/* הדפסה ראשונה — "משטח הדפסה": דיו כהה על נייר חם, ירוק מרווה, קווים קשים. ניגודיות נוחה לעין בשני המצבים. */
:root {
  --bg: #f3f0e7; --surface: #fbf9f3; --ink: #252820; --muted: #64685c; --edge: #2f3329; --soft: #ddd9cb; --grid: rgba(37,40,32,.04);
  --lime: #a9d18e; --on-lime: #1c2117; --link: #252820; --sh: #3b4033; color-scheme: light;
  --display: Rubik, Heebo, system-ui, sans-serif; --mono: "JetBrains Mono", ui-monospace, Consolas, monospace;
}
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) {
  --bg: #151813; --surface: #1c201a; --ink: #e5e2d7; --muted: #a1a595; --edge: #414739; --soft: #2b3027; --grid: rgba(229,226,215,.035);
  --lime: #a9d18e; --link: #bfe0a8; --sh: #0c0e0a; color-scheme: dark; } }
:root[data-theme="dark"] {
  --bg: #151813; --surface: #1c201a; --ink: #e5e2d7; --muted: #a1a595; --edge: #414739; --soft: #2b3027; --grid: rgba(229,226,215,.035);
  --lime: #a9d18e; --link: #bfe0a8; --sh: #0c0e0a; color-scheme: dark; }

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 90px; }
body { margin: 0; color: var(--ink); font: 17px/1.65 Heebo, system-ui, sans-serif; -webkit-font-smoothing: antialiased; background-color: var(--bg);
  background-image: linear-gradient(var(--grid) 1px, transparent 1px), linear-gradient(90deg, var(--grid) 1px, transparent 1px); background-size: 32px 32px; }
main, footer { max-width: 860px; margin: 0 auto; padding: 0 20px; }
a { color: var(--link); text-decoration-color: var(--lime); text-decoration-thickness: 3px; text-underline-offset: 4px; font-weight: 500; }
a:hover { background: var(--lime); color: var(--on-lime); text-decoration-color: var(--on-lime); }
:focus-visible { outline: 3px solid var(--lime); outline-offset: 2px; box-shadow: 0 0 0 5px var(--ink); }
::selection { background: var(--lime); color: var(--on-lime); }

/* header */
header { position: sticky; top: 0; z-index: 20; display: flex; justify-content: space-between; align-items: center; gap: 12px;
  padding: 12px max(20px, calc((100vw - 860px) / 2 + 20px)); background: var(--bg); border-bottom: 2px solid var(--edge); }
a.logo { font: 900 1.35rem/1 var(--display); color: var(--ink); text-decoration: none; letter-spacing: -.02em; white-space: nowrap; }
a.logo:hover { background: none; color: var(--ink); }
a.logo span { background: var(--lime); color: var(--on-lime); padding: 2px 8px; margin-inline-start: 2px; display: inline-block; transform: rotate(-2deg); }
nav { display: flex; gap: 2px; align-items: center; }
nav a { padding: 7px 12px; color: var(--ink); text-decoration: none; font: 500 .95rem var(--display); white-space: nowrap; border: 2px solid transparent; }
nav a:hover { border-color: var(--edge); background: none; color: var(--ink); }
nav a[aria-current] { background: var(--ink); color: var(--bg); }
:root[data-theme="dark"] nav a[aria-current] { background: var(--lime); color: var(--on-lime); }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) nav a[aria-current] { background: var(--lime); color: var(--on-lime); } }
#theme { border: 2px solid var(--edge); background: var(--surface); color: var(--ink); width: 38px; height: 38px; border-radius: 0; font-size: 1rem; line-height: 1; margin-inline-start: 8px; }
#theme:hover { background: var(--lime); color: var(--on-lime); }

/* tab bar — מובייל */
.tabbar { display: none; }
@media (max-width: 760px) {
  header nav a { display: none; } header nav a.keep { display: inline-block; }
  body { padding-bottom: 84px; } body.solo { padding-bottom: 0; }
  .tabbar { display: grid; grid-auto-flow: column; grid-auto-columns: 1fr; position: fixed; inset: auto 10px 10px; z-index: 30; background: var(--surface); border: 2px solid var(--edge); box-shadow: 5px 5px 0 var(--sh); }
  .tabbar a { display: grid; justify-items: center; gap: 2px; padding: 9px 2px 7px; color: var(--ink); text-decoration: none; font: 500 .68rem var(--display); }
  .tabbar a + a { border-inline-start: 2px solid var(--soft); }
  .tabbar svg { width: 22px; height: 22px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: square; stroke-linejoin: miter; }
  .tabbar a[aria-current], .tabbar a:hover { background: var(--lime); color: var(--on-lime); }
}

/* טיפוגרפיה */
h1, h2, h3 { font-family: var(--display); letter-spacing: -.025em; text-wrap: balance; }
h1 { font-size: clamp(2.5rem, 8.2vw, 4.6rem); line-height: 1; margin: 0 0 20px; font-weight: 900; }
h1 em { font-style: normal; background: var(--lime); color: var(--on-lime); padding: 0 .16em; -webkit-box-decoration-break: clone; box-decoration-break: clone; }
h2 { font-size: clamp(1.55rem, 4vw, 2rem); line-height: 1.15; margin: 64px 0 18px; font-weight: 900; }
h2::before { content: ""; display: block; width: 56px; height: 8px; background: var(--lime); border: 2px solid var(--edge); margin-bottom: 14px; }
#quiz h2::before { display: none; }
h3 { font-weight: 700; }
.lead { font-size: 1.2rem; color: var(--muted); max-width: 54ch; margin: 0 0 22px; }
.lead b { color: var(--ink); }
.eyebrow { display: inline-block; margin: 0 0 18px; padding: 4px 10px; border: 2px solid var(--edge); background: var(--surface); font: 500 .8rem var(--display); }
.eyebrow::before { content: "● "; color: #1f9d55; }
main > h1:first-child, main > .hero:first-child { margin-top: 52px; }
.step, .meta { color: var(--muted); font: 500 .82rem var(--display); margin: 0; }
small { font-size: .85em; }

/* hero */
.hero { display: grid; grid-template-columns: 1fr auto; gap: 32px; align-items: end; }
.chips { display: flex; flex-wrap: wrap; margin: 0; padding: 0; list-style: none; border: 2px solid var(--edge); width: fit-content; background: var(--surface); }
.chips li { padding: 8px 14px; font-size: .9rem; color: var(--muted); } .chips li + li { border-inline-start: 2px solid var(--edge); }
.chips b { display: block; color: var(--ink); font: 900 1.25rem/1.1 var(--display); }
.print { position: relative; width: 200px; height: 236px; display: flex; flex-direction: column-reverse; align-items: center; gap: 3px; padding-bottom: 16px; }
.print::after { content: ""; position: absolute; inset: auto -6px 0; height: 10px; background: var(--ink); }
.print span { display: block; height: 11px; width: calc(var(--w) * 1%); background: var(--ink); transform-origin: right; animation: layer 9s calc(var(--i) * .42s) infinite both; }
@keyframes layer { 0% { transform: scaleX(0); background: var(--lime); } 5% { transform: scaleX(1); background: var(--lime); } 12%, 88% { transform: scaleX(1); background: var(--ink); opacity: 1; } 95%, 100% { transform: scaleX(1); opacity: 0; } }
@media (max-width: 640px) { .hero { grid-template-columns: 1fr; } .print { display: none; } }

/* משטחים: קו קשה + צל קשה */
#quiz, .card, .note, .table-wrap > table, #drop { background: var(--surface); border: 2px solid var(--edge); box-shadow: 6px 6px 0 var(--sh); }
#quiz { padding: 26px; margin: 40px 0 8px; }
#quiz h2 { margin: 8px 0 20px; font-size: clamp(1.4rem, 4vw, 1.8rem); }
.progress { display: flex; gap: 4px; margin-bottom: 20px; }
.progress i { flex: 1; height: 12px; border: 2px solid var(--edge); background: transparent; }
.progress i.on { background: var(--lime); }
.opts { display: grid; gap: 10px; }
button { font: inherit; cursor: pointer; border-radius: 0; }
.opts button { display: flex; align-items: center; gap: 14px; text-align: start; padding: 14px 16px; background: var(--bg); color: var(--ink); border: 2px solid var(--edge); font-weight: 500; transition: transform .1s, box-shadow .1s, background .1s; }
.opts button::before { content: attr(data-n); flex: none; display: grid; place-items: center; width: 30px; height: 30px; background: var(--ink); color: var(--lime); font: 700 .9rem var(--mono); }
:root[data-theme="dark"] .opts button::before { background: var(--lime); color: var(--on-lime); }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .opts button::before { background: var(--lime); color: var(--on-lime); } }
.opts button:hover, .opts button:focus-visible, .opts button.sel { background: var(--lime); color: var(--on-lime); transform: translate(-2px, -2px); box-shadow: 4px 4px 0 var(--sh); }
.opts button:hover::before, .opts button.sel::before { background: var(--on-lime); color: var(--lime); }
.back { background: none; border: 0; color: var(--muted); margin-top: 18px; padding: 4px 0; font: 500 .85rem var(--display); }
.back:hover { color: var(--ink); }
.fade { animation: fade .25s ease both; }
@keyframes fade { from { opacity: 0; transform: translateY(8px); } }

.card { padding: 24px; margin: 22px 0; position: relative; }
.card h3 { margin: 0 0 4px; font-size: 1.5rem; font-weight: 900; }
.card.top { box-shadow: 8px 8px 0 var(--lime), 8px 8px 0 2px var(--edge); }
.match { display: flex; align-items: center; gap: 12px; margin: 14px 0 4px; font: 500 .82rem var(--display); color: var(--muted); }
.match i { flex: 1; max-width: 260px; height: 14px; border: 2px solid var(--edge); overflow: hidden; }
.match i::after { content: ""; display: block; height: 100%; width: calc(var(--p) * 1%); border-inline-end: 2px solid var(--edge);
  background: repeating-linear-gradient(45deg, var(--lime) 0 6px, color-mix(in srgb, var(--lime) 55%, var(--on-lime)) 6px 8px); }
.match b { color: var(--ink); font-size: 1rem; }
.best, .over { display: inline-block; padding: 3px 10px; font: 700 .78rem var(--display); margin: 0 0 12px; border: 2px solid var(--edge); }
.best { background: var(--lime); color: var(--on-lime); }
.over { background: transparent; color: var(--ink); }
.tags { margin: 14px 0; display: flex; flex-wrap: wrap; gap: 6px; }
.tags span { border: 2px solid var(--soft); padding: 1px 9px; font: 500 .78rem var(--display); color: var(--muted); }
.watch { color: var(--muted); border-inline-start: 6px solid var(--lime); padding-inline-start: 14px; }
.watch b { color: var(--ink); }
.note { padding: 16px 20px; border-inline-start: 10px solid var(--lime); box-shadow: none; }

/* טבלאות → כרטיסים במובייל */
.table-wrap { overflow-x: auto; padding: 0 0 8px; padding-inline-end: 8px; }
table { width: 100%; border-collapse: separate; border-spacing: 0; font-size: .95rem; }
th, td { padding: 12px 16px; text-align: start; border-bottom: 2px solid var(--soft); vertical-align: top; }
tr:last-child td { border-bottom: 0; }
tbody tr:hover { background: color-mix(in srgb, var(--lime) 14%, transparent); }
tr.picked { background: color-mix(in srgb, var(--lime) 30%, transparent); box-shadow: inset -4px 0 0 var(--ink); }
th { background: var(--ink); color: var(--bg); font: 500 .8rem var(--display); border-bottom: 0; }
td a { white-space: nowrap; font: 500 .9rem var(--mono); } td small { color: var(--muted); }
td .best { font-size: .68rem; padding: 0 6px; margin: 0 6px; vertical-align: middle; }
table.kv { border: 0; background: none; box-shadow: none; margin: 12px 0; }
table.kv th { width: 45%; background: none; color: var(--muted); padding-inline-start: 0; font: 500 .85rem var(--display); border-bottom: 2px solid var(--soft); }
table.kv td { font: 700 1rem var(--mono); }
@media (max-width: 640px) {
  .table-wrap > table thead { display: none; }
  .table-wrap > table tr { display: block; padding: 12px 0; border-bottom: 2px solid var(--soft); } .table-wrap > table tr:last-child { border: 0; }
  .table-wrap > table td { display: block; border: 0; padding: 3px 16px; }
}

/* טפסים וכפתורים */
.filters { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; margin: 24px 0; }
.filters label { display: inline-flex; gap: 8px; align-items: center; padding: 8px 12px; border: 2px solid var(--edge); background: var(--surface); font-size: .95rem; cursor: pointer; font-weight: 500; }
input[type="checkbox"] { accent-color: var(--ink); width: 18px; height: 18px; }
select { font: 500 1rem Heebo, sans-serif; padding: 9px 12px; border-radius: 0; border: 2px solid var(--edge); background: var(--surface); color: var(--ink); max-width: 100%; }
.cta { display: inline-block; border: 2px solid var(--edge); background: var(--lime); color: var(--on-lime); padding: 12px 26px; text-decoration: none; font: 700 1.05rem var(--display); margin: 8px 0; box-shadow: 5px 5px 0 var(--sh); transition: transform .1s, box-shadow .1s; }
.cta:hover { transform: translate(-2px, -2px); box-shadow: 7px 7px 0 var(--sh); background: var(--lime); color: var(--on-lime); }
.cta:active { transform: translate(5px, 5px); box-shadow: 0 0 0 var(--sh); }

/* צ'קליסטים */
ol.check { list-style: none; counter-reset: c; padding: 0; margin: 0; display: grid; gap: 10px; }
ol.check li { counter-increment: c; position: relative; padding: 14px 16px; padding-inline-start: 62px; background: var(--surface); border: 2px solid var(--edge); }
ol.check li::before { content: counter(c, decimal-leading-zero); position: absolute; inset-inline-start: 0; top: 0; bottom: 0; width: 46px; display: grid; place-items: center; background: var(--ink); color: var(--lime); font: 700 .95rem var(--mono); }
:root[data-theme="dark"] ol.check li::before { color: var(--on-lime); background: var(--lime); }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) ol.check li::before { color: var(--on-lime); background: var(--lime); } }
ul#slicers, .res { padding-inline-start: 20px; } .res li { margin-bottom: 6px; color: var(--muted); }

/* Preset Porter */
#drop { border-style: dashed; padding: 44px 20px; text-align: center; cursor: pointer; font-weight: 500; transition: background .1s, transform .1s; }
#drop:hover, #drop.on { background: var(--lime); color: var(--on-lime); transform: translate(-2px, -2px); }
code { font: 500 .85em var(--mono); background: var(--bg); border: 2px solid var(--soft); padding: 1px 6px; overflow-wrap: anywhere; }

footer { color: var(--muted); font-size: .9rem; padding-block: 32px; border-top: 2px solid var(--edge); margin-top: 72px; }
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation: none !important; transition: none !important; } html { scroll-behavior: auto; } }

/* מושגי יסוד — איורים סכמטיים */
.fig { margin: 18px 0; padding: 18px; background: var(--surface); border: 2px solid var(--edge); box-shadow: 6px 6px 0 var(--sh); }
.fig svg { display: block; width: 100%; max-width: 360px; height: auto; margin: 0 auto 12px; }
.fig figcaption { color: var(--muted); } .fig figcaption b { color: var(--ink); }
.fig .s { fill: none; stroke: var(--ink); stroke-width: 3; stroke-linejoin: round; } .fig .thin { stroke-width: 2; stroke-dasharray: 5 4; }
.fig .f { fill: var(--bg); } .fig .ink { fill: var(--ink); } .fig .acc { fill: var(--lime); stroke: var(--edge); stroke-width: 2; }
.fig .acc2 { fill: color-mix(in srgb, var(--lime) 45%, var(--bg)); } .fig .glass { fill: color-mix(in srgb, var(--lime) 12%, transparent); }
.fig .t { fill: var(--muted); font: 500 13px Heebo, sans-serif; text-anchor: middle; }
.pair { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; } .pair .fig { margin: 0; }
@media (max-width: 640px) { .pair { grid-template-columns: 1fr; } }
.toc { margin: 8px 0 0; } .toc a { text-decoration: none; font-weight: 700; } .toc a:hover { background: none; text-decoration: underline; }
.tags a { text-decoration: none; color: inherit; } .tags a:hover { background: none; } .tags a span { cursor: help; }