/* pistamix.com — the landing page for Pistamix (Mac app) and Pistamix Karaoke (website).
   Stage-console palette from the app: deep indigo, deck A cyan, deck B amber, karaoke purple.
   System font (San Francisco on a Mac) with size-specific tracking; motion settles like a
   critically damped spring and steps aside for reduced motion. */

:root {
  --bg: #0a0c16;
  --bg-2: #10132a;
  --panel: #151933;
  --raised: #1d2240;
  --line: rgba(255, 255, 255, 0.09);
  --line-strong: rgba(255, 255, 255, 0.16);
  --text: #f4f5fb;
  --muted: #a6acc8;
  --faint: #737a9c;
  --deck-a: #3dd6f5;
  --deck-b: #ffb547;
  --karaoke: #b18cff;
  --ok: #5ee08f;
  --font: -apple-system, BlinkMacSystemFont, 'SF Pro Text', 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --display: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  /* A critically damped settle (no overshoot), the house curve for everything that moves. */
  --settle: cubic-bezier(0.22, 1, 0.36, 1);
  --wrap: 1120px;
  --gutter: clamp(16px, 4vw, 32px);
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: 72px; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 400 1.0625rem/1.55 var(--font);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--deck-a); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }
:focus-visible { outline: 3px solid var(--deck-b); outline-offset: 3px; border-radius: 6px; }
.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 var(--gutter); }
.skip { position: absolute; left: -999px; top: 8px; background: var(--text); color: var(--bg); padding: 8px 12px; border-radius: 8px; z-index: 100; }
.skip:focus { left: 8px; }

/* Type: tighter tracking and leading as size grows; body stays near zero. */
h1, h2, h3 { font-family: var(--display); margin: 0; color: var(--text); }
.display { font-size: clamp(3rem, 9.5vw, 7.25rem); line-height: 0.98; letter-spacing: -0.045em; font-weight: 700; }
.title { font-size: clamp(2.1rem, 5.2vw, 3.75rem); line-height: 1.04; letter-spacing: -0.035em; font-weight: 700; }
.subtitle { font-size: clamp(1.45rem, 2.8vw, 2rem); line-height: 1.12; letter-spacing: -0.022em; font-weight: 650; }
.eyebrow { font-size: 0.8125rem; letter-spacing: 0.08em; text-transform: uppercase; font-weight: 600; color: var(--faint); margin: 0 0 14px; }
.lede { font-size: clamp(1.15rem, 1.9vw, 1.4rem); line-height: 1.45; letter-spacing: -0.012em; color: var(--muted); margin: 20px 0 0; max-width: 36em; }
.lede strong, .copy strong { color: var(--text); font-weight: 600; }
.copy { color: var(--muted); margin: 12px 0 0; }
.grad {
  background: linear-gradient(100deg, var(--deck-a) 0%, var(--karaoke) 52%, var(--deck-b) 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}

/* ---- Buttons: feedback on press, instantly ------------------------------------------------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font: 600 1.0625rem/1 var(--font); letter-spacing: -0.01em;
  padding: 14px 22px; border-radius: 980px; border: 0; cursor: pointer;
  background: var(--text); color: #0a0c16; text-decoration: none;
  transition: transform 100ms ease-out, background-color 160ms ease-out, box-shadow 160ms ease-out;
  -webkit-tap-highlight-color: transparent;
}
.btn:hover { text-decoration: none; background: #ffffff; box-shadow: 0 8px 30px rgba(255, 255, 255, 0.12); }
.btn:active { transform: scale(0.97); }
.btn.secondary { background: rgba(255, 255, 255, 0.08); color: var(--text); box-shadow: inset 0 0 0 1px var(--line-strong); }
.btn.secondary:hover { background: rgba(255, 255, 255, 0.13); }
.btn.small { font-size: 0.875rem; padding: 8px 14px; }
.btn svg { width: 18px; height: 18px; flex: none; }
.link-arrow { font-weight: 600; letter-spacing: -0.01em; }
.link-arrow::after { content: ' ›'; }

/* ---- Navigation: a translucent layer, content scrolls underneath ---------------------------- */
.nav {
  position: fixed; inset: 0 0 auto; z-index: 50; height: 56px;
  background: rgba(10, 12, 22, 0.62);
  -webkit-backdrop-filter: blur(20px) saturate(180%); backdrop-filter: blur(20px) saturate(180%);
}
/* Scroll edge effect instead of a hard divider: a soft fade appears once content is underneath. */
.nav::after {
  content: ''; position: absolute; inset: auto 0 -16px; height: 16px; pointer-events: none;
  background: linear-gradient(rgba(10, 12, 22, 0.55), transparent);
  opacity: 0; transition: opacity 240ms ease-out;
}
.nav.scrolled::after { opacity: 1; }
.nav .wrap { height: 100%; display: flex; align-items: center; gap: 22px; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--text); font-weight: 650; font-size: 1.0625rem; letter-spacing: -0.02em; }
.brand:hover { text-decoration: none; }
.brand img { width: 28px; height: 28px; border-radius: 6.5px; }
.nav-links { display: flex; gap: 22px; margin-left: auto; font-size: 0.875rem; }
.nav-links a { color: var(--muted); transition: color 160ms; }
.nav-links a:hover { color: var(--text); text-decoration: none; }
.lang { font-size: 0.8125rem; font-weight: 600; color: var(--muted); border: 1px solid var(--line-strong); border-radius: 980px; padding: 3px 9px; }
.lang:hover { color: var(--text); text-decoration: none; }
@media (max-width: 720px) { .nav-links .hide-sm { display: none; } .nav .wrap { gap: 14px; } .nav-links { gap: 16px; } }

/* ---- Hero ----------------------------------------------------------------------------------- */
.hero { position: relative; padding: 132px 0 0; text-align: center; overflow: hidden; }
.hero::before {
  /* Two deck lights behind the stage, the colours of the app's decks. */
  content: ''; position: absolute; inset: -10% -20% auto; height: 1100px; pointer-events: none; z-index: -1;
  background:
    radial-gradient(38% 34% at 22% 62%, rgba(61, 214, 245, 0.20), transparent 70%),
    radial-gradient(38% 34% at 78% 62%, rgba(255, 181, 71, 0.16), transparent 70%),
    radial-gradient(40% 30% at 50% 18%, rgba(177, 140, 255, 0.14), transparent 70%);
}
.app-icon { width: 104px; height: 104px; margin: 0 auto 26px; filter: drop-shadow(0 18px 36px rgba(61, 214, 245, 0.18)) drop-shadow(0 18px 36px rgba(255, 181, 71, 0.12)); }
.hero .lede { margin-left: auto; margin-right: auto; }
.cta { display: flex; flex-wrap: wrap; gap: 14px 22px; justify-content: center; align-items: center; margin-top: 34px; }
.fineprint { color: var(--faint); font-size: 0.875rem; margin-top: 16px; }

/* The app, on a window of its own, with a segmented control to switch views. */
.stage { position: relative; margin: 64px auto 0; max-width: 1240px; padding: 0 var(--gutter); }
.segmented {
  position: relative; display: inline-grid; grid-auto-flow: column; grid-auto-columns: 1fr;
  background: rgba(255, 255, 255, 0.07); border-radius: 980px; padding: 3px; margin: 0 auto 22px;
  box-shadow: inset 0 0 0 1px var(--line);
}
.segmented button {
  position: relative; z-index: 1; font: 600 0.875rem var(--font); letter-spacing: -0.005em; color: var(--muted);
  background: none; border: 0; padding: 8px 18px; border-radius: 980px; cursor: pointer; transition: color 200ms;
}
.segmented button[aria-selected='true'] { color: var(--text); }
.segmented .thumb {
  position: absolute; z-index: 0; top: 3px; bottom: 3px; left: 3px; border-radius: 980px;
  background: rgba(255, 255, 255, 0.14); box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
  transition: transform 420ms var(--settle), width 420ms var(--settle);
}
.window {
  position: relative; border-radius: 14px; overflow: hidden; background: #0d0f1c;
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.10), 0 40px 120px -20px rgba(0, 0, 0, 0.8), 0 24px 60px -30px rgba(61, 214, 245, 0.25);
}
.window .bar { height: 30px; display: flex; align-items: center; gap: 8px; padding: 0 12px; background: #161927; border-bottom: 1px solid rgba(255, 255, 255, 0.05); }
.window .bar i { width: 12px; height: 12px; border-radius: 50%; background: #3a3f57; display: block; }
.window .bar i:nth-child(1) { background: #ff5f57; } .window .bar i:nth-child(2) { background: #febc2e; } .window .bar i:nth-child(3) { background: #28c840; }
.views { position: relative; aspect-ratio: 16 / 10; }
.views img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: 0; transition: opacity 380ms ease-out; }
.views img.on { opacity: 1; }

/* ---- Sections ------------------------------------------------------------------------------- */
section.block { padding: clamp(88px, 12vw, 150px) 0 0; }
.center { text-align: center; }
.center .lede { margin-left: auto; margin-right: auto; }

/* Controllers */
.brands { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 18px; margin-top: 48px; text-align: left; }
.brands > div { background: var(--panel); border-radius: 22px; padding: 26px; box-shadow: inset 0 0 0 1px var(--line); }
.brands h3 { font-size: 1.25rem; letter-spacing: -0.02em; margin-bottom: 14px; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; list-style: none; margin: 0; padding: 0; }
.chips li { font-size: 0.9375rem; padding: 7px 13px; border-radius: 980px; background: rgba(255, 255, 255, 0.06); color: var(--text); box-shadow: inset 0 0 0 1px var(--line); }
.chips li.star { box-shadow: inset 0 0 0 1px rgba(61, 214, 245, 0.5); }
.note { color: var(--faint); font-size: 0.9375rem; margin-top: 18px; }

/* Bento grid of features */
.bento { display: grid; grid-template-columns: repeat(6, 1fr); gap: 18px; margin-top: 56px; }
.card {
  position: relative; overflow: hidden; border-radius: 26px; padding: clamp(24px, 3vw, 36px);
  background: linear-gradient(180deg, var(--panel), #11152b); box-shadow: inset 0 0 0 1px var(--line);
}
.card h3 { font-size: clamp(1.4rem, 2.4vw, 1.9rem); line-height: 1.1; letter-spacing: -0.025em; font-weight: 700; }
.card p { color: var(--muted); margin: 10px 0 0; }
.card .tag { display: inline-block; font-size: 0.75rem; font-weight: 600; letter-spacing: 0.06em; text-transform: uppercase; margin-bottom: 12px; }
.card .tag.a { color: var(--deck-a); } .card .tag.b { color: var(--deck-b); } .card .tag.k { color: var(--karaoke); } .card .tag.g { color: var(--ok); }
.span-6 { grid-column: span 6; } .span-4 { grid-column: span 4; } .span-3 { grid-column: span 3; } .span-2 { grid-column: span 2; }
@media (max-width: 900px) { .span-4, .span-3 { grid-column: span 6; } .span-2 { grid-column: span 3; } }
@media (max-width: 560px) { .span-2 { grid-column: span 6; } }
.card.feature { display: grid; grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr); gap: 36px; align-items: center; }
@media (max-width: 900px) { .card.feature { grid-template-columns: 1fr; } }
.card.feature .shot { border-radius: 12px; overflow: hidden; box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.08), 0 30px 60px -20px rgba(0, 0, 0, 0.7); }
.ticks { list-style: none; padding: 0; margin: 18px 0 0; display: grid; gap: 8px; }
.ticks li { position: relative; padding-left: 26px; color: var(--muted); }
.ticks li::before { content: ''; position: absolute; left: 2px; top: 0.55em; width: 12px; height: 7px; border-left: 2px solid var(--karaoke); border-bottom: 2px solid var(--karaoke); transform: rotate(-45deg); }
.big-number { font: 700 clamp(2.6rem, 6vw, 4rem)/1 var(--display); letter-spacing: -0.04em; margin-top: 16px; }

/* Karaoke website: a TV and a phone */
.duo { position: relative; margin: 64px auto 0; max-width: 1000px; padding-bottom: 40px; }
.tv { width: 76%; border-radius: 18px; padding: 10px; background: #05060c; box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.10), 0 50px 120px -30px rgba(177, 140, 255, 0.35); }
.tv img { border-radius: 9px; }
.phone {
  position: absolute; right: 0; bottom: -4%; width: min(26%, 270px); border-radius: 40px; padding: 9px; background: #05060c;
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.14), 0 40px 80px -20px rgba(0, 0, 0, 0.85);
}
.phone img { border-radius: 32px; }
@media (max-width: 640px) { .tv { width: 100%; } .phone { position: relative; right: auto; bottom: auto; width: 58%; margin: -10% 4% 0 auto; } }
.steps3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; margin-top: 56px; text-align: left; counter-reset: s; }
.steps3 li { list-style: none; counter-increment: s; color: var(--muted); }
.steps3 li::before { content: counter(s); display: grid; place-items: center; width: 34px; height: 34px; border-radius: 50%; background: rgba(177, 140, 255, 0.16); color: var(--karaoke); font-weight: 700; margin-bottom: 12px; }
.steps3 strong { display: block; color: var(--text); font-size: 1.125rem; letter-spacing: -0.015em; margin-bottom: 4px; }
.steps3 { padding: 0; }
@media (max-width: 760px) { .steps3 { grid-template-columns: 1fr; gap: 20px; } }

/* Download */
.downloads { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; margin-top: 48px; text-align: left; }
@media (max-width: 760px) { .downloads { grid-template-columns: 1fr; } }
.dl { border-radius: 26px; padding: 30px; background: var(--panel); box-shadow: inset 0 0 0 1px var(--line); display: flex; flex-direction: column; gap: 10px; }
.dl.recommended { box-shadow: inset 0 0 0 1.5px rgba(61, 214, 245, 0.55), 0 30px 80px -40px rgba(61, 214, 245, 0.5); }
.dl h3 { font-size: 1.5rem; letter-spacing: -0.025em; }
.dl .meta { color: var(--faint); font-size: 0.9375rem; }
.dl .btn { align-self: flex-start; margin-top: 10px; }
.pill { display: inline-block; align-self: flex-start; font-size: 0.75rem; font-weight: 700; letter-spacing: 0.04em; text-transform: uppercase; padding: 4px 10px; border-radius: 980px; background: rgba(61, 214, 245, 0.14); color: var(--deck-a); }
.pill.grey { background: rgba(255, 255, 255, 0.08); color: var(--muted); }
.pill[hidden] { display: none; }
.install { margin-top: 26px; border-radius: 22px; padding: 26px 28px; background: rgba(255, 181, 71, 0.06); box-shadow: inset 0 0 0 1px rgba(255, 181, 71, 0.22); text-align: left; }
.install h3 { font-size: 1.125rem; letter-spacing: -0.015em; }
.install ol { margin: 12px 0 0; padding-left: 1.3em; color: var(--muted); display: grid; gap: 6px; }
.install strong { color: var(--text); font-weight: 600; }

/* FAQ */
.faq { max-width: 780px; margin: 40px auto 0; text-align: left; }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary { cursor: pointer; list-style: none; padding: 20px 36px 20px 0; position: relative; font-weight: 600; font-size: 1.125rem; letter-spacing: -0.015em; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: ''; position: absolute; right: 6px; top: 50%; width: 9px; height: 9px; border-right: 2px solid var(--muted); border-bottom: 2px solid var(--muted); transform: translateY(-70%) rotate(45deg); transition: transform 300ms var(--settle); }
.faq details[open] summary::after { transform: translateY(-30%) rotate(225deg); }
.faq details p { color: var(--muted); margin: 0 0 20px; }

/* Footer */
footer.site { margin-top: clamp(96px, 12vw, 150px); padding: 36px 0 48px; border-top: 1px solid var(--line); color: var(--faint); font-size: 0.875rem; }
footer.site .wrap { display: flex; flex-wrap: wrap; gap: 14px 28px; align-items: center; justify-content: space-between; }
footer.site a { color: var(--muted); }
.credit .heart { color: #f0473c; }
.credit .mct img { display: inline-block; width: 16px; height: 16px; border-radius: 4px; vertical-align: -3px; margin-right: 4px; background: #040e25; }
.foot-links { display: flex; gap: 18px; flex-wrap: wrap; }

/* ---- Motion: things settle into place as they arrive ---------------------------------------- */
.js .reveal { opacity: 0; transform: translateY(28px) scale(0.985); transition: opacity 700ms var(--settle), transform 900ms var(--settle); }
.js .reveal.in { opacity: 1; transform: none; }
.js .reveal.d1 { transition-delay: 60ms; } .js .reveal.d2 { transition-delay: 120ms; } .js .reveal.d3 { transition-delay: 180ms; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .js .reveal { transform: none; transition: opacity 300ms ease; }
  .segmented .thumb, .views img, .faq summary::after { transition-duration: 0ms; }
  .btn:active { transform: none; }
}
@media (prefers-reduced-transparency: reduce) {
  .nav { background: var(--bg); -webkit-backdrop-filter: none; backdrop-filter: none; }
}
@media (prefers-contrast: more) {
  :root { --muted: #d0d4e8; --faint: #a9afcc; --line: rgba(255, 255, 255, 0.3); }
  .nav { background: var(--bg); border-bottom: 1px solid var(--line-strong); }
}