/* Rozvržení: laboratorní sešit na milimetrovém papíře – text v úzkém sloupci, grafy jako širší „přístroje“, čísla strojovým písmem. */
:root {
  color-scheme: light;
  --page: #eef1f7;
  --surface: #ffffff;
  --text: #0c1430;
  --text-2: #475170;
  --muted: #7a84a0;
  --grid: #e0e5f0;
  --line: #c2cadc;
  --dots: #cfd6e6;
  --s1: #2a78d6;
  --s2: #eb6834;
  --s3: #1baf7a;
  --task: #e4eefc;
  --psych: #fdeee4;
  --ok: #17703c;
  --no: #ad2f2c;
  --shadow: 0 1px 2px rgb(12 20 48 / 0.05), 0 12px 32px -12px rgb(12 20 48 / 0.16);
  --display: "Bricolage Grotesque", "Segoe UI", system-ui, sans-serif;
  --body: "Instrument Sans", "Segoe UI", system-ui, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, Consolas, monospace;
}
@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --page: #090d19;
    --surface: #111728;
    --text: #edf0f8;
    --text-2: #b3bcd3;
    --muted: #8691ad;
    --grid: #1f2840;
    --line: #37425f;
    --dots: #1a2238;
    --s1: #3987e5;
    --s2: #d95926;
    --s3: #199e70;
    --task: #13203a;
    --psych: #2a1b13;
    --ok: #6fcf97;
    --no: #f08a86;
    --shadow: 0 1px 2px rgb(0 0 0 / 0.4), 0 16px 40px -16px rgb(0 0 0 / 0.7);
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0; color: var(--text); font: 17px/1.65 var(--body);
  background: var(--page) radial-gradient(var(--dots) 1px, transparent 1.4px) 0 0 / 22px 22px;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--s1); }
:focus-visible { outline: 2px solid var(--s1); outline-offset: 2px; }
main { padding: 0 max(18px, env(safe-area-inset-right, 0px)) 90px max(18px, env(safe-area-inset-left, 0px)); }
.view { animation: rise 0.45s cubic-bezier(0.2, 0.7, 0.2, 1); }
@keyframes rise { from { opacity: 0.4; transform: translateY(10px); } }
@media (prefers-reduced-motion: reduce) { .view { animation: none; } html { scroll-behavior: auto; } }

/* horní lišta */
.bar {
  position: sticky; top: 0; z-index: 5; margin: 0 -18px 0; padding: 10px 18px;
  display: flex; align-items: center; gap: 16px; justify-content: space-between;
  background: color-mix(in srgb, var(--page) 78%, transparent); backdrop-filter: blur(14px) saturate(1.4);
  border-bottom: 1px solid var(--grid);
}
.brand { display: inline-flex; align-items: center; gap: 9px; text-decoration: none; color: var(--text); font: 700 16px/1 var(--display); letter-spacing: -0.01em; white-space: nowrap; }
.brand svg { width: 30px; height: 20px; color: var(--s2); }
.steps { display: flex; gap: 5px; align-items: center; flex-wrap: wrap; justify-content: flex-end; }
.steps a { width: 22px; height: 22px; border-radius: 50%; display: grid; place-items: center; text-decoration: none; font: 500 11px/1 var(--mono); color: var(--text-2); border: 1.5px solid var(--line); background: var(--surface); }
.steps a:hover { border-color: var(--s1); }
.steps a.done { background: var(--s1); border-color: var(--s1); color: #fff; }
.steps a.now { border-color: var(--text); color: var(--text); box-shadow: 0 0 0 3px color-mix(in srgb, var(--s1) 25%, transparent); }
.steps a.done.now { color: #fff; }
.meter { display: flex; align-items: center; gap: 10px; font: 500 13px/1 var(--mono); color: var(--text-2); }
.meter i { width: 120px; height: 6px; border-radius: 3px; background: var(--grid); overflow: hidden; display: block; }
@media (max-width: 520px) { .meter i { display: none; } }
@media (max-width: 520px) { .steps { flex: 1; min-width: 0; max-width: 190px; flex-wrap: nowrap; gap: 3px; } .steps a { flex: 1; min-width: 3px; width: auto; height: 7px; border-radius: 4px; font-size: 0; } .steps a.now { box-shadow: 0 0 0 2px var(--text); } }
.meter b { display: block; height: 100%; background: var(--s1); border-radius: 3px; }

/* typografie */
h1, h2, h3 { font-family: var(--display); text-wrap: balance; }
h1 { font-size: clamp(34px, 6vw, 56px); line-height: 1.02; margin: 0 0 16px; letter-spacing: -0.022em; font-weight: 800; }
h2 { font-size: 27px; line-height: 1.15; margin: 44px 0 12px; letter-spacing: -0.02em; font-weight: 700; }
h3 { font-size: 19px; margin: 30px 0 6px; letter-spacing: -0.01em; font-weight: 700; }
.kicker { font: 500 12.5px/1.3 var(--mono); color: var(--s1); text-transform: uppercase; letter-spacing: 0.12em; margin: 0 0 14px; }
.lead { font-size: 21px; line-height: 1.5; color: var(--text-2); margin: 0 0 26px; text-wrap: pretty; }
.prose p { margin: 0 0 15px; }
.prose ul { margin: 0 0 15px; padding-left: 22px; }
.prose li { margin-bottom: 7px; }
.prose li::marker { color: var(--s1); }
.prose small { color: var(--text-2); }

/* úvodní stránka */
.home { max-width: 1120px; margin: 0 auto; }
.hero { display: grid; grid-template-columns: minmax(0, 1fr); gap: 28px; align-items: center; padding: 44px 0 20px; }
@media (min-width: 900px) { .hero { grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr); gap: 48px; padding-top: 64px; } }
.hero h1 { font-size: clamp(46px, 9vw, 96px); line-height: 0.94; letter-spacing: -0.03em; margin-bottom: 30px; }
.hero h1 span { position: relative; display: inline-block; }
.hero h1 svg { position: absolute; left: -2%; bottom: -0.2em; width: 104%; height: 0.36em; color: var(--s2); overflow: visible; }
.hero .lead { max-width: 30em; }
.cta { display: flex; flex-wrap: wrap; align-items: center; gap: 14px 20px; }
.cta small { font: 500 12.5px/1.4 var(--mono); color: var(--muted); }
.go {
  display: inline-flex; align-items: center; gap: 10px; text-decoration: none; font: 700 17px/1 var(--display);
  background: var(--text); color: var(--page); padding: 16px 24px; border-radius: 999px; transition: transform 0.15s, box-shadow 0.15s;
}
.go:hover { transform: translateY(-2px); box-shadow: 0 10px 24px -10px var(--text); }
.go::after { content: "→"; font-family: var(--body); }
.hero figure { margin: 0; min-width: 0; }
.hero figcaption { font-size: 14px; line-height: 1.5; color: var(--text-2); margin: 6px 4px 0; }
.hero .stage-count { display: none; }

.how { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 0; margin: 40px 0 10px; border-top: 1px solid var(--line); }
.how div { padding: 20px 22px 6px 0; }
.how b { display: block; font: 700 19px/1.2 var(--display); margin-bottom: 6px; }
.how i { font: 500 12.5px/1 var(--mono); color: var(--s1); font-style: normal; display: block; margin-bottom: 10px; letter-spacing: 0.1em; }
.how p { margin: 0 0 12px; color: var(--text-2); font-size: 15.5px; line-height: 1.55; }

.part { display: grid; grid-template-columns: minmax(0, 1fr); gap: 6px 40px; margin-top: 56px; }
@media (min-width: 900px) { .part { grid-template-columns: 300px minmax(0, 1fr); } .part-h { position: sticky; top: 70px; align-self: start; } }
.part-h .num { font: 500 12.5px/1 var(--mono); letter-spacing: 0.12em; text-transform: uppercase; color: var(--s1); padding-top: 18px; border-top: 2px solid var(--text); display: inline-block; }
.part-h h2 { margin: 8px 0 8px; font-size: 26px; }
.part-h p { margin: 0 0 14px; color: var(--text-2); font-size: 15.5px; line-height: 1.55; }
.rows { display: grid; gap: 8px; }
.lrow {
  display: grid; grid-template-columns: 64px minmax(0, 1fr) auto; gap: 16px; align-items: center;
  padding: 14px 18px; border-radius: 16px; text-decoration: none; color: var(--text);
  background: var(--surface); border: 1px solid var(--grid); transition: transform 0.15s, box-shadow 0.15s, border-color 0.15s;
}
a.lrow:hover { transform: translateX(4px); border-color: var(--s1); box-shadow: var(--shadow); }
.lrow .glyph { width: 64px; height: 40px; color: var(--s1); }
.lrow .n { font: 500 12px/1 var(--mono); color: var(--muted); letter-spacing: 0.08em; text-transform: uppercase; }
.lrow .t { font: 700 18.5px/1.25 var(--display); margin: 5px 0 3px; letter-spacing: -0.01em; }
.lrow .d { font-size: 14.5px; line-height: 1.45; color: var(--text-2); }
.lrow .st { font: 500 12px/1 var(--mono); padding: 6px 10px; border-radius: 999px; white-space: nowrap; color: var(--text-2); border: 1px solid var(--line); }
.lrow .st.done { background: var(--s1); border-color: var(--s1); color: #fff; }
.lrow.soon { background: transparent; border-style: dashed; border-color: var(--line); grid-template-columns: minmax(0, 1fr) auto; }
.lrow.soon .t { color: var(--text-2); font-size: 16.5px; margin-top: 0; }
@media (max-width: 520px) { .lrow { grid-template-columns: 48px minmax(0, 1fr); } .lrow .glyph { width: 48px; } .lrow .st { grid-column: 2; justify-self: start; } .lrow.soon { grid-template-columns: minmax(0, 1fr); } .lrow.soon .st { grid-column: 1; } }

/* lekce: text v úzkém sloupci, přístroje širší */
.lesson { padding-top: 48px; }
.lesson > *, article > * { max-width: 720px; margin-inline: auto; }
.lesson > header { margin-bottom: 8px; }
.lesson > article { max-width: 940px; }
article > .chart, article > .stage3d, article > .tiles, article > .tablewrap { max-width: 940px; }
article > .controls, article > .legend, article > .stage-count, article > .verdict { max-width: 900px; }

.chart { background: var(--surface); border: 1px solid var(--grid); border-radius: 20px; padding: 12px; margin-block: 22px 12px; box-shadow: var(--shadow); }
.chart svg { display: block; width: 100%; height: auto; overflow: hidden; user-select: none; }
svg text { font: 12px var(--body); fill: var(--text-2); }
svg .axis line { stroke: var(--line); }
svg .axis-label { fill: var(--text-2); font-size: 13px; }
svg .grid { stroke: var(--grid); }
svg .lbl { fill: var(--text); font-size: 13px; font-weight: 600; }
svg .pt { fill: var(--s1); stroke: var(--surface); stroke-width: 2; cursor: grab; touch-action: none; outline: none; transition: r 0.12s; }
svg .pt:hover { stroke: var(--s1); stroke-opacity: 0.35; stroke-width: 6; }
svg .pt:focus-visible, svg .pt.drag { stroke: var(--text); stroke-opacity: 1; stroke-width: 2; }
svg .pt.drag { cursor: grabbing; }
svg.scrub { cursor: ew-resize; touch-action: pan-y; }
svg .f1 { fill: var(--s1); } svg .f2 { fill: var(--s2); } svg .f3 { fill: var(--s3); }
svg .l1, svg .l2, svg .l3, svg .ln { fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
svg .l1 { stroke: var(--s1); } svg .l2 { stroke: var(--s2); } svg .l3 { stroke: var(--s3); } svg .ln { stroke: var(--text-2); stroke-width: 1.5; }
svg .a1 { fill: var(--s1); fill-opacity: 0.16; } svg .a2 { fill: var(--s2); fill-opacity: 0.35; }
svg .sq { fill: var(--s1); fill-opacity: 0.1; stroke: var(--s1); stroke-opacity: 0.55; }
svg .dash { stroke-dasharray: 5 4; }
svg .bar { fill: var(--s1); }
svg .bar:hover { fill-opacity: 0.75; }
svg .box { fill: var(--s1); fill-opacity: 0.16; stroke: var(--s1); stroke-width: 2; }
svg .ring { fill: var(--surface); stroke: var(--s2); stroke-width: 2; }
svg .l3w { stroke: var(--s3); stroke-width: 4; stroke-linecap: round; }

.legend { display: flex; flex-wrap: wrap; gap: 6px 18px; font-size: 13.5px; color: var(--text-2); margin-block: 0 14px; padding-inline: 6px; }
.legend span { display: inline-flex; align-items: center; gap: 7px; }
.sw { width: 14px; height: 4px; border-radius: 2px; display: inline-block; }
.sw.c1 { background: var(--s1); } .sw.c2 { background: var(--s2); } .sw.c3 { background: var(--s3); }
.sw.dot { width: 10px; height: 10px; border-radius: 50%; }
.sw.area { height: 10px; opacity: 0.45; }

.tip { position: fixed; display: none; z-index: 10; pointer-events: none; background: var(--text); color: var(--page); font: 500 12.5px/1.3 var(--mono); padding: 6px 10px; border-radius: 8px; }

/* odečet hodnot: jeden pás s dělicími čarami místo samostatných karet */
.tiles { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 1px; margin-block: 12px 16px; background: var(--grid); border: 1px solid var(--grid); border-radius: 16px; overflow: hidden; }
.tile { background: var(--surface); padding: 14px 16px; display: flex; flex-direction: column; justify-content: space-between; gap: 6px; }
.tile-l { font-size: 12.5px; color: var(--text-2); line-height: 1.3; }
.tile.wide { grid-column: 1 / -1; }
@media (max-width: 480px) { .tiles > .tile:last-child:nth-child(odd), .tile.wide ~ .tile:last-child:nth-child(even) { grid-column: 1 / -1; } }
.tile-v { font: 500 25px/1.1 var(--mono); letter-spacing: -0.03em; font-variant-numeric: tabular-nums; }

.controls { display: flex; flex-wrap: wrap; gap: 10px 14px; align-items: center; margin-block: 12px; }
.btn { font: 500 15px/1.3 var(--body); padding: 9px 16px; border-radius: 999px; cursor: pointer; background: var(--surface); color: var(--text); border: 1px solid var(--line); transition: border-color 0.15s, transform 0.1s; }
.btn:hover { border-color: var(--s1); }
.btn:active { transform: scale(0.97); }
.btn[aria-pressed="true"] { background: var(--text); color: var(--page); border-color: var(--text); }
.seg { display: inline-flex; flex-wrap: wrap; gap: 4px; }
.ctl { display: flex; flex-direction: column; gap: 4px; flex: 1 1 240px; font-size: 15px; }
.ctl-l { color: var(--text-2); }
.ctl output { color: var(--text); font: 500 15px var(--mono); }
.ctl input { width: 100%; accent-color: var(--s1); height: 22px; }
.chk { font-size: 15px; display: inline-flex; align-items: center; gap: 6px; }
.chk input { accent-color: var(--s1); width: 18px; height: 18px; }

.verdict { background: var(--surface); border: 1px solid var(--grid); border-radius: 16px; padding: 14px 18px; margin-block: 12px 18px; }

.box { border-radius: 20px; padding: 20px 24px 8px; margin-block: 26px; }
.box-task { background: var(--task); }
.box-psych { background: var(--psych); }
.box-t { font: 500 12.5px/1 var(--mono); text-transform: uppercase; letter-spacing: 0.12em; margin-bottom: 12px; }
.box-task .box-t { color: var(--s1); }
.box-psych .box-t { color: var(--s2); }
.formula { font-family: Cambria, "Times New Roman", serif; font-size: 23px; text-align: center; padding: 22px 12px; margin-block: 20px; border-block: 1px solid var(--line); }
.formula small { display: block; font: 13px var(--body); color: var(--text-2); margin-top: 8px; }

/* 3D */
.stage3d { position: relative; width: 100%; background: radial-gradient(120% 90% at 50% 0%, var(--surface), color-mix(in srgb, var(--task) 60%, var(--surface))); border: 1px solid var(--grid); border-radius: 24px; overflow: hidden; margin-block: 22px 10px; box-shadow: var(--shadow); }
.stage3d canvas { display: block; width: 100%; height: 100%; cursor: grab; }
.stage3d canvas:active { cursor: grabbing; }
.stage-hint { position: absolute; left: 14px; bottom: 10px; font: 500 12px var(--mono); color: var(--muted); pointer-events: none; }
.stage-count { font: 500 13px var(--mono); color: var(--text-2); margin-block: 0 12px; padding-inline: 6px; }

.tablewrap { max-height: 330px; overflow: auto; border: 1px solid var(--grid); border-radius: 16px; background: var(--surface); margin-block: 12px 18px; }
table.freq { border-collapse: collapse; width: 100%; font: 14px var(--mono); font-variant-numeric: tabular-nums; }
table.freq th, table.freq td { padding: 8px 14px; text-align: right; border-bottom: 1px solid var(--grid); }
table.freq th { position: sticky; top: 0; background: var(--surface); color: var(--text-2); font: 600 12.5px var(--body); }
table.freq th:first-child, table.freq td:first-child { text-align: left; }
table.freq tr.top td { font-weight: 700; color: var(--s1); }

/* kvíz */
.quiz { margin-top: 56px; padding-top: 4px; border-top: 1px solid var(--line); }
.q { margin: 26px 0; }
.q-t { font: 700 18px/1.35 var(--display); margin-bottom: 12px; }
.q-o { display: grid; gap: 8px; }
.q-o .btn { text-align: left; border-radius: 14px; padding: 12px 16px; }
.q-o .btn.right { border-color: var(--ok); box-shadow: inset 0 0 0 1px var(--ok); }
.q-o .btn.wrong { border-style: dashed; border-color: var(--no); color: var(--text-2); }
.q-fb { margin-top: 10px; font-size: 15.5px; }
.q-fb b.ok { color: var(--ok); } .q-fb b.no { color: var(--no); }
.done-note { font: 700 18px var(--display); margin-top: 20px; color: var(--ok); }

.nav { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 48px; }
.nav a { text-decoration: none; padding: 16px 18px; border: 1px solid var(--line); border-radius: 16px; background: var(--surface); color: var(--text); font: 700 16.5px/1.25 var(--display); transition: border-color 0.15s, box-shadow 0.15s; min-width: 0; }
.nav a:last-child { text-align: right; }
.nav a:hover { border-color: var(--s1); box-shadow: var(--shadow); }
.nav small { display: block; font: 500 12px var(--mono); color: var(--muted); margin-bottom: 6px; text-transform: uppercase; letter-spacing: 0.08em; }
footer { margin-top: 70px; padding-top: 18px; border-top: 1px solid var(--line); font-size: 13.5px; color: var(--muted); }
table.freq.words th, table.freq.words td { text-align: left; font-family: var(--body); vertical-align: top; }
.btn[hidden] { display: none; }

/* sbalene boxy ke zkousce, pocetni ulohy, tahak */
details.fold, .exam-box { border: 1px solid var(--line); border-radius: 20px; background: var(--surface); margin-block: 14px; }
.lesson > article + details.fold { margin-top: 44px; }
details.fold > summary { cursor: pointer; list-style: none; padding: 16px 22px; display: flex; justify-content: space-between; align-items: center; gap: 14px; font: 700 18.5px/1.25 var(--display); border-radius: 20px; }
details.fold > summary::-webkit-details-marker { display: none; }
details.fold > summary::after { content: "+"; font: 500 22px/1 var(--mono); color: var(--s1); }
details.fold[open] > summary::after { content: "\2212"; }
details.fold > summary:hover { color: var(--s1); }
details.fold > summary small { display: block; font: 500 12px/1.3 var(--mono); color: var(--muted); letter-spacing: 0.06em; text-transform: uppercase; margin-top: 5px; }
.fold-b { padding: 0 22px 16px; }
.exam-box .fold-b { padding-top: 20px; }
.fx { padding: 14px 0 12px; border-top: 1px solid var(--grid); }
.fx-n { font: 500 12.5px/1.3 var(--mono); text-transform: uppercase; letter-spacing: 0.1em; color: var(--s1); }
.fx-f { font: 21px/1.45 Cambria, "Times New Roman", serif; margin: 8px 0 6px; overflow-x: auto; }
.fx-f sub, .fx-f sup, .fx-s sub, .fx-s sup { font-size: 0.7em; line-height: 0; }
.fx-s { list-style: none; margin: 0; padding: 0; font-size: 14.5px; line-height: 1.5; color: var(--text-2); }
.fx-s b { font: 16px Cambria, "Times New Roman", serif; color: var(--text); margin-right: 6px; }
.fx-ex { padding-top: 14px; border-top: 1px solid var(--grid); }
.fx-ex .prose { font-size: 16px; }
.fx .tablewrap, .fx table.freq { margin-block: 8px 0; }
.drill-q { font-size: 17px; line-height: 1.55; margin-bottom: 14px; }
.drill-q .tablewrap { margin-top: 0; }
.drill-in { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; }
.drill-in small { flex-basis: 100%; font-size: 13.5px; color: var(--muted); }
.drill-inp { font: 500 19px var(--mono); width: 150px; padding: 9px 14px; border-radius: 14px; border: 1px solid var(--line); background: var(--page); color: var(--text); }
.drill-inp:focus { outline: 2px solid var(--s1); outline-offset: 1px; }
.drill-inp.right { border-color: var(--ok); box-shadow: inset 0 0 0 1px var(--ok); }
.drill-inp.wrong { border-style: dashed; border-color: var(--no); }
.drill-u { font: 500 17px var(--mono); color: var(--text-2); }
.drill .btn:disabled { cursor: default; opacity: 0.75; }
.drill-steps { margin: 12px 0 4px; padding: 14px 18px 14px 40px; background: var(--task); border-radius: 14px; font-size: 15.5px; line-height: 1.6; }
.drill-steps[hidden] { display: none; }
.drill-steps li + li { margin-top: 4px; }
.drill .controls { margin-top: 12px; }
.drill-from { font-size: 14.5px; color: var(--text-2); min-height: 1.5em; }
.exam-dots { display: flex; gap: 6px; margin-block: 4px 16px; }
.exam-dots i { flex: 1 1 0; height: 6px; border-radius: 3px; background: var(--grid); }
.exam-dots i.now { background: var(--text); }
.exam-dots i.ok { background: var(--ok); }
.exam-dots i.no { background: var(--no); }
a.btn { text-decoration: none; display: inline-block; }
.sheet > * { max-width: 940px; }
.sheet-s { margin-top: 34px; }
.sheet-s h2 { font-size: 22px; margin: 0 0 4px; }
.sheet-s h2 a { color: inherit; text-decoration: none; }
.sheet-s h2 a:hover { color: var(--s1); }
.sheet-g { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 0 32px; }
@media print {
  :root { --page: #fff; --surface: #fff; --text: #000; --text-2: #222; --muted: #444; --grid: #bbb; --line: #888; --s1: #000; --task: #fff; }
  body { background: #fff; }
  .bar, .nav, .noprint, footer { display: none; }
  .view { animation: none; }
  .lesson { padding-top: 0; }
  h1 { font-size: 28px; margin-bottom: 6px; }
  .lead { font-size: 13px; margin-bottom: 8px; }
  .sheet-s { margin-top: 14px; break-inside: avoid; }
  .sheet-s h2 { font-size: 15px; }
  .sheet-g { grid-template-columns: 1fr 1fr; gap: 0 24px; }
  .fx { padding: 6px 0; break-inside: avoid; }
  .fx-f { font-size: 15px; margin: 3px 0; }
  .fx-n { font-size: 9.5px; }
  .fx-s { font-size: 11px; }
  .fx-s b { font-size: 12px; }
  .sheet table.freq { font-size: 11px; }
  .sheet table.freq th, .sheet table.freq td { padding: 2px 8px; }
}

/* psychologicke pripady */
.case .q-t:focus { outline: none; }
.case .q-t { margin-top: 18px; }
.case > .q-t:first-child { margin-top: 0; }
.case label { display: block; font-size: 15.5px; color: var(--text-2); }
.case-ta { display: block; width: 100%; font: inherit; padding: 12px 14px; margin: 10px 0 12px; border-radius: 14px; border: 1px solid var(--line); background: var(--page); color: var(--text); resize: vertical; }
.case-ta:focus { outline: 2px solid var(--s1); outline-offset: 1px; }
.case-out { font: 500 16px/1.55 var(--mono); background: var(--task); border-radius: 14px; padding: 12px 16px; margin: 0 0 14px; }
.case-mine { margin: 0 0 6px; padding: 10px 16px; border-left: 3px solid var(--s1); background: var(--page); border-radius: 0 12px 12px 0; font-size: 16px; white-space: pre-wrap; }
.case-mine small { display: block; font: 500 12px var(--mono); text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted); margin-bottom: 4px; }
.case-note { font-size: 15px; color: var(--text-2); margin: 0 0 12px; }
.case .btn:disabled { cursor: default; }
.case .q-o .btn:disabled:not(.right):not(.wrong) { opacity: 0.6; }
.case .controls { margin-top: 10px; }

/* karticky k tisku */
.kc-out { margin-top: 18px; }
.kc-row, .kc-page { display: grid; grid-template-columns: 1fr 1fr; background: var(--surface); }
.kc-row { border: 1px solid var(--line); border-bottom: 0; }
.kc-row:last-child { border-bottom: 1px solid var(--line); }
.kc-row .kc-a { border-right: 1px dashed var(--line); }
.kc-page { border-top: 1px solid var(--line); border-left: 1px solid var(--line); margin-bottom: 8px; }
.kc-page .kc { border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.kc { height: 66mm; padding: 5mm 6mm; overflow: hidden; display: flex; flex-direction: column; min-width: 0; }
.kc-t { font: 500 7.5pt/1.2 var(--mono); text-transform: uppercase; letter-spacing: 0.08em; color: var(--s1); margin-bottom: 2mm; }
.kc-b .kc-t { color: var(--muted); }
.kc-body { flex: 1; display: flex; flex-direction: column; justify-content: center; min-height: 0; font-size: 10.5pt; line-height: 1.4; }
.kc-body p { margin: 0 0 1.5mm; }
.kc-q { font: 700 15pt/1.2 var(--display); text-wrap: balance; }
.kc-a .kc-m + .kc-o + .kc-q, .kc-body > div + .kc-q { font-size: 11.5pt; line-height: 1.3; }
.kc-h { font-size: 9pt; color: var(--text-2); margin-top: 2mm; }
.kc-m { font-size: 8.5pt; line-height: 1.35; color: var(--text-2); }
.kc-o { font: 500 8.5pt/1.35 var(--mono); }
.kc-f { font: 14pt/1.4 Cambria, "Times New Roman", serif; margin-bottom: 2mm; }
.kc-f sub, .kc-f sup, .kc-s sub, .kc-s sup { font-size: 0.7em; line-height: 0; }
.kc-s { list-style: none; margin: 0; padding: 0; font-size: 8.5pt; line-height: 1.4; color: var(--text-2); }
.kc-s b { font: 10pt Cambria, "Times New Roman", serif; color: var(--text); margin-right: 1.5mm; }
.kc-label { font: 500 12px var(--mono); color: var(--muted); text-transform: uppercase; letter-spacing: 0.08em; margin: 14px 0 6px; }
@media print {
  @page { size: A4; margin: 12mm; }
  .cardsheet > * { max-width: none; }
  main:has(.cardsheet) { padding-bottom: 0; }
  .cardsheet .kc-out { margin: 0; }
  .kc-row { break-inside: avoid; border-bottom: 1px solid var(--line); margin-bottom: -1px; }
  .kc-page { break-after: page; break-inside: avoid; margin: 0; }
  .kc-page:last-child { break-after: auto; }
}