/*
 * Shared bones for every app page: layout, frames, gallery, lightbox, install steps.
 * Each page sets its own look through the variables below (and adds its own hero).
 */
:root {
  --bg: #0b0b0d;
  --bg-2: #121216;
  --surface: #17171c;
  --text: #f4f4f5;
  --muted: #a1a1aa;
  --line: rgba(255, 255, 255, 0.09);
  --accent: #ffe45c;
  --accent-ink: #141414;
  --accent-2: #8b5cf6;
  --radius: 18px;
  --card-border: 1px solid var(--line);
  --card-shadow: none;
  --btn-radius: 14px;
  --btn-shadow: 0 10px 30px -12px var(--accent);
  --font-display: system-ui, sans-serif;
  --font-body: system-ui, sans-serif;
  --display-weight: 800;
  --display-tracking: -0.035em;
  --max: 1200px;
}

* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.55 var(--font-body);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img {
  display: block;
  max-width: 100%;
}
a {
  color: inherit;
}
h1,
h2,
h3 {
  font-family: var(--font-display);
  font-weight: var(--display-weight);
  letter-spacing: var(--display-tracking);
  line-height: 1.02;
  margin: 0;
}
p {
  margin: 0;
}
.wrap {
  width: min(var(--max), 100% - 40px);
  margin-inline: auto;
}
.icon {
  width: 1.15em;
  height: 1.15em;
  flex: none;
  stroke: currentColor;
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.mono {
  font-family: ui-monospace, "SF Mono", "JetBrains Mono", Consolas, monospace;
}

/* ── Navigation ───────────────────────────────────────────────────────── */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(14px) saturate(1.4);
  background: color-mix(in srgb, var(--bg) 72%, transparent);
  border-bottom: 1px solid var(--line);
}
.nav .wrap {
  display: flex;
  align-items: center;
  gap: 20px;
  height: 68px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font: var(--display-weight) 21px var(--font-display);
  letter-spacing: -0.02em;
  text-decoration: none;
}
.brand img {
  width: 34px;
  height: 34px;
  border-radius: 9px;
}
.nav-links {
  display: flex;
  gap: 4px;
  margin-left: auto;
}
.nav-links a {
  padding: 8px 12px;
  border-radius: 10px;
  text-decoration: none;
  color: var(--muted);
  font-weight: 600;
  font-size: 15px;
}
.nav-links a:hover {
  color: var(--text);
  background: var(--line);
}
.back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--muted);
  text-decoration: none;
  font-size: 14px;
  font-weight: 600;
}
.back:hover {
  color: var(--text);
}

/* ── Buttons ──────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 52px;
  padding: 0 24px;
  border-radius: var(--btn-radius);
  border: var(--card-border);
  background: var(--surface);
  color: var(--text);
  font: 700 16.5px var(--font-body);
  text-decoration: none;
  cursor: pointer;
  transition:
    transform 0.15s,
    box-shadow 0.2s,
    filter 0.2s;
}
.btn:hover {
  transform: translateY(-2px);
}
.btn:active {
  transform: translateY(1px);
}
.btn.primary {
  background: var(--accent);
  color: var(--accent-ink);
  border-color: transparent;
  box-shadow: var(--btn-shadow);
}
.btn.primary:hover {
  filter: brightness(1.06);
}
.btn.small {
  min-height: 40px;
  padding: 0 16px;
  font-size: 15px;
}
.btn .sub {
  display: block;
  font-size: 12px;
  font-weight: 600;
  opacity: 0.72;
  margin-top: -2px;
}
.btn .btn-text {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  line-height: 1.2;
}

/* ── Hero (shared parts; each page lays out its own) ─────────────────── */
.hero {
  position: relative;
  isolation: isolate;
  padding: 72px 0 56px;
  overflow: hidden;
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border-radius: 999px;
  border: var(--card-border);
  background: var(--surface);
  font-size: 13.5px;
  font-weight: 700;
  letter-spacing: 0.02em;
}
.hero h1 {
  font-size: clamp(46px, 7vw, 88px);
  margin: 20px 0 18px;
}
.lead {
  font-size: clamp(18px, 2vw, 21px);
  color: var(--muted);
  max-width: 560px;
}
.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}
.fine {
  margin-top: 14px;
  font-size: 13.5px;
  color: var(--muted);
}
.platform-note {
  display: none;
  margin-top: 14px;
  padding: 10px 14px;
  border-radius: 12px;
  border: var(--card-border);
  background: var(--surface);
  font-size: 14px;
  max-width: 520px;
}
.platform-note.show {
  display: flex;
  gap: 10px;
  align-items: flex-start;
}

/* ── Facts strip ──────────────────────────────────────────────────────── */
.facts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: 1px;
  border-radius: var(--radius);
  overflow: hidden;
  border: var(--card-border);
  background: var(--line);
  box-shadow: var(--card-shadow);
}
.fact {
  padding: 20px 22px;
  background: var(--surface);
}
.fact b {
  display: block;
  font: var(--display-weight) 26px var(--font-display);
  letter-spacing: -0.02em;
}
.fact span {
  font-size: 14px;
  color: var(--muted);
}

/* ── Sections ─────────────────────────────────────────────────────────── */
section.block {
  padding: 96px 0 0;
}
.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 40px;
}
.section-head h2 {
  font-size: clamp(36px, 5vw, 58px);
  max-width: 720px;
}
.section-head p {
  max-width: 420px;
  color: var(--muted);
}
.kicker {
  display: block;
  margin-bottom: 14px;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
}

.features {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 18px;
}
.feature {
  padding: 26px;
  border-radius: var(--radius);
  border: var(--card-border);
  background: var(--surface);
  box-shadow: var(--card-shadow);
  transition: transform 0.25s;
}
.feature:hover {
  transform: translateY(-4px);
}
.feature .f-icon {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border-radius: 14px;
  background: var(--accent);
  color: var(--accent-ink);
  margin-bottom: 18px;
  font-size: 22px;
}
.feature:nth-child(3n + 2) .f-icon {
  background: var(--accent-2);
  color: var(--accent-2-ink, #fff);
}
.feature h3 {
  font-size: 22px;
  letter-spacing: -0.015em;
  margin-bottom: 8px;
}
.feature p {
  color: var(--muted);
  font-size: 16px;
}
.feature.star {
  grid-column: span 2;
  background: var(--star-bg, var(--surface));
}
@media (max-width: 760px) {
  .feature.star {
    grid-column: auto;
  }
}

/* ── Frames ───────────────────────────────────────────────────────────── */
.phone {
  position: relative;
  width: 260px;
  aspect-ratio: 390 / 844;
  padding: 10px;
  border-radius: 44px;
  background: #0d0d10;
  box-shadow:
    0 0 0 2px #2a2a31,
    0 40px 80px -30px rgba(0, 0, 0, 0.65);
  flex: none;
}
.phone::before {
  content: "";
  position: absolute;
  top: 18px;
  left: 50%;
  transform: translateX(-50%);
  width: 76px;
  height: 22px;
  border-radius: 12px;
  background: #0d0d10;
  z-index: 2;
}
.phone img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top;
  border-radius: 34px;
}
.window {
  border-radius: 14px;
  overflow: hidden;
  background: #1b1b1f;
  box-shadow:
    0 0 0 1px rgba(255, 255, 255, 0.08),
    0 50px 100px -40px rgba(0, 0, 0, 0.75);
}
.window .bar {
  display: flex;
  align-items: center;
  gap: 7px;
  height: 34px;
  padding: 0 14px;
  background: #26262c;
}
.window .bar i {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: #4b4b55;
}
.window .bar span {
  margin-left: 10px;
  font: 600 12.5px var(--font-body);
  color: #9b9ba6;
}
.window img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  object-position: top left;
  background: #111114;
}

/* ── Gallery ──────────────────────────────────────────────────────────── */
.gallery {
  display: flex;
  gap: 22px;
  overflow-x: auto;
  padding: 10px 4px 34px;
  scroll-snap-type: x mandatory;
  scrollbar-width: thin;
}
.gallery figure {
  margin: 0;
  scroll-snap-align: start;
  flex: none;
}
.gallery figure button {
  padding: 0;
  border: 0;
  background: none;
  cursor: zoom-in;
  display: block;
}
.gallery figcaption {
  margin-top: 14px;
  font-size: 15px;
  color: var(--muted);
  max-width: 280px;
}
.gallery.desktop figure {
  width: min(760px, 86vw);
}
.gallery.desktop figcaption {
  max-width: none;
}
.gallery-nav {
  display: flex;
  gap: 8px;
}
.gallery-nav button {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  border: var(--card-border);
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
}

/* ── Install ──────────────────────────────────────────────────────────── */
.install {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 22px;
}
@media (max-width: 900px) {
  .install {
    grid-template-columns: 1fr;
  }
}
.steps {
  counter-reset: step;
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.steps li {
  counter-increment: step;
  display: flex;
  gap: 16px;
  padding: 20px;
  border-radius: var(--radius);
  border: var(--card-border);
  background: var(--surface);
  box-shadow: var(--card-shadow);
}
.steps li::before {
  content: counter(step);
  display: grid;
  place-items: center;
  flex: none;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--accent);
  color: var(--accent-ink);
  font: 800 16px var(--font-display);
}
.steps b {
  display: block;
  margin-bottom: 2px;
}
.steps span {
  color: var(--muted);
  font-size: 15.5px;
}
.side-card {
  padding: 26px;
  border-radius: var(--radius);
  border: var(--card-border);
  background: var(--surface);
  box-shadow: var(--card-shadow);
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.side-card h3 {
  font-size: 24px;
}
.req {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.req li {
  display: flex;
  gap: 10px;
  color: var(--muted);
  font-size: 15.5px;
}
.req li .icon {
  color: var(--accent);
  margin-top: 4px;
}
.hash {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  border-radius: 12px;
  background: var(--bg-2);
  border: var(--card-border);
  font-size: 12px;
  word-break: break-all;
  color: var(--muted);
}
.hash button {
  flex: none;
  border: 0;
  border-radius: 8px;
  padding: 6px 10px;
  background: var(--line);
  color: var(--text);
  font: 700 12px var(--font-body);
  cursor: pointer;
}
.stack {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.stack span {
  padding: 6px 12px;
  border-radius: 999px;
  border: var(--card-border);
  font-size: 13.5px;
  font-weight: 600;
}

/* ── Final call ───────────────────────────────────────────────────────── */
.final {
  margin: 110px 0 0;
  padding: 70px 40px;
  border-radius: calc(var(--radius) + 10px);
  text-align: center;
  background: var(--final-bg, var(--surface));
  border: var(--card-border);
  box-shadow: var(--card-shadow);
  position: relative;
  overflow: hidden;
}
.final h2 {
  font-size: clamp(40px, 6vw, 72px);
  margin-bottom: 14px;
}
.final p {
  color: var(--muted);
  margin: 0 auto;
  max-width: 520px;
}
.final .cta-row {
  justify-content: center;
}

/* ── Footer ───────────────────────────────────────────────────────────── */
.foot {
  margin-top: 80px;
  padding: 36px 0 50px;
  border-top: 1px solid var(--line);
}
.foot .wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  align-items: center;
  justify-content: space-between;
  color: var(--muted);
  font-size: 14px;
}
.others {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.others a {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 6px 11px 6px 6px;
  border-radius: 999px;
  border: 1px solid var(--line);
  text-decoration: none;
  font-weight: 600;
  color: var(--text);
}
.others img {
  width: 22px;
  height: 22px;
  border-radius: 6px;
}

/* ── Lightbox ─────────────────────────────────────────────────────────── */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 40px;
  background: rgba(5, 5, 8, 0.88);
  backdrop-filter: blur(8px);
  cursor: zoom-out;
}
.lightbox.open {
  display: flex;
  animation: fade 0.2s;
}
.lightbox img {
  max-width: 100%;
  max-height: 100%;
  border-radius: 12px;
  box-shadow: 0 40px 100px rgba(0, 0, 0, 0.6);
}
@keyframes fade {
  from {
    opacity: 0;
  }
}

/* ── Reveal on scroll ─────────────────────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition:
    opacity 0.7s ease,
    transform 0.7s cubic-bezier(0.2, 1, 0.3, 1);
}
.reveal.in {
  opacity: 1;
  transform: none;
}

@media (max-width: 760px) {
  .nav-links {
    display: none;
  }
  .nav .wrap {
    gap: 12px;
  }
  .back span {
    display: none;
  }
  .brand {
    font-size: 18px;
    margin-right: auto;
  }
  .brand img {
    width: 28px;
    height: 28px;
  }
  .hero {
    padding-top: 44px;
  }
  section.block {
    padding-top: 72px;
  }
  .final {
    padding: 50px 22px;
  }
}
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto !important;
  }
  .reveal {
    opacity: 1;
    transform: none;
  }
}