/* Dunder Quest site. Colors come from the game: the dusk clear color, the
   gold card borders, ember orange, and the green of a cleared stage. */

@font-face {
  font-family: "Pixelify Sans";
  src: url("fonts/PixelifySans.ttf") format("truetype");
  font-weight: 400 700;
  font-display: swap;
}
@font-face {
  font-family: "VT323";
  src: url("fonts/VT323.ttf") format("truetype");
  font-display: swap;
}

:root {
  color-scheme: dark;
  --dusk: #232849;
  --dusk-2: #2c3263;
  --night: #15122a;
  --line: #4a4f86;
  --gold: #f2b544;
  --ember: #ff8a3d;
  --parchment: #f4e4c4;
  --ash: #b0a9d0;
  --moss: #7be08a;
  --zap: #ff7a7a;

  --display: "Pixelify Sans", "Atkinson Hyperlegible", system-ui, sans-serif;
  --body: "Atkinson Hyperlegible", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "Atkinson Hyperlegible Mono", ui-monospace, "Cascadia Mono", Consolas, monospace;
  --label: "VT323", ui-monospace, monospace;

  --gutter: clamp(16px, 4vw, 40px);
  --measure: 68ch;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

body {
  font-variant-ligatures: none;
  margin: 0;
  background: var(--dusk);
  color: var(--parchment);
  font: 18px/1.6 var(--body);
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; }
img[src$=".png"] { image-rendering: pixelated; }

a { color: var(--gold); text-underline-offset: 3px; }
a:hover { color: #ffd27a; }
:focus-visible { outline: 3px solid var(--gold); outline-offset: 3px; }

code, kbd { font-family: var(--mono); font-size: 0.88em; }
:not(pre) > code, kbd {
  background: var(--night);
  border: 1px solid var(--line);
  padding: 0.05em 0.35em;
  border-radius: 3px;
  white-space: nowrap;
}
td code, li code, p code { white-space: normal; overflow-wrap: anywhere; }

h1, h2, h3 { font-family: var(--display); font-weight: 600; line-height: 1.15; margin: 0 0 0.5em; }
h1 { font-size: clamp(2.2rem, 6vw, 3.6rem); letter-spacing: 0.01em; }
h2 { font-size: clamp(1.6rem, 3.6vw, 2.2rem); }
h3 { font-size: 1.3rem; }
p { margin: 0 0 1em; }

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

/* The logo, __dunder_quest__: ember underscores around the name, like a dunder method */
.wordmark i { font-style: normal; color: var(--ember); }

.skip { position: absolute; left: -999px; top: 8px; background: var(--gold); color: var(--night); padding: 8px 12px; z-index: 10; }
.skip:focus { left: 8px; }

/* Top bar */
.bar {
  position: sticky; top: 0; z-index: 5;
  display: flex; align-items: center; gap: 24px;
  padding: 10px var(--gutter);
  background: rgba(21, 18, 42, 0.92);
  backdrop-filter: blur(6px);
  border-bottom: 2px solid var(--gold);
}
.brand {
  display: flex; align-items: center; gap: 10px;
  font: 600 1.35rem var(--display); color: var(--parchment); text-decoration: none;
}
.brand img { width: 16px; height: 24px; }
.bar nav { display: flex; gap: 20px; margin-left: auto; flex-wrap: wrap; }
.bar nav a { color: var(--ash); text-decoration: none; font: 1.35rem/1 var(--label); letter-spacing: 0.02em; }
.bar nav a:hover, .bar nav a[aria-current] { color: var(--gold); }
@media (max-width: 760px) {
  /* On a phone the bar wraps to two rows; sticky, it would eat the screen. */
  .bar { position: static; flex-wrap: wrap; gap: 8px 16px; }
  .bar nav { order: 3; width: 100%; margin: 0; gap: 4px 18px; }
  .bar nav a { padding: 6px 0; }
  .bar .btn-small { margin-left: auto; }
}

/* Buttons: the game's gold-bordered menu buttons */
.btn {
  display: inline-block;
  font: 600 1.15rem/1 var(--display);
  color: var(--night);
  background: var(--gold);
  border: 2px solid var(--gold);
  padding: 14px 22px 12px;
  text-decoration: none;
  box-shadow: 0 4px 0 #9a5f12;
  transition: transform 0.08s ease, box-shadow 0.08s ease;
}
.btn:hover { color: var(--night); background: #ffcb63; transform: translateY(-1px); box-shadow: 0 5px 0 #9a5f12; }
.btn:active { transform: translateY(3px); box-shadow: 0 1px 0 #9a5f12; }
.btn-ghost { background: rgba(21, 18, 42, 0.8); color: var(--parchment); box-shadow: 0 4px 0 #0b0918; }
.btn-ghost:hover { background: var(--night); color: var(--gold); box-shadow: 0 5px 0 #0b0918; }
.btn-small { padding: 9px 14px 7px; font-size: 1rem; box-shadow: 0 3px 0 #9a5f12; }

/* Layout */
main { display: block; }
.section { max-width: 1100px; margin: 0 auto; padding: 56px var(--gutter) 8px; }
.kicker {
  font: 1.4rem/1 var(--label); text-transform: uppercase; letter-spacing: 0.08em;
  color: var(--ember); margin-bottom: 10px;
}
.lede { max-width: var(--measure); color: var(--parchment); font-size: 1.08rem; }
.fine { color: var(--ash); font-size: 0.92rem; }
.cta { display: flex; flex-wrap: wrap; gap: 14px; margin: 24px 0 14px; }
.page-head { padding-top: 64px; }
.page-head .lede { margin-bottom: 20px; }

/* Hero: the title screen art, full bleed, copy on the dark left side */
.hero { position: relative; min-height: min(88vh, 760px); display: grid; align-items: end; overflow: hidden; }
.hero-art {
  position: absolute; inset: 0; width: 100%; height: 100%;
  object-fit: cover; object-position: 60% 30%;
}
.hero::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(35, 40, 73, 0) 30%, rgba(35, 40, 73, 0.75) 68%, var(--dusk) 100%);
}
.hero-copy { position: relative; z-index: 1; max-width: 1100px; width: 100%; margin: 0 auto; padding: 0 var(--gutter) 40px; }
.hero h1 {
  font-size: clamp(2.6rem, 8.5vw, 6rem);
  color: #ffe08a;
  text-shadow: 0 4px 0 #8a3b12, 0 8px 0 rgba(21, 18, 42, 0.6);
  margin-bottom: 0.15em;
}
.hero h1 .wordmark i { text-shadow: 0 4px 0 #6e2a0c, 0 8px 0 rgba(21, 18, 42, 0.6); }
/* The REPL line above the logo, with a blinking cursor */
.prompt { font: clamp(1.3rem, 2.4vw, 1.7rem)/1 var(--label); color: var(--ash); margin: 0 0 4px; letter-spacing: 0.02em; }
.prompt::after { content: ""; display: inline-block; width: 0.5em; height: 0.9em; margin-left: 0.25em; vertical-align: -0.1em; background: var(--gold); animation: blink 1.1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }
.tag { font: 600 clamp(1.25rem, 2.6vw, 1.7rem)/1.3 var(--display); color: var(--parchment); max-width: 30ch; }
.hero-sub { max-width: 58ch; font-size: 1.08rem; }

/* The trail map: the world map from the game, with clickable stage pins */
.map {
  position: relative; margin: 28px 0 0;
  border: 2px solid var(--gold); background: var(--night);
  box-shadow: 0 0 0 4px var(--night), 0 18px 40px rgba(0, 0, 0, 0.35);
}
.map img { display: block; width: 100%; }
.pin {
  position: absolute; width: 7%; aspect-ratio: 1; transform: translate(-50%, -50%);
  border-radius: 50%; text-decoration: none;
}
.pin::before {
  content: ""; position: absolute; inset: 0; border-radius: 50%;
  border: 3px solid var(--tint); opacity: 0; transform: scale(0.6);
  transition: opacity 0.15s ease, transform 0.15s ease;
}
.pin:hover::before, .pin:focus-visible::before { opacity: 1; transform: scale(1); }
.pin:focus-visible { outline: none; }
.pin-label {
  position: absolute; left: 50%; bottom: calc(100% + 6px); transform: translate(-50%, 4px);
  background: var(--night); border: 2px solid var(--tint); color: var(--parchment);
  font: 1.25rem/1.05 var(--label); white-space: nowrap; padding: 6px 10px;
  opacity: 0; pointer-events: none; transition: opacity 0.15s ease, transform 0.15s ease;
}
.pin-label b { display: block; font-weight: 400; color: var(--tint); }
.pin:hover .pin-label, .pin:focus-visible .pin-label { opacity: 1; transform: translate(-50%, 0); }
.trail-list {
  list-style: none; padding: 0; margin: 22px 0 0;
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 2px; counter-reset: stage;
  background: var(--line); border: 2px solid var(--line);
}
.trail-list li { counter-increment: stage; background: var(--dusk); }
.trail-list a { display: block; padding: 14px 16px; text-decoration: none; height: 100%; }
.trail-list a:hover { background: var(--dusk-2); }
.tl-name { display: block; font: 600 1.15rem var(--display); color: var(--parchment); }
.tl-name::before { content: counter(stage) " · "; color: var(--ember); }
.tl-topic { color: var(--ash); font-size: 0.98rem; }
@media (max-width: 760px) {
  .trail-list { grid-template-columns: 1fr; }
  .pin-label { display: none; }
  .pin { width: 11%; }
}

/* Learn, use, prove */
.loop { list-style: none; padding: 0; margin: 28px 0 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.loop img { display: block; width: 100%; border: 2px solid var(--line); margin-bottom: 14px; }
.loop p { color: var(--parchment); font-size: 1rem; }
.count { margin-top: 16px; font: 1.4rem var(--label); color: var(--ash); }
.count b { color: var(--gold); font-weight: 400; }
@media (max-width: 860px) { .loop { grid-template-columns: 1fr; } }

/* Downloads */
.downloads { list-style: none; padding: 0; margin: 24px 0 12px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.downloads p { font-size: 0.95rem; color: var(--ash); margin-top: 12px; }
.dl {
  display: flex; flex-direction: column; gap: 6px; padding: 18px 18px 16px;
  background: var(--night); border: 2px solid var(--line); text-decoration: none;
  transition: border-color 0.12s ease;
}
.dl:hover { border-color: var(--gold); }
.dl-os { font: 600 1.5rem var(--display); color: var(--parchment); }
.dl-file { font: 1.25rem var(--label); color: var(--gold); }
.dl-file::before { content: "↓ "; }
@media (max-width: 860px) { .downloads { grid-template-columns: 1fr; } }

/* Code: styled like the in-game lore scroll card */
.code { margin: 0 0 1em; }
.code figcaption { font: 1.15rem var(--label); color: var(--ash); margin-bottom: 4px; text-transform: uppercase; letter-spacing: 0.05em; }
.code pre {
  margin: 0; padding: 14px 16px; overflow-x: auto;
  background: var(--night); border-left: 3px solid var(--gold);
  font: 0.95rem/1.55 var(--mono); color: var(--parchment);
}
.code .k { color: #ff9ecb; }
.code .s { color: #a8e88f; }
.code .n { color: #ffc861; }
.code .c { color: #8f88b4; font-style: italic; }
.code .b { color: #8cd9ff; }

/* Lesson page */
.lesson { --tint: var(--gold); }
.lesson-head { max-width: 1100px; margin: 0 auto; padding: 64px var(--gutter) 0; }
.lesson-head .kicker { color: var(--tint); }
.taunt { display: flex; gap: 16px; align-items: center; margin: 18px 0 0; max-width: 60ch; }
.taunt img { width: 36px; height: 56px; flex: none; }
.taunt p { margin: 0; font: 1.6rem/1.2 var(--label); color: var(--parchment); }
.taunt cite { display: block; font-style: normal; color: var(--tint); font-size: 1.25rem; margin-top: 4px; }

.scrolls { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 440px), 1fr)); gap: 20px; margin-top: 20px; }
.scroll {
  background: var(--night); border: 2px solid var(--gold);
  padding: 16px 18px 6px; scroll-margin-top: 90px;
}
.scroll-kick { font: 1.15rem var(--label); color: var(--ember); text-transform: uppercase; letter-spacing: 0.06em; margin: 0 0 4px; }
.scroll h3 { font-size: 1.4rem; }
.scroll .code pre { background: #0d0b1d; }
.insight { font-size: 1rem; }
.raises { font-size: 0.95rem; color: var(--zap); }

.puzzle-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; align-items: start; margin-top: 16px; }
.puzzle-grid img { width: 100%; border: 2px solid var(--line); }
details { border: 2px dashed var(--line); padding: 10px 14px; }
details[open] { border-style: solid; border-color: var(--moss); }
summary { cursor: pointer; font: 1.3rem var(--label); color: var(--moss); padding: 4px 0; }
details p { margin: 10px 0 0; }
@media (max-width: 860px) { .puzzle-grid { grid-template-columns: 1fr; } }

/* Practice trial */
.trial {
  margin-top: 20px; background: var(--night); border: 2px solid var(--tint);
  padding: 20px clamp(16px, 3vw, 28px); max-width: 820px;
}
.trial-top { display: flex; justify-content: space-between; gap: 12px; align-items: center; flex-wrap: wrap; margin-bottom: 14px; }
.trial-who { font: 1.4rem var(--label); color: var(--tint); }
.wards { display: flex; gap: 6px; }
.ward { width: 14px; height: 14px; border: 2px solid var(--tint); background: var(--tint); transition: background 0.2s ease, opacity 0.2s ease; }
.ward.broken { background: transparent; opacity: 0.4; }
.trial-prompt { font: 600 1.15rem var(--display); margin: 14px 0 12px; }
.options { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; }
.options button {
  width: 100%; text-align: left; display: flex; gap: 12px; align-items: baseline;
  background: var(--dusk); color: var(--parchment); border: 2px solid var(--line);
  padding: 10px 14px; min-height: 44px; font: 0.98rem var(--mono); cursor: pointer; white-space: pre-wrap;
  overflow-wrap: anywhere; touch-action: manipulation;
}
.options button:hover:not(:disabled) { border-color: var(--gold); }
.options button:disabled { cursor: default; }
.options .letter { font: 1.3rem/1 var(--label); color: var(--gold); flex: none; }
.options button.dim { opacity: 0.3; text-decoration: line-through; }
.options button.right { border-color: var(--moss); background: #1f3a2a; }
.options button.wrong { border-color: var(--zap); background: #42202a; }
.verdict { margin-top: 14px; padding: 12px 14px; border-left: 3px solid var(--line); background: var(--dusk); }
.verdict.right { border-color: var(--moss); }
.verdict.wrong { border-color: var(--zap); }
.verdict b { font: 1.35rem var(--label); font-weight: 400; display: block; }
.verdict.right b { color: var(--moss); }
.verdict.wrong b { color: var(--zap); }
.hint { margin-top: 14px; padding: 12px 14px; border: 1px dashed var(--tint); font-size: 0.98rem; }
.hint q { font: 1.35rem var(--label); display: block; color: var(--tint); }
.trial-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 16px; }
.trial-actions button {
  font: 600 1rem/1 var(--display); padding: 12px 18px 11px; min-height: 44px; cursor: pointer;
  border: 2px solid var(--gold); background: var(--gold); color: var(--night);
}
.trial-actions button.quiet { background: transparent; color: var(--parchment); border-color: var(--line); }
.trial-actions button.quiet:hover { border-color: var(--gold); color: var(--gold); }
.trial-actions button:disabled { opacity: 0.4; cursor: default; }
.banished { text-align: center; padding: 18px 0 8px; }
.banished h3 { color: var(--moss); font-size: 1.7rem; }
.shake { animation: shake 0.3s steps(4); }
@keyframes shake { 25% { transform: translateX(-5px); } 75% { transform: translateX(5px); } }

.pager { display: flex; justify-content: space-between; gap: 16px; max-width: 1100px; margin: 56px auto 0; padding: 0 var(--gutter); }
.pager a { display: block; padding: 14px 18px; border: 2px solid var(--line); text-decoration: none; font: 600 1.15rem var(--display); }
.pager a:hover { border-color: var(--gold); }
.pager small { display: block; font: 1.1rem var(--label); color: var(--ash); }
.pager [rel="next"] { text-align: right; margin-left: auto; }
@media (max-width: 560px) {
  .pager { flex-direction: column; }
  .pager [rel="next"] { margin-left: 0; }
}

/* Lesson index */
.lesson-list { list-style: none; max-width: 1100px; margin: 24px auto 0; padding: 0 var(--gutter); display: grid; gap: 14px; }
.lesson-list a {
  display: grid; grid-template-columns: 220px 1fr; gap: 4px 24px; padding: 18px 20px;
  border: 2px solid var(--line); border-left: 6px solid var(--tint); background: var(--night); text-decoration: none; color: var(--parchment);
}
.lesson-list a:hover { border-color: var(--tint); }
.li-stage { font: 1.3rem var(--label); color: var(--tint); grid-row: span 3; }
.li-topic { font: 600 1.45rem var(--display); color: var(--parchment); }
.li-scrolls { color: var(--parchment); font-size: 0.98rem; }
.li-meta { color: var(--ash); font-size: 0.9rem; }
@media (max-width: 680px) { .lesson-list a { grid-template-columns: 1fr; } .li-stage { grid-row: auto; } }

/* Guide */
.table-wrap { overflow-x: auto; margin: 16px 0; }
table { border-collapse: collapse; width: 100%; font-size: 1rem; }
th, td { text-align: left; padding: 10px 14px; border-bottom: 1px solid var(--line); vertical-align: top; }
thead th { font: 1.25rem var(--label); color: var(--ember); text-transform: uppercase; letter-spacing: 0.05em; font-weight: 400; border-bottom: 2px solid var(--gold); }
tbody th { font-weight: 700; color: var(--parchment); }
/* On a phone the controls table stacks: one block per action, each cell labeled. */
@media (max-width: 600px) {
  .controls thead { display: none; }
  .controls tr { display: block; padding: 12px 0; border-bottom: 1px solid var(--line); }
  .controls th, .controls td { display: block; border: 0; padding: 2px 0; }
  .controls tbody th { font: 600 1.15rem var(--display); margin-bottom: 4px; }
  .controls td::before { content: attr(data-label) " · "; font: 1.15rem var(--label); color: var(--ember); }
}
.things { list-style: none; padding: 0; margin: 20px 0; display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px 32px; }
.things li { display: flex; gap: 16px; align-items: flex-start; }
.things h3 { font-size: 1.15rem; margin-bottom: 0.2em; }
.things p { font-size: 0.98rem; margin: 0; }
.sprite { flex: none; width: 112px; height: 112px; display: grid; place-items: center; background: var(--night); border: 2px solid var(--line); }
.sprite img { max-width: 96px; max-height: 96px; width: auto; height: auto; }
@media (max-width: 760px) { .things { grid-template-columns: 1fr; } .sprite { width: 84px; height: 84px; } .sprite img { max-width: 72px; max-height: 72px; } }
.two { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; align-items: start; margin-top: 16px; }
.two > div > p { max-width: var(--measure); }
.shot { margin: 0; }
.shot img { width: 100%; border: 2px solid var(--line); display: block; }
.shot figcaption { font-size: 0.9rem; color: var(--ash); margin-top: 8px; }
@media (max-width: 860px) { .two { grid-template-columns: 1fr; } }
.plain { padding-left: 1.2em; max-width: var(--measure); }
.plain li { margin-bottom: 8px; }

.lost { min-height: 50vh; }
.traceback { max-width: var(--measure); margin: 8px 0 24px; }
.traceback .err { color: var(--zap); }

/* Footer */
.foot { margin-top: 80px; padding: 28px var(--gutter) 40px; border-top: 2px solid var(--line); color: var(--ash); font-size: 0.95rem; text-align: center; }
.foot img { vertical-align: -1px; width: 12px; height: 12px; }
.foot p { margin: 0 0 8px; }
.banished .wards { justify-content: center; }