/*
 * GuardianMemory marketing site.
 * One stylesheet for the landing page and the docs. No build step, no framework.
 */

:root {
  --charcoal: #0F1117;
  --charcoal-light: #1A1D27;
  --charcoal-mid: #2D3142;
  --orange: #E8652D;
  --orange-dark: #D1551F;
  --grey-100: #F3F4F6;
  --grey-200: #E5E7EB;
  --grey-300: #D1D5DB;
  --grey-400: #9CA3AF;
  --grey-500: #6B7280;
  --grey-700: #374151;
  --page: #F3F4F8;
  --success: #065F46;
  --success-light: #ECFDF5;
  --danger: #991B1B;
  --danger-light: #FEF2F2;
  --radius: 10px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

body {
  margin: 0;
  font: 17px/1.6 var(--font);
  color: var(--charcoal);
  background: #fff;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 { margin: 0 0 0.6em; line-height: 1.15; letter-spacing: -0.02em; font-weight: 700; }
h1 { font-size: clamp(2.2rem, 5.2vw, 3.6rem); }
h2 { font-size: clamp(1.6rem, 3.2vw, 2.25rem); }
h3 { font-size: 1.15rem; letter-spacing: -0.01em; }
p { margin: 0 0 1rem; }
a { color: inherit; }
ul, ol { margin: 0 0 1rem; padding-left: 1.3rem; }
li { margin-bottom: 0.4rem; }
code { font: 0.92em var(--mono); background: var(--grey-100); padding: 0.1em 0.4em; border-radius: 4px; }
pre { margin: 0 0 1rem; font: 0.88rem/1.5 var(--mono); white-space: pre-wrap; word-break: break-word; }
pre code { background: none; padding: 0; font-size: inherit; }
hr { border: 0; border-top: 1px solid var(--grey-200); margin: 2.5rem 0; }

.wrap { max-width: 1080px; margin: 0 auto; padding: 0 20px; }
.measure { max-width: 640px; }
.row { display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.visually-hidden {
  position: absolute; width: 1px; height: 1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap;
}
.skip-link {
  position: absolute; left: 20px; top: -100px; z-index: 10;
  background: var(--orange); color: #fff; padding: 0.7rem 1rem;
  border-radius: 0 0 8px 8px; text-decoration: none; font-weight: 600;
}
.skip-link:focus { top: 0; }

/* ---------------------------------------------------------------- Buttons */

.btn {
  display: inline-block;
  font: inherit;
  font-weight: 600;
  padding: 0.7rem 1.2rem;
  border-radius: 8px;
  border: 1px solid transparent;
  text-decoration: none;
  cursor: pointer;
  line-height: 1.2;
}
.btn-primary { background: var(--orange); color: #fff; }
.btn-primary:hover { background: var(--orange-dark); }
.btn-lg { padding: 0.95rem 1.5rem; font-size: 1.05rem; }
.btn-sm { padding: 0.5rem 0.9rem; font-size: 0.92rem; }
.btn-text { font-weight: 600; text-decoration: underline; text-underline-offset: 3px; }
.btn[disabled] { opacity: 0.6; cursor: progress; }

:focus-visible { outline: 3px solid var(--orange); outline-offset: 3px; }
.site-head :focus-visible, .hero :focus-visible, .final :focus-visible, .site-foot :focus-visible {
  outline-color: #fff;
}

.cta-row { display: flex; align-items: center; gap: 1.25rem; flex-wrap: wrap; margin: 1.75rem 0 0.75rem; }
.fine { font-size: 0.92rem; color: var(--grey-500); }

/* ----------------------------------------------------------------- Header */

.site-head { background: var(--charcoal); color: #fff; }
.site-head .row { min-height: 64px; }
.wordmark { font-weight: 700; font-size: 1.15rem; text-decoration: none; letter-spacing: -0.01em; }
.wordmark span { color: var(--orange); }
.site-nav { display: flex; align-items: center; gap: 1.4rem; }
.site-nav a { color: var(--grey-300); text-decoration: none; font-size: 0.95rem; }
.site-nav a:hover, .site-nav a[aria-current] { color: #fff; }
.site-nav .btn { color: #fff; }

.nav-toggle {
  display: none;
  font: inherit; color: #fff; background: none;
  border: 1px solid var(--charcoal-mid); border-radius: 8px;
  padding: 0.45rem 0.8rem; cursor: pointer;
}

@media (max-width: 800px) {
  .nav-toggle { display: block; }
  .site-head .row { flex-wrap: wrap; padding-bottom: 0; }
  .site-nav {
    display: none;
    flex-basis: 100%;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    border-top: 1px solid var(--charcoal-mid);
    padding: 0.5rem 0 1rem;
  }
  .site-nav.open { display: flex; }
  .site-nav a { padding: 0.6rem 0; width: 100%; }
  .site-nav .btn { margin-top: 0.5rem; }
  /* No JavaScript means no menu button, so never collapse the navigation. */
  html:not(.js) .site-nav { display: flex; }
}

/* ------------------------------------------------------------------- Hero */

.hero { background: var(--charcoal); color: #fff; padding: 4.5rem 0 4rem; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr); gap: 3.5rem; align-items: center; }
.hero .lead { font-size: 1.2rem; color: var(--grey-300); max-width: 34rem; }
.hero .fine { color: var(--grey-400); }

.invite-form { display: flex; gap: 0.6rem; margin: 1.75rem 0 0.75rem; max-width: 30rem; flex-wrap: wrap; }
.invite-form input {
  flex: 1 1 14rem;
  min-width: 0;
  font: inherit;
  padding: 0.9rem 1rem;
  border-radius: 8px;
  border: 1px solid var(--charcoal-mid);
  background: var(--charcoal-light);
  color: #fff;
}
.invite-form input::placeholder { color: var(--grey-500); }

.flash {
  padding: 0.7rem 1rem;
  border-radius: 8px;
  font-size: 0.95rem;
  margin: 1.25rem 0 0;
  max-width: 34rem;
}
.flash-ok { background: var(--success-light); color: var(--success); }
.flash-error { background: var(--danger-light); color: var(--danger); }
[hidden] { display: none !important; }

/* The demo: one memory, two assistants, two days apart. */
.hero-demo { display: flex; flex-direction: column; gap: 1rem; }
.chat { background: var(--charcoal-light); border: 1px solid var(--charcoal-mid); border-radius: var(--radius); padding: 1rem 1.1rem; }
.chat header { display: flex; justify-content: space-between; font-size: 0.85rem; color: var(--grey-400); margin-bottom: 0.75rem; }
.chat header strong { color: #fff; }
.chat .msg { margin: 0 0 0.6rem; font-size: 0.97rem; line-height: 1.45; }
.chat .you { color: #fff; }
.chat .you::before { content: "You  "; color: var(--grey-500); font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.06em; }
.chat .bot { color: var(--grey-300); }
.chat .tool {
  margin: 0.3rem 0; padding: 0.4rem 0.6rem; border-radius: 6px;
  background: var(--charcoal); font: 0.8rem/1.45 var(--mono);
  color: var(--grey-300); word-break: break-word;
}
.chat .tool span { color: var(--orange); margin-right: 0.6rem; }
.chat .tool.result { color: var(--grey-400); }
.chat .tool.result em { color: var(--grey-500); font-style: normal; margin-left: 0.4rem; }
.demo-caption { font-size: 0.9rem; color: var(--grey-400); margin: 0; }

@media (max-width: 860px) {
  .hero { padding: 3rem 0; }
  .hero-grid { grid-template-columns: 1fr; gap: 2.5rem; }
}

/* --------------------------------------------------------------- Sections */

section { padding: 5rem 0; }
.tension p { font-size: 1.15rem; color: var(--grey-700); }
.connect { background: var(--page); }
.split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 3.5rem; align-items: start; }
.works-with { font-size: 0.95rem; color: var(--grey-500); margin-top: 1.5rem; }
@media (max-width: 860px) {
  .split { grid-template-columns: 1fr; gap: 2rem; }
  section { padding: 3.5rem 0; }
}

/* Code panels, on the landing page and in the docs. */
.snippet { background: var(--charcoal); color: #F9FAFB; border-radius: var(--radius); padding: 1.4rem 1.5rem; }
.snippet pre { color: #F9FAFB; }
.snippet-label { font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--grey-400); margin: 0 0 0.35rem; }
.snippet-note { font-size: 0.9rem; color: var(--grey-400); margin: 0.75rem 0 0; }

.code { position: relative; margin: 0 0 1.25rem; }
.code:last-child { margin-bottom: 0; }
.code pre {
  background: var(--charcoal);
  color: #F9FAFB;
  border-radius: 8px;
  padding: 0.9rem 3.6rem 0.9rem 1rem;
  margin: 0;
  /* Scroll rather than wrap: a command broken mid-token is a command people mistype. */
  white-space: pre;
  overflow-x: auto;
}
.snippet .code pre { background: #000; }
.copy {
  position: absolute; top: 0.5rem; right: 0.5rem;
  font: 600 0.75rem/1 var(--font);
  color: var(--grey-300); background: var(--charcoal-mid);
  border: 0; border-radius: 6px; padding: 0.4rem 0.55rem; cursor: pointer;
}
.copy:hover { color: #fff; background: #3c4257; }
.copy[data-copied] { color: #fff; background: var(--orange); }
html:not(.js) .copy { display: none; }

/* Client tabs. With no JavaScript every panel is simply shown. */
.tabs { display: flex; flex-wrap: wrap; gap: 0.4rem; margin: 0 0 1rem; padding: 0; border-bottom: 1px solid var(--charcoal-mid); }
.tabs button {
  font: 600 0.9rem/1 var(--font);
  color: var(--grey-400); background: none; border: 0;
  border-bottom: 2px solid transparent;
  padding: 0.6rem 0.7rem; cursor: pointer;
}
.tabs button:hover { color: #fff; }
.tabs button[aria-selected="true"] { color: #fff; border-bottom-color: var(--orange); }
/* Every panel ships visible and stacked; the tab strip and the collapsing are
   both added by JavaScript, so a page without it is a complete page. */
html:not(.js) .tabs { display: none; }
/* The panel heading is what labels each block when the tabs are not there;
   with JavaScript the selected tab already says it. */
.tab-panel h3 { color: #fff; font-size: 0.95rem; margin-bottom: 0.5rem; }
html.js .tab-panel h3 { display: none; }
html:not(.js) .tab-panel + .tab-panel { margin-top: 1.5rem; }

/* Comparison table */
.compare { width: 100%; border-collapse: collapse; margin-top: 2rem; font-size: 0.98rem; }
.compare th, .compare td { text-align: left; padding: 0.85rem 1rem; border-bottom: 1px solid var(--grey-200); vertical-align: top; }
.compare thead th { font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--grey-500); font-weight: 600; }
.compare tbody th { font-weight: 600; width: 34%; }
.compare td { color: var(--grey-500); }
.compare td.yes { color: var(--charcoal); font-weight: 600; }
@media (max-width: 640px) {
  .compare thead { display: none; }
  .compare tr { display: block; padding: 0.75rem 0; border-bottom: 1px solid var(--grey-200); }
  .compare th, .compare td, .compare tbody th { display: block; border: 0; padding: 0.15rem 0; width: auto; }
  .compare td::before { content: "Elsewhere: "; font-size: 0.8rem; color: var(--grey-400); }
  .compare td.yes::before { content: "GuardianMemory: "; }
}

.privacy { background: var(--page); }
.privacy p { color: var(--grey-700); }
.final { background: var(--charcoal); color: #fff; }
.final .fine { color: var(--grey-400); }

/* ----------------------------------------------------------------- Footer */

.site-foot { background: var(--charcoal); color: var(--grey-400); font-size: 0.9rem; border-top: 1px solid var(--charcoal-mid); }
.site-foot .row { min-height: 60px; padding-top: 0.75rem; padding-bottom: 0.75rem; flex-wrap: wrap; }
.site-foot nav { display: flex; gap: 1.2rem; flex-wrap: wrap; }
.site-foot a { color: var(--grey-400); text-decoration: none; }
.site-foot a:hover { color: #fff; }

/* ------------------------------------------------------------------- Docs */

.docs { display: grid; grid-template-columns: 220px minmax(0, 1fr); gap: 3rem; align-items: start; padding: 3rem 0 5rem; }

.docs-nav { position: sticky; top: 2rem; font-size: 0.95rem; }
.docs-nav h2 { font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--grey-500); margin: 0 0 0.6rem; }
.docs-nav ul { list-style: none; margin: 0 0 1.75rem; padding: 0; }
.docs-nav li { margin: 0; }
.docs-nav a {
  display: block; padding: 0.35rem 0.7rem; margin-left: -0.7rem;
  border-radius: 6px; text-decoration: none; color: var(--grey-700);
}
.docs-nav a:hover { background: var(--grey-100); color: var(--charcoal); }
.docs-nav a[aria-current="page"] { background: var(--charcoal); color: #fff; font-weight: 600; }

.docs-body { max-width: 46rem; }
.docs-body > h1 { font-size: clamp(1.9rem, 4vw, 2.6rem); margin-bottom: 0.4em; }
.docs-body .lead { font-size: 1.15rem; color: var(--grey-700); margin-bottom: 2rem; }
.docs-body h2 { font-size: 1.5rem; margin-top: 2.75rem; padding-top: 0.5rem; }
.docs-body h3 { margin-top: 1.75rem; }
.docs-body h2:first-of-type { margin-top: 2rem; }

.docs-body table { width: 100%; border-collapse: collapse; margin: 0 0 1.5rem; font-size: 0.95rem; display: block; overflow-x: auto; }
.docs-body th, .docs-body td { text-align: left; padding: 0.6rem 0.9rem; border-bottom: 1px solid var(--grey-200); vertical-align: top; }
.docs-body thead th { font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.07em; color: var(--grey-500); }
.docs-body td code { white-space: nowrap; }

.note {
  border-left: 3px solid var(--orange);
  background: var(--page);
  padding: 1rem 1.2rem;
  border-radius: 0 8px 8px 0;
  margin: 0 0 1.5rem;
  font-size: 0.97rem;
}
.note p:last-child { margin-bottom: 0; }
.note strong { color: var(--charcoal); }

.next-page {
  display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap;
  margin-top: 3.5rem; padding-top: 1.5rem; border-top: 1px solid var(--grey-200);
  font-weight: 600;
}
.next-page a { text-decoration: none; color: var(--orange-dark); }
.next-page a:hover { text-decoration: underline; text-underline-offset: 3px; }

@media (max-width: 860px) {
  .docs { grid-template-columns: 1fr; gap: 1.5rem; padding-top: 2rem; }
  .docs-nav { position: static; border-bottom: 1px solid var(--grey-200); padding-bottom: 1rem; }
  .docs-nav ul { display: flex; flex-wrap: wrap; gap: 0.3rem; margin-bottom: 1rem; }
  .docs-nav a { margin-left: 0; padding: 0.35rem 0.7rem; background: var(--grey-100); }
}