/* Happy Herdr — the colors of the app's 蓝图 themes: 蓝图 by day, 蓝图·夜 by night. */

:root {
  --bg: #f4f7fc;
  --bg-deep: #e9eef7;
  --surface: #ffffff;
  --border: #d5deeb;
  --grid: rgba(47, 91, 224, 0.07);
  --text: #0f1a2e;
  --muted: #4a5872;
  --accent: #2f5be0;
  --button: #2f5be0;
  --button-hover: #2449c4;
  --work: #2f5be0;
  --wait: #d4561c;
  --done: #11896a;
  --shadow: 0 1px 2px rgba(15, 26, 46, 0.06), 0 24px 60px -24px rgba(15, 26, 46, 0.28);
  --display: "Bricolage Grotesque", -apple-system, "PingFang SC", "Hiragino Sans GB", sans-serif;
  --body: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Segoe UI", sans-serif;
  --mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0d1320;
    --bg-deep: #0a0f1a;
    --surface: #1b2538;
    --border: rgba(132, 148, 173, 0.24);
    --grid: rgba(120, 150, 200, 0.07);
    --text: #e6edf7;
    --muted: #9aa8bf;
    --accent: #7d9cff;
    --button: #4169f0;
    --button-hover: #5577f5;
    --work: #5b82ff;
    --wait: #ff7a45;
    --done: #2fc79d;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 30px 80px -30px rgba(0, 0, 0, 0.7);
  }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.6 var(--body);
  overflow-x: hidden;
}

img { display: block; max-width: 100%; height: auto; }

a { color: var(--accent); text-underline-offset: 3px; }
a:hover { text-decoration-thickness: 2px; }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }

.wrap { width: min(1120px, 100% - 32px); margin: 0 auto; }

/* header */

.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  padding: 20px 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  text-decoration: none;
  font: 700 20px/1 var(--display);
  letter-spacing: -0.01em;
}

.brand img { width: 34px; height: 34px; }

.nav { display: flex; align-items: center; gap: 4px 20px; flex-wrap: wrap; font-size: 15px; }
.nav a { color: var(--muted); text-decoration: none; }
.nav a:hover { color: var(--text); }
.nav .lang {
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 4px 12px;
}

/* hero */

.hero {
  position: relative;
  padding: 56px 0 0;
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 32px 32px;
  background-position: center top;
}

.hero::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 40%;
  background: linear-gradient(transparent, var(--bg));
  pointer-events: none;
}

.hero .wrap { position: relative; z-index: 1; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 20px;
  font: 500 13px/1 var(--mono);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
}

.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--work); flex: none; }
.dot.wait { background: var(--wait); }
.dot.done { background: var(--done); }

h1, h2, h3 { font-family: var(--display); letter-spacing: -0.02em; text-wrap: balance; }

h1 {
  margin: 0;
  max-width: 14ch;
  font-size: clamp(42px, 7vw, 76px);
  line-height: 1.02;
  font-weight: 750;
}

/* Chinese lines are broken by hand, and Chinese has no capitals */
:lang(zh) h1 { max-width: none; }
:lang(zh) .eyebrow, :lang(zh) .kicker, :lang(zh) .track b, :lang(zh) .needs b { text-transform: none; }

.lede {
  max-width: 40em;
  margin: 24px 0 0;
  font-size: clamp(17px, 2.1vw, 20px);
  color: var(--muted);
  text-wrap: pretty;
}

.lede strong { color: var(--text); font-weight: 600; }

.cta { display: flex; align-items: center; gap: 12px 24px; flex-wrap: wrap; margin: 32px 0 0; }

.button {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-height: 48px;
  padding: 12px 22px;
  border-radius: 12px;
  background: var(--button);
  color: #fff;
  font: 600 16px/1.2 var(--body);
  text-decoration: none;
  box-shadow: 0 8px 24px -10px var(--button);
}

.button:hover { background: var(--button-hover); text-decoration: none; }
.button svg { width: 18px; height: 18px; flex: none; }

.meta { margin: 0; font: 13px/1.5 var(--mono); color: var(--muted); }

.shot {
  margin: 0;
  border: 1px solid var(--border);
  border-radius: 14px;
  overflow: hidden;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.hero .shot { margin-top: 56px; }

/* sections */

section { padding: 96px 0 0; }

.kicker { margin: 0 0 12px; font: 500 13px/1 var(--mono); letter-spacing: 0.04em; text-transform: uppercase; color: var(--accent); }

h2 { margin: 0; font-size: clamp(30px, 4.4vw, 44px); line-height: 1.1; font-weight: 700; max-width: 22ch; }

h3 { margin: 0 0 8px; font-size: 21px; line-height: 1.25; font-weight: 650; }

.section-lede { max-width: 38em; margin: 16px 0 0; color: var(--muted); text-wrap: pretty; }

p { margin: 0; text-wrap: pretty; }

code { font: 0.88em/1 var(--mono); padding: 2px 6px; border-radius: 6px; background: var(--bg-deep); border: 1px solid var(--border); }

/* the honest note */

.note {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 16px;
  align-items: start;
  margin: 72px 0 0;
  padding: 24px 28px;
  border: 1px dashed var(--border);
  border-radius: 14px;
  color: var(--muted);
}

.note strong { color: var(--text); font-weight: 600; }

.solo { display: grid; grid-template-rows: auto 12px auto; justify-items: center; padding-top: 4px; }
.solo span { width: 26px; height: 18px; border: 1.5px solid var(--accent); border-radius: 5px; }
.solo i { width: 1.5px; background: var(--border); }
.solo span + i + span { border-style: dashed; border-color: var(--border); }

/* steps */

.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(300px, 100%), 1fr));
  gap: 16px;
  margin: 40px 0 0;
  padding: 0;
  list-style: none;
  counter-reset: step;
}

.steps li {
  position: relative;
  padding: 28px 24px 24px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--surface);
  counter-increment: step;
}

.steps li::before {
  content: counter(step, decimal-leading-zero);
  display: block;
  margin: 0 0 20px;
  font: 500 13px/1 var(--mono);
  color: var(--accent);
}

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

/* features */

.feature {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 8fr);
  gap: 48px;
  align-items: center;
  margin: 64px 0 0;
}

.feature:nth-of-type(even) { grid-template-columns: minmax(0, 8fr) minmax(0, 5fr); }
.feature:nth-of-type(even) .copy { order: 2; }

.feature .copy p { color: var(--muted); }

.small {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(240px, 100%), 1fr));
  gap: 32px;
  margin: 80px 0 0;
  padding: 32px 0 0;
  border-top: 1px solid var(--border);
}

.small h3 { font-size: 18px; }
.small p { color: var(--muted); font-size: 16px; }

/* remote */

.remote {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 48px;
  align-items: start;
  padding: 48px;
  border-radius: 20px;
  background: var(--bg-deep);
  border: 1px solid var(--border);
}

.track { margin: 0; padding: 0; list-style: none; display: grid; gap: 0; }

.track li {
  position: relative;
  display: grid;
  grid-template-columns: 20px 1fr;
  gap: 2px 16px;
  padding: 0 0 28px;
}

.track li::before {
  content: "";
  grid-row: 1 / 3;
  width: 12px;
  height: 12px;
  margin: 6px 0 0 4px;
  border-radius: 50%;
  border: 2px solid var(--accent);
  background: var(--bg-deep);
}

.track li.now::before { background: var(--done); border-color: var(--done); }

.track li:not(:last-child)::after {
  content: "";
  position: absolute;
  left: 9px;
  top: 24px;
  bottom: 4px;
  width: 2px;
  background: repeating-linear-gradient(var(--border) 0 4px, transparent 4px 8px);
}

.track b { display: block; font: 500 12px/1.6 var(--mono); letter-spacing: 0.04em; text-transform: uppercase; color: var(--muted); }
.track span { grid-column: 2; }
.track span + span { color: var(--muted); font-size: 16px; }

/* requirements and download */

.needs {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(240px, 100%), 1fr));
  gap: 16px;
  margin: 40px 0 0;
  padding: 0;
  list-style: none;
}

.needs li { padding: 20px; border: 1px solid var(--border); border-radius: 12px; background: var(--surface); }
.needs b { display: block; font: 500 12px/1.6 var(--mono); letter-spacing: 0.04em; text-transform: uppercase; color: var(--muted); margin: 0 0 6px; }

.download {
  padding: 64px 48px;
  border-radius: 20px;
  text-align: center;
  background:
    linear-gradient(var(--grid) 1px, transparent 1px) center / 32px 32px,
    linear-gradient(90deg, var(--grid) 1px, transparent 1px) center / 32px 32px,
    var(--surface);
  border: 1px solid var(--border);
}

.download img { width: 96px; height: 96px; margin: 0 auto 24px; }
.download h2 { margin: 0 auto; }
.download .section-lede { margin: 16px auto 0; }
.download .cta { justify-content: center; }

.foot {
  display: flex;
  justify-content: space-between;
  gap: 12px 24px;
  flex-wrap: wrap;
  margin-top: 96px;
  padding: 24px 0 48px;
  border-top: 1px solid var(--border);
  font-size: 14px;
  color: var(--muted);
}

.foot a { color: var(--muted); }

@media (max-width: 760px) {
  body { font-size: 16px; }
  .hero { padding-top: 32px; }
  .hero .shot { margin-top: 40px; }
  section { padding-top: 72px; }
  .feature, .feature:nth-of-type(even) { grid-template-columns: 1fr; gap: 24px; margin-top: 48px; }
  .feature:nth-of-type(even) .copy { order: 0; }
  .remote { grid-template-columns: 1fr; gap: 32px; padding: 28px 24px; }
  .download { padding: 48px 20px; }
  .note { padding: 20px; }
  .nav .hide-small { display: none; }
}

@media (prefers-reduced-motion: no-preference) {
  .hero h1, .hero .lede, .hero .cta { animation: rise 0.7s cubic-bezier(0.2, 0.7, 0.2, 1) both; }
  .hero .lede { animation-delay: 0.08s; }
  .hero .cta { animation-delay: 0.16s; }
  .hero .shot { animation: rise 0.9s 0.24s cubic-bezier(0.2, 0.7, 0.2, 1) both; }
  .eyebrow .dot { animation: pulse 2.4s ease-in-out infinite; }
}

@keyframes rise { from { opacity: 0; transform: translateY(14px); } }
@keyframes pulse { 50% { opacity: 0.35; } }