px;
  color: var(--dida-olive-darker);
}
.dida-nav a[aria-current="page"] {
  background: var(--dida-olive-deep);
  color: #fff;
  border-left-color: var(--dida-crimson);
}
.dida-nav a[aria-current="page"]::before { color: var(--dida-leaf); }

/* ====================================================== content ======== */
.dida-content { min-width: 0; }

.dida-crumb {
  font-size: .78rem; color: var(--dida-muted);
  margin: 0 0 var(--dida-space-3);
  display: flex; align-items: center; gap: 8px; flex-wrap: wrap;
}
.dida-crumb a { color: var(--dida-muted); }
.dida-crumb a:hover { color: var(--dida-link); }
.dida-crumb span[aria-current] { color: var(--dida-crimson); font-weight: 700; }
.dida-crumb::before { content: "▸"; color: var(--dida-olive-bright); }

/* offset accent bar above section titles (seed %4 = 3) */
.dida-content h2 {
  position: relative;
  padding-top: 14px;
}
.dida-content h2::before {
  content: ""; position: absolute; top: 0; left: 0;
  width: 46px; height: 4px; border-radius: 2px;
  background: linear-gradient(90deg, var(--dida-olive-bright), var(--dida-leaf));
}

.dida-lede { font-size: 1.08rem; color: var(--dida-ink); }

.dida-content a { text-decoration: underline; }

/* paper panels */
.dida-panel {
  background: var(--dida-paper);
  border: 1px solid var(--dida-rule);
  border-radius: var(--dida-radius);
  padding: var(--dida-space-3) var(--dida-space-3);
  margin-bottom: var(--dida-space-3);
}
.dida-panel--tint { background: var(--dida-paper-3); }

/* hero (seed %5 = 1: centered intro with preserved image) */
.dida-hero {
  background: var(--dida-paper);
  border: 1px solid var(--dida-rule);
  border-radius: var(--dida-radius);
  padding: var(--dida-space-4) var(--dida-space-4) var(--dida-space-3);
  margin-bottom: var(--dida-space-4);
  position: relative;
  overflow: hidden;
}
.dida-hero::after {
  content: ""; position: absolute; inset: 0 auto 0 0; width: 6px;
  background: linear-gradient(180deg, var(--dida-olive-bright), var(--dida-leaf));
}
.dida-hero__kicker {
  font-family: var(--dida-mono); font-size: .72rem; text-transform: uppercase;
  letter-spacing: .2em; color: var(--dida-accent); margin: 0 0 10px;
}
.dida-hero h1 { text-align: center; }
.dida-hero__body { max-width: 66ch; margin: 0 auto; text-align: center; }
.dida-hero__figure { margin: var(--dida-space-3) auto 0; max-width: 640px; }
.dida-hero__figure img {
  border: 1px solid var(--dida-rule-strong);
  border-radius: var(--dida-radius);
  width: 100%;
}
.dida-hero__figure figcaption {
  font-family: var(--dida-mono); font-size: .74rem; color: var(--dida-muted);
  margin-top: 8px; text-align: center;
}

/* action row */
.dida-actions { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; margin-top: var(--dida-space-3); }
.dida-btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 11px 20px;
  border-radius: var(--dida-radius);
  border: 2px solid var(--dida-olive-deep);
  background: var(--dida-olive-deep);
  color: #fff; text-decoration: none; font-weight: 700; font-size: .95rem;
  transition: transform .18s var(--dida-ease), background .18s var(--dida-ease), color .18s var(--dida-ease);
}
.dida-btn:hover, .dida-btn:focus { background: var(--dida-olive-darker); color: #fff; transform: translateY(-2px); }
.dida-btn--ghost { background: transparent; color: var(--dida-olive-deep); }
.dida-btn--ghost:hover, .dida-btn--ghost:focus { background: var(--dida-leaf-soft); color: var(--dida-olive-darker); }

/* ====================================================== cards ========== */
.dida-grid { display: grid; gap: var(--dida-space-3); }
.dida-grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); } /* seed %3 = 0 */
.dida-grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }

.dida-card {
  background: var(--dida-paper);
  border: 1px solid var(--dida-rule);
  border-top: 4px solid var(--dida-olive-bright);
  border-radius: var(--dida-radius);
  padding: var(--dida-space-3);
  transition: transform .2s var(--dida-ease), border-color .2s var(--dida-ease);
}
.dida-card:hover { transform: translateY(-3px); border-top-color: var(--dida-crimson); }
.dida-card h3 { margin-top: 0; }
.dida-card p { margin-bottom: 0; font-size: .95rem; }
.dida-card__tag {
  font-family: var(--dida-mono); font-size: .68rem; text-transform: uppercase;
  letter-spacing: .14em; color: var(--dida-accent); display: block; margin-bottom: 8px;
}

/* ================================================== doc / news list ==== */
.dida-list { list-style: none; margin: 0; padding: 0; }
.dida-list__row {
  display: grid;
  grid-template-columns: 92px minmax(0,1fr) auto;
  gap: var(--dida-space-3);
  align-items: baseline;
  padding: var(--dida-space-3) 0;
  border-bottom: 1px solid var(--dida-rule);
}
.dida-list__row:first-child { border-top: 1px solid var(--dida-rule); }
.dida-list__date {
  font-family: var(--dida-mono); font-size: .76rem; color: var(--dida-crimson);
  text-transform: uppercase; letter-spacing: .06em;
}
.dida-list__title { margin: 0 0 4px; font-size: 1.05rem; }
.dida-list__desc { margin: 0; font-size: .92rem; color: var(--dida-muted); }
.dida-list__meta { font-family: var(--dida-mono); font-size: .74rem; color: var(--dida-muted); white-space: nowrap; }

/* badge */
.dida-badge {
  display: inline-block; font-family: var(--dida-mono); font-size: .64rem;
  text-transform: uppercase; letter-spacing: .1em;
  padding: 3px 8px; border-radius: 999px;
  background: var(--dida-leaf-band); color: var(--dida-olive-darker);
  border: 1px solid var(--dida-rule-strong);
}

/* ====================================================== tables ========= */
.dida-tablewrap { overflow-x: auto; margin: 0 0 var(--dida-space-3); border: 1px solid var(--dida-rule); border-radius: var(--dida-radius); }
.dida-table { width: 100%; border-collapse: collapse; min-width: 620px; background: var(--dida-paper); font-size: .92rem; }
.dida-table caption {
  caption-side: top; text-align: left; padding: 12px 14px; font-weight: 700;
  color: var(--dida-olive-darker); background: var(--dida-leaf-soft);
  border-bottom: 1px solid var(--dida-rule);
}
.dida-table th, .dida-table td {
  border-bottom: 1px solid var(--dida-rule);
  padding: 10px 12px; text-align: left; vertical-align: top;
}
.dida-table thead th {
  background: var(--dida-leaf-band);
  color: var(--dida-olive-darker);
  font-size: .8rem; text-transform: uppercase; letter-spacing: .04em;
}
.dida-table tbody tr:nth-child(even) { background: var(--dida-paper-2); }
.dida-table td.dida-num { font-family: var(--dida-mono); }

/* ====================================================== gallery ======== */
.dida-gallery { display: grid; gap: var(--dida-space-2); grid-template-columns: repeat(2, 1fr); }
.dida-gallery figure { margin: 0; }
.dida-gallery img { border: 1px solid var(--dida-rule-strong); border-radius: var(--dida-radius); width: 100%; }
.dida-gallery figcaption { font-family: var(--dida-mono); font-size: .72rem; color: var(--dida-muted); margin-top: 6px; }

/* ====================================================== agenda ========= */
.dida-agenda { list-style: none; margin: 0; padding: 0; }
.dida-agenda__item {
  display: grid; grid-template-columns: 150px minmax(0,1fr);
  gap: var(--dida-space-3);
  padding: 12px 0; border-bottom: 1px dashed var(--dida-rule-strong);
}
.dida-agenda__time { font-family: var(--dida-mono); font-size: .82rem; color: var(--dida-accent); }
.dida-agenda__body h3 { margin: 0 0 3px; font-size: 1.02rem; }
.dida-agenda__body p { margin: 0; font-size: .9rem; color: var(--dida-muted); }
.dida-agenda__speaker { font-family: var(--dida-mono); font-size: .76rem; color: var(--dida-crimson); }

/* ===================================================== note/seed ======= */
.dida-note {
  border-left: 4px solid var(--dida-accent);
  background: var(--dida-paper-3);
  padding: 14px 16px;
  border-radius: 0 var(--dida-radius) var(--dida-radius) 0;
  font-size: .92rem; color: var(--dida-muted);
  margin: 0 0 var(--dida-space-3);
}

/* ===================================================== refs ============ */
.dida-refs ul {
  list-style: none; margin: 0; padding: 0;
  display: grid; grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px 22px;
}
.dida-refs li { margin: 0; }
.dida-refs li::before { content: "↗"; color: var(--dida-olive-bright); margin-right: 8px; font-size: .85em; }
@media (max-width: 640px) { .dida-refs ul { grid-template-columns: 1fr; } }

/* ===================================================== footer ========== */
.dida-footer {
  background: var(--dida-olive-darker);
  color: #e9efd8;
  border-top: 4px solid var(--dida-olive-bright);
}
.dida-footer__in {
  max-width: var(--dida-wrap); margin: 0 auto;
  padding: var(--dida-space-4) var(--dida-space-3) var(--dida-space-3);
  display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: var(--dida-space-4);
}
.dida-footer h3 {
  color: #fff; font-size: .8rem; text-transform: uppercase; letter-spacing: .14em;
  margin: 0 0 12px;
}
.dida-footer p { color: #cdd8b0; font-size: .9rem; }
.dida-footer ul { list-style: none; margin: 0; padding: 0; }
.dida-footer li { margin-bottom: 7px; }
.dida-footer a { color: #dfe8c6; text-decoration: none; font-size: .92rem; }
.dida-footer a:hover, .dida-footer a:focus { color: #fff; text-decoration: underline; }
.dida-footer__base {
  border-top: 1px solid rgba(255,255,255,.16);
  padding: 14px var(--dida-space-3);
  max-width: var(--dida-wrap); margin: 0 auto;
  display: flex; flex-wrap: wrap; gap: 10px; align-items: center; justify-content: space-between;
  font-family: var(--dida-mono); font-size: .76rem; color: #b9c69a;
}
.dida-top {
  background: transparent; border: 1px solid rgba(255,255,255,.35); color: #e9efd8;
  border-radius: var(--dida-radius-sm); padding: 6px 12px; cursor: pointer;
  font-family: var(--dida-mono); font-size: .74rem; text-decoration: none;
}
.dida-top:hover, .dida-top:focus { background: rgba(255,255,255,.12); color: #fff; }

/* ===================================================== reveal ========== */
.dida-reveal { opacity: 0; transform: translateY(14px); transition: opacity .6s var(--dida-ease), transform .6s var(--dida-ease); }
.dida-reveal.is-in { opacity: 1; transform: none; }

/* ===================================================== responsive ====== */
@media (max-width: 960px) {
  .dida-shell { grid-template-columns: minmax(0, 1fr); gap: var(--dida-space-3); }
  .dida-nav {
    position: fixed; inset: 64px 0 auto 0; top: 64px;
    border-radius: 0 0 var(--dida-radius) var(--dida-radius);
    max-height: 0; overflow: hidden; padding-top: 0; padding-bottom: 0;
    transition: max-height .3s var(--dida-ease);
    z-index: 35;
  }
  .dida-nav.is-open { max-height: 80vh; overflow: auto; padding-top: var(--dida-space-2); padding-bottom: var(--dida-space-3); }
  .dida-burger { display: block; }
  .dida-grid--3 { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .dida-footer__in { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  .dida-masthead__in { padding: 10px var(--dida-space-2); gap: 8px 10px; flex-wrap: wrap; }
  .dida-logos { order: 1; }
  .dida-logos img { height: 34px; }
  .dida-logos img.dida-logos__knmi { height: 38px; }
  .dida-burger { order: 2; }
  .dida-wordmark { order: 3; flex-basis: 100%; margin-left: 0; text-align: left; }
  .dida-wordmark__img { display: none; }
  .dida-wordmark__title { font-size: 1.02rem; }
  .dida-wordmark__sub { letter-spacing: .12em; }
  .dida-shell { padding: var(--dida-space-3) var(--dida-space-2) var(--dida-space-4); }
  .dida-grid--3, .dida-grid--2, .dida-gallery { grid-template-columns: 1fr; }
  .dida-hero { padding: var(--dida-space-3); }
  .dida-list__row { grid-template-columns: 1fr; gap: 6px; }
  .dida-agenda__item { grid-template-columns: 1fr; gap: 4px; }
  .dida-footer__in { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: .001ms !important; transition-duration: .001ms !important; scroll-behavior: auto !important; }
  .dida-reveal { opacity: 1; transform: none; }
}