/* hollowlullaby engine site — shared styles.
   Dark aurora theme to match the engine's animated background shader. */
:root {
  --bg: #0b1016;
  --bg-soft: #111a24;
  --card: #16222f;
  --card-edge: #24374a;
  --ink: #e8f0f8;
  --ink-dim: #9db2c7;
  --accent: #4fd8e0;
  --accent-deep: #2ba7c9;
  --good: #7ee08a;
  --maxw: 980px;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.75 -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
        "Hiragino Sans GB", "Noto Sans CJK SC", "Microsoft YaHei", sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* top nav */
.nav {
  position: sticky; top: 0; z-index: 10;
  background: rgba(11, 16, 22, 0.85); backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--card-edge);
}
.nav-inner {
  max-width: var(--maxw); margin: 0 auto; padding: 0.65rem 1.25rem;
  display: flex; align-items: center; gap: 1.1rem; flex-wrap: wrap;
}
.nav .brand { font-weight: 800; letter-spacing: 0.02em; color: var(--ink); }
.nav .brand:hover { text-decoration: none; color: var(--accent); }
.nav a.item { color: var(--ink-dim); font-size: 0.95rem; }
.nav a.item:hover { color: var(--accent); text-decoration: none; }
.nav .spacer { flex: 1; }
.nav a.play {
  background: var(--accent); color: #06222a; font-weight: 700;
  padding: 0.25rem 0.9rem; border-radius: 999px; font-size: 0.95rem;
}
.nav a.play:hover { background: #7ce6ec; text-decoration: none; }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 1.5rem 1.25rem 4rem; }

/* hero */
.hero {
  position: relative; overflow: hidden;
  border-bottom: 1px solid var(--card-edge);
  background:
    radial-gradient(1200px 500px at 70% -10%, rgba(43, 167, 201, 0.28), transparent 60%),
    radial-gradient(900px 420px at 10% 10%, rgba(94, 84, 191, 0.22), transparent 60%),
    var(--bg-soft);
}
.hero-inner {
  max-width: var(--maxw); margin: 0 auto; padding: 4rem 1.25rem 3.2rem;
  display: grid; grid-template-columns: 1.2fr 1fr; gap: 2rem; align-items: center;
}
.hero h1 { font-size: 2.3rem; line-height: 1.25; margin: 0 0 0.4rem; }
.hero h1 .en { color: var(--accent); }
.hero .tagline { color: var(--ink-dim); font-size: 1.08rem; margin: 0.6rem 0 1.6rem; }
.hero .cta { display: flex; gap: 0.8rem; flex-wrap: wrap; }
.btn {
  display: inline-block; padding: 0.6rem 1.4rem; border-radius: 10px;
  font-weight: 700; border: 1px solid var(--card-edge); color: var(--ink);
}
.btn:hover { text-decoration: none; border-color: var(--accent); color: var(--accent); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #06222a; }
.btn.primary:hover { background: #7ce6ec; color: #06222a; }
.hero img.keyart {
  width: 100%; border-radius: 14px; border: 1px solid var(--card-edge);
  box-shadow: 0 18px 48px rgba(0, 0, 0, 0.45); display: block;
}
@media (max-width: 760px) {
  .hero-inner { grid-template-columns: 1fr; padding-top: 2.5rem; }
  .hero h1 { font-size: 1.7rem; }
}

/* sections */
section.block { margin-top: 3.2rem; }
section.block > h2 {
  font-size: 1.45rem; margin: 0 0 0.35rem;
  padding-left: 0.75rem; border-left: 4px solid var(--accent);
}
section.block > p.lead { color: var(--ink-dim); margin: 0 0 1.3rem; }

.grid { display: grid; gap: 0.9rem; }
.grid.cols3 { grid-template-columns: repeat(3, 1fr); }
.grid.cols2 { grid-template-columns: repeat(2, 1fr); }
@media (max-width: 760px) { .grid.cols3, .grid.cols2 { grid-template-columns: 1fr; } }

.card {
  background: var(--card); border: 1px solid var(--card-edge);
  border-radius: 12px; padding: 1rem 1.1rem; display: block; color: var(--ink);
}
a.card:hover { border-color: var(--accent); text-decoration: none; transform: translateY(-2px); transition: 0.12s; }
.card h3 { margin: 0 0 0.3rem; font-size: 1.05rem; }
.card p { margin: 0; color: var(--ink-dim); font-size: 0.92rem; line-height: 1.6; }
.card .tag { color: var(--accent); font-size: 0.8rem; font-weight: 700; letter-spacing: 0.06em; }

/* game chips */
.games { display: flex; flex-wrap: wrap; gap: 0.55rem; }
.chip {
  background: var(--card); border: 1px solid var(--card-edge); border-radius: 999px;
  padding: 0.3rem 0.95rem; font-size: 0.92rem; color: var(--ink);
}
.chip:hover { border-color: var(--accent); color: var(--accent); text-decoration: none; }
.chip .zh { color: var(--ink-dim); font-size: 0.85em; margin-left: 0.3em; }
.chip:hover .zh { color: var(--accent); }

/* article (blog post / docs page) */
article.md { max-width: 760px; margin: 0 auto; }
article.md h1 { font-size: 1.9rem; line-height: 1.35; }
article.md h2 { margin-top: 2.2rem; padding-bottom: 0.3rem; border-bottom: 1px solid var(--card-edge); }
article.md img { max-width: 100%; border-radius: 10px; border: 1px solid var(--card-edge); }
article.md blockquote {
  margin: 1rem 0; padding: 0.1rem 1rem; color: var(--ink-dim);
  border-left: 4px solid var(--accent-deep); background: var(--bg-soft); border-radius: 0 8px 8px 0;
}
article.md code {
  background: var(--bg-soft); border: 1px solid var(--card-edge);
  border-radius: 5px; padding: 0.1em 0.4em; font-size: 0.9em;
}
article.md pre {
  background: #0d141c; border: 1px solid var(--card-edge); border-radius: 10px;
  padding: 1rem; overflow-x: auto; line-height: 1.55;
}
article.md pre code { background: none; border: none; padding: 0; }
article.md table { border-collapse: collapse; width: 100%; display: block; overflow-x: auto; }
article.md th, article.md td { border: 1px solid var(--card-edge); padding: 0.45rem 0.7rem; text-align: left; }
article.md th { background: var(--bg-soft); }
article.md em { color: var(--ink-dim); }

/* post list */
.post-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 0.9rem; }
.post-list .date { color: var(--ink-dim); font-size: 0.85rem; }
.loading { color: var(--ink-dim); text-align: center; padding: 3rem 0; }

footer.site {
  margin-top: 4rem; border-top: 1px solid var(--card-edge);
  color: var(--ink-dim); font-size: 0.9rem;
}
footer.site .inner { max-width: var(--maxw); margin: 0 auto; padding: 1.5rem 1.25rem; }