/* Developers: a quiet workbench for physical AI. */
:root {
  --tabs-dur: 200ms;
  --tabs-ease: cubic-bezier(0.22, 1, 0.36, 1);
  --tabs-text-muted: rgba(15, 15, 15, 0.6);
  --tabs-text-active: #0f0f0f;
  --tabs-bar-bg: #eeeeee;
  --tabs-pill-bg: #ffffff;
}
/* The bar is just a flex container with padding for the pill
   to sit inside. Tabs sit on z-index: 1, the pill on z-index: 0,
   so labels read above the pill background. */
.t-tabs {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 3px;
  padding: 3px;
  border-radius: 48px;
  background: var(--tabs-bar-bg);
}
.t-tab {
  position: relative;
  appearance: none;
  border: 0;
  background: transparent;
  height: 30px;
  padding: 4px 12px;
  color: var(--tabs-text-muted);
  cursor: pointer;
  border-radius: 48px;
  z-index: 1;
  transition: color var(--tabs-dur) var(--tabs-ease);
}
.t-tab:not([aria-selected="true"]):hover,
.t-tab[aria-selected="true"] {
  color: var(--tabs-text-active);
}

/* The pill: width + transform are written inline by JS so
   the transition tweens between the previous and next
   measured positions. */
.t-tabs-pill {
  position: absolute;
  top: 3px;
  left: 0;
  height: 30px;
  width: 0;
  background: var(--tabs-pill-bg);
  border-radius: 48px;
  transform: translateX(0);
  transition:
    transform var(--tabs-dur) var(--tabs-ease),
    width     var(--tabs-dur) var(--tabs-ease);
  will-change: transform, width;
  z-index: 0;
  pointer-events: none;
}

@media (prefers-reduced-motion: reduce) {
  .t-tabs-pill, .t-tab { transition: none !important; }
}
.dev-hero { padding-top: clamp(180px, 17.5vw, 270px); }
.dev-hero-grid { display: grid; grid-template-columns: .92fr 1.08fr; align-items: center; gap: clamp(32px, 4vw, 64px); padding-bottom: 112px; }
.dev-intro { min-width: 0; padding-bottom: 18px; }
.dev-intro h1 { font-size: clamp(64px, 8.7vw, 136px); font-weight: 600; line-height: .99; letter-spacing: -.065em; }
.dev-intro > p { max-width: 600px; margin-top: 38px; font-size: clamp(19px, 1.65vw, 25px); line-height: 1.45; letter-spacing: -.022em; color: var(--muted); }
.dev-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 22px 32px; }
.dev-intro .dev-actions { margin-top: 42px; }
.dev-github { display: inline-flex; align-items: center; justify-content: center; gap: 11px; min-height: 48px; font-size: 15px; font-weight: 500; border-radius: 4px; white-space: nowrap; }
.dev-github:hover { color: #737379; }
.dev-github > .icon { width: 17px; height: 17px; }
.github-icon { width: 23px; height: 23px; fill: currentColor; flex: 0 0 auto; }
.dev-workbench { min-width: 0; width: 95%; max-width: 648px; justify-self: end; scroll-margin-top: 115px; }
.dev-terminal { --tabs-text-muted: #a5abb0; --tabs-text-active: #fff; position: relative; isolation: isolate; overflow: hidden; border: 1px solid #323437; border-radius: 18px; color: #eff0f1; background: linear-gradient(135deg, #1c1d1e, #101112 68%); box-shadow: 0 22px 38px -25px #00000080, 0 3px 9px #0000000b, inset 0 1px 0 #ffffff0d; }
.dev-terminal::before { position: absolute; inset: 0; z-index: 2; border-radius: inherit; background: radial-gradient(330px circle at var(--light-x, 50%) var(--light-y, 30%), #ffffff0d, transparent 72%); opacity: 0; pointer-events: none; content: ''; transition: opacity 280ms ease; }
.dev-terminal.is-lit::before { opacity: 1; }
.terminal-toolbar { display: flex; align-items: center; justify-content: space-between; min-height: 52px; gap: 16px; padding-inline: 22px; border-bottom: 1px solid #303234; }
.terminal-path { display: flex; align-items: center; gap: 14px; font: 14px/1.5 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
.terminal-path .icon { width: 22px; height: 22px; }
.terminal-copy { display: inline-flex; align-items: center; gap: 8px; min-height: 44px; padding: 8px 0 8px 8px; border: 0; border-radius: 5px; background: none; color: #b9bec4; font-size: 13px; line-height: 1.4; }
.terminal-copy:hover { color: white; }
.terminal-copy[data-copied="true"] { color: #a4e8bc; }
.terminal-copy .icon { width: 17px; height: 17px; }
.terminal-copy:disabled { cursor: wait; }
.terminal-tabs { display: flex; gap: 25px; padding: 0 22px; border-radius: 0; background: transparent; border-bottom: 1px solid #303234; }
.terminal-tabs button { position: relative; min-height: 44px; padding: 10px 0; border: 0; border-radius: 0; color: #a5abb0; background: none; font-size: 13px; font-weight: 400; white-space: nowrap; transition: color var(--tabs-dur) var(--tabs-ease); }
.terminal-tabs button::after { position: absolute; bottom: 0; right: 0; left: 0; height: 2px; border-radius: 2px 2px 0 0; background: currentColor; content: ''; opacity: 0; }
.terminal-tabs button[aria-selected="true"] { color: #fff; }
.terminal-tabs button[aria-selected="true"]::after { opacity: 1; }
.terminal-tabs button:hover { color: #fff; }
.terminal-tabs .t-tabs-pill { display: none; top: auto; bottom: 0; height: 2px; border-radius: 2px 2px 0 0; }
.terminal-tabs.has-indicator .t-tabs-pill { display: block; }
.terminal-tabs.has-indicator button::after { display: none; }
.dev-terminal :focus-visible { outline: 2px solid #dfe5e9; outline-offset: -3px; border-radius: 4px; }
.terminal-panel { min-height: 252px; padding: 24px 22px; overflow-x: auto; scrollbar-width: thin; scrollbar-color: #555a5d #17181a; }
.terminal-panel pre, .terminal-prompt { margin: 0; font: clamp(12px, 1.05vw, 15px)/1.85 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; tab-size: 2; white-space: pre; }
.terminal-panel code { font: inherit; }
.terminal-panel code > span { display: inline-block; vertical-align: bottom; }
.code-comment { color: #a3abae; font-style: italic; }
.code-command::before { content: '$ '; color: #91e6b0; }
.code-continuation::before { content: '  '; }
.terminal-prompt { display: flex; align-items: center; gap: 1ch; margin-top: 6px; color: #91e6b0; }
.terminal-caret { display: block; width: 7px; height: 1.05em; background: #c7e7d1; opacity: .8; }
.terminal-footer { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 12px; min-height: 41px; padding: 4px 22px; border-top: 1px solid #303234; color: #a3abae; font: 11px/1.5 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
.terminal-shell { grid-column: 3; text-align: right; }
.terminal-footer > span { white-space: nowrap; }
.terminal-rotation { display: inline-flex; align-items: center; justify-content: center; gap: 6px; min-width: 65px; min-height: 32px; padding: 4px; border: 0; border-radius: 4px; background: transparent; color: #aeb5b8; font: inherit; cursor: pointer; transition: color 160ms ease; }
.terminal-rotation:hover { color: white; }
.terminal-rotation .icon { width: 12px; height: 12px; }
.terminal-caption { margin-top: 16px; color: var(--muted); font-size: 13px; line-height: 1.55; }
.dev-rail { display: grid; grid-template-columns: repeat(3, 1fr) auto; gap: 22px; padding: 30px 0; border-top: 1px solid var(--line); color: #606168; font-size: 10px; line-height: 1.5; letter-spacing: .14em; text-transform: uppercase; }
.dev-rail .icon { color: var(--ink); width: 20px; height: 20px; }
.dev-kits { padding-top: 92px; padding-bottom: 110px; }
.dev-kits #kits { scroll-margin-top: 24px; }
.dev-section-label { margin-bottom: 24px; font-size: 11px; line-height: 1.5; letter-spacing: .12em; text-transform: uppercase; font-weight: 500; }
.dev-kits-intro { display: grid; grid-template-columns: 1.45fr 1fr; align-items: center; gap: 64px; }
.dev-kits h2 { font-size: clamp(43px, 4.5vw, 74px); font-weight: 500; line-height: 1.04; letter-spacing: -.055em; }
.dev-kits-intro > p { color: var(--muted); font-size: clamp(18px, 1.5vw, 23px); line-height: 1.5; letter-spacing: -.015em; }
.dev-kit-figure { margin: 36px -15px 44px; }
.dev-kit-art { padding-block: 10px; }
.dev-kit-art img { width: 100%; height: auto; object-fit: contain; }
.dev-kit-figure figcaption { padding-right: 15px; color: var(--muted); font-size: 11px; line-height: 1.5; text-align: right; }
.dev-kit-columns, .dev-open-columns { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); }
.dev-kit-columns > div, .dev-open-columns > div { padding-inline: 36px; }
.dev-kit-columns > div:first-child, .dev-open-columns > div:first-child { padding-left: 0; }
.dev-kit-columns > div:last-child, .dev-open-columns > div:last-child { padding-right: 0; }
.dev-kit-columns > div + div { border-left: 1px solid var(--line); }
.dev-kit-columns h3 { margin-bottom: 15px; font-size: clamp(24px, 2vw, 31px); font-weight: 500; line-height: 1.15; letter-spacing: -.04em; }
.dev-kit-columns p { max-width: 390px; color: var(--muted); font-size: 17px; line-height: 1.6; letter-spacing: -.015em; }
.dev-ecosystem { padding-bottom: 32px; }
.dev-open-panel { padding: clamp(44px, 5vw, 80px); border-radius: 28px; color: #fff; background: #111112; }
.dev-open-intro { display: grid; grid-template-columns: 1.1fr 1fr; align-items: center; gap: 64px; }
.dev-open-intro h2 { font-size: clamp(44px, 4.7vw, 78px); font-weight: 500; line-height: 1.07; letter-spacing: -.052em; }
.dev-open-intro h2 span { color: #a7a7ab; }
.dev-open-intro > p { max-width: 600px; color: #c0c0c4; font-size: clamp(18px, 1.55vw, 24px); line-height: 1.5; letter-spacing: -.015em; }
.dev-open-columns { margin-top: 80px; }
.dev-open-columns > div + div { border-left: 1px solid #3e3e40; }
.dev-open-columns h3 { font-size: clamp(20px, 1.8vw, 28px); font-weight: 500; line-height: 1.25; letter-spacing: -.035em; }
.dev-open-columns p { margin-top: 18px; color: #b7b7bc; font-size: 18px; line-height: 1.6; letter-spacing: -.012em; }
.dev-invitation { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 32px; padding-top: 50px; margin-top: 62px; border-top: 1px solid #3e3e40; }
.dev-invitation > h3 { font-size: clamp(34px, 3.2vw, 52px); font-weight: 500; letter-spacing: -.045em; line-height: 1.1; }
.dev-invitation .dev-actions { gap: 26px; }
.dev-invitation .dev-github { color: white; }
.dev-invitation .dev-github:hover { color: #b7b7bc; }

@media (min-width: 1750px) {
  .dev-hero { padding-top: 250px; }
}
@media (max-width: 1100px) {
  .dev-hero { padding-top: 170px; }
  .dev-hero-grid { gap: 30px; padding-bottom: 86px; }
  .dev-intro h1 { font-size: clamp(58px, 7.5vw, 80px); }
  .dev-intro > p { font-size: 19px; margin-top: 28px; }
  .dev-intro .dev-actions { gap: 14px 22px; margin-top: 30px; }
  .dev-intro .button { padding-inline: 18px; gap: 14px; font-size: 13px; }
  .dev-github { font-size: 13px; gap: 8px; }
  .terminal-toolbar, .terminal-tabs { padding-inline: 20px; }
  .terminal-panel { padding: 22px 20px; min-height: 238px; }
  .terminal-tabs { gap: 20px; }
  .terminal-tabs button { font-size: 12px; }
  .dev-kits-intro { gap: 34px; grid-template-columns: 1.25fr 1fr; }
  .dev-kit-columns > div, .dev-open-columns > div { padding-inline: 24px; }
  .dev-kit-columns p { font-size: 16px; }
  .dev-open-intro { gap: 32px; }
  .dev-open-columns { margin-top: 60px; }
  .dev-open-columns p { font-size: 16px; }
}
@media (max-width: 800px) {
  .dev-hero { padding-top: 152px; }
  .dev-hero-grid { grid-template-columns: 1fr; gap: 45px; padding-bottom: 50px; }
  .dev-intro { padding: 0; }
  .dev-intro h1 { font-size: clamp(64px, 11vw, 90px); }
  .dev-intro > p { max-width: 520px; font-size: 21px; }
  .dev-workbench { width: 100%; max-width: 100%; }
  .terminal-panel { min-height: 238px; }
  .terminal-panel pre, .terminal-prompt { font-size: 14px; line-height: 1.85; }
  .terminal-tabs button { font-size: 14px; }
  .dev-kits-intro, .dev-open-intro { grid-template-columns: 1fr; gap: 28px; }
  .dev-kits h2, .dev-open-intro h2 { font-size: clamp(42px, 7.5vw, 67px); }
  .dev-kits-intro > p, .dev-open-intro > p { max-width: 570px; font-size: 19px; }
  .dev-kit-columns, .dev-open-columns { grid-template-columns: 1fr; }
  .dev-kit-columns > div, .dev-open-columns > div { padding: 25px 0; }
  .dev-kit-columns > div:first-child, .dev-open-columns > div:first-child { padding-top: 0; }
  .dev-kit-columns > div:last-child, .dev-open-columns > div:last-child { padding-bottom: 0; }
  .dev-kit-columns > div + div, .dev-open-columns > div + div { border-left: 0; border-top: 1px solid var(--line); }
  .dev-open-columns > div + div { border-color: #3e3e40; }
  .dev-kit-columns h3, .dev-open-columns h3 { font-size: 25px; }
  .dev-kit-columns p, .dev-open-columns p { max-width: 540px; font-size: 17px; margin-top: 12px; }
  .dev-kits { padding-top: 60px; padding-bottom: 72px; }
  .dev-kit-figure { margin: 22px -20px 30px; }
  .dev-open-panel { padding: 42px; }
  .dev-open-columns { margin-top: 42px; }
  .dev-invitation { margin-top: 38px; padding-top: 32px; }
}
@media (max-width: 480px) {
  .dev-hero { padding-top: 140px; }
  .dev-intro h1 { font-size: clamp(54px, 14vw, 67px); }
  .dev-intro > p { margin-top: 25px; font-size: 18px; }
  .dev-intro .dev-actions { margin-top: 28px; gap: 14px 20px; }
  .dev-intro .button { min-height: 46px; font-size: 12px; padding-inline: 15px; gap: 10px; }
  .dev-github { font-size: 12px; gap: 8px; }
  .github-icon { width: 20px; height: 20px; }
  .dev-hero-grid { gap: 40px; }
  .dev-terminal { border-radius: 14px; }
  .terminal-toolbar { min-height: 50px; padding-inline: 17px; }
  .terminal-path { gap: 10px; font-size: 12px; }
  .terminal-copy { font-size: 12px; }
  .terminal-tabs { gap: 22px; padding-inline: 17px; }
  .terminal-tabs button { font-size: 12px; min-height: 44px; }
  .terminal-panel { min-height: 224px; padding: 20px 17px; }
  .terminal-panel pre, .terminal-prompt { font-size: 12px; line-height: 1.85; }
  .terminal-footer { padding: 4px 17px; font-size: 10px; }
  .terminal-caption { font-size: 12px; margin-top: 13px; }
  .dev-rail { font-size: 8px; letter-spacing: .07em; gap: 12px; padding-block: 24px; }
  .dev-rail .icon { width: 17px; height: 17px; }
  .dev-kits h2 { font-size: clamp(35px, 8.8vw, 43px); }
  .dev-section-label { font-size: 10px; margin-bottom: 20px; }
  .dev-kits-intro { gap: 24px; }
  .dev-kits-intro > p { font-size: 17px; }
  .dev-kit-figure { margin: 26px -24px 28px; }
  .dev-kit-figure figcaption { padding-right: 24px; font-size: 10px; }
  .dev-open-panel { padding: 32px 24px; border-radius: 22px; }
  .dev-open-intro { gap: 24px; }
  .dev-open-intro h2 { font-size: clamp(33px, 8.5vw, 41px); }
  .dev-open-intro > p, .dev-open-columns p { font-size: 16px; }
  .dev-open-columns h3 { font-size: 23px; }
  .dev-invitation > h3 { font-size: 32px; }
  .dev-invitation .button { min-height: 46px; padding: 13px 17px; gap: 12px; font-size: 12px; }
  .dev-invitation .dev-actions { gap: 15px; }
  .dev-ecosystem { padding-bottom: 0; }
}

/* Motion enhances real, selectable commands. It never changes their text. */
@media (prefers-reduced-motion: no-preference) {
  .terminal-panel.is-revealing code > span { animation: terminal-line-in 200ms cubic-bezier(.22, 1, .36, 1) var(--line-delay) backwards; }
  .terminal-panel.is-revealing .terminal-prompt { animation: terminal-prompt-in 140ms ease var(--prompt-delay) both; }
  .terminal-panel.is-revealing .terminal-caret { animation: terminal-caret-blink 1s step-end var(--prompt-delay) 3; }
}
@keyframes terminal-line-in { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: translateY(0); } }
@keyframes terminal-prompt-in { from { opacity: 0; } to { opacity: 1; } }
@keyframes terminal-caret-blink { 0%, 100% { opacity: .8; } 50% { opacity: 0; } }