/* Landing and join pages. */

.site {
  font-size: 18px;
  line-height: 1.55;
}

.top,
.site main,
.foot {
  width: 100%;
  max-width: 1160px;
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}

.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 22px;
  padding-bottom: 22px;
}

.top nav a {
  font-weight: 600;
  font-size: 16px;
  text-decoration: none;
  padding: 8px 4px;
}

.top nav a:hover {
  text-decoration: underline;
}

:where(.site) h1,
:where(.site) h2,
:where(.site) h3 {
  font-family: var(--font-display);
  letter-spacing: -0.02em;
  margin: 0;
}

:where(.site) h2 {
  font-size: 36px;
  line-height: 1.1;
  font-weight: 800;
}

:where(.site) h3 {
  font-size: 21px;
  line-height: 1.25;
  font-weight: 700;
}

:where(.site) p {
  margin: 0;
}

:where(.site main) > section {
  padding: 72px 0;
  border-top: 1px solid var(--line);
}

.hero {
  border-top: 0;
}

.section-lede {
  margin-top: 12px;
  color: var(--muted);
  max-width: 60ch;
}

/* Hero */

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
  gap: 56px;
  align-items: center;
  padding-top: 40px;
}

.hero h1 {
  font-size: 68px;
  line-height: 1.02;
  font-weight: 800;
  letter-spacing: -0.035em;
  max-width: 13ch;
}

.lede {
  margin-top: 24px;
  font-size: 21px;
  line-height: 1.5;
  color: var(--muted);
  max-width: 34ch;
}

.hero .cmd {
  margin-top: 32px;
  max-width: 420px;
}

.fine {
  margin-top: 14px;
  font-size: 14px;
  color: var(--muted);
}

/* The lobby: a live-looking team, the page's one loud element. */

.lobby {
  margin: 0;
  padding: 22px;
  border-radius: 22px;
  background: var(--surface);
  border: 1px solid var(--line);
}

.lobby-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 14px;
}

.lobby-team {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 18px;
}

.live {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 600;
  color: var(--ok);
}

.live-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--ok);
  animation: pulse 2.4s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.35; }
}

.players {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.players li {
  display: grid;
  grid-template-columns: auto auto 1fr;
  grid-template-areas:
    "dot who tool"
    ".   doing doing";
  align-items: center;
  column-gap: 10px;
  padding: 12px 14px;
  border-radius: 14px;
  background: var(--sunk);
  border-left: 4px solid var(--pc);
}

.players .dot {
  grid-area: dot;
  width: 12px;
  height: 12px;
}

.players .who {
  grid-area: who;
  font-weight: 700;
  font-family: var(--font-display);
}

.players .tool {
  grid-area: tool;
  justify-self: start;
  font-size: 13px;
  color: var(--muted);
  padding: 1px 8px;
  border: 1px solid var(--line);
  border-radius: 999px;
}

.players .doing {
  grid-area: doing;
  font-size: 15px;
  color: var(--muted);
  transition: color 400ms ease;
}

.players .doing.changed {
  color: var(--ink);
}

.lobby-feed {
  list-style: none;
  margin: 18px 0 0;
  padding: 16px 0 0;
  border-top: 1px dashed var(--line);
  display: grid;
  gap: 10px;
  font-size: 15px;
  line-height: 1.4;
}

.lobby-feed li {
  display: flex;
  gap: 10px;
  align-items: baseline;
}

.lobby-feed .dot {
  width: 8px;
  height: 8px;
  transform: translateY(-1px);
}

.lobby-feed code {
  font-size: 13px;
  padding: 1px 5px;
  border-radius: 6px;
  background: var(--sunk);
  overflow-wrap: anywhere;
}

.revealing > li {
  opacity: 0;
  transform: translateY(6px);
  transition: opacity 360ms ease, transform 360ms ease;
}

.revealing > li.shown {
  opacity: 1;
  transform: none;
}

/* Steps: a real sequence, so it is numbered. */

.step-list {
  list-style: none;
  margin: 36px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 32px;
}

.step-list li {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.step-num {
  display: inline-grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--pc);
  color: #171a3a;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 21px;
}

.step-list p {
  color: var(--muted);
  font-size: 16px;
}

.step-list p code {
  color: var(--ink);
  overflow-wrap: anywhere;
}

.step-list .cmd code {
  font-size: 14px;
}

/* Talk to your agent */

.exchanges {
  list-style: none;
  margin: 36px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px 32px;
}

.exchanges li {
  display: grid;
  gap: 8px;
}

.you {
  display: flex;
  align-items: center;
  gap: 10px;
  justify-self: start;
  padding: 10px 16px;
  border-radius: 16px 16px 16px 4px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-left: 4px solid var(--pc);
  font-weight: 600;
}

.agent {
  margin-left: 24px;
  color: var(--muted);
  font-size: 16px;
}

.agent code {
  color: var(--ink);
  font-size: 14px;
}

/* How it works */

.diagram {
  width: 100%;
  max-width: 820px;
  margin-top: 36px;
  height: auto;
}

.wire {
  fill: none;
  stroke: var(--pc);
  stroke-width: 3;
  stroke-linecap: round;
}

.hub-box {
  fill: var(--ink);
}

.d-title {
  fill: var(--bg);
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 26px;
}

.hub-box + .d-title + .d-sub {
  fill: var(--bg);
  opacity: 0.75;
}

.machine {
  fill: var(--surface);
  stroke: var(--line);
  stroke-width: 1.5;
}

.m-dot {
  fill: var(--pc);
}

.d-name {
  fill: var(--ink);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 18px;
}

.d-sub {
  fill: var(--muted);
  font-family: var(--font-body);
  font-size: 15px;
}

.git-line {
  stroke: var(--muted);
  stroke-width: 2;
  stroke-dasharray: 6 8;
}

.how-notes {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 32px;
  margin-top: 32px;
}

.how-notes p {
  margin-top: 8px;
  color: var(--muted);
  font-size: 16px;
}

/* Self host */

.host {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 380px);
  gap: 32px;
  align-items: center;
}

.host p {
  margin-top: 10px;
  color: var(--muted);
  max-width: 52ch;
}

.host p code {
  color: var(--ink);
}

/* Footer */

.foot {
  padding-top: 32px;
  padding-bottom: 48px;
  border-top: 1px solid var(--line);
  font-size: 15px;
  color: var(--muted);
}

.foot p + p {
  margin-top: 6px;
}

.hub-url {
  font-family: var(--font-mono);
  font-size: 14px;
  overflow-wrap: anywhere;
}

/* Join page */

.site main.join-main {
  max-width: 760px;
  padding-top: 48px;
  padding-bottom: 96px;
}

.join-main h1 {
  font-size: 48px;
  line-height: 1.05;
  font-weight: 800;
  letter-spacing: -0.03em;
}

.join-team {
  display: flex;
  gap: 6px;
  margin-bottom: 24px;
}

.join-team .dot {
  width: 18px;
  height: 18px;
}

.join-main .lede {
  max-width: 46ch;
}

.join-main .cmd {
  margin-top: 28px;
}

.join-main .cmd code {
  font-size: 14px;
}

.join-what {
  margin-top: 28px;
  padding-left: 16px;
  border-left: 4px solid var(--p4);
  max-width: 58ch;
}

.join-main .fine {
  margin-top: 20px;
}

/* Responsive */

@media (max-width: 960px) {
  .hero {
    grid-template-columns: minmax(0, 1fr);
    gap: 40px;
  }

  .hero h1 {
    font-size: 56px;
  }

  .step-list,
  .how-notes {
    grid-template-columns: minmax(0, 1fr);
    gap: 28px;
  }

  .host {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (max-width: 720px) {
  .exchanges {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (max-width: 520px) {
  .site {
    font-size: 17px;
  }

  .top,
  .site main,
  .foot {
    padding-left: 16px;
    padding-right: 16px;
  }

  :where(.site main) > section {
    padding: 52px 0;
  }

  .hero {
    padding-top: 16px;
  }

  .hero h1 {
    font-size: 42px;
  }

  .lede {
    font-size: 18px;
  }

  :where(.site) h2 {
    font-size: 30px;
  }

  .lobby {
    padding: 16px;
  }

  .join-main h1 {
    font-size: 36px;
  }

  .cmd {
    flex-wrap: wrap;
  }

  .cmd .btn {
    margin-left: auto;
  }
}