/* Flat: the Lightmorphic product-site layout, shared with Talk.
   Plain CSS, one self-hosted font, no framework, no external requests. */

@font-face {
  font-family: "Manrope";
  src: url("fonts/Manrope-VariableFont_wght.ttf") format("truetype");
  font-weight: 200 800;
  font-display: swap;
}

:root {
  color-scheme: dark;
  --bg: #09090b;  --fg: #fafafa;
  --panel: #1b1d29;  --panel-border: rgba(255,255,255,.09);
  --border: #27272a;  --muted: #1c1c1f;  --muted-fg: #a1a1aa;
  --shadow-panel: 0 1px 2px rgba(0,0,0,.35), 0 8px 24px -16px rgba(0,0,0,.6);

  --accent: #fbc711;  --accent-hover: #ddaf0f;  --on-accent: #645007;
  --accent-container: #4b3c05;  --on-accent-container: #fde694;

  --brand-navy: #111827;
  --link: #2295f1;
  --success: #4bae4f;
  --warning: #ffc006;

  --radius: 0.875rem;
  --panel-radius: 1.375rem;
  --wrap: 68rem;

  /* The accent yellow reads at 12.6:1 on this background, so it is the
     focus ring here. */
  --focus-ring: var(--accent);

}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: "Manrope", system-ui, sans-serif;
  font-size: 1rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.wrap { width: min(100% - 2.5rem, var(--wrap)); margin-inline: auto; }

a { color: var(--link); }
a:focus-visible, button:focus-visible, .btn:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--focus-ring);
  outline-offset: 2px;
}

.skip {
  position: absolute; left: -9999px;
  background: var(--panel); color: var(--fg);
  padding: .75rem 1rem; border-radius: var(--radius); z-index: 10;
}
.skip:focus { left: 1rem; top: 1rem; }

h1, h2, h3 { line-height: 1.2; margin: 0 0 .5rem; }
h1 { font-size: clamp(2rem, 5vw, 3rem); font-weight: 700; letter-spacing: -.02em; }
h2 { font-size: 1.75rem; font-weight: 600; letter-spacing: -.01em; }
h3 { font-size: 1.0625rem; font-weight: 600; }
p { margin: 0 0 1rem; }
p:last-child { margin-bottom: 0; }

/* ---- nav ---------------------------------------------------------- */

.topnav {
  position: sticky; top: 0; z-index: 5;
  background: var(--bg);
  border-bottom: 1px solid var(--panel-border);
}
.topnav-inner { display: flex; align-items: center; gap: 1rem; padding: .3rem 0; }
/* Padding moved from the bar onto each link rather than just added on
   top of it - a nav link's own clickable box was ~24px tall before
   this, under the 44px a touch target wants; this keeps the bar close
   to its old height while giving every link room of its own. */
.brand {
  display: inline-flex; align-items: center; gap: .5rem;
  font-weight: 700; color: var(--fg); text-decoration: none;
  letter-spacing: -.01em; padding: .65rem 0;
}
.nav-links { margin-left: auto; display: flex; align-items: center; gap: 1.25rem; }
.nav-links a {
  color: var(--muted-fg); text-decoration: none; font-size: .9375rem;
  font-weight: 600; padding: .65rem 0;
}
.nav-links a:hover { color: var(--fg); }
@media (max-width: 40rem) { .nav-links .hide-sm { display: none; } }

/* ---- buttons ------------------------------------------------------ */

.btn {
  display: inline-flex; align-items: center; gap: .5rem;
  border-radius: var(--radius);
  padding: .7rem 1.15rem;
  font: inherit; font-weight: 600;
  text-decoration: none; cursor: pointer;
  border: 1px solid transparent;
}
.btn.primary { background: var(--accent); color: var(--on-accent); }
.btn.primary:hover { background: var(--accent-hover); }
.btn.ghost { background: var(--muted); color: var(--fg); border-color: var(--border); }
.btn.ghost:hover { border-color: var(--muted-fg); }

/* ---- hero --------------------------------------------------------- */
/* Uneven on purpose: the promise carries the weight, and the session
   check sits beside it as the one thing to verify before downloading. */

.hero { padding: 3.5rem 0 2rem; }
.hero-grid {
  display: grid; gap: 2rem;
  grid-template-columns: 1.35fr 1fr;
  align-items: center;
}
@media (max-width: 60rem) { .hero-grid { grid-template-columns: 1fr; } }

.eyebrow {
  display: inline-flex; align-items: center; gap: .5rem;
  background: var(--accent-container); color: var(--on-accent-container);
  border-radius: 999px; padding: .3rem .75rem;
  font-size: .8125rem; font-weight: 700;
  letter-spacing: .03em; text-transform: uppercase;
  margin-bottom: 1rem;
}
.lede { font-size: 1.125rem; color: var(--muted-fg); max-width: 46ch; }
.hero-cta { display: flex; flex-wrap: wrap; gap: .75rem; margin-top: 1.5rem; }
.hero-note { margin-top: 1rem; font-size: .8125rem; color: var(--muted-fg); }

/* ---- panels / bento ------------------------------------------------ */

.panel {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: var(--panel-radius);
  box-shadow: var(--shadow-panel);
  padding: 1.5rem;
}
section { padding: 2.5rem 0; }
section[id] { scroll-margin-top: 5.5rem; }
.section-intro { color: var(--muted-fg); max-width: 60ch; margin-bottom: 1.5rem; }

/* Columns rather than a grid, so a short card does not leave a hole
   under it waiting for the row to end. Each card is as tall as its
   own text and the next one starts immediately below. A grid cannot do
   this: its rows are as tall as their tallest cell, which is what left
   a gap under "Six languages". */
.bento { columns: 2; column-gap: 1rem; }
.bento > .panel {
  break-inside: avoid;
  -webkit-column-break-inside: avoid;
  margin-bottom: 1rem;
}
@media (max-width: 56rem) { .bento { columns: 1; } }
.bento h3 { display: flex; align-items: center; gap: .5rem; }
.bento p { color: var(--muted-fg); font-size: .9375rem; }
.icon { flex: none; color: var(--accent); }

/* ---- requirements -------------------------------------------------- */

.req ul { margin: .75rem 0 0; padding-left: 1.1rem; color: var(--muted-fg); }
.req li { margin-bottom: .35rem; }
.req pre {
  background: var(--muted); border: 1px solid var(--border);
  border-radius: var(--radius); padding: .8rem 1rem; overflow-x: auto;
  font-size: .9375rem; margin: .75rem 0;
}
.req code { font-family: ui-monospace, Menlo, Consolas, monospace; }

/* ---- download ------------------------------------------------------ */

.download .panel { display: grid; gap: 1rem; }
.dl-row { display: flex; flex-wrap: wrap; align-items: center; gap: 1rem; }
.dl-meta { color: var(--muted-fg); font-size: .875rem; }
.dl-help { color: var(--muted-fg); font-size: .9375rem; }

/* ---- footer -------------------------------------------------------- */

.foot {
  border-top: 1px solid var(--panel-border);
  padding: 2.75rem 0 2.25rem;
  color: var(--muted-fg); font-size: .875rem;
}
.foot-inner {
  display: flex; flex-wrap: wrap; gap: 2rem 4rem;
  align-items: flex-start; justify-content: space-between;
}

/* The brand side carries the weight: mark, name, a line saying what
   this is, and who made it. Without it the row was an image at one
   edge and a list at the other with nothing in between. */
.foot-brand {
  display: flex; flex-direction: column; align-items: flex-start;
  gap: 1rem; max-width: 52ch;
}
.foot-lockup {
  display: inline-flex; align-items: center; gap: .6rem;
  font-size: 1.0625rem; font-weight: 700; letter-spacing: -.01em;
  color: var(--fg); text-decoration: none; padding: .35rem 0;
}
.foot-lockup:hover { color: var(--accent); }
.foot-tagline {
  margin: 0; color: var(--muted-fg);
  font-size: .875rem; line-height: 1.65;
}

.foot-nav { display: flex; flex-direction: column; margin-right: 3rem; }
.foot-nav-title {
  margin: 0 0 .6rem; padding-bottom: .5rem;
  font-size: .75rem; font-weight: 700;
  letter-spacing: .09em; text-transform: uppercase; color: var(--muted-fg);
  border-bottom: 1px solid var(--panel-border);
}
/* Column-major: the list reads downwards and then across, the way a
   menu is read, rather than left-to-right along each row. */
.foot-nav-links {
  display: grid; grid-auto-flow: column;
  grid-template-rows: repeat(3, auto);
  column-gap: 3rem;
}
.foot-nav a {
  color: var(--fg); text-decoration: none; font-weight: 600;
  opacity: .8;
}
.foot-nav a:hover { opacity: 1; color: var(--accent); }
.foot-nav a[aria-current="page"] { opacity: 1; color: var(--accent); }
/* .7rem each side of a 22px line clears the 44px a touch target wants. */
.foot-nav a { display: inline-flex; align-items: center; padding: .7rem 0; }

/* ---- questions ------------------------------------------------------ */

.faq-item { border-top: 1px solid var(--panel-border); }
.faq-item:first-child { border-top: none; }
.faq-item h3 { margin: 0; font-size: 1rem; }
.faq-item summary {
  cursor: pointer; padding: .85rem 0; list-style: none;
  display: flex; justify-content: space-between; gap: 1rem;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; color: var(--muted-fg); font-weight: 400; }
.faq-item[open] summary::after { content: "\2013"; }
.faq-item p {
  color: var(--muted-fg); font-size: .9375rem;
  margin: 0 0 .95rem; max-width: 68ch;
}


/* The bar carries one more item than it used to: the all-apps launcher,
   which is the last thing on the right and has to stay reachable at
   every width. On a narrow screen the brand was also wrapping onto two
   lines, which pushed the bar to 83px tall and squeezed the links until
   Download ran off the edge. Keeping the name on one line and trimming
   the gaps buys back the room the launcher needs. */
@media (max-width: 40rem) {
  .brand { white-space: nowrap; font-size: .9375rem; gap: .4rem; }
  .topnav-inner { gap: .6rem; }
  .nav-links { gap: .85rem; }
}

/* ---- legal sub-footer ----------------------------------------------- */

.legal {
  border-top: 1px solid var(--panel-border);
  background: var(--bg);
  padding: 1.25rem 0 1.75rem;
}
.legal-inner {
  display: flex; flex-wrap: wrap; gap: 1rem 2rem;
  align-items: flex-start; justify-content: space-between;
}
.legal-text {
  margin: 0; color: var(--muted-fg);
  font-size: .8125rem; line-height: 1.6;
}
/* Each of the three lines breaks where its own <br> says, not where a
   measure runs out: the company line was wrapping mid-sentence. It
   still wraps on a screen too narrow to hold it, which is the one
   place wrapping is the right answer. */
.legal-links {
  display: flex; flex-wrap: wrap; gap: 1.25rem;
  margin-left: auto; justify-content: flex-end;
}
.legal-links a {
  color: var(--muted-fg); text-decoration: none;
  font-size: .8125rem; font-weight: 600; padding: .55rem 0;
}
.legal-links a:hover { color: var(--fg); text-decoration: underline; }

/* On a narrow screen the links go under the address rather than being
   squeezed against it, still reading left to right in the same order. */
@media (max-width: 46rem) {
  .legal-links { margin-left: 0; justify-content: flex-start; gap: 1rem; }
}

/* ---- legal pages ----------------------------------------------------- */

.legal-page { padding: 2.5rem 0 1rem; }
.legal-page h1 { font-size: clamp(1.7rem, 3.6vw, 2.4rem); margin: 0 0 .5rem; }
.legal-page .updated { color: var(--muted-fg); font-size: .875rem; margin: 0 0 1.75rem; }
.legal-body { max-width: 68ch; }
.legal-body h2 { font-size: 1.25rem; margin: 2rem 0 .5rem; }
.legal-body p, .legal-body li { color: var(--fg); line-height: 1.65; }
.legal-body ul { padding-left: 1.15rem; }
.legal-body li { margin: .35rem 0; }

/* ---- open-source sub-footer ------------------------------------------ */

.gh-foot {
  border-top: 1px solid var(--panel-border);
  padding: 1.25rem 0;
}
.gh-inner {
  display: flex; flex-wrap: wrap; gap: 1rem 2rem;
  align-items: center; justify-content: space-between;
}
.gh-marks { display: flex; align-items: center; gap: 1rem; }
.gh-marks a {
  display: inline-flex; align-items: center;
  color: var(--muted-fg); padding: .4rem 0;
}
.gh-marks a:hover { color: var(--fg); }
.gh-links {
  display: flex; flex-wrap: wrap; gap: 1.5rem;
  margin-left: auto; justify-content: flex-end;
}
.gh-links a {
  color: var(--muted-fg); text-decoration: none;
  font-size: .875rem; padding: .55rem 0;
}
.gh-links a:hover { color: var(--fg); text-decoration: underline; }

/* The legal links sit level with the last line of the address, as in
   the reference, rather than floating up beside the first. */
.legal-inner { align-items: flex-end; }

@media (max-width: 46rem) {
  .gh-links { margin-left: 0; justify-content: flex-start; gap: 1rem; }
  .foot-nav { margin-right: 0; }
}

/* ---- Flat's own pieces ------------------------------------------------ */

/* The fresh-install routine, beside the promise: the one thing a visitor
   needs to picture before downloading. Numbered, because the order is the
   point. */
.routine {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: var(--panel-radius);
  box-shadow: var(--shadow-panel);
  padding: 1.25rem 1.35rem;
}
.routine-title {
  font-size: .8125rem; font-weight: 700; letter-spacing: .04em;
  text-transform: uppercase; color: var(--muted-fg); margin-bottom: .75rem;
}
.routine ol { list-style: none; margin: 0; padding: 0; counter-reset: step; }
.routine li {
  counter-increment: step;
  display: flex; gap: .75rem; align-items: flex-start;
  padding: .55rem 0; border-top: 1px solid var(--panel-border);
  font-size: .9375rem;
}
.routine li:first-child { border-top: none; padding-top: 0; }
.routine li::before {
  content: counter(step);
  flex: none; width: 1.6rem; height: 1.6rem; border-radius: 50%;
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--accent); color: var(--on-accent);
  font-size: .8125rem; font-weight: 800;
}
.routine b { display: block; color: var(--fg); }
.routine span { color: var(--muted-fg); }
.routine-note { margin-top: .75rem; font-size: .8125rem; color: var(--muted-fg); }

/* Three steps across the page, numbered rather than edged: no coloured
   stripe down the side of anything. */
.steps { display: grid; gap: 1rem; grid-template-columns: repeat(3, 1fr); }
@media (max-width: 48rem) { .steps { grid-template-columns: 1fr; } }
.steps .panel { min-width: 0; }
.step-num {
  display: inline-flex; align-items: center; justify-content: center;
  width: 1.75rem; height: 1.75rem; border-radius: 50%;
  background: var(--accent-container); color: var(--on-accent-container);
  font-size: .875rem; font-weight: 800; margin-bottom: .6rem;
}
.steps h3 { margin-bottom: .3rem; }
.steps p { color: var(--muted-fg); font-size: .9375rem; }

/* A screenshot is a picture of the real app, framed like a panel. */
.shot { margin: 0; }
.shot img {
  display: block; width: 100%; height: auto;
  border-radius: var(--panel-radius);
  border: 1px solid var(--panel-border);
  box-shadow: var(--shadow-panel);
}
.shot figcaption { margin-top: .6rem; font-size: .875rem; color: var(--muted-fg); }
.shots { display: grid; gap: 1.5rem; grid-template-columns: 1fr 1fr; margin-top: 1.5rem; }
@media (max-width: 56rem) { .shots { grid-template-columns: 1fr; } }

/* Honest limits sit in a list, not behind a link. */
.limits ul { margin: 0; padding-left: 1.1rem; }
.limits li { color: var(--muted-fg); margin: .45rem 0; }
.limits li strong { color: var(--fg); }

/* Nothing inside a panel paints outside it. */
.panel, .bento > .panel { min-width: 0; }
.panel code, .panel p { overflow-wrap: anywhere; }
.faq-item code, .req code { font-family: ui-monospace, Menlo, Consolas, monospace; font-size: .9em; }