/* Glasstrail site: the Signal skin (STYLE_GUIDE §2). One accent per screen: lime means "look here". */
@font-face { font-family: Inter; src: url(fonts/inter-latin-500-normal.woff2) format('woff2'); font-weight: 500; font-display: swap; }
@font-face { font-family: Inter; src: url(fonts/inter-latin-700-normal.woff2) format('woff2'); font-weight: 700; font-display: swap; }
@font-face { font-family: Inter; src: url(fonts/inter-latin-800-normal.woff2) format('woff2'); font-weight: 800; font-display: swap; }
@font-face { font-family: 'Plex Mono'; src: url(fonts/ibm-plex-mono-latin-500-normal.woff2) format('woff2'); font-weight: 500; font-display: swap; }

:root {
  --desk: #0A0A0B;
  --win: #151517;
  --bar: #1C1C1F;
  --line: #2B2B30;
  --text: #F4F4F1;
  --dim: #9C9CA4;
  --sig: #C6FF3D;
  --ink: #0A0A0B;
  --mono: 'Plex Mono', ui-monospace, Menlo, monospace;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--desk);
  background-image: radial-gradient(rgba(255,255,255,0.05) 1.2px, transparent 1.4px);
  background-size: 28px 28px;
  color: var(--text);
  font: 500 18px/1.6 Inter, system-ui, sans-serif;
}
a { color: var(--text); text-decoration-color: var(--dim); text-underline-offset: 3px; }
a:hover { text-decoration-color: var(--sig); }
::selection { background: var(--sig); color: var(--ink); }

.wrap { max-width: 860px; margin: 0 auto; padding: 0 20px; }

header.top { border-bottom: 1px solid var(--line); }
header.top .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; height: 68px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; font-weight: 800; font-size: 22px; letter-spacing: -0.5px; }
.brand img { width: 34px; height: 34px; }
nav { display: flex; gap: 20px; font-family: var(--mono); font-size: 13px; letter-spacing: 1.5px; text-transform: uppercase; }
nav a { text-decoration: none; color: var(--dim); }
nav a[aria-current] { color: var(--text); }

.hero { padding: 88px 0 56px; }
.hero h1 { font-weight: 800; font-size: clamp(40px, 7vw, 68px); line-height: 1.04; letter-spacing: -0.035em; margin: 0 0 22px; }
.hero p.lead { font-size: 21px; color: var(--dim); max-width: 640px; margin: 0 0 30px; }
.cta { display: flex; flex-wrap: wrap; gap: 12px; }
.btn { display: inline-block; padding: 12px 20px; border-radius: 10px; font-weight: 700; text-decoration: none; border: 1px solid var(--line); background: var(--win); }
.btn.primary { background: var(--sig); color: var(--ink); border-color: var(--sig); }

.label { font-family: var(--mono); font-size: 13px; letter-spacing: 3px; text-transform: uppercase; color: var(--dim); margin: 0 0 14px; }
section { padding: 40px 0; }
h2 { font-weight: 800; font-size: 30px; letter-spacing: -0.02em; margin: 0 0 16px; }
h3 { font-weight: 700; font-size: 19px; margin: 0 0 6px; }

/* Windows on the desk, like the source windows in the videos. */
.win { background: var(--win); border-radius: 10px; box-shadow: 0 30px 80px rgba(0,0,0,0.5), 0 0 0 1px rgba(255,255,255,0.09); overflow: hidden; }
.win .bar { background: var(--bar); padding: 9px 14px; font-family: var(--mono); font-size: 12px; letter-spacing: 2px; text-transform: uppercase; color: var(--dim); display: flex; justify-content: space-between; }
.win .body { padding: 20px 22px; }
.win .body p { margin: 0; color: var(--dim); }

.grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
@media (max-width: 640px) {
  .grid { grid-template-columns: 1fr; }
  header.top .wrap { height: auto; flex-direction: column; align-items: flex-start; gap: 8px; padding-top: 14px; padding-bottom: 12px; }
  nav { gap: 18px; font-size: 12px; }
  .hero { padding: 48px 0 32px; }
}

.rules { list-style: none; padding: 0; margin: 0; }
.rules li { padding: 14px 0; border-top: 1px solid var(--line); }
.rules li:first-child { border-top: 0; }
.rules b { color: var(--text); }

.signoff { border-left: 3px solid var(--sig); padding: 4px 0 4px 18px; font-size: 21px; margin: 0; }

.prose p, .prose li { color: #D6D6D2; }
.prose h2 { margin-top: 36px; }
.empty { font-family: var(--mono); font-size: 14px; letter-spacing: 1px; color: var(--dim); }

footer { border-top: 1px solid var(--line); margin-top: 40px; padding: 28px 0 40px; font-size: 15px; color: var(--dim); }
footer .wrap { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; }

/* ---- v2: the desk, tags, steps, sources, FAQ ---- */
.hero h1 .glass { background: linear-gradient(transparent 62%, rgba(198,255,61,0.28) 62%, rgba(198,255,61,0.28) 92%, transparent 92%); }
.brand.small { font-size: 18px; margin-bottom: 8px; }
.brand.small img { width: 24px; height: 24px; }
footer p { margin: 0; max-width: 360px; }
footer .flinks { display: flex; flex-wrap: wrap; gap: 8px 18px; align-content: flex-start; }
footer .flinks a { color: var(--dim); text-decoration: none; }
footer .flinks a:hover { color: var(--text); }

.desk { display: grid; grid-template-columns: 1.25fr 1fr; gap: 18px; padding-top: 8px; }
.desk .caption { grid-column: 1 / -1; margin: 2px 0 0; font-family: var(--mono); font-size: 12px; letter-spacing: 1px; color: var(--dim); }
.desk pre { margin: 0; font: 500 15px/1.75 var(--mono); color: #D6D6D2; white-space: pre-wrap; min-height: 330px; }
.desk .ln { display: block; }
.desk .ln.h { color: var(--dim); }
.desk .ln.on::after { content: ''; display: inline-block; width: 9px; height: 1.1em; margin-left: 2px; vertical-align: -3px; background: var(--sig); }
.desk .bar b { color: var(--sig); font-weight: 500; }
.desk ol { list-style: none; margin: 0; padding: 0; }
.desk ol li { display: flex; align-items: center; gap: 12px; padding: 10px 0; border-top: 1px solid var(--line); font-size: 15px; transition: opacity .35s, transform .35s; }
.desk ol li:first-child { border-top: 0; }
.desk ol li.wait { opacity: 0; transform: translateY(8px); }
@media (max-width: 760px) { .desk { grid-template-columns: 1fr; } .desk pre { min-height: 0; } }

/* Source tags: told apart by shape, like on screen (STYLE_GUIDE §7). */
.tag { display: inline-block; flex: none; min-width: 112px; text-align: center; padding: 4px 8px; border-radius: 4px; font: 500 11px/1.3 var(--mono); letter-spacing: 1.5px; border: 1.5px solid; }
.t-document { border-style: solid; border-color: var(--text); color: var(--text); }
.t-reported { border-style: dashed; border-color: var(--dim); color: var(--text); }
.t-claimed { border-style: dotted; border-color: var(--dim); color: var(--text); }
.t-data { border-color: var(--sig); color: var(--sig); }
.t-file { border-color: var(--faint, #46464E); color: var(--dim); }
.t-audio { background: var(--sig); border-color: var(--sig); color: var(--ink); }
.tags { display: grid; grid-template-columns: repeat(2, 1fr); gap: 4px 28px; }
.tagrow { display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-top: 1px solid var(--line); }
.tagrow p { margin: 0; color: var(--dim); font-size: 16px; }
@media (max-width: 640px) { .tags { grid-template-columns: 1fr; } }

.steps { list-style: none; counter-reset: s; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px 28px; }
.steps li { counter-increment: s; color: var(--dim); padding-top: 14px; border-top: 1px solid var(--line); }
.steps li::before { content: '0' counter(s); display: block; font: 500 13px var(--mono); letter-spacing: 2px; color: var(--sig); margin-bottom: 6px; }
.steps b { color: var(--text); display: block; }
@media (max-width: 640px) { .steps { grid-template-columns: 1fr; } }

.soon { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 16px; }

.faq details { border-top: 1px solid var(--line); padding: 4px 0; }
.faq details:last-child { border-bottom: 1px solid var(--line); }
.faq summary { cursor: pointer; list-style: none; padding: 12px 0; font-weight: 700; display: flex; justify-content: space-between; gap: 12px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: '+'; font-family: var(--mono); color: var(--dim); }
.faq details[open] summary::after { content: '–'; color: var(--sig); }
.faq details p { margin: 0 0 14px; color: var(--dim); max-width: 700px; }

.srcgroup { padding: 18px 0; }
a.win.src { display: block; text-decoration: none; transition: transform .15s, box-shadow .15s; }
a.win.src:hover { transform: translateY(-2px); box-shadow: 0 30px 80px rgba(0,0,0,0.5), 0 0 0 1px var(--sig); }
.note { color: var(--dim); border-left: 3px solid var(--line); padding-left: 16px; }
.status { display: inline-flex; align-items: center; gap: 10px; margin: 18px 0 0; font: 500 13px var(--mono); letter-spacing: 1.5px; text-transform: uppercase; color: var(--dim); }
.status .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--sig); }
.updated { font: 500 13px var(--mono); letter-spacing: 1px; color: var(--dim); margin: 14px 0 0; }

/* ---- worked example ---- */
.example .sub { color: var(--dim); margin: -6px 0 22px; }
.exlist { list-style: none; margin: 0 0 18px; padding: 0; display: grid; gap: 14px; }
.ex { background: var(--win); border-radius: 10px; box-shadow: 0 0 0 1px rgba(255,255,255,0.09); padding: 18px 22px; transition: opacity .4s, transform .4s; }
.ex.wait { opacity: 0; transform: translateY(10px); }
.exhead { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; }
.exsrc { font: 500 13px var(--mono); letter-spacing: 1px; color: var(--dim); }
.ex blockquote { margin: 12px 0 8px; font-weight: 700; font-size: 20px; line-height: 1.4; }
.ex blockquote::selection, .ex blockquote *::selection { background: var(--sig); }
.ex p { margin: 0; color: var(--dim); font-size: 16px; }
.ex p a { white-space: nowrap; }
.exgrid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.exgrid ul { margin: 0; padding-left: 18px; color: #D6D6D2; font-size: 16px; }
.exgrid li + li { margin-top: 8px; }
@media (max-width: 640px) { .exgrid { grid-template-columns: 1fr; } .ex blockquote { font-size: 18px; } }