/* time.tgabor.eu — no external resources, light and dark themes */

:root {
  --bg: #f7f8fb;
  --bg-alt: #eef1f7;
  --surface: #ffffff;
  --text: #0f172a;
  --muted: #526077;
  --border: #dbe1ec;
  --accent: #0e7c66;
  --accent-strong: #0a6553;
  --accent-soft: #d9f2ec;
  --on-accent: #ffffff;
  --term-bg: #0b1220;
  --term-text: #cfe9e2;
  --term-dim: #6b7c93;
  --term-otm: #ffd166;
  --term-modem: #7cc4ff;
  --shadow: 0 1px 2px rgba(15, 23, 42, .06), 0 8px 24px rgba(15, 23, 42, .06);
  --radius: 14px;
  --mono: ui-monospace, "SFMono-Regular", "JetBrains Mono", Menlo, Consolas, "Liberation Mono", monospace;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b1220;
    --bg-alt: #0f1829;
    --surface: #131d31;
    --text: #e6edf7;
    --muted: #93a2b8;
    --border: #22304a;
    --accent: #3ccfaa;
    --accent-strong: #5fe0bf;
    --accent-soft: #123a33;
    --on-accent: #04241c;
    --term-bg: #070c16;
    --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 8px 24px rgba(0, 0, 0, .25);
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 72px; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.6 var(--sans);
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--accent-strong); }
code, kbd, pre { font-family: var(--mono); }
code { font-size: .92em; }
kbd {
  display: inline-block; min-width: 1.6em; padding: 0 .35em;
  border: 1px solid var(--border); border-bottom-width: 2px; border-radius: 5px;
  background: var(--surface); color: var(--text);
  font-size: .85em; line-height: 1.5; text-align: center;
}
h1, h2, h3 { line-height: 1.15; letter-spacing: -.02em; margin: 0 0 .5em; }
h1 { font-size: clamp(2.3rem, 5.5vw, 3.8rem); font-weight: 800; }
h2 { font-size: clamp(1.7rem, 3.4vw, 2.4rem); font-weight: 750; }
h3 { font-size: 1.15rem; font-weight: 700; }
p { margin: 0 0 1em; }

.wrap { max-width: 1160px; margin: 0 auto; padding: 0 16px; }
@media (min-width: 720px) { .wrap { padding: 0 32px; } }
.narrow { max-width: 820px; }

.skip { position: absolute; left: -999px; top: 8px; z-index: 100; }
.skip:focus { left: 8px; background: var(--surface); padding: 8px 12px; border-radius: 8px; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; gap: .5em;
  padding: .7em 1.15em; border-radius: 10px;
  border: 1px solid var(--border); background: var(--surface); color: var(--text);
  font: inherit; font-weight: 600; text-decoration: none; cursor: pointer;
  transition: background .15s, border-color .15s, transform .1s;
}
.btn:hover { border-color: var(--accent); color: var(--text); }
.btn:active { transform: translateY(1px); }
.btn:disabled { opacity: .45; cursor: not-allowed; }
.btn-primary { background: var(--accent); border-color: var(--accent); color: var(--on-accent); }
.btn-primary:hover { background: var(--accent-strong); border-color: var(--accent-strong); color: var(--on-accent); }
.btn-small { padding: .4em .9em; font-size: .92rem; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }

/* Nav */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--bg) 85%, transparent);
  backdrop-filter: saturate(1.4) blur(10px);
  -webkit-backdrop-filter: saturate(1.4) blur(10px);
  border-bottom: 1px solid var(--border);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 60px; gap: 16px; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--text); font-weight: 750; text-decoration: none; }
.brand svg { color: var(--accent); }
.nav-links { display: flex; align-items: center; gap: 22px; list-style: none; margin: 0; padding: 0; }
.nav-links a:not(.btn) { color: var(--muted); text-decoration: none; font-weight: 550; font-size: .95rem; }
.nav-links a:not(.btn):hover { color: var(--text); }
@media (max-width: 860px) { .nav-links li:not(:last-child) { display: none; } }

/* Hero */
.hero {
  padding: 72px 0 80px;
  background:
    radial-gradient(900px 400px at 85% 10%, var(--accent-soft), transparent 70%),
    var(--bg);
}
.hero-grid { display: grid; gap: 48px; align-items: center; }
@media (min-width: 980px) { .hero-grid { grid-template-columns: 1.05fr 1fr; } }
.eyebrow { color: var(--accent); font-weight: 700; font-size: .85rem; letter-spacing: .08em; text-transform: uppercase; margin-bottom: .8em; }
.lead { font-size: 1.15rem; color: var(--muted); max-width: 36em; }
.cta { display: flex; flex-wrap: wrap; gap: 12px; margin: 28px 0 32px; }

/* Two cards side by side; stacked only on phones */
.phones { display: grid; grid-template-columns: repeat(2, max-content); gap: 12px; }
@media (max-width: 520px) { .phones { grid-template-columns: 1fr; } }
.phone {
  display: inline-flex; flex-direction: column; gap: 2px;
  padding: 12px 16px; border-radius: var(--radius);
  border: 1px solid var(--border); background: var(--surface); box-shadow: var(--shadow);
  text-decoration: none; color: var(--text);
}
.phone-label { font-size: .72rem; color: var(--muted); font-weight: 600; text-transform: uppercase; letter-spacing: .06em; white-space: nowrap; }
.phone-number { font-family: var(--mono); font-size: clamp(1.2rem, 2.2vw, 1.45rem); font-weight: 700; color: var(--accent); white-space: nowrap; }

/* Live ticker */
.ticker {
  margin: 0; min-width: 0;
  background: var(--term-bg); color: var(--term-text);
  border-radius: var(--radius); box-shadow: var(--shadow);
  border: 1px solid #1d2a42; overflow: hidden;
}
.ticker figcaption {
  display: flex; align-items: center; gap: 8px;
  padding: 12px 18px; border-bottom: 1px solid #1d2a42;
  color: var(--term-dim); font-size: .85rem;
}
.dot { width: 8px; height: 8px; border-radius: 50%; background: #3ccfaa; box-shadow: 0 0 0 0 rgba(60, 207, 170, .6); animation: pulse 1s infinite; }
@keyframes pulse { 0% { box-shadow: 0 0 0 0 rgba(60, 207, 170, .6); } 100% { box-shadow: 0 0 0 8px rgba(60, 207, 170, 0); } }
@media (prefers-reduced-motion: reduce) { .dot { animation: none; } }
.ticker pre { margin: 0; padding: 18px; font-size: clamp(.62rem, 1.45vw, .86rem); overflow-x: auto; line-height: 1.7; }
.ticker .dim { color: var(--term-dim); }
.otm { color: var(--term-otm); font-weight: 700; }
.otm.flash { text-shadow: 0 0 10px var(--term-otm); }
.ticker-meta { display: grid; grid-template-columns: repeat(3, 1fr); margin: 0; border-top: 1px solid #1d2a42; }
.ticker-meta div { padding: 12px 18px; }
.ticker-meta div + div { border-left: 1px solid #1d2a42; }
.ticker-meta dt { font-size: .72rem; text-transform: uppercase; letter-spacing: .08em; color: var(--term-dim); }
.ticker-meta dd { margin: 0; font-family: var(--mono); font-size: 1.05rem; color: #fff; }

/* Sections */
.section { padding: 88px 0; }
.section.alt { background: var(--bg-alt); }
.section-head { max-width: 760px; margin-bottom: 40px; }
.section-head p:not(.eyebrow) { color: var(--muted); font-size: 1.05rem; }
.sub { margin-top: 56px; }
.sub-first { margin-top: 0; }
.dial-grid + .sub { margin-top: 48px; }
.dial-grid { margin-top: 18px; }

/* Demo */
.demo { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); padding: 16px; }
.demo-toolbar { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 14px; margin-bottom: 16px; }
.check { display: inline-flex; align-items: center; gap: 6px; color: var(--muted); font-size: .92rem; cursor: pointer; }
.check input { accent-color: var(--accent); width: 16px; height: 16px; }
.demo-panes { display: grid; gap: 16px; }
@media (min-width: 980px) { .demo-panes { grid-template-columns: 1.15fr 1fr; } }
.pane { background: var(--term-bg); border-radius: 10px; overflow: hidden; border: 1px solid #1d2a42; display: flex; flex-direction: column; min-width: 0; }
.pane-head { display: flex; align-items: center; gap: 12px; white-space: nowrap; overflow: hidden; padding: 10px 14px; border-bottom: 1px solid #1d2a42; color: var(--term-dim); font: .8rem var(--mono); }
.lights { display: inline-flex; gap: 6px; }
.lights i { width: 10px; height: 10px; border-radius: 50%; background: #2a3954; }
.pane-head > span:nth-child(2) { overflow: hidden; text-overflow: ellipsis; }
.status { flex-shrink: 0; margin-left: auto; padding: 2px 8px; border-radius: 999px; background: #1a263d; color: var(--term-dim); }
.status.on { background: #0f3b31; color: #5fe0bf; }
.term {
  margin: 0; padding: 14px 16px; height: 400px; overflow: auto;
  color: var(--term-text); font-size: clamp(.56rem, 2.4vw, .78rem); line-height: 1.55; white-space: pre;
}
.term, .ticker pre, .code { scrollbar-color: #2a3954 transparent; scrollbar-width: thin; }
.term-log { white-space: pre-wrap; word-break: break-word; height: 340px; }
.term .m { color: var(--term-modem); }
.term .d { color: var(--term-dim); }
.term .ok { color: #5fe0bf; }
.term .warn { color: #ffb86b; }
.clockbar { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid #1d2a42; }
.clockbar div { padding: 10px 14px; display: flex; flex-direction: column; }
.clockbar div + div { border-left: 1px solid #1d2a42; }
.clockbar span { font-size: .7rem; text-transform: uppercase; letter-spacing: .07em; color: var(--term-dim); }
.clockbar strong { font: 600 .95rem var(--mono); color: #fff; }

/* Flow diagram */
.flow { list-style: none; padding: 0; margin: 0 0 48px; display: grid; gap: 12px; counter-reset: none; }
@media (min-width: 900px) { .flow { grid-template-columns: repeat(5, 1fr); gap: 28px; } }
.flow li {
  position: relative; padding: 18px; border-radius: 12px; text-align: center;
  background: var(--surface); border: 1px solid var(--border); box-shadow: var(--shadow);
  display: flex; flex-direction: column; gap: 4px;
}
.flow li span { color: var(--muted); font-size: .88rem; }
.flow li:last-child { border-color: var(--accent); }
@media (min-width: 900px) {
  .flow li + li::before {
    content: ""; position: absolute; left: -28px; top: 50%; width: 28px; height: 2px;
    background: repeating-linear-gradient(90deg, var(--accent) 0 6px, transparent 6px 10px);
  }
}

.steps { display: grid; gap: 20px; }
@media (min-width: 720px) { .steps { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1100px) { .steps { grid-template-columns: repeat(5, 1fr); } }
.steps article { padding: 4px 0; }
.steps p { color: var(--muted); font-size: .95rem; }
.step-n {
  display: inline-grid; place-items: center; width: 32px; height: 32px; border-radius: 50%;
  background: var(--accent-soft); color: var(--accent); font-weight: 800; margin-bottom: 12px;
}

/* Cards */
.cards { display: grid; gap: 20px; }
@media (min-width: 720px) { .cards { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1040px) { .cards { grid-template-columns: repeat(3, 1fr); } }
.card {
  padding: 26px; border-radius: var(--radius);
  background: var(--surface); border: 1px solid var(--border);
  transition: border-color .2s, transform .2s;
}
.card:hover { border-color: var(--accent); transform: translateY(-2px); }
.card p { color: var(--muted); margin: 0; }
.ico { width: 36px; height: 36px; padding: 7px; border-radius: 10px; background: var(--accent-soft); stroke: var(--accent); fill: none; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; margin-bottom: 14px; }

/* Products */
.products { display: grid; gap: 24px; }
@media (min-width: 760px) { .products { grid-template-columns: 1fr 1fr; } }
@media (min-width: 1120px) { .products { grid-template-columns: repeat(3, 1fr); } }
.product {
  display: flex; flex-direction: column; gap: 4px; min-width: 0;
  padding: 28px; border-radius: var(--radius);
  background: var(--surface); border: 1px solid var(--border); box-shadow: var(--shadow);
}
.product > .btn { align-self: flex-start; margin-top: auto; }
.product-head { display: flex; align-items: center; gap: 12px; }
.product-head h3 { font: 800 1.6rem var(--mono); margin: 0; }
.tag { padding: 2px 10px; border-radius: 999px; background: var(--accent-soft); color: var(--accent); font-size: .78rem; font-weight: 700; text-transform: uppercase; letter-spacing: .06em; }
.product > p { color: var(--muted); margin-top: 10px; }
.ticks { list-style: none; padding: 0; margin: 0 0 18px; display: grid; gap: 8px; }
.ticks li { position: relative; padding-left: 28px; }
.ticks li::before {
  content: "\2713"; position: absolute; left: 0; top: .25em; width: 18px; height: 18px; border-radius: 50%;
  display: grid; place-items: center; background: var(--accent-soft); color: var(--accent);
  font-size: 11px; font-weight: 800; line-height: 1;
}

.code {
  margin: 0 0 20px; padding: 16px 18px; border-radius: 10px;
  background: var(--term-bg); color: var(--term-text); border: 1px solid #1d2a42;
  font-size: .84rem; line-height: 1.6; overflow-x: auto;
}
.code .c { color: var(--term-dim); }
.quickstart { margin-top: 40px; }

/* Dial in */
.dial-grid { display: grid; gap: 24px; align-items: start; }
@media (min-width: 940px) { .dial-grid { grid-template-columns: 1fr 1.2fr; } }
.dial-card { padding: 8px 24px; border-radius: var(--radius); background: var(--surface); border: 1px solid var(--border); box-shadow: var(--shadow); }
.specs { margin: 0; }
.specs div { display: flex; justify-content: space-between; gap: 16px; padding: 14px 0; flex-wrap: wrap; }
.specs div + div { border-top: 1px solid var(--border); }
.specs dt { color: var(--muted); }
.specs dd { margin: 0; font-weight: 650; text-align: right; }
.specs dd a { font-family: var(--mono); font-size: 1.1rem; text-decoration: none; }
.note { color: var(--muted); font-size: .95rem; }

.table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface); }
table { width: 100%; border-collapse: collapse; font-size: .95rem; }
th, td { padding: 12px 16px; text-align: left; vertical-align: top; }
th { font-size: .78rem; text-transform: uppercase; letter-spacing: .07em; color: var(--muted); background: var(--bg-alt); }
tbody tr + tr td { border-top: 1px solid var(--border); }
td:first-child { font-weight: 650; white-space: nowrap; }
td:nth-child(2) { white-space: nowrap; }

/* FAQ */
details { border-bottom: 1px solid var(--border); padding: 4px 0; }
summary { cursor: pointer; padding: 16px 0; font-weight: 650; font-size: 1.05rem; list-style: none; display: flex; justify-content: space-between; gap: 16px; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; color: var(--accent); font-size: 1.4rem; line-height: 1; transition: transform .2s; }
details[open] summary::after { transform: rotate(45deg); }
details p { color: var(--muted); margin: 0 0 18px; }

/* Footer */
.footer { padding: 40px 0; border-top: 1px solid var(--border); background: var(--bg); }
.footer-inner { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 24px; }
.footer p { color: var(--muted); margin: 4px 0 0; font-size: .92rem; }
.footer ul { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 8px 22px; }
.footer a { color: var(--muted); text-decoration: none; font-size: .92rem; }
.footer a:hover { color: var(--accent); }

/* Listen (utbd audio demo) */
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
.listen {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: clamp(16px, 3vw, 28px);
}
.listen-top { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 18px; }
.listen-controls { display: flex; flex-wrap: wrap; align-items: center; gap: 14px; }
.seg { display: inline-flex; border: 1px solid var(--border); border-radius: 10px; overflow: hidden; }
.seg input { position: absolute; opacity: 0; pointer-events: none; }
.seg span { display: block; padding: .55em 1em; font-weight: 650; color: var(--muted); cursor: pointer; }
.seg input:checked + span { background: var(--accent-soft); color: var(--accent); }
.seg input:focus-visible + span { outline: 3px solid var(--accent); outline-offset: -3px; }
.vol { display: inline-flex; align-items: center; gap: 8px; color: var(--muted); }
.vol input { accent-color: var(--accent); width: 120px; }
.listen-clock { text-align: right; }
@media (max-width: 640px) { .listen-clock { text-align: left; } }
.listen-clock span { display: block; font: 700 clamp(2rem, 5vw, 2.8rem)/1 var(--mono); letter-spacing: -.02em; }
.listen-clock small { color: var(--muted); font-size: .8rem; }

.minute { position: relative; margin: 28px 0 6px; }
.minute-track {
  position: relative; height: 46px; border-radius: 8px; overflow: hidden;
  background: var(--bg-alt); border: 1px solid var(--border);
}
.minute-track .seg-bar {
  position: absolute; top: 0; bottom: 0; display: flex; align-items: center; padding: 0 8px;
  font-size: .75rem; font-weight: 700; white-space: nowrap; overflow: hidden; color: #fff;
}
.seg-bar.marker { background: #e0a100; }
.seg-bar.hour { background: #e05d44; }
.seg-bar.tone { background: var(--accent); }
.seg-bar.t440 { background: #7a5af5; }
.seg-bar.voice { background: #2f7fd1; }
.seg-bar.id { background: #5b6b84; }
.minute-head {
  position: absolute; top: -6px; bottom: 18px; width: 2px; left: 0;
  background: var(--text); border-radius: 2px;
}
.minute-head::before { content: ""; position: absolute; top: -4px; left: -4px; width: 10px; height: 10px; border-radius: 50%; background: var(--text); }
.minute-scale { display: flex; justify-content: space-between; color: var(--muted); font: .72rem var(--mono); margin-top: 4px; }
.listen-now { min-height: 1.6em; margin: 10px 0 24px; font-weight: 600; }

.bcd-wrap { border-top: 1px solid var(--border); padding-top: 20px; }
.bcd-title { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px; font-size: .9rem; color: var(--muted); margin-bottom: 10px; }
.bcd-decoded { font-family: var(--mono); color: var(--text); }
.bcd { display: grid; grid-template-columns: repeat(60, 1fr); gap: 2px; height: 56px; align-items: end; }
.bcd i { display: block; border-radius: 2px 2px 0 0; background: var(--border); transition: background .15s; }
.bcd i.b0 { height: 22%; } .bcd i.b1 { height: 60%; } .bcd i.bp { height: 100%; } .bcd i.bh { height: 4%; }
.bcd i.done { background: var(--accent); opacity: .55; }
.bcd i.now { background: var(--accent); opacity: 1; }
.bcd-legend { display: flex; flex-wrap: wrap; gap: 6px 18px; margin-top: 10px; color: var(--muted); font-size: .82rem; }
.bcd-legend i { display: inline-block; width: 8px; margin-right: 6px; background: var(--accent); vertical-align: bottom; border-radius: 2px 2px 0 0; }
.bcd-legend i.b0 { height: 6px; } .bcd-legend i.b1 { height: 11px; } .bcd-legend i.bp { height: 16px; }

.hear { list-style: none; padding: 0; margin: 24px 0 8px; display: grid; gap: 10px 24px; }
@media (min-width: 760px) { .hear { grid-template-columns: 1fr 1fr; } }
.hear li { color: var(--muted); font-size: .95rem; }
.hear strong { display: block; color: var(--text); }

/* WWV format: decoding the time code */
.decode-grid { display: grid; gap: 24px; align-items: start; margin-top: 18px; }
@media (min-width: 940px) { .decode-grid { grid-template-columns: 1fr 1.1fr; } }
.decode-steps { margin: 0; padding: 0; list-style: none; counter-reset: dstep; display: grid; gap: 14px; }
.decode-steps li { counter-increment: dstep; position: relative; padding-left: 40px; color: var(--muted); }
.decode-steps li strong { color: var(--text); }
.decode-steps li::before {
  content: counter(dstep); position: absolute; left: 0; top: 0;
  width: 26px; height: 26px; border-radius: 50%; display: grid; place-items: center;
  background: var(--accent-soft); color: var(--accent); font-weight: 800; font-size: .85rem;
}