:root{
  --bg:#efede8;
  --panel:#f4f2ee;
  --card:#f6f4f1;
  --input:#f8f7f4;
  --text:#182230;
  --muted:#667085;
  --line:#d2d7df;
  --blue:#2563eb;
  --danger:#c9362b;
  --success:#2f8f46;
}
*{box-sizing:border-box}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;margin:0;background:var(--bg);color:var(--text)}
button,input,textarea,select{font:inherit}button{cursor:pointer}
header{display:flex;justify-content:space-between;align-items:center;gap:18px;padding:22px 28px;background:var(--panel);border-bottom:1px solid #ddd8cf;position:sticky;top:0;z-index:10}
header h1{margin:0;font-size:2rem;letter-spacing:-.02em}header p{margin:5px 0 0;color:var(--muted)}
header button{background:var(--blue);color:#fff;border:0;border-radius:12px;padding:12px 18px;font-weight:700;box-shadow:0 2px 8px rgba(37,99,235,.18)}
main{display:grid;grid-template-columns:repeat(4,minmax(245px,1fr));gap:16px;padding:20px;align-items:start}
.column{padding:15px;border-radius:18px;min-height:360px}.column-now{background:#efe0e0}.column-later{background:#eee7cf}.column-ideas{background:#dde7f1}.column-done{background:#dde9dd}
.column-title{display:flex;justify-content:space-between;align-items:center;gap:10px}.title-left{display:flex;align-items:center;gap:9px}.title-left h2{margin:0;font-size:1.42rem}.icon{display:grid;place-items:center;width:30px;height:30px;border-radius:50%;font-weight:800;background:#f4f1eb;border:1px solid rgba(0,0,0,.04)}
.count{display:inline-flex;align-items:center;justify-content:center;min-width:30px;height:30px;padding:0 9px;border-radius:999px;background:#f4f1eb;border:1px solid rgba(0,0,0,.04);font-weight:750;font-size:.92rem}
.column-help{margin:7px 0 14px;color:var(--muted);font-size:.92rem}.task-list:empty::after{content:'Nog niets hier';display:block;color:#8a94a3;font-size:.9rem;padding:10px 4px}
.task{background:var(--card);padding:14px;border-radius:15px;margin-bottom:10px;box-shadow:0 2px 8px rgba(16,24,40,.05);border:1px solid rgba(15,23,42,.06)}
.task h3{margin:0 0 5px;font-size:1.08rem;line-height:1.3}.task p{color:var(--muted);margin:0 0 10px;line-height:1.4;font-size:.94rem}
.sub{display:flex;gap:8px;align-items:center;margin:5px 0;padding:4px 0}.sub input[type="checkbox"]{width:18px;height:18px;accent-color:var(--blue)}.sub span{flex:1;line-height:1.3;font-size:.95rem}.sub.done span{text-decoration:line-through;opacity:.55}
.sub-delete{border:0;background:transparent;color:#98a2b3;padding:3px 6px;font-size:1.05rem}.sub-delete:hover{color:var(--danger)}
.subadd{display:flex;gap:7px;margin-top:10px}.subadd input{flex:1;min-width:0;border:1px solid var(--line);border-radius:10px;padding:9px 10px;background:var(--input)}.subadd button{width:40px;border:1px solid var(--line);border-radius:10px;background:var(--input);font-weight:800}
.row{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:7px;margin-top:12px;padding-top:11px;border-top:1px solid #e8e2d9}.row button{border:1px solid var(--line);background:var(--input);border-radius:9px;padding:8px 9px;font-size:.9rem;white-space:nowrap}.row .btn-done{color:var(--success);border-color:#c8dccd;background:#eef6ef}.row .btn-delete{color:var(--danger);border-color:#e9c2bd;background:#fdf1ef}
dialog{width:min(92vw,480px);border:0;border-radius:18px;padding:20px;background:var(--panel);box-shadow:0 18px 55px rgba(0,0,0,.25)}dialog::backdrop{background:rgba(15,23,42,.35)}form{display:grid;gap:12px}form h3{margin:0 0 4px}input,textarea,select{padding:11px 12px;border:1px solid var(--line);border-radius:10px;background:var(--input);color:var(--text)}.actions{display:flex;justify-content:flex-end;gap:8px;margin-top:4px}.actions button{border-radius:10px;padding:9px 13px;border:1px solid var(--line);background:var(--input)}.actions button:last-child{background:var(--blue);color:#fff;border-color:var(--blue);font-weight:700}
@media(max-width:900px){header{align-items:flex-start;padding:18px}header h1{font-size:1.6rem}main{grid-template-columns:1fr;padding:14px}.column{min-height:180px}.row{grid-template-columns:repeat(2,minmax(0,1fr))}}


/* Weergave-instellingen */
html{background:#111}
body{filter:brightness(var(--page-brightness,1));transition:background .2s ease,color .2s ease,filter .15s ease}
.header-actions{display:flex;gap:9px;align-items:center}
.secondary-btn{background:#e6e3dd!important;color:var(--text)!important;border:1px solid #cbc7bf!important;box-shadow:none!important;font-weight:650!important}
.display-dialog{background:var(--panel);color:var(--text)}
.display-dialog label{font-weight:700}
.brightness-row{display:grid;grid-template-columns:auto 1fr auto;gap:10px;align-items:center;color:var(--muted);font-size:.88rem}
.brightness-row input{padding:0;border:0;background:transparent;width:100%}
.display-note{margin:0;color:var(--muted);font-size:.9rem}

html[data-theme="dark"]{
  --bg:#121416;
  --panel:#1a1d20;
  --card:#22262a;
  --input:#292d31;
  --text:#edf0f4;
  --muted:#aeb6c2;
  --line:#3b424a;
  --blue:#4c82f7;
  --danger:#ff857c;
  --success:#71c789;
}
html[data-theme="dark"] body{background:var(--bg);color:var(--text)}
html[data-theme="dark"] header{background:var(--panel);border-bottom-color:#2d3238}
html[data-theme="dark"] .column-now{background:#2a2021}
html[data-theme="dark"] .column-later{background:#29261d}
html[data-theme="dark"] .column-ideas{background:#1c2731}
html[data-theme="dark"] .column-done{background:#1d2a21}
html[data-theme="dark"] .icon,html[data-theme="dark"] .count{background:#25292d;border-color:#343a40}
html[data-theme="dark"] .task{background:var(--card);border-color:#30363d;box-shadow:0 2px 8px rgba(0,0,0,.22)}
html[data-theme="dark"] .subadd input,html[data-theme="dark"] input,html[data-theme="dark"] textarea,html[data-theme="dark"] select{background:var(--input);color:var(--text);border-color:var(--line)}
html[data-theme="dark"] .subadd button,html[data-theme="dark"] .row button,html[data-theme="dark"] .actions button{background:#292d31;color:var(--text);border-color:var(--line)}
html[data-theme="dark"] .row{border-top-color:#353a40}
html[data-theme="dark"] .row .btn-done{background:#203326;color:#8bd49d;border-color:#34563d}
html[data-theme="dark"] .row .btn-delete{background:#382321;color:#ff9a92;border-color:#653732}
html[data-theme="dark"] .secondary-btn{background:#2b3035!important;color:#edf0f4!important;border-color:#414850!important}
html[data-theme="dark"] dialog{background:var(--panel);color:var(--text)}

@media(max-width:900px){.header-actions{flex-wrap:wrap;justify-content:flex-end}.secondary-btn{padding:9px 11px!important}}