/*
 * Near Fine
 *
 * Plain CSS served by Propshaft. No build step. Colors are OKLCH tokens with a dark
 * variant under prefers-color-scheme; components only reference the semantic tokens.
 * The palette is paper and ink with one accent, cinnabar: the red that printers used
 * for rubrics and title pages, here kept for the few marks that matter.
 * Type is Source Serif 4 for reading, with Departure Mono, a pixel monospace, for
 * labels, controls and code (both SIL Open Font License, self-hosted as Latin
 * subsets).
 */

/* Fonts
   ========================================================================== */

@font-face {
  font-family: "Source Serif";
  src: url("/assets/source-serif-1a2ec00b.woff2") format("woff2");
  font-weight: 400 600;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Departure Mono";
  src: url("/assets/departure-mono-7d5f0643.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

/* Tokens
   ========================================================================== */

:root {
  color-scheme: light dark;

  --font-serif: "Source Serif", Georgia, "Times New Roman", serif;
  --font-mono: "Departure Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;

  /* Running text grows from 19px on phones to 23px on wide screens, and leads
     stay a step above it */
  --text-body: clamp(1.1875rem, 1.05rem + 0.45vw, 1.4375rem);
  --text-lead: clamp(1.375rem, 1.1rem + 0.9vw, 1.875rem);

  --color-bg: oklch(0.982 0.004 85);
  --color-surface: oklch(0.997 0.002 85);
  --color-subtle: oklch(0.958 0.005 85);
  --color-border: oklch(0.895 0.006 80);
  --color-border-strong: oklch(0.6 0.009 75);
  --color-rule: oklch(0.8 0.008 78);
  --color-text: oklch(0.2 0.008 70);
  --color-text-secondary: oklch(0.47 0.01 70);

  /* Cinnabar: a fill for marks, and a deeper shade for text and links */
  --color-accent: oklch(0.58 0.17 30);
  --color-accent-text: oklch(0.52 0.17 29);
  --color-accent-subtle: oklch(0.58 0.17 30 / 0.16);

  --color-primary: oklch(0.2 0.008 70);
  --color-primary-hover: oklch(0.34 0.009 70);
  --color-on-primary: oklch(0.982 0.004 85);
  --color-focus: oklch(0.2 0.008 70);
  --color-positive: oklch(0.47 0.09 160);
  --color-cover: oklch(0.27 0.008 70);
  --color-on-cover: oklch(0.93 0.005 85);
  --color-image-outline: oklch(0 0 0 / 0.08);

  --shadow-md: 0 1px 2px oklch(0.2 0.01 70 / 0.06), 0 12px 28px -12px oklch(0.2 0.01 70 / 0.2);
  --shadow-cover: drop-shadow(0 1px 1px oklch(0.2 0.01 70 / 0.16)) drop-shadow(0 6px 10px oklch(0.2 0.01 70 / 0.1));

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --gutter: clamp(1rem, 4vw, 3rem);
  --page: 76rem;
  --measure: min(100% - 2 * var(--gutter), var(--page));
  --section: clamp(4rem, 3rem + 5vw, 8rem);
  --ease: cubic-bezier(0.2, 0, 0, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: oklch(0.17 0.005 70);
    --color-surface: oklch(0.205 0.006 70);
    --color-subtle: oklch(0.24 0.007 70);
    --color-border: oklch(0.305 0.008 70);
    --color-border-strong: oklch(0.56 0.01 70);
    --color-rule: oklch(0.305 0.008 70);
    --color-text: oklch(0.95 0.005 85);
    --color-text-secondary: oklch(0.75 0.01 80);

    --color-accent: oklch(0.68 0.15 33);
    --color-accent-text: oklch(0.74 0.13 35);
    --color-accent-subtle: oklch(0.68 0.15 33 / 0.22);

    --color-primary: oklch(0.95 0.005 85);
    --color-primary-hover: oklch(0.86 0.006 85);
    --color-on-primary: oklch(0.17 0.005 70);
    --color-focus: oklch(0.95 0.005 85);
    --color-positive: oklch(0.77 0.1 160);
    --color-cover: oklch(0.34 0.008 70);
    --color-image-outline: oklch(1 0 0 / 0.08);

    --shadow-md: 0 0 0 1px oklch(1 0 0 / 0.06), 0 16px 32px -12px oklch(0 0 0 / 0.6);
    --shadow-cover: drop-shadow(0 2px 8px oklch(0 0 0 / 0.5));
  }
}

/* Base
   ========================================================================== */

*,
*::before,
*::after {
  box-sizing: border-box;
}

* {
  margin: 0;
}

html {
  -webkit-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  hanging-punctuation: first last;
}

@media (prefers-reduced-motion: no-preference) {
  html {
    scroll-behavior: smooth;
  }

  @view-transition {
    navigation: auto;
  }
}

body {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 100dvh;
  font-family: var(--font-serif);
  font-size: var(--text-body);
  line-height: 1.5;
  color: var(--color-text);
  background: var(--color-bg);
}

main {
  flex: 1;
}

h1,
h2,
h3 {
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.02em;
  text-wrap: balance;
}

img {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
  text-underline-offset: 0.22em;
  text-decoration-thickness: from-font;
}

button,
input {
  font: inherit;
  color: inherit;
}

code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  padding: 0.1em 0.35em;
  border-radius: 4px;
  background: var(--color-subtle);
}

::selection {
  background: var(--color-accent-subtle);
}

:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}

[hidden] {
  display: none !important;
}

.nowrap {
  white-space: nowrap;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  top: 0;
  left: 0;
  z-index: 100;
  padding: 0.5rem 1rem;
  color: var(--color-on-primary);
  background: var(--color-primary);
  translate: 0 -100%;
}

.skip-link:focus {
  translate: 0 0;
}

/* A quiet label above a page title */
.eyebrow {
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-accent-text);
}

/* Wordmark
   ========================================================================== */

/* 22px on phones, 26px on wide screens */
.wordmark {
  display: inline-block;
  font-size: clamp(1.375rem, 1.2rem + 0.5vw, 1.625rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--color-text);
  text-decoration: none;
  white-space: nowrap;
  view-transition-name: wordmark;
}

.wordmark-dot {
  color: var(--color-accent);
}

/* A hand-drawn underline, as on lineofflig.ht: a filled shape that swells and
   tapers like ink from a pen, stretched to the width of the word */
.scribble {
  position: relative;
  display: inline-block;
  padding-bottom: 0.3em;
}

.scribble svg {
  position: absolute;
  left: -3%;
  bottom: 0;
  width: 106%;
  height: 0.38em;
  overflow: visible;
  fill: var(--color-accent);
}

/* Header and footer
   ========================================================================== */

.site-header {
  position: relative;
  z-index: 10;
  background: var(--color-bg);
}

.site-header-inner {
  display: flex;
  gap: 1rem 1.5rem;
  align-items: center;
  justify-content: space-between;
  width: var(--measure);
  margin-inline: auto;
  padding-block: 1.25rem;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem clamp(1rem, 5vw - 0.25rem, 1.75rem);
  font-size: 1rem;
  font-weight: 500;
}

.site-nav a {
  color: var(--color-text-secondary);
  white-space: nowrap;
  text-decoration: none;
  transition: color 150ms var(--ease);
}

/* With "Sign in" or "Alerts" too, the links drop under the wordmark on phones */
.site-header-inner:has(.site-nav a + a + a) {
  flex-wrap: wrap;
}

/* With Pricing as well, Docs gives way on phones, since the footer has it too,
   and the rest keep to one row down to 390px */
@media (max-width: 31rem) {
  .site-nav:has(> :nth-child(5)) {
    font-size: 0.9375rem;
  }

  .site-nav:has(> :nth-child(5)) .site-nav-docs {
    display: none;
  }
}

.site-nav a[aria-current="page"] {
  color: var(--color-text);
}

@media (hover: hover) {
  .site-nav a:hover {
    color: var(--color-text);
  }
}

.site-footer {
  border-top: 1px solid var(--color-border);
}

.site-footer-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 2rem;
  align-items: baseline;
  justify-content: space-between;
  width: var(--measure);
  margin-inline: auto;
  padding-block: 1.75rem 2.25rem;
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
}

/* A line of its own across the footer, with the links under it */
.footer-disclosure {
  flex-basis: 100%;
  text-wrap: pretty;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
}

.footer-nav a {
  text-decoration: none;
  transition: color 150ms var(--ease);
}

@media (hover: hover) {
  .footer-nav a:hover {
    color: var(--color-text);
  }
}

/* Buttons
   ========================================================================== */

.button {
  display: inline-flex;
  gap: 0.375rem;
  align-items: center;
  justify-content: center;
  padding: 0.4375rem 0.875rem;
  font-size: 0.9375rem;
  font-weight: 500;
  line-height: 1.25;
  white-space: nowrap;
  text-decoration: none;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  transition: background-color 150ms var(--ease), border-color 150ms var(--ease), scale 150ms ease-out;
}

.button svg {
  flex: none;
  width: 0.875rem;
  height: 0.875rem;
}

@media (prefers-reduced-motion: no-preference) {
  .button:not(:disabled):active {
    scale: 0.97;
  }
}

.button--primary {
  color: var(--color-on-primary);
  background: var(--color-primary);
}

.button--secondary {
  background: var(--color-surface);
  border-color: var(--color-border);
}

.button--secondary svg {
  color: var(--color-text-secondary);
}

@media (hover: hover) {
  .button--primary:hover {
    background: var(--color-primary-hover);
  }

  .button--secondary:hover {
    border-color: var(--color-border-strong);
  }
}

/* Search form
   ========================================================================== */

/* The field and its button share one frame, which shows focus for the input inside it */
.search-form {
  position: relative;
  display: flex;
  gap: 0.375rem;
  align-items: center;
  width: 100%;
  padding: 0.25rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-md);
  transition: border-color 150ms var(--ease), box-shadow 150ms var(--ease);
}

.search-form:has(.search-input:focus-visible) {
  border-color: var(--color-focus);
  box-shadow: 0 0 0 3px var(--color-border);
}

.combobox {
  flex: 1;
  min-width: 0;
}

.search-input {
  width: 100%;
  height: 2.5rem;
  padding: 0 0.5rem 0 0.875rem;
  font-size: 1.0625rem;
  background: none;
  border: 0;
  border-radius: var(--radius-sm);
  appearance: none;
}

.search-input::placeholder {
  color: var(--color-text-secondary);
  opacity: 1;
}

.search-input::-webkit-search-decoration {
  appearance: none;
}

/* Chrome draws the clear button in blue */
.search-input::-webkit-search-cancel-button {
  filter: grayscale(1);
}

/* The frame around it shows focus instead */
.search-input:focus-visible {
  outline: 2px solid transparent;
}

.search-button {
  display: inline-flex;
  flex: none;
  gap: 0.5rem;
  align-items: center;
  height: 2.5rem;
  padding: 0 1.125rem 0 1rem;
  font-weight: 600;
  white-space: nowrap;
  color: var(--color-on-primary);
  background: var(--color-primary);
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  transition: background-color 150ms var(--ease), scale 150ms ease-out;
}

.search-button svg {
  flex: none;
  width: 1.125rem;
  height: 1.125rem;
}

@media (prefers-reduced-motion: no-preference) {
  .search-button:not(:disabled):active {
    scale: 0.97;
  }
}

@media (hover: hover) {
  .search-button:hover {
    background: var(--color-primary-hover);
  }
}

@media (max-width: 30rem) {
  .search-button {
    justify-content: center;
    width: 2.5rem;
    padding: 0;
  }

  .search-button span {
    display: none;
  }
}

/* Suggestions (typeahead listbox), under the whole frame */

.suggestions {
  position: absolute;
  top: calc(100% + 0.375rem);
  right: 0;
  left: 0;
  z-index: 20;
  max-height: 60dvh;
  margin: 0;
  padding: 0.25rem;
  overflow-y: auto;
  overscroll-behavior: contain;
  list-style: none;
  text-align: start;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
}

.suggestion {
  display: flex;
  flex-wrap: wrap;
  gap: 0 0.5rem;
  align-items: baseline;
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
}

.suggestion[aria-selected="true"] {
  background: var(--color-subtle);
}

@media (hover: hover) {
  .suggestion:hover {
    background: var(--color-subtle);
  }
}

.suggestion-title {
  font-weight: 500;
}

.suggestion-author {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
}

/* Home: hero
   ========================================================================== */

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.5rem, 3vw, 2.5rem);
  width: var(--measure);
  margin-inline: auto;
  padding-block: clamp(2rem, 6vw, 5.5rem) clamp(2.5rem, 5vw, 4.5rem);
}

@media (min-width: 62rem) {
  .hero {
    grid-template-columns: minmax(0, 3fr) minmax(0, 2fr);
    grid-template-areas:
      "title title"
      "copy sketch";
    column-gap: clamp(3rem, 6vw, 6rem);
    row-gap: clamp(2rem, 3.5vw, 3rem);
  }

  .hero-title {
    grid-area: title;
  }

  .hero-copy {
    grid-area: copy;
  }

  .sketch {
    grid-area: sketch;
  }
}

/* Two lines, broken after the comma. Narrow enough that "from any bookseller" can't join the
   first line, and on phones small enough that it still fits on the second. */
.hero-title {
  max-width: 8.4em;
  font-size: clamp(2rem, min(1.25rem + 6.2vw, 11.6vw - 0.25rem), 6.75rem);
  font-weight: 560;
  line-height: 0.96;
  letter-spacing: -0.02em;
  text-wrap: wrap;
}

/* The full stop echoes the wordmark's */
.hero-stop {
  color: var(--color-accent);
}

.hero-copy {
  display: grid;
  gap: 1.5rem;
  align-content: start;
  justify-items: start;
}

/* Wide enough for two lines on tablets and in the desktop grid from about 1240px. In em so the
   cap scales with the fluid lead size. */
.hero-lead {
  max-width: 23em;
  font-size: var(--text-lead);
  line-height: 1.45;
  color: var(--color-text-secondary);
  text-wrap: pretty;
}

.hero .search-form {
  max-width: 36rem;
  padding: 0.3125rem;
}

.hero .search-input,
.hero .search-button {
  height: 3rem;
}

.hero .search-input {
  padding-inline: 1rem 0.5rem;
  font-size: 1.125rem;
}

@media (max-width: 30rem) {
  .hero .search-button {
    width: 3rem;
  }
}

.hero-examples {
  margin-top: -0.375rem;
  font-size: 1rem;
  color: var(--color-text-secondary);
}

.hero-examples a {
  color: var(--color-text);
  font-variant-numeric: tabular-nums;
  text-decoration-color: var(--color-border-strong);
  transition: text-decoration-color 150ms var(--ease);
}

@media (hover: hover) {
  .hero-examples a:hover {
    text-decoration-color: var(--color-accent);
  }
}

.hero-assistants {
  margin-top: 0.5rem;
  font-size: 1rem;
  font-weight: 500;
  text-decoration: none;
  text-wrap: pretty;
}

/* The arrow stays with the last word when the line wraps */
.hero-assistants svg {
  display: inline-block;
  width: 1rem;
  height: 1rem;
  margin-left: 0.25rem;
  vertical-align: -0.1875rem;
  color: var(--color-accent-text);
  transition: translate 200ms var(--ease);
}

@media (hover: hover) {
  .hero-assistants:hover svg {
    translate: 3px 0;
  }
}

/* A book in charcoal pencil (see application/_sketch.html.erb), ink on the paper in either
   theme, with the cinnabar of the full stop in the ribbon */
.sketch {
  display: block;
  align-self: end;
  width: 100%;
  max-width: 30rem;
  height: auto;
  color: var(--color-text);
}

.sketch-ribbon {
  fill: var(--color-accent);
}

/* Home: booksellers
   ========================================================================== */

.sellers {
  display: grid;
  gap: 0.75rem 3rem;
  width: var(--measure);
  margin-inline: auto;
  padding-block: 1.5rem 1.625rem;
  border-block: 1px solid var(--color-border);
}

@media (min-width: 48rem) {
  .sellers {
    grid-template-columns: 9rem minmax(0, 1fr);
    align-items: baseline;
  }
}

.sellers-title {
  font-size: 1rem;
  font-weight: 500;
  letter-spacing: 0;
  color: var(--color-text-secondary);
}

.sellers-list {
  display: flex;
  flex-wrap: wrap;
  margin: 0;
  padding: 0;
  font-size: clamp(0.9375rem, 0.875rem + 0.3vw, 1.125rem);
  font-weight: 500;
  line-height: 1.6;
  letter-spacing: -0.01em;
  list-style: none;
}

.sellers-list li {
  white-space: nowrap;
}

.sellers-list li:not(:last-child)::after {
  content: "/" / "";
  margin-inline: 0.45em;
  font-weight: 300;
  color: var(--color-border-strong);
}

/* Home: how it works
   ========================================================================== */

.section {
  padding-block: var(--section);
}

.section-inner {
  width: var(--measure);
  margin-inline: auto;
}

.section-title {
  max-width: 15ch;
  font-size: clamp(2rem, 1.2rem + 3vw, 3.75rem);
  font-weight: 560;
  line-height: 1;
  letter-spacing: -0.02em;
}

.section-header {
  display: grid;
  gap: 1rem 4rem;
  margin-bottom: clamp(2.5rem, 5vw, 4rem);
}

@media (min-width: 62rem) {
  .section-header {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: end;
  }
}

.section-lead {
  max-width: 30rem;
  font-size: var(--text-lead);
  color: var(--color-text-secondary);
  text-wrap: pretty;
}

/* Two ways in: the site and an assistant, each with a small example */
.ways {
  display: grid;
  gap: clamp(2rem, 4vw, 3rem) clamp(1rem, 2.5vw, 1.5rem);
}

@media (min-width: 52rem) {
  .ways {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.way {
  display: grid;
  grid-template-rows: 1fr auto;
  gap: 1.25rem;
  margin: 0;
}

.way figcaption {
  display: grid;
  gap: 0.375rem;
}

.way h3 {
  font-size: clamp(1.375rem, 1.15rem + 0.8vw, 1.875rem);
  letter-spacing: -0.02em;
}

.way p {
  max-width: 34rem;
  color: var(--color-text-secondary);
  text-wrap: pretty;
}

.demo {
  display: flex;
  flex-direction: column;
  gap: 0.875rem;
  min-height: 17rem;
  padding: clamp(1rem, 2.5vw, 1.5rem);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}

.demo-search {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.25rem 0.25rem 0.25rem 0.875rem;
  font-size: 1rem;
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-md);
}

.demo-search-button {
  width: 2.25rem;
  height: 1.875rem;
  background: var(--color-primary);
  border-radius: var(--radius-sm);
}

.demo-status {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}

.demo-offers {
  display: grid;
  margin: 0;
  padding: 0;
  list-style: none;
}

.demo-offer {
  display: grid;
  grid-template-columns: 2.25rem minmax(0, 1fr);
  gap: 0.125rem 0.875rem;
  align-items: center;
  padding-block: 0.75rem;
  font-variant-numeric: tabular-nums;
  border-top: 1px solid var(--color-border);
}

.demo-cover {
  display: grid;
  grid-row: span 2;
  place-items: center;
  aspect-ratio: 2 / 3;
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--color-on-cover);
  background: var(--color-cover);
  border-radius: 2px 3px 3px 2px;
}

.demo-price {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 0.625rem;
  align-items: center;
  font-size: 1.125rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.demo-offer--best .demo-amount {
  color: var(--color-accent-text);
}

.demo-meta {
  overflow: hidden;
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  text-overflow: ellipsis;
  white-space: nowrap;
}

.demo-free {
  font-weight: 600;
  color: var(--color-positive);
}

.demo--chat {
  gap: 1rem;
  font-size: 1rem;
}

.chat-user {
  align-self: flex-end;
  max-width: 85%;
  padding: 0.75rem 1rem;
  background: var(--color-subtle);
  border-radius: var(--radius-lg) var(--radius-lg) 4px var(--radius-lg);
  text-wrap: pretty;
}

.chat-tool {
  display: flex;
  flex-wrap: wrap;
  gap: 0.375rem;
  align-items: center;
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}

.chat-tool svg {
  width: 1rem;
  height: 1rem;
  padding: 0.1875rem;
  color: var(--color-on-primary);
  background: var(--color-primary);
  border-radius: 50%;
}

.chat-tool code {
  font-size: 0.8125rem;
}

.chat-reply {
  max-width: 92%;
  text-wrap: pretty;
}

.chat-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.chat-links span {
  display: inline-flex;
  gap: 0.25rem;
  align-items: center;
  padding: 0.25rem 0.625rem;
  font-size: 0.875rem;
  font-weight: 500;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
}

.chat-links span::after {
  content: "↗" / "";
  color: var(--color-text-secondary);
}

/* The examples play in order once they scroll into view (see reveal_controller.js) */
.is-pending [style*="--i"] {
  opacity: 0;
}

@media (prefers-reduced-motion: no-preference) {
  .is-revealed [style*="--i"] {
    animation: rise 600ms var(--ease-out) calc(var(--i) * 450ms) both;
  }

  @keyframes rise {
    from {
      opacity: 0;
      translate: 0 0.5rem;
    }
  }
}

.features {
  display: grid;
  gap: 2rem clamp(1.5rem, 4vw, 3rem);
  margin: clamp(3.5rem, 7vw, 6rem) 0 0;
  padding: 0;
  list-style: none;
}

@media (min-width: 48rem) {
  .features {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  /* With alerts there are four, two to a row */
  .features:has(> :nth-child(4)) {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.feature {
  display: grid;
  gap: 0.5rem;
  align-content: start;
  padding-top: 1.25rem;
  border-top: 1px solid var(--color-text);
}

.feature h3 {
  font-size: clamp(1.375rem, 1.15rem + 0.8vw, 1.875rem);
  letter-spacing: -0.015em;
}

.feature p {
  color: var(--color-text-secondary);
  text-wrap: pretty;
}

/* Home: AI assistants
   ========================================================================== */

.assistants {
  padding-block: var(--section);
  background: var(--color-subtle);
}

/* minmax(0, …) keeps long code from widening the columns past the page */
.assistants-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(3rem, 6vw, 5rem);
  width: var(--measure);
  margin-inline: auto;
}

.assistants-intro {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 2rem 4rem;
  align-items: end;
}

@media (min-width: 62rem) {
  .assistants-intro {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }
}

.assistants-heading {
  display: grid;
  gap: 1.25rem;
}

.assistants-lead {
  max-width: 36rem;
  font-size: var(--text-lead);
  color: var(--color-text-secondary);
  text-wrap: pretty;
}

.assistants-connect {
  display: grid;
  gap: 1rem;
}

.assistants-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
  margin: 0;
  padding: 0;
  font-size: 1rem;
  font-weight: 500;
  list-style: none;
}

.assistants-links a {
  text-decoration-color: var(--color-border-strong);
  transition: text-decoration-color 150ms var(--ease);
}

@media (hover: hover) {
  .assistants-links a:hover {
    text-decoration-color: var(--color-accent);
  }
}

/* A value to copy: the server URL */
.copyable-label {
  margin-bottom: 0.5rem;
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-text-secondary);
}

.copyable {
  display: flex;
  gap: 0.5rem;
  align-items: center;
  padding: 0.3125rem 0.3125rem 0.3125rem 1rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-md);
}

/* Long values wrap rather than scroll, so they can be read in full */
.copyable code {
  flex: 1;
  min-width: 0;
  padding: 0.25rem 0;
  font-size: clamp(1rem, 0.9rem + 0.4vw, 1.1875rem);
  overflow-wrap: anywhere;
  background: none;
}

.copy-button {
  flex: none;
  min-width: 4.75rem;
  padding: 0.5rem 1rem;
}

.steps {
  display: grid;
  gap: 0.75rem;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: step;
}

/* Step numbers hang in their own column */
.steps li {
  position: relative;
  padding-left: 1.75rem;
  counter-increment: step;
}

.steps li::before {
  content: counter(step);
  position: absolute;
  left: 0;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  color: var(--color-text);
}

.tools {
  display: grid;
  gap: 0.5rem;
}

.tools dd + dt {
  margin-top: 0.5rem;
}

.tools dt code {
  font-size: 1rem;
}

/* Results
   ========================================================================== */

.search-page {
  display: flex;
  flex: 1;
  flex-direction: column;
}

.site-header--search {
  position: sticky;
  top: 0;
  background: color-mix(in oklab, var(--color-bg) 85%, transparent);
  border-bottom: 1px solid var(--color-border);
  backdrop-filter: blur(16px) saturate(1.4);
}

.site-header--search .site-header-inner {
  justify-content: flex-start;
  width: auto;
  margin-inline: var(--gutter);
  padding-block: 0.75rem;
}

/* The footer lines up with the results, which run gutter to gutter */
.search-page ~ .site-footer .site-footer-inner {
  width: auto;
  margin-inline: var(--gutter);
}

.site-header--search .search-form {
  flex: 1;
  min-width: 0;
  max-width: 48rem;
}

.progress {
  position: absolute;
  right: 0;
  bottom: -1px;
  left: 0;
  height: 2px;
  overflow: hidden;
}

.progress-bar {
  width: 0;
  height: 100%;
  background: var(--color-accent);
  transition: width 300ms var(--ease), opacity 300ms var(--ease);
}

.progress.is-done .progress-bar {
  opacity: 0;
}

.results-page {
  width: 100%;
  padding: 0 var(--gutter) 4rem;
}

.results-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1rem;
  align-items: center;
  justify-content: space-between;
  padding: 1.125rem 0;
}

.results-status {
  font-size: 0.9375rem;
  font-variant-numeric: tabular-nums;
  color: var(--color-text-secondary);
}

.results-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
}

/* Segmented control: radios inside styled labels */

.segmented {
  display: inline-flex;
  margin: 0;
  padding: 2px;
  border: 1px solid var(--color-border);
  background: var(--color-subtle);
  border-radius: var(--radius-sm);
}

.segmented label {
  position: relative;
}

.segmented input {
  position: absolute;
  inset: 0;
  margin: 0;
  opacity: 0;
  cursor: pointer;
}

.segmented span {
  display: block;
  padding: 0.3125rem 0.875rem;
  font-size: 0.9375rem;
  font-weight: 500;
  line-height: 1.25;
  white-space: nowrap;
  color: var(--color-text-secondary);
  border-radius: 4px;
  transition: background-color 150ms var(--ease), color 150ms var(--ease);
}

.segmented input:checked + span {
  color: var(--color-on-primary);
  background: var(--color-primary);
}

.segmented input:focus-visible + span {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}

.segmented[hidden],
.segmented label[hidden] {
  display: none;
}

/* Ebooks and audiobooks wait above the print copies: a row per format, naming each
   seller once at its cheapest */

.also {
  display: grid;
  margin: 0 0 1rem;
  padding: 0.25rem 1rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.also[hidden],
.also-format[hidden],
.also-all[hidden] {
  display: none;
}

.also-format {
  display: flex;
  flex-wrap: wrap;
  gap: 0.375rem 0.5rem;
  align-items: center;
  padding: 0.625rem 0;
}

.also-format:not([hidden]) ~ .also-format:not([hidden]) {
  border-top: 1px solid var(--color-border);
}

.also-title {
  margin-right: 0.5rem;
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
}

.also-offers {
  display: flex;
  flex-wrap: wrap;
  gap: 0.375rem 0.5rem;
  padding: 0;
  list-style: none;
}

.also-offer {
  display: inline-flex;
  gap: 0.5rem;
  align-items: baseline;
  padding: 0.25rem 0.625rem;
  font-variant-numeric: tabular-nums;
  text-decoration: none;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  transition: border-color 150ms var(--ease), background-color 150ms var(--ease);
}

.also-seller {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}

.also-price {
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: -0.015em;
}

.also-all {
  padding: 0.25rem 0.5rem;
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  cursor: pointer;
  background: none;
  border: 0;
  border-radius: var(--radius-sm);
}

.also-offer:focus-visible,
.also-all:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}

@media (hover: hover) {
  .also-offer:hover {
    background: var(--color-subtle);
    border-color: var(--color-border-strong);
  }

  .also-all:hover {
    color: var(--color-text);
    text-decoration: underline;
    text-decoration-color: var(--color-accent);
    text-decoration-thickness: from-font;
  }
}

/* Only the chosen format's cards show in the results */
.results[data-format="print"] > .product:not([data-format="print"]),
.results[data-format="ebook"] > .product:not([data-format="ebook"]),
.results[data-format="audiobook"] > .product:not([data-format="audiobook"]) {
  display: none;
}

.results,
.skeleton {
  --results-gap: 0.75rem;

  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(10rem, 1fr));
  gap: var(--results-gap);
  margin: 0;
  padding: 0;
  list-style: none;
}

@media (min-width: 48rem) {
  .results,
  .skeleton {
    --results-gap: 1rem;

    grid-template-columns: repeat(auto-fill, minmax(11.5rem, 1fr));
  }
}

/* The masonry controller spans each card over as many of these short rows as it needs */
.results.is-masonry {
  grid-auto-rows: 4px;
  row-gap: 0;
}

.product {
  display: flex;
}

.is-masonry > .product {
  align-self: start;
  padding-bottom: var(--results-gap);
}

@media (prefers-reduced-motion: no-preference) {
  .product {
    animation: enter-card 350ms var(--ease-out) both;
  }

  @keyframes enter-card {
    from {
      opacity: 0;
      translate: 0 0.5rem;
    }
  }
}

.product-link {
  position: relative;
  display: flex;
  flex-direction: column;
  width: 100%;
  overflow: hidden;
  text-decoration: none;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: border-color 150ms var(--ease), box-shadow 200ms var(--ease);
}

@media (hover: hover) {
  .product-link:hover {
    border-color: var(--color-border-strong);
    box-shadow: var(--shadow-md);
  }

  .product-link:hover .product-name {
    text-decoration: underline;
    text-decoration-color: var(--color-accent);
  }
}

.product-cover {
  display: grid;
  place-items: center;
  margin: 0.3125rem 0.3125rem 0;
  padding: 1rem 1rem 0.875rem;
  background: var(--color-subtle);
  border-radius: calc(var(--radius-md) - 0.3125rem);
}

/* Covers keep their own shape, which is what gives the grid its varied heights */
.product-cover img {
  width: 100%;
  height: auto;
  max-height: 22rem;
  object-fit: contain;
  filter: var(--shadow-cover);
}

/* Without a cover, a plain binding with the title's initial */
.product-initial {
  display: none;
  place-items: center;
  width: 72%;
  aspect-ratio: 2 / 3;
  font-size: 2.75rem;
  font-weight: 600;
  letter-spacing: -0.015em;
  color: var(--color-on-cover);
  background: var(--color-cover);
  border-radius: 2px 4px 4px 2px;
  filter: var(--shadow-cover);
}

.product--no-cover img {
  display: none;
}

.product[hidden] {
  display: none;
}

/* Amazon has no price to show, so its card stands apart and points out of the site */
.product--amazon .product-link {
  border: 1px dashed var(--color-border-strong);
}

.product--no-cover .product-initial {
  display: grid;
}

.product-body {
  display: flex;
  flex: 1;
  flex-direction: column;
  gap: 0.25rem;
  padding: 0.75rem 0.875rem 0.875rem;
}

/* Offers come after the title in the markup, so screen readers name the book first, but lead visually */
.product-offers {
  display: grid;
  order: -1;
  gap: 0.5rem;
  margin: 0 0 0.375rem;
  padding: 0;
  font-variant-numeric: tabular-nums;
  list-style: none;
}

.offer {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.125rem 0.5rem;
  align-items: baseline;
}

.offer-price {
  font-size: 1.25rem;
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.025em;
}

.offer-type {
  display: inline-block;
  padding: 0.0625rem 0.375rem;
  font-size: 0.8125rem;
  font-weight: 500;
  line-height: 1.4;
  letter-spacing: 0;
  white-space: nowrap;
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
  border-radius: 4px;
}

/* Booksellers send conditions in lower case */
.offer-type::first-letter {
  text-transform: uppercase;
}

.offer-meta {
  display: flex;
  flex-wrap: wrap;
  grid-column: 1 / -1;
  gap: 0 0.5rem;
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
}

.offer-shipping--free {
  font-weight: 600;
  color: var(--color-positive);
}

.product-name {
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 3;
  overflow: hidden;
  font-size: 0.9375rem;
  font-weight: 500;
  line-height: 1.4;
  letter-spacing: -0.005em;
  overflow-wrap: anywhere;
  text-decoration-thickness: from-font;
  text-wrap: pretty;
}

.product-creator,
.product-seller,
.product-origin {
  overflow: hidden;
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  text-overflow: ellipsis;
  white-space: nowrap;
}

.product-origin {
  white-space: normal;
  text-wrap: pretty;
}

.product-seller {
  margin-top: 0.25rem;
  font-size: 0.8125rem;
  font-weight: 600;
}

.product-creator:empty,
.product-origin:empty {
  display: none;
}

/* What the shopper asked for that the bookseller or Jev confirms, such as "1st ed." */
.product-claims {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem;
  margin: 0.25rem 0 0;
  padding: 0;
  list-style: none;
}

.product-claims:empty {
  display: none;
}

.product-claim {
  padding: 0.0625rem 0.375rem;
  font-size: 0.8125rem;
  line-height: 1.4;
  white-space: nowrap;
  color: var(--color-accent-text);
  border: 1px solid var(--color-accent-subtle);
  border-radius: 4px;
}

/* Jev's match, in the cover's corner and left unexplained */
.product-match {
  position: absolute;
  top: 0.625rem;
  right: 0.75rem;
  font-size: 0.6875rem;
  font-variant-numeric: tabular-nums;
  line-height: 1;
  color: var(--color-text-secondary);
}

.product-match:empty {
  display: none;
}

/* Listings Jev doubts wait behind a quiet control under the results */
.results:not(.is-showing-all) > .product--doubtful {
  display: none;
}

.results-more {
  display: block;
  margin: 1.5rem auto 0;
  padding: 0.5rem 0.75rem;
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  cursor: pointer;
  background: none;
  border: 0;
  border-radius: var(--radius-sm);
}

.results-more:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}

@media (hover: hover) {
  .results-more:hover {
    color: var(--color-text);
    text-decoration: underline;
    text-decoration-color: var(--color-accent);
    text-decoration-thickness: from-font;
  }
}

/* Placeholders while the first booksellers answer */

.skeleton-card {
  overflow: hidden;
  padding: 0.3125rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.skeleton-cover,
.skeleton-line {
  background: var(--color-subtle);
}

.skeleton-cover {
  aspect-ratio: 3 / 4;
  border-radius: calc(var(--radius-md) - 0.3125rem);
}

.skeleton-line {
  height: 0.625rem;
  margin: 0.75rem 0.5rem 0;
  border-radius: 3px;
}

.skeleton-line:nth-child(2) {
  width: 40%;
  height: 1rem;
}

.skeleton-line:last-child {
  width: 60%;
  margin-bottom: 0.625rem;
}

/* A sheen sweeps across while the booksellers answer */
@media (prefers-reduced-motion: no-preference) {
  .skeleton-cover,
  .skeleton-line {
    background:
      linear-gradient(100deg, transparent 30%, color-mix(in oklab, var(--color-surface) 70%, transparent) 50%, transparent 70%)
      var(--color-subtle);
    background-size: 250% 100%;
    background-attachment: fixed;
    animation: sheen 1.6s linear infinite;
  }

  @keyframes sheen {
    from {
      background-position: 125% 0;
    }

    to {
      background-position: -125% 0;
    }
  }
}

/* Empty and error states */

.notice {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  align-items: center;
  max-width: 32rem;
  margin-inline: auto;
  padding: 4rem 1rem;
  text-align: center;
}

.notice > svg {
  box-sizing: content-box;
  width: 1.75rem;
  height: 1.75rem;
  margin-bottom: 0.5rem;
  padding: 0.875rem;
  color: var(--color-text-secondary);
  background: var(--color-subtle);
  border-radius: 50%;
}

.notice h2 {
  font-size: clamp(1.5rem, 1.2rem + 1.2vw, 2rem);
  font-weight: 560;
  letter-spacing: -0.015em;
}

.notice p {
  color: var(--color-text-secondary);
  text-wrap: pretty;
}

.notice-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: center;
  margin-top: 0.5rem;
}

.notice .button {
  padding: 0.5625rem 1rem;
  font-size: 0.9375rem;
}

/* Prose pages (about, cookies)
   ========================================================================== */

/* Text pages sit on the same grid as the header and footer, starting at the
   wordmark, with the text in a column narrow enough to read. Headlines may
   run wider. */
.prose {
  --prose-column: 44rem;
  width: var(--measure);
  margin-inline: auto;
  padding-block: clamp(2.5rem, 7vw, 5.5rem) 5rem;
}

.prose > * {
  max-width: var(--prose-column);
}

.prose > h1 {
  max-width: 60rem;
}

.prose h1 {
  margin: 0.75rem 0 1.5rem;
  font-size: clamp(2.5rem, 1.5rem + 4vw, 4.5rem);
  font-weight: 560;
  line-height: 0.98;
  letter-spacing: -0.02em;
}

.prose h2 {
  margin: 3rem 0 0.75rem;
  font-size: 1.5rem;
  letter-spacing: -0.01em;
}

.prose p,
.prose ul {
  max-width: 65ch;
  margin-bottom: 1rem;
  text-wrap: pretty;
}

.prose ul {
  padding-left: 1.25rem;
}

.prose li + li {
  margin-top: 0.375rem;
}

.prose li::marker {
  color: var(--color-accent);
}

.prose .lead {
  margin-bottom: 2rem;
  font-size: clamp(1.125rem, 1rem + 0.5vw, 1.375rem);
  line-height: 1.5;
  color: var(--color-text-secondary);
}

.prose a {
  overflow-wrap: anywhere;
  text-decoration-color: var(--color-accent);
  transition: text-decoration-thickness 150ms var(--ease);
}

.prose code {
  white-space: nowrap;
}

@media (hover: hover) {
  .prose a:hover {
    text-decoration-thickness: 2px;
  }
}

/* Key facts, such as the cookie's name and lifetime */
.facts {
  display: grid;
  grid-template-columns: max-content 1fr;
  margin: 0 0 2rem;
  font-size: 1rem;
  border-top: 1px solid var(--color-text);
}

.facts dt,
.facts dd {
  padding-block: 0.75rem;
  border-bottom: 1px solid var(--color-border);
}

.facts dt {
  padding-right: 2rem;
  font-weight: 500;
  color: var(--color-text-secondary);
}

@media (max-width: 30rem) {
  .facts {
    grid-template-columns: 1fr;
  }

  .facts dt {
    padding-bottom: 0;
    border-bottom: 0;
  }

  .facts dd {
    padding-top: 0.125rem;
  }
}

/* Assistants and docs pages
   ========================================================================== */

.prose h3 {
  margin: 2rem 0 0.75rem;
  font-size: var(--text-body);
  font-weight: 600;
}

.prose h2 + h3 {
  margin-top: 1.25rem;
}

.prose h3 code {
  font-size: 0.9375em;
}

.prose .steps {
  margin-bottom: 1rem;
}

.prose .steps li + li {
  margin-top: 0;
}

.prose .steps b {
  font-weight: 600;
  white-space: nowrap;
}

.prose-note {
  font-size: 1rem;
  color: var(--color-text-secondary);
}

.prose-copyable {
  margin-bottom: 1.5rem;
}

/* A command wraps rather than runs off a phone screen */
.prose .copyable code {
  white-space: normal;
}

/* So does a long path */
.prose code.path {
  white-space: normal;
  overflow-wrap: anywhere;
}

.prose pre {
  margin: 0 0 1.5rem;
  padding: 1rem 1.25rem;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  line-height: 1.55;
  background: var(--color-subtle);
  border-radius: var(--radius-md);
}

.prose pre code {
  padding: 0;
  font-size: inherit;
  white-space: inherit;
  background: none;
}

.toc ul {
  display: flex;
  flex-wrap: wrap;
  gap: 0.375rem 1.25rem;
  max-width: none;
  margin-bottom: 1rem;
  padding: 0;
  font-size: 1rem;
  list-style: none;
}

.toc li + li {
  margin-top: 0;
}

/* On wide screens the contents move to a rail on the right and stay in view.
   Pages whose contents only make sense as a rail hide them on smaller screens. */
@media (min-width: 72rem) {
  .prose:has(> .toc) {
    position: relative;
  }

  /* Headlines keep clear of the rail */
  .prose:has(> .toc) > h1 {
    max-width: min(60rem, 100% - 17rem);
  }

  .prose > .toc {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    width: 13rem;
    max-width: none;
    padding-top: clamp(2.5rem, 7vw, 5.5rem);
  }

  .prose > .toc ul {
    position: sticky;
    top: 2rem;
    flex-direction: column;
    gap: 1.25rem;
    padding-left: 1.25rem;
    font-size: 1.25rem;
    line-height: 1.3;
    border-left: 1px solid var(--color-rule);
  }

  .prose > .toc a {
    position: relative;
    display: block;
    color: var(--color-text-secondary);
    text-decoration: none;
    transition: color 150ms var(--ease);
  }

  @media (hover: hover) {
    .prose > .toc a:hover {
      color: var(--color-text);
    }
  }

  /* The section being read, marked on the rule */
  .prose > .toc a[aria-current] {
    color: var(--color-text);
  }

  .prose > .toc a[aria-current]::before {
    position: absolute;
    top: 0;
    bottom: 0;
    left: calc(-1.25rem - 1px);
    width: 2px;
    content: "";
    background: var(--color-accent);
  }
}

@media (max-width: 71.99rem) {
  .toc--aside {
    display: none;
  }
}

/* Long field names wrap in their own column rather than squeeze the text */
.prose--docs .facts {
  grid-template-columns: fit-content(12rem) minmax(0, 1fr);
}

/* Tables and code run as wide as the headline, clear of the rail */
.prose--docs > :is(.facts, pre) {
  max-width: none;
}

@media (min-width: 72rem) {
  .prose--docs > :is(.facts, pre) {
    max-width: min(60rem, 100% - 17rem);
  }
}

@media (max-width: 30rem) {
  .prose--docs .facts {
    grid-template-columns: minmax(0, 1fr);
  }
}

/* Accounts and alerts
   ========================================================================== */

/* Forms stay a short, centred column */
.prose--narrow {
  width: min(100% - 2 * var(--gutter), 36rem);
}

.form {
  display: grid;
  gap: 0.5rem;
  max-width: 26rem;
  margin-block: 0.5rem 2rem;
}

.form label {
  font-size: 1rem;
  font-weight: 500;
}

.input {
  width: 100%;
  height: 2.75rem;
  padding: 0 0.875rem;
  font-size: 1.0625rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-sm);
  transition: border-color 150ms var(--ease), box-shadow 150ms var(--ease);
}

.input:focus-visible {
  border-color: var(--color-focus);
  outline: 2px solid transparent;
  box-shadow: 0 0 0 3px var(--color-border);
}

.input[aria-invalid="true"] {
  border-color: var(--color-accent-text);
}

.form-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
  margin-top: 0.5rem;
}

.form-actions .button,
.form .button {
  padding: 0.5625rem 1rem;
}

.form-error {
  font-size: 1rem;
  color: var(--color-accent-text);
}

.prose .form-note {
  font-size: 1rem;
  color: var(--color-text-secondary);
}

/* "Alert me", beside the status line; the sort and format controls stay right */
.alert-me {
  display: flex;
  margin-right: auto;
}

.alert-me .button {
  white-space: normal;
  text-align: left;
}

.alert-me .button svg {
  width: 1rem;
  height: 1rem;
  color: var(--color-accent-text);
}

.alert-me-what {
  color: var(--color-text-secondary);
}

.alert-me-what:not(:empty)::before {
  content: " · ";
}

.site-header--search .site-nav {
  flex: none;
  margin-left: auto;
}

/* Phones keep the whole width for the search; "Alert me" is there anyway */
@media (max-width: 40rem) {
  .site-header--search .site-nav {
    display: none;
  }
}

.button--danger {
  color: var(--color-on-primary);
  background: var(--color-accent-text);
}

@media (hover: hover) {
  .button--danger:hover {
    background: var(--color-accent);
  }
}

.checkbox {
  display: flex;
  gap: 0.625rem;
  align-items: center;
  font-size: 1rem;
  cursor: pointer;
}

.checkbox input {
  width: 1.125rem;
  height: 1.125rem;
  margin: 0;
  accent-color: var(--color-accent-text);
}

/* The code from a sign-in email */
.input--code {
  max-width: 11rem;
  font-family: var(--font-mono);
  font-size: 1.375rem;
  letter-spacing: 0.2em;
}

/* Connecting an assistant: what to check before allowing it */
.prose .warning {
  padding: 0.875rem 1rem;
  font-size: 1rem;
  background: var(--color-subtle);
  border-left: 3px solid var(--color-accent);
  border-radius: var(--radius-sm);
}

/* Connected assistants, on the account page */
.prose .connections {
  display: grid;
  margin: 0 0 1rem;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--color-border);
}

.prose .connections li {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.5rem;
  align-items: center;
  justify-content: space-between;
  margin: 0;
  padding-block: 0.875rem;
  border-bottom: 1px solid var(--color-border);
}

.prose .connections p {
  margin: 0;
}

.connection-name {
  font-weight: 500;
}

.connection-host {
  font-weight: 400;
  color: var(--color-text-secondary);
}

.prose .connection-meta {
  font-size: 1rem;
  color: var(--color-text-secondary);
}

.prose--alerts {
  --prose-column: 48rem;
}

.alerts {
  display: grid;
  gap: 1rem;
  margin: 2rem 0;
  padding: 0;
  list-style: none;
}

/* The grid spaces the cards, not the prose list's margin */
.prose .alerts > li + li,
.prose .plans > li + li {
  margin-top: 0;
}

.alert-card {
  padding: 1.25rem 1.5rem 1.375rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  scroll-margin-top: 2rem;
  transition: border-color 300ms var(--ease), box-shadow 300ms var(--ease);
}

/* The alert just set or changed */
.alert-card:target {
  border-color: var(--color-border-strong);
  box-shadow: 0 0 0 3px var(--color-accent-subtle);
}

.prose .alert-card p {
  max-width: none;
  margin: 0;
}

.alert-head {
  display: flex;
  flex-wrap: wrap;
  gap: 0.375rem 1rem;
  align-items: baseline;
  justify-content: space-between;
}

.prose .alert-title {
  margin: 0;
  font-size: 1.375rem;
  overflow-wrap: anywhere;
}

.prose .alert-title a {
  text-decoration: none;
}

@media (hover: hover) {
  .prose .alert-title a:hover {
    text-decoration: underline;
    text-decoration-color: var(--color-accent);
  }
}

.alert-status {
  flex: none;
  padding: 0.125rem 0.5rem;
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  background: var(--color-subtle);
  border-radius: 999px;
}

.alert-card--found .alert-status {
  color: var(--color-accent-text);
  background: var(--color-accent-subtle);
}

.alert-card--live .alert-status {
  color: var(--color-positive);
}

.prose .alert-watching {
  margin-top: 0.25rem;
  font-size: 1rem;
  color: var(--color-text-secondary);
}

.prose .alert-meta {
  margin-top: 0.75rem;
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
}

.alert-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1rem;
}

.alert-actions .button,
.alert-lower .button {
  padding: 0.5rem 0.9375rem;
}

.found {
  display: grid;
  gap: 0.125rem;
  margin-top: 1rem;
  padding-top: 1rem;
  font-size: 1rem;
  border-top: 1px solid var(--color-border);
}

.prose .found-when {
  margin-bottom: 0.25rem;
  font-size: 0.8125rem;
  color: var(--color-accent-text);
}

.prose .found-title {
  font-size: 1.125rem;
  font-weight: 600;
}

.found-author {
  font-weight: 400;
  color: var(--color-text-secondary);
}

.found-seller {
  color: var(--color-text-secondary);
}

.found-words {
  margin: 0.625rem 0 0;
  padding-left: 1rem;
  font-style: italic;
  color: var(--color-text-secondary);
  border-left: 3px solid var(--color-border);
}

.alert-lower {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
  margin-top: 0.875rem;
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
}

.money-input {
  display: inline-flex;
  gap: 0.375rem;
  align-items: center;
  color: var(--color-text);
}

.money-input .input {
  width: 6.5rem;
  height: 2.375rem;
}

.prose .alerts-plan {
  font-size: 1rem;
  color: var(--color-text-secondary);
}

.alerts-empty {
  display: grid;
  gap: 1.25rem;
  margin: 2rem 0;
  padding: 1.5rem;
  background: var(--color-subtle);
  border-radius: var(--radius-lg);
}

.prose .alerts-empty p {
  margin: 0;
}

/* Plans */

.prose--plans {
  --prose-column: none;
}

/* Searching, free for everyone, in a band above the alert plans */
.plans-search {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 2rem;
  align-items: center;
  justify-content: space-between;
  margin-top: 2.5rem;
  padding: 1.25rem clamp(1.25rem, 3vw, 1.5rem);
  background: var(--color-subtle);
  border-radius: var(--radius-lg);
}

.plans-search > div {
  flex: 1 1 26rem;
}

.prose .plans-search-title {
  margin: 0 0 0.375rem;
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
}

.prose .plans-search p {
  max-width: none;
  margin: 0;
  font-size: 1.0625rem;
}

.plans-search strong {
  font-weight: 600;
}

.prose .plans-search-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.plans {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(14rem, 1fr));
  gap: 1rem;
  margin: 1rem 0 1.25rem;
  padding: 0;
  list-style: none;
}

.plan {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  padding: 1.5rem 1.5rem 1.75rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}

.plan--current {
  border-color: var(--color-border-strong);
  box-shadow: 0 0 0 3px var(--color-accent-subtle);
}

.prose .plan-name {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: baseline;
  justify-content: space-between;
  margin: 0;
  font-size: 1.5rem;
}

.plan-badge {
  padding: 0.125rem 0.5rem;
  font-size: 0.8125rem;
  font-weight: 400;
  letter-spacing: 0;
  color: var(--color-accent-text);
  background: var(--color-accent-subtle);
  border-radius: 999px;
}

/* The amount large, "a month" and the year's price beside and under it */
.prose .plan-price {
  display: grid;
  gap: 0.125rem;
  margin: 0;
  font-size: 1rem;
  color: var(--color-text-secondary);
}

.plan-price strong {
  margin-right: 0.125rem;
  font-size: clamp(2.25rem, 1.9rem + 1vw, 2.75rem);
  font-weight: 560;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--color-text);
}

.prose .plan-features {
  margin: 0;
  padding: 1rem 0 0;
  font-size: 1rem;
  list-style: none;
  border-top: 1px solid var(--color-border);
}

.prose .plan-features li + li {
  margin-top: 0.25rem;
}

.prose .plan-features .plan-alerts {
  margin-bottom: 0.5rem;
  font-size: 1.375rem;
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.01em;
}

/* As wide as the cards */
.prose .plans-note {
  max-width: var(--prose-column);
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
}

.prose .plans-soon {
  display: inline-block;
  margin-top: 1rem;
  padding: 0.75rem 1rem;
  font-size: 1rem;
  background: var(--color-subtle);
  border-radius: var(--radius-md);
}

.prose .plans-action {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 0.75rem;
  align-items: center;
  font-size: 1rem;
  color: var(--color-text-secondary);
}

.plans-form {
  max-width: 38rem;
  margin-top: 2rem;
}

/* Sized like the home page's sections and features */
.prose .plans-questions {
  margin-top: clamp(3.5rem, 7vw, 6rem);
  font-size: clamp(2rem, 1.2rem + 3vw, 3.75rem);
  font-weight: 560;
  line-height: 1;
  letter-spacing: -0.02em;
}

.questions {
  display: grid;
  gap: 2rem clamp(1.5rem, 4vw, 3rem);
  margin-top: 1.5rem;
}

@media (min-width: 48rem) {
  .questions {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.question {
  padding-top: 1.25rem;
  border-top: 1px solid var(--color-text);
}

.prose .question h3 {
  margin: 0 0 0.5rem;
  font-size: clamp(1.375rem, 1.15rem + 0.8vw, 1.875rem);
  letter-spacing: -0.015em;
}

.prose .question p {
  margin: 0;
  color: var(--color-text-secondary);
}

.prose .plans-more {
  margin-top: 2.5rem;
  font-size: 1rem;
  color: var(--color-text-secondary);
}

.plan-choices {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
  gap: 0.5rem;
  margin: 0 0 0.75rem;
  padding: 0;
  border: 0;
}

.plan-choices legend {
  margin-bottom: 0.5rem;
  font-size: 1rem;
  font-weight: 500;
}

.plan-choice {
  display: flex;
  gap: 0.625rem;
  align-items: center;
  padding: 0.75rem 1rem;
  font-size: 1rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
}

.plan-choice:has(input:checked) {
  border-color: var(--color-text);
  box-shadow: inset 0 0 0 1px var(--color-text);
}

.plan-choice input {
  margin: 0;
  accent-color: var(--color-accent-text);
}

.checkbox--top {
  align-items: flex-start;
}

.checkbox--top input {
  margin-top: 0.25rem;
}

/* Labels, navigation and small controls take the pixel mono
   ========================================================================== */
.eyebrow,
.site-nav,
.button,
.alert-status,
.found-when,
.plan-badge,
.plans-search-title,
.sellers-title,
.results-status,
.results-more,
.also-title,
.also-all,
.offer-type,
.product-claim,
.product-match,
.copyable-label,
.demo-status,
.hero-examples,
.hero-assistants,
.segmented span,
.site-footer-inner {
  font-family: var(--font-mono);
  font-weight: 400;
  letter-spacing: 0;
}

.eyebrow,
.plans-search-title,
.sellers-title,
.copyable-label {
  text-transform: uppercase;
}