:root{--ink:#414938;--muted:#71796a;--paper:#f7f6ef;--sage:#64774e;--border:#dde1d2;--card:#fffef9}*{box-sizing:border-box}[hidden]{display:none!important}body{margin:0;height:100dvh;display:flex;flex-direction:column;overflow:hidden;background:var(--paper);color:var(--ink);font:14px/1.45 system-ui,sans-serif}header{background:var(--paper);display:flex;justify-content:space-between;align-items:center;padding:10px 22px;height:52px;flex-shrink:0}.brand{color:var(--sage);text-decoration:none;font:600 21px Georgia,serif}.local-note,small,.hint{font-size:11px;color:var(--muted)}nav{display:flex;gap:6px;padding:0 22px 9px;border-bottom:1px solid var(--border);flex-shrink:0}button,input,select{font:inherit}button,.upload,select{cursor:pointer}button{background:var(--card);color:var(--ink);border:1px solid var(--border);border-radius:8px;padding:9px 12px;min-height:38px}button:hover{background:#edf1e5}button:disabled{opacity:.4;cursor:default}.primary,nav [aria-current=page]{background:var(--sage);color:white;border-color:var(--sage)}.primary:hover,nav [aria-current=page]:hover{background:#53663f}nav button{border:0;background:transparent;min-width:110px}main{flex:1;min-height:0;padding:14px 22px 0}.view{height:100%;min-height:0;display:flex;flex-direction:column;gap:12px}.paint-view{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:14px}.workspace{min-height:0;min-width:0;background:var(--card);border:1px solid var(--border);border-radius:14px;overflow:hidden;display:flex;flex-direction:column}.toolbar{display:flex;align-items:center;gap:6px;padding:9px;border-bottom:1px solid var(--border);flex-shrink:0}.toolbar button,.upload{font-size:12px}.upload{position:relative;display:flex;align-items:center;min-height:38px;background:#e9eedf;border:1px solid #c4ceb6;border-radius:8px;padding:8px 10px;white-space:nowrap}.upload input{position:absolute;width:1px;height:1px;opacity:0}.upload.dragover{background:#cfddbc}.spacer{flex:1}.canvas-wrap{flex:1;min-height:0;min-width:0;display:flex;justify-content:center;align-items:center;padding:12px;background:#eeeee4;background-image:radial-gradient(#d5d8ca .7px,transparent .7px);background-size:12px 12px;overflow:hidden}canvas{display:block;background:#fff;box-shadow:0 3px 14px #303b2820;max-width:100%;max-height:100%;cursor:crosshair;touch-action:manipulation}.workspace-footer{padding:8px 12px;display:flex;justify-content:space-between;gap:12px;font-size:11px;flex-shrink:0;min-width:0}.workspace-footer>span{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}#colorDot{display:inline-block;width:11px;height:11px;border-radius:50%;margin-right:6px}.color-controls{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:16px;display:flex;flex-direction:column;gap:15px;min-width:0}.section-heading{display:flex;flex-direction:column;gap:10px}.section-heading button{align-self:start}h1,h2{margin:0;font:600 22px/1.2 Georgia,serif}.color-controls h1{font-size:20px;margin-top:4px}p{margin:4px 0 0;color:var(--muted)}.swatches{display:grid;gap:8px}.swatch{display:flex;align-items:center;gap:10px;padding:8px;text-align:left;min-width:0}.swatch-dot{display:block;width:36px;height:36px;border-radius:6px;flex-shrink:0;border:1px solid #0001}.swatch-code{font-size:12px;min-width:0}.swatch-code strong,.swatch-code small{display:block}.swatch[aria-pressed=true]{outline:2px solid var(--sage);outline-offset:0;background:#edf2e5!important}.custom-color{display:flex;align-items:center;gap:8px;font-size:12px}.custom-color input{width:30px;height:30px;padding:0;border:0;background:none}.custom-color code{font-size:10px;margin-left:auto}.tolerance{font-size:12px}.tolerance output{float:right}.tolerance input{width:100%;accent-color:var(--sage)}#status{flex-shrink:0;font-size:11px;height:30px;padding:6px 22px;margin:0;white-space:nowrap;text-overflow:ellipsis;overflow:hidden}.view-heading{display:flex;justify-content:space-between;align-items:center;gap:10px;flex-shrink:0}.view-heading p{font-size:12px}.filters{display:flex;gap:12px;align-items:end;flex-wrap:wrap;flex-shrink:0}label{display:block;font-size:12px}input:not([type=color]):not([type=range]):not([type=file]),select{display:block;padding:8px 10px;border:1px solid var(--border);border-radius:7px;background:#fffefb;color:var(--ink);min-height:37px;width:100%}.filters select{min-width:160px}.paged-content{flex:1;min-height:0}.set-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;align-content:start}.set-card{padding:15px;background:var(--card);border:1px solid var(--border);border-radius:12px;min-width:0;height:174px;display:flex;flex-direction:column;gap:12px}.card-heading{display:flex;justify-content:space-between;align-items:center;gap:8px}.card-heading h2{font:600 15px system-ui,sans-serif}.card-heading button{min-height:32px;padding:4px 9px}.card-heading button[aria-pressed=true]{background:#f5e4b6;border-color:#d3b66d}.color-row{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:7px;flex:1}.color-chip{min-width:0}.color-chip i{height:28px;display:block;border-radius:5px;border:1px solid #0001}.color-chip strong{display:block;font-size:11px;margin-top:4px}.color-chip small{display:block;font-size:10px;line-height:1.25;overflow-wrap:anywhere}.card-actions{display:flex;gap:8px}.card-actions button{font-size:12px;min-height:31px;padding:5px 10px}.pager{display:flex;justify-content:center;align-items:center;gap:14px;flex-shrink:0}.pager span{font-size:12px;color:var(--muted)}.search{max-width:420px}.marker-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;align-content:start}.marker-tile{height:88px;text-align:left;display:flex;gap:10px;align-items:center;min-width:0;padding:10px}.marker-tile i{display:block;width:40px;height:48px;border-radius:6px;flex-shrink:0;border:1px solid #0001}.marker-tile span{min-width:0}.marker-tile strong{display:block;font-size:12px}.marker-tile small{display:block;font-size:11px;line-height:1.3;overflow-wrap:anywhere}.marker-tile[aria-pressed=true]{outline:2px solid var(--sage);background:#edf2e5}.empty{padding:24px;border:1px dashed var(--border);border-radius:12px;grid-column:1/-1;color:var(--muted)}dialog{width:min(660px,calc(100vw - 24px));max-height:calc(100dvh - 24px);border:1px solid var(--border);border-radius:16px;padding:20px;color:var(--ink);background:var(--paper)}dialog::backdrop{background:#26301d77;backdrop-filter:blur(3px)}dialog form{display:flex;flex-direction:column;gap:12px}dialog .marker-grid{grid-template-columns:repeat(3,minmax(0,1fr))}dialog .marker-tile{height:68px;padding:8px}dialog .marker-tile i{width:24px;height:34px}.draft-colors{display:flex;gap:6px;min-height:40px;align-items:center;flex-wrap:wrap}.draft-colors button{font-size:11px;padding:5px 8px}.draft-colors i{display:inline-block;width:14px;height:14px;vertical-align:middle;border-radius:3px;margin-right:5px}.form-actions{display:flex;gap:10px;justify-content:space-between}.lesson{display:grid;grid-template-columns:1fr 1fr;background:var(--card);border:1px solid var(--border);border-radius:16px;overflow:auto}.lesson-art{padding:25px;display:flex;justify-content:center;align-items:center;flex-direction:column;gap:20px;background:#eff0e7}.lesson-art .sample-row{display:flex;gap:8px;width:100%;max-width:350px}.sample-row span{flex:1;min-height:115px;border-radius:15px}.lesson-body{padding:25px;display:flex;flex-direction:column;justify-content:center;gap:14px}.lesson-body h2{font-size:26px}.lesson-body p{font-size:14px}.exercise{padding:16px;border-radius:10px;background:#f4ead6}.exercise strong{display:block;margin-bottom:6px}.lesson-steps{line-height:1.6;margin:0;padding-left:20px}.sample-ball{width:160px;height:160px;border-radius:50%;background:#edc9b3;box-shadow:inset -30px -25px #b57751}.sample-blend{width:100%;max-width:320px;height:130px;border-radius:14px;background:linear-gradient(90deg,#f4c6ac,#e6baa3,#d8ae98)}.sample-glow{width:180px;height:180px;border-radius:20px;background:radial-gradient(circle at 50% 45%,#fffef1 0 8%,#f3e6be 9% 15%,#e9ca7490 25%,#7063ac 65%)}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,.upload:focus-within{outline:3px solid #91a57c;outline-offset:2px}
@media(min-width:1450px){.set-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.marker-grid{grid-template-columns:repeat(6,minmax(0,1fr))}}
@media(max-width:800px){header{padding:8px 12px;height:44px}.brand{font-size:18px}.local-note{display:none}nav{padding:0 8px 7px;gap:2px}nav button{flex:1;min-width:0;font-size:12px;padding:7px 4px;min-height:35px}main{padding:9px 9px 0}.view{gap:9px}.paint-view{grid-template-columns:1fr;grid-template-rows:minmax(0,1fr) auto;gap:8px}.color-controls{padding:10px;gap:9px}.section-heading{flex-direction:row;justify-content:space-between;align-items:center}.section-heading small{display:none}.color-controls h1{font-size:17px;margin:0}.section-heading button{font-size:12px;min-height:31px;padding:5px 10px}.swatches{grid-template-columns:repeat(5,minmax(0,1fr));gap:6px}.swatch{flex-direction:column;padding:4px 2px;gap:4px;text-align:center;border:0;min-height:65px}.swatch-dot{width:100%;height:22px;border-radius:4px}.swatch-code{font-size:10px;line-height:1.1}.swatch-code small{font-size:9px;line-height:1.15}.custom-color,.tolerance,.paint-hint{display:none}.toolbar{padding:6px;gap:4px}.toolbar button,.upload{font-size:10px;padding:7px 6px;min-height:33px}#demo{display:none}.workspace-footer{font-size:9px;padding:6px}.workspace-footer>span:first-child{max-width:35%}.canvas-wrap{padding:8px}#status{height:25px;font-size:10px;padding:5px 10px}.view-heading h1{font-size:22px}.view-heading p{font-size:11px}.view-heading button{font-size:12px}.filters{gap:6px;display:grid;grid-template-columns:1fr 1fr auto}.filters label{font-size:10px}.filters select{min-width:0;font-size:11px;padding:7px}.filters button{font-size:11px;padding:8px}.set-grid{grid-template-columns:1fr}.set-card{height:188px;padding:12px}.marker-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.marker-tile{height:83px}.hint{font-size:10px}.lesson{grid-template-columns:1fr;grid-template-rows:140px 1fr}.lesson-art{padding:14px;gap:8px}.lesson-art .sample-row{max-width:280px}.sample-row span{min-height:65px}.sample-ball{width:90px;height:90px;box-shadow:inset -18px -15px #b57751}.sample-blend{height:65px;max-width:230px}.sample-glow{width:110px;height:110px}.lesson-body{padding:18px;gap:10px;justify-content:start}.lesson-body h2{font-size:21px}.lesson-body p,.lesson-steps{font-size:12px}.exercise{padding:12px;font-size:12px}.pager{gap:8px}.pager button{font-size:11px;padding:8px}.pager span{font-size:10px}.search{font-size:11px}dialog{padding:14px}dialog form{gap:9px}dialog h2{font-size:20px}dialog .marker-grid{grid-template-columns:repeat(2,minmax(0,1fr))}dialog .marker-tile{height:62px}.form-actions button{font-size:12px}}
@media(max-height:570px){header{height:35px}nav{padding-bottom:4px}main{padding-top:6px}.color-controls{gap:5px;padding:7px}.swatch-code small{display:none}.swatch{min-height:44px}.lesson{grid-template-columns:1fr 2fr;grid-template-rows:1fr}dialog{overflow:auto}.paint-hint{display:none}}

.install-app{font-size:12px;white-space:nowrap;padding:6px 9px;min-height:32px}@media(max-width:600px){header:has(.install-app:not([hidden])) .local-note{display:none}.header-tools:has(.install-app:not([hidden])){gap:6px}}@media(max-width:450px){header:has(.install-app:not([hidden])){flex-wrap:wrap;height:auto;row-gap:6px}.header-tools:has(.install-app:not([hidden])){margin-left:auto}}
.suggestion-controls{display:flex;align-items:center;justify-content:space-between;gap:10px;background:#edf1e5;border-radius:9px;padding:8px 10px}.suggestion-controls button{flex-shrink:0;font-size:12px}

.header-tools{display:flex;align-items:center;gap:16px}.help-link{font-size:12px;color:var(--sage);text-decoration:none;padding:7px 10px;border:1px solid var(--border);border-radius:7px;white-space:nowrap}.help-link:hover{background:#edf1e5}.builder-search-row{display:flex;align-items:end;gap:10px}.builder-search-row label{flex:1;min-width:0}.builder-search-row button{font-size:12px;white-space:nowrap}#builderNotice{margin:0;padding:8px 10px;background:#e8eedf;border-radius:7px}@media(max-width:450px){.brand{font-size:16px}.help-link{font-size:11px;padding:6px 8px}.header-tools{gap:0}.builder-search-row{gap:6px}.builder-search-row button{font-size:11px;padding:8px}}
.lesson-navigation{display:flex;align-items:center;gap:10px;min-width:0}.lesson-navigation label{white-space:nowrap}.lesson-navigation select{max-width:290px;min-width:0;font-size:13px}.lesson-navigation #lessonCount{white-space:nowrap;font-size:12px;color:var(--muted)}.lesson-illustration{display:block;width:100%;max-width:360px;height:auto;max-height:65%;object-fit:contain}@media(max-width:800px){#learn>.view-heading{align-items:start;flex-wrap:wrap;gap:7px}.lesson-navigation{width:100%;gap:7px}.lesson-navigation select{flex:1;max-width:none;font-size:12px;padding:5px 8px;min-height:32px}.lesson-navigation label{font-size:11px}.lesson-illustration{max-height:92px;width:auto;max-width:100%}.lesson-art .hint{font-size:9px;line-height:1.3;text-align:center}.lesson-art{gap:5px;padding:10px}.lesson-body{gap:8px}}@media(max-height:570px) and (min-width:801px){.lesson-body{padding:15px;gap:8px}.lesson-body p,.lesson-steps{font-size:12px}.exercise{padding:10px;font-size:12px}}

/* iOS PWA: opaque header color sample; see ../IOS-PWA-BLUR.md. */
html{background:var(--paper)}
.ios-status-color{display:none}
@media (display-mode:standalone){
  /* Keep content inside the device safe area when viewport-fit=cover is used. */
  body{padding:0 env(safe-area-inset-right,0px) env(safe-area-inset-bottom,0px) env(safe-area-inset-left,0px)}
  .ios-status-color{display:block;position:fixed;top:0;left:0;width:100%;height:1px;background-color:var(--paper);z-index:2147483647;pointer-events:none}
}

/* Let compact screens scroll their content instead of clipping controls. */
.color-controls{min-height:0;overflow:auto}
.reload-app{font-size:22px;line-height:1;padding:4px 8px;min-width:34px;min-height:32px}
.pull-refresh{position:fixed;top:calc(env(safe-area-inset-top,0px) + 6px);left:50%;transform:translateX(-50%);z-index:1000;max-width:calc(100% - 24px);padding:10px 16px;border:1px solid var(--border);border-radius:20px;background:var(--paper);color:var(--ink);box-shadow:0 3px 12px #303b2820;font-size:12px;text-align:center;pointer-events:none}
html{overscroll-behavior-y:none}
@media(max-width:800px){
  header{height:auto;min-height:44px;flex-wrap:wrap;gap:6px}
  .header-tools{margin-left:auto;gap:6px;flex-wrap:wrap}
  .view:not(.paint-view){overflow:auto;overscroll-behavior-y:contain;padding-bottom:4px}
  .set-grid{min-height:188px;flex-shrink:0}
  .set-card{height:auto;min-height:188px}
  .marker-grid{min-height:88px;flex-shrink:0}
  .lesson{min-height:340px;grid-template-columns:1fr;grid-template-rows:140px auto;overflow:visible;flex-shrink:0}
  .lesson-body{min-width:0}
  .paint-view{overflow:auto;overscroll-behavior-y:contain;grid-template-rows:minmax(160px,1fr) auto}
  .color-controls{overflow:visible}
  .section-heading{flex-wrap:wrap}
  .section-heading h1{overflow-wrap:anywhere}
  .card-actions,.pager{flex-wrap:wrap}
  #learn>.pager>span{display:none}
  .view-heading{flex-wrap:wrap}
  .toolbar{flex-wrap:wrap}
  dialog{max-height:calc(100dvh - env(safe-area-inset-top,0px) - env(safe-area-inset-bottom,0px) - 24px);overflow:auto}
}
@media(max-width:380px){.filters{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}.filters>button{grid-column:1/-1}.brand{font-size:16px}}
@media(max-height:570px) and (min-width:801px){
  .paint-view{grid-template-columns:minmax(0,1fr) 240px}
  .color-controls{padding:10px;gap:8px}
  .section-heading{flex-direction:row;align-items:center;gap:6px}
  .section-heading small,.custom-color,.tolerance{display:none}
  .color-controls h1{font-size:17px;margin:0}
  .section-heading button{font-size:11px;padding:5px;min-height:32px}
  .swatches{grid-template-columns:repeat(2,minmax(0,1fr));gap:6px}
  .swatch{padding:5px;gap:6px;min-height:40px}
  .swatch-dot{width:24px;height:24px}
  .swatch-code{font-size:10px}
}

@media(max-height:570px) and (min-width:801px){
  .view:not(.paint-view){overflow:auto;overscroll-behavior-y:contain;padding-bottom:4px}
  .set-grid{min-height:174px;flex-shrink:0}
  .marker-grid{min-height:88px;flex-shrink:0}
  .lesson{min-height:240px;flex-shrink:0}
}

/* Match Viskaart's standalone document flow and sticky, safe-area-aware header.
   Reference: viskaart/web-applicatie e768ff1, resources/css/app.css. */
@media (display-mode:standalone){
  body{display:block;height:auto;min-height:calc(100dvh + 1px);overflow:visible}
  body>header{position:sticky;top:0;z-index:700;height:auto;min-height:52px;padding-top:calc(10px + env(safe-area-inset-top,0px));background:var(--paper)}
  body>nav{position:sticky;top:var(--app-header-height,52px);z-index:600;background:var(--paper)}
  body>header::before{content:"";position:fixed;inset:0 0 auto;height:env(safe-area-inset-top,0px);background:var(--paper);pointer-events:none}
  body>main{height:calc(100dvh - var(--app-header-height,52px) - var(--app-nav-height,48px) - 30px - env(safe-area-inset-bottom,0px));min-height:220px}
}
@media (display-mode:standalone) and (max-width:800px){
  body>header{min-height:44px;padding-top:calc(8px + env(safe-area-inset-top,0px))}
  body>main{height:calc(100dvh - var(--app-header-height,44px) - var(--app-nav-height,43px) - 25px - env(safe-area-inset-bottom,0px))}
}
.storage-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}#storageDetails p{white-space:normal}#storageButton{background:var(--card);font-size:11px}

/* Keep the header to one row; account actions live in a bounded menu. */
body>header:has(.header-menu){position:relative;height:auto;min-height:60px;flex-wrap:nowrap;gap:8px}
body>header .brand{white-space:nowrap;min-width:0}
.header-menu{flex:0 0 auto}
.header-menu>summary{display:flex;align-items:center;justify-content:center;gap:7px;min-height:44px;min-width:84px;padding:8px 10px;border:1px solid var(--border);border-radius:8px;background:var(--card);color:var(--ink);cursor:pointer;list-style:none;font-size:13px}
.header-menu>summary::-webkit-details-marker{display:none}
.header-menu>summary:focus-visible{outline:3px solid #91a57c;outline-offset:2px}
.header-menu[open]>summary{background:#edf1e5}
.header-menu:not([open])>.header-tools{display:none}
.header-menu>.header-tools{position:absolute;top:100%;right:12px;z-index:900;width:min(280px,calc(100vw - 24px));max-height:calc(100dvh - var(--app-header-height,60px) - env(safe-area-inset-bottom,0px) - 12px);overflow:auto;display:flex;flex-direction:column;align-items:stretch;gap:6px;margin:0;padding:10px;background:var(--card);border:1px solid var(--border);border-radius:10px;box-shadow:0 6px 20px #303b2826}
.header-menu .header-tools :is(button,a){display:flex;align-items:center;justify-content:flex-start;width:100%;min-height:44px;font-size:14px;text-align:left;padding:10px 12px}
.header-menu .reload-app::after{content:"Herladen";font-size:14px;margin-left:10px}
.menu-storage-state{width:16px;height:16px;border-radius:50%;background:#865510;color:white;font-size:11px;text-align:center;line-height:16px}
body>nav[aria-label="Atelier"]{display:grid;grid-template-columns:repeat(4,minmax(0,1fr))}
body>nav[aria-label="Atelier"] button{min-width:0;min-height:44px;white-space:nowrap}
@media(max-width:800px){
 body>header:has(.header-menu){padding-bottom:8px;min-height:60px}
 body>header .brand{font-size:16px}
 body>nav[aria-label="Atelier"]{padding-inline:8px;gap:2px}
 body>nav[aria-label="Atelier"] button{font-size:12px;padding-inline:3px}
}
@media(display-mode:standalone){body>header:has(.header-menu){position:sticky;top:0;z-index:700}}