/* AI Terms, the simple site. One typeface (Plus Jakarta Sans, decision 0028), black on white, a color field per book
   (docs/series-design-system.md). No gradients, no patterns. */
@font-face { font-family: "Plus Jakarta Sans"; font-weight: 400; font-style: normal; font-display: swap; src: url("/assets/fonts/plus-jakarta-sans-regular.woff2") format("woff2"); }
@font-face { font-family: "Plus Jakarta Sans"; font-weight: 500; font-style: normal; font-display: swap; src: url("/assets/fonts/plus-jakarta-sans-500.woff2") format("woff2"); }
@font-face { font-family: "Plus Jakarta Sans"; font-weight: 600; font-style: normal; font-display: swap; src: url("/assets/fonts/plus-jakarta-sans-600.woff2") format("woff2"); }
@font-face { font-family: "Plus Jakarta Sans"; font-weight: 700; font-style: normal; font-display: swap; src: url("/assets/fonts/plus-jakarta-sans-700.woff2") format("woff2"); }

:root {
  --ink: #1F2A44; --soft: #6E7686; --mid: #CFCBC4; --fill: #EDE9E3; --paper: #FFFFFF;
  --field: #1F2A44; --field-ink: #FFFFFF;
  --measure: 66ch; --wrap: 1100px;
}
* { box-sizing: border-box; }
html { font-family: "Plus Jakarta Sans", system-ui, -apple-system, "Segoe UI", Helvetica, Arial, sans-serif; color: var(--ink); background: var(--paper); font-size: 17px; line-height: 1.55; -webkit-text-size-adjust: 100%; }
body { margin: 0; }
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration-thickness: 1px; text-underline-offset: 3px; }
h1, h2, h3 { line-height: 1.15; letter-spacing: -0.01em; margin: 0 0 0.5em; font-weight: 700; }
h1 { font-size: clamp(2rem, 4.5vw, 3.2rem); }
h2 { font-size: 1.45rem; margin-top: 1.2em; }
p { margin: 0 0 1em; max-width: var(--measure); }
ul, ol { padding-left: 1.2em; }
.wrap { width: min(var(--wrap), 100% - 2.5rem); margin: 0 auto; }
.narrow { width: min(720px, 100% - 2.5rem); }
.row { display: flex; gap: 2rem; align-items: center; justify-content: space-between; flex-wrap: wrap; }
.two { display: grid; gap: 3rem; grid-template-columns: 1fr; padding: 2rem 0; }
@media (min-width: 800px) { .two { grid-template-columns: 3fr 2fr; } }
.skip { position: absolute; left: -999px; } .skip:focus { left: 1rem; top: 1rem; background: var(--paper); padding: 0.5rem; }

.banner { background: #F6CCB1; color: #1F2A44; font-size: 0.92rem; padding: 0.55rem 0; text-align: center; }
.banner strong { text-transform: uppercase; letter-spacing: 0.08em; font-size: 0.75rem; margin-right: 0.5rem; }
.banner a { font-weight: 600; margin-left: 0.5rem; white-space: nowrap; }
.site-head { border-bottom: 1px solid var(--mid); }
.site-head .row { padding: 1rem 0; }
.brand { font-weight: 700; text-decoration: none; font-size: 1.1rem; }
.site-head nav { display: flex; gap: 1.25rem; flex-wrap: wrap; }
.site-head nav a { text-decoration: none; font-weight: 500; color: var(--soft); }
.site-head nav a[aria-current], .site-head nav a:hover { color: var(--ink); }

.band { background: var(--field); color: var(--field-ink); padding: 3.5rem 0 3rem; }
.band .kicker { text-transform: uppercase; letter-spacing: 0.12em; font-size: 0.75rem; font-weight: 600; margin-bottom: 1rem; opacity: 0.85; }
.band .lead { font-size: 1.2rem; max-width: 60ch; }
.band .status-line { opacity: 0.85; }
.band .row > div { flex: 1 1 480px; }
.band .cover { flex: 0 0 auto; width: 220px; box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25); outline: 1px solid rgba(255, 255, 255, 0.3); }
.band .button { background: var(--field-ink); color: var(--field); }
.band .button.quiet { background: transparent; color: var(--field-ink); border-color: var(--field-ink); }

.button { display: inline-block; padding: 0.7rem 1.1rem; border-radius: 6px; border: 1.5px solid var(--ink); background: var(--ink); color: var(--paper); font-weight: 600; text-decoration: none; cursor: pointer; font: inherit; font-weight: 600; margin: 0.25rem 0.5rem 0.25rem 0; }
.button.quiet { background: transparent; color: var(--ink); }

.cards { display: grid; gap: 1.5rem; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); margin: 1rem 0 3rem; }
.card { text-decoration: none; display: grid; gap: 0.35rem; align-content: start; }
.card img { width: 100%; box-shadow: 0 3px 10px rgba(0, 0, 0, 0.15); margin-bottom: 0.4rem; }
.card span { color: var(--soft); font-size: 0.92rem; }
.status { display: inline-block; font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.1em; font-weight: 600; color: var(--soft); }
.status.available, .status.coming { color: #1E6E48; }

.booklist { list-style: none; padding: 0; margin: 2rem 0; display: grid; gap: 2rem; }
.booklist li { display: grid; grid-template-columns: 120px 1fr; gap: 1.5rem; align-items: start; }
.booklist img { box-shadow: 0 3px 10px rgba(0, 0, 0, 0.15); }
.booklist h2 { margin: 0.2rem 0 0.4rem; font-size: 1.3rem; } .booklist h2 a { text-decoration: none; }

.facts { margin: 1.5rem 0; padding-left: 1.1em; } .facts li { margin-bottom: 0.4em; }
.buy { background: var(--fill); padding: 1.5rem; border-radius: 8px; align-self: start; }
.buy h2 { margin-top: 0; }
.formats { list-style: none; padding: 0; margin: 0 0 1rem; }
.formats li { display: grid; gap: 0.15rem; padding: 0.8rem 0; border-bottom: 1px solid var(--mid); }
.formats li:last-child { border-bottom: 0; }
.formats span { color: var(--soft); font-size: 0.92rem; }
.formats .price { color: var(--ink); font-weight: 600; }

.pages { display: grid; gap: 1.5rem; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); margin: 1rem 0 3rem; }
.pages figure { margin: 0; }
.pages img { border: 1px solid var(--mid); }
.pages figcaption { font-size: 0.88rem; color: var(--soft); margin-top: 0.4rem; }

form label { display: block; font-weight: 600; font-size: 0.92rem; margin: 1rem 0 0.35rem; }
form input, form select, form textarea { width: 100%; font: inherit; padding: 0.6rem 0.7rem; border: 1.5px solid var(--mid); border-radius: 6px; background: var(--paper); color: var(--ink); }
form input:focus, form select:focus, form textarea:focus { outline: 2px solid var(--ink); outline-offset: 1px; border-color: var(--ink); }
form .row { gap: 0.5rem; align-items: stretch; flex-wrap: nowrap; }
form .row input { flex: 1; min-width: 0; }
form .row .button { margin: 0; white-space: nowrap; }
.signup label { margin-top: 0; }
.feedback { margin: 2rem 0 3rem; }
.feedback .button { margin-top: 1.25rem; }
.hp { position: absolute; left: -9999px; }
.fine { font-size: 0.85rem; color: var(--soft); }
.unwired { color: #9A4A1F; }

.prose h2 { margin-top: 2rem; }
.prose { padding: 1.5rem 0 3rem; }

.site-foot { border-top: 1px solid var(--mid); margin-top: 2rem; padding: 2rem 0 3rem; color: var(--soft); font-size: 0.92rem; }
.site-foot a { margin-right: 1rem; }