/* mingle.build. Colors, type and radii are the console's (DESIGN.md), scaled up for a page you read. */

:root {
  --bg: #ffffff;
  --bg2: #f7f7f8;
  --bg3: #efeff2;
  --line: #ebebef;
  --line2: #d9d9e0;
  --ink: #1d1d22;
  --ink2: #5b5b64;
  --ink3: #8a8a93;
  --accent: #5450d6;
  --accent-btn: #5450d6;
  --accent-tint: #f1f0fd;
  --green: #2f9e5a;
  --card: #ffffff;
  --code: #1d1d22;
  --code-ink: #ededf2;
  --shadow: 0 1px 2px rgb(0 0 0 / 0.04), 0 12px 40px -12px rgb(30 30 60 / 0.18);
  --sans:
    -apple-system, BlinkMacSystemFont, "SF Pro Text", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei",
    "Helvetica Neue", "Segoe UI", sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --ease: cubic-bezier(0.2, 0, 0, 1);
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1c1c1f;
    --bg2: #212125;
    --bg3: #2b2b30;
    --line: #2e2e34;
    --line2: #404047;
    --ink: #ededf2;
    --ink2: #b3b3bc;
    --ink3: #85858f;
    --accent: #9895ff;
    --accent-btn: #5b57e0;
    --accent-tint: #262549;
    --green: #4cc38a;
    --card: #29292e;
    --code: #141417;
    --shadow: 0 1px 2px rgb(0 0 0 / 0.3), 0 16px 48px -12px rgb(0 0 0 / 0.6);
    color-scheme: dark;
  }
}

* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  scroll-padding-top: 72px;
  -webkit-text-size-adjust: 100%;
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 16px / 1.6 var(--sans);
  -webkit-font-smoothing: antialiased;
}
a {
  color: var(--accent);
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 6px;
}
img {
  max-width: 100%;
  display: block;
}
code {
  font-family: var(--mono);
  font-size: 0.9em;
}
p code,
.lead code,
.for-agents code {
  background: var(--bg3);
  padding: 1px 6px;
  border-radius: 6px;
}
ul,
ol {
  list-style: none;
  margin: 0;
  padding: 0;
}
h1,
h2,
h3 {
  margin: 0;
  letter-spacing: -0.01em;
}
.wrap {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Nav */
.nav {
  position: sticky;
  top: 0;
  z-index: 10;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: saturate(180%) blur(16px);
  -webkit-backdrop-filter: saturate(180%) blur(16px);
  border-bottom: 1px solid var(--line);
}
.nav-inner {
  display: flex;
  align-items: center;
  gap: 24px;
  height: 60px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 650;
  font-size: 17px;
  color: var(--ink);
}
.brand img {
  border-radius: 7px;
}
.brand:hover {
  text-decoration: none;
}
.nav-links {
  display: flex;
  gap: 20px;
  font-size: 14px;
}
.nav-links a,
.langs a {
  color: var(--ink2);
}
.nav-links a:hover,
.langs a:hover {
  color: var(--ink);
  text-decoration: none;
}
.nav-end {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 16px;
}
.langs {
  display: flex;
  gap: 2px;
  background: var(--bg3);
  border-radius: 8px;
  padding: 2px;
  font-size: 13px;
}
.langs a {
  padding: 3px 10px;
  border-radius: 6px;
}
.langs a[aria-current] {
  background: var(--card);
  color: var(--ink);
  box-shadow: 0 1px 2px rgb(0 0 0 / 0.08);
}
.icon-link {
  color: var(--ink2);
  display: flex;
}
.icon-link:hover {
  color: var(--ink);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 44px;
  padding: 0 20px;
  border-radius: 10px;
  border: 1px solid var(--line2);
  background: var(--card);
  color: var(--ink);
  font-weight: 550;
  font-size: 15px;
  transition:
    transform 120ms var(--ease),
    background 120ms var(--ease);
}
.btn:hover {
  text-decoration: none;
  background: var(--bg3);
}
.btn:active {
  transform: translateY(1px);
}
.btn-primary {
  background: var(--accent-btn);
  border-color: transparent;
  color: #fff;
}
.btn-primary:hover {
  background: color-mix(in srgb, var(--accent-btn) 88%, #000);
}
.btn-small {
  height: 32px;
  padding: 0 14px;
  font-size: 14px;
  border-radius: 8px;
}

/* Hero */
.hero {
  padding: 88px 0 40px;
  text-align: center;
  overflow: hidden;
}
.eyebrow {
  margin: 0 0 12px;
  color: var(--accent);
  font-weight: 600;
  font-size: 14px;
}
h1 {
  font-size: clamp(36px, 6vw, 64px);
  line-height: 1.08;
  font-weight: 750;
  letter-spacing: -0.025em;
}
:lang(zh-CN) h1 {
  letter-spacing: 0;
  line-height: 1.18;
}
.lead {
  color: var(--ink2);
  font-size: 18px;
  max-width: 720px;
  margin: 20px 0 0;
}
.hero .lead {
  margin: 24px auto 0;
  font-size: 19px;
}
.cta {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 32px;
}
.meta {
  color: var(--ink3);
  font-size: 13px;
  margin: 16px 0 0;
}
.hero-stage {
  position: relative;
  margin: 56px auto 0;
  max-width: 1040px;
  text-align: left;
}
.chat-float {
  position: absolute;
  right: -28px;
  bottom: -28px;
  width: 340px;
}

/* A window around a screenshot */
.window {
  margin: 0;
  border-radius: 14px;
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--bg2);
  box-shadow: var(--shadow);
}
.window-bar {
  display: flex;
  gap: 7px;
  padding: 11px 14px;
  background: var(--bg2);
  border-bottom: 1px solid var(--line);
}
.window-bar i {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--line2);
}
.window-bar i:nth-child(1) {
  background: #ff5f57;
}
.window-bar i:nth-child(2) {
  background: #febc2e;
}
.window-bar i:nth-child(3) {
  background: #28c840;
}
.window img {
  width: 100%;
  height: auto;
}

/* The chat that plays itself */
.chat {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  box-shadow: var(--shadow);
  overflow: hidden;
  font-size: 14px;
  line-height: 1.5;
}
.chat-head {
  display: flex;
  gap: 10px;
  align-items: center;
  padding: 12px 14px;
  border-bottom: 1px solid var(--line);
}
.chat-head b {
  display: block;
  font-size: 14px;
}
.chat-head small {
  color: var(--ink3);
  font-size: 12px;
}
.chat-body {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 14px;
  min-height: 330px;
  background: var(--bg2);
}
.msg {
  position: relative;
  max-width: 86%;
  padding: 8px 12px;
  border-radius: 14px;
  background: var(--card);
  border: 1px solid var(--line);
  transform: translateY(8px);
  opacity: 0;
  transition:
    transform 180ms var(--ease),
    opacity 180ms var(--ease);
}
.msg.shown,
.static .msg,
html:not(.js) .msg {
  transform: none;
  opacity: 1;
}
.msg p {
  margin: 0;
}
.msg .who {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: var(--ink3);
}
.msg.out {
  align-self: flex-end;
  background: var(--accent-tint);
  border-color: transparent;
}
.msg.out .who {
  color: var(--accent);
}
.react {
  position: absolute;
  right: -8px;
  bottom: -10px;
  font-size: 13px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0 5px;
  transform: scale(0);
  transition: transform 180ms var(--ease);
}
.react.shown {
  transform: scale(1);
}
.typing {
  color: var(--ink3);
}
.typing[hidden] {
  display: none;
}
.dots {
  display: inline-flex;
  gap: 3px;
  margin-right: 4px;
  vertical-align: middle;
}
.dots i {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--ink3);
  animation: blink 1s infinite;
}
.dots i:nth-child(2) {
  animation-delay: 0.15s;
}
.dots i:nth-child(3) {
  animation-delay: 0.3s;
}
@keyframes blink {
  0%,
  80%,
  100% {
    transform: translateY(0);
    opacity: 0.4;
  }
  40% {
    transform: translateY(-3px);
    opacity: 1;
  }
}

/* Chat apps */
.apps {
  padding: 72px 0 24px;
  text-align: center;
}
.apps-title {
  margin: 0 0 24px;
  color: var(--ink2);
  font-weight: 600;
}
.apps-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 28px 36px;
}
.apps-row li {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--ink2);
  transition: transform 180ms var(--ease);
}
.apps-row li:hover {
  transform: translateY(-3px);
}
.app-icon {
  display: inline-flex;
  flex-shrink: 0;
  align-items: center;
  justify-content: center;
  width: var(--size);
  height: var(--size);
  border-radius: calc(var(--size) * 0.26);
  color: #fff;
}

/* Sections */
.section {
  padding: 112px 0;
}
.tint {
  background: var(--bg2);
}
h2 {
  font-size: clamp(28px, 4vw, 44px);
  line-height: 1.15;
  font-weight: 720;
  letter-spacing: -0.02em;
  max-width: 820px;
}
:lang(zh-CN) h2 {
  letter-spacing: 0;
  line-height: 1.25;
}
h3 {
  font-size: 17px;
  font-weight: 650;
}
.section .window {
  margin-top: 48px;
}
.note {
  color: var(--ink3);
  font-size: 14px;
  margin: 28px 0 0;
}

/* How it works */
.steps {
  display: flex;
  flex-direction: column;
  gap: 88px;
  margin-top: 64px;
}
.step {
  display: grid;
  grid-template-columns: 1fr 1.8fr;
  gap: 56px;
  align-items: center;
}
.step:nth-child(even) .step-text {
  order: 2;
}
.step .window {
  margin: 0;
}
.step:nth-child(even) {
  grid-template-columns: 1.8fr 1fr;
}
.step > * {
  min-width: 0;
}
.step .chat {
  max-width: 440px;
  justify-self: center;
  width: 100%;
}
.step-text p {
  color: var(--ink2);
  margin: 10px 0 0;
}
.step-text h3 {
  font-size: 22px;
}
.num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  margin-bottom: 14px;
  border-radius: 50%;
  border: 2px solid var(--accent);
  color: var(--accent);
  font-weight: 650;
}

/* Cards */
.grid {
  display: grid;
  gap: 16px;
  margin-top: 48px;
}
.grid-2 {
  grid-template-columns: repeat(2, 1fr);
}
.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}
.grid-4 {
  grid-template-columns: repeat(4, 1fr);
  margin-top: 32px;
}
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 22px;
  transition:
    transform 180ms var(--ease),
    border-color 180ms var(--ease);
}
.card:hover {
  transform: translateY(-2px);
  border-color: var(--line2);
}
.card p {
  margin: 6px 0 0;
  color: var(--ink2);
  font-size: 15px;
}
.tint .card {
  background: var(--bg);
}
@media (prefers-color-scheme: dark) {
  .tint .card {
    background: var(--card);
  }
}

/* The same memory in two apps */
.memory {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 20px;
  align-items: center;
  margin-top: 48px;
}
.memory .chat-body {
  min-height: 0;
}
.memory-link {
  justify-self: center;
  font-size: 24px;
  color: var(--accent);
}

/* Brains */
.brains {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 40px;
}
.brains li {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px 10px 12px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--card);
  font-weight: 550;
}
.brain-icon {
  width: 24px;
  height: 24px;
  display: flex;
}
.brain-icon img {
  width: 24px;
  height: 24px;
}
.brain-icon .on-dark {
  display: none;
}
@media (prefers-color-scheme: dark) {
  .brain-icon .on-light {
    display: none;
  }
  .brain-icon .on-dark {
    display: block;
  }
}

/* CLI */
.cli-grid > * {
  min-width: 0;
}
.cli-grid {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 24px;
  margin-top: 48px;
  align-items: start;
}
.code + .code {
  margin-top: 16px;
}
.code-label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  color: var(--ink3);
  margin-bottom: 6px;
}
.code-body {
  position: relative;
  background: var(--code);
  color: var(--code-ink);
  border-radius: 12px;
}
.code pre {
  margin: 0;
  padding: 14px 16px;
  overflow-x: auto;
  font-size: 13.5px;
  line-height: 1.6;
}
.copy {
  border: 1px solid var(--line2);
  background: var(--card);
  color: var(--ink2);
  border-radius: 7px;
  padding: 2px 10px;
  font: 500 12px var(--sans);
  cursor: pointer;
}
.copy:hover {
  color: var(--ink);
  background: var(--bg3);
}
.terminal {
  background: var(--code);
  color: var(--code-ink);
  border-radius: 14px;
  overflow: hidden;
  box-shadow: var(--shadow);
}
.terminal .window-bar {
  background: rgb(255 255 255 / 0.04);
  border-color: rgb(255 255 255 / 0.08);
}
.terminal pre {
  margin: 0;
  padding: 18px 20px 22px;
  font-size: 13.5px;
  line-height: 1.65;
  white-space: pre-wrap;
  word-break: break-word;
}
.prompt {
  color: #9895ff;
  user-select: none;
}
.comment {
  color: #85858f;
}
.for-agents {
  margin-top: 32px;
  padding: 16px 20px;
  border-radius: 12px;
  background: var(--accent-tint);
  color: var(--ink2);
}
.for-agents b {
  color: var(--ink);
}

/* Download */
.end {
  text-align: center;
}
.end h2,
.end .lead {
  margin-left: auto;
  margin-right: auto;
}
.end-icon {
  margin: 0 auto 24px;
  border-radius: 15px;
}
.dls {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  max-width: 880px;
  margin: 40px auto 0;
}
.dl {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
  align-content: flex-start;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--card);
}
.dl b {
  width: 100%;
  margin-bottom: 4px;
}
.dl a {
  padding: 5px 12px;
  border: 1px solid var(--line2);
  border-radius: 8px;
  font-size: 14px;
  color: var(--ink);
}
.dl a:hover {
  background: var(--bg3);
  text-decoration: none;
}
.end .note {
  max-width: 720px;
  margin: 28px auto 0;
}

/* Footer */
.footer {
  border-top: 1px solid var(--line);
  padding: 32px 0 48px;
  font-size: 13px;
  color: var(--ink3);
}
.footer-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 24px;
  justify-content: space-between;
}
.footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
}
.footer nav a {
  color: var(--ink2);
}
.disclaimer {
  width: 100%;
  margin: 0;
}

/* Motion: rise on load, reveal on scroll. */
.js .rise {
  animation: rise 600ms var(--ease) both;
}
.js .rise:nth-child(2) {
  animation-delay: 60ms;
}
.js .rise:nth-child(3) {
  animation-delay: 120ms;
}
.js .rise:nth-child(4) {
  animation-delay: 180ms;
}
.js .rise:nth-child(5) {
  animation-delay: 240ms;
}
.js .rise:nth-child(6) {
  animation-delay: 320ms;
}
@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
}
.js .reveal {
  opacity: 0;
  transform: translateY(24px);
  transition:
    opacity 600ms var(--ease),
    transform 600ms var(--ease);
}
.js .reveal.in {
  opacity: 1;
  transform: none;
}
.grid .reveal:nth-child(2) {
  transition-delay: 60ms;
}
.grid .reveal:nth-child(3) {
  transition-delay: 120ms;
}
.grid .reveal:nth-child(4) {
  transition-delay: 180ms;
}
.grid .reveal:nth-child(5) {
  transition-delay: 240ms;
}
.grid .reveal:nth-child(6) {
  transition-delay: 300ms;
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    /* biome-ignore lint/complexity/noImportantStyles: reduced motion must win over every animation */
    animation: none !important;
    /* biome-ignore lint/complexity/noImportantStyles: as above */
    transition: none !important;
  }
  .js .reveal {
    opacity: 1;
    transform: none;
  }
}

/* Narrow screens */
@media (max-width: 960px) {
  .nav-links {
    display: none;
  }
  .chat-float {
    position: relative;
    right: auto;
    bottom: auto;
    width: auto;
    max-width: 420px;
    margin: -40px auto 0;
  }
  .step {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .step:nth-child(even) .step-text {
    order: 0;
  }
  .step:nth-child(even) {
    grid-template-columns: 1fr;
  }
  .memory {
    grid-template-columns: 1fr;
  }
  .memory-link {
    transform: rotate(90deg);
  }
  .grid-3,
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
  .cli-grid,
  .dls {
    grid-template-columns: 1fr;
  }
}
@media (max-width: 600px) {
  .wrap {
    padding: 0 18px;
  }
  .hero {
    padding-top: 56px;
  }
  .hero .lead {
    font-size: 17px;
  }
  .section {
    padding: 80px 0;
  }
  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }
  .nav-end .icon-link {
    display: none;
  }
  .chat-float {
    margin-top: 16px;
  }
}