/* ABV POS - the product site. One stylesheet, no frameworks, no fonts fetched from anywhere:
   the page has to open fast on a shop's computer over a phone's tethered connection. */

:root {
  --ink: #10261c;
  --ink-soft: #40574b;
  --paper: #ffffff;
  --paper-soft: #f4f7f4;
  --line: #dce5dd;
  --green: #1d7a46;
  --green-dark: #135c33;
  --green-glow: rgba(29, 122, 70, 0.28);
  --deep: #0f2a1d;
  --deep-2: #17402b;
  --radius: 14px;
  --wrap: 1180px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 16px/1.6 "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 { line-height: 1.15; margin: 0 0 .5em; }
h1 { font-size: clamp(2rem, 4.6vw, 3.3rem); letter-spacing: -0.02em; }
h2 { font-size: clamp(1.5rem, 2.8vw, 2.1rem); letter-spacing: -0.01em; }
h3 { font-size: 1.12rem; }
p { margin: 0 0 1em; }
a { color: var(--green); }

code {
  font-family: "Cascadia Mono", Consolas, "Courier New", monospace;
  font-size: .92em;
  background: rgba(0, 0, 0, .05);
  padding: .1em .35em;
  border-radius: 5px;
  word-break: break-all;
}

/* ---------------------------------------------------------------- header */

.top {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 12px max(16px, calc((100vw - var(--wrap)) / 2));
  background: rgba(15, 42, 29, .92);
  backdrop-filter: blur(8px);
  color: #eaf3ec;
}

.brand { display: flex; align-items: baseline; gap: 8px; text-decoration: none; color: inherit; }
.mark {
  font-weight: 800;
  letter-spacing: .06em;
  background: #ffffff;
  color: var(--deep);
  padding: 3px 8px;
  border-radius: 8px;
}
.brand-name { font-weight: 700; letter-spacing: .22em; font-size: .95rem; opacity: .9; }

.nav { display: flex; align-items: center; gap: 4px; flex-wrap: wrap; }
.nav a {
  color: #d8e7dc;
  text-decoration: none;
  padding: 8px 12px;
  border-radius: 9px;
  font-size: .95rem;
}
.nav a:hover { background: rgba(255, 255, 255, .1); color: #fff; }
.nav .nav-cta {
  background: var(--green);
  color: #fff;
  font-weight: 600;
}
.nav .nav-cta:hover { background: #26a05c; }

/* ---------------------------------------------------------------- hero */

.hero {
  display: grid;
  grid-template-columns: 1fr minmax(420px, 560px);
  gap: clamp(24px, 4vw, 56px);
  align-items: center;
  padding: clamp(40px, 7vw, 92px) max(16px, calc((100vw - var(--wrap)) / 2)) clamp(48px, 7vw, 96px);
  background:
    radial-gradient(1100px 520px at 12% -10%, #1d5236 0%, transparent 60%),
    linear-gradient(160deg, var(--deep) 0%, var(--deep-2) 100%);
  color: #eef6f0;
}

.hero h1 { color: #fff; }
.hero .lead { font-size: clamp(1.02rem, 1.4vw, 1.2rem); color: #c9dccf; max-width: 46ch; margin: 0; }

/* The download panel - deliberately the largest, brightest thing on the first screen. */
.download-panel {
  background: var(--paper);
  color: var(--ink);
  border-radius: 20px;
  padding: clamp(20px, 2.6vw, 30px);
  box-shadow: 0 30px 70px rgba(0, 0, 0, .38), 0 2px 0 rgba(255, 255, 255, .1) inset;
}

.dl-os {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: .92rem;
  color: var(--ink-soft);
  margin-bottom: 14px;
}
.dl-logo { width: 20px; height: 20px; fill: #1d7a46; flex: none; }

.dl-button {
  display: flex;
  align-items: center;
  gap: 18px;
  width: 100%;
  padding: 28px 26px;
  border-radius: var(--radius);
  background: linear-gradient(180deg, #239554 0%, var(--green) 55%, var(--green-dark) 100%);
  color: #fff;
  text-decoration: none;
  box-shadow: 0 12px 26px var(--green-glow);
  transition: transform .12s ease, box-shadow .12s ease, filter .12s ease;
}
.dl-button:hover { transform: translateY(-2px); box-shadow: 0 18px 34px var(--green-glow); filter: brightness(1.04); }
.dl-button:active { transform: translateY(0); }
.dl-arrow { font-size: 3rem; line-height: 1; }
.dl-label { display: flex; flex-direction: column; }
.dl-label strong { font-size: clamp(1.35rem, 2.2vw, 1.8rem); letter-spacing: -0.01em; }
.dl-label small { opacity: .85; font-size: .88rem; }

.dl-facts {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin: 18px 0 14px;
  padding: 0;
}
.dl-facts div {
  background: var(--paper-soft);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 10px 12px;
}
.dl-facts dt { font-size: .74rem; text-transform: uppercase; letter-spacing: .07em; color: var(--ink-soft); }
.dl-facts dd { margin: 2px 0 0; font-weight: 600; font-size: .98rem; }

.dl-note { font-size: .92rem; color: var(--ink-soft); margin: 0 0 10px; }
.dl-hash { font-size: .78rem; color: var(--ink-soft); margin: 0; }

/* ---------------------------------------------------------------- bands */

.band { padding: clamp(44px, 6vw, 84px) max(16px, calc((100vw - var(--wrap)) / 2)); }
.band.alt { background: var(--paper-soft); border-block: 1px solid var(--line); }
.band-lead { color: var(--ink-soft); max-width: 62ch; margin-bottom: 28px; }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
  gap: 16px;
}

.card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
}
.band:not(.alt) .card { background: var(--paper-soft); }
.card h3 { color: var(--green-dark); }
.card p { margin: 0; color: var(--ink-soft); font-size: .97rem; }
.card.accent {
  border-color: var(--green);
  box-shadow: 0 10px 26px rgba(29, 122, 70, .12);
  background: #fff;
}

/* ---------------------------------------------------------------- screenshots */

.shot { margin: 0 0 34px; }
.shot img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  box-shadow: 0 18px 44px rgba(16, 38, 28, .14);
  background: #fff;
}
.shot.narrow img { max-width: 720px; margin-inline: auto; }
.shot figcaption {
  margin-top: 12px;
  color: var(--ink-soft);
  font-size: .95rem;
  max-width: 78ch;
}

/* ---------------------------------------------------------------- steps and requirements */

.steps { counter-reset: step; list-style: none; padding: 0; margin: 0; display: grid; gap: 16px; }
.steps li {
  counter-increment: step;
  display: grid;
  grid-template-columns: 46px 1fr;
  gap: 16px;
  align-items: start;
  background: var(--paper-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px 20px;
}
.steps li::before {
  content: counter(step);
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--green);
  color: #fff;
  font-weight: 700;
}
.steps h3 { margin-bottom: .25em; }
.steps p { margin: 0; color: var(--ink-soft); }

.req { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 20px; }
.req h3 { color: var(--green-dark); }
.req ul { margin: 0; padding-left: 20px; color: var(--ink-soft); }
.req li { margin-bottom: .4em; }

/* ---------------------------------------------------------------- contact and footer */

.contact { text-align: center; }
.contact .band-lead, .contact p { margin-inline: auto; }
.contact .dl-button { max-width: 420px; margin: 22px auto 0; }
.dl-button.small { padding: 16px 20px; }

.foot {
  padding: 28px max(16px, calc((100vw - var(--wrap)) / 2)) 40px;
  background: var(--deep);
  color: #bcd2c3;
  font-size: .9rem;
}
.foot p { margin: 0 0 4px; }
.foot .small { opacity: .7; font-size: .85rem; }

/* ---------------------------------------------------------------- narrow screens */

@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; }
  .hero .lead { max-width: none; }
  .nav a:not(.nav-cta) { display: none; }
}

@media (max-width: 420px) {
  .dl-facts { grid-template-columns: 1fr; }
  .dl-arrow { font-size: 1.8rem; }
}