/* Radio Remote website. Plain CSS, no build step, no external fonts or scripts. Colours follow the app (dark navy + cyan). */
:root {
  --bg: #070d1a; --bg2: #0b1426; --card: #0f1b33; --line: #1d2c4a; --text: #e8eefc; --dim: #93a3c4;
  --cyan: #22d3ee; --cyan2: #0ea5c4; --green: #34d399; --yellow: #fbbf24; --red: #f43f5e; --purple: #a78bfa;
  --radius: 14px; --wrap: 1120px;
}
:root[data-theme="light"] {
  --bg: #f6f8fc; --bg2: #ffffff; --card: #ffffff; --line: #d9e1f0; --text: #0e1a33; --dim: #52607e;
  --cyan: #0891b2; --cyan2: #0e7490;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; -webkit-font-smoothing: antialiased; }
img, video { max-width: 100%; height: auto; display: block; }
a { color: var(--cyan); text-decoration: none; } a:hover { text-decoration: underline; }
h1, h2, h3 { line-height: 1.2; margin: 0 0 .5em; letter-spacing: -.01em; }
h1 { font-size: clamp(2rem, 5vw, 3.4rem); } h2 { font-size: clamp(1.5rem, 3.2vw, 2.2rem); } h3 { font-size: 1.15rem; }
p { margin: 0 0 1em; } ul, ol { padding-left: 1.3em; } li { margin: .25em 0; }
code, pre { font-family: ui-monospace, "SF Mono", Consolas, monospace; font-size: .92em; }
code { background: color-mix(in srgb, var(--cyan) 12%, transparent); padding: .1em .4em; border-radius: 6px; }
pre { background: #050a14; color: #d6e4ff; border: 1px solid var(--line); border-radius: 10px; padding: 14px 16px; overflow-x: auto; margin: 0 0 1.1em; position: relative; }
pre code { background: none; padding: 0; }
.wrap { width: min(var(--wrap), 100% - 32px); margin-inline: auto; }
.skip { position: absolute; left: -999px; } .skip:focus { left: 8px; top: 8px; background: var(--card); padding: 8px 12px; z-index: 99; }

/* header */
.site-header { position: sticky; top: 0; z-index: 50; background: color-mix(in srgb, var(--bg) 88%, transparent); backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
.site-header .wrap { display: flex; align-items: center; gap: 18px; min-height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; color: var(--text); font-size: 1.1rem; } .brand:hover { text-decoration: none; }
.brand img { width: 32px; height: 32px; border-radius: 8px; }
.nav { display: flex; gap: 4px; margin-left: auto; align-items: center; flex-wrap: wrap; }
.nav a { color: var(--dim); padding: 8px 12px; border-radius: 8px; font-weight: 600; font-size: .95rem; }
.nav a:hover, .nav a[aria-current="page"] { color: var(--text); background: var(--card); text-decoration: none; }
.nav .gh { border: 1px solid var(--line); color: var(--text); }
.menu-btn { display: none; margin-left: auto; background: var(--card); color: var(--text); border: 1px solid var(--line); border-radius: 8px; padding: 8px 12px; font: inherit; cursor: pointer; }
@media (max-width: 860px) {
  .menu-btn { display: block; }
  .nav { display: none; position: absolute; left: 0; right: 0; top: 64px; background: var(--bg2); border-bottom: 1px solid var(--line); padding: 10px 16px 16px; flex-direction: column; align-items: stretch; margin: 0; }
  .nav.open { display: flex; } .nav a { padding: 12px; }
}

/* buttons */
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 12px 20px; border-radius: 10px; font-weight: 700; border: 1px solid var(--line); background: var(--card); color: var(--text); cursor: pointer; font-size: 1rem; }
.btn:hover { text-decoration: none; border-color: var(--cyan); }
.btn.primary { background: linear-gradient(180deg, var(--cyan), var(--cyan2)); color: #04121a; border-color: transparent; }
.btn.primary:hover { filter: brightness(1.08); }
.btns { display: flex; gap: 12px; flex-wrap: wrap; margin: 22px 0 0; }

/* hero */
.hero { padding: 64px 0 40px; background: radial-gradient(1200px 500px at 70% -10%, color-mix(in srgb, var(--cyan) 18%, transparent), transparent), var(--bg); }
.hero .grid { display: grid; grid-template-columns: 1.05fr 1fr; gap: 40px; align-items: center; }
.hero p.lead { font-size: 1.2rem; color: var(--dim); max-width: 38em; }
.eyebrow { color: var(--cyan); font-weight: 800; letter-spacing: .12em; text-transform: uppercase; font-size: .8rem; margin-bottom: 10px; }
.shots { position: relative; }
.shots .desk { border-radius: 12px; border: 1px solid var(--line); box-shadow: 0 24px 60px rgba(0, 0, 0, .45); }
.shots .phone { position: absolute; right: -10px; bottom: -34px; width: 26%; border-radius: 18px; border: 3px solid #1b2a47; box-shadow: 0 18px 40px rgba(0, 0, 0, .55); }
@media (max-width: 900px) { .hero .grid { grid-template-columns: 1fr; } .shots .phone { right: 8px; } .hero { padding-top: 36px; } }

.facts { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin: 54px 0 0; }
.fact { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px 18px; }
.fact b { display: block; color: var(--cyan); font-size: 1.05rem; } .fact span { color: var(--dim); font-size: .92rem; }
@media (max-width: 820px) { .facts { grid-template-columns: 1fr 1fr; } }

/* sections */
section.block, article.block { padding: 64px 0; } section.alt { background: var(--bg2); border-block: 1px solid var(--line); }
.section-head { max-width: 46em; margin-bottom: 30px; } .section-head p { color: var(--dim); font-size: 1.08rem; }
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; }
.card h3 { display: flex; gap: 10px; align-items: center; } .card p { color: var(--dim); margin: 0; }
.card .ic { width: 38px; height: 38px; border-radius: 10px; display: grid; place-items: center; background: color-mix(in srgb, var(--cyan) 16%, transparent); color: var(--cyan); font-size: 1.2rem; flex: none; }
@media (max-width: 900px) { .cards { grid-template-columns: 1fr 1fr; } } @media (max-width: 600px) { .cards { grid-template-columns: 1fr; } }

/* video */
.video { border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line); background: #000; box-shadow: 0 20px 50px rgba(0, 0, 0, .4); }
.video video { width: 100%; height: auto; }

/* gallery */
.tabs { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 18px; }
.tabs button { background: var(--card); border: 1px solid var(--line); color: var(--dim); padding: 8px 14px; border-radius: 999px; font: inherit; font-weight: 600; cursor: pointer; }
.tabs button[aria-selected="true"] { color: #04121a; background: var(--cyan); border-color: transparent; }
.gal figure { margin: 0; } .gal img { border-radius: 12px; border: 1px solid var(--line); width: 100%; box-shadow: 0 16px 44px rgba(0, 0, 0, .4); }
.gal figcaption { color: var(--dim); margin-top: 12px; } .gal [hidden] { display: none; }
.gal .phones { display: flex; gap: 18px; justify-content: center; flex-wrap: wrap; } .gal .phones img { width: min(260px, 44%); border-radius: 22px; border: 3px solid #1b2a47; }
.note-sim { color: var(--dim); font-size: .85rem; margin-top: 8px; }

/* feature rows */
.row { display: grid; grid-template-columns: 1fr 1.1fr; gap: 40px; align-items: center; padding: 34px 0; }
.row.flip { grid-template-columns: 1.1fr 1fr; } .row.flip .txt { order: 2; }
.row img { border-radius: 12px; border: 1px solid var(--line); box-shadow: 0 16px 44px rgba(0, 0, 0, .4); }
.row .txt p, .row .txt li { color: var(--dim); } .row .txt li b { color: var(--text); }
@media (max-width: 860px) { .row, .row.flip { grid-template-columns: 1fr; gap: 20px; } .row.flip .txt { order: 0; } }

/* docs / steps */
.steps { counter-reset: s; list-style: none; padding: 0; }
.steps > li { counter-increment: s; position: relative; padding: 4px 0 18px 54px; }
.steps > li::before { content: counter(s); position: absolute; left: 0; top: 0; width: 38px; height: 38px; border-radius: 50%; background: var(--cyan); color: #04121a; font-weight: 800; display: grid; place-items: center; }
.callout { border: 1px solid color-mix(in srgb, var(--yellow) 50%, var(--line)); background: color-mix(in srgb, var(--yellow) 9%, transparent); border-radius: 12px; padding: 14px 18px; margin: 0 0 1.2em; }
.callout.info { border-color: color-mix(in srgb, var(--cyan) 50%, var(--line)); background: color-mix(in srgb, var(--cyan) 8%, transparent); }
.callout p:last-child { margin: 0; }
table { border-collapse: collapse; width: 100%; margin: 0 0 1.2em; } th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--line); vertical-align: top; } th { color: var(--dim); font-size: .85rem; text-transform: uppercase; letter-spacing: .06em; }
.tblwrap { overflow-x: auto; }
.pill { display: inline-block; padding: 2px 10px; border-radius: 999px; font-size: .8rem; font-weight: 700; border: 1px solid var(--line); }
.pill.ok { color: var(--green); border-color: color-mix(in srgb, var(--green) 50%, var(--line)); } .pill.exp { color: var(--yellow); border-color: color-mix(in srgb, var(--yellow) 50%, var(--line)); }

/* downloads */
.dl { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.dl .card { display: flex; flex-direction: column; gap: 10px; } .dl .card .btn { margin-top: auto; align-self: flex-start; }
.dl .meta { color: var(--dim); font-size: .88rem; }
@media (max-width: 760px) { .dl { grid-template-columns: 1fr; } }
.ver { display: inline-flex; gap: 8px; align-items: center; padding: 6px 14px; border-radius: 999px; background: var(--card); border: 1px solid var(--line); font-weight: 700; }
.ver i { width: 8px; height: 8px; border-radius: 50%; background: var(--green); }

/* blog */
.post-list { display: grid; gap: 16px; } .post-list a.card { color: inherit; } .post-list a.card:hover { border-color: var(--cyan); text-decoration: none; }
.post-meta { color: var(--dim); font-size: .9rem; } .prose { max-width: 46em; } .prose img { border-radius: 12px; border: 1px solid var(--line); margin: 1em 0; }
.prose figure { margin: 1em 0; } .prose figure img { margin: 0; } .prose figcaption { color: var(--dim); font-size: .9rem; margin-top: 6px; }
.prose blockquote { margin: 0 0 1em; padding: 4px 0 4px 16px; border-left: 3px solid var(--cyan); color: var(--dim); }
.prose hr { border: 0; border-top: 1px solid var(--line); margin: 2em 0; } .prose .back { margin-top: 2em; }

/* footer */
.site-footer { border-top: 1px solid var(--line); background: var(--bg2); padding: 36px 0; color: var(--dim); font-size: .94rem; }
.site-footer .cols { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 28px; } .site-footer h4 { color: var(--text); margin: 0 0 8px; } .site-footer a { color: var(--dim); display: block; margin: 4px 0; } .site-footer a:hover { color: var(--cyan); }
@media (max-width: 760px) { .site-footer .cols { grid-template-columns: 1fr; } }