/* terminal-radio website: product chrome over Stellar's content renderer. */

@font-face {
  font-family: 'Departure Mono';
  src: url('/fonts/DepartureMono-Regular.woff2') format('woff2');
  font-weight: normal;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Cubic 11';
  src: url('/fonts/Cubic_11.woff2') format('woff2');
  font-weight: normal;
  font-style: normal;
  font-display: swap;
  unicode-range: U+2E80-9FFF, U+3000-303F, U+FF00-FFEF;
}

:root,
:root[data-theme='dark'] {
  --background: #0d1117;
  --card: #161b22;
  --block: #21262d;
  --text-code: #d29922;
  --radio-green: #3fb950;
  --radio-blue: #2f81f7;
  --radio-amber: #d29922;
  --radio-red: #f85149;
  --radio-line: #30363d;
  --radio-muted: #8b949e;
  --navbar-height: 72px;
}

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

html {
  scroll-padding-top: calc(var(--navbar-height) + 24px);
}

body {
  min-width: 320px;
  margin: 0;
  overflow-x: hidden;
  background: var(--background);
}

body,
button,
input,
select,
textarea {
  font-family: 'Departure Mono', 'Cubic 11', ui-monospace, Menlo, Consolas, monospace !important;
}

body,
h1,
h2,
h3,
h4,
h5,
code,
pre {
  -webkit-font-smoothing: none;
  font-smooth: never;
}

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--radio-green);
  outline-offset: 4px;
}

.skip-link {
  position: fixed;
  z-index: 1000;
  top: 8px;
  left: 8px;
  padding: 8px 12px;
  color: #0d1117;
  background: var(--radio-green);
  transform: translateY(-150%);
}

.skip-link:focus {
  transform: translateY(0);
}

.site-navbar {
  position: sticky;
  z-index: 100;
  top: 0;
  height: var(--navbar-height);
  border: 0;
  background: rgba(13, 17, 23, 0.94);
  box-shadow: none;
  backdrop-filter: blur(16px);
}

.site-navbar.is-scrolled {
  border-bottom: 1px solid var(--radio-line);
}

.site-navbar__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  align-items: center;
  gap: clamp(16px, 3vw, 42px);
  width: min(1180px, calc(100% - 40px));
  height: 100%;
  margin: 0 auto;
}

.site-brand {
  display: inline-flex;
  min-width: 0;
  align-items: center;
  justify-self: start;
  gap: 12px;
  color: #f0f6fc;
  line-height: 1;
  white-space: nowrap;
}

.site-brand:hover {
  color: var(--radio-green);
}

.site-brand img {
  width: 36px;
  height: 36px;
  flex: 0 0 36px;
}

.site-brand__name {
  overflow: hidden;
  font-size: 1rem;
  text-overflow: clip;
}

.site-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(12px, 2.5vw, 32px);
  min-width: 0;
}

.site-nav a,
.language-switch,
.sound-toggle {
  color: var(--radio-muted);
  font-size: 0.875rem;
  line-height: 1;
  white-space: nowrap;
}

.site-nav a:hover,
.site-nav a[aria-current='page'],
.language-switch:hover,
.sound-toggle:hover {
  color: #f0f6fc;
}

.site-nav a[aria-current='page'] {
  text-decoration: underline;
  text-decoration-color: var(--radio-green);
  text-decoration-thickness: 2px;
  text-underline-offset: 8px;
}

.site-navbar__tools {
  display: inline-flex;
  align-items: center;
  justify-self: end;
  gap: 6px;
}

.language-switch,
.sound-toggle {
  display: inline-flex;
  width: 44px;
  height: 32px;
  align-items: center;
  justify-content: center;
}

.sound-toggle {
  border: 0;
  padding: 0;
  color: var(--radio-green);
  background: transparent;
  cursor: pointer;
  font-size: 0.625rem;
  letter-spacing: 0.08em;
}

.sound-toggle.is-muted {
  color: var(--radio-muted);
  text-decoration: line-through;
  text-decoration-thickness: 1px;
}

.language-switch {
  color: var(--radio-green);
}

.language-switch__label {
  display: block;
  font-size: 0.75rem;
  letter-spacing: 0.04em;
}

/* Stellar still renders content and metadata. Its sidebars and article banner
   are deliberately replaced by the product navbar above. */
#l_cover,
.l_left,
.l_right,
.float-panel,
.article-banner-wrap,
.page-footer,
.l_main > header {
  display: none !important;
}

.l_body,
.l_body.content {
  display: block;
  width: min(100%, 1120px);
  min-height: calc(100svh - var(--navbar-height) - 98px);
  margin: 0 auto;
  padding: 0;
}

.l_main {
  width: 100%;
  padding: clamp(32px, 4vw, 56px) 24px;
}

.md-text.content {
  width: min(100%, 880px);
  margin: 0 auto;
}

.md-text > :first-child {
  margin-top: 0;
}

.md-text h1,
.md-text h2,
.md-text h3,
.site-brand,
.site-nav a,
.language-switch,
.hero-kicker,
.hero-cta {
  word-break: keep-all;
  overflow-wrap: normal;
}

.md-text h1 {
  color: #f0f6fc;
  font-size: clamp(2rem, 5vw, 3.5rem);
  line-height: 1.15;
  letter-spacing: -0.03em;
}

.md-text h2 {
  margin-top: 3.25rem;
  padding-top: 0.8rem;
  border-top: 1px solid var(--radio-line);
  color: #f0f6fc;
}

.md-text h2::before {
  color: var(--radio-green);
}

.l_body[type='tech'] article.content h2 > a.headerlink:first-child {
  margin-right: 0.45em;
  padding: 0;
  color: var(--radio-green);
  background: transparent !important;
  box-shadow: none;
}

.l_body[type='tech'] article.content h2 > a.headerlink:first-child:hover {
  color: #f0f6fc;
  background: transparent !important;
}

.l_body[type='tech'] article.content h2 > a.headerlink:first-child::before {
  color: inherit;
}

.md-text p,
.md-text li {
  line-height: 1.85;
}

.md-text a:not(.headerlink):not(.hero-cta) {
  padding: 0 0.1em;
  color: var(--radio-green);
  border-radius: 0;
  background-color: transparent;
  background-image: linear-gradient(var(--radio-green), var(--radio-green)) !important;
  background-repeat: no-repeat;
  background-position: left center;
  background-size: 0 100%;
  box-decoration-break: clone;
  transition: background-size 220ms steps(8, end), color 0s;
  -webkit-box-decoration-break: clone;
}

.md-text a:not(.headerlink):not(.hero-cta):hover,
.md-text a:not(.headerlink):not(.hero-cta):focus-visible {
  border-radius: 0;
  color: #fff !important;
  background-color: transparent !important;
  background-image: linear-gradient(var(--radio-green), var(--radio-green)) !important;
  background-repeat: no-repeat !important;
  background-position: left center !important;
  background-size: 100% 100% !important;
}

.md-text a:not(.headerlink):not(.hero-cta):hover code,
.md-text a:not(.headerlink):not(.hero-cta):focus-visible code {
  color: inherit;
}

.md-text code:not(pre code) {
  white-space: nowrap;
}

.md-text pre,
.md-text .table-wrap {
  max-width: 100%;
  overflow-x: auto;
}

.md-text table {
  min-width: 620px;
}

.card,
.cards .item,
button,
.btn,
input,
.tag,
.note,
img {
  border-radius: 0 !important;
}

/* Landing page */
.is-landing .l_body,
.is-landing .md-text.content {
  width: 100%;
  max-width: none;
}

.is-landing .l_main {
  padding: 0;
}

.site-hero {
  position: relative;
  left: 50%;
  isolation: isolate;
  display: flex;
  width: 100vw;
  min-height: calc(100svh - var(--navbar-height) - 1px);
  align-items: center;
  justify-content: center;
  flex-direction: column;
  padding: 72px 24px 96px;
  margin-left: -50vw;
  overflow: hidden;
  text-align: center;
}

.site-hero::before {
  position: absolute;
  z-index: -2;
  inset: 0;
  background:
    radial-gradient(circle at 50% 45%, rgba(63, 185, 80, 0.08), transparent 34%),
    repeating-linear-gradient(0deg, transparent 0 11px, rgba(240, 246, 252, 0.018) 12px);
  content: '';
}

.hero-signal {
  position: absolute;
  z-index: -1;
  top: 50%;
  left: 50%;
  width: min(900px, 86vw);
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--radio-green) 20% 80%, transparent);
  box-shadow: 0 0 28px rgba(63, 185, 80, 0.25);
  opacity: 0.35;
  transform: translate(-50%, -50%);
}

.hero-signal::before {
  position: absolute;
  top: -5px;
  right: 0;
  left: 0;
  height: 11px;
  background: repeating-linear-gradient(90deg, transparent 0 31px, var(--radio-green) 32px 33px);
  content: '';
  opacity: 0.5;
}

.hero-signal::after {
  position: absolute;
  top: -1px;
  left: 0;
  width: 18%;
  height: 3px;
  background: linear-gradient(90deg, transparent, #f0f6fc, var(--radio-green), transparent);
  box-shadow: 0 0 14px var(--radio-green);
  content: '';
  animation: radio-scan 3.6s steps(48, end) infinite;
}

.hero-airwaves {
  position: absolute;
  z-index: -1;
  top: 43%;
  left: 50%;
  width: min(760px, 78vw);
  aspect-ratio: 2.8 / 1;
  pointer-events: none;
  transform: translate(-50%, -50%);
}

.hero-airwaves span {
  position: absolute;
  inset: 0;
  border: 1px solid rgba(63, 185, 80, 0.42);
  border-radius: 50%;
  opacity: 0;
  animation: airwave 3.8s steps(24, end) infinite;
}

.hero-airwaves span:nth-child(2) {
  animation-delay: 1.25s;
}

.hero-airwaves span:nth-child(3) {
  animation-delay: 2.5s;
}

.hero-logo {
  display: block;
  width: min(720px, 84vw);
  height: auto;
  margin: 0;
  filter: drop-shadow(0 0 28px rgba(46, 196, 182, 0.1));
  animation: logo-tune-in 720ms steps(9, end) both;
}

.hero-name {
  max-width: calc(100vw - 40px);
  margin: 30px 0 0;
  color: #f0f6fc;
  font-size: clamp(1.35rem, 4vw, 2.5rem);
  line-height: 1.35;
  word-break: keep-all;
  overflow-wrap: normal;
  animation: receiver-on 480ms 420ms steps(6, end) both;
}

.hero-kicker {
  margin: 34px 0 0;
  color: var(--radio-green);
  font-size: clamp(0.75rem, 2vw, 1rem);
  letter-spacing: 0.24em;
  animation: receiver-on 480ms 560ms steps(6, end) both;
}

.hero-cta {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin-top: 36px;
  border: 1px solid var(--radio-green);
  padding: 14px 20px;
  color: #0d1117;
  background: var(--radio-green);
  box-shadow: 5px 5px 0 #1f6f2e;
  font-size: 1rem;
  line-height: 1;
  transition: transform 120ms ease, box-shadow 120ms ease;
  animation: receiver-on 480ms 680ms steps(6, end) both;
}

.hero-cta:hover {
  color: #0d1117;
  box-shadow: 2px 2px 0 #1f6f2e;
  transform: translate(3px, 3px);
}

@keyframes radio-scan {
  0% { transform: translateX(-110%); }
  100% { transform: translateX(610%); }
}

@keyframes airwave {
  0% { opacity: 0; transform: scale(0.36); }
  18% { opacity: 0.32; }
  72% { opacity: 0.08; }
  100% { opacity: 0; transform: scale(1.12); }
}

@keyframes logo-tune-in {
  0% { opacity: 0; clip-path: inset(49% 0 49% 0); filter: brightness(3) saturate(0); }
  38% { opacity: 1; clip-path: inset(38% 0 38% 0); }
  68% { clip-path: inset(8% 0 8% 0); filter: brightness(1.7) saturate(1.4); }
  100% { opacity: 1; clip-path: inset(0); filter: drop-shadow(0 0 28px rgba(46, 196, 182, 0.1)); }
}

@keyframes receiver-on {
  0% { opacity: 0; transform: translateY(8px); }
  100% { opacity: 1; transform: translateY(0); }
}

.page-transition {
  position: fixed;
  z-index: 3000;
  inset: 0;
  display: grid;
  place-items: center;
  pointer-events: none;
  opacity: 0;
  color: #f0f6fc;
  background:
    repeating-linear-gradient(0deg, transparent 0 9px, rgba(63, 185, 80, 0.045) 10px),
    #0d1117;
}

.page-transition::before {
  position: absolute;
  top: 50%;
  right: 0;
  left: 0;
  height: 2px;
  background: var(--radio-green);
  box-shadow: 0 0 24px var(--radio-green);
  content: '';
}

.tuning-display {
  position: relative;
  z-index: 1;
  display: grid;
  width: min(560px, calc(100vw - 48px));
  justify-items: center;
  gap: 26px;
  padding: 36px 24px;
  text-align: center;
}

.tuning-label {
  color: #f0f6fc;
  font-size: clamp(1.25rem, 4vw, 2rem);
  letter-spacing: 0.14em;
  white-space: nowrap;
}

.tuning-dots {
  display: inline-block;
  width: 3ch;
  overflow: hidden;
  vertical-align: bottom;
  animation: tuning-dots 640ms steps(3, end) infinite;
}

.tuning-wave {
  display: flex;
  width: min(480px, 82vw);
  height: 92px;
  align-items: center;
  justify-content: center;
  gap: clamp(5px, 1.4vw, 12px);
}

.tuning-wave span {
  width: clamp(5px, 1vw, 9px);
  height: 72px;
  background: var(--radio-green);
  box-shadow: 0 0 12px rgba(63, 185, 80, 0.35);
  transform: scaleY(0.18);
  transform-origin: center;
  animation: tuning-wave 460ms steps(4, end) infinite alternate;
}

.tuning-wave span:nth-child(3n + 1) { --wave-peak: 0.42; animation-delay: -80ms; }
.tuning-wave span:nth-child(3n + 2) { --wave-peak: 0.92; animation-delay: -240ms; }
.tuning-wave span:nth-child(3n) { --wave-peak: 0.64; animation-delay: -360ms; }
.tuning-wave span:nth-child(7),
.tuning-wave span:nth-child(9) { --wave-peak: 1.18; }
.tuning-wave span:nth-child(8) { --wave-peak: 0.28; }

.tuning-frequency {
  color: var(--radio-green);
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  white-space: nowrap;
}

body.is-page-leaving {
  overflow: hidden;
}

body.is-page-leaving .page-transition {
  animation: tune-out 660ms steps(16, end) forwards;
}

body.is-page-entering .page-transition {
  animation: tune-in 580ms steps(14, end) both;
}

body.is-page-leaving .tuning-display,
body.is-page-entering .tuning-display {
  animation: tuning-lock 420ms steps(8, end) both;
}

@keyframes tune-out {
  0% { opacity: 0; clip-path: inset(49.8% 0); }
  35% { opacity: 1; clip-path: inset(48.5% 0); }
  100% { opacity: 1; clip-path: inset(0); }
}

@keyframes tune-in {
  0%, 30% { opacity: 1; clip-path: inset(0); }
  82% { opacity: 1; clip-path: inset(48.5% 0); }
  100% { opacity: 0; clip-path: inset(49.8% 0); }
}

@keyframes tuning-wave {
  0% { transform: scaleY(0.18); }
  100% { transform: scaleY(var(--wave-peak, 0.72)); }
}

@keyframes tuning-dots {
  0% { width: 0; }
  100% { width: 3ch; }
}

@keyframes tuning-lock {
  0%, 20% { opacity: 0; transform: translateY(8px); }
  35%, 100% { opacity: 1; transform: translateY(0); }
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.site-footer {
  border-top: 1px solid var(--radio-line);
  color: var(--radio-muted);
  background: #0d1117;
  font-size: 0.75rem;
}

.site-footer__inner {
  display: flex;
  min-height: 96px;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
}

.site-footer__links {
  display: flex;
  gap: 20px;
  white-space: nowrap;
}

.site-footer a {
  color: var(--radio-muted);
}

.site-footer a:hover {
  color: var(--radio-green);
}

#data-toc a.toc-link {
  border-radius: 0 !important;
  transition: color 120ms linear, background-color 120ms steps(4, end), transform 120ms steps(3, end);
}

#data-toc a.toc-link:hover {
  color: #f0f6fc;
  transform: translateX(2px);
}

#data-toc a.toc-link.is-reading,
#data-toc a.toc-link[aria-current='location'] {
  border-radius: 0 !important;
  color: #fff !important;
  background: var(--radio-green) !important;
  transform: none;
}

#data-toc .widget-body,
#data-toc .widget-body .toc {
  max-height: none !important;
  overflow: visible !important;
  scrollbar-width: none;
}

#data-toc .widget-body::before,
#data-toc a.toc-link::before,
#data-toc a.toc-link::after {
  display: none !important;
  content: none !important;
}

#data-toc .widget-body .toc::-webkit-scrollbar {
  display: none;
}

@media screen and (max-width: 760px) {
  :root,
  :root[data-theme='dark'] {
    --navbar-height: 64px;
  }

  .site-navbar__inner {
    display: flex;
    gap: 6px;
    width: calc(100% - 24px);
  }

  .site-brand {
    flex: 0 0 32px;
  }

  .site-brand__name {
    display: none;
  }

  .site-brand img {
    width: 32px;
    height: 32px;
    flex-basis: 32px;
  }

  .site-nav {
    flex: 1 1 auto;
    justify-content: space-evenly;
    gap: 0;
    width: auto;
  }

  .site-nav a {
    flex: 0 1 auto;
    margin: 0;
    padding: 0 2px;
    font-size: 0.75rem;
  }

  .language-switch {
    flex: 0 0 32px;
    width: 32px;
    font-size: 0.75rem;
  }

  .site-nav a[aria-current='page'] {
    text-underline-offset: 6px;
  }

  .l_main {
    padding: 40px 18px 64px;
  }

  .site-hero {
    min-height: calc(100svh - var(--navbar-height));
    padding: 56px 20px 72px;
  }

  .hero-logo {
    width: 88vw !important;
    max-width: 680px !important;
  }

  .hero-copy {
    max-width: 34em;
  }

  .site-footer__inner {
    min-height: 112px;
    align-items: flex-start;
    flex-direction: column;
    justify-content: center;
    gap: 12px;
    width: calc(100% - 36px);
  }
}

@media screen and (min-width: 1101px) {
  .is-content .l_body {
    display: grid;
    grid-template-columns: minmax(0, 880px) 240px;
    gap: 40px;
    width: min(100%, 1180px);
  }

  .is-content .l_main {
    min-width: 0;
  }

  .is-content .l_right {
    display: block !important;
    position: sticky;
    top: calc(var(--navbar-height) + 24px);
    align-self: start;
    width: 240px;
    max-height: none;
    margin-top: clamp(32px, 4vw, 56px);
    overflow: visible !important;
  }

  .is-content .l_right .widgets {
    height: auto;
    overflow: visible !important;
  }
}

@media screen and (max-width: 430px) {
  .site-navbar__inner {
    gap: 4px;
    width: calc(100% - 16px);
  }

  .site-nav a {
    padding: 0 1px;
    font-size: 0.625rem;
  }

  .hero-kicker {
    letter-spacing: 0.16em;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }

  .hero-airwaves,
  .hero-signal::after,
  .page-transition {
    display: none !important;
  }
}