/* Activity+ — activityplus.xyz
   Cool paper, ink, and the six metric colors of the app as the only accents. */

@font-face { font-family: "Bricolage"; src: url("/assets/fonts/bricolage-grotesque-latin-wght-normal.woff2") format("woff2"); font-weight: 200 800; font-display: swap; }
@font-face { font-family: "Public Sans"; src: url("/assets/fonts/public-sans-latin-wght-normal.woff2") format("woff2"); font-weight: 100 900; font-display: swap; }
@font-face { font-family: "Public Sans"; src: url("/assets/fonts/public-sans-latin-wght-italic.woff2") format("woff2"); font-weight: 100 900; font-style: italic; font-display: swap; }
@font-face { font-family: "JetBrains Mono"; src: url("/assets/fonts/jetbrains-mono-latin-400-normal.woff2") format("woff2"); font-weight: 400; font-display: swap; }
@font-face { font-family: "JetBrains Mono"; src: url("/assets/fonts/jetbrains-mono-latin-600-normal.woff2") format("woff2"); font-weight: 600; font-display: swap; }

:root {
  --paper: #EDF0F6;
  --paper-2: #E2E7F1;
  --ink: #15172B;
  --muted: #555B75;
  --screen: #171A33;
  --line: rgba(21, 23, 43, 0.12);
  --cpu: #3E6BFF;
  --mem: #8B5CF6;
  --gpu: #E8508A;
  --disk: #E09412;
  --net: #10A7AD;
  --energy: #26A862;
  --display: "Bricolage", "Avenir Next", system-ui, sans-serif;
  --text: "Public Sans", -apple-system, system-ui, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, "SF Mono", monospace;
  --radius-l: 22px;
  --radius-m: 12px;
  --measure: 34rem;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 64px; }
body {
  margin: 0; background: var(--paper); color: var(--ink);
  font: 400 1.0625rem/1.6 var(--text); -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; }
code { font-family: var(--mono); font-size: 0.88em; background: var(--paper-2); padding: 0.1em 0.35em; border-radius: 5px; }
:focus-visible { outline: 3px solid var(--cpu); outline-offset: 3px; border-radius: 6px; }
.skip { position: absolute; left: -999px; top: 8px; background: var(--ink); color: var(--paper); padding: 8px 14px; border-radius: 8px; z-index: 10; }
.skip:focus { left: 8px; }

h1, h2, h3 { font-family: var(--display); font-weight: 750; letter-spacing: -0.03em; line-height: 1.02; margin: 0; }
h1 { font-size: clamp(2.6rem, 5vw, 4.6rem); font-variation-settings: "wdth" 80; }
h2 { font-size: clamp(2rem, 3.8vw, 3.2rem); }
h3 { font-size: 1.45rem; letter-spacing: -0.02em; margin-top: 2.2rem; }
p { margin: 1rem 0 0; max-width: var(--measure); }

/* ── Menu bar ─────────────────────────────────────────────────────────── */
.menubar {
  position: sticky; top: 0; z-index: 5; height: 40px; display: flex; align-items: center; justify-content: space-between;
  padding: 0 18px; background: rgba(237, 240, 246, 0.72); backdrop-filter: saturate(180%) blur(18px);
  -webkit-backdrop-filter: saturate(180%) blur(18px); border-bottom: 1px solid var(--line); font-size: 0.875rem;
}
.menubar-left { display: flex; align-items: center; gap: 1.3rem; }
.menubar-left a { text-decoration: none; color: var(--muted); }
.menubar-left a:hover { color: var(--ink); }
.menubar .brand { display: flex; align-items: center; gap: 7px; font-weight: 700; color: var(--ink); }
.menubar-right { display: flex; align-items: center; gap: 1.1rem; font-variant-numeric: tabular-nums; color: var(--ink); }
.w { display: inline-flex; align-items: center; gap: 5px; }
.w b { font-weight: 600; }
.w-net { flex-direction: column; align-items: flex-end; font-size: 0.62rem; line-height: 1.1; font-style: normal; }
.w-net i { font-style: normal; }
.ring-track { fill: none; stroke: rgba(21, 23, 43, 0.18); stroke-width: 3; }
.ring-fill { fill: none; stroke: var(--energy); stroke-width: 3; stroke-linecap: round; transform: rotate(-90deg); transform-origin: center;
  stroke-dasharray: 34 100; transition: stroke-dasharray 0.6s ease, stroke 0.6s ease; }

/* ── Hero ─────────────────────────────────────────────────────────────── */
.hero {
  display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr); gap: clamp(2rem, 5vw, 5rem);
  align-items: center; max-width: 1240px; margin: 0 auto; padding: clamp(3rem, 8vh, 6rem) 24px 4rem;
}
.lede { font-size: 1.25rem; color: var(--muted); margin-top: 1.6rem; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 2rem; }
.fine { font-size: 0.875rem; color: var(--muted); margin-top: 1rem; }
.button {
  display: inline-flex; align-items: center; justify-content: center; height: 48px; padding: 0 22px; border-radius: 999px;
  font: 600 1rem var(--text); text-decoration: none; cursor: pointer; border: 1px solid transparent; transition: transform 0.15s ease;
}
.button:active { transform: scale(0.98); }
.button.primary { background: var(--ink); color: var(--paper); }
.button.primary:hover { background: #2A2D4D; }
.button.quiet { background: transparent; color: var(--ink); border-color: var(--line); }
.button.quiet:hover { background: var(--paper-2); }
.button.big { height: 58px; padding: 0 30px; font-size: 1.1rem; margin-top: 1.6rem; }

/* The fold: processes collapsing into apps, played once. */
.fold {
  margin: 0; background: var(--screen); color: #EDEFF8; border-radius: var(--radius-l); padding: 18px 18px 22px;
  box-shadow: 0 40px 90px -30px rgba(21, 23, 60, 0.55); min-height: 470px; position: relative; overflow: hidden;
}
.fold-head { display: flex; justify-content: space-between; align-items: baseline; padding: 4px 8px 14px; font-weight: 700; font-family: var(--display); font-size: 1.35rem; letter-spacing: -0.02em; }
.fold-sort { font-family: var(--text); font-weight: 400; font-size: 0.8rem; color: rgba(237, 239, 248, 0.55); letter-spacing: 0; }
.fold-list { list-style: none; margin: 0; padding: 0; position: relative; height: 410px; }
.fold-list li {
  position: absolute; left: 0; right: 0; display: flex; align-items: center; gap: 10px; height: 30px; padding: 0 10px;
  font: 400 0.78rem var(--mono); color: rgba(237, 239, 248, 0.75); border-radius: 7px;
  transition: transform 0.9s cubic-bezier(0.2, 0.9, 0.2, 1), opacity 0.5s ease;
}
.fold-list li .mb { margin-left: auto; color: rgba(237, 239, 248, 0.4); }
.fold-list li.app {
  height: 58px; padding: 0 14px; background: rgba(255, 255, 255, 0.06); border: 1px solid rgba(255, 255, 255, 0.08);
  font: 600 1rem var(--text); color: #fff; opacity: 0;
}
.fold-list li.app .icon { width: 30px; height: 30px; border-radius: 8px; flex: none; }
.fold-list li.app small { display: block; font-weight: 400; font-size: 0.72rem; color: rgba(237, 239, 248, 0.55); }
.fold-list li.app .mb { color: #fff; font: 700 1.05rem var(--text); font-variant-numeric: tabular-nums; }
.fold.folded li.proc { opacity: 0; }
.fold.folded li.app { opacity: 1; }

/* ── Film ─────────────────────────────────────────────────────────────── */
.film { max-width: 1240px; margin: 0 auto; padding: 0 24px 6rem; }
.film-frame { border-radius: var(--radius-l); overflow: hidden; background: var(--screen); box-shadow: 0 50px 120px -40px rgba(21, 23, 60, 0.6); }
.film video { width: 100%; display: block; aspect-ratio: 16 / 9; background: var(--screen); }

/* ── Answers ──────────────────────────────────────────────────────────── */
.answer {
  display: grid; grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr); gap: clamp(2rem, 5vw, 5rem); align-items: center;
  max-width: 1240px; margin: 0 auto; padding: 4.5rem 24px;
}
.answer.flip .answer-copy { order: 2; }
.answer + .answer { border-top: 1px solid var(--line); }
.shot { border-radius: 16px; overflow: hidden; box-shadow: 0 30px 70px -25px rgba(21, 23, 60, 0.5), 0 0 0 1px rgba(21, 23, 43, 0.08); }
.facts { list-style: none; padding: 0; margin: 1.6rem 0 0; display: grid; gap: 0.6rem; }
.facts li { display: flex; gap: 0.7rem; align-items: baseline; }
.dot { width: 10px; height: 10px; border-radius: 50%; flex: none; transform: translateY(-1px); }
.dot.cpu { background: var(--cpu); } .dot.mem { background: var(--mem); } .dot.gpu { background: var(--gpu); } .dot.energy { background: var(--energy); }

/* ── Menu bar builder ─────────────────────────────────────────────────── */
.builder { background: var(--screen); color: #EDEFF8; padding: 6rem 24px; margin-top: 3rem; }
.builder > * { max-width: 1240px; margin-left: auto; margin-right: auto; }
.builder-copy p { color: rgba(237, 239, 248, 0.7); }
.builder-stage { display: grid; grid-template-columns: 1fr auto; grid-template-rows: auto 1fr; gap: 1.6rem 3rem; margin-top: 3rem; }
.fake-bar {
  grid-column: 1 / -1; height: 56px; border-radius: 14px; display: flex; align-items: center; justify-content: flex-end; gap: 22px;
  padding: 0 22px; background: rgba(255, 255, 255, 0.07); border: 1px solid rgba(255, 255, 255, 0.1);
  font: 600 1rem var(--text); font-variant-numeric: tabular-nums; overflow-x: auto;
}
.fake-bar .item { display: inline-flex; align-items: center; gap: 7px; white-space: nowrap; animation: pop 0.35s cubic-bezier(0.2, 1.4, 0.4, 1); }
.fake-bar .label { font-size: 0.62rem; opacity: 0.7; }
.fake-bar .stack { display: flex; flex-direction: column; font-size: 0.66rem; line-height: 1.15; text-align: right; }
@keyframes pop { from { transform: translateY(-8px) scale(0.8); opacity: 0; } }
.builder-controls { display: flex; flex-wrap: wrap; gap: 10px; align-content: flex-start; }
.chip {
  height: 42px; padding: 0 18px; border-radius: 999px; font: 600 0.95rem var(--text); cursor: pointer;
  color: #EDEFF8; background: transparent; border: 1px solid rgba(255, 255, 255, 0.22);
}
.chip.on { background: #EDEFF8; color: var(--screen); border-color: #EDEFF8; }
.switch { display: inline-flex; align-items: center; gap: 8px; margin-left: 8px; color: rgba(237, 239, 248, 0.75); font-size: 0.95rem; }
.switch input { width: 18px; height: 18px; accent-color: var(--energy); }
.builder-panel { width: 340px; border-radius: 16px; box-shadow: 0 30px 80px rgba(0, 0, 0, 0.5); grid-row: 2; grid-column: 2; }

/* ── Dev + agents ─────────────────────────────────────────────────────── */
.dev { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(2rem, 5vw, 5rem); max-width: 1240px; margin: 0 auto; padding: 7rem 24px 5rem; align-items: start; }
.code { position: relative; margin-top: 1.2rem; }
.code pre { margin: 0; padding: 16px 84px 16px 16px; background: var(--screen); color: #EDEFF8; border-radius: var(--radius-m); overflow-x: auto; font: 0.82rem/1.5 var(--mono); }
.code pre code { background: none; padding: 0; color: inherit; }
.copy { position: absolute; right: 8px; top: 8px; height: 32px; padding: 0 12px; border-radius: 8px; border: 0; background: rgba(255, 255, 255, 0.14); color: #fff; font: 600 0.8rem var(--text); cursor: pointer; }
.terminal { background: #0F1126; border-radius: var(--radius-l); overflow: hidden; box-shadow: 0 40px 90px -30px rgba(21, 23, 60, 0.55); }
.terminal-bar { display: flex; gap: 7px; padding: 14px 16px; background: #1B1E3A; }
.terminal-bar i { width: 12px; height: 12px; border-radius: 50%; background: #FF5F57; }
.terminal-bar i:nth-child(2) { background: #FEBC2E; } .terminal-bar i:nth-child(3) { background: #28C840; }
.terminal pre { margin: 0; padding: 22px 24px 28px; color: #D9DCEC; font: 0.84rem/1.75 var(--mono); overflow-x: auto; }
.t-dim { color: rgba(217, 220, 236, 0.5); } .t-port { color: #8FB0FF; font-weight: 600; } .t-warn { color: #F5B93D; } .t-ok { color: #4ED68A; }

/* ── Also inside ──────────────────────────────────────────────────────── */
.more { max-width: 1240px; margin: 0 auto; padding: 3rem 24px 6rem; }
.more-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 4rem; margin: 2.2rem 0 0; }
.more-list div { padding: 1.1rem 0; border-top: 1px solid var(--line); }
.more-list dt { font-weight: 700; }
.more-list dd { margin: 0.25rem 0 0; color: var(--muted); max-width: 30rem; }

/* ── Privacy ──────────────────────────────────────────────────────────── */
.privacy { max-width: 1240px; margin: 0 auto; padding: 5rem 24px; border-top: 1px solid var(--line); }
.privacy h2 { font-size: clamp(2.4rem, 5.2vw, 4.4rem); max-width: 14ch; }
.privacy-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 2rem; margin-top: 2.4rem; }
.privacy-grid p { margin: 0; color: var(--muted); }
.privacy-grid strong { display: block; color: var(--ink); font-size: 1.15rem; margin-bottom: 0.3rem; }

/* ── Download ─────────────────────────────────────────────────────────── */
.download { text-align: center; padding: 6rem 24px 7rem; background:
  radial-gradient(60rem 30rem at 50% 0%, rgba(62, 107, 255, 0.16), transparent 70%), var(--paper); }
.download img { margin: 0 auto 1.5rem; filter: drop-shadow(0 20px 40px rgba(62, 107, 255, 0.35)); }
.download h2 { font-size: clamp(2.6rem, 5vw, 4rem); }
.download p { margin-left: auto; margin-right: auto; color: var(--muted); }
.download code { font-size: 0.75em; word-break: break-all; }

.footer { display: flex; flex-wrap: wrap; gap: 1.6rem; justify-content: center; padding: 2rem 24px 3rem; font-size: 0.875rem; color: var(--muted); border-top: 1px solid var(--line); }
.footer a { color: var(--muted); }

/* ── Legal page ───────────────────────────────────────────────────────── */
.legal { max-width: 46rem; margin: 0 auto; padding: 4rem 24px 5rem; }
.legal h1 { font-size: clamp(2.4rem, 5vw, 3.6rem); }
.legal h2 { font-size: 1.6rem; margin-top: 3rem; }
.legal p, .legal li { max-width: 40rem; }
.legal ul { padding-left: 1.2rem; }

/* ── Small screens ────────────────────────────────────────────────────── */
@media (max-width: 900px) {
  .hero, .answer, .dev { grid-template-columns: 1fr; }
  .answer.flip .answer-copy { order: 0; }
  .builder-stage { grid-template-columns: 1fr; }
  .builder-panel { grid-row: auto; grid-column: auto; width: min(340px, 100%); }
  .more-list, .privacy-grid { grid-template-columns: 1fr; }
  .menubar-left a:not(.brand) { display: none; }
  .fold { min-height: 440px; }
}
@media (max-width: 520px) {
  .menubar-right .w-net, .menubar-right .w-temp { display: none; }
  .lede { font-size: 1.1rem; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .fold-list li, .ring-fill { transition: none; }
  .fake-bar .item { animation: none; }
}