/* Umer OS website. Concept: the phone after Umer OS — dark, quiet, almost empty, with one warm
   "daylight" accent for the things worth looking up for. Dark first, light for light-mode phones. */
/* v2 "Forest Focus": deep green with mint highlights. Green and blue are linked to creative
   thinking (Mehta & Zhu 2009; Lichtenfeld et al. 2012). Dark first, light for light-mode phones. */
:root {
  --bg: #0d2420;
  --bg-2: #163a33;
  --bg-3: #1e4a40;
  --ink: #e6f4ee;
  --dim: #a3c9b9;
  --line: #2b5247;
  --sun: #6ee7b7;        /* the one accent: mint */
  --sun-ink: #0d2420;
  --band: #e6f4ee;       /* light bands between dark sections */
  --band-ink: #0d2420;
  --band-dim: #33584a;
  --band-card: #ffffff;
  --band-link: #0f7a55;
  --good: #6ee7b7;
  --bad: #ff8a80;
  --f-display: "Sora", "Arial Narrow", Arial, sans-serif;
  --f-body: "Manrope", system-ui, -apple-system, "Segoe UI", sans-serif;
  --f-mono: "IBM Plex Mono", ui-monospace, Menlo, Consolas, monospace;
  --wrap: 1140px;
  color-scheme: dark;
}
@media (prefers-color-scheme: light) {
  :root {
    --bg: #f2f9f5; --bg-2: #ffffff; --bg-3: #dcefe6; --ink: #0d2420; --dim: #33584a; --line: #cfe3da;
    --sun: #0f7a55; --sun-ink: #ffffff; --band: #0d2420; --band-ink: #e6f4ee; --band-dim: #a3c9b9;
    --band-card: #163a33; --band-link: #6ee7b7; --good: #0f7a55; --bad: #b3261e; color-scheme: light;
  }
}
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font: 17px/1.6 var(--f-body);
  -webkit-font-smoothing: antialiased;
}
img, svg { max-width: 100%; }
a { color: inherit; }
a:focus-visible, button:focus-visible, input:focus-visible { outline: 2px solid var(--sun); outline-offset: 3px; }
.wrap {
  max-width: var(--wrap); margin: 0 auto;
  padding-left: max(20px, env(safe-area-inset-left, 0px));
  padding-right: max(20px, env(safe-area-inset-right, 0px));
}

/* Top bar */
.top { border-bottom: 1px solid var(--line); }
.top .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding-block: 16px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; font: 700 19px/1 var(--f-display); letter-spacing: -.01em; }
.brand svg { width: 28px; height: 28px; }
.nav { display: flex; align-items: center; gap: 20px; font-size: 15px; }
.nav a { text-decoration: none; color: var(--dim); }
.nav a:hover { color: var(--ink); }
.nav a.btn { color: var(--sun-ink); }
@media (max-width: 560px) { .nav a.hide-sm { display: none; } }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  background: var(--sun); color: var(--sun-ink); border: 0; border-radius: 999px;
  padding: 14px 24px; font: 700 16px/1 var(--f-body); text-decoration: none; cursor: pointer;
  min-height: 48px; transition: transform .15s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn.small { padding: 10px 16px; min-height: 40px; font-size: 14px; }
.btn.ghost { background: transparent; color: var(--ink); border: 1px solid var(--line); }
.btn:disabled { opacity: .6; cursor: default; transform: none; }

/* Type */
h1, h2, h3 { font-family: var(--f-display); letter-spacing: -.025em; text-wrap: balance; margin: 0; }
h1 { font-size: clamp(42px, 8vw, 84px); line-height: .98; font-weight: 700; }
h2 { font-size: clamp(32px, 5vw, 52px); line-height: 1.02; font-weight: 700; }
h3 { font-size: 22px; line-height: 1.2; font-weight: 600; letter-spacing: -.01em; }
.eyebrow { font: 500 13px/1 var(--f-mono); text-transform: uppercase; letter-spacing: .12em; color: var(--sun); margin: 0 0 18px; }
.lede { font-size: clamp(18px, 2.2vw, 21px); color: var(--dim); max-width: 34em; margin: 22px 0 0; }
.muted { color: var(--dim); }
.sun { color: var(--sun); }

/* Sections */
section { padding-block: clamp(64px, 10vw, 120px); border-bottom: 1px solid var(--line); }
section > .wrap > h2 + .lede { margin-top: 18px; }

/* Hero */
.hero { padding-block: clamp(48px, 8vw, 96px); }
.hero .wrap { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(0, .75fr); gap: 48px; align-items: center; }
@media (max-width: 820px) { .hero .wrap { grid-template-columns: minmax(0, 1fr); } .hero .phone { width: min(200px, 60%); } }
.hero h1 s { text-decoration-thickness: .08em; text-decoration-color: var(--sun); }
.cta-row { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; margin-top: 32px; }
.fine { font: 13px/1.5 var(--f-mono); color: var(--dim); margin-top: 14px; }

/* The phone: an endless feed that switches off */
.phone {
  justify-self: center; width: min(280px, 100%); aspect-ratio: 9 / 18.5;
  border: 1px solid var(--line); border-radius: 38px; padding: 12px; background: var(--bg-2);
  position: relative; overflow: hidden;
}
.screen { position: absolute; inset: 12px; border-radius: 28px; overflow: hidden; background: var(--bg); }
.feed { display: flex; flex-direction: column; gap: 10px; padding: 14px; animation: scroll 9s linear infinite; }
.feed i { display: block; height: 120px; border-radius: 14px; background: var(--line); flex: none; }
.feed i:nth-child(3n) { height: 70px; }
.feed i:nth-child(4n) { height: 160px; }
@keyframes scroll { to { transform: translateY(-50%); } }
.off {
  position: absolute; inset: 0; display: flex; flex-direction: column; justify-content: center; align-items: center;
  gap: 10px; text-align: center; padding: 24px; background: var(--bg); opacity: 0;
  animation: switchoff 9s ease-in-out infinite;
}
.off b { font: 700 40px/1 var(--f-display); letter-spacing: -.02em; }
.off span { font: 13px/1.5 var(--f-mono); color: var(--dim); }
@keyframes switchoff { 0%, 55% { opacity: 0; } 62%, 95% { opacity: 1; } 100% { opacity: 0; } }
@media (prefers-reduced-motion: reduce) {
  .feed { animation: none; }
  .off { animation: none; opacity: 1; }
}

/* Evidence */
.studies { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: 20px; overflow: hidden; margin-top: 48px; }
@media (min-width: 721px) { .studies.three { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
@media (max-width: 720px) { .studies { grid-template-columns: minmax(0, 1fr); } }
.study { background: var(--bg); padding: 28px; display: flex; flex-direction: column; gap: 12px; min-width: 0; }
.study .num { font: 700 clamp(40px, 6vw, 60px)/1 var(--f-display); letter-spacing: -.03em; color: var(--sun); }
.study p { margin: 0; }
.cite { font: 12.5px/1.5 var(--f-mono); color: var(--dim); margin-top: auto; }
.cite a { color: var(--dim); text-underline-offset: 3px; }
.cite a:hover { color: var(--ink); }

/* Boredom */
.bored .wrap { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 56px; align-items: start; }
@media (max-width: 820px) { .bored .wrap { grid-template-columns: minmax(0, 1fr); gap: 32px; } }
.facts { display: flex; flex-direction: column; gap: 28px; }
.fact { border-left: 2px solid var(--sun); padding-left: 20px; }
.fact p { margin: 0 0 8px; font-size: 19px; }

/* Features */
.features { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 40px; margin-top: 48px; }
@media (max-width: 820px) { .features { grid-template-columns: minmax(0, 1fr); gap: 32px; } }
.feature p { margin: 10px 0 0; color: var(--dim); }
.feature .tag { font: 500 12px/1 var(--f-mono); color: var(--sun); letter-spacing: .08em; text-transform: uppercase; display: block; margin-bottom: 14px; }

/* Keeps working / blocked */
.keep { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; margin-top: 48px; }
@media (max-width: 600px) { .keep { grid-template-columns: minmax(0, 1fr); } }
.keep > div { border: 1px solid var(--line); border-radius: 18px; padding: 24px; background: var(--bg-2); }
.keep ul { list-style: none; margin: 14px 0 0; padding: 0; display: grid; gap: 8px; }
.keep li { display: flex; gap: 10px; color: var(--dim); }
.keep .yes li::before { content: "✓"; color: var(--good); font-weight: 700; }
.keep .no li::before { content: "✕"; color: var(--bad); font-weight: 700; }

/* Price */
.prices { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; margin-top: 40px; }
@media (max-width: 720px) { .prices { grid-template-columns: minmax(0, 1fr); } }
.price { border: 1px solid var(--line); border-radius: 18px; padding: 24px; background: var(--bg-2); }
.price.hl { border-color: var(--sun); }
.price b { display: block; font: 700 36px/1 var(--f-display); letter-spacing: -.02em; margin: 10px 0 8px; }
.price span { color: var(--dim); font-size: 15px; }
.price .k { font: 500 12px/1 var(--f-mono); text-transform: uppercase; letter-spacing: .1em; color: var(--dim); }
.price.hl .k { color: var(--sun); }

.prices + .fine a { color: var(--sun); }
.band { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 12px; margin-top: 32px;
  padding: 20px 24px; border: 1px solid var(--line); border-radius: 18px; text-decoration: none; color: var(--dim); }
.band b { color: var(--ink); margin-right: 6px; }
.band:hover { border-color: var(--sun); }

/* Final CTA + beta form */
.final { text-align: left; }
.form { display: flex; flex-direction: column; gap: 14px; max-width: 520px; margin-top: 32px; }
.form label { font-size: 14px; color: var(--dim); display: flex; flex-direction: column; gap: 6px; }
.form input[type=email], .form input[type=text] {
  font: 17px var(--f-body); color: var(--ink); background: var(--bg-2); border: 1px solid var(--line);
  border-radius: 12px; padding: 14px 16px; width: 100%;
}
.form .trap { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.msg { font-size: 15px; min-height: 1.4em; margin: 0; }
.msg.ok { color: var(--good); }
.msg.bad { color: var(--bad); }
.steps { display: grid; gap: 18px; margin: 40px 0 0; padding: 0; list-style: none; counter-reset: s; max-width: 640px; }
.steps li { counter-increment: s; display: grid; grid-template-columns: 40px minmax(0, 1fr); gap: 12px; }
.steps li::before { content: counter(s); font: 700 22px/1.2 var(--f-display); color: var(--sun); }
.steps b { display: block; }
.steps span { color: var(--dim); }

/* Blog */
.posts { display: flex; flex-direction: column; margin-top: 40px; border-top: 1px solid var(--line); }
.post-link { display: grid; grid-template-columns: 140px minmax(0, 1fr); gap: 20px; padding: 26px 0; border-bottom: 1px solid var(--line); text-decoration: none; }
@media (max-width: 600px) { .post-link { grid-template-columns: minmax(0, 1fr); gap: 6px; } }
.post-link time { font: 13px/1.8 var(--f-mono); color: var(--dim); }
.post-link h3 { margin-bottom: 6px; }
.post-link:hover h3 { color: var(--sun); }
.post-link p { margin: 0; color: var(--dim); }
article.post { max-width: 680px; margin: 0 auto; }
article.post .meta { font: 13px var(--f-mono); color: var(--dim); margin: 18px 0 40px; }
article.post h1 { font-size: clamp(36px, 6vw, 56px); }
article.post h2 { font-size: 28px; margin: 48px 0 12px; }
article.post p, article.post li { font-size: 18px; line-height: 1.7; }
article.post a { color: var(--sun); text-underline-offset: 3px; }
article.post blockquote { margin: 28px 0; padding-left: 20px; border-left: 2px solid var(--sun); color: var(--dim); }
.post-cta { margin-top: 56px; padding: 28px; border: 1px solid var(--line); border-radius: 18px; background: var(--bg-2); }
.post-cta p { margin: 0 0 16px; }

/* Plain pages (privacy, terms) */
.doc { max-width: 720px; }
.doc h1 { font-size: clamp(36px, 6vw, 52px); margin-bottom: 12px; }
.doc h2 { font-size: 24px; margin: 40px 0 10px; }
.doc p, .doc li { color: var(--ink); }
.doc a { color: var(--sun); }

/* Footer */
footer { padding-block: 48px; color: var(--dim); font-size: 14px; }
footer .wrap { display: flex; flex-wrap: wrap; gap: 16px 28px; justify-content: space-between; align-items: center; }
footer nav { display: flex; flex-wrap: wrap; gap: 20px; }
footer a { text-decoration: none; }
footer a:hover { color: var(--ink); }

/* ---------- Home page v2 (design D) ---------- */
.h-hero .wrap { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 48px; align-items: center; }
@media (max-width: 900px) { .h-hero .wrap { grid-template-columns: minmax(0, 1fr); } }
.h-hero h1 { font-size: clamp(40px, 6vw, 60px); line-height: 1.04; font-weight: 800; }
.picks { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 24px; }
.pick { min-width: 52px; min-height: 52px; border-radius: 12px; border: 2px solid var(--line); background: transparent;
  color: var(--ink); font: 700 18px var(--f-display); cursor: pointer; }
.pick[aria-pressed="true"] { background: var(--sun); border-color: var(--sun); color: var(--sun-ink); }
.daybar { display: flex; gap: 4px; margin-top: 22px; }
.daybar i { flex: 1; height: 40px; border-radius: 6px; background: var(--bg-3); }
.daybar i.on { background: var(--sun); }
.result { background: var(--bg-2); border-radius: 22px; padding: 36px; display: flex; flex-direction: column; gap: 10px; min-width: 0; }
.result .k { font: 600 13px/1 var(--f-mono); letter-spacing: .12em; text-transform: uppercase; color: var(--dim); }
.result .big { font: 800 clamp(64px, 9vw, 104px)/1 var(--f-display); color: var(--sun); font-variant-numeric: tabular-nums; letter-spacing: -.03em; }
.result .btn { align-self: flex-start; margin-top: 14px; }

.band-light { background: var(--band); color: var(--band-ink); }
.band-light .lede, .band-light p { color: var(--band-dim); }
.band-light a { color: var(--band-link); }
.band-light .eyebrow { color: var(--band-link); }
.life { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 18px; margin-top: 36px; }
@media (max-width: 900px) { .life { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 520px) { .life { grid-template-columns: minmax(0, 1fr); } }
.life figure { margin: 0; background: var(--band-card); border-radius: 18px; overflow: hidden; display: flex; flex-direction: column; }
.life img { display: block; width: 100%; height: 190px; object-fit: cover; }
.life figcaption { padding: 18px; }
.life h3 { font-size: 20px; color: var(--band-ink); }
.life figcaption p { margin: 6px 0 0; font-size: 15px; }
.credits { font-size: 12px; margin: 20px 0 0; }

.two { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 48px; align-items: center; }
@media (max-width: 900px) { .two { grid-template-columns: minmax(0, 1fr); gap: 28px; } }
.vs { display: flex; flex-direction: column; gap: 14px; }
.vs div { display: flex; gap: 16px; align-items: flex-start; border-radius: 16px; padding: 20px; background: var(--bg-2); color: var(--dim); }
.vs b { font: 800 22px/1.2 var(--f-display); flex: none; width: 120px; }
.vs .sys { background: var(--sun); color: var(--sun-ink); }
.src { font-size: 13px; color: var(--dim); }
.src a { color: var(--dim); }

.minds-sec { background: var(--bg-2); }
.minds { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 30px 24px; margin-top: 36px; }
@media (max-width: 900px) { .minds { grid-template-columns: minmax(0, 1fr); } }
.mind { display: flex; gap: 16px; align-items: flex-start; border-top: 3px solid var(--sun); padding-top: 18px; }
.mind img, .mind .ini { flex: none; width: 72px; height: 72px; border-radius: 50%; object-fit: cover; object-position: center 20%; border: 2px solid var(--sun); }
.mind .ini { display: flex; align-items: center; justify-content: center; background: var(--bg-3); color: var(--sun); font: 800 18px var(--f-display); }
.mind h3 { font-size: 21px; }
.mind p { margin: 6px 0 0; color: var(--dim); font-size: 15px; }
.punch { margin: 36px 0 0; font: 700 20px/1.4 var(--f-body); }

.screens { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; margin-top: 36px; justify-items: center; }
@media (max-width: 900px) { .screens { grid-template-columns: minmax(0, 1fr); } }
.screens figure { margin: 0; display: flex; flex-direction: column; align-items: center; gap: 14px; font-weight: 700; }
.mock { width: 220px; height: 440px; border-radius: 34px; border: 9px solid #06140f; overflow: hidden; display: flex; flex-direction: column; box-sizing: border-box; }
.mock.home { background: linear-gradient(180deg, #16403a, #0d2420 55%, #06140f); color: #e6f4ee; padding: 28px 18px; gap: 14px; }
.mock.home .t { font: 800 44px/1 var(--f-display); }
.mock.home .apps { display: flex; flex-direction: column; gap: 10px; font-size: 16px; font-weight: 600; margin-top: 8px; }
.mock.home .todo { margin-top: auto; background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.1); border-radius: 12px; padding: 10px; font-size: 12px; font-weight: 500; }
.mock.blocked { background: #0d2420; border-color: #6ee7b7; color: #e6f4ee; padding: 28px 18px; gap: 12px; justify-content: center; align-items: center; text-align: center; }
.mock.blocked b { font: 800 28px var(--f-display); color: #6ee7b7; }
.mock.set { background: #f2f9f5; color: #0d2420; padding: 24px 16px; gap: 12px; font-size: 13px; font-weight: 500; }
.mock.set .row { background: #fff; border-radius: 10px; padding: 10px; }
.mock.set .on { background: #dff3e6; color: #1a6b3c; font-weight: 700; }

.trade { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; margin-top: 32px; }
@media (max-width: 720px) { .trade { grid-template-columns: minmax(0, 1fr); } }
.trade > div { background: var(--bg-2); border-radius: 18px; padding: 28px; }
.trade h3 { margin-bottom: 12px; }
.trade .get h3 { color: var(--sun); }
.trade ul { margin: 0; padding-left: 20px; line-height: 1.9; }
.trade .cost ul { color: var(--dim); }

.sci { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; margin-top: 32px; }
@media (max-width: 900px) { .sci { grid-template-columns: minmax(0, 1fr); } }
.sci > div { background: var(--band-card); border-radius: 18px; padding: 24px; display: flex; flex-direction: column; gap: 10px; }
.sci b { font: 800 26px/1.15 var(--f-display); color: var(--band-ink); }
.sci p { margin: 0; }
.sci a { font-weight: 700; font-size: 14px; margin-top: auto; }
.more { margin: 12px 0 0; padding-left: 20px; line-height: 2; }

.faq { margin-top: 28px; display: flex; flex-direction: column; gap: 10px; max-width: 820px; }
.faq details { background: var(--bg-2); border: 1px solid var(--line); border-radius: 14px; padding: 18px 22px; }
.faq summary { cursor: pointer; font: 700 18px/1.4 var(--f-body); list-style: none; display: flex; justify-content: space-between; gap: 16px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--sun); font-size: 24px; line-height: 1; }
.faq details[open] summary::after { content: "–"; }
.faq details p { margin: 12px 0 0; color: var(--dim); }