/* otto.alfaoz.dev: IBM Plex Mono on the icon's two colors. the dark parts are the icon's tile. */

@font-face { font-family: "Plex Mono"; font-weight: 400; font-style: normal; font-display: swap; src: url(/fonts/plex-mono-regular.woff2) format("woff2"); }
@font-face { font-family: "Plex Mono"; font-weight: 400; font-style: italic; font-display: swap; src: url(/fonts/plex-mono-italic.woff2) format("woff2"); }
@font-face { font-family: "Plex Mono"; font-weight: 600; font-style: normal; font-display: swap; src: url(/fonts/plex-mono-semibold.woff2) format("woff2"); }

:root {
  --paper: #f0ece2;
  --ink: #161618;
  --ink-2: #5c5a55;
  --rule: rgb(22 22 24 / .14);
  --wash: rgb(22 22 24 / .05);
  --tile: linear-gradient(#28282b, #111113);
  --tile-edge: transparent;
  --on-tile: #f0ece2;
  --on-tile-2: rgb(240 236 226 / .6);
  --tile-ink: #161618;
  --gutter: clamp(1.25rem, 4vw, 3rem);
  --measure: 74rem;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --paper: #121214;
    --ink: #f0ece2;
    --ink-2: #a19e97;
    --rule: rgb(240 236 226 / .14);
    --wash: rgb(240 236 226 / .06);
    --tile: linear-gradient(#232326, #18181a);
    --tile-edge: rgb(240 236 226 / .08);
  }
}

* { box-sizing: border-box; }
html {
  background: var(--paper);
  color: var(--ink);
  font: 400 1rem/1.625 "Plex Mono", ui-monospace, Menlo, monospace;
  font-variant-ligatures: none;
  -webkit-font-smoothing: antialiased;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-behavior: smooth;
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body { margin: 0; }
::selection { background: var(--ink); color: var(--paper); }
a { color: inherit; text-decoration-thickness: 1px; text-underline-offset: .2em; }
:focus-visible { outline: 2px solid currentColor; outline-offset: 3px; border-radius: 4px; }
b { font-weight: 600; }
code { font: inherit; background: var(--wash); padding: .05em .4ch; border-radius: 4px; }
img { max-width: 100%; }
h1, h2 { font-weight: 600; margin: 0; }

/* the monogram, set in type: "ot" over "to" */
.mark { display: inline-block; font-weight: 600; line-height: .95; letter-spacing: -.02em; text-decoration: none; }
.mark span { display: block; }

.button {
  display: inline-block;
  padding: .85rem 2.5ch;
  border-radius: 10px;
  background: var(--ink);
  color: var(--paper);
  font-weight: 600;
  text-decoration: none;
  transition: opacity .15s;
}
.button:hover { opacity: .86; }
.button.small { padding: .45rem 1.75ch; border-radius: 8px; font-size: .875rem; }
.note { color: var(--ink-2); font-size: .875rem; }
.get { display: flex; flex-wrap: wrap; align-items: center; gap: 1rem 2.5ch; margin: 2.5rem 0 0; }

/* ---- the stage: the icon's tile, holding the opening and otto's window ---- */

.stage {
  position: relative;
  margin: clamp(.5rem, 1vw, .875rem);
  padding-inline: var(--gutter);
  border-radius: clamp(20px, 2.4vw, 34px);
  background:
    radial-gradient(42% 46% at 72% 36%, rgb(240 236 226 / .07), transparent 72%),
    linear-gradient(#262629, #0d0d0f 78%);
  box-shadow: inset 0 0 0 1px var(--tile-edge);
  color: var(--on-tile);
  overflow: hidden;
}
.stage > * { max-width: var(--measure); margin-inline: auto; }
.stage .button { background: var(--on-tile); color: var(--tile-ink); }
.stage .note { color: var(--on-tile-2); }

.nav { display: flex; align-items: center; justify-content: space-between; padding-block: clamp(1.25rem, 3vw, 2rem); }
.nav .mark { font-size: clamp(1.25rem, 1rem + 1vw, 1.625rem); }
.links { display: flex; align-items: center; gap: 3ch; font-size: .9375rem; }
.links a:not(.button) { color: var(--on-tile-2); text-decoration: none; transition: color .15s; }
.links a:not(.button):hover { color: var(--on-tile); }

.hero {
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  align-items: center;
  gap: 2rem 3ch;
  padding-block: clamp(2rem, 7vh, 5rem) clamp(3rem, 8vh, 5.5rem);
}
h1 {
  font-size: clamp(2.5rem, 1rem + 3.8vw, 4.25rem);
  line-height: 1;
  letter-spacing: -.04em;
  text-wrap: balance;
}
.lead { margin: 2rem 0 0; max-width: 50ch; color: var(--on-tile-2); font-size: clamp(1rem, .9rem + .3vw, 1.1875rem); line-height: 1.6; }

/* the fingerprint: site.js draws it in dots, with what agents did pinned to it */
.print { position: relative; aspect-ratio: 1 / 1.06; }
.print canvas, .print svg { position: absolute; inset: 0; width: 100%; height: 100%; }
.print svg { overflow: visible; }
.print line { stroke: rgb(240 236 226 / .45); stroke-width: 1; }
.print rect { fill: none; stroke: var(--on-tile); stroke-width: 1; }
.tag {
  position: absolute;
  left: 0;
  top: 0;
  display: flex;
  align-items: center;
  gap: 1ch;
  padding: .3em 1.2ch;
  border-radius: 5px;
  background: var(--on-tile);
  color: var(--tile-ink);
  font-size: .8125rem;
  font-weight: 600;
  line-height: 1.3;
  white-space: nowrap;
  opacity: 0;
  transition: opacity .3s, translate .3s;
  translate: 0 4px;
}
/* the agents' colors in otto */
.tag i { width: .55em; height: .55em; border-radius: 50%; }
.tag .claude { background: #d97857; }
.tag .codex { background: #73c79e; }
.tag.on { opacity: 1; translate: 0 0; }
.print line, .print rect { opacity: 0; transition: opacity .3s; }
.print .on { opacity: 1; }
@media (scripting: none) { .print { display: none; } }

.shot {
  display: block;
  width: min(100%, 1000px);
  height: auto;
  margin-bottom: max(-14%, -150px);
  filter: drop-shadow(0 -2px 0 rgb(240 236 226 / .06)) drop-shadow(0 30px 60px rgb(0 0 0 / .5));
}

@media (max-width: 59.99rem) {
  .hero { grid-template-columns: minmax(0, 1fr); }
  .print { width: min(100%, 30rem); justify-self: center; }
}
@media (max-width: 35.99rem) {
  .links a:not(.button) { display: none; }
  .tag { font-size: .6875rem; }
}

/* ---- what otto is for ---- */

main > section.why { margin-top: clamp(5rem, 11vw, 9rem); }
.why p {
  max-width: 30ch;
  font-size: clamp(1.5rem, .9rem + 2.3vw, 2.75rem);
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: -.035em;
  text-wrap: pretty;
}
.why p:first-child { color: var(--ink-2); }
.why p + p { margin-top: .7em; }
/* the password, out in the open */
.secret { padding: 0 .25ch; border-radius: .15em; background: var(--ink); color: var(--paper); }

/* ---- what it does: otto's own windows ---- */

main { max-width: var(--measure); margin-inline: auto; padding-inline: var(--gutter); }
.features {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: clamp(.75rem, 1.2vw, 1rem);
  margin-top: clamp(4rem, 9vw, 7.5rem);
  scroll-margin-top: 2rem;
}
.tile {
  grid-column: span 5;
  display: flex;
  flex-direction: column;
  min-height: 30rem;
  padding-bottom: clamp(1.5rem, 2.4vw, 2.25rem);
  overflow: hidden;
  border-radius: clamp(18px, 2vw, 26px);
  background:
    radial-gradient(70% 55% at 60% 100%, rgb(240 236 226 / .06), transparent 70%),
    var(--tile);
  box-shadow: inset 0 0 0 1px var(--tile-edge);
  color: var(--on-tile);
}
.tile.wide { grid-column: span 7; }
.tile.half { grid-column: span 6; min-height: 0; }
.cap { margin-bottom: 1.75rem; padding: clamp(1.5rem, 2.4vw, 2rem) clamp(1.5rem, 2.4vw, 2.25rem) 0; }
.cap h2 { font-size: 1.0625rem; line-height: 1.35; letter-spacing: -.01em; }
.cap p { margin: .375rem 0 0; max-width: 46ch; color: var(--on-tile-2); font-size: .9375rem; line-height: 1.55; }
/* otto's windows, whole: at their own size where they fit, smaller where they don't, never cut */
.tile > img {
  display: block;
  flex: none;
  max-width: calc(100% - 2 * clamp(1.5rem, 2.4vw, 2.25rem));
  height: auto;
  max-height: 33rem;
  margin: auto;
  object-fit: contain;
  filter: drop-shadow(0 0 .5px rgb(240 236 226 / .45)) drop-shadow(0 24px 48px rgb(0 0 0 / .5));
}
/* a piece of a window: framed, with the page's corners */
.tile > img.panel { border-radius: 14px; box-shadow: 0 0 0 1px rgb(240 236 226 / .1), 0 24px 48px rgb(0 0 0 / .4); filter: none; }
/* a tall window: its top half, running off the bottom of the tile */
.tile.top, .tile.tall { height: 33rem; }
.tile.top { padding-bottom: 0; }
.tile.top > img { max-height: none; margin: 0 auto; object-fit: fill; }
.tile > img.fade { -webkit-mask-image: linear-gradient(#000 62%, transparent); mask-image: linear-gradient(#000 62%, transparent); box-shadow: 0 0 0 1px rgb(240 236 226 / .1); }

@media (max-width: 59.99rem) {
  .tile, .tile.wide, .tile.half { grid-column: span 12; min-height: 0; }
  .tile.top { height: 28rem; }
  .tile.tall { height: auto; }
}

/* ---- the phone ---- */

main > section.phone {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  align-items: center;
  gap: 3rem 6ch;
  margin-top: clamp(5rem, 11vw, 9rem);
}
.device {
  justify-self: center;
  width: min(19rem, 78vw);
  padding: .55rem;
  border-radius: 3rem;
  background: #0b0b0d;
  box-shadow: inset 0 0 0 1px #3a3a3f, 0 40px 80px -24px rgb(0 0 0 / .5);
}
/* the screen runs to the top, round the island, in the page's own color */
.screen { position: relative; overflow: hidden; padding-top: 2.6rem; border-radius: 2.45rem; background: #18181a; }
.screen::before { content: ""; position: absolute; top: .6rem; left: 50%; width: 5.5rem; height: 1.5rem; margin-left: -2.75rem; border-radius: 1rem; background: #000; }
.screen img { display: block; width: 100%; height: auto; }
.about h2 { font-size: 1.3125rem; letter-spacing: -.015em; }
.lead2 { margin-top: .75rem; font-size: 1.125rem; line-height: 1.6; }
.more dt { font-weight: 600; }
.net { margin-top: 1.5rem; color: var(--ink-2); }
/* it's over Tailscale: that part reads first */
.phone b { color: var(--ink); font-weight: 600; }
@media (max-width: 59.99rem) {
  main > section.phone { grid-template-columns: minmax(0, 1fr); }
}
/* ---- the end: the icon and one line ---- */

main > section.end { display: grid; justify-items: center; margin-top: clamp(7rem, 14vw, 11rem); text-align: center; }
.end .icon { width: clamp(9rem, 16vw, 12.5rem); height: auto; transition: transform .5s cubic-bezier(.3, 1.4, .5, 1); }
.end .icon:hover { transform: rotate(-6deg) scale(1.04); }
.end .line { margin-top: 1.5rem; max-width: 24ch; font-size: clamp(1.5rem, .9rem + 2.3vw, 2.75rem); font-weight: 600; line-height: 1.2; letter-spacing: -.035em; text-wrap: balance; }
.end .get { justify-content: center; }

/* ---- and the rest ---- */

main > section:not(.features, .why, .phone, .end) {
  display: grid;
  grid-template-columns: minmax(0, 3fr) minmax(0, 9fr);
  gap: 1.5rem 4ch;
  margin-top: clamp(5rem, 11vw, 8.5rem);
  scroll-margin-top: 2rem;
}
main > section:not(.features) h2 { max-width: 16ch; font-size: 1.3125rem; line-height: 1.3; letter-spacing: -.015em; }
section p { margin: 0; max-width: 64ch; }
section p + p { margin-top: 1rem; }

.more dl { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 2rem 4ch; margin: 0; max-width: 60rem; }
.more dt { font-weight: 600; }
.more dd { margin: .25rem 0 0; color: var(--ink-2); font-size: .9375rem; line-height: 1.55; }

.setup ol { margin: 0; padding: 0; list-style: none; counter-reset: step; }
.setup li { display: grid; grid-template-columns: 4ch minmax(0, 1fr); counter-increment: step; }
.setup li + li { margin-top: .875rem; }
.setup li::before { content: counter(step); color: var(--ink-2); }
.setup .get { margin-left: 4ch; }

@media (max-width: 59.99rem) {
  main > section:not(.features, .why, .phone, .end) { grid-template-columns: minmax(0, 1fr); }
  main > section:not(.features) h2 { max-width: none; }
}
@media (max-width: 35.99rem) {
  .more dl { grid-template-columns: minmax(0, 1fr); }
  .setup .get { margin-left: 0; }
}

.foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem 4ch;
  max-width: var(--measure);
  margin: clamp(5rem, 9vw, 7rem) auto 0;
  padding: 2rem var(--gutter) 3rem;
  color: var(--ink-2);
  font-size: .875rem;
}
.foot .by { display: flex; align-items: center; gap: 2.5ch; }
.foot .mark { color: var(--ink); font-size: 1.125rem; }
.foot p { margin: 0; }
.foot nav { display: flex; gap: 3ch; }
.foot nav a { text-decoration: none; }
.foot nav a:hover { color: var(--ink); text-decoration: underline; }

/* ---- privacy and other pages of text ---- */

.text { max-width: 66ch; padding-block: clamp(3rem, 8vh, 6rem) 0; }
.text h1 { font-size: clamp(2rem, 1.2rem + 3vw, 3rem); }
.text h2 { margin: 3.5rem 0 1rem; font-size: 1.3125rem; }
.text h3 { margin: 2rem 0 .75rem; font-size: 1rem; font-weight: 600; }
.text h2 + h3 { margin-top: 1.25rem; }
.text p, .text li { max-width: 66ch; }
.text p { margin: 0 0 1rem; }
.text ul { margin: 0 0 1rem; padding-left: 2ch; }
.text li + li { margin-top: .5rem; }
.text .updated { margin-top: 1.5rem; color: var(--ink-2); font-size: .875rem; }