/* rodriguezv.com: a man page. 80 columns, section names at column 0, bodies indented 7. */

@font-face {
  font-family: "IBM Plex Mono";
  src: url("fonts/IBMPlexMono-Regular.woff2") format("woff2");
  font-weight: 400;
  font-display: swap;
}

@font-face {
  font-family: "IBM Plex Mono";
  src: url("fonts/IBMPlexMono-SemiBold.woff2") format("woff2");
  font-weight: 600;
  font-display: swap;
}

/* each colour is a pair: light-dark(paper, terminal) */
:root {
  color-scheme: light dark;
  --ground:     light-dark(#f3f6f4, #0d1210);
  --text:       light-dark(#2b3530, #d5ddd8);
  --bright:     light-dark(#0d1210, #f3f7f4);
  --dim:        light-dark(#5b6a62, #8fa097);
  --link:       light-dark(#0b744a, #5cc48f);
  --link-hover: light-dark(#075636, #7fd3a6);
  --line: 1.6em;
  --indent: min(7ch, 8vw);
}

:root[data-theme="light"] {
  color-scheme: light;
}

:root[data-theme="dark"] {
  color-scheme: dark;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--ground);
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  margin: 0;
  color: var(--text);
  font: 400 16px/1.6 "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  font-variant-ligatures: none;
}

h1, h2, p, dl, dt, dd, ul, pre {
  margin: 0;
  padding: 0;
  font: inherit;
}

ul {
  list-style: none;
}

::selection {
  background: var(--link);
  color: var(--ground);
}

a {
  color: var(--link);
  text-underline-offset: 3px;
}

a:hover {
  color: var(--link-hover);
}

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

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

.page {
  position: relative;
  max-width: calc(80ch + 48px);
  margin: 0 auto;
  padding: 56px 24px 40px;
  display: flex;
  flex-direction: column;
  gap: var(--line);
}

main {
  display: flex;
  flex-direction: column;
  gap: var(--line);
}

h2,
dt {
  font-weight: 600;
  color: var(--bright);
}

/* section names in capitals, everything under them in lowercase; the prompt keeps what you type */
section {
  text-transform: lowercase;
}

h2 {
  text-transform: uppercase;
}

section > :not(h2) {
  padding-left: var(--indent);
}

section > p + p {
  margin-top: var(--line);
}

.rows > * {
  display: grid;
  grid-template-columns: 9ch minmax(0, 1fr);
  column-gap: 2ch;
}

.rows dd {
  overflow-wrap: anywhere;
}

.cv > * {
  grid-template-columns: 9ch 12ch minmax(0, 1fr);
}

.cv .when {
  color: var(--dim);
}

.cv .who {
  color: var(--bright);
}

@media (max-width: 40em) {
  .cv > * {
    grid-template-columns: 9ch minmax(0, 1fr);
  }

  .cv .what {
    grid-column: 2;
  }
}

/* the theme switch: a sun on a light page, a moon on a dark one */
.switch {
  position: absolute;
  top: 6px;
  right: 12px;
  margin: 0;
  padding: 11px;
  border: 0;
  border-radius: 50%;
  background: none;
  color: var(--dim);
  cursor: pointer;
}

.switch:hover {
  color: var(--text);
}

.switch:focus-visible {
  outline: 2px solid var(--link);
  outline-offset: -5px;
}

.switch svg {
  display: block;
  width: 22px;
  height: 22px;
  fill: currentColor;
}

.switch .moon,
.switch[aria-checked="true"] .sun {
  display: none;
}

.switch[aria-checked="true"] .moon {
  display: block;
}

/* the prompt */
.tty pre {
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.ps1 {
  color: var(--dim);
}

.tty .said {
  color: var(--bright);
}

.tty form {
  position: relative;
  display: flex;
  gap: 1ch;
}

.tty form:focus-within .ps1 {
  color: var(--link);
}

.tty input {
  flex: 1;
  min-width: 0;
  margin: -10px 0;              /* with the padding, a 45px tap target on a 26px row */
  padding: 10px 0;
  border: 0;
  border-radius: 0;
  background: none;
  color: var(--bright);
  font: inherit;
  caret-color: transparent;     /* the block cursor stands in for it */
  outline: none;                /* focus shows on the "$" */
}

.tty input::placeholder {
  color: var(--dim);
  opacity: 1;
}

/* the block cursor, placed by prompt.js: hollow in a background tab, solid and blinking otherwise */
.tty .cursor {
  position: absolute;
  top: 50%;
  width: 1ch;
  height: 1.2em;
  transform: translateY(-50%);
  line-height: 1.2em;
  color: transparent;
  box-shadow: inset 0 0 0 1px var(--dim);
  pointer-events: none;
}

.tty .cursor.on {
  box-shadow: none;
  background: var(--link);
  color: var(--ground);
  animation: blink 1s step-end infinite;
}

@keyframes blink {
  50% {
    opacity: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .tty .cursor.on {
    animation: none;
  }
}

@media (forced-colors: active) {
  .tty input {
    caret-color: auto;
  }

  .tty .cursor {
    display: none;
  }
}

@media print {
  :root {
    --ground: #fff;
    --text: #000;
    --bright: #000;
    --dim: #444;
    --link: #000;
  }

  .page {
    padding: 0;
  }

  .switch,
  .tty {
    display: none;
  }
}