/* Echoes of Color — site styles.
   Palette: the game's Prismatic Arcade scheme (UiColorScheme) and the four color stats.
   Panels follow the game's UiVisualLanguage: chamfered corners, surface gradient, accent rim,
   drop shadow, and a header card straddling the top edge. */

:root {
  --surface-low: #111629; --surface: #1b2239; --raised: #232c46; --selected: #353153;
  --text: #f1f4ff; --text-2: #b8c5dc; --muted: #a3b1cb;
  --accent: #b9a4ff; --border: #6d7c9a; --border-subtle: #414f6b;
  --red: #e8636d; --green: #70e0a6; --blue: #94c8ef; --yellow: #f5c453; --teal: #76e2c4;
  --cut: 12px;
}
* { box-sizing: border-box; }
html { font-size: 18px; }
body {
  margin: 0; color: var(--text); background: var(--surface-low);
  font: 400 1rem/1.65 "IBM Plex Sans", system-ui, sans-serif;
  background-image:
    linear-gradient(rgba(185,164,255,.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(185,164,255,.06) 1px, transparent 1px);
  background-size: 28px 28px;
}
a { color: var(--blue); }
a:focus-visible, summary:focus-visible { outline: 3px solid var(--yellow); outline-offset: 3px; }
.wrap { max-width: 1200px; margin: 0 auto; padding: 0 28px; }
h1, h2, h3 { font-family: "Chakra Petch", sans-serif; line-height: 1.15; margin: 0; }
.mono { font-family: "IBM Plex Mono", monospace; font-size: .8rem; letter-spacing: .06em; text-transform: uppercase; }
.meta { color: var(--muted); }
.skip { position: absolute; left: -999px; } .skip:focus { left: 16px; top: 12px; z-index: 10; background: var(--yellow); color: #111; padding: 6px 12px; }

/* ---- Panels ---- */
.rim { position: relative; margin-top: 20px; filter: drop-shadow(4px 6px 0 rgba(0,0,0,.3)); }
.rim::before { content: ""; position: absolute; inset: 0; background: var(--rim, var(--accent)); opacity: .55; }
.rim::before, .rim > .panel {
  clip-path: polygon(var(--cut) 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% calc(100% - var(--cut)),
                     calc(100% - var(--cut)) 100%, var(--cut) 100%, 0 calc(100% - var(--cut)), 0 var(--cut));
}
.panel { position: relative; margin: 2px; padding: 34px 26px 24px; background: linear-gradient(var(--surface), var(--raised)); }
.card-title {
  position: absolute; top: -16px; left: 22px; z-index: 2; padding: 5px 16px; border-radius: 7px;
  background: color-mix(in srgb, var(--raised), var(--rim, var(--accent)) 18%); border: 1.5px solid var(--rim, var(--accent));
  font: 700 1.05rem "Chakra Petch", sans-serif;
}

/* ---- Header: nav as connected board nodes ---- */
header { padding-top: 24px; }
.top { display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; color: var(--text); font: 700 1.15rem "Chakra Petch"; }
.brand svg { width: 40px; height: 40px; }
header nav ol { display: flex; list-style: none; margin: 0; padding: 0; align-items: center; }
header nav li { display: flex; align-items: center; }
header nav li + li::before { content: ""; width: 24px; height: 2px; background: var(--border-subtle); }
header nav a { display: flex; align-items: center; gap: 9px; padding: 8px 14px; border: 1.5px solid var(--border-subtle); border-radius: 999px;
        color: var(--text-2); text-decoration: none; font-weight: 500; background: var(--surface); }
header nav a::before { content: ""; width: 9px; height: 9px; border-radius: 50%; background: var(--c); box-shadow: 0 0 10px var(--c); }
header nav a:hover, header nav a[aria-current] { color: var(--text); border-color: var(--c); }

/* ---- Home banner ---- */
.banner { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 36px; padding: 54px 0 10px; }
.wordmark { font: 700 clamp(3rem, 9.4vw, 8.2rem)/.9 "Chakra Petch", sans-serif; letter-spacing: -.01em; margin: 0; text-transform: uppercase; }
.wordmark .of { color: var(--muted); font-weight: 500; font-size: .55em; vertical-align: .32em; margin: 0 .08em; }
.wordmark .color span:nth-child(1) { color: var(--red); }
.wordmark .color span:nth-child(2) { color: var(--green); }
.wordmark .color span:nth-child(3) { color: var(--blue); }
.wordmark .color span:nth-child(4) { color: var(--yellow); }
.wordmark .color span:nth-child(5) { color: var(--accent); }
.resource { display: grid; grid-template-columns: repeat(4, 1fr); gap: 6px; height: 10px; margin: 22px 0 0; max-width: 780px; }
.resource i { background: var(--c); clip-path: polygon(6px 0, 100% 0, calc(100% - 6px) 100%, 0 100%); opacity: .9; }
.emblem { width: min(30vw, 330px); }
.emblem .spoke { stroke-dasharray: 6 10; animation: flow 3s linear infinite; }
@keyframes flow { to { stroke-dashoffset: -64; } }
.emblem .ring { transform-origin: 256px 256px; animation: turn 40s linear infinite; }
@keyframes turn { to { transform: rotate(360deg); } }
.intro { display: grid; grid-template-columns: 1fr auto; gap: 30px; align-items: end; padding: 26px 0 30px; }
.lead { font-size: 1.22rem; color: var(--text-2); max-width: 36em; margin: 0; }
.lead b, .lead strong { color: var(--text); font-weight: 600; }
.cta { display: flex; gap: 14px; flex-wrap: wrap; }
.btn { display: inline-block; padding: 13px 24px; font: 700 1rem "Chakra Petch"; text-decoration: none; color: var(--surface-low); background: var(--accent);
       clip-path: polygon(10px 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%, 0 10px); }
.btn.ghost { background: transparent; color: var(--text); box-shadow: inset 0 0 0 2px var(--border); }

/* ---- Page heading for inner pages ---- */
.page-head { padding: 46px 0 6px; }
.page-head h1 { font-size: clamp(2.2rem, 5vw, 3.6rem); }
.page-head p { color: var(--text-2); margin: 10px 0 0; max-width: 40em; }
.page-head .resource { max-width: 420px; height: 7px; margin-top: 18px; }

/* ---- Layout grids ---- */
.grid { display: grid; grid-template-columns: 1.45fr 1fr; gap: 34px; padding: 30px 0 70px; align-items: start; }
.single { padding: 46px 28px 70px; }
.single > * { max-width: 860px; }
.stack { display: grid; gap: 34px; }

/* ---- "What is it?" with Fig. 1 ---- */
.about { --rim: var(--teal); }
.about .panel { display: grid; grid-template-columns: 1fr 1.05fr; gap: 26px; align-items: center; }
.about .prose p { color: var(--text-2); }
figure { margin: 0; }
.blueprint { background: #0e1426; border: 1px solid var(--border-subtle); padding: 12px 12px 8px; }
figcaption.mono { color: var(--muted); margin-top: 8px; text-transform: none; letter-spacing: .02em; font-size: .82rem; }

/* ---- Dev log entries ---- */
.post { padding: 18px 0; border-top: 1px solid var(--border-subtle); }
.post:first-of-type { border-top: 0; padding-top: 2px; }
.post h2, .post h3 { font-size: 1.35rem; margin: 5px 0 8px; }
.post h2 a, .post h3 a { color: var(--text); text-decoration: none; }
.post h2 a:hover, .post h3 a:hover { color: var(--accent); }
.post p { margin: 0 0 10px; color: var(--text-2); }
.tags { display: flex; gap: 6px; flex-wrap: wrap; }
.tag { font: 600 .75rem "IBM Plex Sans"; padding: 2px 9px; border-radius: 999px; border: 1px solid color-mix(in srgb, var(--c), transparent 40%);
       background: color-mix(in srgb, var(--c), transparent 85%); color: color-mix(in srgb, var(--c), white 30%); }
.draft { display: inline-block; margin-left: 8px; padding: 1px 8px; border: 1.5px dashed var(--yellow); color: var(--yellow); border-radius: 4px;
         font: 600 .7rem "IBM Plex Mono"; letter-spacing: .1em; vertical-align: middle; }
.more { margin: 14px 0 0; }

/* ---- Current build ---- */
.build { --rim: var(--green); }
.build h3, .release h2 { font-size: 2.3rem; color: var(--green); display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
.suffix { font-size: .5em; color: var(--muted); font-weight: 500; }
.stamp { display: inline-block; transform: rotate(-4deg); border: 2px solid var(--yellow); color: var(--yellow); padding: 1px 10px;
         font: 600 .72rem "IBM Plex Mono"; letter-spacing: .14em; border-radius: 3px; }
.build p { margin: 6px 0 16px; color: var(--text-2); }
.downloads { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.dl { padding: 9px 12px; border: 1.5px solid var(--border-subtle); border-radius: 7px; color: var(--text); text-decoration: none; background: var(--surface-low); font-weight: 500; }
.dl:hover { border-color: var(--green); }
.dl small { display: block; color: var(--muted); font-size: .76rem; font-weight: 400; }

/* ---- Specimen log ---- */
.releases { --rim: var(--blue); }
.ledger { width: 100%; border-collapse: collapse; }
.ledger td { padding: 9px 0; border-top: 1px dashed var(--border-subtle); vertical-align: top; }
.ledger tr:first-child td { border-top: 0; }
.ledger td:first-child { font: 600 .95rem "IBM Plex Mono"; white-space: nowrap; padding-right: 14px; }
.ledger td:first-child::before { content: "\25C6  "; color: var(--border); }
.ledger tr:first-child td:first-child, .ledger tr:first-child td:first-child::before { color: var(--blue); }
.ledger a { color: inherit; text-decoration: none; }
.ledger a:hover { color: var(--blue); text-decoration: underline; }
.ledger .d { color: var(--muted); font-size: .85rem; white-space: nowrap; text-align: right; padding-left: 10px; }
.ledger .n { color: var(--text-2); font-size: .95rem; }
.next { --rim: var(--yellow); }
.next p { margin: 0; color: var(--text-2); }

/* ---- Releases page ---- */
.release { --rim: var(--blue); scroll-margin-top: 20px; }
.release.latest { --rim: var(--green); }
.release h2 { color: var(--blue); font-size: 2rem; }
.release.latest h2 { color: var(--green); }
.release .when { color: var(--muted); margin-bottom: 4px; }
.release .downloads { grid-template-columns: repeat(3, 1fr); margin-top: 16px; }
.release .none { color: var(--muted); font-style: italic; margin: 12px 0 0; }
details { margin-top: 14px; color: var(--muted); }
details summary { cursor: pointer; font: 500 .8rem "IBM Plex Mono"; letter-spacing: .06em; text-transform: uppercase; }
.checksums { font: 400 .74rem/1.7 "IBM Plex Mono"; overflow-wrap: anywhere; margin-top: 8px; }

/* ---- Article text (rendered markdown) ---- */
.prose > :first-child { margin-top: 0; }
.prose p, .prose ul, .prose ol, .prose blockquote, .prose pre { margin: 0 0 1em; }
.prose h2 { font-size: 1.6rem; margin: 1.6em 0 .5em; color: var(--text); }
.prose h3 { font-size: 1.25rem; margin: 1.4em 0 .4em; color: var(--text); }
.prose li { margin: .25em 0; }
.prose li::marker { color: var(--accent); }
.prose blockquote { border-left: 4px solid var(--accent); padding: 4px 0 4px 16px; color: var(--text-2); background: rgba(185,164,255,.06); }
.prose code { font: 500 .88em "IBM Plex Mono"; background: var(--surface-low); border: 1px solid var(--border-subtle); padding: 1px 5px; border-radius: 4px; }
.prose pre { background: #0e1426; border: 1px solid var(--border-subtle); padding: 14px 16px; overflow-x: auto; }
.prose pre code { background: none; border: 0; padding: 0; }
.prose img { max-width: 100%; height: auto; border: 1px solid var(--border-subtle); }
.prose hr { border: 0; border-top: 1px dashed var(--border-subtle); margin: 2em 0; }
.post-nav { display: flex; justify-content: space-between; gap: 20px; margin-top: 30px; }
.post-nav a { text-decoration: none; }

footer { border-top: 1px solid var(--border-subtle); padding: 24px 0 40px; color: var(--muted); display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap; }
footer a { color: var(--muted); }
footer .bar { display: flex; gap: 4px; } footer .bar i { width: 26px; height: 5px; background: var(--c); }

@media (max-width: 900px) {
  .banner, .intro, .grid, .about .panel { grid-template-columns: 1fr; }
  .emblem { width: 220px; justify-self: center; grid-row: 1; }
  .top { flex-direction: column; align-items: flex-start; gap: 14px; }
  header nav ol { flex-wrap: wrap; gap: 8px; }
  header nav li + li::before { display: none; }
  header nav a { padding: 6px 12px; }
  .release .downloads { grid-template-columns: 1fr 1fr; }
}
@media (prefers-reduced-motion: reduce) { * { animation: none !important; } }