/* wrightcalc.app: refined-vintage hardware look. System fonts only. */
:root {
  --bg: #16181b;
  --panel: #202328;
  --panel-2: #2a2d32;
  --line: #3a3e44;
  --text: #ece9e2;
  --muted: #b8b4ab;
  --metal-1: #d5d8dc;
  --metal-2: #a9adb3;
  --ink: #1b1d20;
  --lcd: #b9cc9c;
  --lcd-2: #a6bc88;
  --lcd-ink: #17200f;
  --link: #e8c872;
  --accent: #c8a24a;
  --radius: 10px;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", "Cascadia Mono", "Roboto Mono", Menlo, Consolas, monospace;
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 1rem/1.6 var(--sans);
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--link); text-underline-offset: 2px; }
a:hover { color: #fff; }
:focus-visible { outline: 3px solid var(--link); outline-offset: 2px; border-radius: 4px; }
h1, h2, h3 { line-height: 1.2; margin: 0 0 .5em; }
h2 {
  font-size: 1.35rem;
  letter-spacing: .06em;
  text-transform: uppercase;
  margin-top: 2.2rem;
  padding-bottom: .35rem;
  border-bottom: 2px solid var(--accent);
  display: inline-block;
}
.wrap { width: min(100% - 2rem, 70rem); margin-inline: auto; }
.vh { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip { position: absolute; left: -999px; top: 0; background: var(--lcd); color: var(--lcd-ink); padding: .5rem 1rem; z-index: 9; }
.skip:focus { left: 1rem; }
.fine { color: var(--muted); font-size: .875rem; }

/* Brushed-metal nameplate header */
.plate {
  background:
    repeating-linear-gradient(90deg, rgba(255,255,255,.07) 0 1px, rgba(0,0,0,.04) 1px 3px),
    linear-gradient(180deg, var(--metal-1), var(--metal-2));
  color: var(--ink);
  border-bottom: 4px solid var(--accent);
  box-shadow: 0 2px 0 rgba(0,0,0,.5);
}
.plate-row { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: .5rem 1.5rem; padding: .7rem 0; }
.brand {
  color: var(--ink); text-decoration: none; font-weight: 800; letter-spacing: .18em;
  display: inline-flex; align-items: center; gap: .55rem; font-size: 1.05rem;
}
.brand span:last-child { font-weight: 400; }
.screw {
  width: 14px; height: 14px; border-radius: 50%;
  background: radial-gradient(circle at 35% 35%, #f4f5f6, #8b9097 70%);
  box-shadow: inset 0 0 0 1px #6c7178;
  position: relative;
}
.screw::after { content: ""; position: absolute; left: 3px; right: 3px; top: 6px; height: 2px; background: #5a5f66; transform: rotate(-30deg); }
.plate nav { display: flex; gap: 1.1rem; }
.plate nav a { color: var(--ink); font-weight: 600; text-decoration: none; padding: .35rem 0; }
.plate nav a:hover { text-decoration: underline; color: #000; }
.plate a:focus-visible { outline-color: var(--ink); }

main { padding-bottom: 3rem; }

/* LCD hero */
.hero { display: grid; gap: 1.5rem; padding-top: 1.75rem; }
.lcd {
  background: linear-gradient(180deg, var(--lcd), var(--lcd-2));
  color: var(--lcd-ink);
  border-radius: var(--radius);
  padding: 1.4rem 1.4rem 1.6rem;
  box-shadow: inset 0 3px 8px rgba(0,0,0,.35), 0 0 0 6px var(--panel-2), 0 0 0 8px var(--accent);
  margin: 8px;
}
.lcd a:not(.play) { color: #1d3a0c; font-weight: 600; }
.lcd a:not(.play):hover { color: #000; }
.lcd :focus-visible { outline-color: var(--lcd-ink); }
.lcd-tag { font: 700 .8rem/1 var(--mono); letter-spacing: .2em; margin: 0 0 .8rem; opacity: .85; }
.lcd h1 { font-size: clamp(1.7rem, 5vw, 2.6rem); }
.lcd-num { font-family: var(--mono); }
.lead { font-size: 1.15rem; }
.price { font-family: var(--mono); font-weight: 700; }
.device {
  margin: 0; justify-self: center; max-width: 300px;
  padding: 10px; border-radius: 28px;
  background: #0d0e10; box-shadow: 0 0 0 2px var(--line), 0 12px 30px rgba(0,0,0,.5);
}
.device img { border-radius: 18px; }
@media (min-width: 48rem) {
  .app-hero { grid-template-columns: 1fr auto; align-items: center; }
  .device { max-width: 320px; }
}

/* Play button */
.play {
  display: inline-flex; align-items: center; gap: .7rem;
  background: #0d0e10; color: #fff; text-decoration: none;
  padding: .55rem 1.1rem .6rem .9rem; border-radius: 8px;
  border: 1px solid #6b7078; font-weight: 700; font-size: 1.05rem; line-height: 1.1;
  min-height: 48px;
}
.play small { display: block; font-weight: 400; font-size: .72rem; letter-spacing: .04em; }
.play:hover { color: #fff; background: #000; border-color: #fff; }
.play-tri { width: 0; height: 0; border-left: 16px solid var(--link); border-top: 10px solid transparent; border-bottom: 10px solid transparent; }
.soon {
  display: inline-block; font-family: var(--mono); font-weight: 700; font-size: .9rem;
  padding: .55rem .9rem; border-radius: 8px; border: 2px dashed currentColor;
}

/* App cards */
.cards { list-style: none; margin: 0; padding: 0; display: grid; gap: 1rem; grid-template-columns: repeat(auto-fill, minmax(17rem, 1fr)); }
.card {
  background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius);
  border-top: 10px solid var(--accent);
  padding: 1rem 1.1rem 1.1rem; display: flex; flex-direction: column;
  box-shadow: inset 0 1px 0 rgba(255,255,255,.12);
}
.card h3 { font-size: 1.3rem; margin: 0; letter-spacing: .03em; }
.card h3 a { color: var(--text); text-decoration: none; }
.card h3 a:hover { text-decoration: underline; }
.card-sub { margin: 0 0 .5rem; color: var(--muted); font-family: var(--mono); font-size: .85rem; text-transform: uppercase; letter-spacing: .08em; }
.card p { margin-top: 0; }
.card-foot { margin-top: auto; display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: .75rem; }
.card .soon { color: var(--muted); }
.more { font-weight: 600; padding: .5rem 0; }

/* Why / features */
.why-list, .examples { padding-left: 1.2rem; }
.why-list li, .examples li { margin: .4rem 0; }
.feats { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fill, minmax(18rem, 1fr)); }
.feat { background: var(--panel); border-left: 4px solid var(--accent); border-radius: 6px; padding: .8rem 1rem; }
.feat h3 { font-size: 1rem; letter-spacing: .06em; text-transform: uppercase; }
.feat ul { margin: 0; padding-left: 1.1rem; }

/* Key formulas */
.keys { margin: 0; display: grid; gap: .6rem; }
.key-row { background: var(--panel); border-radius: 6px; padding: .7rem .9rem; display: grid; gap: .3rem; }
@media (min-width: 48rem) { .key-row { grid-template-columns: 15rem 1fr; gap: 1rem; } }
.key-row dt { display: flex; flex-wrap: wrap; align-items: baseline; gap: .4rem; }
.key-row dd { margin: 0; }
kbd {
  font: 700 .9rem/1 var(--mono);
  background: linear-gradient(180deg, #f0ede6, #cfcac0); color: var(--ink);
  border-radius: 5px; padding: .35rem .55rem; min-width: 2.6rem; text-align: center; display: inline-block;
  box-shadow: 0 2px 0 #77736b, inset 0 1px 0 #fff;
}
kbd.shift { background: linear-gradient(180deg, #e8c872, #c8a24a); box-shadow: 0 2px 0 #7a6225; }
.key-name { color: var(--muted); font-size: .875rem; flex-basis: 100%; }

.buy { margin-top: 1rem; }
.nl { border-top: 1px solid var(--line); margin-top: 2.5rem; }

/* Prose pages */
.prose { max-width: 46rem; padding-top: 2rem; }
.prose h1 { font-size: 2rem; }
.prose h2 { font-size: 1.05rem; }
details { background: var(--panel); border-radius: 6px; padding: .7rem 1rem; margin: .6rem 0; }
summary { cursor: pointer; font-weight: 700; min-height: 1.75rem; }
details p { margin-bottom: 0; }

.foot { border-top: 1px solid var(--line); background: #111315; padding: 1.5rem 0 2rem; color: var(--muted); font-size: .95rem; }
.foot p { margin: .3rem 0; }

@media (prefers-reduced-motion: no-preference) { html { scroll-behavior: smooth; } }