/* Keep The Lights On · keepthelightson.dev
   Base layout, document and assessment components. Shared styles and the final
   light/dark palette are layered in field-guide.css and eu.css. */

/* Tokens */

:root {
  --paper:      #f7f4ee;
  --paper-sunk: #efeae1;
  --paper-edge: #e2dbcf;
  --ink:        #14120e;
  --ink-soft:   #4a453c;
  --ink-faint:  #6b6456;
  --rule:       #d6cec0;

  --accent:     #b45309;
  --accent-lit: #d97706;
  --accent-wash:#fdf1e0;

  --alarm:      #9f1239;

  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, "Book Antiqua",
           Georgia, "Times New Roman", serif;
  --sans:  ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto,
           "Helvetica Neue", Arial, sans-serif;
  --mono:  ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas,
           "Liberation Mono", monospace;

  --measure: 34rem;
  --gutter: clamp(1.25rem, 5vw, 5rem);
  --wide: 78rem;

  --text-small: .875rem;
  --text-body: clamp(1rem, .95rem + .2vw, 1.0625rem);
  --step--1: var(--text-small);
  --step-0:  clamp(1.02rem, 0.98rem + 0.2vw, 1.15rem);
  --step-1:  clamp(1.3rem, 1.2rem + 0.5vw, 1.6rem);
  --step-2:  clamp(1.7rem, 1.45rem + 1.2vw, 2.4rem);
  --step-3:  clamp(2.2rem, 1.6rem + 2.9vw, 4rem);
  --step-4:  clamp(2.8rem, 1.6rem + 5.6vw, 6.4rem);

  --ease: cubic-bezier(0.2, 0.7, 0.3, 1);
  --dur: 480ms;
}

/* Base dark-state tokens; eu.css supplies the published palette. */
[data-power="out"] {
  --paper:      #0a0b0c;
  --paper-sunk: #101214;
  --paper-edge: #1c1f22;
  --ink:        #ffb454;
  --ink-soft:   #c98a3f;
  --ink-faint:  #a8804a;
  --rule:       #2a2118;

  --accent:     #ffd08a;
  --accent-lit: #ffe6bd;
  --accent-wash:#16120c;

  --alarm:      #ff6b6b;

  --serif: var(--mono);
  --sans:  var(--mono);
  --dur: 0ms;
}

/* Structure */

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

/* Anchor targets must clear the sticky header. */
[id] { scroll-margin-top: 5.5rem; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: var(--step-0);
  line-height: 1.65;
  font-kerning: normal;
  text-rendering: optimizeLegibility;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
}

/* The flicker as the mains drop out. Runs once, on the transition only. */
body.is-cutting { animation: cut 620ms steps(1, end); }
@keyframes cut {
  0%, 100% { opacity: 1; }
  8%  { opacity: 0.06; }
  14% { opacity: 0.9; }
  22% { opacity: 0.04; }
  38% { opacity: 0.7; }
  46% { opacity: 0.02; }
  70% { opacity: 0.85; }
}

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

.measure { max-width: var(--measure); }

/* Type */

h1, h2, h3, h4 {
  font-family: var(--serif);
  font-weight: 600;
  line-height: 1.08;
  letter-spacing: -0.021em;
  margin: 0 0 0.5em;
  text-wrap: balance;
}

h1 { font-size: var(--step-4); letter-spacing: -0.035em; }
h2 { font-size: var(--step-3); letter-spacing: -0.028em; }
h3 { font-size: var(--step-1); }

p { margin: 0 0 1.15em; max-width: var(--measure); text-wrap: pretty; }

a {
  color: inherit;
  text-decoration-color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}
a:hover { text-decoration-thickness: 2px; }

strong { font-weight: 650; }

code, .mono, kbd {
  font-family: var(--mono);
  font-size: max(var(--text-small), .9em);
  font-variant-numeric: tabular-nums;
}

.lede {
  font-size: var(--step-1);
  line-height: 1.42;
  color: var(--ink-soft);
  max-width: 40rem;
}

.eyebrow {
  font-family: var(--mono);
  font-size: var(--step--1);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin: 0 0 1.4rem;
}

.num {
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum" 1;
}

/* Navigation */

.top {
  position: sticky;
  top: 0;
  z-index: 60;
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--rule);
}
[data-power="out"] .top { backdrop-filter: none; background: var(--paper); }

.top__in {
  display: flex;
  align-items: baseline;
  gap: 2rem;
  min-height: 4rem;
  padding-block: 0.9rem;
}

.brand {
  font-family: var(--serif);
  font-size: 1.02rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  text-decoration: none;
  white-space: nowrap;
}
.brand span { color: var(--accent); }

.top nav {
  margin-left: auto;
  display: flex;
  gap: 1.6rem;
  flex-wrap: wrap;
  font-size: 0.9rem;
}
.top nav a { text-decoration: none; color: var(--ink-soft); }
.top nav a:hover, .top nav a[aria-current="page"] { color: var(--ink); }
.top nav a[aria-current="page"] { text-decoration: underline; text-decoration-color: var(--accent); text-underline-offset: 0.35em; }

/* Components */

.rule { border: 0; border-top: 1px solid var(--rule); margin: 0; }

.grid { display: grid; gap: clamp(1.5rem, 3vw, 3rem); }
.grid--2 { grid-template-columns: repeat(auto-fit, minmax(19rem, 1fr)); }
.grid--3 { grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr)); }

section { padding-block: clamp(3.5rem, 8vw, 8rem); }

.card {
  padding: 1.6rem;
  border: 1px solid var(--rule);
  background: var(--paper-sunk);
  border-radius: 2px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.8rem 1.4rem;
  background: var(--ink);
  color: var(--paper);
  border: 1px solid var(--ink);
  border-radius: 2px;
  font-family: var(--mono);
  font-size: var(--text-small);
  letter-spacing: 0.09em;
  text-transform: uppercase;
  text-decoration: none;
  cursor: pointer;
  transition: opacity 160ms var(--ease);
}
.btn:hover { opacity: 0.86; }
.btn--ghost { background: transparent; color: var(--ink); border-color: var(--rule); }

/* Motion */

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* Utilities */

.skip {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--ink);
  color: var(--paper);
  padding: 0.75rem 1.25rem;
  z-index: 200;
}
.skip:focus { left: 0; }

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

/* Home */

.esrb {
  background: var(--ink);
  color: var(--paper);
  padding-block: clamp(3rem, 7vw, 6rem);
}
[data-power="out"] .esrb {
  background: var(--paper-sunk);
  color: var(--ink);
  border-block: 1px solid var(--rule);
}

.esrb .eyebrow { color: var(--accent-lit); }
[data-power="out"] .esrb .eyebrow { color: var(--ink-soft); }

.esrb__in { max-width: 48rem; }

.esrb__quote { margin: 0 0 1.75rem; }
.esrb__quote p {
  font-family: var(--serif);
  font-size: var(--step-2);
  line-height: 1.28;
  letter-spacing: -0.018em;
  max-width: none;
  margin: 0;
  text-wrap: pretty;
}
.esrb__quote strong { font-weight: 600; color: var(--accent-lit); }
[data-power="out"] .esrb__quote strong { color: var(--ink); }
.esrb__quote .mark { opacity: 0.45; }

.esrb__cite,
.esrb__note {
  font-size: var(--step--1);
  line-height: 1.6;
  max-width: 44rem;
  opacity: 0.72;
}
.esrb__cite { margin-bottom: 1.25rem; font-family: var(--mono); }
.esrb__note { margin: 0; opacity: 0.85; }

/* Principles */

.principles__list {
  list-style: none;
  counter-reset: p;
  margin: clamp(2rem, 4vw, 3rem) 0 2rem;
  padding: 0;
  display: grid;
  gap: 0;
  max-width: 46rem;
}
.principles__list li {
  counter-increment: p;
  display: grid;
  grid-template-columns: 3.5rem 1fr;
  gap: 0 1rem;
  padding-block: 1.4rem;
  border-top: 1px solid var(--rule);
}
.principles__list li:last-child { border-bottom: 1px solid var(--rule); }
/* The counter spans every row of column 1; a second child would otherwise wrap into it. */
.principles__list li::before {
  content: counter(p, decimal-leading-zero);
  font-family: var(--mono);
  font-size: var(--step--1);
  color: var(--accent);
  padding-top: 0.35em;
  grid-column: 1;
  grid-row: 1 / -1;
}
.principles__list li > * { grid-column: 2; }
.principles__list h3 { margin: 0 0 0.3rem; font-size: var(--step-1); }
.principles__list p { margin: 0; color: var(--ink-soft); font-size: 0.98rem; }

.principles__more { margin-top: 1.75rem; color: var(--ink-soft); }

.risks__grid { margin-top: clamp(2rem, 5vw, 3.5rem); }

.risk__src {
  font-size: var(--text-small);
  line-height: 1.5;
  letter-spacing: 0.02em;
  color: var(--ink-faint) !important;
  border-top: 1px solid var(--rule);
  padding-top: 0.7rem;
  margin-top: 1rem !important;
}
.risk__src cite { font-style: italic; }

.quote-fr { font-style: italic; white-space: nowrap; }

.foot__in { display: flex; flex-wrap: wrap; gap: 0.5rem 2rem; justify-content: space-between; }

/* Page head */

.page-head { padding-block: clamp(3rem, 7vw, 6rem) clamp(2rem, 4vw, 3rem); }
.page-head__h1 { font-size: var(--step-3); margin-bottom: 1.5rem; }

/* Bands */

.cta-band { padding-block: clamp(3rem, 7vw, 6rem); }
.cta-band p:last-child { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 1.75rem; }

/* Callouts */

.callout {
  border: 1px solid var(--rule);
  border-left: 3px solid var(--accent);
  background: var(--paper-sunk);
  padding: 1.3rem 1.4rem;
  margin-bottom: 1.25rem;
}
.callout p:last-child { margin-bottom: 0; }
.callout__label {
  font-size: var(--text-small);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.6rem !important;
}
.callout--quiet { border-left-color: var(--rule); }
.callout--quiet .callout__label { color: var(--ink-faint); }
.callout--wide { max-width: none; margin-top: 2rem; }
.callout__caveat { font-size: 0.9rem; color: var(--ink-faint); }

.foot {
  border-top: 1px solid var(--rule);
  padding-block: 2.5rem 7rem;
  font-size: var(--step--1);
  color: var(--ink-faint);
}
.foot p { max-width: none; margin: 0; }

/* Narrow screens */

@media (max-width: 46rem) {
  /* Base mobile navigation; field-guide.css supplies the menu layout. */
  .top__in {
    display: block;
    padding-block: 0.75rem;
  }

  .top nav {
    margin-block: 0.6rem 0;
    margin-inline: calc(var(--gutter) * -1);
    padding-inline: var(--gutter);
    gap: 1.1rem;
    flex-wrap: nowrap;
    overflow-x: auto;
    scrollbar-width: none;
    -webkit-overflow-scrolling: touch;
    scroll-snap-type: x proximity;
  }
  .top nav::-webkit-scrollbar { display: none; }
  .top nav a { white-space: nowrap; scroll-snap-align: start; }

}

.subhead {
  font-size: var(--step-1);
  margin: clamp(2.25rem, 4vw, 3rem) 0 0.9rem;
  max-width: 34rem;
}

[hidden] { display: none !important; }

/* Self-assessment */
.assess { padding-block: clamp(2rem, 5vw, 4rem); }
.assess-wrap { max-width: 58rem; }
.assess-intro { border-left: 4px solid var(--accent); padding: 0.1rem 1.3rem; margin-bottom: 2.5rem; }
.assess-intro p { max-width: none; }
.field__hint { font-size: 1rem; color: var(--ink-soft); margin: 0.8rem 0 1.5rem; max-width: none; line-height: 1.6; }
.assess-progress { padding: 1.1rem 1.4rem; background: var(--paper-sunk); border: 1px solid var(--rule); border-radius: 4px; }
.assess-progress > p:first-child { font-weight: 650; margin: 0 0 0.45rem; }
.assess-progress .field__hint { margin-bottom: 0; }
.assess-progress progress { display: block; width: 100%; height: 7px; border: 0; border-radius: 0; accent-color: var(--accent); background: var(--rule); }
.assess-progress progress::-webkit-progress-bar { background: var(--rule); }
.assess-progress progress::-webkit-progress-value { background: var(--accent); }
.assess-progress progress::-moz-progress-bar { background: var(--accent); }
.assess-section { margin-top: 3.25rem; }
.assess-section__head { border-top: 3px solid var(--accent); padding: 1.5rem 0 1rem; }
.assess-section__head h2 { font-size: clamp(1.7rem, 3vw, 2.2rem); margin-block: 0.4rem 0.75rem; }
.assess-section__head > p { max-width: none; }
.q { border: 0; border-top: 1px solid var(--rule); margin: 1rem 0 0; padding: 1.5rem 0 1.75rem; min-width: 0; scroll-margin-top: 9rem; }
.q__legend { display: block; width: 100%; padding: 0.3rem 0; }
.q__ask { display: block; font-size: clamp(1.25rem, 2vw, 1.5rem); font-weight: 650; line-height: 1.4; text-wrap: pretty; }
.q__hint { color: var(--ink-soft); font-size: 1.04rem; line-height: 1.6; margin: 0.65rem 0 1rem; max-width: none; }
.q__opts { display: grid; gap: 0.55rem; }
.opt { display: grid; grid-template-columns: 1.2rem minmax(0, 1fr); gap: 0.8rem; align-items: start; padding: 0.8rem 1rem; border: 1px solid var(--rule); border-radius: 3px; cursor: pointer; background: var(--paper); }
.opt:hover { background: var(--paper-sunk); border-color: var(--ink-faint); }
.opt:has(input:checked) { background: var(--accent-wash); border-color: var(--accent); box-shadow: inset 3px 0 var(--accent); }
.opt input { margin: 0.28rem 0 0; width: 1.1rem; height: 1.1rem; accent-color: var(--accent); cursor: pointer; scroll-margin-top: 10rem; }
.opt input:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
.opt__t { font-size: 1.05rem; line-height: 1.55; color: var(--ink); }
.q--error { border-top: 2px solid var(--alarm); }
.assess-errors { padding: 1.2rem 1.4rem; border: 2px solid var(--alarm); margin: 1.5rem 0; scroll-margin-top: 9rem; }
.assess-errors p { font-weight: 650; }
.assess-errors li { margin-bottom: 0.45rem; }
.assess-errors a { color: var(--alarm); }
.assess-submit { border-top: 2px solid var(--accent); padding-block: 1.5rem; margin-top: 2rem; }
.assess-submit p { max-width: none; }
.assess-actions { display: flex; align-items: stretch; flex-wrap: wrap; gap: 0.85rem; }
.assess-actions .btn { min-height: 48px; text-align: center; justify-content: center; font-size: 1rem; }
.assess-actions .btn[disabled], .assess-actions .btn[aria-disabled="true"] { opacity: 0.65; cursor: default; }
.result { border: 1px solid var(--rule); border-top: 4px solid var(--accent); background: var(--paper-sunk); padding: clamp(1.3rem, 4vw, 2.4rem); border-radius: 3px; }
.result h2 { font-size: clamp(1.7rem, 4vw, 2.4rem); line-height: 1.25; scroll-margin-top: 9rem; }
.result__context { font-size: 1.05rem; color: var(--ink-soft); overflow-wrap: anywhere; }
.result__verdict { font-size: 1.2rem; line-height: 1.6; color: var(--ink); }
.result__next { font-size: 1.08rem; font-weight: 600; }
.result__summary { border-top: 1px solid var(--rule); padding-top: 1rem; font-size: 1rem; }
.result__foot { color: var(--ink-soft); font-size: 1rem; line-height: 1.6; margin-bottom: 0; }
.result__actions { margin-top: 1.6rem; }
.copy-note { font-size: 1rem; color: var(--ink-soft); min-height: 1.6em; margin: 0.7rem 0; }
.assessment-result > section { margin-top: 2.5rem; }
.assessment-result h3 { font-size: 1.6rem; }
.finding-list { list-style: none; margin: 1.25rem 0; padding: 0; display: grid; gap: 1rem; }
.finding-list li { border: 1px solid var(--rule); border-left: 4px solid var(--alarm); padding: 1.2rem 1.4rem; background: var(--paper); overflow-wrap: anywhere; }
.finding-list--note li { border-left-color: var(--accent); }
.finding-list h4 { font-size: 1.18rem; line-height: 1.4; margin: 0 0 0.7rem; }
.finding-list p { max-width: none; line-height: 1.6; }
.finding__answer, .finding__status { font-size: 1rem; color: var(--ink-soft); }
.finding__action { font-size: 1.1rem; color: var(--ink); }
.finding__refs { font-size: 1rem; margin-bottom: 0; }
.assess-answer-review, .assess-md { border-top: 1px solid var(--rule); margin-top: 2rem; padding-top: 1rem; }
.assess-answer-review summary, .assess-md summary { cursor: pointer; font-size: 1.1rem; font-weight: 600; padding-block: 0.5rem; }
.assess-answer-review dt { font-weight: 650; margin-top: 1.5rem; }
.assess-answer-review dd { margin: 0.4rem 0; color: var(--ink-soft); }
.assess-out { display: block; width: 100%; margin-top: 1rem; padding: 1rem; font: 1rem/1.6 var(--mono); color: var(--ink); background: var(--paper); border: 1px solid var(--rule); resize: vertical; }
.scoring { padding-block: 3rem; border-top: 1px solid var(--rule); }
.scoring p { max-width: none; }
@media (max-width: 40rem) {
  .assess-actions { flex-direction: column; }
  .opt { padding: 0.8rem; }
  .result { padding: 1.2rem; }
  .finding-list li { padding: 1rem; }
}
@media print {
  .assess-actions, .assess-progress, .assess-submit, .copy-note { display: none !important; }
  .assessment-result .result { break-inside: avoid; }
  .finding-list li { break-inside: avoid; }
}

.repo-url {
  font-size: 1.02rem;
  margin-bottom: 1.1rem !important;
  word-break: break-all;
}
.repo-url a { text-decoration-thickness: 2px; }

/* Source links */

/* External source links. */
.src {
  font-family: var(--mono);
  font-size: max(var(--text-small), .82em);
  white-space: nowrap;
  text-decoration-thickness: 1px;
}

/* Already monospaced and small: match the line, do not shrink again. */
.risk__src .src,
.esrb__cite .src { font-size: 1em; }