/* ============================================================
   Kaset — tokens
   ============================================================ */

:root {
  --bg: #000;
  --ink: #f5f5f7;
  --ink-2: #a1a1a6;
  --ink-3: #86868b;

  /* Side A: YouTube Music (a1/b1 keep white button text at 4.5:1 or better) */
  --a1: #e0144d;
  --a2: #a33cff;
  /* Side B: YouTube */
  --b1: #e60a2a;
  --b2: #ff8a1e;

  /* Live accent, follows the active side */
  --c1: var(--a1);
  --c2: var(--a2);

  --font: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Inter", "Helvetica Neue", sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;

  --page: 1120px;
  --gutter: clamp(20px, 5vw, 44px);
  --ease: cubic-bezier(0.25, 0.1, 0.25, 1);
  --ease-out: cubic-bezier(0.2, 0.8, 0.2, 1);
}

html[data-side="b"] {
  --c1: var(--b1);
  --c2: var(--b2);
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.47;
  letter-spacing: -0.011em;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a { color: inherit; }
p { margin: 0; }
h1, h2, h3 { margin: 0; font-weight: 600; text-wrap: balance; }
code, pre { font-family: var(--mono); }

:focus-visible {
  outline: 2px solid #fff;
  outline-offset: 3px;
  border-radius: 6px;
}

/* ============================================================
   Type
   ============================================================ */

h1 {
  font-size: clamp(2.75rem, 7vw, 5rem);
  line-height: 1.05;
  letter-spacing: -0.025em;
}

h2 {
  font-size: clamp(2rem, 4.6vw, 3.5rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
}

h3 {
  font-size: 1.5rem;
  line-height: 1.2;
  letter-spacing: -0.015em;
}

.eyebrow {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--ink-2);
  margin-bottom: 14px;
}

.eyebrow-a, .eyebrow-b {
  color: transparent;
  -webkit-background-clip: text;
  background-clip: text;
}

.eyebrow-a { background-image: linear-gradient(90deg, #ff5c86, #c084fc); }
.eyebrow-b { background-image: linear-gradient(90deg, #ff4d5e, #ffb347); }

.subhead {
  margin-top: 20px;
  font-size: clamp(1.15rem, 2vw, 1.5rem);
  line-height: 1.35;
  font-weight: 400;
  color: var(--ink-2);
  max-width: 40rem;
  margin-left: auto;
  margin-right: auto;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

.wide { display: none; }
@media (min-width: 700px) { .wide { display: inline; } }

/* ============================================================
   Liquid Glass
   ============================================================ */

.glass {
  --r: 28px;
  border-radius: var(--r);
  background-color: rgba(255, 255, 255, 0.05);
  background-image:
    radial-gradient(140% 70% at 18% 0%, rgba(255, 255, 255, 0.12), rgba(255, 255, 255, 0) 55%),
    linear-gradient(160deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.015) 60%, rgba(255, 255, 255, 0.03));
  -webkit-backdrop-filter: blur(28px) saturate(160%);
  backdrop-filter: blur(28px) saturate(160%);
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.18),
    inset 0 -1px 0 rgba(0, 0, 0, 0.3);
}

/* ============================================================
   Nav
   ============================================================ */

.nav {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(0, 0, 0, 0.72);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.nav-inner {
  max-width: 980px;
  margin: 0 auto;
  height: 48px;
  padding: 0 var(--gutter);
  display: flex;
  align-items: center;
  gap: 28px;
  font-size: 0.8rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  margin-right: auto;
}

.brand svg { width: 22px; height: auto; fill: var(--c1); transition: fill 1s var(--ease-out); }
.brand .w { fill: rgba(0, 0, 0, 0.35); }
.brand .h { fill: #fff; }

.nav-links { display: flex; gap: 26px; }
.nav-links a { text-decoration: none; color: rgba(245, 245, 247, 0.8); }
.nav-links a:hover { color: #fff; }

.nav-cta {
  padding: 5px 12px;
  border-radius: 999px;
  background: var(--c1);
  color: #fff;
  font-weight: 500;
  text-decoration: none;
  transition: background-color 1s var(--ease-out);
}

/* ============================================================
   Buttons and links
   ============================================================ */

.cta-row {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 14px 30px;
  margin-top: 30px;
}

.button {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 12px 24px;
  border-radius: 999px;
  background: var(--c1);
  color: #fff;
  font-size: 1.05rem;
  font-weight: 500;
  text-decoration: none;
  transition: background-color 1s var(--ease-out), transform 160ms var(--ease-out);
}

.button:hover { transform: translateY(-1px); }
.button:active { transform: translateY(1px); }

.link {
  font-size: 1.05rem;
  color: #ff5c86;
  text-decoration: none;
}

html[data-side="b"] .link { color: #ff6b5e; }
.link:hover { text-decoration: underline; text-underline-offset: 3px; }

/* ============================================================
   Sections
   ============================================================ */

main > section {
  position: relative;
  max-width: var(--page);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.head { text-align: center; max-width: 46rem; margin: 0 auto; }

/* ============================================================
   Hero
   ============================================================ */

.hero {
  text-align: center;
  padding-top: clamp(72px, 10vw, 120px) !important;
  /* The glow is wider than phones; clip it sideways only */
  overflow-x: clip;
}

.stage {
  position: relative;
  margin-top: clamp(48px, 7vw, 84px);
  display: grid;
  justify-items: center;
}

.glow {
  position: absolute;
  top: 0;
  left: 50%;
  width: min(900px, 120vw);
  aspect-ratio: 1.3;
  translate: -50% -20%;
  border-radius: 50%;
  background: radial-gradient(closest-side, var(--c1), var(--c2) 45%, transparent 75%);
  filter: blur(70px);
  opacity: 0.42;
  transition: background 1.4s var(--ease-out);
  pointer-events: none;
}

/* ============================================================
   Cassette
   ============================================================ */

.cassette-scene {
  position: relative;
  width: min(640px, 92vw);
  perspective: 1800px;
  container-type: inline-size;
}

.cassette {
  position: relative;
  width: 100%;
  aspect-ratio: 14 / 9;
  transform-style: preserve-3d;
  transition: transform 1.1s var(--ease-out);
  cursor: pointer;
}

html[data-side="b"] .cassette { transform: rotateY(180deg); }

.face {
  position: absolute;
  inset: 0;
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
}

.face-b { transform: rotateY(180deg); }

.shell {
  position: absolute;
  inset: 0;
  border-radius: 7cqw;
  background-color: rgba(255, 255, 255, 0.07);
  background-image:
    radial-gradient(120% 80% at 15% 0%, rgba(255, 255, 255, 0.28), rgba(255, 255, 255, 0) 50%),
    linear-gradient(160deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.02) 55%, rgba(255, 255, 255, 0.07));
  -webkit-backdrop-filter: blur(30px) saturate(200%);
  backdrop-filter: blur(30px) saturate(200%);
  border: 1px solid rgba(255, 255, 255, 0.26);
  box-shadow:
    inset 0 2px 0 rgba(255, 255, 255, 0.4),
    inset 0 -2px 0 rgba(0, 0, 0, 0.4),
    0 50px 100px -30px rgba(0, 0, 0, 0.9);
  overflow: hidden;
}

.screw {
  position: absolute;
  width: 2.6cqw;
  aspect-ratio: 1;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 35%, rgba(255, 255, 255, 0.55), rgba(255, 255, 255, 0.08) 65%);
  box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.3);
}

.screw.tl { top: 3.4cqw; left: 3.4cqw; }
.screw.tr { top: 3.4cqw; right: 3.4cqw; }
.screw.bl { bottom: 3.4cqw; left: 3.4cqw; }
.screw.br { bottom: 3.4cqw; right: 3.4cqw; }

/* Window: an SVG with exact reel geometry so the tape stays tangent to both spools */
.window {
  position: absolute;
  left: 11cqw;
  right: 11cqw;
  top: 9cqw;
  width: 78cqw;
  height: auto;
  border-radius: 3.6cqw;
  background: rgba(6, 6, 9, 0.7);
  box-shadow:
    inset 0 3px 10px rgba(0, 0, 0, 0.7),
    inset 0 0 0 1px rgba(255, 255, 255, 0.08);
  display: block;
}

.window .ring { fill: none; stroke: rgba(255, 255, 255, 0.06); stroke-width: 3; }
.window .tape { stroke: #2a1219; stroke-width: 5; stroke-linecap: round; fill: none; }
.window .teeth rect { fill: var(--hole, #3a0d1a); }
.face-b .window { --hole: #3a1206; }
.window .hub { animation: reel 4.2s linear infinite; }
.window .glare { fill: rgba(255, 255, 255, 0.05); pointer-events: none; }

@keyframes reel { to { transform: rotate(360deg); } }

.label {
  position: absolute;
  left: 13cqw;
  right: 13cqw;
  top: 41cqw;
  height: 12.5cqw;
  border-radius: 2.4cqw;
  display: flex;
  align-items: center;
  gap: 2.4cqw;
  padding: 0 4cqw;
  color: #fff;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.45),
    0 6px 20px -8px rgba(0, 0, 0, 0.6);
}

.label-a { background: linear-gradient(120deg, #ff1f57, #a33cff); }
.label-b { background: linear-gradient(120deg, #ff0a2a, #ff8a1e); }

.label-side {
  font-size: 2.4cqw;
  font-weight: 600;
  opacity: 0.9;
  padding: 0.7cqw 1.4cqw;
  border-radius: 999px;
  background: rgba(0, 0, 0, 0.22);
}

.label-name {
  font-size: 5cqw;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1;
  white-space: nowrap;
}

.label-glyph { margin-left: auto; width: 6cqw; height: 6cqw; }
.label-glyph svg { width: 100%; height: 100%; fill: #fff; opacity: 0.95; }

.mouth {
  position: absolute;
  bottom: 0;
  left: 31cqw;
  right: 31cqw;
  height: 7cqw;
  background: rgba(0, 0, 0, 0.3);
  clip-path: polygon(0 100%, 14% 0, 86% 0, 100% 100%);
}

/* Segmented control */

.segmented {
  --r: 999px;
  display: inline-flex;
  padding: 4px;
  margin-top: 36px;
}

.seg {
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--ink-2);
  font: inherit;
  font-size: 0.95rem;
  font-weight: 500;
  padding: 9px 20px;
  border-radius: 999px;
  cursor: pointer;
  transition: background-color 300ms var(--ease), color 300ms var(--ease);
}

.seg[aria-pressed="true"] {
  color: #fff;
  background: rgba(255, 255, 255, 0.16);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.2), 0 4px 12px -4px rgba(0, 0, 0, 0.6);
}

/* ============================================================
   Screenshot
   ============================================================ */

.shot { margin-top: clamp(48px, 7vw, 80px) !important; text-align: center; }

.shot-frame {
  border-radius: 18px;
  overflow: hidden;
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.08), 0 40px 100px -30px rgba(0, 0, 0, 0.9);
}

.shot-frame img {
  display: block;
  width: 108.1%;
  height: auto;
  max-width: none;
  margin: -2.7% -4.05% -5.5%;
}

.caption { margin-top: 22px; font-size: 0.92rem; color: var(--ink-3); }

/* ============================================================
   Feature sections
   ============================================================ */

.feature { padding-top: clamp(100px, 14vw, 180px) !important; }

.feature::before {
  content: "";
  position: absolute;
  z-index: 0;
  pointer-events: none;
  border-radius: 50%;
  filter: blur(90px);
  opacity: 0.22;
  width: 70%;
  height: 60%;
  left: 15%;
  top: 30%;
}

.side-a::before { background: radial-gradient(circle, #ff1f57, #a33cff 60%, transparent 72%); }
.side-b::before { background: radial-gradient(circle, #ff8a1e, #ff0a2a 60%, transparent 72%); }
.mac::before { background: radial-gradient(circle, #2563eb, #7c3aed 60%, transparent 72%); opacity: 0.18; }

.tiles {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: clamp(40px, 6vw, 64px);
}

.tiles.four { grid-template-columns: repeat(4, minmax(0, 1fr)); }

.tile {
  --r: 24px;
  display: flex;
  flex-direction: column;
  padding: 30px 28px;
  min-height: 300px;
}

.tile h3 { font-size: 1.35rem; }
.tile p { margin-top: 8px; color: var(--ink-2); font-size: 0.97rem; }
.tile p code { white-space: nowrap; }
.demo { margin-top: auto; padding-top: 26px; }

/* Demos */

.lyrics { display: grid; gap: 6px; font-weight: 600; font-size: 1.1rem; letter-spacing: -0.015em; }
.lyrics span { opacity: 0.3; }
.lyrics .now { opacity: 1; }

.eq {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 10px;
  align-items: end;
}

.eq i {
  display: block;
  height: calc(var(--v) * 76px);
  border-radius: 6px;
  background: linear-gradient(180deg, #ff5c86, #a33cff);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.4);
}

.eq-labels {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  text-align: center;
  font-size: 0.72rem;
  color: var(--ink-3);
  margin-top: 4px;
}

.queue { display: grid; gap: 8px; font-size: 0.95rem; }
.queue span { display: flex; justify-content: space-between; align-items: center; padding: 8px 12px; border-radius: 10px; background: rgba(255, 255, 255, 0.05); color: var(--ink-2); }
.queue .q-now { color: #fff; background: rgba(255, 255, 255, 0.12); font-weight: 600; }
.queue em { font-style: normal; font-size: 0.72rem; padding: 2px 8px; border-radius: 999px; background: linear-gradient(120deg, #ff1f57, #a33cff); color: #fff; }

.playerbar {
  --r: 999px;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 16px;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--ink-2);
}

.pb-play { color: #fff; font-size: 1rem; }
.pb-track { flex: 1; height: 4px; border-radius: 999px; background: rgba(255, 255, 255, 0.18); overflow: hidden; }
.pb-track i { display: block; width: 38%; height: 100%; background: #fff; }

.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chips span {
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 500;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.nowplaying { display: flex; align-items: center; gap: 14px; }

.np-art {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  flex-shrink: 0;
  background:
    radial-gradient(circle at 30% 30%, rgba(255, 255, 255, 0.5), transparent 45%),
    conic-gradient(from 200deg, #ff1f57, #a33cff, #2563eb, #ff1f57);
  box-shadow: 0 10px 24px -10px rgba(0, 0, 0, 0.8);
}

.np-meta { display: grid; line-height: 1.25; min-width: 0; }
.np-meta strong { font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.np-meta span { color: var(--ink-3); font-size: 0.9rem; }

.keys { display: flex; flex-wrap: wrap; gap: 8px; }

kbd {
  font-family: var(--font);
  font-weight: 600;
  font-size: 0.85rem;
  padding: 7px 11px;
  border-radius: 9px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.16), rgba(255, 255, 255, 0.06));
  border: 1px solid rgba(255, 255, 255, 0.16);
  box-shadow: 0 3px 0 rgba(0, 0, 0, 0.5), inset 0 1px 0 rgba(255, 255, 255, 0.3);
}

.ai {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border-radius: 999px;
  font-size: 0.88rem;
  font-weight: 500;
  border: 1px solid transparent;
  background-image:
    linear-gradient(rgba(16, 16, 20, 0.9), rgba(16, 16, 20, 0.9)),
    linear-gradient(120deg, #ff1f57, #a33cff, #2563eb);
  background-origin: border-box;
  background-clip: padding-box, border-box;
}

.ai-spark { color: #ff7ab0; }

pre.demo {
  margin: auto 0 0;
  padding: 14px 16px;
  border-radius: 12px;
  background: rgba(0, 0, 0, 0.45);
  border: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 0.85rem;
  line-height: 1.5;
  overflow-x: auto;
}

/* ============================================================
   Install
   ============================================================ */

.cmds {
  display: grid;
  gap: 12px;
  max-width: 560px;
  margin: 40px auto 0;
  text-align: left;
}

.cmd {
  --r: 16px;
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 4px 12px;
  padding: 12px 12px 12px 16px;
}

.cmd-label { grid-column: 1 / -1; font-size: 0.78rem; color: var(--ink-3); }
.cmd code { font-size: 0.92rem; overflow-x: auto; white-space: nowrap; }

.copy {
  appearance: none;
  font: inherit;
  font-size: 0.8rem;
  font-weight: 500;
  padding: 6px 12px;
  border-radius: 999px;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.14);
  cursor: pointer;
}

.copy:hover { background: rgba(255, 255, 255, 0.16); }

.fine { max-width: 560px; margin: 18px auto 0; font-size: 0.85rem; color: var(--ink-3); }

/* ============================================================
   Footer
   ============================================================ */

.footer {
  max-width: 980px;
  margin: clamp(80px, 12vw, 140px) auto 0;
  padding: 24px var(--gutter) 48px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--ink-3);
  font-size: 0.78rem;
  line-height: 1.6;
}

.footer a { color: var(--ink-2); text-decoration: none; }
.footer a:hover { text-decoration: underline; text-underline-offset: 3px; }
.footer-links { display: flex; flex-wrap: wrap; gap: 6px 22px; margin-top: 10px; }
.disclaimer { margin-top: 14px; max-width: 70ch; }

/* ============================================================
   Motion preferences
   ============================================================ */

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .window .hub { animation: none; }
  .cassette { transition: none; }
  .button { transition: none; }
}

/* ============================================================
   Responsive
   ============================================================ */

/* Four columns get too narrow for the AppleScript sample a bit before 960px */
@media (max-width: 1040px) {
  .tiles.four { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 960px) {
  .tiles, .tiles.four { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 600px) {
  body { font-size: 16px; }
  .nav-links { display: none; }
  .tiles, .tiles.four { grid-template-columns: 1fr; }
  .tile { min-height: 0; }
  .shot-frame { border-radius: 10px; }
  .glow { opacity: 0.5; }
  /* Wrap long commands at spaces instead of cutting them off */
  .cmd code { white-space: normal; overflow-wrap: anywhere; }
}