/*
 * Cloud runbook. Tokens, type and rules follow the portfolio
 * (yashverma.cloud): six colours, Overpass, 0 radius, hairline rows,
 * no gradient, glow, shadow or blur. Signal amber marks cautions and focus only.
 */

/* --- Fonts (self-hosted, SIL OFL 1.1, see fonts/) ---------------------- */

@font-face {
  font-family: 'Overpass Variable';
  font-style: normal;
  font-display: swap;
  font-weight: 100 900;
  src: url('fonts/overpass-latin-variable.woff2') format('woff2-variations');
}

@font-face {
  font-family: 'Overpass Mono';
  font-style: normal;
  font-display: swap;
  font-weight: 400;
  src: url('fonts/overpass-mono-latin-400.woff2') format('woff2');
}

/* --- Tokens -------------------------------------------------------------- */

:root {
  --deep: #0c2442; /* code, footer, inputs */
  --blueprint: #15345c; /* page ground */
  --rule: #5580b0; /* borders and interactive edges. 3.04:1 on blueprint */
  --line: #eaf1f4; /* primary text. 10.96:1 on blueprint */
  --muted: #8fa9c4; /* secondary text. 5.15:1 on blueprint, 6.42:1 on deep */
  --signal: #f5a524; /* cautions and focus only. 6.13:1 on blueprint */
  --rule-faint: color-mix(in srgb, var(--rule) 45%, transparent);

  --font-sans: 'Overpass Variable', 'Overpass', ui-sans-serif, system-ui, -apple-system,
    'Segoe UI', sans-serif;
  --font-mono: 'Overpass Mono', ui-monospace, 'SFMono-Regular', 'Cascadia Mono', monospace;

  --fs-display-l: clamp(1.875rem, 1.55rem + 1.1vw, 2.5rem);
  --fs-display-m: clamp(1.4375rem, 1.24rem + 0.55vw, 1.75rem);
  --fs-body-l: clamp(1.1875rem, 1.1rem + 0.28vw, 1.3125rem);
  --fs-body: clamp(1.0625rem, 1.03rem + 0.1vw, 1.125rem);
  --fs-body-s: clamp(0.9375rem, 0.93rem + 0.05vw, 0.96875rem);
  --fs-micro: clamp(0.8125rem, 0.81rem + 0.04vw, 0.84375rem);

  --s-1: 0.25rem;
  --s-2: 0.5rem;
  --s-3: 0.75rem;
  --s-4: 1rem;
  --s-6: 1.5rem;
  --s-8: 2rem;
  --s-12: 3rem;
  --s-16: 4rem;

  --content-max: 1120px;
  --gutter: 1.25rem;
  --header-h: 52px;
}

@media (min-width: 48rem) {
  :root {
    --gutter: 2.5rem;
  }
}

/* --- Base ---------------------------------------------------------------- */

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

* {
  margin: 0;
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-padding-top: calc(var(--header-h) + var(--s-4));
}

body {
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  background: var(--blueprint);
  color: var(--line);
  font-family: var(--font-sans);
  font-size: var(--fs-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3 {
  font-weight: 700;
  text-wrap: balance;
}

h1 {
  font-size: var(--fs-display-l);
  line-height: 1.12;
  letter-spacing: -0.015em;
}

h2 {
  font-size: var(--fs-display-m);
  line-height: 1.25;
  letter-spacing: -0.01em;
}

p {
  text-wrap: pretty;
}

a {
  color: inherit;
  text-decoration-color: var(--rule);
  text-underline-offset: 0.2em;
  text-decoration-thickness: 1px;
}

a:hover {
  text-decoration-color: var(--line);
}

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

code,
pre,
kbd {
  font-family: var(--font-mono);
}

kbd {
  font-size: 0.9em;
  padding: 0 0.3em;
  border: 1px solid var(--rule);
  color: var(--line);
}

.micro {
  font-size: var(--fs-micro);
  line-height: 1.4;
  letter-spacing: 0.01em;
  font-weight: 600;
  color: var(--muted);
}

.standfirst {
  font-size: var(--fs-body-l);
  line-height: 1.5;
  color: var(--muted);
  max-width: 46ch;
}

.wrap {
  width: 100%;
  max-width: var(--content-max);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  left: var(--s-2);
  top: var(--s-2);
  z-index: 100;
  padding: var(--s-2) var(--s-4);
  background: var(--deep);
  border: 1px solid var(--rule);
  color: var(--line);
  text-decoration: none;
  transform: translateY(-200%);
}

.skip-link:focus-visible {
  transform: translateY(0);
}

/* --- Header and footer --------------------------------------------------- */

.bar {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--header-h);
  background: var(--blueprint);
  border-bottom: 1px solid var(--rule-faint);
}

.bar-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--s-4);
}

.wordmark {
  font-weight: 700;
  letter-spacing: -0.01em;
  white-space: nowrap;
}

.wordmark a {
  text-decoration: none;
}

.crumb {
  font-weight: 600;
  color: var(--muted);
}

.bar nav ul {
  display: flex;
  gap: var(--s-6);
  list-style: none;
  padding: 0;
}

.bar nav a {
  font-size: var(--fs-micro);
  font-weight: 600;
  color: var(--muted);
  text-decoration: none;
}

.bar nav a:hover,
.bar nav a[aria-current='page'] {
  color: var(--line);
}

.bar nav a[aria-current='page'] {
  text-decoration: underline;
  text-decoration-color: var(--line);
}

@media (max-width: 30rem) {
  .crumb {
    display: none;
  }

  .bar nav ul {
    gap: var(--s-4);
  }
}

footer {
  margin-top: var(--s-16);
  background: var(--deep);
  border-top: 1px solid var(--rule-faint);
  padding-block: var(--s-8);
}

.foot {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-2) var(--s-6);
  justify-content: space-between;
}

/* --- Intro and search ---------------------------------------------------- */

main {
  flex: 1 0 auto;
}

main:focus {
  outline: none;
}

.intro {
  padding-block: var(--s-12) var(--s-8);
}

.intro .standfirst {
  margin-top: var(--s-4);
}

.search {
  position: relative;
  max-width: 46rem;
}

.search-icon {
  position: absolute;
  left: var(--s-4);
  top: 14px;
  z-index: 1;
  color: var(--muted);
  pointer-events: none;
}

.search input {
  display: block;
  width: 100%;
  min-height: 48px;
  padding: var(--s-3) var(--s-4) var(--s-3) 3rem;
  font: inherit;
  /* 16px or more stops iOS zooming the page when the field takes focus. */
  font-size: max(16px, var(--fs-body));
  color: var(--line);
  background: var(--deep);
  border: 1px solid var(--rule);
  border-radius: 0;
  -webkit-appearance: none;
  appearance: none;
}

.search input::placeholder {
  color: var(--muted);
  opacity: 1;
}

.search input:hover {
  border-color: var(--line);
}

.search input:focus-visible {
  outline-offset: 0;
}

.search-meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--s-2) var(--s-4);
  margin-top: var(--s-2);
  min-height: 1.4em;
}

/* Keyboard hints are noise on touch screens. */
@media (hover: none) {
  .hint {
    display: none;
  }
}

/* --- Layout -------------------------------------------------------------- */

.layout {
  margin-top: var(--s-8);
}

@media (min-width: 56rem) {
  .layout {
    display: grid;
    grid-template-columns: 13rem minmax(0, 1fr);
    gap: var(--s-12);
    align-items: start;
  }
}

/* --- Categories ---------------------------------------------------------- */

.cat-select-label {
  display: block;
  margin-bottom: var(--s-1);
}

.cats {
  margin-bottom: var(--s-8);
}

#cat-select {
  display: block;
  width: 100%;
  min-height: 48px;
  padding: var(--s-2) var(--s-4);
  font: inherit;
  font-size: max(16px, var(--fs-body-s));
  color: var(--line);
  background: var(--deep);
  border: 1px solid var(--rule);
  border-radius: 0;
}

.cat-list {
  display: none;
  list-style: none;
  padding: 0;
  border-top: 1px solid var(--rule-faint);
}

@media (min-width: 56rem) {
  .cats {
    margin-bottom: 0;
    position: sticky;
    top: calc(var(--header-h) + var(--s-6));
    max-height: calc(100dvh - var(--header-h) - var(--s-12));
    overflow-y: auto;
  }

  .cat-select-label,
  #cat-select {
    display: none;
  }

  .cat-list {
    display: block;
  }
}

.cat-list li {
  border-bottom: 1px solid var(--rule-faint);
}

.cat-list a {
  display: flex;
  justify-content: space-between;
  gap: var(--s-2);
  padding-block: var(--s-2);
  font-size: var(--fs-body-s);
  color: var(--muted);
  text-decoration: none;
}

.cat-list a:hover {
  color: var(--line);
}

.cat-list a[aria-current='page'] {
  color: var(--line);
  font-weight: 600;
}

.cat-list .n {
  font-variant-numeric: tabular-nums;
}

.cat-list .group-start {
  margin-top: var(--s-6);
  border-top: 1px solid var(--rule-faint);
}

/* --- Views --------------------------------------------------------------- */

.view {
  min-width: 0;
}

/* Pages that open straight onto rows get a top rule; grouped pages have their h2 rule. */
.view > .cmd:first-child,
.pb-list,
.steps {
  border-top: 1px solid var(--rule-faint);
}

.group + .group {
  margin-top: var(--s-12);
}

.group > h2 {
  padding-bottom: var(--s-3);
  border-bottom: 1px solid var(--rule-faint);
}

.group > h2 a {
  text-decoration: none;
}

.group > h2 .n {
  margin-left: var(--s-2);
  font-size: var(--fs-micro);
  font-weight: 600;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}

.empty {
  padding-block: var(--s-8);
  color: var(--muted);
}

/* --- Command rows -------------------------------------------------------- */

.cmd {
  padding-block: var(--s-6);
  border-bottom: 1px solid var(--rule-faint);
  /* Hundreds of rows: let the browser skip laying out the ones off-screen. */
  content-visibility: auto;
  contain-intrinsic-size: auto 14rem;
}

.cmd:target {
  border-left: 2px solid var(--line);
  padding-left: var(--s-4);
  margin-left: calc(-1 * var(--s-4) - 2px);
}

.cmd h3 {
  font-size: var(--fs-body);
  font-weight: 600;
  line-height: 1.4;
}

.cmd h3 a {
  text-decoration: none;
}

.cmd h3 a:hover {
  text-decoration: underline;
  text-decoration-color: var(--rule);
}

.cmd .desc {
  margin-top: var(--s-1);
  font-size: var(--fs-body-s);
  color: var(--muted);
  max-width: 70ch;
}

.caution {
  margin-top: var(--s-3);
  padding-left: var(--s-3);
  border-left: 2px solid var(--signal);
  font-size: var(--fs-body-s);
  max-width: 70ch;
}

.caution strong {
  color: var(--signal);
  font-weight: 700;
}

.note {
  margin-top: var(--s-2);
  font-size: var(--fs-body-s);
  color: var(--muted);
  max-width: 70ch;
}

.code {
  margin-top: var(--s-3);
  padding: var(--s-3) var(--s-4);
  background: var(--deep);
  border: 1px solid var(--rule);
  color: var(--line);
  font-size: var(--fs-body-s);
  line-height: 1.6;
  /* Wrap long commands rather than scroll: on a phone, sideways scrolling hides flags. */
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.code .w {
  display: inline-block;
  max-width: 100%;
}

.ph {
  color: var(--muted);
  text-decoration: underline dotted var(--rule);
  text-underline-offset: 0.2em;
}

.ph.filled {
  color: var(--line);
  text-decoration: underline solid var(--rule);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--s-2);
  margin-top: var(--s-3);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: var(--s-2) var(--s-4);
  font: inherit;
  font-size: var(--fs-micro);
  font-weight: 600;
  color: var(--line);
  background: transparent;
  border: 1px solid var(--rule);
  border-radius: 0;
  text-decoration: none;
  cursor: pointer;
}

.btn:hover {
  border-color: var(--line);
}

.btn[aria-expanded='true'] {
  border-color: var(--line);
}

.tags {
  margin-left: auto;
  font-weight: 400;
}

@media (max-width: 34rem) {
  .tags {
    flex-basis: 100%;
    margin-left: 0;
  }
}

.fill {
  margin-top: var(--s-3);
  padding: var(--s-4);
  border: 1px solid var(--rule-faint);
}

.fill-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(14rem, 1fr));
  gap: var(--s-3) var(--s-4);
}

.fill label {
  display: block;
}

.fill label span {
  display: block;
  margin-bottom: var(--s-1);
  font-family: var(--font-mono);
}

.fill input {
  display: block;
  width: 100%;
  min-height: 44px;
  padding: var(--s-2) var(--s-3);
  font-family: var(--font-mono);
  font-size: 16px;
  color: var(--line);
  background: var(--deep);
  border: 1px solid var(--rule);
  border-radius: 0;
}

.fill p {
  margin-top: var(--s-3);
}

/* --- Playbooks ----------------------------------------------------------- */

.pb-list {
  list-style: none;
  padding: 0;
}

.pb-list li {
  padding-block: var(--s-6);
  border-bottom: 1px solid var(--rule-faint);
}

.pb-list h2 {
  font-size: var(--fs-body);
  font-weight: 600;
}

.pb-list p {
  margin-top: var(--s-1);
  font-size: var(--fs-body-s);
  color: var(--muted);
}

.steps {
  list-style: none;
  padding: 0;
  counter-reset: step;
}

.steps > li {
  counter-increment: step;
  position: relative;
  padding: var(--s-6) 0 var(--s-6) 2.5rem;
  border-bottom: 1px solid var(--rule-faint);
}

.steps > li::before {
  content: counter(step);
  position: absolute;
  left: 0;
  top: var(--s-6);
  font-weight: 700;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}

.steps .step-text {
  max-width: 70ch;
}

.steps .ref {
  margin-top: var(--s-2);
}

/* A command inside a step is part of the step, not a row of its own. */
.steps .cmd {
  padding-block: 0;
  border-bottom: 0;
  content-visibility: visible;
}

.steps .cmd h3 {
  font-size: var(--fs-body-s);
}

/* --- Without JavaScript ----------------------------------------------------
   Everything still reads; the controls that need a script are hidden, and the
   category list replaces the select on phones. */

.noscript {
  margin-top: var(--s-4);
}

@media (scripting: none) {
  .search,
  .actions .btn,
  .cat-select-label,
  #cat-select {
    display: none;
  }

  .cat-list {
    display: block;
  }
}

/* --- Motion -------------------------------------------------------------- */

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}