/* Guide + Science page composition. Loads after site.css. */

.page-hero { position: relative; padding: calc(var(--header-h) + 76px) 0 56px; }
.page-hero h1 { font-size: clamp(44px, 5.6vw, 84px); letter-spacing: -.05em; margin-top: 22px; }
.page-hero h1 em { font-style: normal; background: linear-gradient(100deg, var(--cyan-2), var(--cyan) 40%, var(--teal)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.page-hero .lead { max-width: 680px; margin-top: 24px; color: var(--muted); font-size: 18px; line-height: 1.7; }
.page-hero .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.page-hero .hero-meta { display: flex; flex-wrap: wrap; gap: 8px 18px; margin-top: 26px; font: 500 12px/1.4 var(--mono); color: var(--dim); }
.page-hero .hero-meta i { display: inline-block; width: 6px; height: 6px; margin-right: 8px; border-radius: 50%; background: var(--teal); box-shadow: 0 0 8px var(--teal); vertical-align: middle; }

.content-section { position: relative; padding: clamp(72px, 8vw, 120px) 0; }
.content-section::before { content: ""; position: absolute; top: 0; left: 0; right: 0; height: 1px; background: linear-gradient(90deg, transparent, var(--line-strong), transparent); }
.content-section .section-head { margin-bottom: clamp(32px, 5vw, 56px); }
.content-section .section-head h2 { font-size: clamp(30px, 3.6vw, 48px); }
.prose { max-width: 720px; color: var(--ink-2); font-size: 16px; line-height: 1.75; display: grid; gap: 18px; }
.prose a, .callout a { color: var(--cyan); background: linear-gradient(currentColor, currentColor) no-repeat 0 100% / 0 1px; transition: background-size .2s var(--ease-out); }
.prose a:hover, .callout a:hover { background-size: 100% 1px; }
.prose b { color: var(--ink); font-weight: 700; }
.prose ul { margin: 0; padding-left: 20px; display: grid; gap: 6px; }
.prose code { font: 500 .9em var(--mono); color: var(--cyan-2); background: rgba(31,228,255,.07); padding: 1px 6px; border-radius: 4px; }
.two-col { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 40px; align-items: start; }
.two-col.wide-right { grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr); }

/* format buckets */
.bucket-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.bucket { padding: 18px 18px 16px; border: 1px solid var(--line); border-radius: 12px; background: rgba(6,12,26,.55); }
.bucket small { display: block; font: 600 10px/1 var(--mono); letter-spacing: .16em; color: var(--dim); text-transform: uppercase; }
.bucket strong { display: block; margin-top: 10px; color: var(--ink); font-size: 15px; }
.bucket .chip-row { margin-top: 12px; }

/* key table */
.keys { display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px 22px; }
.keys div { display: grid; grid-template-columns: 118px 1fr; align-items: center; gap: 12px; padding: 9px 0; border-bottom: 1px solid var(--line); font-size: 14px; color: var(--ink-2); }
.keys .kbd-group { display: flex; gap: 4px; flex-wrap: wrap; }

/* measure tools */
.measure-tools { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; }
.measure-tools article { position: relative; min-height: 128px; padding: 18px 16px 16px 50px; border: 1px solid var(--line); border-radius: 12px; background: linear-gradient(145deg, rgba(12,25,48,.7), rgba(5,11,23,.65)); }
.measure-tools article::before { content: attr(data-n); position: absolute; left: 16px; top: 18px; font: 600 10.5px var(--mono); color: var(--cyan); }
.measure-tools h3 { font-size: 15px; }
.measure-tools p { margin-top: 6px; color: var(--muted); font-size: 12.5px; line-height: 1.55; }
.badge-demo { display: grid; gap: 10px; margin-top: 18px; }
.badge-demo .b { display: grid; grid-template-columns: 14px 1fr; align-items: start; gap: 12px; padding: 12px 14px; border: 1px solid var(--line); border-radius: 10px; background: rgba(6,12,26,.55); font-size: 13.5px; color: var(--ink-2); }
.badge-demo .b i { width: 10px; height: 10px; margin-top: 5px; border-radius: 50%; }
.badge-demo .b.g i { background: var(--teal); box-shadow: 0 0 10px var(--teal); }
.badge-demo .b.y i { background: var(--amber); box-shadow: 0 0 10px var(--amber); }
.badge-demo .b.r i { background: var(--red); box-shadow: 0 0 10px var(--red); }
.badge-demo b { color: var(--ink); }

/* pipeline */
.pipeline { border: 1px solid var(--line); border-radius: var(--r-xl); background: rgba(6,12,26,.55); overflow: hidden; }
.pipeline-head { display: flex; justify-content: space-between; align-items: center; height: 40px; padding: 0 16px; border-bottom: 1px solid var(--line); background: rgba(11,24,46,.67); font: 600 10.5px var(--mono); letter-spacing: .14em; color: var(--muted); }
.pipeline-row { display: grid; grid-template-columns: repeat(5, 1fr); gap: 10px; padding: 16px; }
.pipeline-row article { min-height: 122px; padding: 16px 14px; border: 1px solid rgba(103,167,230,.12); border-radius: 10px; background: linear-gradient(155deg, rgba(12,27,52,.72), rgba(3,9,20,.65)); }
.pipeline-row small { font: 600 9px var(--mono); letter-spacing: .14em; color: var(--dim); }
.pipeline-row strong { display: block; margin-top: 12px; color: var(--ink); font-size: 14px; }
.pipeline-row span { display: block; margin-top: 5px; color: var(--muted); font-size: 12px; line-height: 1.5; }

/* readiness gate lab */
.permit-lab { border: 1px solid var(--line); border-radius: 20px; background: rgba(6,12,26,.6); overflow: hidden; }
.permit-head { display: flex; justify-content: space-between; align-items: center; gap: 12px; height: 40px; padding: 0 16px; border-bottom: 1px solid var(--line); background: rgba(11,24,46,.52); font: 600 10.5px var(--mono); letter-spacing: .14em; color: #b7eaff; }
.permit-head small { color: var(--dim); letter-spacing: .06em; }
.gate-controls { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; padding: 16px; }
.gate-controls label { display: grid; gap: 8px; }
.gate-controls label span { font: 600 10px var(--mono); letter-spacing: .14em; color: var(--dim); text-transform: uppercase; }
.gate-controls button { position: relative; overflow: hidden; height: 42px; border: 1px solid var(--line-strong); border-radius: 9px; background: rgba(255,255,255,.03); font: 600 12px var(--mono); letter-spacing: .12em; color: var(--ink); transition: border-color .25s, background .25s, color .25s; }
.gate-controls button[data-state="good"], .gate-controls button[data-state="known"] { border-color: rgba(79,232,179,.45); color: var(--teal); background: rgba(79,232,179,.07); }
.gate-controls button[data-state="preview"], .gate-controls button[data-state="unknown"] { border-color: rgba(246,187,79,.45); color: var(--amber); background: rgba(246,187,79,.07); }
.gate-controls button[data-state="blocked"] { border-color: rgba(255,107,122,.45); color: var(--red); background: rgba(255,107,122,.07); }
.permit-result { display: grid; gap: 4px; margin: 0 12px; padding: 16px; border: 1px solid var(--line); border-radius: 8px; background: rgba(3,6,13,.6); }
.permit-result small { font: 600 10px var(--mono); letter-spacing: .16em; color: var(--dim); }
.permit-result strong { font: 800 26px/1 var(--font); letter-spacing: -.03em; }
.permit-result span { color: var(--muted); font-size: 13px; }
.permit-result.ready { border-color: rgba(79,232,179,.4); } .permit-result.ready strong { color: var(--teal); }
.permit-result.preview { border-color: rgba(246,187,79,.4); } .permit-result.preview strong { color: var(--amber); }
.permit-result.blocked { border-color: rgba(255,107,122,.4); } .permit-result.blocked strong { color: var(--red); }
.permit-outputs { display: grid; gap: 8px; padding: 12px; }
.permit-outputs div { display: grid; grid-template-columns: 1.2fr 1fr auto; gap: 10px; align-items: center; padding: 10px 12px; border: 1px solid var(--line); border-radius: 8px; font-size: 13px; color: var(--ink-2); }
.permit-outputs b { font: 600 10.5px var(--mono); color: var(--muted); letter-spacing: .08em; }
.permit-outputs em { font: 600 9.5px var(--mono); font-style: normal; letter-spacing: .1em; color: var(--teal); }
.permit-outputs.preview em { color: var(--amber); }
.permit-outputs.blocked em { color: var(--red); }

/* formats matrix */
.format-controls { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 16px; }
.format-controls button { position: relative; overflow: hidden; height: 36px; padding: 0 14px; border: 1px solid var(--line); border-radius: 8px; background: rgba(255,255,255,.02); font-size: 13px; font-weight: 600; color: var(--ink-2); transition: border-color .2s, background .2s, color .2s; }
.format-controls button:hover { border-color: var(--line-strong); }
.format-controls button:active, .gate-controls button:active { transform: scale(.96); transition: transform .08s; }
.format-controls button.active { border-color: rgba(31,228,255,.45); background: rgba(31,228,255,.07); color: var(--ink); }
.format-controls .count { margin-left: auto; align-self: center; font: 500 11px var(--mono); color: var(--dim); }
.format-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; }
.format-grid article { min-height: 118px; padding: 16px; border: 1px solid var(--line); border-radius: 12px; background: linear-gradient(150deg, rgba(11,24,47,.66), rgba(4,10,22,.68)); transition: transform .3s var(--ease), border-color .3s; }
.format-grid article:hover { transform: translateY(-3px); border-color: rgba(31,228,255,.28); }
.format-grid article.hidden { display: none; }
.format-grid strong { display: block; color: var(--ink); font-size: 20px; letter-spacing: -.02em; }
.format-grid span { display: block; margin-top: 6px; color: var(--muted); font-size: 12.5px; line-height: 1.5; }
.format-grid small { display: block; margin-top: 6px; font: 600 9.5px var(--mono); letter-spacing: .1em; color: var(--dim); text-transform: uppercase; }
.format-grid article[data-category~="streaming"] small { color: var(--teal); }

/* limits list */
.limits { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
.limits article { padding: 20px; border: 1px solid var(--line); border-radius: 12px; background: rgba(6,12,26,.5); }
.limits h3 { font-size: 16px; }
.limits p { margin-top: 8px; color: var(--muted); font-size: 13.5px; line-height: 1.6; }

/* quickstart */
.steps { display: grid; grid-template-columns: repeat(5, 1fr); gap: 10px; counter-reset: step; }
.steps article { position: relative; padding: 22px 18px 18px; border: 1px solid var(--line); border-radius: 12px; background: rgba(6,12,26,.55); }
.steps article::before { counter-increment: step; content: counter(step, decimal-leading-zero); position: absolute; top: 14px; right: 16px; font: 600 11px var(--mono); color: var(--cyan); }
.steps h3 { font-size: 15px; }
.steps p { margin-top: 8px; color: var(--muted); font-size: 13px; line-height: 1.55; }

/* faq */
.faq details { border: 1px solid var(--line); border-radius: 12px; background: rgba(6,12,26,.5); padding: 0 20px; transition: border-color .25s; }
.faq details + details { margin-top: 8px; }
.faq details[open] { border-color: rgba(31,228,255,.3); }
.faq summary { display: flex; justify-content: space-between; align-items: center; gap: 16px; padding: 18px 0; cursor: pointer; list-style: none; color: var(--ink); font-weight: 700; font-size: 16px; letter-spacing: -.015em; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font: 400 20px var(--mono); color: var(--cyan); transition: transform .25s; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { padding: 0 0 18px; color: var(--muted); font-size: 14.5px; line-height: 1.65; }

/* science page: ladder */
.ladder { position: relative; display: grid; gap: 10px; padding-left: 34px; }
.ladder-fill { position: absolute; left: 9px; top: 12px; bottom: 12px; width: 2px; background: var(--line); }
.ladder-fill::after { content: ""; position: absolute; left: 0; top: 0; width: 100%; height: var(--p, 0%); background: linear-gradient(180deg, var(--blue), var(--cyan), var(--teal)); box-shadow: 0 0 12px var(--cyan); transition: height .8s var(--ease-out); }
.rung { position: relative; padding: 18px 20px; border: 1px solid var(--line); border-radius: 12px; background: rgba(6,12,26,.55); transition: border-color .4s, background .4s, transform .5s var(--ease); }
.rung::before { content: ""; position: absolute; left: -31px; top: 22px; width: 12px; height: 12px; border-radius: 50%; border: 2px solid var(--dim); background: var(--bg-deep); transition: border-color .4s, background .4s, box-shadow .4s; }
.rung.active { border-color: rgba(31,228,255,.35); background: rgba(31,228,255,.05); }
.rung.active::before { border-color: var(--cyan); background: var(--cyan); box-shadow: var(--glow-cyan); }
.rung header { display: flex; flex-wrap: wrap; align-items: baseline; gap: 10px 14px; }
.rung header b { font: 600 11px var(--mono); letter-spacing: .12em; color: var(--cyan); }
.rung header h3 { font-size: 17px; }
.rung p { margin-top: 8px; color: var(--muted); font-size: 14px; line-height: 1.6; }
.rung.boundary { border-style: dashed; }
.rung .tag { margin-left: auto; }

.register .table td:nth-child(2) { font-family: var(--mono); font-size: 12.5px; color: var(--ink-2); }
.register .table td:last-child { color: var(--muted); font-size: 13px; }
.register-summary { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-bottom: 20px; }
.register-summary .stat { padding: 20px 22px; border: 1px solid var(--line); border-radius: 12px; background: rgba(6,12,26,.55); }

.doi-list { display: grid; gap: 8px; }
.doi-list a { display: grid; grid-template-columns: 90px 1fr auto; align-items: center; gap: 14px; padding: 12px 16px; border: 1px solid var(--line); border-radius: 10px; background: rgba(6,12,26,.5); color: var(--ink-2); font-size: 14px; transition: border-color .25s; }
.doi-list a:hover { border-color: rgba(31,228,255,.35); }
.doi-list a b { font: 600 12px var(--mono); color: var(--cyan); }
.doi-list a span:last-child { font: 500 12px var(--mono); color: var(--dim); }
.doi-list a.concept { border-color: rgba(79,232,179,.35); }
.doi-list a.concept b { color: var(--teal); }
.codeblock { margin: 0; padding: 16px 18px; border: 1px solid var(--line); border-radius: 12px; background: rgba(3,6,13,.85); color: var(--ink-2); font: 500 12.5px/1.7 var(--mono); overflow-x: auto; }
.codeblock .c { color: var(--dim); }
.codeblock .k { color: var(--cyan); }

@media (max-width: 1100px) {
  .bucket-grid, .measure-tools, .format-grid, .register-summary { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .pipeline-row { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .steps { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .two-col, .two-col.wide-right { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 900px) {
  .format-controls button { height: 44px; }
  .gate-controls button { height: 46px; }
  .rung .boundary-label { font-size: 9.5px; }
}
@media (max-width: 700px) {
  .measure-tools article { min-height: 0; }
  .bucket-grid, .measure-tools, .format-grid, .keys, .limits, .register-summary, .gate-controls, .pipeline-row, .steps { grid-template-columns: minmax(0, 1fr); }
  .keys div { grid-template-columns: 100px 1fr; }
  .permit-outputs div { grid-template-columns: minmax(0, 1fr); gap: 4px; }
  .doi-list a { grid-template-columns: minmax(0, 1fr); gap: 4px; }
}