:root {
  --night: #0d1030;
  --ink: #f1f2ff;
  --muted: #b9bde6;
  --cyan: #5fe1ff;
  --gold: #ffd36b;
  --line: rgba(255, 255, 255, 0.1);
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--night);
  color: var(--ink);
  font: 17px/1.6 "DM Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  overflow-x: hidden;
}
img { display: block; max-width: 100%; height: auto; }

/* Keyboard users can jump straight past the header; it appears only when focused. */
.skip {
  position: absolute; left: 16px; top: -60px; z-index: 100;
  background: var(--ink); color: #14123a; padding: 10px 16px; border-radius: 10px; font-weight: 600; text-decoration: none;
  transition: top 0.15s ease;
}
.skip:focus { top: 12px; }
/* Text for screen readers only. */
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }
/* A clear focus ring on every link and button when navigating by keyboard. */
a:focus-visible { outline: 3px solid var(--cyan); outline-offset: 3px; border-radius: 6px; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
/* Windows high-contrast mode drops backgrounds, so the gradient word needs a real colour there. */
@media (forced-colors: active) {
  .hero h1 span { background: none; color: CanvasText; -webkit-text-fill-color: CanvasText; }
  .btn { border: 1px solid ButtonText; }
}
a { color: var(--cyan); }
h1, h2, h3 { font-family: "Sora", sans-serif; line-height: 1.1; letter-spacing: -0.02em; margin: 0; }

.wrap { max-width: 1120px; margin: 0 auto; padding: 0 20px; }

/* Header */
.top { position: absolute; inset: 0 0 auto; z-index: 5; }
.top .wrap { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; font: 600 17px "Sora", sans-serif; }
.brand img { height: 24px; }
.brand .by { font: 400 14px "DM Sans", sans-serif; color: var(--muted); margin-left: -4px; }
.top nav a { color: var(--muted); text-decoration: none; margin-left: 22px; font-size: 15px; }
.top nav a:hover { color: var(--ink); }

/* Hero: the app's night sky and mountains */
.hero {
  position: relative;
  padding: 130px 0 0;
  background:
    radial-gradient(900px 600px at 78% 18%, rgba(122, 86, 255, 0.35), transparent 65%),
    radial-gradient(700px 500px at 10% 30%, rgba(60, 120, 255, 0.22), transparent 70%),
    linear-gradient(180deg, #0b0e2b 0%, #1d1a4c 55%, #2a2160 100%);
  overflow: hidden;
  isolation: isolate;
}
.stars, .stars::after {
  position: absolute; inset: 0; z-index: -1; pointer-events: none;
  background-image:
    radial-gradient(1.5px 1.5px at 12% 18%, #fff 50%, transparent 51%),
    radial-gradient(1px 1px at 28% 42%, #fff 50%, transparent 51%),
    radial-gradient(2px 2px at 44% 12%, #fff 50%, transparent 51%),
    radial-gradient(1px 1px at 63% 30%, #fff 50%, transparent 51%),
    radial-gradient(1.5px 1.5px at 81% 9%, #fff 50%, transparent 51%),
    radial-gradient(1px 1px at 92% 38%, #fff 50%, transparent 51%),
    radial-gradient(1.5px 1.5px at 6% 55%, #fff 50%, transparent 51%),
    radial-gradient(1px 1px at 55% 50%, #fff 50%, transparent 51%),
    radial-gradient(2px 2px at 72% 58%, #fff 50%, transparent 51%),
    radial-gradient(1px 1px at 35% 64%, #fff 50%, transparent 51%);
  opacity: 0.75;
}
.stars::after { content: ""; transform: translate(37%, 21%) scale(1.3); opacity: 0.5; }

.hero-grid {
  display: grid; grid-template-columns: 1.1fr 0.9fr; align-items: center; gap: 40px;
  position: relative; z-index: 3;
}
.eyebrow { color: var(--cyan); font-weight: 600; letter-spacing: 0.14em; text-transform: uppercase; font-size: 13px; }
.hero h1 { font-size: clamp(44px, 7vw, 84px); margin: 14px 0 18px; }
.hero h1 span {
  background: linear-gradient(90deg, var(--cyan), #a98bff 60%, var(--gold));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero p.lead { color: var(--muted); font-size: 20px; max-width: 520px; margin: 0 0 30px; }
.cta { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }
/* Buttons press like the app's gems: a raised lip that sinks under your finger, with a sheen on hover. */
.btn {
  --lip: rgba(0, 0, 0, 0.35);
  position: relative; overflow: hidden;
  display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 22px; border-radius: 999px; font-weight: 600; text-decoration: none;
  box-shadow: 0 5px 0 var(--lip), 0 10px 24px rgba(0, 0, 0, 0.25);
  transition: transform 0.18s cubic-bezier(0.2, 0.8, 0.3, 1.4), box-shadow 0.18s ease, background-color 0.2s ease;
  -webkit-tap-highlight-color: transparent;
}
.btn::after {
  content: ""; position: absolute; top: 0; bottom: 0; left: -60%; width: 45%;
  background: linear-gradient(100deg, transparent, rgba(255, 255, 255, 0.55), transparent);
  transform: skewX(-20deg); pointer-events: none;
}
.btn:hover { transform: translateY(-2px); box-shadow: 0 7px 0 var(--lip), 0 16px 32px rgba(0, 0, 0, 0.3); }
.btn:hover::after { left: 120%; transition: left 0.6s ease; }
.btn:active {
  transform: translateY(4px) scale(0.98);
  box-shadow: 0 1px 0 var(--lip), 0 4px 10px rgba(0, 0, 0, 0.25);
  transition-duration: 0.06s;
}
.btn:focus-visible { outline: 3px solid var(--cyan); outline-offset: 3px; }
.btn-primary { --lip: #8f93c9; background: var(--ink); color: #14123a; }
.btn-primary:hover { box-shadow: 0 7px 0 var(--lip), 0 0 0 4px rgba(95, 225, 255, 0.18), 0 16px 32px rgba(0, 0, 0, 0.3); }
.btn-ghost { --lip: rgba(95, 225, 255, 0.35); color: var(--ink); background: rgba(255, 255, 255, 0.06); border: 1px solid rgba(255, 255, 255, 0.25); }
.btn-ghost:hover { background: rgba(255, 255, 255, 0.12); }
.btn-ghost::after { background: linear-gradient(100deg, transparent, rgba(255, 255, 255, 0.18), transparent); }
@media (prefers-reduced-motion: reduce) {
  .btn, .btn::after { transition: none; }
  .btn:hover, .btn:active { transform: none; }
}
.btn small { display: block; font-size: 11px; font-weight: 600; opacity: 0.6; letter-spacing: 0.06em; text-transform: uppercase; }
.btn .stack { line-height: 1.15; }
.fineprint { color: var(--muted); font-size: 14px; margin: 18px 0 0; opacity: 0.85; }

/* Phone frame around real screenshots */
.phone {
  width: min(300px, 70vw); margin: 0 auto;
  border-radius: 46px; padding: 10px;
  background: linear-gradient(160deg, #3b3f63, #15172e);
  box-shadow: 0 40px 80px rgba(0, 0, 0, 0.55), inset 0 0 0 1px rgba(255, 255, 255, 0.12);
}
.phone img { border-radius: 37px; width: 100%; }
/* Every phone has a tight white glow hugging its edge that slowly breathes. It's its own layer, so
   it never lights up the phone's dark drop shadow. */
.phone { position: relative; }
.phone::after {
  content: ""; position: absolute; inset: 0; border-radius: inherit; pointer-events: none;
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.4), 0 0 10px 2px rgba(255, 255, 255, 0.5), 0 0 24px 2px rgba(255, 255, 255, 0.26);
  animation: phone-glow 5s ease-in-out infinite;
}
@keyframes phone-glow { 0%, 100% { opacity: 0.6; } 50% { opacity: 1; } }
/* The hero phone hovers, rising and settling like it's floating above the mountains. */
.hero .phone { transform: rotate(3deg); animation: levitate 6s ease-in-out infinite; }
@keyframes levitate {
  0%, 100% { transform: translateY(0) rotate(3deg); box-shadow: 0 40px 80px rgba(0, 0, 0, 0.55), inset 0 0 0 1px rgba(255, 255, 255, 0.12); }
  50% { transform: translateY(-18px) rotate(2deg); box-shadow: 0 60px 90px rgba(0, 0, 0, 0.4), inset 0 0 0 1px rgba(255, 255, 255, 0.12); }
}
@media (prefers-reduced-motion: reduce) {
  .hero .phone { animation: none; }
  .phone::after { animation: none; opacity: 0.7; }
}

/* The land: far mountains behind, forest in front, fading into the page */
.land { position: relative; height: 460px; margin-top: -150px; z-index: 2; pointer-events: none; }
.land img { position: absolute; left: 50%; width: max(1600px, 115vw); max-width: none; transform: translateX(-50%); }
.land .far { top: 0; filter: brightness(0.8); }
.land .mid { top: 90px; }
.land::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 110px;
  background: linear-gradient(180deg, transparent, var(--night));
}

/* Sections */
section.feature { padding: 110px 0; }
.feature-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.feature-grid.flip > :first-child { order: 2; }
.feature h2 { font-size: clamp(32px, 4.5vw, 48px); margin: 12px 0 16px; }
.feature p { color: var(--muted); font-size: 18px; margin: 0 0 14px; max-width: 480px; }
.ticks { list-style: none; padding: 0; margin: 20px 0 0; }
.ticks li { padding-left: 28px; position: relative; margin-bottom: 10px; }
.ticks li::before { content: ""; position: absolute; left: 0; top: 8px; width: 12px; height: 12px; border-radius: 4px; background: var(--cyan); transform: rotate(45deg); }

.band {
  padding: 70px 0;
  background: linear-gradient(135deg, rgba(95, 225, 255, 0.12), rgba(169, 139, 255, 0.14));
  border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
}
.band .wrap { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.band h3 { font-size: 20px; margin-bottom: 8px; }
.band p { color: var(--muted); margin: 0; }

.closing { text-align: center; padding: 110px 0 90px; }
.closing h2 { font-size: clamp(32px, 5vw, 52px); margin-bottom: 14px; }
.closing p { color: var(--muted); font-size: 18px; margin: 0 auto 28px; max-width: 520px; }
.closing .cta { justify-content: center; }

footer { border-top: 1px solid var(--line); padding: 26px 0 40px; color: var(--muted); font-size: 14px; }
footer .wrap { display: flex; flex-wrap: wrap; gap: 8px 22px; justify-content: space-between; }
footer a { color: var(--muted); }

/* Worlds and themes galleries */
section.gallery { padding: 90px 0; }
.gallery-head { text-align: center; max-width: 620px; margin: 0 auto 44px; }
.gallery-head h2 { font-size: clamp(32px, 4.5vw, 48px); margin: 12px 0 14px; }
.gallery-head p { color: var(--muted); font-size: 18px; margin: 0; }

.worlds { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.world { position: relative; margin: 0; border-radius: 24px; overflow: hidden; box-shadow: 0 24px 50px rgba(0, 0, 0, 0.45), inset 0 0 0 1px rgba(255, 255, 255, 0.08); }
.world img { width: 100%; aspect-ratio: 5 / 3; object-fit: cover; transition: transform 0.8s cubic-bezier(0.2, 0.8, 0.2, 1); }
.world:hover img { transform: scale(1.05); }
.world figcaption {
  position: absolute; left: 0; right: 0; bottom: 0; padding: 40px 22px 18px;
  background: linear-gradient(180deg, transparent, rgba(5, 6, 20, 0.85));
  display: flex; align-items: baseline; justify-content: space-between; gap: 12px; flex-wrap: wrap;
}
.world figcaption strong { font: 700 22px "Sora", sans-serif; }
.world figcaption span { color: var(--muted); font-size: 14px; }

/* Rows stay centred, so a group that doesn't fill the last row still looks balanced. */
.themes { display: flex; flex-wrap: wrap; justify-content: center; gap: 18px; max-width: 900px; margin: 0 auto; }
.theme { width: 160px; }
.classic-head { text-align: center; margin: 56px auto 22px; }
.classic-head h3 { font-size: 24px; margin-bottom: 6px; }
.classic-head p { color: var(--muted); margin: 0; }
.theme strong { display: block; margin-top: 10px; font: 600 15px "Sora", sans-serif; }
.theme span { display: block; color: var(--muted); font-size: 13px; line-height: 1.4; }
/* A tiny running-session screen painted in the theme's own colours. */
.theme-screen {
  position: relative; aspect-ratio: 9 / 13; border-radius: 18px; overflow: hidden;
  display: flex; flex-direction: column; align-items: center; justify-content: space-between; padding: 14px 10px 12px;
  background:
    radial-gradient(60% 40% at 85% 8%, var(--glow1), transparent 70%),
    radial-gradient(70% 45% at 10% 60%, var(--glow2), transparent 70%),
    linear-gradient(180deg, var(--g1), var(--g2) 55%, var(--g3));
  box-shadow: 0 14px 30px rgba(0, 0, 0, 0.35), inset 0 0 0 1px rgba(255, 255, 255, 0.1);
  transition: transform 0.3s cubic-bezier(0.2, 0.8, 0.3, 1.4);
}
.theme:hover .theme-screen { transform: translateY(-6px) rotate(-1.5deg); }
.theme-screen b { color: var(--mut); font: 600 9px "DM Sans", sans-serif; letter-spacing: 0.14em; text-transform: uppercase; }
.theme-screen i { width: 58%; aspect-ratio: 1; border-radius: 50%; border: 4px solid var(--a); box-shadow: 0 0 18px color-mix(in srgb, var(--a) 55%, transparent); }
.theme-screen em { font: 600 10px "DM Sans", sans-serif; font-style: normal; color: var(--on); background: var(--a); border-radius: 999px; padding: 6px 12px; width: 85%; text-align: center; }

/* Scroll reveal (reveal.js adds these classes; without it everything shows as normal) */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s ease, transform 0.9s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.feature .phone.reveal { transform: translateX(-70px) rotate(-5deg); }
.feature-grid.flip .phone.reveal { transform: translateX(70px) rotate(5deg); }
.reveal.in, .feature .phone.reveal.in { opacity: 1; transform: none; }

/* Privacy policy */
.doc-head {
  padding: 130px 0 50px;
  background: radial-gradient(800px 400px at 80% 0%, rgba(122, 86, 255, 0.35), transparent 70%), linear-gradient(180deg, #0b0e2b, var(--night));
}
.doc-head .wrap { max-width: 760px; }
.doc-head h1 { font-size: clamp(38px, 6vw, 60px); }
.doc-head p { color: var(--muted); margin: 10px 0 0; }
.doc { max-width: 760px; margin: 0 auto; padding: 10px 20px 80px; }
.doc .summary { background: rgba(95, 225, 255, 0.08); border: 1px solid rgba(95, 225, 255, 0.25); border-radius: 18px; padding: 18px 22px; color: var(--ink); }
.doc h2 { font-size: 22px; margin: 40px 0 10px; }
.doc p, .doc li { color: var(--muted); }
.doc li { margin-bottom: 8px; }
.doc strong { color: var(--ink); }

@media (max-width: 860px) {
  .hero { padding-top: 100px; }
  .hero-grid, .feature-grid { grid-template-columns: 1fr; text-align: center; }
  .hero p.lead, .feature p { margin-left: auto; margin-right: auto; }
  .cta { justify-content: center; }
  .feature-grid.flip > :first-child { order: 0; }
  /* Stacked on a phone, everything rises from below instead of sliding in from the side. */
  .feature .phone.reveal, .feature-grid.flip .phone.reveal { transform: translateY(50px) scale(0.96); }
  .ticks { display: inline-block; text-align: left; }
  .land { height: 320px; margin-top: -90px; }
  .land img { width: 1100px; }
  .land .mid { top: 60px; }
  .band .wrap { grid-template-columns: 1fr; text-align: center; }
  .worlds { grid-template-columns: 1fr; }
  section.gallery { padding: 60px 0; }
  .theme { width: calc(50% - 9px); }
  section.feature { padding: 70px 0; }
  .top nav a { margin-left: 16px; }
}

@media (max-width: 520px) {
  .brand { font-size: 15px; }
  .top nav a { margin-left: 14px; font-size: 14px; }
  .top nav a[href="#features"], .top nav a[href$="#contact"] { display: none; }
  .brand .by { font-size: 12px; white-space: nowrap; }
}