/* Tavient AI blog pages. Same brand as the homepage (navy, porcelain, emerald),
   tuned for long reading: a 68ch measure, generous leading, quiet chrome. */
:root {
  --canvas: #08131E; --surface: #0F2234; --ink: #EEF4F7; --soft: #97ABBC; --body: #C9D6E0;
  --accent: #12B892; --accent-ink: #03140E;
  --line: color-mix(in oklab, var(--ink) 12%, transparent);
  --line-strong: color-mix(in oklab, var(--ink) 22%, transparent);
  --display: "Outfit", "Geist", system-ui, sans-serif;
  --text: "Geist", system-ui, sans-serif;
  --mono: "Geist Mono", ui-monospace, monospace;
  --gutter: clamp(1.25rem, 5vw, 5.5rem);
  --bar-h: 4rem;
  --ease: cubic-bezier(0.23, 1, 0.32, 1);
}
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body { margin: 0; background: var(--canvas); color: var(--ink); font: 400 1.0625rem/1.7 var(--text); -webkit-font-smoothing: antialiased; overflow-x: clip; }
img { max-width: 100%; height: auto; display: block; }
::selection { background: var(--accent); color: var(--accent-ink); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 6px; }
[hidden] { display: none !important; }
.wrap { width: 100%; max-width: 76rem; margin-inline: auto; padding-inline: var(--gutter); }
.skip { position: fixed; left: 1rem; top: 1rem; z-index: 100; padding: .5rem 1rem; border-radius: 999px; background: var(--accent); color: var(--accent-ink); font-weight: 600; transform: translateY(-200%); }
.skip:focus-visible { transform: none; }

/* buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; height: 3rem; padding: 0 1.45rem; border-radius: 999px; font: 600 .95rem/1 var(--text); text-decoration: none; white-space: nowrap; border: 1px solid transparent; transition: background-color 160ms var(--ease), transform 120ms var(--ease); }
.btn:active { transform: scale(.97); }
.btn--primary { background: var(--accent); color: var(--accent-ink); }
.btn--small { height: 2.5rem; padding: 0 1.1rem; }
@media (hover: hover) and (pointer: fine) { .btn--primary:hover { background: color-mix(in oklab, var(--accent) 86%, white); } }

/* top bar: logo always top left */
.bar { position: sticky; top: 0; z-index: 60; height: var(--bar-h); display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 1.5rem; padding-inline: var(--gutter); background: var(--canvas); transition: box-shadow 300ms var(--ease); }
.bar.is-solid { box-shadow: inset 0 -1px 0 var(--line); }
.bar__brand { display: inline-flex; align-items: center; gap: .65rem; color: var(--ink); text-decoration: none; font: 600 1.12rem/1 var(--display); }
.bar__brand svg { width: 2.1rem; height: 2.1rem; }
.bar__nav ul { display: flex; justify-content: center; gap: clamp(1rem, 2.4vw, 2.4rem); list-style: none; margin: 0; padding: 0; }
.bar__nav a { position: relative; display: inline-block; padding: .5rem 0; font: 500 .9rem/1 var(--text); color: var(--soft); text-decoration: none; }
.bar__nav a[aria-current="true"] { color: var(--ink); }
.bar__nav a[aria-current="true"]::after { content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 2px; border-radius: 2px; background: var(--accent); }
@media (hover: hover) and (pointer: fine) { .bar__nav a:hover { color: var(--ink); } }
.bar__end { display: flex; align-items: center; gap: .75rem; }
.bar__menu { display: none; }

/* blog index + cards */
.blog-head { padding-block: clamp(3.5rem, 8vw, 6.5rem) clamp(2rem, 4vw, 3rem); }
.eyebrow { margin: 0 0 1rem; font: 500 .78rem/1 var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--accent); }
h1 { margin: 0; font: 500 clamp(2.3rem, 1.4rem + 3.4vw, 4.2rem)/1.04 var(--display); letter-spacing: -.035em; text-wrap: balance; }
.post__lede { margin: 1.1rem 0 0; max-width: 46ch; font-size: clamp(1.1rem, 1rem + .4vw, 1.3rem); line-height: 1.5; color: var(--soft); text-wrap: pretty; }
.meta { margin: 0 0 .9rem; font: 500 .8rem/1.4 var(--mono); letter-spacing: .03em; color: var(--soft); }
.meta a { color: var(--accent); text-decoration: none; }
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 21rem), 1fr)); gap: 1.25rem; }
.card { border: 1px solid var(--line-strong); border-radius: 18px; background: color-mix(in oklab, var(--surface) 70%, transparent); transition: border-color 160ms var(--ease), transform 200ms var(--ease); }
.card__link { display: flex; flex-direction: column; height: 100%; padding: 1.6rem; color: inherit; text-decoration: none; }
.card h2 { margin: 0 0 .6rem; font: 500 1.4rem/1.2 var(--display); letter-spacing: -.02em; text-wrap: balance; }
.card p:not(.meta) { margin: 0 0 1.2rem; color: var(--soft); font-size: .98rem; line-height: 1.55; }
.card__more { margin-top: auto; color: var(--accent); font-weight: 600; font-size: .92rem; }
@media (hover: hover) and (pointer: fine) { .card:hover { border-color: color-mix(in oklab, var(--accent) 60%, transparent); transform: translateY(-2px); } }

/* article */
.post { padding-block: clamp(3rem, 7vw, 5.5rem) 0; }
.post__head { max-width: 50rem; }
.tags { display: flex; flex-wrap: wrap; gap: .45rem; list-style: none; margin: 1.4rem 0 0; padding: 0; }
.tags li { padding: .3rem .75rem; border-radius: 999px; border: 1px solid var(--line-strong); font: 500 .76rem/1.2 var(--mono); color: var(--soft); }
.post__cover { margin-top: 2.5rem; border-radius: 18px; width: 100%; max-width: 56rem; }
.prose { max-width: 42rem; margin-top: clamp(2.2rem, 5vw, 3.4rem); color: var(--body); font-size: 1.09rem; line-height: 1.78; }
.prose > * + * { margin-top: 1.15em; }
.prose > :first-child { margin-top: 0; }
.prose h2 { margin: 2.2em 0 0; color: var(--ink); font: 500 clamp(1.5rem, 1.25rem + 1vw, 2rem)/1.2 var(--display); letter-spacing: -.025em; }
.prose h3 { margin: 1.8em 0 0; color: var(--ink); font: 600 1.22rem/1.3 var(--display); letter-spacing: -.01em; }
.prose h2 + *, .prose h3 + * { margin-top: .6em; }
.prose p, .prose li { text-wrap: pretty; }
.prose strong { color: var(--ink); font-weight: 600; }
.prose a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: .22em; }
.prose ul, .prose ol { padding-left: 1.3rem; }
.prose li + li { margin-top: .45em; }
.prose li::marker { color: var(--accent); }
.prose blockquote { margin-inline: 0; padding: .3rem 0 .3rem 1.2rem; border-left: 2px solid var(--accent); color: var(--ink); font-size: 1.15rem; }
.prose code { font: .9em var(--mono); background: var(--surface); padding: .1em .35em; border-radius: 5px; }
.prose pre { background: var(--surface); padding: 1rem 1.2rem; border-radius: 12px; overflow-x: auto; }
.prose pre code { background: none; padding: 0; }
.prose img { border-radius: 14px; }
.prose hr { border: 0; height: 1px; background: var(--line); margin-block: 2.4em; }
.prose table { width: 100%; border-collapse: collapse; font-size: .97rem; display: block; overflow-x: auto; }
.prose th, .prose td { text-align: left; padding: .7rem .8rem; border-bottom: 1px solid var(--line); vertical-align: top; }
.prose th { color: var(--ink); font-weight: 600; }

/* call to action */
.cta { margin-block: clamp(3rem, 7vw, 4.5rem); max-width: 42rem; padding: clamp(1.6rem, 4vw, 2.4rem); border-radius: 20px; border: 1px solid color-mix(in oklab, var(--accent) 45%, transparent); background: color-mix(in oklab, var(--accent) 7%, var(--canvas)); }
.cta h2 { margin: 0 0 .6rem; font: 500 1.6rem/1.2 var(--display); letter-spacing: -.02em; }
.cta p { margin: 0 0 1.4rem; color: var(--soft); }
.more { padding-bottom: clamp(3rem, 7vw, 5rem); }
.more > h2 { margin: 0 0 1.4rem; font: 500 1.6rem/1.2 var(--display); letter-spacing: -.02em; }

/* footer */
.foot { margin-top: clamp(2rem, 5vw, 4rem); background: #060F18; border-top: 1px solid var(--line); padding: clamp(3rem, 6vw, 4.5rem) 0 1.5rem; }
.foot__wrap { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 2rem; }
.foot__wrap p { margin: .8rem 0 0; max-width: 34ch; color: var(--soft); font-size: .92rem; }
.foot__brand { display: inline-flex; align-items: center; gap: .6rem; color: var(--ink); text-decoration: none; font: 600 1.15rem/1 var(--display); }
.foot__brand svg { width: 1.8rem; height: 1.8rem; }
.foot__links { display: flex; flex-direction: column; gap: .6rem; align-items: flex-start; }
.foot__links a { color: var(--soft); text-decoration: none; font-size: .92rem; }
@media (hover: hover) and (pointer: fine) { .foot__links a:hover { color: var(--ink); } }
.foot__base { margin-top: 3rem; padding-top: 1rem; border-top: 1px solid var(--line); font-size: .8rem; color: var(--soft); }

/* phones */
@media (max-width: 860px) {
  :root { --bar-h: 3.75rem; }
  .bar { gap: .75rem; }
  .bar__end { grid-column: 3; }
  .bar__brand { font-size: 1.02rem; }
  .bar__brand svg { width: 1.9rem; height: 1.9rem; }
  .bar__end .btn { height: 2.4rem; padding: 0 .95rem; font-size: .82rem; }
  .bar__menu { display: grid; place-content: center; gap: 5px; width: 2.6rem; height: 2.6rem; border-radius: 50%; border: 1px solid var(--line-strong); background: none; cursor: pointer; padding: 0; }
  .bar__menu span { display: block; width: 16px; height: 2px; border-radius: 2px; background: var(--ink); transition: transform 240ms var(--ease); }
  .menu-open .bar__menu span:first-child { transform: translateY(3.5px) rotate(45deg); }
  .menu-open .bar__menu span:last-child { transform: translateY(-3.5px) rotate(-45deg); }
  .bar__nav { position: fixed; left: 0; right: 0; top: var(--bar-h); background: var(--canvas); border-bottom: 1px solid var(--line); padding: .75rem var(--gutter) 1.5rem; opacity: 0; visibility: hidden; transform: translateY(-8px); transition: opacity 240ms var(--ease), transform 240ms var(--ease), visibility 240ms; }
  .menu-open .bar__nav { opacity: 1; visibility: visible; transform: none; }
  .bar__nav ul { flex-direction: column; gap: 0; }
  .bar__nav a { display: block; padding: .95rem 0; font-size: 1.15rem; color: var(--ink); border-bottom: 1px solid var(--line); }
  .bar__nav a[aria-current="true"]::after { display: none; }
  .foot__wrap { grid-template-columns: 1fr 1fr; }
  .foot__wrap > :first-child { grid-column: 1 / -1; }
  .prose { font-size: 1.04rem; }
}
@media (max-width: 380px) { .bar__brand { font-size: .95rem; } .bar__end .btn { padding: 0 .75rem; } }