/* ============================================================
   HFConverse (HFC) — site styles
   Author of app: Martin Rumball, MW0GBQ
   Identity: the HF shack at night. Amber dial-glow accent,
   system-aware light/dark themes, monospace as the "data" voice.
   ============================================================ */

/* ---- Non-color tokens (shared across themes) ---------------- */
:root {
  --font-display: "Archivo", "Helvetica Neue", Arial, sans-serif;
  --font-body: "IBM Plex Sans", system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;

  --maxw: 1140px;
  --gutter: clamp(1.25rem, 4vw, 3rem);
  --radius: 10px;
  --radius-lg: 16px;

  --step: clamp(4.5rem, 9vw, 8rem);   /* vertical rhythm between sections */

  --ease: cubic-bezier(.22, .61, .36, 1);
}

/* ---- Palette: LIGHT (default / "daytime desk") -------------- */
:root,
:root[data-theme="light"] {
  --bg:        #eceae2;
  --bg-tint:   #e3e0d6;
  --surface:   #fbfaf6;
  --surface-2: #f2f0e9;
  --ink:       #16201f;
  --ink-mid:   #445159;
  --ink-dim:   #6d7a80;
  --line:      #d5d1c4;
  --line-soft: #e0ddd2;
  --accent:      #e2933f;   /* dial glow / brand amber — fills, LEDs, rules */
  --accent-ink:  #9a5a0a;   /* burnt amber — for text/links on light */
  --accent-weak: #f6ead3;
  --signal:      #0f766e;   /* phosphor teal for received data */
  --green:       #2f9e44;   /* ionosphere / link — brand green, darkened for light */
  --ok:          #1f8a3b;
  --err:         #c0392b;
  --shadow: 0 1px 2px rgba(20,25,25,.06), 0 18px 40px -24px rgba(20,25,25,.35);
}

/* ---- Palette: DARK (system default when preferred) ---------- */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --bg:        #201811;   /* brand brown-black (matches logo) */
    --bg-tint:   #1a130c;
    --surface:   #241a12;   /* matches the app-icon panel */
    --surface-2: #2c2015;
    --ink:       #f4ead9;   /* brand cream */
    --ink-mid:   #c3b4a0;
    --ink-dim:   #8c7c68;
    --line:      #3a2c1e;
    --line-soft: #271d13;
    --accent:      #e2933f;   /* brand amber */
    --accent-ink:  #f0a860;   /* lighter amber for text on dark */
    --accent-weak: #2b2013;
    --signal:      #57c7d4;   /* RX teal — cool counterpoint */
    --green:       #4dff6b;   /* brand ionosphere / link green */
    --ok:          #5fe07a;
    --err:         #ff7a6e;
    --shadow: 0 1px 2px rgba(0,0,0,.4), 0 24px 50px -28px rgba(0,0,0,.75);
  }
}

/* ---- Palette: DARK (explicit override via toggle) ---------- */
:root[data-theme="dark"] {
  --bg:        #201811;
  --bg-tint:   #1a130c;
  --surface:   #241a12;
  --surface-2: #2c2015;
  --ink:       #f4ead9;
  --ink-mid:   #c3b4a0;
  --ink-dim:   #8c7c68;
  --line:      #3a2c1e;
  --line-soft: #271d13;
  --accent:      #e2933f;
  --accent-ink:  #f0a860;
  --accent-weak: #2b2013;
  --signal:      #57c7d4;
  --green:       #4dff6b;
  --ok:          #5fe07a;
  --err:         #ff7a6e;
  --shadow: 0 1px 2px rgba(0,0,0,.4), 0 24px 50px -28px rgba(0,0,0,.75);
}

/* ============================================================
   Base
   ============================================================ */
* { 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(--ink);
  font-family: var(--font-body);
  font-size: clamp(1rem, 0.96rem + 0.2vw, 1.075rem);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  transition: background-color .3s var(--ease), color .3s var(--ease);
}

h1, h2, h3 { font-family: var(--font-display); font-weight: 700; line-height: 1.04; margin: 0; letter-spacing: -0.01em; }
p { margin: 0; }
a { color: inherit; }

.wrap { width: min(100% - 2 * var(--gutter), var(--maxw)); margin-inline: auto; }

.eyebrow {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--accent-ink);
  margin: 0 0 1rem;
  display: inline-flex;
  align-items: center;
  gap: .6rem;
}
.eyebrow::before {
  content: "";
  width: 22px; height: 1px;
  background: var(--accent);
}

.mono { font-family: var(--font-mono); }
.section-lead {
  color: var(--ink-mid);
  font-size: clamp(1.05rem, 1rem + 0.4vw, 1.3rem);
  max-width: 46ch;
}

/* Focus visibility (quality floor) */
:where(a, button, .btn):focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ============================================================
   Buttons
   ============================================================ */
.btn {
  --btn-bg: var(--accent);
  --btn-fg: #1a1206;
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  font-family: var(--font-mono);
  font-size: .86rem;
  letter-spacing: .02em;
  font-weight: 500;
  padding: .78rem 1.25rem;
  border-radius: var(--radius);
  border: 1px solid transparent;
  background: var(--btn-bg);
  color: var(--btn-fg);
  text-decoration: none;
  cursor: pointer;
  transition: transform .15s var(--ease), background-color .2s var(--ease), border-color .2s var(--ease);
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

.btn--ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--line);
}
.btn--ghost:hover { border-color: var(--accent); background: var(--surface); }

/* ============================================================
   Header / nav
   ============================================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: color-mix(in srgb, var(--bg) 86%, transparent);
  backdrop-filter: saturate(1.4) blur(10px);
  border-bottom: 1px solid var(--line-soft);
}
.nav {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  height: 66px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: .6rem;
  text-decoration: none;
  color: var(--ink);
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: .01em;
  font-size: 1.15rem;
}
/* the reusable app-icon mark (real asset, transparent rounded corners) */
.hfc-mark { display: block; flex: none; }
.brand .hfc-mark { width: 30px; height: 30px; }
.footer-brand .hfc-mark { width: 30px; height: 30px; }
.hero-badge { display: inline-block; margin-bottom: 1.4rem; }
.hero-badge .hfc-mark {
  width: 68px; height: 68px;
  filter: drop-shadow(0 12px 22px rgba(0, 0, 0, .40));
}

/* green "ionosphere" dotted divider — the logo's signature line */
.iono {
  height: 0;
  border: 0;
  border-top: 2px dotted var(--green);
  opacity: .8;
  margin: 0;
  width: 100%;
}
.nav-links {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 1.6rem;
}
.nav-links a {
  font-family: var(--font-mono);
  font-size: .82rem;
  letter-spacing: .04em;
  text-decoration: none;
  color: var(--ink-mid);
  transition: color .2s var(--ease);
}
.nav-links a:hover { color: var(--ink); }
.nav-links a.is-current { color: var(--accent-ink); }

/* theme toggle */
.theme-toggle {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--ink-mid);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: .4rem .7rem .4rem .55rem;
  cursor: pointer;
  transition: border-color .2s var(--ease), color .2s var(--ease);
}
.theme-toggle:hover { border-color: var(--accent); color: var(--ink); }
.theme-toggle .ico { width: 15px; height: 15px; display: block; }

@media (max-width: 680px) {
  .nav-links a[data-collapse] { display: none; }
  .theme-toggle .label { display: none; }
}

/* ============================================================
   Hero
   ============================================================ */
.hero {
  padding-top: clamp(3rem, 6vw, 5.5rem);
  padding-bottom: var(--step);
  position: relative;
  overflow: hidden;
}
/* faint frequency-scale ticks behind the hero */
.hero::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 100%;
  background-image: repeating-linear-gradient(
    to right,
    var(--line-soft) 0, var(--line-soft) 1px,
    transparent 1px, transparent 56px);
  opacity: .5;
  -webkit-mask-image: linear-gradient(to bottom, black, transparent 70%);
  mask-image: linear-gradient(to bottom, black, transparent 70%);
  pointer-events: none;
}
.hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: 1.02fr 1fr;
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: center;
}
.hero h1 {
  font-size: clamp(2.9rem, 2rem + 4.4vw, 5rem);
  letter-spacing: -0.025em;
  margin: .2rem 0 .1rem;
}
.hero .tagline {
  font-family: var(--font-mono);
  font-size: clamp(1rem, .9rem + .6vw, 1.35rem);
  color: var(--accent-ink);
  letter-spacing: .01em;
  margin: 0 0 1.4rem;
}
.hero p.lede {
  color: var(--ink-mid);
  font-size: clamp(1.05rem, 1rem + .35vw, 1.22rem);
  max-width: 44ch;
  margin-bottom: 1.9rem;
}
.hero-cta { display: flex; flex-wrap: wrap; gap: .8rem; align-items: center; }
.hero-meta {
  margin-top: 1.5rem;
  font-family: var(--font-mono);
  font-size: .78rem;
  color: var(--ink-dim);
  letter-spacing: .03em;
  display: flex;
  flex-wrap: wrap;
  gap: .4rem 1.1rem;
}
.hero-meta b { color: var(--ink-mid); font-weight: 500; }

@media (max-width: 880px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero .window { order: -1; }
}

/* ============================================================
   App-window mock (the signature element)
   ============================================================ */
.window {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--surface);
  box-shadow: var(--shadow);
  overflow: hidden;
  font-family: var(--font-mono);
}
.window__bar {
  display: flex;
  align-items: center;
  gap: .5rem;
  padding: .7rem .9rem;
  background: var(--surface-2);
  border-bottom: 1px solid var(--line-soft);
}
.window__dots { display: inline-flex; gap: .4rem; }
.window__dots i {
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--line);
  display: block;
}
.window__title {
  font-size: .74rem;
  color: var(--ink-dim);
  letter-spacing: .08em;
  margin-left: .3rem;
}
.window__tabs {
  margin-left: auto;
  display: flex;
  gap: 1.1rem;
  font-size: .72rem;
  color: var(--ink-dim);
  letter-spacing: .05em;
}
.window__tabs .on { color: var(--accent-ink); }

/* waveform strip */
.wave {
  height: 42px;
  background: var(--bg-tint);
  border-bottom: 1px solid var(--line-soft);
  overflow: hidden;
  position: relative;
}
.wave svg { display: block; height: 100%; width: 200%; }
.wave polyline { fill: none; stroke: var(--accent); stroke-width: 1.6; opacity: .85; }
.wave .track { animation: scroll-x 9s linear infinite; }
@keyframes scroll-x { from { transform: translateX(0); } to { transform: translateX(-50%); } }

/* transcript */
.transcript {
  padding: 1rem 1.1rem 1.15rem;
  font-size: .82rem;
  line-height: 1.75;
  min-height: 218px;
}
.transcript .line { white-space: pre-wrap; word-break: break-word; }
.transcript .rx { color: var(--signal); }
.transcript .tx { color: var(--ink); }
.transcript .rx::before,
.transcript .tx::before {
  font-size: .7rem;
  opacity: .6;
  margin-right: .55rem;
}
.transcript .rx::before { content: "RX"; color: var(--signal); }
.transcript .tx::before { content: "TX"; color: var(--accent-ink); }
.caret {
  display: inline-block;
  width: 8px; height: 1.05em;
  background: var(--accent);
  vertical-align: text-bottom;
  margin-left: 2px;
  animation: blink 1.1s steps(1) infinite;
}
@keyframes blink { 50% { opacity: 0; } }

/* status bar */
.window__status {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  padding: .6rem .9rem;
  border-top: 1px solid var(--line-soft);
  background: var(--surface-2);
  font-size: .74rem;
  letter-spacing: .04em;
  color: var(--ink-mid);
}
.status-led {
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  color: var(--ink);
}
.status-led i {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 8px 1px color-mix(in srgb, var(--green) 70%, transparent);
  animation: pulse 2.2s var(--ease) infinite;
}
.status-freq { color: var(--accent-ink); font-size: .84rem; letter-spacing: .02em; }
.status-sep { margin-left: auto; color: var(--ink-dim); }
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: .45; } }

@media (prefers-reduced-motion: reduce) {
  .wave .track, .status-led i, .caret { animation: none; }
  .wave .track { transform: none; }
}

/* ============================================================
   Section scaffolding
   ============================================================ */
.section { padding-block: var(--step); }
.section--tint { background: var(--bg-tint); border-block: 1px solid var(--line-soft); }
.section-head { max-width: 60ch; margin-bottom: clamp(2rem, 4vw, 3.2rem); }
.section-head h2 { font-size: clamp(1.9rem, 1.4rem + 2vw, 2.9rem); margin-bottom: .9rem; }

/* ============================================================
   Feature grid
   ============================================================ */
.features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.feature {
  background: var(--surface);
  padding: 1.7rem 1.6rem 1.9rem;
  transition: background-color .25s var(--ease);
}
.feature:hover { background: var(--surface-2); }
.feature .tag {
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .16em;
  color: var(--accent-ink);
  display: block;
  margin-bottom: 1.1rem;
}
.feature h3 { font-size: 1.28rem; margin-bottom: .55rem; letter-spacing: -0.01em; }
.feature p { color: var(--ink-mid); font-size: .96rem; line-height: 1.62; }

@media (max-width: 860px) { .features { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .features { grid-template-columns: 1fr; } }

/* quiet "details" strip */
.details {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(1.5rem, 4vw, 3rem);
  margin-top: clamp(2rem, 4vw, 3rem);
}
.detail .tag {
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .16em;
  color: var(--ink-dim);
  display: block;
  margin-bottom: .5rem;
}
.detail h4 { font-family: var(--font-display); font-size: 1.05rem; margin: 0 0 .3rem; }
.detail p { color: var(--ink-mid); font-size: .92rem; }
@media (max-width: 620px) { .details { grid-template-columns: 1fr; gap: 1.6rem; } }

/* ============================================================
   QSL / images showcase
   ============================================================ */
.showcase-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
}
@media (max-width: 820px) { .showcase-grid { grid-template-columns: 1fr; } }

.qsl {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--surface);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.qsl__chrome {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: .7rem .95rem;
  background: var(--surface-2);
  border-bottom: 1px solid var(--line-soft);
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .08em;
}
.qsl__win { color: var(--ink-dim); text-transform: uppercase; }
.qsl__recv {
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  color: var(--ink-mid);
  text-transform: uppercase;
}
.qsl__recv i {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 7px 0 color-mix(in srgb, var(--green) 65%, transparent);
}
.qsl__mount {
  padding: clamp(12px, 2.4vw, 22px);
  background: var(--surface);
}
.qsl__img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1200 / 901;
  object-fit: cover;
  border: 1px solid var(--line-soft);
  border-radius: 4px;
  box-shadow: 0 2px 8px -2px rgba(0, 0, 0, .28);
}
.qsl__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .3rem .9rem;
  padding: .7rem .95rem;
  background: var(--surface-2);
  border-top: 1px solid var(--line-soft);
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .03em;
  color: var(--ink-mid);
}
.qsl__logged {
  color: var(--accent-ink);
  text-transform: uppercase;
  letter-spacing: .1em;
  font-size: .68rem;
}

/* ============================================================
   Requirements
   ============================================================ */
.req-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 0; }
.req {
  display: grid;
  grid-template-columns: 3.4rem 1fr;
  gap: 1.2rem;
  padding: 1.35rem 0;
  border-top: 1px solid var(--line-soft);
  align-items: start;
}
.req:last-child { border-bottom: 1px solid var(--line-soft); }
.req .num { font-family: var(--font-mono); font-size: .8rem; color: var(--accent-ink); padding-top: .2rem; letter-spacing: .06em; }
.req h4 { font-family: var(--font-display); font-size: 1.15rem; margin: 0 0 .25rem; }
.req p { color: var(--ink-mid); font-size: .96rem; max-width: 60ch; }
.req code {
  font-family: var(--font-mono);
  font-size: .85em;
  background: var(--surface-2);
  border: 1px solid var(--line-soft);
  border-radius: 5px;
  padding: .05em .4em;
  color: var(--accent-ink);
}

/* tested-modems list (extend by adding .chip items) */
.tested-label {
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--ink-dim);
  margin: 1.1rem 0 .7rem;
}
.chips {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: .55rem;
}
.chip {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  font-family: var(--font-mono);
  font-size: .82rem;
  letter-spacing: .02em;
  color: var(--ink);
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: .38rem .85rem;
}
.chip::before {
  content: "";
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 6px 0 color-mix(in srgb, var(--green) 60%, transparent);
  flex: none;
}

/* ============================================================
   Contact form
   ============================================================ */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: start;
}
@media (max-width: 820px) { .contact-grid { grid-template-columns: 1fr; } }

.contact-form { display: grid; gap: 1.1rem; }
.field { display: grid; gap: .4rem; }
.field label {
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--ink-dim);
}
.field input,
.field textarea {
  width: 100%;
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--ink);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: .7rem .85rem;
  transition: border-color .2s var(--ease), box-shadow .2s var(--ease);
}
.field textarea { resize: vertical; min-height: 128px; line-height: 1.55; }
.field input::placeholder,
.field textarea::placeholder { color: var(--ink-dim); opacity: .85; }
.field input:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 22%, transparent);
}
.contact-actions { display: flex; align-items: center; gap: 1rem; flex-wrap: wrap; margin-top: .2rem; }
.c-note { font-family: var(--font-mono); font-size: .76rem; color: var(--accent-ink); letter-spacing: .03em; }
.c-note--ok { color: var(--ok); }
.c-note--err { color: var(--err); }
.c-fallback { font-family: var(--font-mono); font-size: .72rem; color: var(--ink-dim); letter-spacing: .02em; margin: .3rem 0 0; }

/* Honeypot field — visually and functionally hidden from people. */
.hp {
  position: absolute !important;
  left: -9999px !important;
  width: 1px; height: 1px;
  overflow: hidden;
}

.btn:disabled,
.btn[disabled] { opacity: .55; cursor: default; transform: none; }

/* ============================================================
   Newsletter signup
   ============================================================ */
.newsletter-form { display: grid; gap: .7rem; justify-items: center; }
.newsletter-row {
  display: flex;
  gap: .6rem;
  width: 100%;
  max-width: 26rem;
}
.newsletter-row input {
  flex: 1 1 auto;
  min-width: 0;
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--ink);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: .7rem .85rem;
  transition: border-color .2s var(--ease), box-shadow .2s var(--ease);
}
.newsletter-row input::placeholder { color: var(--ink-dim); opacity: .85; }
.newsletter-row input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 22%, transparent);
}
.newsletter-row .btn { flex: 0 0 auto; }
.newsletter-row--names input#nl-callsign { flex: 0 1 10rem; }
@media (max-width: 480px) {
  .newsletter-row { flex-direction: column; }
  .newsletter-row--names input#nl-callsign { flex: 1 1 auto; }
}

/* ============================================================
   Get / download
   ============================================================ */
.get {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--surface);
  padding: clamp(1.8rem, 4vw, 2.8rem);
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: clamp(1.6rem, 4vw, 3rem);
  align-items: center;
}
.get h2 { font-size: clamp(1.7rem, 1.3rem + 1.6vw, 2.4rem); margin-bottom: .7rem; }
.get p { color: var(--ink-mid); max-width: 46ch; }
.get-actions { display: flex; flex-direction: column; gap: .8rem; }
.get-actions .btn { justify-content: center; }
.get-actions .note { font-family: var(--font-mono); font-size: .72rem; color: var(--ink-dim); letter-spacing: .03em; text-align: center; margin-top: .2rem; }
@media (max-width: 720px) { .get { grid-template-columns: 1fr; } }

/* Pre-release status panel (replaces the download buttons during alpha/beta) */
.get-status__list { display: grid; grid-template-columns: auto 1fr; gap: .55rem 1.1rem; margin: 0 0 .4rem; padding: 1rem 1.1rem; border: 1px solid var(--line); border-radius: var(--radius); background: var(--bg-tint); align-items: center; }
.get-status__list dt { font-family: var(--font-mono); font-size: .64rem; letter-spacing: .14em; text-transform: uppercase; color: var(--ink-dim); }
.get-status__list dd { margin: 0; color: var(--ink); font-size: .95rem; }
.get-status__pill { display: inline-block; font-family: var(--font-mono); font-size: .66rem; letter-spacing: .12em; text-transform: uppercase; color: #1a1206; background: var(--accent); border-radius: 999px; padding: .2rem .65rem; }
.release__status { color: var(--ink); border-left: 3px solid var(--accent); padding: .15rem 0 .15rem .8rem; margin: 1.2rem 1.5rem 0; }
.get-copy p + p { margin-top: .8rem; }

/* ============================================================
   Support strip
   ============================================================ */
.support-strip {
  display: flex;
  gap: 1.5rem;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
  padding: 1.5rem 1.7rem;
  background: var(--surface);
}
.support-strip p { color: var(--ink-mid); max-width: 60ch; }
.support-strip strong { color: var(--ink); font-weight: 600; }

/* ============================================================
   On the Air alerts card (Pushover) — homepage + On the Air page
   ============================================================ */
.alerts-card {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
  gap: clamp(1.4rem, 3vw, 2.6rem);
  align-items: center;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--surface);
  box-shadow: var(--shadow);
  padding: clamp(1.4rem, 3vw, 2.2rem);
  margin-top: clamp(1.4rem, 3vw, 2rem);
}
@media (prefers-color-scheme: dark) { :root:not([data-theme]) .alerts-card { background: var(--surface-2); border-color: rgba(244,234,217,.16); } }
:root[data-theme="dark"] .alerts-card { background: var(--surface-2); border-color: rgba(244,234,217,.16); }
.alerts-card .tag { font-family: var(--font-mono); font-size: .68rem; letter-spacing: .16em; color: var(--accent-ink); display: block; margin-bottom: .7rem; }
.alerts-card h3 { font-size: clamp(1.35rem, 1.1rem + 1vw, 1.75rem); margin: 0 0 .7rem; }
.alerts-card > div > p { color: var(--ink-mid); margin: 0 0 1rem; max-width: 58ch; }
.alerts-card ol { margin: 0 0 1.3rem; padding-left: 1.3rem; color: var(--ink-mid); display: grid; gap: .35rem; }
.alerts-card ol strong { color: var(--ink); font-weight: 600; }
.alerts-card a:not(.btn) { color: var(--accent-ink); }
.alerts-card .actions { display: flex; gap: .7rem; flex-wrap: wrap; align-items: center; }
.alerts-card .fine { font-family: var(--font-mono); font-size: .72rem; color: var(--ink-dim); letter-spacing: .02em; margin: 1rem 0 0; max-width: 62ch; }

/* "What an alert looks like" examples (illustrative, not screenshots) */
.push-demo { display: grid; gap: .9rem; }
.push-demo .demo-head { font-family: var(--font-mono); font-size: .68rem; letter-spacing: .16em; text-transform: uppercase; color: var(--ink-dim); margin: 0; }
.push-demo figure { margin: 0; display: grid; gap: .35rem; }
.push-demo figcaption { font-size: .85rem; color: var(--ink-mid); font-weight: 500; }
.push-demo .note {
  border-radius: 14px;
  background: var(--bg-tint);
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  padding: .75rem .95rem .8rem;
  box-shadow: 0 10px 24px -18px rgba(0,0,0,.45);
}
.push-demo .app { font-family: var(--font-mono); font-size: .62rem; letter-spacing: .1em; text-transform: uppercase; color: var(--ink-dim); display: flex; justify-content: space-between; gap: .5rem; }
.push-demo .ttl { font-weight: 600; color: var(--ink); margin: .25rem 0 .2rem; font-size: .98rem; }
.push-demo .body { font-size: .86rem; color: var(--ink-mid); line-height: 1.45; }
.push-demo .demo-foot { font-family: var(--font-mono); font-size: .68rem; color: var(--ink-dim); margin: 0; letter-spacing: .02em; }
@media (max-width: 760px) { .alerts-card { grid-template-columns: 1fr; } }

/* ============================================================
   Support page specifics
   ============================================================ */
.support-hero { padding-top: clamp(2.5rem, 6vw, 4.5rem); padding-bottom: clamp(2rem,4vw,3rem); }
.support-hero h1 { font-size: clamp(2.4rem, 1.8rem + 3vw, 3.8rem); margin: .3rem 0 .8rem; }
.support-hero p { color: var(--ink-mid); font-size: clamp(1.05rem,1rem+.4vw,1.25rem); max-width: 54ch; }

.stance {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-top: 2rem;
}
.stance .cell { background: var(--surface); padding: 1.6rem 1.6rem 1.8rem; }
.stance .tag { font-family: var(--font-mono); font-size: .68rem; letter-spacing: .16em; color: var(--accent-ink); display: block; margin-bottom: .8rem; }
.stance h3 { font-size: 1.15rem; margin-bottom: .45rem; }
.stance p { color: var(--ink-mid); font-size: .95rem; }
@media (max-width: 640px) { .stance { grid-template-columns: 1fr; } }

.donate {
  margin-top: clamp(2.5rem, 5vw, 4rem);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(120% 140% at 100% 0%, var(--accent-weak), transparent 55%),
    var(--surface);
  padding: clamp(2rem, 5vw, 3.2rem);
  text-align: center;
}
.donate h2 { font-size: clamp(1.7rem,1.3rem+1.6vw,2.4rem); margin-bottom: .8rem; }
.donate p { color: var(--ink-mid); max-width: 52ch; margin: 0 auto 1.8rem; }
.donate .btn { margin-inline: .3rem; }
.donate .fine { font-family: var(--font-mono); font-size: .72rem; color: var(--ink-dim); margin-top: 1.4rem; letter-spacing: .03em; }

.donate-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: .8rem;
  justify-content: center;
}
.donate-buttons .btn { justify-content: center; margin-inline: 0; }
.pay-hint {
  font-family: var(--font-mono);
  font-size: .64rem;
  letter-spacing: .06em;
  opacity: .82;
  padding-left: .55rem;
  border-left: 1px solid color-mix(in srgb, currentColor 35%, transparent);
}
.donate-plain {
  display: inline-block;
  margin-top: 1.35rem;
  font-family: var(--font-mono);
  font-size: .8rem;
  letter-spacing: .02em;
  color: var(--ink-mid);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  padding-bottom: 2px;
  transition: color .2s var(--ease), border-color .2s var(--ease);
}
.donate-plain:hover { color: var(--ink); border-color: var(--accent); }
.donate-note {
  font-family: var(--font-mono);
  font-size: .76rem;
  color: var(--accent-ink);
  letter-spacing: .03em;
  margin: 1rem 0 0;
  min-height: 1em;
}

/* ============================================================
   Support page — releases, guides, FAQ
   ============================================================ */
.release {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--surface);
  overflow: hidden;
}
.release__head {
  display: flex;
  align-items: center;
  gap: .9rem;
  flex-wrap: wrap;
  padding: 1.15rem 1.5rem;
  background: var(--surface-2);
  border-bottom: 1px solid var(--line-soft);
}
.release__ver { font-family: var(--font-mono); font-size: 1.1rem; color: var(--ink); letter-spacing: .02em; }
.release__date { font-family: var(--font-mono); font-size: .78rem; color: var(--ink-dim); }
.release__badge {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: .62rem;
  text-transform: uppercase;
  letter-spacing: .14em;
  color: #1a1206;
  background: var(--accent);
  border-radius: 999px;
  padding: .28rem .65rem;
}
.release__meta { font-family: var(--font-mono); font-size: .8rem; color: var(--ink-mid); padding: 1.1rem 1.5rem 0; }
.release__notes { padding: 1.1rem 1.5rem 0; }
.release__notes h4 {
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--ink-dim);
  margin: 0 0 .7rem;
}
.release__notes ul { margin: 0; padding-left: 1.15rem; color: var(--ink-mid); font-size: .96rem; }
.release__notes li { margin-bottom: .4rem; }
.release__actions { padding: 1.35rem 1.5rem 1.5rem; }
.release__older { font-family: var(--font-mono); font-size: .76rem; color: var(--ink-dim); margin: 1.2rem 0 0; letter-spacing: .02em; }

.guides {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.guide {
  display: block;
  background: var(--surface);
  padding: 1.5rem 1.55rem 1.6rem;
  text-decoration: none;
  color: inherit;
  transition: background-color .2s var(--ease);
}
.guide:hover { background: var(--surface-2); }
.guide h3 { font-size: 1.1rem; margin: 0 0 .45rem; display: flex; align-items: center; gap: .5rem; }
.guide .arrow { color: var(--accent-ink); transition: transform .2s var(--ease); }
.guide:hover .arrow { transform: translateX(3px); }
.guide p { color: var(--ink-mid); font-size: .92rem; margin: 0; }
@media (max-width: 820px) { .guides { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 540px) { .guides { grid-template-columns: 1fr; } }

.faq { border-top: 1px solid var(--line-soft); }
.faq details { border-bottom: 1px solid var(--line-soft); }
.faq summary {
  cursor: pointer;
  list-style: none;
  padding: 1.15rem 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.2rem;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.08rem;
  color: var(--ink);
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+";
  font-family: var(--font-mono);
  color: var(--accent-ink);
  font-size: 1.3rem;
  line-height: 1;
  flex: none;
}
.faq details[open] summary::after { content: "\2013"; }
.faq p { color: var(--ink-mid); padding: 0 0 1.25rem; max-width: 70ch; margin: 0; }
.faq a { color: var(--accent-ink); }

/* ============================================================
   Footer
   ============================================================ */
.site-footer {
  border-top: 1px solid var(--line-soft);
  background: var(--bg-tint);
  padding-block: clamp(2.5rem, 5vw, 3.5rem);
}
.footer-grid {
  display: flex;
  gap: 2rem 3rem;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: flex-start;
}
.footer-brand { max-width: 34ch; }
.footer-brand .brand { margin-bottom: .8rem; }
.footer-brand p { color: var(--ink-dim); font-size: .88rem; }
.footer-cols { display: flex; gap: 3rem; flex-wrap: wrap; }
.footer-col h5 {
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--ink-dim);
  margin: 0 0 .9rem;
  font-weight: 500;
}
.footer-col a, .footer-col span {
  display: block;
  text-decoration: none;
  color: var(--ink-mid);
  font-size: .9rem;
  margin-bottom: .55rem;
  transition: color .2s var(--ease);
}
.footer-col a:hover { color: var(--accent-ink); }

.disclaimer {
  margin-top: 2.4rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line-soft);
  font-family: var(--font-mono);
  font-size: .72rem;
  line-height: 1.7;
  letter-spacing: .02em;
  color: var(--ink-dim);
  display: flex;
  flex-wrap: wrap;
  gap: .4rem 1.5rem;
  justify-content: space-between;
}
.callsign { color: var(--accent-ink); }