/* Cybersecurity Inu. One page type: a stop error screen for the day's scan.
   Colours measured off art/ref/bsod-park.jpg with tools/refmeasure.mjs. */

@font-face {
  font-family: "Commit Mono";
  src: url("/fonts/commit-mono-400.woff2") format("woff2");
  font-weight: 400; font-style: normal; font-display: swap;
}
@font-face {
  font-family: "Commit Mono";
  src: url("/fonts/commit-mono-700.woff2") format("woff2");
  font-weight: 700; font-style: normal; font-display: swap;
}

:root {
  --blue: #0101a2;          /* the stop field: 23.9% of his frame, its single dominant ink */
  --blue-bright: #0b1de3;   /* his frame edge and the brighter rails */
  --blue-deep: #010170;     /* inset blocks and the grade rail */
  --paper: #ffffff;         /* 13.3:1 on the field */
  --ink-dim: #adadea;       /* 5.6:1 on the field, measured by tools/legibility.mjs */
  --ink-mute: #8f8fdc;      /* 4.5:1 on the field: separators and disabled keys only */
  --green: #14dc03;         /* his memtest strip */
  --green-ink: #04240a;
  --red: #d41a1b;           /* his bottom band */
  --amber: #ffd400;

  --page: 1120px;        /* his own sites cap the reading column here; the bands stay full bleed */
  --rail: 76px;
  --gap: 24px;
  --pad-body: 24px;
  --band: 30px;

  --t-press: .08s;
  --t-colour: .12s;
  --t-hover: .18s;

  font-synthesis: none;
}

* { box-sizing: border-box; }
img, video, table { max-width: 100%; }
[hidden] { display: none !important; }

html { background: var(--blue); }

body {
  margin: 0;
  background: var(--blue);
  color: var(--paper);
  font-family: "Commit Mono", ui-monospace, "SFMono-Regular", Consolas, monospace;
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a { color: inherit; }

/* ---- the full bleed bands -------------------------------------------------------------- */

.band {
  display: flex;
  align-items: center;
  gap: 18px;
  min-height: var(--band);
  padding: 0 20px;
  font-size: 16px;
  letter-spacing: .08em;
  text-transform: uppercase;
  white-space: nowrap;
  overflow: hidden;
}

.band--scan { background: var(--green); color: var(--green-ink); font-weight: 700; }
.band--scan .band__bar { font-weight: 400; letter-spacing: 0; }
.band--alert { background: var(--red); color: var(--paper); font-weight: 700; }
.band--alert a { text-decoration: underline; text-underline-offset: 3px; }

.band__spacer { flex: 1 1 auto; }
.band__bar { font-family: inherit; letter-spacing: -.02em; }
.band__key {
  border: 0;
  background: transparent;
  color: inherit;
  font: inherit;
  letter-spacing: .08em;
  text-transform: uppercase;
  padding: 4px 10px;
  cursor: pointer;
  text-decoration: none;
}
.band__key:hover { background: var(--green-ink); color: var(--green); }
.band--alert .band__key:hover { background: var(--paper); color: var(--red); }
/* With one run there is nowhere to go: the arrow stays readable (5.6:1 on the strip) and simply
   stops being a link, rather than fading into the band. */
.band__key[aria-disabled="true"] { color: #0a4a10; pointer-events: none; }
.band--alert .band__key[aria-disabled="true"] { color: #f0b9b9; }

/* ---- the page column ------------------------------------------------------------------- */

.page {
  width: min(var(--page), 100% - 48px);
  margin: 0 auto;
}

.rule {
  border: 0;
  border-top: 1px solid var(--blue-bright);
  margin: 0;
}
.rule--bleed { width: 100%; }

.section { padding: 34px 0 30px; }
.section__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin: 0 0 16px;
  font-size: 22px;
  font-weight: 700;
  letter-spacing: .02em;
}
.section__head small {
  font-size: 16px;
  font-weight: 400;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--ink-dim);
}

/* ---- the stop block: rail, raster, text ------------------------------------------------ */

.stop {
  display: grid;
  grid-template-columns: var(--rail) 300px minmax(0, 1fr);
  gap: var(--gap);
  padding: 30px 0 34px;
  align-items: start;
}

.grades { display: flex; flex-direction: column; gap: 4px; }
.grades__item {
  display: block;
  width: 100%;
  border: 1px solid var(--blue-bright);
  background: var(--blue-deep);
  color: var(--paper);
  font: inherit;
  padding: 14px 0 12px;
  text-align: center;
  cursor: pointer;
  transition: background var(--t-colour), transform var(--t-press);
}
.grades__item:hover { background: var(--blue-bright); }
.grades__item:active { transform: translateY(1px); }
.grades__item[aria-pressed="true"] { background: var(--paper); color: var(--blue); border-color: var(--paper); }
.grades__letter { display: block; font-size: 26px; font-weight: 700; line-height: 1; }
.grades__count { display: block; font-size: 16px; color: var(--ink-dim); letter-spacing: .04em; }
.grades__item[aria-pressed="true"] .grades__count { color: var(--blue); }

.figure { margin: 0; }
.figure img {
  display: block;
  width: 100%;
  height: auto;
  background: var(--blue);
}
.figure figcaption {
  margin-top: 10px;
  font-size: 16px;
  color: var(--ink-dim);
  line-height: 1.45;
}

.masthead {
  margin: 0 0 4px;
  font-size: 40px;
  font-weight: 700;
  line-height: 1.06;
  letter-spacing: -.01em;
}
.masthead span { color: var(--ink-dim); font-size: 20px; letter-spacing: .08em; }

.lede { margin: 10px 0 14px; font-size: 18px; line-height: 1.46; max-width: 46em; }
.lede b { font-weight: 700; }

.stopline {
  margin: 0 0 14px;
  font-size: 16px;
  letter-spacing: .04em;
  color: var(--paper);
  word-break: break-word;
}
.stopline em { font-style: normal; color: var(--amber); }

.caret {
  display: inline-block;
  width: .6em; height: 1.05em;
  margin-left: .2em;
  background: var(--paper);
  vertical-align: -.18em;
  animation: blink 1.06s steps(1) infinite;
}
@keyframes blink { 0%, 49% { opacity: 1; } 50%, 100% { opacity: 0; } }

.stop--site { grid-template-columns: 148px minmax(0, 1fr); }
.grades--one .grades__item--still { cursor: default; padding: 28px 0 20px; }
.grades--one .grades__letter { font-size: 48px; }
.grades--one .grades__count { font-size: 16px; padding: 0 18px; line-height: 1.35; }
.grades--one .grades__letter--code { font-size: 30px; }
.grades__item--still.grade--F { background: var(--red); border-color: var(--red); color: var(--paper); }
.grades__item--still.grade--F .grades__count { color: var(--paper); }
.grades__item--still.grade--D .grades__letter,
.grades__item--still.grade--C .grades__letter { color: var(--amber); }

.figure--wide { max-width: none; }
.figure--wide img { border: 1px solid var(--blue-bright); }

.mono-dump {
  margin: 14px 0 0;
  white-space: pre-wrap;
  word-break: break-word;
  padding: 12px 18px;
  border: 1px solid var(--blue-bright);
  background: var(--blue);
  color: var(--ink-dim);
  font-size: 16px;
  line-height: 1.35;
  overflow-wrap: anywhere;
}

/* ---- the troubleshooting list, which is the navigation --------------------------------- */

.steps { margin: 0; padding: 0; list-style: none; }
.steps__intro { margin: 0 0 10px; color: var(--ink-dim); font-size: 16px; }
.steps__item + .steps__item { border-top: 1px solid var(--blue-deep); }
.steps__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 10px 18px;
  text-decoration: none;
  transition: background var(--t-hover);
}
.steps__link:hover { background: var(--blue-deep); }
.steps__link[aria-current="page"] { background: var(--paper); color: var(--blue); }
.steps__n { flex: 0 0 auto; font-weight: 700; }
.steps__label { flex: 0 0 auto; }
.steps__dots {
  flex: 1 1 auto;
  min-width: 2em;
  border-bottom: 1px dotted var(--ink-mute);
  transform: translateY(-.28em);
}
.steps__link[aria-current="page"] .steps__dots { border-bottom-color: var(--blue); }
.steps__value { flex: 0 0 auto; color: var(--ink-dim); }
.steps__link[aria-current="page"] .steps__value { color: var(--blue); }

/* ---- the raster block: its own column, caption under, nothing beside it ---------------- */

.plate {
  border: 1px solid var(--blue-bright);
  background: var(--blue-deep);
  padding: 0;
}
.plate__title {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  padding: 12px 26px;
  background: var(--paper);
  color: var(--blue);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
}
.plate__title .grade { font-size: 22px; }
/* the title strip is inverse video, so the grade inks are the ones that read on white */
.plate__title .grade--A, .plate__title .grade--B { color: var(--blue); }
.plate__title .grade--C, .plate__title .grade--D { color: #8a5a00; }
.plate__title .grade--F { color: var(--paper); }
.plate__title .grade--none { color: #4a4a8c; }
.plate__code { text-transform: none; letter-spacing: .04em; }
.plate__body { padding: var(--pad-body); }
.plate__shot { display: block; width: 100%; height: auto; border-top: 1px solid var(--blue-bright); background: var(--blue-deep); }
.plate__caption { padding: 14px var(--pad-body) 18px; font-size: 16px; color: var(--ink-dim); }

.two {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--gap);
}
.two h3 {
  margin: 0 0 10px;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--ink-dim);
}

.rows { margin: 0; }
.row {
  display: grid;
  grid-template-columns: 11em minmax(0, 1fr);
  gap: 14px;
  padding: 8px 0;
  position: relative;
  font-size: 16px;
}
.row + .row::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  border-top: 1px solid var(--blue-deep);
}
.row dt, .row__label { color: var(--ink-dim); margin: 0; }
.row dd, .row__value { margin: 0; overflow-wrap: anywhere; }
.row__value b { font-weight: 700; }

/* ---- the tape: the day's sites --------------------------------------------------------- */

.tape { width: 100%; table-layout: fixed; border-collapse: collapse; font-size: 16px; }
.tape th, .tape td { overflow-wrap: anywhere; }
.tape th {
  text-align: left;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--blue);
  background: var(--paper);
  padding: 9px 20px;
  white-space: nowrap;
}
.tape td { padding: 9px 20px; vertical-align: top; }
.tape tbody tr { border-top: 1px solid var(--blue-deep); cursor: pointer; }
.tape tbody tr:hover { background: var(--blue-deep); }
.tape tbody tr:focus-within { background: var(--blue-deep); outline: 2px solid var(--paper); outline-offset: -2px; }
.tape__n { color: var(--ink-mute); width: 4.5em; white-space: nowrap; }
.tape__host a { text-decoration: none; }
.tape__host a:hover { text-decoration: underline; text-underline-offset: 3px; }
.tape__coin { color: var(--ink-dim); width: 9em; }
.tape__asked { color: var(--ink-dim); }
.tape__grade { width: 6.5em; text-align: center; font-weight: 700; font-size: 18px; }

.grade { font-weight: 700; }
.grade--A { color: var(--paper); }
.grade--B { color: var(--ink-dim); }
.grade--C { color: var(--amber); }
.grade--D { color: var(--amber); }
/* F is red, but as the SURFACE it sits on rather than as a chip around the letter: a chip cannot
   keep 1 em from its own walls at this size without doubling the row height. */
.grade--F { color: var(--paper); }
.tape__grade:has(.grade--F) { background: var(--red); }
.plate__title:has(.grade--F) { background: var(--red); color: var(--paper); }
.plate__title:has(.grade--F) a { color: var(--paper); }
.grade--none { color: var(--ink-mute); }

.find { margin: 0 0 14px; max-width: 34em; }
.find input {
  width: 100%;
  min-height: 48px;
  padding: 10px 16px;
  border: 1px solid var(--paper);
  background: var(--blue-deep);
  color: var(--paper);
  font: inherit;
  font-size: 16px;
}
.find input::placeholder { color: var(--ink-mute); }

/* ---- technical information: the inverse video plate that holds the links --------------- */

.tech {
  background: var(--paper);
  color: var(--blue);
  padding: 22px var(--pad-body) 24px;
  margin: 10px 0 56px;
}
.tech__title {
  margin: 0 0 14px;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
}
.tech__line { display: flex; gap: 12px; align-items: flex-start; flex-wrap: wrap; margin-bottom: 8px; }
.tech__star { flex: 0 0 auto; font-weight: 700; }
.tech__mint {
  flex: 1 1 22em;
  min-width: 0;
  font-size: 17px;
  overflow-wrap: anywhere;
  user-select: all;
}
.tech__mint[data-empty="1"] { color: #4a4a8c; user-select: auto; }
.tech__note { font-size: 16px; color: #3a3a85; margin: 12px 0 0; max-width: 54em; }

.keys { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 16px; }
.key {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-height: 48px;
  padding: 0 18px;
  border: 1px solid var(--blue);
  background: var(--paper);
  color: var(--blue);
  font: inherit;
  font-size: 16px;
  letter-spacing: .04em;
  text-decoration: none;
  cursor: pointer;
  transition: background var(--t-hover), color var(--t-hover), transform var(--t-press);
}
.key:hover { background: var(--blue); color: var(--paper); }
.key:hover .key__mark--swap { filter: invert(1); }
.key:active { transform: translateY(1px); }
.key__mark { width: 19px; height: 19px; display: block; object-fit: contain; }
/* A key with no value yet is dimmed, never faded to grey on grey: its ink stays at 5.5:1 so the
   name of the platform is still readable, and only the mark loses weight. */
.key[aria-disabled="true"], .key[disabled] {
  color: #5a5a9e;
  border-color: #b9b9dd;
  background: #f2f2fa;
  cursor: default;
  pointer-events: none;
}
.key[aria-disabled="true"] .key__mark, .key[disabled] .key__mark { opacity: .55; }
.key--onblue[aria-disabled="true"], .key--onblue[disabled] {
  color: var(--ink-mute);
  border-color: var(--ink-mute);
  background: transparent;
}

.key--onblue {
  border-color: var(--paper);
  background: transparent;
  color: var(--paper);
}
.key--onblue:hover { background: var(--paper); color: var(--blue); }

/* ---- forms ----------------------------------------------------------------------------- */

.field { display: block; margin: 0 0 16px; }
.field__label {
  display: block;
  font-size: 16px;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--ink-dim);
  margin-bottom: 7px;
}
.field input[type="url"], .field input[type="text"] {
  width: 100%;
  min-height: 48px;
  padding: 10px 14px;
  border: 1px solid var(--paper);
  background: var(--blue-deep);
  color: var(--paper);
  font: inherit;
  font-size: 16px;
}
.field input::placeholder { color: var(--ink-mute); }
.field input:focus-visible { outline: 2px solid var(--amber); outline-offset: 2px; }

.note { font-size: 16px; color: var(--ink-dim); max-width: 60em; }
.note strong { color: var(--paper); font-weight: 700; }

.status {
  margin-top: 16px;
  padding: 12px var(--pad-body);
  border: 1px solid var(--blue-bright);
  background: var(--blue-deep);
  min-height: 48px;
  font-size: 16px;
}
.status[data-kind="bad"] { border-color: var(--red); }
.status[data-kind="good"] { border-color: var(--green); }

/* ---- the steps picture on the method page ---------------------------------------------- */

.how { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: var(--gap); }
.how__step { border: 1px solid var(--blue-bright); background: var(--blue-deep); padding: 20px 32px 22px; }
.how__n { font-size: 30px; font-weight: 700; line-height: 1; }
.how__t { font-size: 17px; font-weight: 700; margin: 8px 0 6px; }
.how__p { font-size: 16px; color: var(--ink-dim); margin: 0; line-height: 1.5; }

/* ---- focus and motion ------------------------------------------------------------------ */

:focus-visible { outline: 2px solid var(--amber); outline-offset: 2px; }

@media (prefers-reduced-motion: reduce) {
  .caret { animation: none; opacity: 1; }
  * { transition-duration: .01ms !important; }
}

/* ---- narrow ---------------------------------------------------------------------------- */

@media (max-width: 1000px) {
  .stop { grid-template-columns: var(--rail) minmax(0, 1fr); }
  .stop--site { grid-template-columns: 148px minmax(0, 1fr); }
  .figure { grid-column: 2; order: 2; max-width: 300px; }
  .stop__text { grid-column: 2; order: 1; }
  .how { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 720px) {
  :root { --pad-body: 18px; --gap: 16px; }
  .stop--site { grid-template-columns: minmax(0, 1fr); }
  .grades--one { order: 1; }
  .grades--one .grades__letter { font-size: 40px; }
  .page { width: min(var(--page), 100% - 32px); }
  .band { flex-wrap: wrap; white-space: normal; padding: 7px 16px; row-gap: 4px; }
  .band__bar { display: none; }
  .stop { grid-template-columns: minmax(0, 1fr); gap: 18px; }
  .grades { flex-direction: row; order: 2; }
  .grades__item { flex: 1 1 0; padding: 13px 0 11px; }
  .grades__letter { font-size: 20px; }
  .figure { grid-column: auto; order: 3; max-width: 220px; }
  .stop__text { grid-column: auto; order: 1; }
  .masthead { font-size: 34px; }
  .lede { font-size: 17px; }
  .two { grid-template-columns: minmax(0, 1fr); }
  .row { grid-template-columns: minmax(0, 1fr); gap: 2px; }
  .how { grid-template-columns: minmax(0, 1fr); }
  /* On a phone every table header wraps. With table-layout: fixed a header that refuses to wrap is
     wider than its own column, so it spills past the cell wall and takes the page sideways with it:
     that is what put a 456 px scroll on a 390 px screen. */
  .tape th { white-space: normal; }
  /* the run's tape is two columns here, the site and its grade, so the row number goes */
  .tape__coin, .tape__asked, .tape__n { display: none; }
  .tape__grade { width: 6.5em; }
  .tape th, .tape td { padding-left: 18px; padding-right: 18px; }
  .steps__label { flex: 1 1 auto; }
  .steps__dots { display: none; }
}

@media (max-width: 380px) {
  .page { width: min(var(--page), 100% - 24px); }
  .masthead { font-size: 29px; }
}

/* ---- wide windows: his picture is edge to edge, so the column grows with the glass ---------- */

@media (min-width: 1600px) {
  :root { --page: 1320px; }
}
@media (min-width: 1840px) {
  :root { --page: 1460px; }
  .stop { grid-template-columns: var(--rail) 340px minmax(0, 1fr); }
  /* an inner page has two children, not three: without this the text lands in the figure's column
     and the last third of the window is an empty field */
  .stop--site { grid-template-columns: 200px minmax(0, 1fr); }
}