/* WAnsiDraw website. The page is a canvas: black ground, a faint 8x16 cell
   grid, the 16 VGA colors as accents, shade characters instead of lines.
   Mobile first: base rules for phones, wider layouts via min-width. */

@font-face {
  font-family: 'WAnsiVGA';
  src: url('fonts/wansidraw-vga.woff2') format('woff2');
  font-display: swap;
}

:root {
  --c0: #000000; --c1: #0000aa; --c2: #00aa00; --c3: #00aaaa;
  --c4: #aa0000; --c5: #aa00aa; --c6: #aa5500; --c7: #aaaaaa;
  --c8: #555555; --c9: #5555ff; --c10: #55ff55; --c11: #55ffff;
  --c12: #ff5555; --c13: #ff55ff; --c14: #ffff55; --c15: #ffffff;
  --vga: 'WAnsiVGA', 'Courier New', monospace;
  --head: 'Arial Black', 'Helvetica Neue', Helvetica, Arial, sans-serif;
  --text: 'Helvetica Neue', Helvetica, Arial, sans-serif;
  --wrap: 1200px;
  --top: 96px;
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: calc(var(--top) + 16px); }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background-color: var(--c0);
  /* The cell grid of the editor at 2x zoom, barely visible. */
  background-image:
    linear-gradient(rgba(85, 85, 255, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(85, 85, 255, 0.07) 1px, transparent 1px);
  background-size: 16px 32px;
  color: var(--c7);
  font-family: var(--text);
  font-size: 17px;
  line-height: 1.6;
  -webkit-text-size-adjust: 100%;
}

img { max-width: 100%; height: auto; }
a { color: var(--c11); text-underline-offset: 3px; }
a:hover { color: var(--c14); }
a:focus-visible, button:focus-visible, summary:focus-visible { outline: 2px solid var(--c14); outline-offset: 2px; }

h1, h2, h3 { font-family: var(--head); color: var(--c15); font-weight: 900; line-height: 1.08; letter-spacing: -0.01em; margin: 0 0 16px; overflow-wrap: break-word; hyphens: auto; }
h1 { font-size: 30px; }
h2 { font-size: 28px; }
h3 { font-size: 18px; letter-spacing: 0; }
p { margin: 0 0 16px; }

.pixel { image-rendering: crisp-edges; image-rendering: pixelated; display: block; }

.skip {
  position: absolute;
  left: 8px;
  top: -64px;
  z-index: 100;
  padding: 8px 16px;
  background: var(--c14);
  color: var(--c0);
  font-family: var(--vga);
}
.skip:focus { top: 8px; }

/* One blinking text cursor on the page, after the heading of the part
   being read (site.js sets .on). The others keep their place, so nothing
   moves when the cursor wanders. */
/* Drawn as a block from the baseline to the height of the capitals, so it
   stands level with the letters (the VGA character reaches below them). */
.cursor::after {
  content: '';
  display: inline-block;
  width: 0.42em;
  height: 0.72em;
  margin-left: 0.18em;
  vertical-align: baseline;
  background: var(--c11);
  visibility: hidden;
}
.cursor.on::after { visibility: visible; animation: blink 1.06s steps(1) infinite; }
@keyframes blink { 50% { visibility: hidden; } }
@media (prefers-reduced-motion: reduce) { .cursor.on::after { animation: none; } }

/* Show what fits the device: phones (narrow, or a short touch screen) get
   the phone parts, computers and tablets the start buttons. */
@media (max-width: 599.98px), (max-height: 599.98px) and (pointer: coarse) {
  .for-big { display: none !important; }
}
@media (min-width: 600px) and (min-height: 600px), (min-width: 600px) and (pointer: fine) {
  .for-small { display: none !important; }
}

/* ------------------------------------------------------------ buttons */

.btn-start, .btn-line, .btn-phone {
  display: inline-block;
  font-family: var(--vga);
  font-size: 16px;
  line-height: 16px;
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
}
.btn-start {
  padding: 10px 16px;
  background: var(--c1);
  color: var(--c14);
  box-shadow: 6px 6px 0 var(--c3);
}
.btn-start:hover { background: var(--c9); color: var(--c15); }
.btn-start:active { transform: translate(6px, 6px); box-shadow: none; }
.btn-big { padding: 16px 24px; }
.btn-line {
  padding: 8px 14px;
  border: 2px solid var(--c11);
  background: transparent;
  color: var(--c11);
}
.btn-line:hover { background: var(--c11); color: var(--c0); }
.btn-phone {
  padding: 8px 12px;
  background: var(--c4);
  color: var(--c15);
}
.btn-phone:hover { background: var(--c12); color: var(--c15); }

/* ------------------------------------------------------------ header */

.top {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--c0);
  border-bottom: 2px solid var(--c1);
}
.top-inner {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 8px 16px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 16px;
}
.brand { display: block; line-height: 0; margin-right: auto; }
.brand img { width: 132px; height: auto; }
.nav {
  order: 3;
  width: 100%;
  display: flex;
  gap: 4px 20px;
  overflow-x: auto;
  font-family: var(--vga);
  font-size: 16px;
  line-height: 16px;
  scrollbar-width: none;
}
.nav a { color: var(--c7); text-decoration: none; padding: 6px 0; white-space: nowrap; }
.nav a:hover, .nav a[aria-current] { color: var(--c14); }

/* ------------------------------------------------------------ sections */

main { display: block; }
.sec, .hero, .end, .manual { max-width: var(--wrap); margin: 0 auto; padding: 48px 16px; }
.sec-intro { font-size: 19px; color: var(--c7); max-width: 40em; }

.band {
  overflow: hidden;
  white-space: nowrap;
  font-family: var(--vga);
  font-size: 16px;
  line-height: 16px;
  color: var(--c1);
  user-select: none;
}
.band-line { color: var(--c1); margin: 8px 0; }
.band-blue { color: var(--c1); }

/* DOS window with a centered title in the frame */
.win {
  position: relative;
  margin: 0;
  padding: 0;
  border: 6px double var(--c11);
  background: var(--c0);
  box-shadow: 12px 12px 0 var(--c1);
}
.win img { width: 100%; }
.win-title {
  position: absolute;
  top: -12px;
  left: 0;
  right: 0;
  text-align: center;
  font-family: var(--vga);
  font-size: 16px;
  line-height: 16px;
  pointer-events: none;
}
.win-title span { background: var(--c0); color: var(--c11); padding: 0 8px; }

/* Hero */
.hero { display: grid; gap: 40px; padding-top: 40px; }
.hero-text { container-type: inline-size; }
/* The headline in fixed lines. It grows with its column, and a line that
   is still too wide breaks at a space, never inside a word. */
.hero-h1 {
  font-size: 36px;
  font-size: min(12cqi, 88px);
  line-height: 1;
  hyphens: manual;
  overflow-wrap: normal;
  margin-bottom: 20px;
}
.hero-h1 span { display: block; }
/* The last line stays inline, so the cursor sits right after it. */
.hero-h1 span:last-child { display: inline; }
.subline {
  font-family: var(--head);
  font-weight: 900;
  font-size: 20px;
  line-height: 1.2;
  color: var(--c11);
  margin-bottom: 24px;
}
.kicker {
  font-family: var(--vga);
  font-size: 16px;
  line-height: 16px;
  color: var(--c11);
  margin-bottom: 16px;
}
.kicker::before { content: '\25BA '; color: var(--c14); }
.lead { font-size: 19px; color: var(--c15); opacity: 0.86; max-width: 34em; }
.cta { display: flex; flex-wrap: wrap; gap: 20px 24px; align-items: center; margin: 28px 0 16px; }
.cta-note { font-size: 15px; color: var(--c7); }
.phone-box {
  margin-top: 24px;
  padding: 16px;
  border: 2px solid var(--c12);
  color: var(--c15);
}
.phone-box p:last-child { margin: 0; font-family: var(--vga); font-size: 16px; }
.hero-win { align-self: center; }

/* What it is for */
.cols { display: grid; gap: 32px; }
.prose p { font-size: 18px; max-width: 36em; }
.who h3 { font-family: var(--vga); font-weight: normal; font-size: 16px; color: var(--c7); margin-bottom: 16px; }
.who dl { margin: 0; }
.who dl > div { padding: 12px 0; border-top: 1px dashed var(--c8); }
.who dt { font-family: var(--vga); color: var(--c14); }
.who dd { margin: 4px 0 0; }

/* Features: a list with block characters as markers, no boxes */
.feat-list { list-style: none; margin: 32px 0 0; padding: 0; display: grid; gap: 28px 40px; }
.feat-list li { display: grid; grid-template-columns: 48px 1fr; gap: 0 12px; align-items: start; }
.feat-list h3 { margin-bottom: 6px; }
.feat-list p { margin: 0; font-size: 16px; }
.glyph {
  font-family: var(--vga);
  font-size: 32px;
  line-height: 32px;
  text-align: center;
  padding-top: 2px;
}
.c0 .glyph { color: var(--c11); }
.c1 .glyph { color: var(--c14); }
.c2 .glyph { color: var(--c12); }
.c3 .glyph { color: var(--c10); }

/* Sysops on VGA blue, like the bars of TheDraw */
.sysops {
  max-width: none;
  background: var(--c1);
  color: var(--c15);
  display: grid;
  gap: 40px;
}
.sysops > * { max-width: calc(var(--wrap) - 32px); }
.sysops a:not(.btn-line) { color: var(--c14); }
.sysops .btn-line { border-color: var(--c14); color: var(--c14); }
.sysops .btn-line:hover { background: var(--c14); color: var(--c1); }
.sys-win { box-shadow: 12px 12px 0 var(--c0); border-color: var(--c15); }
.sys-win .win-title span { color: var(--c15); }
.sys-text p { max-width: 34em; }

/* History */
.big-quote {
  font-family: var(--head);
  font-weight: 900;
  font-size: 22px;
  line-height: 1.35;
  color: var(--c15);
  max-width: 30em;
}

/* Devices */
.dev-list { list-style: none; margin: 32px 0 0; padding: 0; display: grid; gap: 28px; }
.dev { display: grid; grid-template-columns: 48px 1fr; gap: 0 12px; }
.dev h3, .dev p { grid-column: 2; }
.dev-mark {
  grid-row: 1 / span 2;
  font-family: var(--vga);
  font-size: 32px;
  line-height: 32px;
  text-align: center;
}
.dev-yes .dev-mark { color: var(--c10); }
.dev-no .dev-mark { color: var(--c12); }
.dev-state { font-family: var(--vga); font-weight: normal; font-size: 16px; color: var(--c7); margin-left: 8px; }
.dev-no h3 { color: var(--c7); }
.dev p { margin: 0; }
.dev-actions { display: flex; flex-wrap: wrap; gap: 16px; margin-top: 32px; }
.share-status { width: 100%; margin: 0; color: var(--c10); font-family: var(--vga); font-size: 16px; min-height: 16px; }

/* Closing call */
.end { text-align: center; padding: 64px 16px 80px; }
.end h2 { font-size: 40px; }
.end p { max-width: 30em; margin: 0 auto 32px; }

/* ------------------------------------------------------------ footer */

.foot { margin-top: 32px; }
.foot-inner {
  background: var(--c1);
  color: var(--c15);
  /* Full width blue, the content lines up with the page above. */
  padding: 32px max(16px, calc((100% - var(--wrap)) / 2 + 16px)) 48px;
  display: grid;
  gap: 24px;
}
.foot-title { font-family: var(--vga); font-size: 16px; line-height: 16px; color: var(--c14); margin: 0 0 12px; }
.foot ul { list-style: none; margin: 0; padding: 0; }
.foot li { margin: 4px 0; }
.foot a { color: var(--c15); }
.foot a:hover { color: var(--c14); }
.foot-brand img { width: 132px; margin-bottom: 12px; }
.foot-brand p { margin: 0 0 6px; font-size: 15px; }

/* ------------------------------------------------------------ manual */

.manual { padding-top: 32px; }
.manual-head h1 { font-size: 30px; }
.manual-head p { max-width: 40em; }
.manual-layout { display: grid; gap: 24px; margin-top: 24px; }
.manual-toc details { border: 2px solid var(--c1); padding: 12px 16px; background: var(--c0); }
.manual-toc summary { font-family: var(--vga); font-size: 16px; color: var(--c11); cursor: pointer; }
.manual-toc ol { margin: 12px 0 0; padding-left: 28px; font-size: 15px; line-height: 1.5; }
.manual-toc li { margin: 4px 0; }
.manual-toc a { color: var(--c7); text-decoration: none; }
.manual-toc a:hover { color: var(--c14); }
.manual-toc a.current { color: var(--c14); }
.manual-toc a.current::before { content: '\25BA '; font-family: var(--vga); }
.toc-start { margin-top: 20px; }

.manual-body { min-width: 0; max-width: 46em; }
.manual-body h2 { margin-top: 48px; padding-top: 16px; font-size: 26px; }
.manual-body h2:first-child { margin-top: 0; }
.manual-body h3 { margin-top: 28px; color: var(--c14); }
.manual-body ul, .manual-body ol { padding-left: 24px; margin: 0 0 16px; }
.manual-body li { margin: 6px 0; }
.manual-body li::marker { color: var(--c11); }
.manual-body strong { color: var(--c15); }
.manual-body code { font-family: var(--vga); font-size: 16px; color: var(--c14); }
.to-top { margin-top: 48px; font-family: var(--vga); font-size: 16px; }

/* Tables: stacked on phones, two columns from 700 px */
.table-wrap { margin: 0 0 24px; }
.manual-body table { display: block; border-collapse: collapse; width: 100%; }
.manual-body tbody, .manual-body tr, .manual-body th, .manual-body td { display: block; }
.manual-body tr:first-child { display: none; }
.manual-body tr { padding: 10px 0; border-top: 1px dashed var(--c8); }
.manual-body th, .manual-body td { text-align: left; vertical-align: top; font-weight: normal; padding: 0; }
.manual-body th[scope="row"] { font-family: var(--vga); font-size: 16px; color: var(--c11); margin-bottom: 4px; }

/* ------------------------------------------------------------ wider screens */

@media (min-width: 700px) {
  h1 { font-size: 48px; }
  .subline { font-size: 26px; }
  h2 { font-size: 34px; }
  .feat-list { grid-template-columns: 1fr 1fr; }
  .dev-list { grid-template-columns: repeat(3, 1fr); }
  .manual-body table { display: table; }
  .manual-body tbody { display: table-row-group; }
  .manual-body tr, .manual-body tr:first-child { display: table-row; padding: 0; border: 0; }
  .manual-body th, .manual-body td { display: table-cell; padding: 10px 16px 10px 0; border-top: 1px dashed var(--c8); }
  .manual-body tr:first-child th { font-family: var(--vga); font-size: 16px; color: var(--c7); border-top: 0; }
  .manual-body th[scope="row"] { white-space: nowrap; margin: 0; }
  .foot-inner { grid-template-columns: 2fr 1fr 1fr; }
}

@media (min-width: 900px) {
  :root { --top: 72px; }
  .top-inner { flex-wrap: nowrap; gap: 28px; }
  .brand img { width: 198px; }
  .nav { order: 0; width: auto; overflow: visible; }
  .hero { grid-template-columns: 1.05fr 1fr; align-items: center; gap: 56px; padding-top: 72px; padding-bottom: 72px; }
  h1 { font-size: 56px; }
  .cols { grid-template-columns: 1.4fr 1fr; gap: 64px; }
  .sysops { padding: 64px max(16px, calc((100% - var(--wrap)) / 2 + 16px)); }
  .big-quote { font-size: 28px; }
  .end h2 { font-size: 56px; }
}

@media (min-width: 1000px) {
  .manual-layout { grid-template-columns: 300px minmax(0, 1fr); gap: 48px; align-items: start; }
  .manual-toc { position: sticky; top: calc(var(--top) + 16px); }
  .manual-toc details { max-height: calc(100vh - var(--top) - 48px); overflow-y: auto; }
  .manual-toc summary { pointer-events: none; list-style: none; }
  .manual-toc summary::-webkit-details-marker { display: none; }
}

@media (min-width: 1100px) {
  .feat-list { grid-template-columns: repeat(3, 1fr); }
  .sysops { grid-template-columns: 640px minmax(0, 1fr); align-items: center; gap: 64px; }
}

/* The pictures at exactly one pixel per pixel, as sharp as in the editor. */
@media (min-width: 1240px) {
  .hero { grid-template-columns: minmax(0, 1fr) 652px; max-width: 1320px; }
}