/* GMRS-TTY site — palette taken from the app itself:
   plate/signal from the icon, RX/TX/pill from the WCAG-checked
   chat palette in gmrs_tty/constants.py. */

:root {
  --paper: #F5F7F9;
  --ink: #16212E;
  --muted: #44505C;
  --plate: #1B2A41;
  --plate-edge: #3D5270;
  --signal: #5BB8F5;
  --rx: #15803D;
  --tx: #1D4ED8;
  --pill-bg: #FEF3C7;
  --pill-ink: #78350F;
  --rule: #C6CFD8;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "Barlow", system-ui, sans-serif;
  font-size: 1.0625rem;
  line-height: 1.6;
}

a { color: var(--tx); }
a:hover { text-decoration-thickness: 2px; }
a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--tx);
  outline-offset: 2px;
}

.wrap {
  max-width: 56rem;
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* ---- header / data plate ---- */

header {
  background: var(--plate);
  color: var(--paper);
  padding: 3rem 0 2.5rem;
}

.plate {
  border: 2px solid var(--plate-edge);
  box-shadow: inset 0 0 0 6px var(--plate), inset 0 0 0 7px var(--plate-edge);
  padding: 2rem 2rem 1.5rem;
  position: relative;
}

.plate .screw {
  position: absolute;
  width: 10px;
  height: 10px;
  border: 1.5px solid var(--plate-edge);
  border-radius: 50%;
}
.plate .screw::after {
  content: "";
  position: absolute;
  left: 1px; right: 1px; top: 50%;
  border-top: 1.5px solid var(--plate-edge);
  transform: rotate(38deg);
}
.screw.tl { top: 8px; left: 8px; }
.screw.tr { top: 8px; right: 8px; }
.screw.bl { bottom: 8px; left: 8px; }
.screw.br { bottom: 8px; right: 8px; }

.plate-head {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  flex-wrap: wrap;
}

.plate-head img {
  width: 72px;
  height: 72px;
}

h1 {
  font-family: "Barlow Condensed", "Barlow", sans-serif;
  font-weight: 700;
  font-size: clamp(2.6rem, 7vw, 4rem);
  letter-spacing: 0.06em;
  margin: 0;
  line-height: 1;
}

.plate-sub {
  font-family: "Barlow Condensed", sans-serif;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--signal);
  margin: 0.4rem 0 0;
  font-size: 1.05rem;
}

.plate-specs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 2.25rem;
  margin-top: 1.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--plate-edge);
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.85rem;
}
.plate-specs dt {
  color: var(--signal);
  letter-spacing: 0.12em;
  font-size: 0.7rem;
  text-transform: uppercase;
}
.plate-specs dd { margin: 0; }
.plate-specs div { min-width: 7rem; }

.hero-copy {
  margin: 2rem 0 0;
  max-width: 44rem;
  font-size: 1.15rem;
}

.actions {
  margin-top: 1.5rem;
  display: flex;
  gap: 0.9rem;
  flex-wrap: wrap;
  align-items: center;
}

.btn {
  display: inline-block;
  font-family: "Barlow Condensed", sans-serif;
  font-weight: 600;
  font-size: 1.15rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  padding: 0.65rem 1.4rem;
  border: 2px solid var(--signal);
}
.btn-primary {
  background: var(--signal);
  color: var(--plate);
}
.btn-secondary {
  color: var(--paper);
}
.btn:hover { border-color: var(--paper); }

.dl-note {
  font-size: 0.85rem;
  color: #AEC3D6;
  font-family: "IBM Plex Mono", monospace;
  flex-basis: 100%;
  margin: 0;
}

/* ---- figure: chat mock ---- */

figure.chat {
  margin: 2.5rem 0 0;
}

.chat-window {
  background: #FFFFFF;
  color: var(--ink);
  border: 1px solid var(--rule);
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.83rem;
  line-height: 1.7;
  padding: 1rem 1.1rem;
  overflow-x: auto;
}

.chat-window p { margin: 0; white-space: nowrap; }
.chat-rx { color: var(--rx); }
.chat-tx { color: var(--tx); }
.chat-pill {
  background: var(--pill-bg);
  color: var(--pill-ink);
  font-weight: 600;
  padding: 0 0.3em;
  border-radius: 3px;
}
.chat-check { color: var(--rx); font-weight: 700; }

figcaption {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: #AEC3D6;
  margin-top: 0.6rem;
}

/* ---- manual sections ---- */

main { padding: 1rem 0 3rem; }

section { margin-top: 3.25rem; }

h2 {
  font-family: "Barlow Condensed", sans-serif;
  font-weight: 700;
  font-size: 1.9rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin: 0 0 0.25rem;
  color: var(--plate);
}

.rule {
  border: 0;
  border-top: 3px solid var(--plate);
  margin: 0 0 1.4rem;
}

h3 {
  font-family: "Barlow Condensed", sans-serif;
  font-weight: 600;
  font-size: 1.25rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin: 1.8rem 0 0.4rem;
  color: var(--plate);
}

p { margin: 0.8rem 0; }

ul {
  margin: 0.8rem 0;
  padding-left: 1.3rem;
}
li { margin: 0.45rem 0; }
li strong { color: var(--plate); }

blockquote {
  margin: 1.2rem 0;
  padding: 0.2rem 0 0.2rem 1.1rem;
  border-left: 4px solid var(--signal);
  color: var(--muted);
  font-style: italic;
}

code, pre {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.87em;
}
code {
  background: #E7ECF1;
  padding: 0.1em 0.35em;
  border-radius: 3px;
}
pre {
  background: var(--plate);
  color: var(--paper);
  padding: 1rem 1.2rem;
  overflow-x: auto;
}
pre code { background: none; padding: 0; color: inherit; }

table {
  border-collapse: collapse;
  width: 100%;
  margin: 1.2rem 0;
  font-size: 0.95rem;
}
caption {
  text-align: left;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: var(--muted);
  padding-bottom: 0.5rem;
}
th {
  font-family: "Barlow Condensed", sans-serif;
  font-weight: 600;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  font-size: 0.85rem;
  text-align: left;
  color: var(--plate);
  border-bottom: 2px solid var(--plate);
  padding: 0.4rem 1rem 0.4rem 0;
}
td {
  border-bottom: 1px solid var(--rule);
  padding: 0.5rem 1rem 0.5rem 0;
  vertical-align: top;
}
td code { white-space: nowrap; }

.spec-table td:first-child {
  font-family: "Barlow Condensed", sans-serif;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  font-size: 0.9rem;
  color: var(--plate);
  width: 12rem;
}

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

footer {
  background: var(--plate);
  color: #AEC3D6;
  padding: 2rem 0;
  font-size: 0.9rem;
}
footer a { color: var(--paper); }
footer nav {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
  font-family: "Barlow Condensed", sans-serif;
  font-size: 1.05rem;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}
footer p { margin: 0.4rem 0; }

@media (max-width: 40rem) {
  .plate { padding: 1.4rem 1.2rem 1.1rem; }
  .plate-specs { gap: 0.5rem 1.4rem; }
  th, td { padding-right: 0.6rem; }
}