/* PADX OS: a TempleOS-like desktop. 16 VGA colours, text cells, frames drawn with box characters. */
@font-face { font-family: "PxEGA"; src: url("../fonts/Px437_IBM_EGA_8x8.ttf") format("truetype"); font-display: swap; }
@font-face { font-family: "PxVGA"; src: url("../fonts/PxPlus_IBM_VGA_8x16.ttf") format("truetype"); font-display: swap; }

:root {
  --black: #000000; --blue: #0000aa; --green: #00aa00; --cyan: #00aaaa; --red: #aa0000; --purple: #aa00aa;
  --brown: #aa5500; --ltgray: #aaaaaa; --dkgray: #555555; --ltblue: #5555ff; --ltgreen: #55ff55; --ltcyan: #55ffff;
  --ltred: #ff5555; --ltpurple: #ff55ff; --yellow: #ffff55; --white: #ffffff;
  --line: 16px;
  --text: "PxVGA", "Consolas", monospace;
  --cell: "PxEGA", "PxVGA", monospace;
  color-scheme: light;
}
* { box-sizing: border-box; }
html { background: var(--white); scroll-padding-top: 56px; }
body { margin: 0; background: var(--white); color: var(--blue); font: 16px/var(--line) var(--text); font-synthesis: none; -webkit-font-smoothing: none; }
img { image-rendering: pixelated; }
a { color: var(--red); text-decoration: underline; text-underline-offset: 3px; }
a:hover { background: var(--yellow); }
:focus-visible { outline: 2px solid var(--purple); outline-offset: 2px; }
[tabindex="-1"]:focus { outline: none; }
button, input { font: inherit; color: inherit; }
[hidden] { display: none !important; }
.skip { position: absolute; left: 8px; top: -40px; background: var(--yellow); color: var(--black); padding: 8px; z-index: 50; }
.skip:focus { top: 8px; }

/* ---------- status bar: the OS's own top line ---------- */
.bar { position: sticky; top: 0; z-index: 20; background: var(--blue); color: var(--white); display: flex; flex-wrap: wrap; align-items: stretch; gap: 0 20px; padding: 0 12px; min-height: 36px; }
.bar .os { color: var(--yellow); font-family: var(--cell); display: flex; align-items: center; text-decoration: none; }
.bar .os:hover { background: none; color: var(--white); }
.bar .clock, .bar .serve { display: flex; align-items: center; white-space: nowrap; }
.bar .serve b { color: var(--yellow); font-weight: normal; margin-left: 8px; }
.tasks { display: flex; margin: 0 0 0 auto; padding: 0; list-style: none; }
.tasks a { display: flex; align-items: center; height: 100%; min-height: 36px; padding: 0 10px; color: var(--white); text-decoration: none; white-space: nowrap; }
.tasks a .k { color: var(--ltcyan); margin-right: 8px; }
.tasks a:hover { background: var(--ltblue); }
.tasks a[aria-current="page"] { background: var(--white); color: var(--blue); }
.tasks a[aria-current="page"] .k { color: var(--red); }

/* ---------- windows: frames of ═ ║ characters ---------- */
.desk { padding: 20px 16px 40px; margin: 0 auto; display: grid; gap: 20px; }
.win { position: relative; padding: 28px 24px 24px; background: var(--white); min-width: 0; }
.win > .edge { position: absolute; left: 0; right: 0; height: var(--line); display: flex; color: var(--blue); pointer-events: none; overflow: hidden; white-space: pre; line-height: var(--line); }
.win > .edge.t { top: 0; } .win > .edge.b { bottom: 0; }
.win > .edge .fill { flex: 1; overflow: hidden; }
.win > .side { position: absolute; top: var(--line); bottom: var(--line); width: 8px; overflow: hidden; white-space: pre; color: var(--blue); pointer-events: none; line-height: var(--line); }
.win > .side.l { left: 0; } .win > .side.r { right: 0; }
.win > h2.title { position: absolute; top: 0; left: 16px; margin: 0; padding: 0 8px; background: var(--white); color: var(--blue); font: 16px/var(--line) var(--cell); z-index: 1; max-width: calc(100% - 32px); white-space: nowrap; overflow: hidden; }
.win.dialog > .edge, .win.dialog > .side, .win.dialog > h2.title { color: var(--purple); }

/* text */
.sec { margin: 24px 0 8px; font: 16px/var(--line) var(--cell); color: var(--blue); }
.sec::before { content: "-] "; }
.sec:first-child { margin-top: 0; }
.p { margin: 0 0 12px; }
.note { color: var(--dkgray); }
.blk { color: var(--black); } .gry { color: var(--dkgray); } .red { color: var(--red); }
.up { color: var(--green); } .down { color: var(--red); }
.hl { background: var(--yellow); color: var(--black); padding: 0 4px; }
.tag { display: inline-block; font: 16px/var(--line) var(--cell); padding: 0 4px; color: var(--black); vertical-align: 1px; }
.tag.hot { background: var(--ltred); } .tag.new { background: var(--yellow); } .tag.prev { background: var(--ltcyan); }
.cursor { display: inline-block; width: 8px; height: 16px; background: var(--blue); vertical-align: -3px; margin-left: 4px; animation: blink 1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }

/* buttons as text: [ LABEL ] */
.key { background: none; border: 0; padding: 6px 0; cursor: pointer; color: var(--red); font: 16px/var(--line) var(--cell); min-height: 32px; white-space: nowrap; }
.key::before { content: "["; color: var(--blue); } .key::after { content: "]"; color: var(--blue); }
.key:hover:not(:disabled) { background: var(--yellow); }
.key:disabled { color: var(--ltgray); cursor: not-allowed; }
.key.mini { font-family: var(--text); }
.key.big { background: var(--blue); color: var(--white); padding: 10px 12px; width: 100%; }
.key.big::before, .key.big::after { color: var(--yellow); }
.key.big:hover:not(:disabled) { background: var(--ltblue); }
.key.big:disabled { background: var(--ltgray); color: var(--white); }
.key[aria-pressed="true"] { background: var(--ltcyan); }
.field { border: 0; border-bottom: 2px solid var(--blue); background: var(--ltcyan); color: var(--black); padding: 6px 8px; width: 12ch; min-height: 36px; }
.field:focus { background: var(--yellow); outline: none; }

/* ---------- home ---------- */
.home { max-width: 1400px; grid-template-columns: minmax(0, 400px) minmax(0, 1fr); align-items: start; }
.col { display: grid; gap: 20px; min-width: 0; }

.about .id { display: grid; grid-template-columns: 112px 1fr; gap: 16px; align-items: center; }
.about .emblem { width: 112px; height: 112px; }
.about h1 { margin: 0; font: 24px/28px var(--cell); color: var(--blue); }
.about h1 .tk { display: block; color: var(--red); }
.about .what { margin: 8px 0 0; color: var(--black); }
.nums { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin: 20px 0 16px; }
.nums .n { background: var(--ltcyan); padding: 8px 10px; }
.nums .n .l { display: block; font: 16px/var(--line) var(--cell); color: var(--blue); }
.nums .n .v { display: block; font: 24px/28px var(--text); color: var(--black); margin: 6px 0 2px; overflow-wrap: anywhere; }
.nums .n .s { display: block; color: var(--dkgray); }
.ca .l { font: 16px/var(--line) var(--cell); }
.ca .well { display: flex; align-items: stretch; margin-top: 8px; background: var(--blue); }
.ca .addr { flex: 1; color: var(--yellow); padding: 8px 10px; word-break: break-all; user-select: all; min-width: 0; }
.ca .addr.none { color: var(--white); user-select: text; word-break: normal; }
.ca .well .key { background: var(--white); padding: 0 10px; margin: 2px; }
.ca .well .key:disabled { background: var(--ltgray); color: var(--white); }
.ca .well .key:disabled::before, .ca .well .key:disabled::after { color: var(--white); }
.ca .msg { display: block; min-height: 16px; margin-top: 4px; color: var(--green); }
.ca .msg.err { color: var(--red); }
.links { display: grid; gap: 4px; margin-top: 8px; }
.links .buy { display: flex; align-items: center; justify-content: center; gap: 10px; min-height: 48px; background: var(--red); color: var(--white); text-decoration: none; font: 16px/var(--line) var(--cell); }
.links .buy:hover { background: var(--ltred); color: var(--black); }
.links .buy img { width: 22px; height: 22px; image-rendering: auto; }
.links .buy.off { background: var(--ltgray); color: var(--white); cursor: not-allowed; }
.links .buy.off img { filter: grayscale(1); opacity: .7; }
.links .pair { display: grid; grid-template-columns: 1fr 1fr; gap: 4px; }
.links .pair a, .links .pair span { display: flex; align-items: center; justify-content: center; gap: 8px; min-height: 44px; }
.links .pair img { width: 18px; height: 18px; image-rendering: auto; }
.links .pair span { color: var(--dkgray); }
.links .pair span img { filter: grayscale(1); opacity: .6; }
.links .soon { text-align: center; color: var(--dkgray); margin: 4px 0 0; }

.steps { list-style: none; margin: 0; padding: 0; display: grid; gap: 14px; }
.steps li { display: grid; grid-template-columns: 32px 1fr; gap: 8px; color: var(--black); }
.steps b { font: 32px/32px var(--cell); color: var(--red); font-weight: normal; }
.steps .h { display: block; font: 16px/var(--line) var(--cell); color: var(--blue); margin-bottom: 4px; }
.how .more { margin: 16px 0 0; }
.tip { margin-top: 16px; border-top: 2px dotted var(--ltgray); padding-top: 12px; }
.tipl { display: inline-block; background: var(--ltgreen); color: var(--black); font: 16px/var(--line) var(--cell); padding: 0 4px; }
.tip p { margin: 8px 0 4px; color: var(--black); min-height: 32px; }

/* menu: composition bar + rows */
.summary { display: flex; flex-wrap: wrap; gap: 8px 16px; align-items: center; margin-bottom: 12px; color: var(--black); }
.compo { display: flex; height: 24px; margin: 0 0 8px; overflow: hidden; font-size: 24px; line-height: 24px; }
.compo span { white-space: nowrap; overflow: hidden; }
.legend { display: flex; flex-wrap: wrap; gap: 4px 16px; margin: 0 0 16px; color: var(--black); }
table.menu { width: 100%; border-collapse: collapse; }
table.menu th { text-align: right; font: 16px/var(--line) var(--text); color: var(--blue); padding: 0 0 8px 12px; border-bottom: 2px solid var(--blue); white-space: nowrap; }
table.menu th:first-child { text-align: left; padding-left: 0; }
table.menu td { text-align: right; padding: 10px 0 10px 12px; border-bottom: 2px dotted var(--ltgray); color: var(--black); vertical-align: middle; white-space: nowrap; }
table.menu td.pad { text-align: left; padding-left: 0; white-space: normal; }
.padcell { display: grid; grid-template-columns: 40px 1fr; gap: 10px; align-items: center; }
.ico { width: 40px; height: 40px; image-rendering: auto; background: var(--ltgray); display: block; }
.padcell .nm { font: 16px/var(--line) var(--cell); color: var(--black); white-space: nowrap; }
.padcell .tkr .tag { margin-left: 6px; }
.padcell .tkr { color: var(--dkgray); }
td.w { font: 24px/24px var(--cell); color: var(--red); }
.idle { background: var(--yellow); color: var(--black); padding: 8px 10px; margin: 12px 0 0; }
.out { margin: 16px 0 0; color: var(--black); }
.out b { font-weight: normal; font-family: var(--cell); }
.foot { margin: 12px 0 0; color: var(--dkgray); }

/* serving: the kitchen order ticket */
.serve-head { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: flex-end; gap: 16px 32px; margin-bottom: 12px; }
.clockline .l, .dry .l { display: block; font: 16px/var(--line) var(--cell); color: var(--blue); }
.clockline .big { display: block; font: 32px/36px var(--cell); color: var(--black); margin: 6px 0 4px; }
.clockline .s { color: var(--dkgray); }
.dry .row { display: flex; align-items: center; gap: 8px; margin: 6px 0 2px; }
.dry .quick { display: flex; flex-wrap: wrap; gap: 0 10px; }
.dry .quick .key { min-height: 28px; }
.dry .quick .key::after { content: " SOL]"; }
.ticket { border-top: 2px solid var(--blue); border-bottom: 2px solid var(--blue); }
.tk-head { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 4px 16px; background: var(--blue); color: var(--white); padding: 6px 10px; }
.tk-head b { font: 16px/var(--line) var(--cell); font-weight: normal; color: var(--yellow); }
.tk-row { display: grid; grid-template-columns: 28px 136px minmax(60px, 1fr) 6ch 10ch 12ch; gap: 0 12px; align-items: center; padding: 8px 10px; border-bottom: 2px dotted var(--ltgray); color: var(--black); }
.tk-row.cols { padding-top: 10px; padding-bottom: 6px; color: var(--blue); border-bottom: 2px solid var(--blue); }
.tk-row .r { text-align: right; white-space: nowrap; }
.tk-row .nm { font: 16px/var(--line) var(--cell); white-space: nowrap; overflow: hidden; }
.tk-row .logo { width: 28px; height: 28px; display: block; image-rendering: auto; background: var(--ltgray); }
.tk-row .logo.sol { background: none; color: var(--brown); font: 16px/28px var(--text); overflow: hidden; }
.tk-row .get { color: var(--green); }
.tk-row .wait { color: var(--brown); }
.meter { position: relative; display: block; height: 16px; overflow: hidden; white-space: nowrap; color: var(--ltgray); line-height: 16px; }
.meter .fill { position: absolute; left: 0; top: 0; bottom: 0; overflow: hidden; white-space: nowrap; transition: width .6s steps(12); }
.tk-sum { display: flex; justify-content: space-between; gap: 16px; padding: 6px 10px; color: var(--black); }
.tk-sum:first-of-type { border-top: 2px dashed var(--blue); }
.tk-sum.total { font: 16px/var(--line) var(--cell); color: var(--blue); }
.tk-sum span:last-child { white-space: nowrap; text-align: right; }
.tk-foot { padding: 6px 10px 8px; color: var(--dkgray); }
.ticket .tk-row, .ticket .tk-sum { transition: opacity .01s; }
.ticket.printing .tk-row:not(.in), .ticket.printing .tk-sum:not(.in) { opacity: 0; }

.lines { margin: 0; padding: 0; list-style: none; }
.lines li { display: flex; justify-content: space-between; gap: 16px; padding: 4px 0; border-bottom: 2px dotted var(--ltgray); color: var(--black); }
.lines li:last-child { border-bottom: 0; }
.lines li span:last-child { text-align: right; white-space: nowrap; }

/* ---------- pages ---------- */
.page { max-width: 1040px; grid-template-columns: minmax(0, 1fr); }
.page.wide { max-width: 1240px; }
.lead { margin: 0 0 20px; color: var(--black); max-width: 70ch; }
.state { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; margin: 0 0 20px; }
.state .n { background: var(--ltcyan); padding: 10px; }
.state .l { display: block; font: 16px/var(--line) var(--cell); color: var(--blue); }
.state .v { display: block; margin-top: 6px; color: var(--black); overflow-wrap: anywhere; }
table.t { width: 100%; border-collapse: collapse; margin: 0 0 16px; }
table.t th { text-align: left; font: 16px/var(--line) var(--text); color: var(--blue); padding: 0 12px 8px 0; border-bottom: 2px solid var(--blue); }
table.t td { padding: 8px 12px 8px 0; color: var(--black); border-bottom: 2px dotted var(--ltgray); vertical-align: top; }
table.t .num { text-align: right; }
table.t td.empty { color: var(--dkgray); text-align: center; padding: 16px 0; }
.rules3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; margin: 8px 0 0; }
.rules3 > div { border-top: 2px solid var(--blue); padding-top: 8px; color: var(--black); }
.rules3 b { display: block; font: 16px/var(--line) var(--cell); color: var(--blue); font-weight: normal; margin-bottom: 4px; }

/* redeem */
.rd { display: grid; grid-template-columns: minmax(0, 360px) minmax(0, 1fr); gap: 32px; align-items: start; }
.rd label.l { display: block; font: 16px/var(--line) var(--cell); color: var(--blue); margin-bottom: 8px; }
.rd .field { width: 100%; font-size: 24px; line-height: 24px; }
.rd .quick { display: flex; flex-wrap: wrap; gap: 0 12px; margin: 6px 0 0; }
.rd .sum { background: var(--ltcyan); padding: 10px; margin: 16px 0; color: var(--black); }
.rd .sum div { display: flex; justify-content: space-between; gap: 12px; padding: 2px 0; }
.rd .sum .tot { font-size: 24px; line-height: 28px; }
.example { background: var(--yellow); color: var(--black); padding: 8px 10px; margin: 0 0 20px; }

/* new */
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(340px, 1fr)); gap: 20px; }
.card-top { display: grid; grid-template-columns: 40px 1fr auto; gap: 10px; align-items: center; margin-bottom: 12px; }
.card-top .nm { font: 16px/var(--line) var(--cell); color: var(--black); }
.verdict { font: 16px/var(--line) var(--cell); padding: 4px 8px; color: var(--black); white-space: nowrap; }
.verdict.pass { background: var(--ltgreen); } .verdict.fail { background: var(--ltred); } .verdict.pending { background: var(--yellow); }
.check { list-style: none; margin: 0 0 10px; padding: 0; }
.check li { display: grid; grid-template-columns: 32px 1fr auto; gap: 4px; padding: 3px 0; color: var(--black); }
.check li b { font-weight: normal; font-family: var(--text); }
.check li .val { color: var(--dkgray); text-align: right; white-space: nowrap; }
.check .ok b { color: var(--green); } .check .no b, .check .no { color: var(--red); } .check .wait b { color: var(--brown); }

/* docs */
.docs-grid { display: grid; grid-template-columns: 230px minmax(0, 1fr); gap: 40px; align-items: start; }
.toc { position: sticky; top: 60px; }
.toc .h { font: 16px/var(--line) var(--cell); color: var(--blue); margin: 0 0 8px; }
.toc ol { list-style: none; margin: 0; padding: 0; counter-reset: toc; }
.toc li { counter-increment: toc; }
.toc a { display: block; padding: 4px 6px; text-decoration: none; color: var(--red); }
.toc a::before { content: counter(toc, decimal-leading-zero) " "; color: var(--blue); }
.toc a[aria-current="true"] { background: var(--blue); color: var(--white); }
.toc a[aria-current="true"]::before { color: var(--yellow); }
.article { max-width: 74ch; color: var(--black); }
.article h3 { font: 16px/var(--line) var(--cell); color: var(--blue); margin: 36px 0 10px; }
.article h3:first-child { margin-top: 0; }
.article h3::before { content: "-] "; }
.article p { margin: 0 0 12px; }
.article ul, .article ol { margin: 0 0 12px; padding-left: 24px; }
.article li { margin: 4px 0; }
.article code { background: var(--ltcyan); padding: 0 4px; color: var(--black); font-family: var(--text); }
.article .ex { background: var(--ltcyan); padding: 10px; margin: 0 0 12px; }
.article table.t { margin-bottom: 12px; }
.article dt { font-family: var(--cell); color: var(--blue); margin-top: 14px; }
.article dd { margin: 4px 0 0 0; }
.risk { color: var(--dkgray); margin-top: 32px; }

/* ---------- responsive ---------- */
@media (max-width: 980px) {
  .home { grid-template-columns: minmax(0, 1fr); max-width: 720px; }
  .home .col { display: contents; }
  .home .about { order: 1; } .home .main > :first-child { order: 2; } .home .main > :last-child { order: 3; } .home .how { order: 4; }
  .docs-grid { grid-template-columns: minmax(0, 1fr); gap: 24px; }
  .toc { position: static; }
  .rd { grid-template-columns: minmax(0, 1fr); }
  .rules3, .state { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 760px) {
  .bar { gap: 0 12px; padding: 0 10px; }
  .tasks { margin: 0 -10px; width: calc(100% + 20px); display: grid; grid-template-columns: repeat(5, 1fr); border-top: 2px solid var(--ltblue); }
  .tasks a { justify-content: center; min-height: 44px; padding: 0 2px; }
  .tasks a .k { display: none; }
  .desk { padding: 16px 8px 32px; gap: 16px; }
  .win { padding: 28px 16px 20px; }
  .compo { font-size: 16px; height: 16px; line-height: 16px; }
  table.menu thead { display: none; }
  table.menu, table.menu tbody { display: block; width: 100%; }
  table.menu tr { display: grid; grid-template-columns: 1fr auto; gap: 4px 12px; padding: 10px 0; border-bottom: 2px dotted var(--ltgray); }
  table.menu td { display: block; border: 0; padding: 0; text-align: left; white-space: normal; }
  table.menu td.pad { grid-column: 1; } table.menu td.w { grid-column: 2; grid-row: 1; align-self: center; }
  table.menu td.x { grid-column: 1 / -1; padding-left: 50px; color: var(--black); }
  table.menu td.x::before { content: attr(data-l) ": "; color: var(--blue); }
  table.t.stack thead { display: none; }
  table.t.stack tr { display: block; padding: 8px 0; border-bottom: 2px dotted var(--ltgray); }
  table.t.stack td { display: flex; justify-content: space-between; gap: 16px; border: 0; padding: 2px 0; text-align: right; }
  table.t.stack td::before { content: attr(data-l); color: var(--blue); text-align: left; }
  table.t.stack td.empty::before { content: none; }
  .cards { grid-template-columns: minmax(0, 1fr); }
  .tk-row { grid-template-columns: 28px minmax(0, 1fr) auto; grid-template-areas: "logo nm pct" "logo bar bar" ". sol get"; gap: 4px 10px; }
  .tk-row.cols { display: none; }
  .tk-row > :nth-child(1) { grid-area: logo; align-self: start; } .tk-row > :nth-child(2) { grid-area: nm; } .tk-row > :nth-child(3) { grid-area: bar; }
  .tk-row > :nth-child(4) { grid-area: pct; } .tk-row > :nth-child(5) { grid-area: sol; text-align: left; } .tk-row > :nth-child(6) { grid-area: get; }
}
@media (max-width: 400px) {
  .about .id { grid-template-columns: 80px 1fr; }
  .about .emblem { width: 80px; height: 80px; }
  .tasks a { font-size: 14px; }
  .nums .n .v { font-size: 24px; line-height: 28px; }
  .key.big { font-family: var(--text); }
}
@media (max-width: 340px) {
  .tk-sum.total { font-family: var(--text); }
  .nums { grid-template-columns: 1fr; }
  .card-top { grid-template-columns: 40px 1fr; }
  .card-top .verdict { grid-column: 1 / -1; justify-self: start; }
}
@media (prefers-reduced-motion: reduce) {
  .cursor { animation: none; }
  .meter .fill { transition: none; }
}