/* Unlabeled design tokens — graph paper theme.
   Light is the default palette; dark is selected, not inverted.
   Import once; style components through these variables only. */

:root {
  color-scheme: light;

  --bg: #F2F7FA;
  --gridline: #D6E5EE;
  --card: #FFFFFF;
  --ink: #22303B;
  --ink2: #5F7282;
  --ink3: #93A4B2;
  --line: #D5E0E8;
  --grid: #EAF0F4;
  --mark: #E8694A;
  --mark-soft: #E8694A2E;
  --tile: #FFFFFF;
  --tile-sel: #FDEDE7;
  --good: #2F9E63;
  --good-bg: #E2F5EA;
  --bad: #D9483F;
  --bad-bg: #FCE6E4;
  --scrim: #22303B99;
  --shadow: 0 6px 18px #22303B14;

  /* type */
  --font: "Nunito", system-ui, sans-serif;
  --fs-title: 26px;
  --fs-h2: 18px;
  --fs-body: 15px;
  --fs-small: 13px;
  --fs-eyebrow: 11px;
  --fs-tick: 10px;
  --ls-tight: -0.02em;
  --ls-eyebrow: 0.06em;

  /* shape and space */
  --radius-card: 16px;
  --radius-control: 12px;
  --radius-sheet: 20px;
  --gap: 10px;
  --gutter: 16px;
  --control-h: 46px;
  --grid-cell: 24px;

  /* motion */
  --shake: 350ms;
  --settle: 280ms;
  --rise: 220ms;
  --ease-out: cubic-bezier(0.2, 0.8, 0.2, 1);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --bg: #141C24;
    --gridline: #1F2B36;
    --card: #1D2732;
    --ink: #EAF0F5;
    --ink2: #A9B8C5;
    --ink3: #6E8090;
    --line: #2F3D4A;
    --grid: #27333F;
    --mark: #F5906F;
    --mark-soft: #F5906F33;
    --tile: #26323E;
    --tile-sel: #4A3128;
    --good: #6FD39A;
    --good-bg: #1E3A2B;
    --bad: #F28B83;
    --bad-bg: #472925;
    --scrim: #000000AA;
    --shadow: 0 6px 18px #00000040;
  }
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #141C24;
  --gridline: #1F2B36;
  --card: #1D2732;
  --ink: #EAF0F5;
  --ink2: #A9B8C5;
  --ink3: #6E8090;
  --line: #2F3D4A;
  --grid: #27333F;
  --mark: #F5906F;
  --mark-soft: #F5906F33;
  --tile: #26323E;
  --tile-sel: #4A3128;
  --good: #6FD39A;
  --good-bg: #1E3A2B;
  --bad: #F28B83;
  --bad-bg: #472925;
  --scrim: #000000AA;
  --shadow: 0 6px 18px #00000040;
}

/* Page ground: graph paper */
body {
  margin: 0;
  color: var(--ink);
  font: var(--fs-body)/1.4 var(--font);
  background-color: var(--bg);
  background-image:
    linear-gradient(var(--gridline) 1px, transparent 1px),
    linear-gradient(90deg, var(--gridline) 1px, transparent 1px);
  background-size: var(--grid-cell) var(--grid-cell);
}

@media (prefers-reduced-motion: reduce) {
  :root { --shake: 0ms; --settle: 0ms; --rise: 0ms; }
}

/* The chart library's pages (server/library.py, templates/library/). The
   server serves tokens.css first and this file after it as one stylesheet,
   and writes the hashed addresses of the fonts into the url()s below.
   Colors come from the tokens only. The look is the game's (app/src/styles)
   and the prototype's (app/prototypes/library/src/library.css). */

@font-face {
  font-family: "Nunito";
  font-style: normal;
  font-display: swap;
  font-weight: 400 600;
  src: url("/charts/static/Nunito-SemiBold-d29510adc270.ttf") format("truetype");
}

@font-face {
  font-family: "Nunito";
  font-style: normal;
  font-display: swap;
  font-weight: 700;
  src: url("/charts/static/Nunito-Bold-90c26d39cc0a.ttf") format("truetype");
}

@font-face {
  font-family: "Nunito";
  font-style: normal;
  font-display: swap;
  font-weight: 800 1000;
  src: url("/charts/static/Nunito-ExtraBold-7aa263c1fce7.ttf") format("truetype");
}

:root {
  --on-mark: #FFFFFF;
  /* The drawings come from render.py in the light palette, so they sit on
     paper of their own in both palettes. */
  --paper: #FFFFFF;
}

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

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

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

body {
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1,
h2,
h3,
p,
ul,
ol,
dl,
dd,
figure {
  margin: 0;
  padding: 0;
}

ul,
ol {
  list-style: none;
}

button {
  font: inherit;
  color: inherit;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}

a {
  color: inherit;
}

:focus {
  outline: none;
}

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

[hidden] {
  display: none !important;
}

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

.eyebrow {
  font-size: var(--fs-eyebrow);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: var(--ls-eyebrow);
  color: var(--ink3);
}

/* ---------- Buttons (the game's) ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: var(--control-h);
  min-width: 128px;
  padding: 0 20px;
  border: 0;
  border-radius: var(--radius-control);
  background: var(--mark);
  color: var(--on-mark);
  box-shadow: var(--shadow);
  font-size: 15px;
  font-weight: 800;
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
}

.btn-ghost {
  background: var(--card);
  color: var(--ink);
}

.btn-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

/* ---------- Page ---------- */

.lib-page {
  display: flex;
  flex-direction: column;
  gap: 28px;
  min-height: 100vh;
  padding: max(12px, env(safe-area-inset-top)) max(var(--gutter), env(safe-area-inset-right))
    calc(40px + env(safe-area-inset-bottom)) max(var(--gutter), env(safe-area-inset-left));
}

.lib-page > * {
  width: 100%;
  max-width: 1080px;
  margin: 0 auto;
  flex: none;
}

.lib-main {
  display: flex;
  flex-direction: column;
  gap: 32px;
  min-width: 0;
}

/* ---------- Masthead ---------- */

.lib-mast {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px 20px;
  flex-wrap: wrap;
  min-height: 44px;
}

.lib-wordmark {
  font-size: var(--fs-title);
  font-weight: 800;
  letter-spacing: var(--ls-tight);
  line-height: 1.1;
  text-decoration: none;
}

.lib-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 2px;
  margin: 0 -8px;
}

.lib-nav a {
  padding: 8px 10px;
  border-radius: var(--radius-control);
  font-size: var(--fs-small);
  font-weight: 800;
  text-decoration: none;
  color: var(--ink2);
}

.lib-nav a[aria-current="page"] {
  color: var(--ink);
  background: var(--card);
  box-shadow: var(--shadow);
}

/* ---------- Type ---------- */

.lib-h1 {
  font-size: clamp(24px, 3.2vw, 34px);
  font-weight: 800;
  letter-spacing: var(--ls-tight);
  line-height: 1.15;
  text-wrap: balance;
  overflow-wrap: anywhere;
}

.lib-h2 {
  font-size: var(--fs-h2);
  font-weight: 800;
  letter-spacing: var(--ls-tight);
}

.lib-copy {
  max-width: 64ch;
  color: var(--ink2);
}

.lib-lead {
  max-width: 64ch;
  font-size: 17px;
  font-weight: 600;
  line-height: 1.4;
}

/* The drawings' own ground: white in both palettes (see --paper). */
.lib-paper {
  display: block;
  background: var(--paper);
  border-radius: 10px;
  overflow: hidden;
}

.lib-paper img,
.lib-svg {
  display: block;
  width: 100%;
  height: auto;
}

/* ---------- Hero ---------- */

.lib-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 20px;
  align-items: center;
}

@media (min-width: 760px) {
  .lib-hero {
    grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
    gap: 36px;
  }
}

.lib-hero-text {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 12px;
}

.lib-hero-actions {
  margin-top: 6px;
}

.lib-hero-charts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.lib-hero-charts li {
  padding: 6px;
  border-radius: var(--radius-card);
  box-shadow: var(--shadow);
}

/* ---------- Strip of ways in ---------- */

.lib-strip {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
}

@media (min-width: 760px) {
  .lib-strip {
    grid-template-columns: repeat(auto-fit, minmax(0, 1fr));
  }
}

.lib-strip-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 14px;
  background: var(--card);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow);
  min-width: 0;
}

.lib-strip-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: var(--fs-small);
}

.lib-strip-list li {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  align-items: baseline;
}

.lib-strip-list a {
  text-decoration: none;
  font-weight: 700;
}

.lib-strip-list a:hover {
  text-decoration: underline;
}

.lib-strip-num {
  flex: none;
  color: var(--ink3);
  font-variant-numeric: tabular-nums;
  font-weight: 600;
}

.lib-strip-foot {
  margin-top: auto;
  font-size: var(--fs-small);
  color: var(--ink2);
}

.lib-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.lib-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 32px;
  padding: 0 12px;
  border: 2px solid var(--line);
  border-radius: 999px;
  background: var(--tile);
  color: var(--ink);
  font-size: var(--fs-small);
  font-weight: 700;
  text-decoration: none;
}

.lib-chip[aria-pressed="true"] {
  border-color: var(--mark);
  background: var(--tile-sel);
}

/* ---------- Wall ---------- */

.lib-wall {
  display: flex;
  flex-direction: column;
  gap: 16px;
  scroll-margin-top: 12px;
}

.lib-wall-head,
.lib-filter {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.lib-search input {
  width: 100%;
  max-width: 420px;
  height: 40px;
  padding: 0 14px;
  border: 2px solid var(--line);
  border-radius: var(--radius-control);
  background: var(--card);
  color: var(--ink);
  font: inherit;
}

.lib-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(230px, 100%), 1fr));
  gap: 12px;
}

.lib-tile a {
  display: flex;
  flex-direction: column;
  gap: 4px;
  height: 100%;
  padding: 10px;
  background: var(--card);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow);
  text-decoration: none;
}

.lib-tile a:hover {
  outline: 2px solid var(--mark);
}

.lib-tile-title {
  margin-top: 6px;
  font-size: 14px;
  font-weight: 700;
  line-height: 1.25;
}

.lib-tile-axes {
  display: flex;
  flex-direction: column;
  font-size: 12px;
  color: var(--ink2);
}

.lib-tile-meta {
  margin-top: auto;
  padding-top: 4px;
  font-size: var(--fs-eyebrow);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: var(--ls-eyebrow);
  color: var(--ink3);
}

.lib-wall-count {
  font-size: var(--fs-small);
}

/* ---------- The owner's sections ---------- */

.lib-prose {
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-width: 68ch;
  line-height: 1.55;
}

.lib-prose h2 {
  margin-top: 8px;
  font-size: var(--fs-h2);
  font-weight: 800;
  letter-spacing: var(--ls-tight);
}

.lib-prose h3 {
  font-size: 16px;
  font-weight: 800;
}

.lib-prose ul,
.lib-prose ol {
  padding-left: 1.4em;
}

.lib-prose ul {
  list-style: disc;
}

.lib-prose ol {
  list-style: decimal;
}

.lib-prose blockquote {
  margin: 0;
  padding-left: 14px;
  border-left: 3px solid var(--line);
  color: var(--ink2);
}

.lib-prose img {
  max-width: 100%;
  height: auto;
}

.lib-prose code {
  font-family: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.92em;
}

.lib-prose pre {
  overflow-x: auto;
}

.lib-prose table {
  border-collapse: collapse;
  display: block;
  overflow-x: auto;
}

.lib-prose th,
.lib-prose td {
  padding: 4px 10px;
  border-bottom: 1px solid var(--line);
  text-align: left;
}

/* ---------- Chart page ---------- */

.lib-chart-page {
  display: flex;
  flex-direction: column;
  gap: 16px;
  min-width: 0;
}

.lib-crumbs a {
  text-decoration: none;
}

.lib-crumbs a:hover {
  text-decoration: underline;
}

.lib-chart-box {
  display: flex;
  flex-direction: column;
  gap: var(--gap);
  width: 100%;
  max-width: 760px;
  padding: 12px;
  background: var(--card);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow);
}

.slot {
  width: 100%;
  min-height: var(--control-h);
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 12px;
  border: 2px dashed var(--ink3);
  border-radius: var(--radius-control);
  color: var(--ink3);
  font-size: var(--fs-body);
  font-weight: 700;
  line-height: 1.2;
}

.slot-eyebrow {
  flex: none;
  min-width: 26px;
  white-space: nowrap;
}

.slot-text {
  flex: 1;
  min-width: 0;
  overflow-wrap: anywhere;
}

.lib-slot[data-state="revealed"] {
  border-style: solid;
  border-color: var(--line);
  color: var(--ink);
}

.lib-figure {
  position: relative;
  touch-action: pan-y;
  background: var(--paper);
  border-radius: 10px;
}

.lib-svg-wide {
  display: none;
}

@media (min-width: 720px) {
  .lib-svg-wide {
    display: block;
  }

  .lib-svg-narrow {
    display: none;
  }
}

.lib-cross {
  stroke: #93A4B2;
  stroke-width: 1;
  stroke-dasharray: 3 3;
}

.lib-ring {
  fill: none;
  stroke: #22303B;
  stroke-width: 1.5;
}

.lib-tip {
  position: absolute;
  z-index: 1;
  display: grid;
  grid-template-columns: max-content max-content;
  gap: 2px 10px;
  align-items: baseline;
  max-width: 70vw;
  padding: 8px 10px;
  background: var(--card);
  color: var(--ink);
  border: 1px solid var(--line);
  border-radius: var(--radius-control);
  box-shadow: var(--shadow);
  font-size: var(--fs-small);
  white-space: nowrap;
  pointer-events: none;
  transform: translate(14px, -50%);
}

.lib-tip[data-side="left"] {
  transform: translate(calc(-100% - 14px), -50%);
}

.lib-tip-label {
  color: var(--ink2);
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 40vw;
}

.lib-tip strong {
  font-variant-numeric: tabular-nums;
  text-align: right;
}

/* Reveal: a <details> that works without a script. With one, the labels go
   into the slots and the list under the button is not needed. */
.lib-reveal summary {
  list-style: none;
  width: max-content;
}

.lib-reveal summary::-webkit-details-marker {
  display: none;
}

.lib-reveal[open] summary {
  background: var(--card);
  color: var(--ink);
}

.lib-reveal [data-open],
.lib-reveal[open] [data-closed] {
  display: none;
}

.lib-reveal[open] [data-open] {
  display: inline;
}

.lib-reveal-body {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 4px 12px;
  margin-top: 12px;
  font-weight: 700;
}

.lib-reveal-body dt {
  color: var(--ink3);
}

.lib-js .lib-reveal-body {
  display: none;
}

/* The story, the data and the source: closed until opened or revealed. The
   spoiler warning is an icon beside the control with a tip on hover or
   focus. */
.lib-spoiler > summary {
  cursor: pointer;
  font-weight: 800;
  width: max-content;
  max-width: 100%;
}

.lib-spoiler-icon {
  position: relative;
  display: inline-grid;
  place-items: center;
  width: 18px;
  height: 18px;
  margin-left: 6px;
  border: 1.5px solid var(--ink3);
  border-radius: 50%;
  color: var(--ink3);
  font-size: 11px;
  font-weight: 800;
  line-height: 1;
  vertical-align: 2px;
  cursor: help;
}

.lib-spoiler-icon:focus-visible {
  outline: 2px solid var(--mark);
  outline-offset: 2px;
}

.lib-spoiler-tip {
  position: absolute;
  left: 50%;
  bottom: calc(100% + 8px);
  transform: translateX(-50%);
  width: max-content;
  max-width: min(320px, 80vw);
  padding: 8px 10px;
  border-radius: 8px;
  background: var(--ink);
  color: var(--bg);
  font-size: var(--fs-small);
  font-weight: 600;
  line-height: 1.35;
  text-align: left;
  white-space: normal;
  box-shadow: var(--shadow);
  opacity: 0;
  pointer-events: none;
  transition: opacity 120ms;
  z-index: 2;
}

.lib-spoiler-icon:hover .lib-spoiler-tip,
.lib-spoiler-icon:focus-visible .lib-spoiler-tip,
.lib-spoiler-icon--shown .lib-spoiler-tip {
  opacity: 1;
}

/* On a narrow screen the tip hangs from the icon's right edge, so it stays
   inside the page whatever the line the icon lands on. */
@media (max-width: 600px) {
  .lib-spoiler-tip {
    left: auto;
    right: -8px;
    transform: none;
    max-width: calc(100vw - 48px);
  }
}

.lib-spoiler [data-open],
.lib-spoiler[open] > summary [data-closed] {
  display: none;
}

.lib-spoiler[open] > summary [data-open] {
  display: inline;
}

.lib-spoiler-body {
  margin-top: 8px;
}

/* The data table */
.lib-data summary {
  cursor: pointer;
  font-weight: 800;
}

.lib-table-wrap {
  margin-top: 10px;
  max-width: 100%;
  overflow-x: auto;
  background: var(--card);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow);
}

.lib-table {
  border-collapse: collapse;
  font-size: var(--fs-small);
  font-variant-numeric: tabular-nums;
}

.lib-table th,
.lib-table td {
  padding: 6px 14px;
  border-bottom: 1px solid var(--line);
  text-align: right;
}

.lib-table th {
  font-weight: 800;
  text-align: right;
  vertical-align: bottom;
  min-width: 8ch;
}

.lib-table tr:last-child td {
  border-bottom: 0;
}

.lib-meta {
  display: grid;
  grid-template-columns: max-content minmax(0, 1fr);
  gap: 6px 14px;
  max-width: 72ch;
  font-size: var(--fs-small);
  color: var(--ink2);
  overflow-wrap: anywhere;
}

.lib-meta dt {
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: var(--ls-eyebrow);
  font-size: var(--fs-eyebrow);
  color: var(--ink3);
  padding-top: 2px;
}

.lib-runs {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-weight: 700;
}

.lib-runs a {
  color: var(--mark);
  font-weight: 800;
}

.lib-related {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 12px;
}

/* ---------- About ---------- */

.lib-about {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  font-size: var(--fs-small);
  color: var(--ink2);
  scroll-margin-top: 12px;
}