/* Cubestream site. Visual language borrowed from the app: hairlines, small radii,
   one accent color, monospaced labels for numbers and addresses. */
:root {
  --bg: #0a1013; --bg2: #0e1519; --card: #141c21; --stroke: #26333b; --stroke2: #34444e;
  --accent: #05b3e2; --text: #f4f4f7; --muted: rgba(255,255,255,.58); --faint: rgba(255,255,255,.38); --warn: #f08a24;
  --max: 1120px; --r: 6px; --ease: cubic-bezier(.2,.7,.2,1);
  --mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, monospace;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 84px; }
body { margin: 0; background: var(--bg); color: var(--text);
  font: 17px/1.62 -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; overflow-x: hidden; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }
img { max-width: 100%; display: block; }
::selection { background: rgba(5,179,226,.28); }
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 24px; }

/* ---------- header ---------- */
header.top { position: sticky; top: 0; z-index: 20; border-bottom: 1px solid transparent;
  transition: background .3s var(--ease), border-color .3s var(--ease), backdrop-filter .3s; }
header.top.scrolled { background: rgba(10,16,19,.86); border-bottom-color: var(--stroke);
  -webkit-backdrop-filter: blur(16px) saturate(1.2); backdrop-filter: blur(16px) saturate(1.2); }
header.top .wrap { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.brand { display: flex; align-items: center; gap: 11px; color: var(--text); font-weight: 650; font-size: 18px; letter-spacing: -.01em; }
.brand img { width: 36px; height: 36px; }
.brand:hover { text-decoration: none; }
nav.links { display: flex; align-items: center; gap: 30px; font-size: 14.5px; }
nav.links a { color: var(--muted); transition: color .2s; }
nav.links a:hover { color: var(--text); text-decoration: none; }

/* ---------- buttons ---------- */
.btn { display: inline-flex; align-items: center; justify-content: center; height: 48px; padding: 0 24px;
  border-radius: 8px; font-weight: 600; font-size: 15.5px; border: 1px solid transparent; cursor: pointer;
  transition: transform .2s var(--ease), background .2s, border-color .2s, filter .2s; }
.btn:hover { text-decoration: none; }
.btn.primary { background: var(--accent); color: #001118; }
.btn.primary:hover { filter: brightness(1.08); transform: translateY(-1px); }
.btn.ghost { border-color: var(--stroke2); color: var(--text); }
.btn.ghost:hover { border-color: var(--accent); color: var(--accent); }
.btn.small { height: 38px; padding: 0 16px; font-size: 14px; border-radius: 7px; }

/* Mac App Store button: "Coming soon" until the app is live (see enable-store.sh) */
.store-btn { white-space: nowrap; }
.store-btn .apple { width: 17px; height: 17px; margin-right: 9px; fill: currentColor; flex: none; }
.store-btn .l-live, .live-only { display: none; }
body:not(.store-live) .store-btn { pointer-events: none; cursor: default; background: transparent; color: #bfefff; border: 1px dashed rgba(5,179,226,.5); }
body.store-live .store-btn .l-live { display: inline; }
body.store-live .store-btn .l-soon, body.store-live .soon-only { display: none; }
body.store-live .live-only { display: block; }

/* ---------- hero ---------- */
.hero { position: relative; padding: 76px 0 0; }
.hero::before { content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image: linear-gradient(var(--stroke) 1px, transparent 1px), linear-gradient(90deg, var(--stroke) 1px, transparent 1px);
  background-size: 72px 72px; opacity: .22;
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 30% 0%, #000 0%, transparent 72%);
          mask-image: radial-gradient(ellipse 70% 60% at 30% 0%, #000 0%, transparent 72%); }
.hero .wrap { position: relative; }
.tag { display: inline-flex; align-items: center; gap: 10px; font: 600 12px/1 var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--muted); }
.tag::before { content: ""; width: 22px; height: 2px; background: var(--accent); display: block; }
h1 { font-size: clamp(40px, 6.4vw, 76px); line-height: 1.02; letter-spacing: -.035em; margin: 22px 0 24px; max-width: 880px; font-weight: 720; text-wrap: balance; }
.lead { color: var(--muted); font-size: clamp(18px, 2vw, 21px); max-width: 640px; margin: 0 0 34px; }
.cta { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; }
.specs { display: flex; flex-wrap: wrap; gap: 0; margin: 44px 0 0; padding: 0; list-style: none; border-top: 1px solid var(--stroke); max-width: 760px; }
.specs li { flex: 1 1 0; min-width: 150px; padding: 16px 20px 0 0; font: 12.5px/1.5 var(--mono); color: var(--muted); letter-spacing: .02em; }
.specs b { display: block; color: var(--text); font-weight: 600; font-size: 13px; letter-spacing: .06em; text-transform: uppercase; margin-bottom: 2px; }

.stage { margin-top: 64px; padding-bottom: 110px; }
.frame { border-radius: 12px; overflow: hidden; border: 1px solid var(--stroke2); background: #0a1013;
  box-shadow:
    0 0 0 1px rgba(255,255,255,.025),
    0 2px 4px rgba(0,0,0,.22),
    0 18px 36px -10px rgba(0,0,0,.45),
    0 56px 110px -34px rgba(0,0,0,.6),
    0 70px 140px -50px rgba(5,179,226,.16);
  transform: translateY(calc(var(--p, 0) * -22px)) scale(calc(.985 + var(--p, 0) * .015)); transform-origin: 50% 0;
  will-change: transform; }
.frame .bar { height: 32px; background: #1c262d; display: flex; align-items: center; gap: 7px; padding: 0 13px; border-bottom: 1px solid var(--stroke); }
.frame .bar i { width: 11px; height: 11px; border-radius: 50%; display: block; background: #34444e; }
.frame .bar i:nth-child(1) { background: #ff5f57; } .frame .bar i:nth-child(2) { background: #febc2e; }
.frame img { width: 100%; height: auto; }

/* ---------- sections ---------- */
section { padding: 112px 0; position: relative; }
section.alt { background: var(--bg2); border-top: 1px solid var(--stroke); border-bottom: 1px solid var(--stroke); }
.head { display: grid; grid-template-columns: 1fr 1fr; gap: 24px 64px; align-items: end; margin-bottom: 56px; }
h2 { font-size: clamp(30px, 4.2vw, 48px); line-height: 1.08; letter-spacing: -.028em; margin: 14px 0 0; font-weight: 700; text-wrap: balance; }
.sub { color: var(--muted); margin: 0; max-width: 520px; }

/* spec list (features) */
.list { border-top: 1px solid var(--stroke); }
.item { display: grid; grid-template-columns: 72px 300px 1fr; gap: 0 24px; padding: 28px 0; border-bottom: 1px solid var(--stroke);
  transition: background .3s, padding .3s var(--ease); position: relative; }
.item::before { content: ""; position: absolute; left: -24px; top: 0; bottom: 0; width: 2px; background: var(--accent); transform: scaleY(0); transform-origin: top; transition: transform .35s var(--ease); }
.item:hover::before { transform: scaleY(1); }
.item .n { font: 600 13px/1.9 var(--mono); color: var(--faint); letter-spacing: .06em; }
.item h3 { margin: 0; font-size: 21px; line-height: 1.3; letter-spacing: -.015em; font-weight: 640; }
.item p { margin: 0; color: var(--muted); max-width: 560px; }

/* steps */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; border-top: 1px solid var(--stroke); position: relative; }
.steps::before { content: ""; position: absolute; left: 0; top: -1px; height: 2px; width: 100%; background: var(--accent);
  transform: scaleX(0); transform-origin: left; transition: transform 1.4s var(--ease) .15s; }
.steps.in::before { transform: scaleX(1); }
.step { padding: 28px 28px 0 0; }
.step .n { font: 600 12px/1 var(--mono); letter-spacing: .1em; color: var(--accent); text-transform: uppercase; }
.step h3 { margin: 14px 0 8px; font-size: 20px; letter-spacing: -.012em; font-weight: 640; }
.step p { margin: 0; color: var(--muted); font-size: 15.5px; }

/* feature rows with screenshots */
.row { display: grid; grid-template-columns: 5fr 7fr; gap: 72px; align-items: center; }
.row.flip { grid-template-columns: 7fr 5fr; }
.row.flip .text { order: 2; }
.row + .row { margin-top: 120px; }
.text .tag { margin-bottom: 18px; }
.text h3 { font-size: clamp(26px, 3vw, 36px); line-height: 1.12; margin: 0 0 16px; letter-spacing: -.025em; font-weight: 690; text-wrap: balance; }
.text p { color: var(--muted); margin: 0 0 18px; }
.text ul { margin: 0; padding: 0; list-style: none; }
.text li { padding: 9px 0 9px 16px; border-left: 2px solid var(--stroke2); color: var(--muted); font-size: 16px; transition: border-color .3s, color .3s; }
.text li + li { margin-top: 2px; }
.text li:hover { border-left-color: var(--accent); color: var(--text); }
.shot { border-radius: 10px; overflow: hidden; border: 1px solid var(--stroke2); background: #0a1013;
  box-shadow: 0 0 0 1px rgba(255,255,255,.02), 0 2px 4px rgba(0,0,0,.2), 0 16px 32px -10px rgba(0,0,0,.4), 0 44px 90px -30px rgba(0,0,0,.5), 0 60px 110px -50px rgba(5,179,226,.12); }
.shot img { width: 100%; height: auto; transition: transform 1.2s var(--ease); }
.shot:hover img { transform: scale(1.015); }

/* three columns */
.cols { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0 48px; }
.col { border-top: 1px solid var(--stroke); padding-top: 26px; position: relative; }
.col::before { content: ""; position: absolute; top: -1px; left: 0; width: 44px; height: 2px; background: var(--accent); }
.col .n { font: 600 12px/1 var(--mono); letter-spacing: .1em; color: var(--faint); }
.col h3 { margin: 14px 0 10px; font-size: 20px; letter-spacing: -.012em; font-weight: 640; }
.col p { margin: 0; color: var(--muted); font-size: 16px; }

.panels { display: grid; grid-template-columns: 1fr 1fr; gap: 0; margin-top: 72px; border: 1px solid var(--stroke); border-radius: 8px; overflow: hidden; background: var(--card); }
.panel { padding: 30px 32px; }
.panel + .panel { border-left: 1px solid var(--stroke); }
.panel h4 { margin: 0 0 14px; font: 600 12px/1 var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--accent); }
.panel ul { margin: 0; padding: 0; list-style: none; }
.panel li { padding: 11px 0; border-top: 1px solid var(--stroke); color: var(--muted); font-size: 16px; }
.panel li:first-child { border-top: 0; }
.fine { color: var(--faint); font-size: 14px; margin: 22px 0 0; }

/* faq */
.faq { border-top: 1px solid var(--stroke); }
details { border-bottom: 1px solid var(--stroke); }
summary { cursor: pointer; font-weight: 600; font-size: 19px; letter-spacing: -.01em; padding: 24px 0; list-style: none; display: flex; justify-content: space-between; align-items: center; gap: 24px; transition: color .2s; }
summary:hover { color: var(--accent); }
summary::-webkit-details-marker { display: none; }
summary::after { content: ""; flex: none; width: 14px; height: 14px; background:
  linear-gradient(var(--accent), var(--accent)) center / 100% 2px no-repeat,
  linear-gradient(var(--accent), var(--accent)) center / 2px 100% no-repeat; transition: transform .35s var(--ease); }
details[open] summary::after { transform: rotate(135deg); }
details.closing summary::after { transform: none; }
details .a { overflow: hidden; }
details p { color: var(--muted); margin: 0 0 26px; max-width: 760px; }

/* final */
.final { padding: 120px 0; border-top: 1px solid var(--stroke); }
.final h2 { max-width: 760px; margin-top: 0; }
.final .sub { margin: 18px 0 32px; }

footer { border-top: 1px solid var(--stroke); padding: 36px 0 52px; color: var(--muted); font-size: 14px; }
footer .wrap { display: flex; flex-wrap: wrap; gap: 18px 36px; justify-content: space-between; align-items: center; }
footer .fl { display: flex; gap: 24px; flex-wrap: wrap; }
footer a { color: var(--muted); } footer a:hover { color: var(--text); text-decoration: none; }
.disclaimer { max-width: var(--max); margin: 22px auto 0; padding: 0 24px; color: var(--faint); font-size: 13px; }

/* ---------- legal pages ---------- */
.legal { padding: 56px 0 104px; width: 100%; }
.legal h1 { font-size: clamp(34px, 4.4vw, 48px); letter-spacing: -.03em; margin: 0 0 8px; }
.legal .meta { color: var(--faint); font: 13px var(--mono); letter-spacing: .04em; margin: 0 0 40px; }
.legal h2 { font-size: 20px; letter-spacing: -.01em; margin: 40px 0 10px; padding-top: 22px; border-top: 1px solid var(--stroke); }
.legal h3 { font-size: 17px; margin: 24px 0 6px; }
.legal p, .legal li { color: rgba(255,255,255,.8); font-size: 16px; }
.legal ul { padding-left: 22px; }

/* ---------- motion ---------- */
.js .reveal { opacity: 0; transform: translateY(18px); filter: blur(3px);
  transition: opacity .8s var(--ease), transform .9s var(--ease), filter .8s var(--ease); transition-delay: var(--d, 0s); }
.js .reveal.in { opacity: 1; transform: none; filter: none; }
.js .wipe img { clip-path: inset(0 0 100% 0); transition: clip-path 1.1s var(--ease), transform 1.2s var(--ease); transition-delay: var(--d, 0s), 0s; }
.js .wipe.in img { clip-path: inset(0 0 0 0); }
.js .hero .rise { opacity: 0; transform: translateY(22px); animation: rise .9s var(--ease) forwards; animation-delay: var(--d, 0s); }
@keyframes rise { to { opacity: 1; transform: none; } }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .js .reveal, .js .hero .rise { opacity: 1 !important; transform: none !important; filter: none !important; animation: none !important; transition: none !important; }
  .js .wipe img { clip-path: none !important; transition: none !important; }
  .frame { transform: none !important; }
  .steps::before { transform: none !important; transition: none !important; }
}

/* ---------- responsive ---------- */
@media (max-width: 960px) {
  section { padding: 80px 0; }
  .head { grid-template-columns: 1fr; gap: 14px; margin-bottom: 40px; }
  .item { grid-template-columns: 48px 1fr; gap: 6px 16px; }
  .item p { grid-column: 2; }
  .steps { grid-template-columns: 1fr 1fr; row-gap: 36px; }
  .row, .row.flip { grid-template-columns: 1fr; gap: 30px; }
  .row.flip .text { order: 0; }
  .row + .row { margin-top: 84px; }
  .cols { grid-template-columns: 1fr; gap: 36px; }
  .panels { grid-template-columns: 1fr; }
  .panel + .panel { border-left: 0; border-top: 1px solid var(--stroke); }
  nav.links a.hide-sm { display: none; }
  .hero { padding-top: 48px; }
  .item::before { display: none; }
}
@media (max-width: 560px) {
  .steps { grid-template-columns: 1fr; }
  .specs li { flex-basis: 100%; }
}