/* Flintglade learning library: catalog and free-download surface. */
.library-hero { position: relative; display: grid; grid-template-columns: minmax(0,1.25fr) minmax(320px,.75fr); gap: clamp(3rem,8vw,8rem); align-items: center; min-height: min(820px,calc(100svh - 74px)); width: min(100%,var(--max)); padding: clamp(5rem,9vw,9rem) clamp(1.25rem,6vw,6rem); margin: auto; overflow: hidden; border-bottom: 1px solid var(--line); }
.library-hero::before { position: absolute; inset: 0; content: ""; pointer-events: none; background: radial-gradient(700px 480px at 85% 46%,rgba(115,230,174,.07),transparent 70%),linear-gradient(120deg,rgba(255,23,69,.04),transparent 44%); }
.library-hero-copy,.library-hero-index { position: relative; z-index: 1; }
.library-hero h1 { max-width: 980px; margin: 1rem 0 1.3rem; font-size: clamp(3.7rem,8.2vw,8.3rem); font-weight: 270; line-height: .88; letter-spacing: -.078em; }
.library-hero-copy > p { max-width: 780px; margin: 0; color: #c5c8ce; font-size: clamp(1.04rem,1.7vw,1.3rem); }
.library-domain-line { display: flex; flex-wrap: wrap; padding: .85rem 0; margin: 2rem 0 0; list-style: none; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.library-domain-line li { padding: 0 1rem; border-right: 1px solid var(--line); color: var(--bio); font: 700 .63rem var(--mono); letter-spacing: .07em; text-transform: uppercase; }.library-domain-line li:first-child { padding-left: 0; }.library-domain-line li:last-child { border: 0; }
.library-hero-actions { display: flex; flex-wrap: wrap; gap: .7rem; margin-top: 2rem; }
.library-hero-index { padding: 1.4rem; border: 1px solid var(--line); background: rgba(3,3,5,.8); box-shadow: 0 28px 100px rgba(0,0,0,.45); }
.library-hero-index dl { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); margin: 1.5rem 0; border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.library-hero-index dl div { min-height: 116px; padding: 1rem; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.library-hero-index dt { color: var(--dim); font: 650 .58rem var(--mono); text-transform: uppercase; }.library-hero-index dd { margin: .5rem 0 0; color: var(--bio); font: 350 clamp(2rem,4vw,3.7rem) var(--sans); }
.library-hero-index p { margin: 0; color: var(--muted); font-size: .78rem; }
.library-local-nav { position: sticky; top: 74px; z-index: 40; display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); border-bottom: 1px solid var(--line); background: rgba(2,2,3,.94); backdrop-filter: blur(14px); }
.library-local-nav a { display: flex; min-height: 50px; align-items: center; justify-content: center; gap: .6rem; border-right: 1px solid var(--line); color: var(--muted); font: 650 .63rem var(--mono); text-decoration: none; text-transform: uppercase; }.library-local-nav a:hover { color: var(--bio); }.library-local-nav span { color: var(--brand-bright); }
.library-section { width: min(100%,var(--max)); padding: clamp(4.5rem,9vw,8rem) clamp(1.25rem,5vw,5rem); margin: auto; border-bottom: 1px solid var(--line); }
.library-section-heading { display: grid; grid-template-columns: minmax(0,1fr) minmax(280px,520px); gap: clamp(2rem,6vw,6rem); align-items: end; margin-bottom: clamp(2.5rem,5vw,4.5rem); }.library-section-heading h2 { max-width: 900px; margin: .7rem 0 0; font-size: clamp(2.7rem,6vw,6rem); font-weight: 300; line-height: .95; letter-spacing: -.064em; }.library-section-heading > p { margin: 0; padding-left: 1.2rem; border-left: 1px solid var(--brand); color: var(--muted); }
.library-open-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 1px; border: 1px solid var(--line); background: var(--line); }
.library-open-grid a { display: flex; min-height: 340px; flex-direction: column; padding: clamp(1.5rem,4vw,3rem); background: linear-gradient(145deg,rgba(115,230,174,.035),transparent 38%),#040406; text-decoration: none; }.library-open-grid a:hover { background: linear-gradient(145deg,rgba(115,230,174,.08),transparent 48%),#050508; }.library-open-grid span { color: var(--bio); font: 700 .59rem var(--mono); letter-spacing: .09em; }.library-open-grid h3 { margin: auto 0 1rem; color: var(--ink); font-size: clamp(1.8rem,3.5vw,3.4rem); font-weight: 390; line-height: .98; letter-spacing: -.052em; }.library-open-grid p { max-width: 640px; color: var(--muted); font-size: .83rem; }.library-open-grid strong { color: var(--bio); font: 700 .64rem var(--mono); }
.library-free-downloads { display: grid; grid-template-columns: minmax(240px,.6fr) minmax(0,1.4fr); gap: clamp(2rem,5vw,5rem); padding-top: clamp(4rem,8vw,7rem); }.library-free-downloads header h3 { margin: .8rem 0; font-size: clamp(2rem,4vw,4rem); font-weight: 350; line-height: 1; letter-spacing: -.05em; }.library-free-downloads header p { color: var(--muted); }
.library-free-downloads ol { padding: 0; margin: 0; list-style: none; border-top: 1px solid var(--line); }.library-free-downloads li a { display: grid; grid-template-columns: 2.5rem minmax(0,1fr) auto; gap: 1rem; align-items: center; min-height: 64px; padding: .75rem; border-bottom: 1px solid var(--line); color: var(--ink); text-decoration: none; }.library-free-downloads li a:hover { background: rgba(115,230,174,.035); }.library-free-downloads li span,.library-free-downloads li small { color: var(--bio); font: 700 .58rem var(--mono); }.library-free-downloads li strong { font-size: .8rem; font-weight: 600; }
.library-filter { display: grid; grid-template-columns: minmax(240px,1.4fr) repeat(2,minmax(170px,.55fr)) auto; gap: .75rem; align-items: end; padding: 1rem; border: 1px solid var(--line); background: var(--surface); }.library-filter label { display: grid; gap: .4rem; color: var(--brand-bright); font: 700 .6rem var(--mono); letter-spacing: .07em; text-transform: uppercase; }.library-filter input,.library-filter select { min-height: 46px; width: 100%; padding: .65rem .75rem; border: 1px solid var(--line); border-radius: 0; outline: 0; background: #020203; color: var(--ink); font: .82rem var(--sans); }.library-filter input:focus,.library-filter select:focus { border-color: var(--brand); }.library-filter button { min-height: 46px; padding: .7rem; border: 0; background: transparent; color: var(--brand-bright); font: 700 .62rem var(--mono); text-decoration: underline; text-underline-offset: 4px; }
.library-filter input:focus-visible,.library-filter select:focus-visible { outline: 3px solid var(--brand-bright); outline-offset: 2px; }
.library-result-bar { display: flex; justify-content: space-between; gap: 1rem; padding: .9rem .2rem; border-bottom: 1px solid var(--line); color: var(--muted); font: .64rem var(--mono); }.library-result-bar p { margin: 0; }.library-result-bar span { color: var(--dim); text-transform: uppercase; }
.library-state { display: flex; min-height: 170px; align-items: center; justify-content: center; gap: 1rem; margin-top: 1rem; padding: 2rem; border: 1px solid var(--line); background: var(--surface); }.library-state[hidden] { display: none; }.library-state > span { color: var(--bio); font: 700 1.5rem var(--mono); }.library-state p { margin: .25rem 0 0; color: var(--muted); }.library-state.is-error { border-color: rgba(255,103,128,.36); }.library-state .button { margin-left: 1rem; }
.library-empty { padding: 4rem 2rem; margin-top: 1rem; border: 1px solid var(--line); text-align: center; }.library-empty[hidden] { display: none; }.library-empty > span { color: var(--brand-bright); font: 700 1.3rem var(--mono); }.library-empty h3 { margin: 1rem 0 .4rem; font-size: 2rem; }.library-empty p { color: var(--muted); }
.library-asset-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 1rem; padding-top: 1.25rem; }.library-asset-grid[hidden] { display: none; }.library-asset-card { display: flex; min-height: 430px; flex-direction: column; padding: 1.3rem; border: 1px solid var(--line); background: linear-gradient(150deg,rgba(115,230,174,.025),transparent 36%),var(--surface); }.library-asset-card:hover { border-color: rgba(115,230,174,.35); }.library-asset-card header { display: flex; justify-content: space-between; gap: 1rem; }.library-asset-card header span,.library-access-badge { color: var(--bio); font: 700 .57rem var(--mono); letter-spacing: .07em; text-transform: uppercase; }.library-access-badge { padding: .3rem .42rem; border: 1px solid rgba(115,230,174,.2); }.library-access-badge.is-pack { color: var(--amber); border-color: rgba(255,198,103,.25); }.library-asset-card h3 { margin: 2.4rem 0 .8rem; font-size: clamp(1.55rem,2.8vw,2.5rem); font-weight: 400; line-height: 1.04; letter-spacing: -.045em; }.library-asset-card > p { color: var(--muted); font-size: .8rem; }.library-asset-meta { display: flex; flex-wrap: wrap; gap: .35rem; margin-top: 1rem; }.library-asset-meta span { padding: .3rem .4rem; border: 1px solid var(--line); color: var(--dim); font: .54rem var(--mono); }.library-asset-card footer { display: flex; justify-content: space-between; gap: 1rem; align-items: center; padding-top: 1rem; margin-top: auto; border-top: 1px solid var(--line); }.library-asset-card footer small { color: var(--dim); font: .56rem var(--mono); }.library-asset-card footer a { color: var(--bio); font: 700 .62rem var(--mono); }
.library-noscript { padding: 1rem; border: 1px solid var(--line); color: var(--muted); }
.library-pack-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 1rem; }.library-pack-grid article { display: flex; min-height: 400px; flex-direction: column; padding: clamp(1.5rem,4vw,3rem); border: 1px solid var(--line); background: var(--surface); }.library-pack-grid article > span { color: var(--bio); font: 700 .59rem var(--mono); letter-spacing: .1em; }.library-pack-grid h3 { max-width: 580px; margin: auto 0 1rem; font-size: clamp(2rem,4vw,4rem); font-weight: 350; line-height: .98; letter-spacing: -.055em; }.library-pack-grid p { max-width: 620px; color: var(--muted); }.library-pack-grid a { color: var(--bio); font: 700 .65rem var(--mono); }.library-pack-grid .is-complete { grid-column: 1 / -1; min-height: 430px; border-color: rgba(255,23,69,.3); background: radial-gradient(600px 360px at 90% 10%,rgba(255,23,69,.08),transparent 68%),var(--surface); }.library-pack-grid .is-complete > span,.library-pack-grid .is-complete a { color: var(--brand-bright); }
.library-calculus { display: flex; justify-content: space-between; gap: 2rem; align-items: end; padding: clamp(1.5rem,4vw,3rem); margin-top: 1rem; border: 1px solid var(--line); background: linear-gradient(100deg,rgba(85,216,255,.045),transparent 50%); }.library-calculus h3 { margin: .8rem 0 .5rem; font-size: clamp(1.6rem,3vw,2.8rem); font-weight: 420; letter-spacing: -.04em; }.library-calculus p { max-width: 760px; margin: 0; color: var(--muted); }
.library-mcat { display: grid; grid-template-columns: auto .7fr 1.25fr auto; gap: clamp(1.5rem,4vw,4rem); align-items: center; width: min(100%,var(--max)); padding: clamp(3rem,6vw,5rem) clamp(1.25rem,5vw,5rem); margin: auto; border-bottom: 1px solid var(--line); background: linear-gradient(105deg,rgba(173,136,255,.06),transparent 52%); }.library-mcat-index { color: var(--violet); font-size: 2rem; }.library-mcat h2 { margin: .6rem 0 0; font-size: clamp(2rem,4vw,4rem); font-weight: 350; letter-spacing: -.05em; }.library-mcat p { margin: 0; color: #c2bdcf; }.library-mcat > a { color: #c4a9ff; font: 700 .64rem var(--mono); white-space: nowrap; }
.library-edition-method ol { display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); padding: 0; margin: 0; list-style: none; border-top: 1px solid var(--line); border-left: 1px solid var(--line); }.library-edition-method li { min-height: 290px; padding: 1.5rem; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }.library-edition-method li > span { color: var(--bio); font: 700 .6rem var(--mono); }.library-edition-method li strong { display: block; margin-top: 5rem; font-size: 1.25rem; }.library-edition-method li p { color: var(--muted); font-size: .78rem; }
@media (max-width: 1050px) { .library-hero { grid-template-columns: 1fr; min-height: 0; }.library-hero-index { max-width: 720px; }.library-asset-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }.library-free-downloads { grid-template-columns: 1fr; }.library-edition-method ol { grid-template-columns: repeat(2,minmax(0,1fr)); }.library-mcat { grid-template-columns: auto 1fr; }.library-mcat p,.library-mcat > a { grid-column: 2; white-space: normal; } }
@media (max-width: 760px) { .library-local-nav { position: static; grid-template-columns: repeat(2,minmax(0,1fr)); }.library-section-heading { grid-template-columns: 1fr; }.library-section-heading > p { padding: 1rem 0 0; border-left: 0; border-top: 1px solid var(--brand); }.library-open-grid,.library-pack-grid,.library-asset-grid { grid-template-columns: 1fr; }.library-pack-grid .is-complete { grid-column: auto; }.library-filter { grid-template-columns: 1fr 1fr; }.library-filter label:first-child { grid-column: 1 / -1; }.library-calculus { display: grid; align-items: start; } }
@media (max-width: 520px) { .library-hero h1 { font-size: clamp(3.05rem,15.5vw,5.2rem); }.library-domain-line { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); }.library-domain-line li { padding: .4rem 0; border: 0; }.library-filter,.library-edition-method ol { grid-template-columns: 1fr; }.library-filter label:first-child { grid-column: auto; }.library-free-downloads li a { grid-template-columns: 2rem 1fr; }.library-free-downloads li small { display: none; }.library-open-grid a,.library-pack-grid article { min-height: 310px; }.library-mcat { grid-template-columns: 1fr; }.library-mcat p,.library-mcat > a { grid-column: 1; } }
@media (prefers-reduced-motion: reduce) { .library-open-grid a,.library-asset-card { transition: none; } }