/* Blog: article list (blog.html) and article page (blog-post.html).
   Loaded after info-page.css and reuses its tokens, lede, buttons, footer and
   reveal motion. Articles themselves come from WordPress at run time (blog.js). */

/* ---------- List page ---------- */
.blog-lede .info-lede-foot{display:block;border-top:0;margin-top:28px;padding-top:0}
.blog-lede .info-lede-foot p{max-width:30em;color:var(--body);font-size:20px;font-weight:400;line-height:1.6;letter-spacing:0}

/* Latest article */
.blog-feature{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,1fr);align-items:center;gap:56px;margin-bottom:88px;color:inherit;text-decoration:none}
.blog-feature-media{position:relative;aspect-ratio:16/9;border-radius:24px;overflow:hidden;background:var(--pale);box-shadow:0 40px 70px -46px rgba(17,46,99,.6)}
.blog-feature-media img,.blog-card-media img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:scale .6s var(--ease)}
.blog-feature h2{margin-top:14px;color:var(--ink);font-size:clamp(28px,2.9vw,40px);font-weight:700;line-height:1.14;letter-spacing:-.035em;text-wrap:balance}
.blog-feature p{margin-top:18px;font-size:17px;line-height:1.65;display:-webkit-box;-webkit-line-clamp:4;-webkit-box-orient:vertical;overflow:hidden}
.blog-more{display:inline-flex;align-items:center;gap:12px;margin-top:28px;color:var(--ink);font-size:15px;font-weight:600}
.blog-meta{display:flex;flex-wrap:wrap;align-items:center;gap:6px 12px;color:var(--secondary);font-size:14px;line-height:1.5}
.blog-meta b{color:var(--blue);font-weight:600}
.blog-meta i{width:4px;height:4px;border-radius:50%;background:#a9bdd9}
.blog-chip{display:inline-flex;align-items:center;padding:4px 12px;border-radius:999px;background:var(--blue);color:#fff;font-size:13px;font-weight:600;line-height:1.5}
@media(hover:hover){
  .blog-feature:hover img,.blog-card:hover img{scale:1.04}
  .blog-feature:hover h2,.blog-card:hover h3{color:var(--blue)}
  .blog-feature:hover .info-arrow{translate:3px -3px;background:var(--ink)}
}
.blog-feature:focus-visible,.blog-card:focus-visible{outline:3px solid var(--blue);outline-offset:6px;border-radius:20px}

/* Filters */
.blog-tools{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px 24px;margin-bottom:40px;padding-top:36px;border-top:1px solid var(--line)}
.blog-filters{display:flex;flex-wrap:wrap;gap:8px}
.blog-filter{min-height:44px;padding:9px 18px;border:1px solid var(--line-strong);border-radius:999px;background:#fff;color:var(--ink);font:600 15px/1.4 Inter,Arial,sans-serif;cursor:pointer;transition:background .2s,border-color .2s,color .2s}
.blog-filter small{margin-left:6px;color:var(--secondary);font-size:13px;font-weight:500}
.blog-filter:hover{border-color:var(--blue)}
.blog-filter[aria-pressed=true]{border-color:var(--blue);background:var(--blue);color:#fff}
.blog-filter[aria-pressed=true] small{color:#dce9ff}
.blog-find{display:flex;gap:10px}
.blog-search{display:flex;align-items:center;gap:10px;width:260px;min-height:46px;padding:0 14px;border:1px solid var(--line-strong);border-radius:12px;background:#fff}
.blog-search:focus-within,.blog-year:focus-visible{outline:3px solid var(--blue);outline-offset:2px}
.blog-search svg{flex:none;width:18px;height:18px;color:var(--blue)}
.blog-search input{width:100%;min-width:0;border:0;outline:0;background:transparent;color:var(--ink);font:400 15px/1.5 Inter,Arial,sans-serif}
.blog-search input::placeholder{color:#5d7391;opacity:1}
.blog-search input::-webkit-search-cancel-button{display:none}
.blog-year{min-height:46px;padding:0 12px;border:1px solid var(--line-strong);border-radius:12px;background:#fff;color:var(--ink);font:500 15px/1.5 Inter,Arial,sans-serif}

/* Cards */
.blog-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:48px 28px;margin:0;padding:0;list-style:none}
.blog-card{display:flex;flex-direction:column;height:100%;color:inherit;text-decoration:none}
.blog-card-media{position:relative;aspect-ratio:16/9;margin-bottom:20px;border-radius:16px;overflow:hidden;background:var(--pale)}
.blog-card h3{margin-top:10px;color:var(--ink);font-size:21px;font-weight:650;line-height:1.3;letter-spacing:-.02em;transition:color .2s;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.blog-card p{margin-top:10px;font-size:15px;line-height:1.6;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.blog-feature h2{transition:color .2s}

/* Loading, empty and error states */
.blog-skeleton .blog-card-media,.blog-skeleton span{display:block;border-radius:16px;background:linear-gradient(100deg,#e6effc 30%,#f3f8ff 50%,#e6effc 70%);background-size:200% 100%;animation:blog-shimmer 1.4s linear infinite}
.blog-skeleton span{height:14px;margin-top:12px;border-radius:7px}
.blog-skeleton span:nth-of-type(1){width:38%}
.blog-skeleton span:nth-of-type(2){height:22px;width:92%}
.blog-skeleton span:nth-of-type(3){width:70%}
@keyframes blog-shimmer{to{background-position:-200% 0}}
.blog-status{max-width:560px;padding:8px 0 24px}
.blog-status h2{color:var(--ink);font-size:26px;font-weight:700;line-height:1.25;letter-spacing:-.025em}
.blog-status p{margin-top:12px;font-size:17px}
.blog-status .blog-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
.blog-button{min-height:56px;padding:14px 24px;border:1px solid var(--blue);border-radius:12px;background:#fff;color:var(--blue);font:600 16px/1.4 Inter,Arial,sans-serif;text-decoration:none;cursor:pointer;transition:background .2s,color .2s}
.blog-button:hover{background:var(--blue);color:#fff}
.blog-pager{display:flex;flex-direction:column;align-items:center;gap:14px;margin-top:64px}
.blog-pager p{color:var(--secondary);font-size:14px}

/* ---------- Article page ---------- */
.blog-article-lede{z-index:1;padding:136px 0 0;overflow:visible}
.blog-article-lede::before{content:none}
.blog-article-lede h1{max-width:24em;font-size:clamp(28px,3vw,44px);line-height:1.14;letter-spacing:-.035em}
.blog-article-lede .blog-meta{margin-bottom:22px}
.blog-article-lede .blog-meta a{color:var(--blue);font-weight:600;text-decoration:none}
.blog-article-lede .blog-meta a:hover{text-decoration:underline}
.blog-cover{position:relative;z-index:1;aspect-ratio:16/9;margin:56px 0 -120px;border-radius:24px;overflow:hidden;background:var(--pale);box-shadow:0 44px 70px -46px rgba(17,46,99,.6)}
.blog-cover img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.blog-article-lede.has-no-cover{padding-bottom:72px}
.blog-layout{display:grid;grid-template-columns:240px minmax(0,720px);justify-content:space-between;align-items:start;gap:72px;padding-top:184px}
.has-no-cover+.info-section .blog-layout{padding-top:0}
.blog-aside{position:sticky;top:112px;max-height:calc(100svh - 136px);overflow:auto}
.blog-aside .info-toc{position:static;max-height:none;overflow:visible}
.blog-share{margin-top:32px;padding-top:24px;border-top:1px solid var(--line)}
.blog-share p{margin-bottom:12px;color:var(--secondary);font-size:14px}
.blog-share ul{display:flex;flex-wrap:wrap;gap:8px;margin:0;padding:0;list-style:none}
.blog-share :is(a,button){display:inline-flex;align-items:center;min-height:36px;padding:6px 14px;border:1px solid var(--line-strong);border-radius:999px;background:#fff;color:var(--ink);font:600 13px/1.4 Inter,Arial,sans-serif;text-decoration:none;cursor:pointer;transition:border-color .2s,color .2s}
.blog-share :is(a,button):hover{border-color:var(--blue);color:var(--blue)}

/* Article body: WordPress content, restyled */
.blog-body{min-width:0;font-size:18px;line-height:1.75;overflow-wrap:anywhere}
.blog-body>*+*{margin-top:22px}
.blog-body :is(h2,h3){margin-top:64px;color:var(--ink);font-size:clamp(26px,2.5vw,32px);font-weight:700;line-height:1.2;letter-spacing:-.03em;scroll-margin-top:112px;text-wrap:balance}
.blog-body h4{margin-top:40px;color:var(--ink);font-size:22px;font-weight:650;line-height:1.3;letter-spacing:-.02em}
.blog-body :is(h5,h6){margin-top:32px;color:var(--ink);font-size:18px;font-weight:650;line-height:1.4}
.blog-body>:first-child{margin-top:0}
.blog-body :is(strong,b){color:var(--ink);font-weight:600}
.blog-body a{color:var(--blue)}
.blog-body :is(ul,ol){padding-left:24px}
.blog-body li{margin-block:10px}
.blog-body li::marker{color:var(--numeral);font-weight:600}
.blog-body img{display:block;max-width:100%;height:auto;margin-inline:auto;border-radius:16px}
.blog-body p:has(>img:only-child){margin-block:36px}
.blog-body hr{height:1px;margin-block:48px;border:0;background:var(--line)}
.blog-body blockquote{margin:36px 0;padding:6px 0 6px 24px;border-left:3px solid var(--blue);color:var(--ink);font-size:22px;font-weight:500;line-height:1.45;letter-spacing:-.015em}
.blog-embed{position:relative;aspect-ratio:16/9;margin-block:36px;border-radius:16px;overflow:hidden;background:var(--ink)}
.blog-embed iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.blog-table{margin-block:36px;border:1px solid var(--line);border-radius:16px;overflow-x:auto}
.blog-table table{width:100%;border-collapse:collapse;font-size:15px;line-height:1.5}
.blog-table :is(th,td){padding:13px 16px;border-bottom:1px solid var(--line-soft);text-align:left;vertical-align:top}
.blog-table tr:first-child :is(th,td){background:var(--tint);color:var(--ink);font-weight:600}
.blog-table tr:last-child :is(th,td){border-bottom:0}
.blog-note{margin-top:48px;padding-top:24px;border-top:1px solid var(--line);color:var(--secondary);font-size:15px;line-height:1.65}

/* Subscribe card (the newsletter form that WordPress places in each article) */
.blog-subscribe{margin-top:56px;padding:36px;border-radius:24px;background:var(--tint)}
.blog-subscribe label{display:block;color:var(--ink);font-size:clamp(22px,2vw,26px);font-weight:650;line-height:1.3;letter-spacing:-.02em}
.blog-subscribe-row{display:flex;gap:12px;margin-top:20px}
.blog-subscribe input[type=email]{flex:1;min-width:0;min-height:56px;padding:13px 16px;border:1px solid var(--line-strong);border-radius:12px;background:#fff;color:var(--ink);font:400 16px/1.5 Inter,Arial,sans-serif}
.blog-subscribe input[type=email]:focus-visible{outline:0;border-color:var(--blue);box-shadow:0 0 0 3px #1261df40}
.blog-subscribe-message{margin-top:14px;font-size:14px}

/* More articles */
.blog-related .info-heading{margin-bottom:40px}

@media(max-width:1100px){
  .blog-feature{gap:36px}
  .blog-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:40px 24px}
  .blog-search{width:220px}
  .blog-layout{grid-template-columns:210px minmax(0,1fr);gap:44px}
}
@media(max-width:900px){
  .blog-feature{grid-template-columns:1fr;gap:28px;margin-bottom:64px}
  .blog-tools{align-items:stretch}
  .blog-find{width:100%}
  .blog-search{flex:1;width:auto}
  .blog-layout{grid-template-columns:1fr;gap:36px}
  .blog-aside{position:static;max-height:none}
  .blog-aside .info-toc{display:none}
  .blog-share{margin-top:0;padding-top:0;border-top:0}
}
@media(max-width:760px){
  .blog-lede .info-lede-foot p{font-size:17px}
  .blog-feature{margin-bottom:48px}
  .blog-feature-media{border-radius:18px}
  .blog-feature h2{font-size:26px}
  .blog-feature p{font-size:16px}
  .blog-tools{margin-bottom:28px;padding-top:28px}
  .blog-filters{flex-wrap:nowrap;margin-inline:-20px;padding-inline:20px;overflow-x:auto;scrollbar-width:none}
  .blog-filter{flex:none}
  .blog-grid{grid-template-columns:1fr;gap:36px}
  .blog-card h3{font-size:20px}
  .blog-pager{margin-top:44px}
  .blog-article-lede{padding-top:36px}
  .blog-article-lede h1{font-size:clamp(25px,6.6vw,32px)}
  .blog-cover{margin:32px 0 -64px;border-radius:18px}
  .blog-layout{padding-top:104px}
  .blog-body{font-size:17px}
  .blog-body :is(h2,h3){margin-top:48px;font-size:24px;scroll-margin-top:84px}
  .blog-body h4{font-size:20px}
  .blog-body blockquote{font-size:19px}
  .blog-subscribe{padding:26px 22px;border-radius:20px}
  .blog-subscribe-row{flex-direction:column}
  .blog-subscribe .info-cta{width:100%}
}
@media(prefers-reduced-motion:reduce){
  .blog-feature-media img,.blog-card-media img,.blog-card h3,.blog-feature h2,.blog-filter,.blog-button{transition:none}
  .blog-skeleton .blog-card-media,.blog-skeleton span{animation:none}
}

/* Homework Help (data-cover="inline"): the featured image is the question
   itself, so cards show it whole and the article opens with it uncropped. */
.blog-questions :is(.blog-feature-media,.blog-card-media){border:1px solid var(--line-soft);background:#fff}
.blog-questions :is(.blog-feature-media,.blog-card-media) img{inset:14px;width:calc(100% - 28px);height:calc(100% - 28px);object-fit:contain}
.blog-question{margin:0 0 40px;padding:24px;border:1px solid var(--line-soft);border-radius:20px;background:#fff}
.blog-body .blog-question img{max-height:520px;width:auto;border-radius:0}
.blog-questions .blog-body blockquote{font-size:18px;font-weight:400;line-height:1.7;letter-spacing:0}
.blog-questions .blog-body pre{padding:20px 22px;border-radius:14px;background:var(--tint);color:var(--ink);font:inherit;white-space:pre-wrap;overflow-wrap:anywhere}
@media(max-width:760px){.blog-question{margin-bottom:28px;padding:14px;border-radius:16px}}

/* Deep blue first screens on the list and article pages (.is-deep, info-page.css).
   The "read" link follows the homepage's underlined link instead of the round arrow. */
.blog-lede.is-deep .info-lede-foot p{color:#e3ecff}
.blog-article-lede.is-deep .blog-meta{color:#dbe7ff}
.blog-article-lede.is-deep .blog-meta :is(a,b){color:#fff}
.blog-article-lede.is-deep .blog-meta i{background:#8fb2f2}
.blog-article-lede.is-deep .blog-meta a:focus-visible{outline:2px solid #fff;outline-offset:3px;border-radius:2px}
.blog-more{position:relative;gap:0;min-height:48px;margin-top:18px;padding:10px 0 16px;font-size:16px;line-height:1.4;letter-spacing:-.015em;transition:color .18s ease}
.blog-more .info-arrow{display:none}
.blog-more::after{content:"";position:absolute;left:0;bottom:4px;width:32px;height:2px;border-radius:1px;background:var(--blue);transition:width .22s cubic-bezier(.22,1,.36,1)}
@media(hover:hover){.blog-feature:hover .blog-more{color:var(--blue)}.blog-feature:hover .blog-more::after{width:100%}}
@media(max-width:760px){.blog-more{min-height:44px;font-size:14px}.blog-button{min-height:52px}}