/* NexusDialer blog: "Polar Night", the same tokens as the landing page
   (frontend/src/styles/nexus-public.css). Server-rendered, no JavaScript.
   Content is visible by default; nothing here hides it behind an animation. */

:root {
  --bl-canvas: #030a12;
  --bl-glass: rgba(255, 255, 255, 0.055);
  --bl-glass-strong: rgba(255, 255, 255, 0.08);
  --bl-line: rgba(255, 255, 255, 0.09);
  --bl-line-strong: rgba(255, 255, 255, 0.16);
  --bl-ink: #eef6fb;
  --bl-ink-body: #c4d0d9;
  --bl-ink-2: #a7b6c2;
  --bl-ink-3: #8597a4;
  /* The landing page's one accent. Change it here to retheme every control. */
  --bl-accent: #5ee7ff;
  --bl-accent-hover: #93f0ff;
  --bl-accent-ink: #03202a;
  --bl-aurora-teal: rgba(15, 118, 110, 0.34);
  --bl-aurora-aqua: rgba(8, 145, 178, 0.26);
  --bl-font:
    "Geist", "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI",
    Roboto, Arial, sans-serif;
  --bl-mono:
    "Geist Mono", ui-monospace, "SF Mono", "Cascadia Mono", Menlo, Consolas,
    monospace;
  --bl-serif:
    "Instrument Serif", "Iowan Old Style", "Palatino Linotype", Georgia, serif;
  --bl-wrap: 1180px;
  --bl-gutter: 24px;
  color-scheme: dark;
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  * {
    transition-duration: 0.01ms !important;
  }
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-color: var(--bl-canvas);
  background-image:
    radial-gradient(
      60% 50% at 18% -8%,
      var(--bl-aurora-teal),
      transparent 70%
    ),
    radial-gradient(
      55% 45% at 92% 0%,
      var(--bl-aurora-aqua),
      transparent 70%
    );
  background-repeat: no-repeat;
  color: var(--bl-ink);
  font-family: var(--bl-font);
  font-size: 16px;
  line-height: 1.6;
  font-feature-settings: "ss01", "cv11";
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
}

img {
  max-width: 100%;
  height: auto;
}

:is(a, summary, button):focus-visible {
  outline: 2px solid var(--bl-accent);
  outline-offset: 3px;
  border-radius: 8px;
}

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

.bl-skip {
  position: absolute;
  left: 16px;
  top: -100px;
  z-index: 100;
  padding: 10px 14px;
  border-radius: 8px;
  background: var(--bl-accent);
  color: var(--bl-accent-ink);
  font-weight: 600;
  text-decoration: none;
}
.bl-skip:focus {
  top: 12px;
}

/* ---------- Header ---------- */
.bl-header {
  position: sticky;
  top: 0;
  z-index: 40;
  border-bottom: 1px solid var(--bl-line);
  background: color-mix(in srgb, var(--bl-canvas) 78%, transparent);
  -webkit-backdrop-filter: blur(20px) saturate(140%);
  backdrop-filter: blur(20px) saturate(140%);
}
.bl-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  height: 68px;
}
.bl-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--bl-ink);
  text-decoration: none;
  white-space: nowrap;
}
.bl-mark {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
}
.bl-brand__word {
  display: flex;
  align-items: baseline;
  gap: 6px;
  font-size: 20px;
  font-weight: 600;
  letter-spacing: -0.04em;
  line-height: 1;
}
.bl-brand__descriptor {
  font-family: var(--bl-mono);
  font-size: 9px;
  font-weight: 500;
  letter-spacing: 0.14em;
  color: var(--bl-ink-3);
}
.bl-links {
  display: none;
  align-items: center;
  gap: 4px;
}
.bl-links a {
  padding: 8px 12px;
  border-radius: 8px;
  color: var(--bl-ink-2);
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  transition:
    color 140ms ease,
    background-color 140ms ease;
}
.bl-links a:hover {
  color: var(--bl-ink);
  background: var(--bl-glass);
}
.bl-links a[aria-current="page"] {
  color: var(--bl-ink);
  background: var(--bl-glass-strong);
}
.bl-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}
.bl-signin {
  display: none;
  padding: 8px 12px;
  color: var(--bl-ink-2);
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
}
.bl-signin:hover {
  color: var(--bl-ink);
}

/* Buttons */
.bl-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 48px;
  padding: 0 20px;
  border: 1px solid var(--bl-line-strong);
  border-radius: 10px;
  background: var(--bl-glass);
  color: var(--bl-ink);
  font-size: 15px;
  font-weight: 500;
  line-height: 1;
  text-decoration: none;
  white-space: nowrap;
  transition:
    background-color 140ms ease,
    border-color 140ms ease,
    transform 140ms ease;
}
.bl-button:hover {
  background: var(--bl-glass-strong);
}
.bl-button:active {
  transform: translateY(1px);
}
.bl-button--primary {
  border-color: transparent;
  background: var(--bl-accent);
  color: var(--bl-accent-ink);
  font-weight: 600;
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.18) inset,
    0 8px 28px -10px rgba(94, 231, 255, 0.55);
}
.bl-button--primary:hover {
  background: var(--bl-accent-hover);
}
.bl-button--small {
  min-height: 40px;
  padding: 0 14px;
  font-size: 14px;
}

/* Mobile menu: <details>, no script. */
.bl-menu {
  position: relative;
}
.bl-menu summary {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border: 1px solid var(--bl-line-strong);
  border-radius: 10px;
  background: var(--bl-glass);
  cursor: pointer;
  list-style: none;
}
.bl-menu summary::-webkit-details-marker {
  display: none;
}
.bl-menu__bars,
.bl-menu__bars::before,
.bl-menu__bars::after {
  display: block;
  width: 16px;
  height: 2px;
  border-radius: 2px;
  background: var(--bl-ink);
}
.bl-menu__bars {
  position: relative;
}
.bl-menu__bars::before,
.bl-menu__bars::after {
  content: "";
  position: absolute;
  left: 0;
}
.bl-menu__bars::before {
  top: -5px;
}
.bl-menu__bars::after {
  top: 5px;
}
.bl-menu__panel {
  position: absolute;
  right: 0;
  top: 52px;
  display: grid;
  gap: 2px;
  width: min(86vw, 300px);
  padding: 10px;
  border: 1px solid var(--bl-line-strong);
  border-radius: 14px;
  background: #0a1620;
  box-shadow: 0 24px 64px -24px rgba(0, 0, 0, 0.8);
}
.bl-menu__panel a {
  padding: 12px;
  border-radius: 8px;
  color: var(--bl-ink-body);
  text-decoration: none;
}
.bl-menu__panel a:hover {
  background: var(--bl-glass);
  color: var(--bl-ink);
}
.bl-menu__panel .bl-button {
  margin-top: 8px;
  color: var(--bl-accent-ink);
}

@media (min-width: 960px) {
  .bl-links,
  .bl-signin {
    display: flex;
  }
  .bl-menu {
    display: none;
  }
}
@media (max-width: 959px) {
  .bl-nav-signup {
    display: none;
  }
}

/* ---------- Main ---------- */
.bl-main {
  flex: 1;
  padding-bottom: 96px;
}
.bl-main:focus {
  outline: none;
}

.bl-eyebrow {
  margin: 0 0 20px;
  color: var(--bl-ink-3);
  font: 500 12px/1.4 var(--bl-mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

/* Hero */
.bl-hero {
  padding: 72px 0 40px;
}
.bl-hero h1 {
  margin: 0 0 16px;
  max-width: 18ch;
  font-size: clamp(36px, 6vw, 60px);
  font-weight: 600;
  line-height: 1.04;
  letter-spacing: -0.035em;
  text-wrap: balance;
}
.bl-hero p {
  margin: 0;
  max-width: 58ch;
  color: var(--bl-ink-body);
  font-size: 18px;
}

/* ---------- Card grid ---------- */
.bl-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 400px), 1fr));
  gap: 24px;
  margin: 0;
  padding: 0;
  list-style: none;
}
/* A lone card stays half width on desktop instead of stretching across. */
.bl-grid > li {
  min-width: 0;
}
.bl-card {
  display: flex;
  flex-direction: column;
  height: 100%;
  overflow: hidden;
  border: 1px solid var(--bl-line);
  border-radius: 16px;
  background: var(--bl-glass);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08);
  transition:
    border-color 160ms ease,
    background-color 160ms ease,
    transform 160ms ease;
}
.bl-card:hover {
  border-color: var(--bl-line-strong);
  background: var(--bl-glass-strong);
  transform: translateY(-2px);
}
.bl-card__cover {
  display: block;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: #0a1620;
  text-decoration: none;
}
.bl-card__cover img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.bl-card__body {
  display: flex;
  flex: 1;
  flex-direction: column;
  gap: 10px;
  padding: 20px 22px 22px;
}
.bl-tag {
  align-self: flex-start;
  padding: 3px 10px;
  border: 1px solid color-mix(in srgb, var(--bl-accent) 35%, transparent);
  border-radius: 999px;
  background: color-mix(in srgb, var(--bl-accent) 10%, transparent);
  color: var(--bl-accent);
  font: 500 11px/1.5 var(--bl-mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.bl-card__title {
  margin: 0;
  font-size: 21px;
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: -0.02em;
  text-wrap: balance;
}
.bl-card__title a {
  text-decoration: none;
}
.bl-card__title a:hover {
  text-decoration: underline;
  text-underline-offset: 4px;
}
.bl-card__excerpt {
  display: -webkit-box;
  margin: 0;
  overflow: hidden;
  color: var(--bl-ink-body);
  font-size: 15px;
  line-height: 1.55;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 3;
  line-clamp: 3;
}
.bl-meta {
  margin-top: auto;
  padding-top: 6px;
  color: var(--bl-ink-3);
  font: 400 12px/1.5 var(--bl-mono);
  letter-spacing: 0.02em;
}

/* Generated cover for a post without a featured image: the aurora, the mark
   and the category. Decorative, so it is hidden from assistive tech. */
.bl-gen {
  position: relative;
  display: grid;
  place-items: center;
  width: 100%;
  height: 100%;
  overflow: hidden;
  background:
    radial-gradient(80% 90% at 20% 10%, var(--gen-a), transparent 65%),
    radial-gradient(70% 80% at 85% 95%, var(--gen-b), transparent 65%), #06121c;
}
.bl-gen--0 {
  --gen-a: rgba(15, 118, 110, 0.55);
  --gen-b: rgba(8, 145, 178, 0.4);
}
.bl-gen--1 {
  --gen-a: rgba(8, 145, 178, 0.55);
  --gen-b: rgba(67, 97, 200, 0.4);
}
.bl-gen--2 {
  --gen-a: rgba(61, 245, 176, 0.3);
  --gen-b: rgba(15, 118, 110, 0.5);
}
.bl-gen--3 {
  --gen-a: rgba(94, 231, 255, 0.3);
  --gen-b: rgba(15, 118, 110, 0.5);
}
.bl-gen::before {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    135deg,
    rgba(255, 255, 255, 0.035) 0 1px,
    transparent 1px 14px
  );
}
.bl-gen__mark {
  position: absolute;
  right: -6%;
  bottom: -18%;
  width: 56%;
  opacity: 0.1;
}
.bl-gen__label {
  position: relative;
  padding: 6px 14px;
  border: 1px solid var(--bl-line-strong);
  border-radius: 999px;
  background: rgba(3, 10, 18, 0.55);
  color: var(--bl-ink);
  font: 500 12px/1.4 var(--bl-mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

/* ---------- Empty and 404 ---------- */
.bl-empty {
  max-width: 560px;
  padding: 40px 32px;
  border: 1px solid var(--bl-line);
  border-radius: 16px;
  background: var(--bl-glass);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08);
}
.bl-empty h2 {
  margin: 0 0 10px;
  font-size: 24px;
  font-weight: 600;
  letter-spacing: -0.02em;
}
.bl-empty p {
  margin: 0 0 24px;
  color: var(--bl-ink-body);
}
.bl-lost {
  padding: 96px 0 24px;
}
.bl-lost h1 {
  margin: 0 0 14px;
  font-size: clamp(32px, 5vw, 48px);
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.1;
}
.bl-lost p {
  max-width: 52ch;
  margin: 0 0 28px;
  color: var(--bl-ink-body);
  font-size: 18px;
}
.bl-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- Article ---------- */
.bl-article {
  padding-top: 40px;
}
.bl-back {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 28px;
  color: var(--bl-ink-2);
  font-size: 14px;
  text-decoration: none;
}
.bl-back:hover {
  color: var(--bl-ink);
}
.bl-article__head {
  max-width: 780px;
  margin-inline: auto;
}
.bl-article__head h1 {
  margin: 14px 0 16px;
  font-size: clamp(32px, 5.2vw, 52px);
  font-weight: 600;
  line-height: 1.08;
  letter-spacing: -0.035em;
  text-wrap: balance;
}
.bl-article__lede {
  margin: 0 0 14px;
  color: var(--bl-ink-body);
  font-size: 19px;
  line-height: 1.55;
}
.bl-figure {
  max-width: 980px;
  margin: 36px auto 8px;
}
.bl-figure img,
.bl-figure .bl-gen {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border: 1px solid var(--bl-line);
  border-radius: 16px;
}

/* Prose */
.bl-prose {
  max-width: 720px;
  margin: 40px auto 0;
  color: var(--bl-ink-body);
  font-size: 18px;
  line-height: 1.75;
  overflow-wrap: break-word;
}
.bl-prose > :first-child {
  margin-top: 0;
}
.bl-prose p,
.bl-prose ul,
.bl-prose ol,
.bl-prose blockquote,
.bl-prose pre,
.bl-prose figure,
.bl-prose table {
  margin: 0 0 1.4em;
}
.bl-prose h2,
.bl-prose h3,
.bl-prose h4 {
  color: var(--bl-ink);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.025em;
  text-wrap: balance;
}
.bl-prose h2 {
  margin: 2.1em 0 0.6em;
  font-size: 30px;
}
.bl-prose h3 {
  margin: 1.8em 0 0.5em;
  font-size: 23px;
}
.bl-prose h4 {
  margin: 1.6em 0 0.5em;
  font-size: 19px;
}
.bl-prose strong,
.bl-prose b {
  color: var(--bl-ink);
  font-weight: 600;
}
.bl-prose a {
  color: var(--bl-accent);
  text-decoration: underline;
  text-decoration-color: color-mix(in srgb, var(--bl-accent) 45%, transparent);
  text-underline-offset: 3px;
}
.bl-prose a:hover {
  color: var(--bl-accent-hover);
  text-decoration-color: currentColor;
}
.bl-prose ul,
.bl-prose ol {
  padding-left: 1.4em;
}
.bl-prose li {
  margin: 0.4em 0;
}
.bl-prose li::marker {
  color: var(--bl-ink-3);
}
.bl-prose blockquote {
  padding: 4px 0 4px 20px;
  border-left: 3px solid color-mix(in srgb, var(--bl-accent) 60%, transparent);
  color: var(--bl-ink);
  font-family: var(--bl-serif);
  font-size: 22px;
  font-style: italic;
  line-height: 1.5;
}
.bl-prose blockquote p:last-child {
  margin-bottom: 0;
}
.bl-prose hr {
  margin: 2.4em 0;
  border: 0;
  border-top: 1px solid var(--bl-line);
}
.bl-prose img {
  display: block;
  margin: 2em auto;
  border: 1px solid var(--bl-line);
  border-radius: 12px;
}
.bl-prose figcaption {
  margin-top: 8px;
  color: var(--bl-ink-3);
  font-size: 14px;
  text-align: center;
}
.bl-prose code {
  padding: 2px 6px;
  border: 1px solid var(--bl-line);
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.05);
  color: var(--bl-ink);
  font-family: var(--bl-mono);
  font-size: 0.86em;
}
.bl-prose pre {
  overflow-x: auto;
  padding: 16px 18px;
  border: 1px solid var(--bl-line);
  border-radius: 12px;
  background: rgba(2, 8, 14, 0.6);
  font-size: 15px;
  line-height: 1.6;
}
.bl-prose pre code {
  padding: 0;
  border: 0;
  background: none;
}
.bl-prose table {
  display: block;
  width: 100%;
  overflow-x: auto;
  border-collapse: collapse;
  font-size: 16px;
}
.bl-prose th,
.bl-prose td {
  padding: 10px 14px;
  border: 1px solid var(--bl-line);
  text-align: left;
  vertical-align: top;
}
.bl-prose th {
  background: var(--bl-glass);
  color: var(--bl-ink);
  font-weight: 600;
}

/* CTA */
.bl-cta {
  max-width: 720px;
  margin: 56px auto 0;
  padding: 32px;
  border: 1px solid var(--bl-line-strong);
  border-radius: 16px;
  background:
    radial-gradient(70% 120% at 0% 0%, rgba(8, 145, 178, 0.22), transparent 70%),
    var(--bl-glass-strong);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08);
}
.bl-cta h2 {
  margin: 0 0 8px;
  font-size: 26px;
  font-weight: 600;
  letter-spacing: -0.025em;
  line-height: 1.2;
}
.bl-cta p {
  margin: 0 0 22px;
  color: var(--bl-ink-body);
}

/* Related */
.bl-related {
  margin-top: 80px;
}
.bl-related h2 {
  margin: 0 0 24px;
  font-size: 24px;
  font-weight: 600;
  letter-spacing: -0.025em;
}
.bl-related__foot {
  margin-top: 28px;
}

/* ---------- Footer ---------- */
.bl-footer {
  border-top: 1px solid var(--bl-line);
  background: rgba(2, 8, 14, 0.5);
  padding: 48px 0 32px;
}
.bl-footer__main {
  display: grid;
  gap: 36px;
  grid-template-columns: 1fr;
}
.bl-footer__brand p {
  margin: 14px 0 0;
  color: var(--bl-ink-2);
  font-size: 14px;
}
.bl-footer nav {
  display: grid;
  align-content: start;
  gap: 10px;
}
.bl-footer nav span {
  color: var(--bl-ink-3);
  font: 500 11px/1.4 var(--bl-mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.bl-footer nav a {
  color: var(--bl-ink-body);
  font-size: 14px;
  text-decoration: none;
}
.bl-footer nav a:hover {
  color: var(--bl-ink);
  text-decoration: underline;
  text-underline-offset: 4px;
}
.bl-footer__bottom {
  margin-top: 40px;
  padding-top: 20px;
  border-top: 1px solid var(--bl-line);
  color: var(--bl-ink-3);
  font-size: 13px;
}
@media (min-width: 760px) {
  .bl-footer__main {
    grid-template-columns: 1.4fr 1fr 1fr;
  }
}

@media (max-width: 600px) {
  :root {
    --bl-gutter: 16px;
  }
  .bl-hero {
    padding: 48px 0 28px;
  }
  .bl-prose {
    font-size: 17px;
  }
  .bl-cta {
    padding: 24px 20px;
  }
}