/* Packet Mail website. The Logbook look from lib/theme.dart. */

@font-face { font-family: "Source Serif 4"; src: url("fonts/SourceSerif4.woff2") format("woff2"); font-weight: 400 700; font-style: normal; font-display: swap; }
@font-face { font-family: "Source Serif 4"; src: url("fonts/SourceSerif4-Italic.woff2") format("woff2"); font-weight: 400 700; font-style: italic; font-display: swap; }
@font-face { font-family: "Inter"; src: url("fonts/Inter.woff2") format("woff2"); font-weight: 400 700; font-style: normal; font-display: swap; }
@font-face { font-family: "JetBrains Mono"; src: url("fonts/JetBrainsMono.woff2") format("woff2"); font-weight: 400 700; font-style: normal; font-display: swap; }

:root {
  --paper: #F6F1E7;
  --paper-deep: #EFE8DA;
  --rule: #E1D8C5;
  --ink: #2B2620;
  --ink-soft: #6F6656;
  --red: #B0482C;
  --red-dark: #8E3820;
  --serif: "Source Serif 4", Georgia, serif;
  --sans: "Inter", system-ui, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, monospace;
}

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--paper);
  color: var(--ink);
  font: 400 1.0625rem/1.6 var(--serif);
}

a { color: var(--red); text-underline-offset: 0.15em; }
a:hover { color: var(--red-dark); }
a:focus-visible, .button:focus-visible { outline: 3px solid var(--red); outline-offset: 2px; border-radius: 3px; }

img { max-width: 100%; height: auto; display: block; }
figure { margin: 0; }

main { flex: 1; }

.skip { position: absolute; left: -999px; top: 0; background: var(--ink); color: var(--paper); padding: 0.5rem 1rem; font-family: var(--sans); }
.skip:focus { left: 0.5rem; top: 0.5rem; z-index: 10; }

.wrap { max-width: 62rem; margin: 0 auto; padding: 0 1.25rem; }
.narrow { max-width: 40rem; }

/* Header and footer */

.site-head { border-bottom: 1px solid var(--rule); }
.site-head .wrap { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding-top: 0.75rem; padding-bottom: 0.75rem; flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 0.6rem; color: var(--ink); text-decoration: none; font: 700 1.2rem var(--serif); }
.brand img { width: 36px; height: 36px; border-radius: 8px; }
.site-head nav ul { list-style: none; display: flex; gap: 1.1rem; margin: 0; padding: 0; font: 500 0.95rem var(--sans); }
.site-head nav a { color: var(--ink-soft); text-decoration: none; padding: 0.4rem 0; }
.site-head nav a:hover, .site-head nav a[aria-current="page"] { color: var(--red); }

.site-foot { margin-top: 4rem; border-top: 1px solid var(--rule); background: var(--paper-deep); font: 400 0.9rem/1.6 var(--sans); color: var(--ink-soft); }
.site-foot .wrap { padding-top: 1.5rem; padding-bottom: 2rem; }
.site-foot p { margin: 0.3rem 0; }

/* Type */

h1, h2, h3 { font-family: var(--serif); line-height: 1.2; margin: 0 0 0.6rem; }
h1 { font-size: 2.2rem; font-weight: 700; }
h2 { font-size: 1.6rem; font-weight: 700; margin-top: 3rem; }
h3 { font-size: 1.15rem; font-weight: 600; }
p { margin: 0 0 1rem; }

.label { font: 600 0.75rem var(--sans); letter-spacing: 0.15em; text-transform: uppercase; color: var(--red); margin: 0 0 0.5rem; }
.lead { font-size: 1.2rem; color: var(--ink); }
.muted { color: var(--ink-soft); }
code, .mono { font-family: var(--mono); font-size: 0.9em; }

/* Hero */

.hero { padding: 2.5rem 0 1rem; display: grid; gap: 2rem; align-items: center; }
.hero h1 { font-size: 2.5rem; }
.hero .shot { max-width: 17rem; margin: 0 auto; }

.phone {
  border-radius: 1.4rem;
  overflow: hidden;
  border: 1px solid var(--rule);
  box-shadow: 0 10px 30px rgba(43, 38, 32, 0.14);
  background: var(--paper);
}

.buttons { display: flex; flex-wrap: wrap; gap: 0.75rem; margin: 1.5rem 0 0.5rem; }
.button {
  display: inline-flex; flex-direction: column; justify-content: center;
  min-height: 3rem; padding: 0.45rem 1.1rem;
  border: 1.5px solid var(--red); border-radius: 6px;
  font: 600 0.95rem/1.25 var(--sans); color: var(--red); text-decoration: none; background: transparent;
}
.button small { font-weight: 500; font-size: 0.75rem; color: var(--ink-soft); }
.button.primary { background: var(--red); color: #fff; }
.button.primary:hover { background: var(--red-dark); color: #fff; }
.button.soon { border-style: dashed; border-color: var(--ink-soft); color: var(--ink); }

/* Stamp, as on the app's inbox */
.stamp {
  display: inline-block; border: 1.5px solid var(--red); border-radius: 4px; color: var(--red);
  font: 700 0.7rem var(--sans); letter-spacing: 0.06em; padding: 0.2rem 0.45rem;
  transform: rotate(-3deg); margin-bottom: 1rem;
}

/* Features */

.features { list-style: none; margin: 1.5rem 0 0; padding: 0; display: grid; gap: 0; }
.features li { border-top: 1px solid var(--rule); padding: 1rem 0; }
.features li:last-child { border-bottom: 1px solid var(--rule); }
.features h3 { margin-bottom: 0.25rem; }
.features p { margin: 0; color: var(--ink-soft); }

/* Panels */

.panel { background: var(--paper-deep); border: 1px solid var(--rule); border-radius: 8px; padding: 1.25rem 1.25rem 0.5rem; margin-top: 1rem; }
.details { display: grid; grid-template-columns: max-content 1fr; gap: 0.25rem 1rem; margin: 0 0 1rem; font-family: var(--sans); font-size: 0.95rem; }
.details dt { color: var(--ink-soft); }
.details dd { margin: 0; font-family: var(--mono); font-size: 0.9rem; overflow-wrap: anywhere; }
@media (max-width: 30rem) {
  .details { grid-template-columns: 1fr; }
  .details dt { font-size: 0.8rem; margin-top: 0.4rem; }
  .details dd { font-size: 0.85rem; }
}
ol.steps { padding-left: 1.3rem; }
ol.steps li { margin-bottom: 0.4rem; }

/* Gallery */

.gallery { list-style: none; padding: 0.25rem 0 1rem; margin: 1rem -1.25rem 0; display: flex; gap: 1rem; overflow-x: auto; scroll-snap-type: x mandatory; padding-left: 1.25rem; padding-right: 1.25rem; }
.gallery li { flex: 0 0 62%; scroll-snap-align: center; margin: 0; }
.gallery figcaption { font: 500 0.85rem var(--sans); color: var(--ink-soft); text-align: center; margin-top: 0.6rem; }

/* Prose pages */

.prose { padding-top: 2rem; }
.prose h2 { font-size: 1.3rem; margin-top: 2rem; }

@media (min-width: 40rem) {
  .gallery li { flex-basis: 40%; }
}

@media (min-width: 52rem) {
  .hero { grid-template-columns: 1.4fr 1fr; padding-top: 4rem; }
  .hero h1 { font-size: 3.2rem; }
  .features { grid-template-columns: 1fr 1fr; column-gap: 2.5rem; }
  .features li:nth-last-child(2) { border-bottom: 1px solid var(--rule); }
  .gallery { margin: 1rem 0 0; padding-left: 0; padding-right: 0; overflow: visible; display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; }
  .split { display: grid; grid-template-columns: 1fr 1fr; gap: 2.5rem; }
  .split h2 { margin-top: 3rem; }
}

@media (prefers-reduced-motion: reduce) { * { scroll-behavior: auto !important; } }