/* The landing page wears the sheet's own clothes: white paper, black ink, the sheet's two
   typefaces, and colour only where a runner colours something in (D-051). */

@font-face {
  font-family: "Libertinus Serif";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url(fonts/libertinus-serif-latin-400-normal.woff2) format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329,
    U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "Libertinus Serif";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url(fonts/libertinus-serif-latin-ext-400-normal.woff2) format("woff2");
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329,
    U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: "Libertinus Serif";
  font-style: italic;
  font-weight: 400;
  font-display: swap;
  src: url(fonts/libertinus-serif-latin-400-italic.woff2) format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329,
    U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "Libertinus Serif";
  font-style: italic;
  font-weight: 400;
  font-display: swap;
  src: url(fonts/libertinus-serif-latin-ext-400-italic.woff2) format("woff2");
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329,
    U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: "Libertinus Serif";
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url(fonts/libertinus-serif-latin-600-normal.woff2) format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329,
    U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "Libertinus Serif";
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url(fonts/libertinus-serif-latin-ext-600-normal.woff2) format("woff2");
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329,
    U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: "DejaVu Sans Mono";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url(fonts/dejavu-mono-latin-400-normal.woff2) format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329,
    U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
/* Czech letters for code such as race names; a subset of DejaVu Sans Mono 2.37 (same licence). */
@font-face {
  font-family: "DejaVu Sans Mono";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url(fonts/dejavu-mono-latin-ext-400-normal.woff2) format("woff2");
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329,
    U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: "DejaVu Sans Mono";
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url(fonts/dejavu-mono-latin-700-normal.woff2) format("woff2");
}

:root {
  /* The sheet: paper, ink, its grey rules and fills (D-048). */
  --paper: #ffffff;
  --ink: #000000;
  --pencil: #5c5c5c; /* secondary text, the sheet's grey week numbers */
  --rule: #b3b3b3;
  --header-fill: #e6e6e6; /* the sheet's 90 % grey */
  --band-fill: #f0f0f0; /* the sheet's 94 % grey */
  /* The runner's markers, as on the 2026 reference sheet. */
  --easy: #a6dc86;
  --quality: #ffe45c;
  --long: #9fcbf2;
  --event: #e23b2e;
  --low: #f4a196; /* red, light enough to fill a row of boxes */

  --serif: "Libertinus Serif", "Iowan Old Style", "Palatino Linotype", Georgia, serif;
  --mono: "DejaVu Sans Mono", Menlo, Consolas, monospace;

  /* A 1.25 scale on an 19 px serif body. */
  --step--1: 0.84rem;
  --step-0: 1.1875rem;
  --step-1: 1.48rem;
  --step-2: 1.85rem;
  --step-4: clamp(2.4rem, 1.6rem + 3.4vw, 3.9rem);

  --measure: 36rem;
  --gutter: clamp(1.25rem, 5vw, 4.5rem);
}

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

html {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--serif);
  font-size: 100%;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-size: var(--step-0);
  line-height: 1.55;
  font-kerning: normal;
  font-variant-numeric: oldstyle-nums proportional-nums;
}

a {
  color: inherit;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}
a:hover {
  text-decoration-thickness: 2px;
}
:focus-visible {
  outline: 2px solid var(--ink);
  outline-offset: 3px;
}

.page {
  padding: 0 var(--gutter);
}

/* ---------------------------------------------------------------- masthead */

.masthead {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  padding: 1.5rem 0 0;
  font-size: var(--step--1);
}
.masthead .name {
  font-weight: 600;
  text-decoration: none;
}

/* ---------------------------------------------------------------- hero */

.hero {
  padding: clamp(3rem, 9vw, 7rem) 0 0;
}
h1 {
  max-width: 13em;
  margin: 0;
  font-size: var(--step-4);
  font-weight: 400;
  line-height: 1.04;
  letter-spacing: -0.012em;
  font-variant-numeric: lining-nums;
}
.lede {
  max-width: var(--measure);
  margin: 1.6rem 0 0;
  font-size: var(--step-1);
  line-height: 1.45;
}

/* What a newcomer needs to bring, said before anything else. */
.needs {
  max-width: var(--measure);
  margin: 1.1rem 0 0;
  font-size: var(--step-0);
  color: var(--pencil);
}
.needs a {
  color: var(--ink);
}

/* ---------------------------------------------------------------- the sheet */

.sheet-figure {
  margin: clamp(2.5rem, 6vw, 4.5rem) 0 0;
}
.sheet-scroll {
  overflow-x: auto;
  /* The sheet keeps the PDF's proportions and scrolls on narrow screens. */
  padding: 0 0 0.75rem;
}
.sheet {
  border-collapse: collapse;
  font-family: var(--mono);
  font-size: 0.8125rem;
  line-height: 1;
  font-variant-numeric: normal;
  white-space: nowrap;
}
/* The frame, as on the sheet: around the table, not around the note column. */
.sheet thead th:not(.note) {
  border-top: 1.5px solid var(--ink);
}
.sheet .month {
  border-left: 1.5px solid var(--ink);
}
.sheet .end {
  border-right: 1.5px solid var(--ink);
}
.sheet tbody tr:last-child > :not(.note),
.sheet .reaches-end {
  border-bottom: 1.5px solid var(--ink);
}
.sheet th,
.sheet td {
  height: 1.9rem;
  padding: 0 0.45rem;
  border: 1px solid var(--rule);
  font-weight: 400;
  text-align: left;
}
.sheet thead th {
  background: var(--header-fill);
  border-bottom: 1.5px solid var(--ink);
  text-align: center;
}
.sheet .month,
.sheet .phase {
  width: 1.7rem;
  padding: 0;
  background: var(--band-fill);
  text-align: center;
  vertical-align: middle;
}
.sheet .month span,
.sheet .phase span {
  display: inline-block;
  writing-mode: vertical-rl;
  transform: rotate(180deg);
}
.sheet .week {
  color: var(--pencil);
  text-align: right;
}
.sheet .group {
  border-left: 1.2px solid var(--ink);
}
.sheet .note {
  border: 0;
  padding-left: 0.6rem;
  color: var(--pencil);
  font-size: 0.75rem;
  background: var(--paper);
}
.sheet thead .note {
  background: var(--paper);
  border-bottom: 0;
}

/* A day cell is a button: press it to colour the day. */
.sheet .day {
  padding: 0;
  text-align: center;
}
.day button {
  position: relative;
  width: 2.35rem;
  height: 100%;
  min-height: 1.9rem;
  padding: 0;
  border: 0;
  background: none;
  color: inherit;
  font: inherit;
  cursor: pointer;
}
.day button.race {
  font-weight: 700;
}
/* The colour is laid on like a marker stroke: a little short of the lines, a little crooked. */
.day button::before {
  content: "";
  position: absolute;
  inset: 2px 1px 3px 2px;
  border-radius: 1px 4px 2px 6px / 3px 2px 5px 2px;
  background: var(--marker, transparent);
  transform: rotate(var(--tilt, 0deg));
  mix-blend-mode: multiply;
}
.day button span {
  position: relative;
}
.day button[data-run="easy"] {
  --marker: var(--easy);
}
.day button[data-run="quality"] {
  --marker: var(--quality);
}
.day button[data-run="long"] {
  --marker: var(--long);
}
/* Something unexpected (illness, a trip): a red triangle in the corner. */
.day button[data-event]::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  border-style: solid;
  border-width: 0 0.6rem 0.6rem 0;
  border-color: transparent var(--event) transparent transparent;
}

/* The gauge: one box per km, a heavier line every 10 km. */
.sheet .gauge {
  padding: 0;
}
.gauge-track {
  display: grid;
  grid-template-columns: repeat(var(--boxes), 0.36rem);
  height: 1.9rem;
  cursor: pointer;
}
.gauge-track span {
  border-right: 1px solid #d4d4d4;
}
.gauge-track span:nth-child(10n) {
  border-right-color: var(--ink);
}
.gauge-track span:last-child {
  border-right: 0;
}
/* Logged km: green from 80 % of the plan, yellow from 50 %, red below. */
.gauge-track[data-level="full"] span.done {
  background: var(--easy);
}
.gauge-track[data-level="part"] span.done {
  background: var(--quality);
}
.gauge-track[data-level="low"] span.done {
  background: var(--low);
}
.gauge-head {
  display: grid;
  grid-template-columns: repeat(var(--labels), calc(0.36rem * 10));
  font-size: 0.6875rem;
}
.gauge-head span {
  text-align: right;
  padding-right: 2px;
}

.sheet-paper {
  display: inline-block;
}
.sheet-scroll.collapsed {
  max-height: var(--collapsed-height);
  overflow-y: hidden;
  -webkit-mask-image: linear-gradient(to bottom, #000 calc(100% - 2.5rem), transparent);
  mask-image: linear-gradient(to bottom, #000 calc(100% - 2.5rem), transparent);
}

/* The sheet's footer: codes and dates in the mono, words in the serif, a thin rule between. */
.sheet-footer {
  padding: 0.9rem 0 0;
  font-size: 0.8125rem;
  line-height: 1.5;
  text-align: center;
  white-space: normal;
}
.sheet-footer p {
  margin: 0 0 0.3rem;
  hyphens: manual;
}
.sheet-footer .entry {
  display: inline-block;
}
.sheet-footer .data {
  font-family: var(--mono);
  font-size: 0.88em;
}
.sheet-footer b.data {
  font-weight: 700;
}
.sheet-footer .separator {
  display: inline-block;
  height: 0.75em;
  margin: 0 0.55rem;
  border-left: 1px solid var(--ink);
}

.sheet-toggle {
  margin: 0.9rem 0 0;
  padding: 0.35rem 0.8rem;
  border: 1.5px solid var(--ink);
  border-radius: 0;
  background: var(--paper);
  color: var(--ink);
  font: inherit;
  font-size: var(--step--1);
  cursor: pointer;
}
.sheet-toggle:hover {
  background: var(--band-fill);
}

.sheet-caption {
  max-width: var(--measure);
  margin: 1rem 0 0;
  font-size: var(--step--1);
  font-style: italic;
  line-height: 1.5;
}
.sheet-caption a {
  font-style: normal;
}
.sheet-fallback {
  max-width: var(--measure);
  font-size: var(--step--1);
}

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

main section {
  max-width: var(--measure);
  padding: clamp(3.5rem, 8vw, 6rem) 0 0;
}
h2 {
  margin: 0 0 1rem;
  font-size: var(--step-2);
  font-weight: 600;
  line-height: 1.15;
}
h3 {
  margin: 2rem 0 0.4rem;
  font-size: var(--step-0);
  font-weight: 600;
}
p {
  margin: 0 0 1rem;
  hyphens: auto;
}
strong {
  font-weight: 600;
}

/* The session codes, as the sheet prints them. */
.codes {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 0.35rem 1.25rem;
  margin: 1.25rem 0 1.5rem;
}
.codes dt {
  font-family: var(--mono);
  font-size: 0.875rem;
  line-height: 1.9;
}
.codes dd {
  margin: 0;
}

.markers {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.4rem;
  margin: 0 0 1rem;
  padding: 0;
  list-style: none;
  font-size: var(--step--1);
}
.markers li::before {
  content: "";
  display: inline-block;
  width: 1.1em;
  height: 0.75em;
  margin-right: 0.45em;
  border-radius: 2px 3px 2px 4px;
  background: var(--swatch);
  vertical-align: -0.02em;
  transform: rotate(-2deg);
}
.markers .easy {
  --swatch: var(--easy);
}
.markers .quality {
  --swatch: var(--quality);
}
.markers .long {
  --swatch: var(--long);
}
.markers .low {
  --swatch: var(--low);
}
.markers .event::before {
  width: 0;
  height: 0;
  border-radius: 0;
  border-style: solid;
  border-width: 0 0.75em 0.75em 0;
  border-color: transparent var(--event) transparent transparent;
  background: none;
  transform: none;
}

/* The printed rules, quoted as the sheet sets them. */
.rule-quote {
  margin: 1.25rem 0 1.5rem;
  padding: 0 0 0 1.1rem;
  border-left: 1.5px solid var(--ink);
  font-style: italic;
}
.rule-quote p {
  margin: 0 0 0.3rem;
}

/* Exceptions to the main path, set smaller. */
.aside {
  color: var(--pencil);
  font-size: var(--step--1);
}

.changes {
  margin: 0 0 1rem;
  padding: 0;
  list-style: none;
}
.changes li {
  margin: 0 0 0.55rem;
}

/* Making a plan is a real sequence, so it is numbered. */
.steps {
  margin: 1.5rem 0 0;
  padding: 0;
  list-style: none;
  counter-reset: step;
}
.steps > li {
  counter-increment: step;
  position: relative;
  padding: 0 0 1.75rem 2.4rem;
}
.steps > li::before {
  content: counter(step);
  position: absolute;
  left: 0;
  top: -0.05em;
  font-size: var(--step-1);
  line-height: 1.2;
  font-variant-numeric: lining-nums;
}
.steps h3 {
  margin: 0 0 0.4rem;
  font-size: var(--step-1);
  font-weight: 400;
  line-height: 1.2;
}

pre,
code {
  font-family: var(--mono);
  font-size: 0.8125rem;
}
pre {
  margin: 0.75rem 0 1rem;
  padding: 0.9rem 1rem;
  overflow-x: auto;
  border: 1px solid var(--rule);
  border-left: 1.5px solid var(--ink);
  line-height: 1.55;
  font-variant-numeric: normal;
}
pre .comment {
  color: var(--pencil);
}
p code,
li code {
  font-size: 0.85em;
}

/* ---------------------------------------------------------------- reference */

/* Everything you can set: folded away so the page stays short, complete when opened. */
.reference details > summary {
  display: block;
  cursor: pointer;
  list-style: none;
}
.reference details > summary::-webkit-details-marker {
  display: none;
}
/* Three folds, one per moment of need: writing the file, understanding the plan, reading a warning. */
.reference details {
  border-top: 1px solid var(--rule);
}
.reference details:last-of-type {
  border-bottom: 1px solid var(--rule);
}
.reference summary {
  padding: 0.85rem 0;
}
.reference summary h3 {
  display: inline;
  margin: 0;
  font-size: var(--step-1);
  font-weight: 400;
}
.reference summary h3::after {
  content: "+";
  display: inline-block;
  margin-left: 0.45em;
}
.reference details[open] summary h3::after {
  content: "−";
}
.reference details[open] {
  padding-bottom: 1.5rem;
}
.reference h4 {
  margin: 2rem 0 0.5rem;
  font-size: var(--step-0);
  font-weight: 600;
}

.fields {
  margin: 0 0 1rem;
}
.fields dt {
  margin: 1.1rem 0 0.2rem;
}
.fields dt span {
  margin-left: 0.4rem;
  color: var(--pencil);
  font-size: var(--step--1);
  font-style: italic;
}
.fields dd {
  margin: 0;
}
.fields.compact {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 0.4rem 1.1rem;
}
.fields.compact dt {
  margin: 0;
}

.table-scroll {
  overflow-x: auto;
  margin: 0 0 1rem;
}
.defaults {
  border-collapse: collapse;
  font-size: var(--step--1);
  font-variant-numeric: lining-nums tabular-nums;
}
.defaults th,
.defaults td {
  padding: 0.45rem 0.9rem 0.45rem 0;
  border-bottom: 1px solid var(--rule);
  text-align: left;
  vertical-align: bottom;
}
.defaults thead th {
  border-bottom: 1.5px solid var(--ink);
  font-weight: 600;
}
.defaults tbody th {
  font-weight: 400;
}
.defaults td {
  text-align: right;
}

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

.colophon {
  max-width: var(--measure);
  margin: clamp(4rem, 9vw, 7rem) 0 0;
  padding: 1.25rem 0 3rem;
  border-top: 1.5px solid var(--ink);
  font-size: var(--step--1);
  line-height: 1.6;
}
.colophon p {
  margin: 0 0 0.4rem;
}

@media (max-width: 40rem) {
  body {
    font-size: 1.0625rem;
  }
  .steps > li {
    padding-left: 1.9rem;
  }
}

@media print {
  .sheet-figure,
  .masthead a[hreflang] {
    display: none;
  }
}

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

/* Short code in running text stays on one line; code blocks keep their lines. */
:not(pre) > code {
  white-space: nowrap;
}

/* After the numbered steps, the section's other headings take the steps' size. */
section[aria-labelledby="make"] > h3 {
  margin: 2.5rem 0 0.5rem;
  font-size: var(--step-1);
  font-weight: 400;
  line-height: 1.2;
}