/* Kleurvouw — stijl. Posities van de grote onderdelen (vel, voorraad, schuif, infopaneel)
   worden door app.js berekend zodat alles zonder scrollen past; hier staan de maten,
   kleuren en de 3D-vouw. */

:root {
  --bg: #ece6d9;
  --paper: #fbf8f1;
  --paper2: #f1ecdf;
  --ink: #2a2520;
  --muted: #7b7367;
  --line: #d8d0c0;
  --accent: #2b6cb0;
  --accent-ink: #ffffff;
  --empty: #e4ddcd;
  /* rood is karmijn, oranje zit precies tussen rood en geel in, geel is helder: alle drie goed uit elkaar te houden */
  --R: #cf1f3c; --Y: #f7cc14; --B: #3b82f6; --O: #f26a1b; --G: #22a06b; --P: #8b5cf6;
  --danger: #cf1f3c;
  --shadow: 0 8px 24px rgba(50, 35, 10, .14);
  --stripe: rgba(0, 0, 0, .38);
  --cell: 40px; --gap: 2px; --n: 14px; --fold: 0;
  --sat: env(safe-area-inset-top, 0px);
  --sab: env(safe-area-inset-bottom, 0px);
  --sal: env(safe-area-inset-left, 0px);
  --sar: env(safe-area-inset-right, 0px);
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #131217; --paper: #26242c; --paper2: #1d1c22; --ink: #f1ede6; --muted: #a39b8f; --line: #3b3842;
    --accent: #8ab8ff; --accent-ink: #0b1a2c; --empty: #35323c;
    --shadow: 0 8px 24px rgba(0, 0, 0, .5); --stripe: rgba(255, 255, 255, .45);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #131217; --paper: #26242c; --paper2: #1d1c22; --ink: #f1ede6; --muted: #a39b8f; --line: #3b3842;
  --accent: #8ab8ff; --accent-ink: #0b1a2c; --empty: #35323c;
  --shadow: 0 8px 24px rgba(0, 0, 0, .5); --stripe: rgba(255, 255, 255, .45);
  color-scheme: dark;
}

* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html, body { margin: 0; height: 100%; overflow: hidden; overscroll-behavior: none; }
body {
  position: fixed; inset: 0;
  background: var(--bg); color: var(--ink);
  font: 14px/1.3 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  touch-action: manipulation; user-select: none; -webkit-user-select: none;
}
button { font: inherit; color: inherit; }
[hidden] { display: none !important; }

/* ---------- raamwerk ---------- */
#app {
  position: absolute; inset: 0;
  display: flex; flex-direction: column;
  padding: var(--sat) var(--sar) var(--sab) var(--sal);
}
#top {
  flex: 0 0 auto; height: 48px; display: flex; align-items: center; gap: 4px; padding: 0 6px;
}
#top .logo { display: flex; align-items: center; gap: 6px; font-weight: 700; font-size: 15px; padding: 0 4px; }
#top .logo svg { width: 26px; height: 26px; }
#top .status { flex: 1 1 auto; min-width: 0; line-height: 1.2; }
#top .status b { display: block; font-size: 12px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
#top .status span { display: block; font-size: 10.5px; color: var(--muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
#top .mini { position: relative; width: 44px; height: 44px; flex: 0 0 44px; display: grid; place-items: center; border: 0; background: transparent; padding: 0; cursor: pointer; }
#top .mini .zoom { position: absolute; right: -2px; bottom: -1px; width: 16px; height: 16px; border-radius: 50%; background: var(--accent); color: var(--accent-ink); font-size: 10px; line-height: 16px; text-align: center; font-weight: 700; }
#top .mini .mgrid { width: 36px; height: 36px; display: grid; grid-template-columns: repeat(5, 1fr); gap: 1px; background: var(--line); padding: 1px; border-radius: 3px; }
.mgrid i { background: var(--empty); display: block; }
.icon-btn {
  width: 44px; height: 44px; flex: 0 0 44px; border: 0; background: transparent; border-radius: 12px;
  display: grid; place-items: center; cursor: pointer;
}
.icon-btn:active { background: var(--paper2); }
.icon-btn svg { width: 22px; height: 22px; stroke: currentColor; fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
@media (max-width: 439px) { #top .logo span { display: none; } }

#stage { flex: 1 1 auto; position: relative; overflow: hidden; perspective: 1400px; }

#actions {
  flex: 0 0 auto; height: 52px; display: flex; align-items: center; justify-content: center; gap: 8px; padding: 0 8px;
}
#actions .seg { display: contents; }
.btn {
  height: 44px; min-width: 44px; padding: 0 14px; border-radius: 12px; border: 1px solid var(--line);
  background: var(--paper); color: var(--ink); font-weight: 600; font-size: 13px; cursor: pointer;
  display: inline-flex; align-items: center; justify-content: center; gap: 6px; white-space: nowrap;
}
.btn:active { transform: translateY(1px); }
.btn.primary { background: var(--accent); color: var(--accent-ink); border-color: transparent; }
.btn.ghost { background: transparent; }
.btn:disabled { opacity: .45; cursor: default; }
.btn svg { width: 18px; height: 18px; stroke: currentColor; fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }

/* reclamebalk (alleen als er hoogte over is); de ruimte erboven houdt duimen bij de knoppen weg */
#adbar { flex: 0 0 auto; height: 66px; padding-top: 14px; display: flex; align-items: flex-start; justify-content: center; }
.ad {
  position: relative; width: 320px; max-width: 100%; height: 50px; border: 1px dashed var(--line); border-radius: 6px;
  background: var(--paper2); color: var(--muted); font-size: 11px; display: flex; align-items: center; justify-content: center;
}
.ad .adc { position: absolute; right: 4px; top: 2px; font-size: 10px; display: inline-flex; align-items: center; gap: 2px; color: #1a73e8; }
.ad .adc svg { width: 10px; height: 10px; }
.ad.wide { width: 728px; height: 50px; }

/* ---------- het vel ---------- */
#sheet { position: absolute; transform-style: preserve-3d; }
.half {
  position: absolute; display: grid; transform-style: preserve-3d;
  --GW: calc(var(--cell) * 5 + var(--gap) * 4);
}
/* staande telefoon: rijen spiegelen; links de rijcijfers, onder B de kolomcijfers */
[data-axis="v"] .half.a { grid-template-columns: var(--n) var(--GW); grid-template-rows: var(--GW); grid-template-areas: "rows grid"; }
[data-axis="v"] .half.b { grid-template-columns: var(--n) var(--GW); grid-template-rows: var(--GW) var(--n); grid-template-areas: "rows grid" ". cols"; }
[data-axis="v"] .half.a .nums.cols { display: none; }
/* vouwbaar/liggend: kolommen spiegelen; boven de kolomcijfers, rijcijfers aan de buitenkant */
[data-axis="h"] .half.a { grid-template-columns: var(--n) var(--GW); grid-template-rows: var(--n) var(--GW); grid-template-areas: ". cols" "rows grid"; }
[data-axis="h"] .half.b { grid-template-columns: var(--GW) var(--n); grid-template-rows: var(--n) var(--GW); grid-template-areas: "cols ." "grid rows"; }
.nums { display: grid; color: var(--muted); font-size: max(10px, calc(var(--n) * 0.72)); font-weight: 600; }
.nums.rows { grid-area: rows; grid-template-rows: repeat(5, 1fr); align-items: center; justify-items: center; }
.nums.cols { grid-area: cols; grid-template-columns: repeat(5, 1fr); align-items: center; justify-items: center; }
.half.a .nums { color: var(--accent); }

/* het vel ligt vlak op de achtergrond: een haarlijn in plaats van een zware schaduw */
.grid {
  grid-area: grid; display: grid; grid-template-columns: repeat(5, var(--cell)); grid-template-rows: repeat(5, var(--cell)); gap: var(--gap);
  background: var(--paper); border-radius: 6px; box-shadow: 0 0 0 1px var(--line);
}
.cell {
  position: relative; z-index: 1; background: var(--empty); border-radius: max(2px, calc(var(--cell) * 0.08)); cursor: pointer;
  transition: background-color .12s;
}
.cell.c-R, .rcell.c-R, .pcell.c-R, .mgrid .c-R { background-color: var(--R); }
.cell.c-Y, .rcell.c-Y, .pcell.c-Y, .mgrid .c-Y { background-color: var(--Y); }
.cell.c-B, .rcell.c-B, .pcell.c-B, .mgrid .c-B { background-color: var(--B); }
.cell.c-O, .rcell.c-O, .pcell.c-O, .mgrid .c-O { background-color: var(--O); }
.cell.c-G, .rcell.c-G, .pcell.c-G, .mgrid .c-G { background-color: var(--G); }
.cell.c-P, .rcell.c-P, .pcell.c-P, .mgrid .c-P { background-color: var(--P); }
/* bruggetjes tussen vakjes van hetzelfde blokje */
.cell .jr, .cell .jb { position: absolute; display: none; background: inherit; }
.cell .jr { right: calc(var(--gap) * -1 - 0.5px); top: 15%; bottom: 15%; width: calc(var(--gap) + 1px); }
.cell .jb { bottom: calc(var(--gap) * -1 - 0.5px); left: 15%; right: 15%; height: calc(var(--gap) + 1px); }
.cell.j-r .jr, .cell.j-b .jb { display: block; }
.cell.flash { animation: flash .35s ease-out; }
@keyframes flash { 0%, 60% { background-color: var(--danger); } 100% { background-color: var(--empty); } }
.cell.quiz { animation: pulse 1s infinite; box-shadow: 0 0 0 3px var(--accent); }
@keyframes pulse { 50% { opacity: .5; } }
.cell.ok { box-shadow: 0 0 0 3px var(--G); background-color: var(--G); }
.cell.ok::after { content: "✓"; position: absolute; inset: 0; display: grid; place-items: center; color: #fff; font-weight: 700; font-size: calc(var(--cell) * 0.5); }
/* het blokje schoof op omdat het anker niet paste: korte wip zodat je het ziet */
.cell.snap { animation: snap .35s ease-out; }
@keyframes snap { 30% { transform: translate(2px, -2px); } 60% { transform: translate(-2px, 2px); } }
/* hint: het goed gelegde blokje licht even op */
.cell.hinted { animation: hinted .9s ease-out; }
@keyframes hinted { 0%, 40% { box-shadow: 0 0 0 3px var(--accent); } 100% { box-shadow: 0 0 0 0 transparent; } }
/* slepen: waar het blokje zou landen */
.cell.drop-ok { box-shadow: inset 0 0 0 3px var(--G); }
.cell.drop-bad { box-shadow: inset 0 0 0 3px var(--danger); }
.dragghost { position: absolute; z-index: 8; pointer-events: none; opacity: .92; filter: drop-shadow(0 6px 10px rgba(0, 0, 0, .3)); }
.dragghost .pcell { border-radius: max(2px, calc(var(--cell) * 0.08)); }
.grid, #stock { touch-action: none; }
#info .stars.pop { animation: pop .6s cubic-bezier(.3, 1.6, .5, 1); }
@keyframes pop { 0% { transform: scale(.4); opacity: 0; } 100% { transform: scale(1); opacity: 1; } }
/* symbolen voor kleurenblinden: rood = horizontaal, blauw = verticaal, geel = diagonaal */
[data-symbols="1"] .c-R::before, [data-symbols="1"] .c-Y::before, [data-symbols="1"] .c-B::before,
[data-symbols="1"] .c-O::before, [data-symbols="1"] .c-G::before, [data-symbols="1"] .c-P::before {
  content: ""; position: absolute; inset: 0; border-radius: inherit; pointer-events: none;
  --s: max(1.5px, calc(var(--cell) * 0.07)); --p: calc(var(--s) * 3.2);
}
/* strepen (≥ 3:1 op elke kleur): donker op geel, oranje en groen; in het donkere thema licht op rood, blauw en paars.
   data-symbols staat op <html> zelf, dus de themaselector hangt eraan vast (geen spatie). */
[data-symbols="1"] .c-Y::before, [data-symbols="1"] .c-O::before, [data-symbols="1"] .c-G::before { --stripe: rgba(0, 0, 0, .6); }
[data-symbols="1"] .c-R::before, [data-symbols="1"] .c-B::before, [data-symbols="1"] .c-P::before { --stripe: rgba(0, 0, 0, .6); }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"])[data-symbols="1"] .c-R::before, :root:not([data-theme="light"])[data-symbols="1"] .c-B::before,
  :root:not([data-theme="light"])[data-symbols="1"] .c-P::before { --stripe: rgba(255, 255, 255, .86); }
}
:root[data-theme="dark"][data-symbols="1"] .c-R::before, :root[data-theme="dark"][data-symbols="1"] .c-B::before,
:root[data-theme="dark"][data-symbols="1"] .c-P::before { --stripe: rgba(255, 255, 255, .86); }
/* hoekjes en kleine voorbeelden: vaste fijne strepen zodat er altijd drie of meer in passen */
[data-symbols="1"] .rcell .exp::before, [data-symbols="1"] .pcell::before, [data-symbols="1"] #peek .mgrid i::before { --s: 2px; --p: 5.5px; }
[data-symbols="1"] .c-R::before { background: repeating-linear-gradient(0deg, var(--stripe) 0 var(--s), transparent var(--s) var(--p)); }
[data-symbols="1"] .c-B::before { background: repeating-linear-gradient(90deg, var(--stripe) 0 var(--s), transparent var(--s) var(--p)); }
[data-symbols="1"] .c-Y::before { background: repeating-linear-gradient(45deg, var(--stripe) 0 var(--s), transparent var(--s) var(--p)); }
[data-symbols="1"] .c-O::before { background: repeating-linear-gradient(0deg, var(--stripe) 0 var(--s), transparent var(--s) var(--p)), repeating-linear-gradient(45deg, var(--stripe) 0 var(--s), transparent var(--s) var(--p)); }
[data-symbols="1"] .c-G::before { background: repeating-linear-gradient(90deg, var(--stripe) 0 var(--s), transparent var(--s) var(--p)), repeating-linear-gradient(45deg, var(--stripe) 0 var(--s), transparent var(--s) var(--p)); }
[data-symbols="1"] .c-P::before { background: repeating-linear-gradient(0deg, var(--stripe) 0 var(--s), transparent var(--s) var(--p)), repeating-linear-gradient(90deg, var(--stripe) 0 var(--s), transparent var(--s) var(--p)); }
.pcell, .rcell, .mgrid i { position: relative; --cell: 14px; }
.rcell { --cell: var(--rc); }
.mgrid i { --cell: 7px; }

/* de vouwlijn */
#seam { position: absolute; pointer-events: none; }
#seam::before { content: ""; position: absolute; inset: 0; margin: auto; border: 0 dashed var(--muted); opacity: .6; }
[data-axis="v"] #seam::before { height: 0; border-top-width: 2px; }
[data-axis="h"] #seam::before { width: 0; border-left-width: 2px; }
#app[data-state="closed"] #seam::before { opacity: 0; }
#seam .hinge { position: absolute; background: #111; border-radius: 3px; display: none; }
#seam .hinge.on { display: block; }

/* de eerste helft klapt om de vouwlijn; de achterkant toont de vakjes gespiegeld */
.half.a { backface-visibility: visible; will-change: transform; }
[data-axis="v"] .half.a { transform: translateZ(0.5px) rotateX(calc(var(--fold) * -180deg)); }
[data-axis="h"] .half.a { transform: translateZ(0.5px) rotateY(calc(var(--fold) * 180deg)); }
.half.a .nums { opacity: calc(1 - var(--fold) * 2); }
.half.a .grid::after {
  content: ""; position: absolute; inset: 0; border-radius: inherit; pointer-events: none;
  background: linear-gradient(to bottom, rgba(0, 0, 0, 0), rgba(0, 0, 0, .35)); opacity: calc(var(--fold) * 1.2);
}
[data-axis="h"] .half.a .grid::after { background: linear-gradient(to right, rgba(0, 0, 0, 0), rgba(0, 0, 0, .35)); }
.half.b .grid::after {
  content: ""; position: absolute; inset: 0; border-radius: inherit; pointer-events: none;
  background: rgba(0, 0, 0, .35); opacity: calc(var(--fold) * (1 - var(--fold)) * 2);
}
/* instelling "Doorzicht bij vouwen": de klappende helft wordt doorschijnend, zodat je de kleuren
   over elkaar ziet vallen. 'vervagen' begint pas voorbij de helft van de vouw (± 80°),
   'glas' is van begin af aan half doorzichtig. De donkere gloed op de helft gaat dan uit. */
/* alleen tijdens de vouw met de knop (data-foldanim), nooit bij de schuif: anders kun je gluren zonder een vouw te betalen.
   Gemeenschappelijk: het papier en de lege vakjes van de klappende helft verdwijnen en de donkere gloed gaat uit,
   zodat alleen de gekleurde vakjes over de andere helft vallen. */
[data-foldfx]:not([data-foldfx="uit"]) #app[data-foldanim="1"] .half.a .grid { background: transparent; box-shadow: none; }
[data-foldfx]:not([data-foldfx="uit"]) #app[data-foldanim="1"] .half.a .grid::after { opacity: 0; }
[data-foldfx]:not([data-foldfx="uit"]) #app[data-foldanim="1"] .half.a .cell:not([class*="c-"]) { background: transparent; }
[data-foldfx]:not([data-foldfx="uit"]) #app[data-foldanim="1"] .half.b .grid::after { opacity: 0; }
/* de vijf varianten die uit een proef met tien overbleven (zie TESTVERSLAG.md):
   glas = half doorzichtig en verzadigd; licht = doorzichtiger en helderder; laat = ondoorzichtig tot 70 %, dan snel doorzichtig;
   omtrek = alleen gekleurde randen, zodat je precies ziet waar elk vakje landt; pastel = zachte 50 %-menging zonder verzadiging */
[data-foldfx="glas"] #app[data-foldanim="1"] .half.a .grid { opacity: calc(1 - var(--fold) * 0.45); filter: saturate(1.8) contrast(1.15); }
[data-foldfx="licht"] #app[data-foldanim="1"] .half.a .grid { opacity: calc(1 - var(--fold) * 0.6); filter: saturate(2) brightness(1.1); }
[data-foldfx="laat"] #app[data-foldanim="1"] .half.a .grid { opacity: calc(1 - max(0, var(--fold) - 0.7) * 2.2); filter: saturate(1.6); }
[data-foldfx="omtrek"] #app[data-foldanim="1"] .half.a .cell { background-color: transparent !important; box-shadow: inset 0 0 0 max(3px, calc(var(--cell) * 0.14)) currentColor; }
[data-foldfx="omtrek"] #app[data-foldanim="1"] .half.a .cell.c-R { color: var(--R); } [data-foldfx="omtrek"] #app[data-foldanim="1"] .half.a .cell.c-Y { color: var(--Y); } [data-foldfx="omtrek"] #app[data-foldanim="1"] .half.a .cell.c-B { color: var(--B); }
[data-foldfx="omtrek"] #app[data-foldanim="1"] .half.a .cell .jr, [data-foldfx="omtrek"] #app[data-foldanim="1"] .half.a .cell .jb { display: none; }
[data-foldfx="omtrek"] #app[data-foldanim="1"] .half.a .grid { opacity: calc(1 - var(--fold) * 0.25); }
[data-foldfx="pastel"] #app[data-foldanim="1"] .half.a .grid { opacity: 0.5; filter: saturate(1.2) brightness(1.15); }
.grid { position: relative; }
#app[data-state="closed"] .half.a .cell, #app[data-state="closing"] .half.a .cell, #app[data-state="opening"] .half.a .cell,
#app[data-state="closed"] .half.b .cell { cursor: default; }

/* het resultaat/doel op de plek van de helft die blijft liggen */
#result {
  position: absolute; display: grid; grid-template-columns: repeat(5, var(--rc)); grid-template-rows: repeat(5, var(--rc)); gap: var(--gap);
  background: var(--paper); border-radius: 6px; box-shadow: 0 0 0 1px var(--line); transform: translateZ(3px);
  opacity: 0; transition: opacity .18s; pointer-events: none;
}
#result.on { opacity: 1; pointer-events: auto; }
#app[data-mode="memory"] #result { transition: none; }
.rcell { background: var(--empty); border-radius: max(2px, calc(var(--rc) * 0.08)); }
.rcell .exp { position: absolute; right: 0; top: 0; width: 52%; height: 52%; clip-path: polygon(0 0, 100% 0, 100% 100%); border-top-right-radius: inherit; }
.rcell .exp.c-R { background: var(--R); } .rcell .exp.c-Y { background: var(--Y); } .rcell .exp.c-B { background: var(--B); }
.rcell .exp.c-O { background: var(--O); } .rcell .exp.c-G { background: var(--G); } .rcell .exp.c-P { background: var(--P); }
.rcell .exp.none { background: var(--paper); clip-path: none; width: 36%; height: 36%; right: 6%; top: 6%; border-radius: 50%; border: 2px solid var(--ink); }
.rcell .exp.none::after { content: ""; position: absolute; left: -15%; top: 50%; width: 130%; height: 2px; background: var(--ink); transform: rotate(-45deg); }
.rcell.wrong { outline: 2px solid var(--ink); outline-offset: -2px; }
#result.target .rcell.wrong { outline: 0; }
#result.target .rcell .exp { display: none; }
#result .label {
  position: absolute; left: 0; right: 0; bottom: 100%; margin-bottom: 4px; text-align: center; font-size: 11px; color: var(--muted); font-weight: 600;
}
[data-axis="h"] #result .label { bottom: auto; top: 100%; margin-top: 4px; }

/* ---------- vouwschuif ---------- */
#slider { position: absolute; display: none; touch-action: none; }
#slider.on { display: block; }
#slider .track { position: absolute; background: var(--paper2); border: 1px solid var(--line); border-radius: 22px; }
#slider[data-dir="v"] .track { left: 2px; right: 2px; top: 0; bottom: 0; }
#slider[data-dir="h"] .track { top: 2px; bottom: 2px; left: 0; right: 0; }
#slider .lbl { position: absolute; font-size: 10px; color: var(--muted); font-weight: 600; pointer-events: none; }
#slider[data-dir="v"] .lbl.open { top: 6px; left: 0; right: 0; text-align: center; }
#slider[data-dir="v"] .lbl.closed { bottom: 6px; left: 0; right: 0; text-align: center; }
#slider[data-dir="h"] .lbl.open { left: 8px; top: 0; bottom: 0; display: flex; align-items: center; }
#slider[data-dir="h"] .lbl.closed { right: 8px; top: 0; bottom: 0; display: flex; align-items: center; }
#slider .knob {
  position: absolute; width: 44px; height: 44px; border-radius: 50%; background: var(--accent); color: var(--accent-ink);
  box-shadow: 0 2px 8px rgba(0, 0, 0, .25); display: grid; place-items: center; cursor: grab;
}
#slider .knob svg { width: 20px; height: 20px; stroke: currentColor; fill: none; stroke-width: 2.2; stroke-linecap: round; stroke-linejoin: round; }
#slider[data-dir="v"] .knob { left: 2px; top: calc(var(--fold) * (100% - 44px)); }
#slider[data-dir="h"] .knob { top: 2px; left: calc(var(--fold) * (100% - 44px)); }
#slider[data-dir="v"] .knob svg { transform: rotate(90deg); }

/* ---------- voorraad ---------- */
#stock { position: absolute; display: flex; gap: 4px; transition: opacity .2s; }
#stock[data-dir="col"] { flex-direction: column; }
#stock[data-dir="row"] { flex-direction: row; }
#stock[data-dir="wrap"] { flex-direction: row; flex-wrap: wrap; align-content: flex-start; }
#stock { transition: opacity .2s, visibility 0s; }
#stock.off { opacity: 0; pointer-events: none; visibility: hidden; transition: opacity .2s, visibility 0s .2s; }
#stock.wiggle { animation: wiggle .4s; }
@keyframes wiggle { 20% { transform: translateX(-5px); } 40% { transform: translateX(5px); } 60% { transform: translateX(-4px); } 80% { transform: translateX(4px); } }
.piece {
  position: relative; flex: 1 1 0; min-height: 44px; min-width: 44px; border: 1px solid var(--line); border-radius: 10px; background: var(--paper);
  cursor: pointer; display: grid; place-items: center; padding: 0;
}
#stock[data-dir="wrap"] .piece { flex: 0 0 auto; width: var(--slot); height: var(--slot); }
.piece.sel { border-color: var(--ink); box-shadow: 0 0 0 2px var(--ink); background: var(--paper2); }
/* het draai-hintje pas na een bewuste tik; een automatisch gekozen blokje draait niet bij de eerste tik */
.piece.sel.explicit::after { content: "↻"; position: absolute; right: 3px; bottom: 1px; font-size: 11px; color: var(--muted); }
.piece .pgrid { position: relative; }
.pcell { position: absolute; border-radius: 2px; }
.piece.used { opacity: .22; cursor: default; }
.piece.used::after { content: none; }

/* ---------- infopaneel (dichte stand) ---------- */
#info {
  position: absolute; display: none; flex-direction: column; align-items: center; justify-content: center; gap: 8px; text-align: center;
  padding: 6px; overflow: hidden;
}
#info.on { display: flex; }
#info h2 { margin: 0; font-size: 15px; }
#info p { margin: 0; font-size: 12px; color: var(--muted); max-width: 32em; }
#info .modes { display: inline-flex; border: 1px solid var(--line); border-radius: 12px; overflow: hidden; background: var(--paper); }
#info .modes button { height: 44px; padding: 0 12px; border: 0; background: transparent; font-weight: 600; font-size: 13px; cursor: pointer; }
#info .modes button.on { background: var(--accent); color: var(--accent-ink); }
#info .stars { font-size: 26px; letter-spacing: 2px; line-height: 1; }
#info .stars .dim { opacity: .25; }
#info .score { font-size: 12px; color: var(--muted); }
#info .row { display: flex; gap: 8px; flex-wrap: wrap; justify-content: center; }
#info .bar { width: 160px; height: 8px; border-radius: 4px; background: var(--empty); overflow: hidden; }
#info .bar i { display: block; height: 100%; background: var(--O); }
#info .cue { font-size: 11px; color: var(--muted); }
#info .devhint { font-size: 11px; color: var(--accent); font-weight: 600; }
#info .explain { font-size: 10.5px; color: var(--muted); }
#info .sharebox { display: flex; flex-direction: column; gap: 6px; width: min(100%, 360px); }
#info .sharebox textarea { width: 100%; font: 12px/1.35 ui-monospace, Menlo, Consolas, monospace; color: var(--ink); background: var(--paper); border: 1px solid var(--line); border-radius: 8px; padding: 4px 6px; resize: none; user-select: text; -webkit-user-select: text; white-space: pre; overflow: auto; }
#info .ad-holder { order: -1; }
@media (min-width: 700px) and (min-height: 600px) {
  #info h2 { font-size: 20px; } #info p { font-size: 14px; } #info .cue, #info .devhint { font-size: 13px; } #info .stars { font-size: 34px; } #info .modes button { font-size: 15px; height: 48px; }
}

/* kijkje op het doel (ingedrukt houden) */
#peek { position: absolute; display: none; place-items: center; background: var(--paper); border-radius: 10px; box-shadow: var(--shadow); z-index: 5; padding: 8px; }
#peek.on { display: grid; }
#peek .mgrid { display: grid; grid-template-columns: repeat(5, var(--pk)); grid-template-rows: repeat(5, var(--pk)); gap: 2px; }
#peek .mgrid i { --cell: var(--pk); border-radius: 3px; display: block; }

/* ---------- lagen en dialogen ---------- */
.overlay { position: fixed; inset: 0; background: var(--bg); display: none; align-items: center; justify-content: center; flex-direction: column; gap: 12px; text-align: center; padding: 24px; z-index: 20; }
.overlay.on { display: flex; }
.overlay svg { width: 64px; height: 64px; stroke: var(--ink); fill: none; stroke-width: 1.5; }
dialog {
  border: 0; border-radius: 16px; padding: 0; background: var(--paper); color: var(--ink); box-shadow: var(--shadow);
  width: min(92vw, 520px); max-height: 86vh; max-height: 86dvh;
}
dialog::backdrop { background: rgba(0, 0, 0, .45); }
/* op een vouwtoestel met twee schermhelften blijft een dialoog binnen de linkerhelft */
html[data-layout="spanned-h"] dialog { margin-left: 12px; margin-right: auto; width: calc(var(--segL, 50vw) - 24px); }
dialog .dhead { display: flex; align-items: center; justify-content: space-between; padding: 8px 8px 8px 16px; border-bottom: 1px solid var(--line); position: sticky; top: 0; background: var(--paper); }
dialog .dhead h2 { margin: 0; font-size: 16px; }
dialog .dbody { padding: 12px 16px 16px; overflow: auto; max-height: calc(86vh - 56px); max-height: calc(86dvh - 56px); }
.levels { display: grid; grid-template-columns: repeat(auto-fill, minmax(56px, 1fr)); gap: 8px; }
.lvl { height: 56px; border-radius: 10px; border: 1px solid var(--line); background: var(--paper2); display: flex; flex-direction: column; align-items: center; justify-content: center; font-weight: 700; cursor: pointer; font-size: 14px; }
.lvl small { font-size: 10px; letter-spacing: 1px; font-weight: 400; }
.lvl.locked { opacity: .4; cursor: default; }
.lvl.shake { animation: wiggle .4s; }
.daily small.warn { opacity: 1; font-weight: 600; }
.lvl.now { outline: 2px solid var(--accent); }
.daily { width: 100%; margin-bottom: 12px; height: 56px; border-radius: 12px; border: 1px solid var(--line); background: var(--accent); color: var(--accent-ink); font-weight: 700; cursor: pointer; display: flex; align-items: center; justify-content: space-between; padding: 0 16px; }
.daily small { font-weight: 400; opacity: .9; }
.setting { display: flex; align-items: center; justify-content: space-between; gap: 12px; min-height: 44px; padding: 4px 0; border-bottom: 1px solid var(--line); font-size: 13px; }
.setting:last-child { border-bottom: 0; }
.setting select, .setting input[type="checkbox"] { height: 36px; font: inherit; }
.setting input[type="checkbox"] { width: 24px; height: 24px; }
.setting .sub { display: block; font-size: 11px; color: var(--muted); }
.detected { font-size: 11px; color: var(--muted); margin: 0 0 8px; }

/* coach (uitleg) */
/* de uitleg neemt plaats in de indeling (het vel krimpt mee), nooit erbovenop */
#coach {
  flex: 0 0 auto; z-index: 15; background: var(--paper); border: 1px solid var(--line);
  border-radius: 14px; box-shadow: var(--shadow); padding: 8px 12px; display: flex; flex-direction: column; gap: 6px; max-width: 520px; margin: 0 auto 6px; width: calc(100% - 16px);
}
#app[data-tutorial="1"] #actions, #app[data-tutorial="1"] #adbar { display: none; }
#coach p { margin: 0; font-size: 13px; flex: 1 1 auto; }
#coach .row { display: flex; gap: 8px; justify-content: flex-end; }
#coach .step { font-size: 10px; color: var(--muted); }

/* simulatiebalk (test) */
#simbar { position: fixed; right: 8px; top: calc(50px + var(--sat)); z-index: 30; background: #222; color: #fff; font-size: 10px; border-radius: 8px; padding: 3px 6px; display: flex; gap: 6px; align-items: center; opacity: .85; }
#simbar button { font-size: 10px; height: 24px; border-radius: 6px; border: 0; background: #555; color: #fff; padding: 0 8px; cursor: pointer; }
#simbar.hidden { display: none; }

/* vouwbaar met twee segmenten: kop- en voetbalk om het scharnier heen */
#app[data-layout="spanned-h"] #top, #app[data-layout="spanned-h"] #actions {
  display: grid; grid-template-columns: var(--segL) var(--hinge) var(--segR); gap: 0; padding: 0;
}
#app[data-layout="spanned-h"] #top > .l, #app[data-layout="spanned-h"] #actions > .l { grid-column: 1; display: flex; align-items: center; gap: 4px; padding: 0 6px; min-width: 0; }
#app[data-layout="spanned-h"] #top > .r, #app[data-layout="spanned-h"] #actions > .r { grid-column: 3; display: flex; align-items: center; gap: 4px; padding: 0 6px; min-width: 0; justify-content: flex-end; }
#app[data-layout="spanned-h"] #actions > .l { justify-content: center; }
#app[data-layout="spanned-h"] #actions > .r { justify-content: center; }
#app[data-layout="spanned-h"] #adbar { display: grid; grid-template-columns: var(--segL) var(--hinge) var(--segR); justify-content: stretch; }
#app[data-layout="spanned-h"] #adbar .ad { grid-column: 1; justify-self: center; }
#app[data-layout="spanned-h"] #adbar[hidden] { display: none; }
#top > .l, #top > .r, #actions > .l, #actions > .r { display: contents; }

/* grotere koptekst op tablets en open vouwtoestellen */
@media (min-width: 700px) and (min-height: 600px) {
  #top { height: 56px; }
  #top .logo { font-size: 17px; }
  #top .status b { font-size: 14px; }
  #top .status span { font-size: 12px; }
  #actions { height: 60px; }
  .btn { font-size: 14px; height: 48px; }
}

@media (prefers-reduced-motion: reduce) { .cell, #result, #stock { transition: none; } }