/* Shared stylesheet for blog pages. Mirrors the main landing page palette. */
:root {
  --accent: #2d7a55;
  --accent-soft: #7eb198;
  --accent-on-dark: #3ada87;
  --accent-on-dark-soft: #b6e8c6;
  --ink: #212529;
  --muted: #6c757d;
  --bg: #ffffff;
  --bg-alt: #f5f5f5;
  --bg-dark: #222;
  --border: #e6e6e6;
  --max: 1140px;
  --read: 720px;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.container { max-width: var(--max); margin: 0 auto; padding: 0 1.25rem; }
.read { max-width: var(--read); margin: 0 auto; padding: 0 1.25rem; }

/* Nav (matches landing) */
nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(34,34,34,0.96);
  color: #fff;
  backdrop-filter: blur(6px);
}
nav .container { display: flex; align-items: center; justify-content: space-between; height: 64px; }
nav .brand { font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; color: #fff; }
nav .brand .brand-front { color: var(--accent-on-dark); }
nav .brand .brand-back  { color: var(--accent-on-dark-soft); }
nav .brand .brand-suffix { color: #fff; font-weight: 400; }
nav ul { list-style: none; margin: 0; padding: 0; display: flex; gap: 1.5rem; }
nav ul a { color: #fff; text-transform: uppercase; font-size: 0.82rem; letter-spacing: 0.08em; }
nav ul a:hover { color: var(--accent-on-dark); text-decoration: none; }
nav ul a.active { color: var(--accent-on-dark); }
@media (max-width: 640px) { nav ul { gap: 0.9rem; } nav ul a { font-size: 0.72rem; } }

/* Language switcher (blog-lang.js) - same closed-state look as the main site's
   select in style.css */
nav ul { align-items: center; }
nav ul li.lang-switch { display: flex; align-items: center; gap: 0.3rem; }
nav ul li.lang-switch .lang-switch-icon { font-size: 1rem; line-height: 1.3; }
nav ul li.lang-switch select {
  appearance: none; -webkit-appearance: none; -moz-appearance: none;
  background-color: #1a1a1a;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 10 6'%3E%3Cpath d='M1 1l4 4 4-4' stroke='white' stroke-width='1.5' fill='none' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.5rem center;
  background-size: 9px 6px;
  color: #fff;
  border: 1px solid rgba(255,255,255,0.25);
  border-radius: 4px;
  font: inherit;
  font-size: 0.78rem;
  line-height: 1.3;
  letter-spacing: 0.02em;
  padding: 0.08rem 1.5rem 0.08rem 0.5rem;
  width: 6.5rem;
  cursor: pointer;
}
nav ul li.lang-switch select:hover { background-color: #242424; }
nav ul li.lang-switch select:focus-visible { outline: 2px solid var(--accent-on-dark); outline-offset: 2px; }
nav ul li.lang-switch select option { color: #111; background: #fff; }
@media (max-width: 640px) {
  nav ul { gap: 0.7rem; }
  nav ul li.lang-switch select { width: 4.9rem; font-size: 0.68rem; padding: 0.06rem 1.1rem 0.06rem 0.4rem; background-position: right 0.4rem center; }
  nav ul li.lang-switch .lang-switch-icon { display: none; }
}

/* Post hero */
.post-hero {
  background: linear-gradient(135deg, #1a1a1a 0%, #2c2c2c 100%);
  color: #fff;
  padding: 4.5rem 0 3.25rem;
}
.post-hero h1 {
  font-size: clamp(1.7rem, 3.6vw, 2.6rem); color: var(--accent-on-dark);
  margin: 0 0 0.75rem; letter-spacing: 0.01em;
}
.post-hero .meta {
  color: #c0c0c0; font-size: 0.9rem;
}
.post-hero .meta time { color: #d8d8d8; }
.post-hero .meta .dot { margin: 0 0.5rem; opacity: 0.5; }

/* Article prose */
article {
  padding: 3.5rem 0 4rem;
}
article h2 {
  margin: 2.5rem 0 0.75rem;
  color: var(--accent);
  font-size: 1.4rem;
  letter-spacing: 0.01em;
}
article h3 {
  margin: 1.75rem 0 0.5rem;
  color: var(--accent);
  font-size: 1.1rem;
}
article p { margin: 0 0 1rem; }
article ul, article ol { margin: 0 0 1.25rem; padding-left: 1.4rem; }
article li { margin-bottom: 0.4rem; }
article blockquote {
  margin: 1.25rem 0;
  padding: 0.75rem 1.25rem;
  border-left: 3px solid var(--accent);
  color: var(--muted);
  font-style: italic;
  background: var(--bg-alt);
}
article code {
  background: var(--bg-alt);
  padding: 0.1rem 0.35rem;
  border-radius: 3px;
  font-size: 0.95em;
}
article hr {
  margin: 2.5rem 0;
  border: none;
  border-top: 1px solid var(--border);
}
article .lead {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 2rem;
}

/* Back link */
.back-link {
  display: inline-block;
  margin-top: 2rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-size: 0.85rem;
  font-weight: 700;
}
/* The arrow glyph sits low next to capitals; lift it to their centre */
.back-link .arrow { position: relative; top: -0.16em; }

/* Blog index — post list */
.blog-hero {
  background: linear-gradient(135deg, #1a1a1a 0%, #2c2c2c 100%);
  color: #fff;
  padding: 5rem 0 4rem;
  text-align: center;
}
.blog-hero h1 {
  font-size: clamp(2rem, 5vw, 3rem); color: var(--accent-on-dark);
  margin: 0 0 1rem; text-transform: uppercase; letter-spacing: 0.04em;
}
.blog-hero p {
  max-width: 640px; margin: 0 auto; color: #d0d0d0;
  text-wrap: balance;
}

.post-list {
  padding: 4rem 0;
  background: var(--bg-alt);
}
.post-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.75rem;
  max-width: 1040px;
  margin: 0 auto;
  padding: 0 1.25rem;
}
.post-grid .featured { grid-column: 1 / -1; }
@media (max-width: 720px) {
  .post-grid { grid-template-columns: 1fr; gap: 1.25rem; }
}

.post-card {
  display: flex;
  flex-direction: column;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1.75rem;
  color: var(--ink);
  transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease;
  text-decoration: none;
}
.post-card:hover {
  text-decoration: none;
  transform: translateY(-3px);
  box-shadow: 0 12px 28px rgba(0,0,0,0.08);
  border-color: #d6d6d6;
}
.post-card:hover h2 { color: var(--accent); }
.post-card .meta-row {
  display: flex; align-items: center; gap: 0.75rem;
  margin-bottom: 0.9rem; flex-wrap: wrap;
}
.post-card .tag {
  font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.1em;
  color: var(--accent); border: 1px solid var(--accent);
  padding: 0.15rem 0.55rem; border-radius: 999px; font-weight: 700;
}
.post-card .date {
  font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.1em;
  color: var(--muted);
}
.post-card h2 {
  margin: 0 0 0.6rem;
  font-size: 1.2rem;
  letter-spacing: 0.005em;
  transition: color 0.15s ease;
}
.post-card p {
  margin: 0 0 1rem;
  color: var(--muted);
  flex: 1;
}
.post-card .read-more {
  font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.08em;
  color: var(--accent); font-weight: 700;
}

.post-card.featured {
  background: linear-gradient(135deg, #fff 0%, #fafafa 100%);
  padding: 2.5rem 2.5rem;
}
.post-card.featured h2 { font-size: 1.7rem; margin-bottom: 0.8rem; }
.post-card.featured p { font-size: 1.05rem; line-height: 1.6; }
@media (max-width: 720px) {
  .post-card.featured { padding: 1.75rem; }
  .post-card.featured h2 { font-size: 1.35rem; }
  .post-card.featured p { font-size: 1rem; }
}

/* Footer (matches landing) */
footer {
  background: var(--bg-dark); color: #c8c8c8;
  padding: 2rem 0; text-align: center; font-size: 0.88rem;
}
footer a { color: #fff; }
/* Plain links to the page's other languages (prerender_i18n.py) - crawlable,
   and a language switch that works without JavaScript */
footer .lang-links { margin: 0 0 0.75rem; font-size: 0.8rem; text-wrap: balance; }
footer .lang-links a, footer .lang-links span { margin: 0 0.3rem; }
footer .lang-links [aria-current] { color: var(--accent-on-dark); }
@media (max-width: 640px) { footer .lang-links a, footer .lang-links span { margin: 0 0.1rem; } }
footer .small {
  margin-top: 0.6rem; font-size: 0.78rem; opacity: 0.75;
}

/* Top Android-freedom banner — left/right combo of Keep-Android-Open + FSFE Free-Your-Android */
.android-banner { background: #f0f0f0; padding: 1.75rem 0; border-bottom: 1px solid var(--border); }
.android-banner > .container { max-width: calc(var(--max) * 1.10); }
/* Temporarily hidden — re-enable by deleting the following rule */
.android-banner { display: none; }
.android-banner-inner {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 7rem; align-items: stretch;
}
.android-banner .ab-side { min-width: 0; }
.android-banner .ab-kao,
.android-banner .ab-fsfe {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1rem 1.25rem;
}
.android-banner .ab-kao {
  display: flex; flex-direction: column; justify-content: center;
}
.android-banner .ab-kao #kao-slot { /* KAO JS injects its own styled banner here */ }
.android-banner .ab-fsfe {
  display: flex; align-items: center; gap: 1.25rem;
}
.android-banner .ab-fsfe img { width: 88px; height: auto; flex-shrink: 0; }
.android-banner .ab-fsfe .text { text-align: left; }
.android-banner .ab-fsfe h3 {
  margin: 0 0 0.3rem; font-size: 1rem;
  text-transform: uppercase; letter-spacing: 0.06em;
}
.android-banner .ab-fsfe p { margin: 0 0 0.4rem; color: var(--muted); font-size: 0.88rem; line-height: 1.45; }
.android-banner .ab-fsfe a.cta { color: var(--accent); font-weight: 700; text-transform: uppercase; letter-spacing: 0.06em; font-size: 0.8rem; }
@media (max-width: 780px) {
  .android-banner-inner { grid-template-columns: 1fr; gap: 1.25rem; }
}
@media (max-width: 520px) {
  .android-banner .ab-fsfe { flex-direction: column; gap: 0.75rem; text-align: center; }
  .android-banner .ab-fsfe .text { text-align: center; }
}

/* Environment-banner pill — the inline script sets data-env + the
   env-show-badge class on <html> if we're on a local host. The label
   text is supplied by CSS so it works regardless of when the badge
   span is parsed. Public hosts: no badge. */
nav .brand .env-badge { display: none; }
html.env-show-badge nav .brand .env-badge {
  display: inline-block;
  font-size: 0.62rem;
  text-transform: uppercase; letter-spacing: 0.12em;
  padding: 0.18rem 0.55rem;
  border-radius: 999px;
  margin-left: 0.6rem;
  font-weight: 700;
  vertical-align: 0.18em;
  color: #1a1a1a;
}
html.env-show-badge[data-env="dev"]  nav .brand .env-badge { background: #ff9d4d; }
html.env-show-badge[data-env="prod"] nav .brand .env-badge { background: #5fa8ff; }
html.env-show-badge[data-env="dev"]  nav .brand .env-badge::before { content: "local-dev"; }
html.env-show-badge[data-env="prod"] nav .brand .env-badge::before { content: "local-prod"; }