/* Skills extend the site's warm paper / ink palette. */
.skills-library, .skill-reader { max-width: 1600px; margin: 0 auto; }
.skills-library *, .skill-reader * { box-sizing: border-box; }
.skills-library [hidden], .skill-reader [hidden] { display: none !important; }
[data-skill-category="Identity"] { --skill-ink: var(--ink-blue); }
[data-skill-category="Application"] { --skill-ink: var(--ink-violet); }
[data-skill-category="Infrastructure"] { --skill-ink: var(--ink-teal); }
[data-skill-category="Research"] { --skill-ink: var(--ink-copper); }
.skill-eyebrow { margin: 0 0 16px; font: 650 11px/1.5 var(--sans); letter-spacing: .15em; text-transform: uppercase; color: var(--fg-mute); }
.skills-heading { display: grid; grid-template-columns: minmax(0, 1fr) minmax(220px, 300px); gap: 48px; align-items: end; padding: 18px 0 40px; }
.skills-heading h1 { margin: 0 0 22px; font: 750 clamp(38px, 4.5vw, 72px)/1.04 var(--sans); letter-spacing: -.065em; }
.skills-heading h1 span { color: var(--ink-copper); }
.skills-intro { max-width: 590px; color: var(--fg-dim); font-size: 16px; line-height: 1.85; margin: 0; }
.skills-edition { padding: 8px 0 8px 26px; border-left: 1px solid var(--border); }
.skills-edition > strong { font: 650 42px/1 var(--sans); letter-spacing: -.06em; }
.skills-edition > strong span { display: block; font: 600 12px/1.5 var(--sans); letter-spacing: 0; margin-top: 10px; }
.skills-edition p, .skills-edition a { font-size: 12px; line-height: 1.8; }
.skills-edition p { color: var(--fg-dim); margin: 12px 0; }
.skills-filters { display: flex; flex-wrap: wrap; align-items: end; gap: 18px 28px; padding: 24px 0; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.skills-search { flex: 1 1 250px; max-width: 460px; font-size: 11px; font-weight: 650; color: var(--fg-dim); }
.skills-search input { display: block; width: 100%; min-height: 44px; margin-top: 8px; border: 1px solid var(--control-border); border-radius: 8px; background: var(--card); color: var(--fg); padding: 10px 14px; font: 400 14px var(--sans); }
.skills-categories { display: flex; flex-wrap: wrap; gap: 6px; }
.skills-categories button, .skill-toolbar button, .skill-toolbar a { min-height: 42px; padding: 10px 13px; border: 1px solid var(--border); border-radius: 7px; background: transparent; color: var(--fg-dim); font: 600 12px/1.5 var(--sans); cursor: pointer; text-decoration: none; }
.skills-categories button span { font: 10px var(--mono); margin-left: 5px; opacity: .8; }
.skills-categories button[aria-pressed="true"] { background: color-mix(in srgb, var(--skill-ink, var(--ink-slate)) 12%, var(--card)); color: var(--skill-ink, var(--fg)); border-color: var(--skill-ink, var(--fg-dim)); }
.skills-results-line { display: flex; justify-content: space-between; align-items: baseline; margin: 28px 0 16px; gap: 12px; }
.skills-results-line h2 { font-size: 17px; margin: 0; letter-spacing: -.02em; }
.skills-results-line p { font: 11px var(--mono); color: var(--fg-mute); margin: 0; }
.skills-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.skill-card { min-width: 0; display: flex; flex-direction: column; position: relative; padding: 25px 23px 0; border: 1px solid var(--border); border-top: 3px solid var(--skill-ink); border-radius: 5px 15px 15px 5px; background: var(--card); scroll-margin-top: 130px; }
.skill-card:target { outline: 2px solid var(--skill-ink); outline-offset: 4px; }
.skill-card-top { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.skill-category { color: var(--skill-ink); font: 650 10px/1.5 var(--sans); letter-spacing: .07em; text-transform: uppercase; }
.skill-number { color: var(--fg-mute); font: 11px var(--mono); }
.skill-card h3 { margin: 22px 0 13px; font: 700 22px/1.3 var(--sans); letter-spacing: -.045em; }
.skill-card h3 a { color: var(--fg); text-decoration: none; }
.skill-card h3 a:hover { color: var(--skill-ink); text-decoration: none; }
.skill-card > p { margin: 0 0 25px; font-size: 13px; line-height: 1.85; color: var(--fg-dim); }
.skill-card-meta { display: flex; gap: 15px; flex-wrap: wrap; font: 10px/1.7 var(--mono); color: var(--fg-mute); margin: auto 0 16px; }
.skill-card-actions { display: flex; align-items: center; gap: 17px; border-top: 1px solid var(--border); }
.skill-card-actions a { display: inline-flex; align-items: center; gap: 8px; min-height: 53px; font: 600 12px var(--sans); color: var(--fg-dim); text-decoration: none; }
.skill-card-actions a:hover { color: var(--skill-ink); text-decoration: none; }
.skill-card-actions .skill-read-link { margin-right: auto; color: var(--skill-ink); }
.skills-empty { padding: 40px 12px; color: var(--fg-dim); text-align: center; }
.skills-use { margin-top: 42px; padding: 30px 0; border-top: 1px solid var(--border); display: grid; grid-template-columns: 1fr 1.4fr; gap: 35px; }
.skills-use h2 { margin: 0; font: 700 25px/1.3 var(--sans); letter-spacing: -.04em; }
.skills-use > p { margin: 0; color: var(--fg-dim); font-size: 14px; line-height: 1.9; max-width: 680px; }
.skill-breadcrumb { display: flex; gap: 25px; font: 12px/1.5 var(--sans); margin: 6px 0 38px; color: var(--fg-mute); }
.skill-breadcrumb a { color: var(--fg-dim); text-decoration: none; }
.skill-reader-head { max-width: 1000px; }
.skill-reader-head h1 { font: 750 clamp(30px, 4vw, 55px)/1.12 var(--sans); letter-spacing: -.055em; margin: 16px 0 20px; }
.skill-reader-head > p { font-size: 17px; line-height: 1.8; color: var(--fg-dim); max-width: 800px; margin: 0; }
.skill-reader-meta { display: flex; flex-wrap: wrap; gap: 12px 22px; margin: 24px 0 30px; color: var(--fg-mute); font: 11px/1.6 var(--mono); }
.skill-toolbar { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; padding: 13px 0; margin-bottom: 38px; border-block: 1px solid var(--border); }
.skill-view-controls, .skill-file-actions { display: flex; flex-wrap: wrap; gap: 6px; }
.skill-toolbar button:hover, .skill-toolbar a:hover { border-color: var(--skill-ink); color: var(--skill-ink); text-decoration: none; }
.skill-toolbar button[aria-pressed="true"] { color: var(--skill-ink); border-color: var(--skill-ink); background: color-mix(in srgb, var(--skill-ink) 8%, var(--card)); }
.skill-reader-layout { display: grid; grid-template-columns: minmax(0, 1fr) 280px; gap: clamp(30px, 5vw, 85px); }
.skill-reader-body { min-width: 0; }
.skill-reader-body section { scroll-margin-top: 115px; }
.skill-reader-body h2 { font: 700 28px/1.3 var(--sans); letter-spacing: -.04em; margin: 0 0 17px; }
.skill-reader-body p, .skill-reader-body li { color: var(--fg-dim); font-size: 14px; line-height: 1.95; }
.skill-scope { max-width: 780px; }
.skill-review-steps { list-style: none; counter-reset: review; margin: 28px 0 40px; padding: 0; }
.skill-review-steps > li { position: relative; counter-increment: review; padding: 24px 0 25px 53px; border-top: 1px solid var(--border); }
.skill-review-steps > li::before { content: counter(review, decimal-leading-zero); position: absolute; left: 0; top: 28px; color: var(--skill-ink); font: 12px var(--mono); }
.skill-review-steps h3 { color: var(--fg); font: 700 19px/1.4 var(--sans); letter-spacing: -.025em; margin: 0 0 10px; }
.skill-review-steps p { margin: 0; max-width: 850px; }
.skill-output-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; border-block: 1px solid var(--border); padding: 30px 0; margin-bottom: 40px; }
.skill-output-grid h2 { font-size: 21px; }
.skill-output-grid ul, .skill-reader-aside ul { padding-left: 18px; margin: 0; }
.skill-output-grid li + li { margin-top: 12px; }
.skill-output-grid li::marker { color: var(--skill-ink); }
.skill-reader-aside { align-self: start; padding-left: 26px; border-left: 1px solid var(--border); }
.skill-reader-aside h2 { font-size: 17px; line-height: 1.5; letter-spacing: -.02em; margin: 0 0 20px; }
.skill-reader-aside li, .skill-reader-aside > p { font-size: 12px; line-height: 1.9; color: var(--fg-dim); }
.skill-reader-aside li + li { margin-top: 15px; }
.skill-reader-aside nav { display: grid; gap: 0; margin: 25px 0; padding-top: 15px; border-top: 1px solid var(--border); }
.skill-reader-aside nav a { padding: 10px 0; color: var(--fg-dim); font-size: 12px; text-decoration: none; }
.skill-reference-list { display: grid; margin: 22px 0 30px; }
.skill-reference-list a { display: flex; justify-content: space-between; align-items: baseline; gap: 20px; padding: 18px 0; border-top: 1px solid var(--border); text-decoration: none; }
.skill-reference-list a:hover { text-decoration: none; }
.skill-reference-list a > span { color: var(--fg); font-size: 14px; font-weight: 600; }
.skill-reference-list a:hover > span { color: var(--skill-ink); }
.skill-reference-list small { color: var(--fg-mute); font-size: 11px; flex-shrink: 0; max-width: 35%; }
.skill-models { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; margin: 20px 0 35px; }
.skill-models a { border: 1px solid var(--border); border-radius: 10px; overflow: hidden; color: var(--fg); text-decoration: none; background: var(--card); }
.skill-models a:hover { border-color: var(--skill-ink); text-decoration: none; }
.skill-models img { display: block; width: 100%; height: auto; aspect-ratio: 1.8; object-fit: contain; background: #f6f3ec; }
.skill-models span { display: block; padding: 15px; font-size: 12px; line-height: 1.7; }
.skill-reader-body .skill-provenance { font-size: 11px; border-top: 1px solid var(--border); padding: 25px 0; margin: 30px 0 0; }
.skill-next { display: grid; gap: 10px; padding: 25px; border: 1px solid var(--border); border-radius: 10px; text-decoration: none; }
.skill-next:hover { text-decoration: none; border-color: var(--skill-ink); }
.skill-next span { color: var(--fg-mute); font-size: 11px; }
.skill-next strong { font-size: 18px; color: var(--fg); }
.skill-raw p { color: var(--fg-dim); font-size: 12px; }
.skill-raw pre { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 25px; white-space: pre-wrap; overflow-wrap: anywhere; font: 12px/1.9 var(--mono); color: var(--fg-dim); }
.skills-library :focus-visible, .skill-reader :focus-visible { outline: 2px solid var(--skill-ink, var(--ink-copper)); outline-offset: 4px; }
@media (min-width: 1750px) { .skills-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); } }
@media (max-width: 1200px) { .skills-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } .skills-heading { gap: 28px; } .skill-reader-layout { grid-template-columns: minmax(0, 1fr) 225px; gap: 32px; } }
@media (max-width: 780px) { .skills-heading { grid-template-columns: 1fr; padding-top: 0; gap: 26px; } .skills-edition { display: none; } .skill-reader-layout { grid-template-columns: 1fr; } .skill-reader-aside { grid-row: 1; padding: 20px; border: 1px solid var(--border); border-radius: 10px; } .skill-reader-aside nav, .skill-reader-aside > p { display: none; } .skill-reader-aside ul { display: grid; gap: 10px; } .skill-reader-aside li + li { margin-top: 0; } .skill-reader-meta { font-size: 10px; } .skill-breadcrumb { margin-bottom: 26px; } .skills-use { grid-template-columns: 1fr; gap: 18px; } }
@media (max-width: 540px) { .skills-grid, .skill-output-grid, .skill-models { grid-template-columns: 1fr; } .skills-heading h1 { font-size: 41px; } .skills-intro { font-size: 14px; } .skills-search { max-width: none; } .skills-categories button { font-size: 11px; padding-inline: 10px; } .skill-card { padding: 22px 20px 0; } .skill-card h3 { font-size: 23px; } .skill-toolbar button, .skill-toolbar a { padding: 10px; font-size: 11px; } .skill-reader-head > p { font-size: 15px; } .skill-review-steps > li { padding-left: 38px; } .skill-reference-list a { display: grid; gap: 7px; } .skill-reference-list small { max-width: none; } .skill-raw pre { padding: 15px; font-size: 11px; } }