/* Theme */
:root{
  /* 5-color palette */
  --bg:#0b0f14;
  --surface:#101823;
  --text:#e6f1ff;
  --primary:#00e5ff;
  --accent:#a8ff60;

  --radius: 14px;
  --shadow-primary: 0 0 0 1px rgba(0,229,255,0.35), 0 0 24px rgba(0,229,255,0.15);
  --shadow-accent: 0 0 0 1px rgba(168,255,96,0.35), 0 0 24px rgba(168,255,96,0.18);
}

/* Base */
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", "Apple Color Emoji","Segoe UI Emoji";
  color:var(--text);
  background:var(--bg);
  line-height:1.6;
}
img{max-width:100%;display:block}
a{color:var(--primary);text-decoration:none}
a:hover{opacity:.9}
.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}
.skip-link{
  position:absolute;left:-9999px;top:auto;background:var(--surface);color:var(--text);padding:.75rem 1rem;border-radius:8px;box-shadow:var(--shadow-primary);
}
.skip-link:focus{left:1rem;top:1rem;z-index:1000}

/* Container & layout */
.container{max-width:1200px;margin-inline:auto;padding:0 1rem}
.layout{
  display:flex;flex-direction:column;gap:1.5rem;padding:2rem 0;
}
@media (min-width: 1024px){
  .layout{flex-direction:row;align-items:flex-start;gap:2rem}
}

/* Header */
.site-header{
  position:sticky;top:0;z-index:10;
  background: linear-gradient(to bottom, rgba(16,24,35,0.9), rgba(16,24,35,0.6));
  backdrop-filter: blur(8px);
  border-bottom:1px solid rgba(0,229,255,0.2);
  box-shadow: 0 10px 30px rgba(0,0,0,0.2);
}
.nav{
  display:flex;align-items:center;justify-content:space-between;height:64px;
}
.brand{
  font-weight:700;letter-spacing:.5px;
  color:var(--text);
  text-shadow: 0 0 12px rgba(0,229,255,0.25);
}
.menu{list-style:none;display:none;gap:1rem;margin:0;padding:0}
.menu a{color:var(--text);opacity:.9}
.menu a[aria-current="page"]{color:var(--primary)}
@media (min-width: 768px){
  .menu{display:flex}
}

/* Buttons & inputs */
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  padding:.6rem .9rem;border-radius:10px;font-weight:600;letter-spacing:.3px;
  transition: transform .15s ease, box-shadow .2s ease, background .2s ease;
  border:1px solid transparent;
}
.btn:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
.btn-primary{
  background:transparent;border-color:rgba(0,229,255,0.6);color:var(--text);
  box-shadow: var(--shadow-primary);
}
.btn-primary:hover{transform:translateY(-1px)}
.btn-accent{
  background:rgba(168,255,96,0.08);border-color:rgba(168,255,96,0.6);color:var(--accent);
  box-shadow: var(--shadow-accent);
}
.btn-accent:hover{transform:translateY(-1px)}
input,textarea{
  width:100%;padding:.7rem .9rem;border-radius:10px;border:1px solid rgba(0,229,255,0.25);
  background:rgba(16,24,35,0.7);color:var(--text);
  outline:none;box-shadow: var(--shadow-primary);
}
input::placeholder,textarea::placeholder{color:rgba(230,241,255,0.5)}
input:focus,textarea:focus{border-color:var(--primary)}

/* Sidebar */
.aside{
  order:2;
  display:flex;flex-direction:column;gap:1rem;
}
@media (min-width:1024px){
  .aside{order:1;position:sticky;top:88px;width:320px;flex:0 0 320px}
}
.widget{
  background:var(--surface);
  border:1px solid rgba(0,229,255,0.25);
  border-radius:var(--radius);
  padding:1rem;
  box-shadow: var(--shadow-primary);
}
.widget-title{
  margin:0 0 .8rem 0;font-size:1rem;letter-spacing:.4px;color:var(--text);
  opacity:.9
}
.cover {
  position: relative;
  height: 220px;
  background: rgba(0, 255, 150, 0.05);
  border: 1px solid rgba(0, 255, 150, 0.2);
  overflow: hidden;
  border-radius: 12px;
}
.cover img{
    width: 820px;
    height: 240px;
}

.search{display:flex;gap:.6rem}
.list{list-style:none;margin:0;padding:0;display:grid;gap:.4rem}
.list a{color:var(--text);opacity:.85}
.tags{list-style:none;display:flex;flex-wrap:wrap;gap:.5rem;margin:0;padding:0}
.tags a{
  display:inline-block;padding:.35rem .6rem;border-radius:999px;border:1px solid rgba(0,229,255,0.35);
  color:var(--primary);background:rgba(16,24,35,0.6);
}
.recent-posts{list-style:none;margin:0;padding:0;display:grid;gap:.6rem}
.recent-item a{display:flex;gap:.6rem;align-items:center;color:var(--text)}
.recent-title{display:block}
.recent-date{display:block;font-size:.85rem;opacity:.6}
.dot{
  width:10px;height:10px;border-radius:50%;
  background:var(--primary);box-shadow: 0 0 10px rgba(0,229,255,0.9);
}
#search-results {
  margin-top: 20px;
}

.search-item {
  padding: 10px 0;
  border-bottom: 1px solid #ddd;
}

.search-item h3 {
  margin: 0;
  font-size: 18px;
}

.search-item a {
  color: #0077ff;
  text-decoration: none;
}

.search-item a:hover {
  text-decoration: underline;
}


/* Article */
.article{
  order:1;flex:1 1 auto;min-width:0;
}
@media (min-width:1024px){
  .article{order:2}
}
.post-hero{
  background:var(--surface);
  border:1px solid rgba(0,229,255,0.25);
  border-radius:var(--radius);
  padding:1.2rem 1.2rem 1rem;
  box-shadow: var(--shadow-primary);
}
.eyebrow{
  display:inline-block;font-size:.85rem;letter-spacing:.2px;color:var(--accent);
  padding:.2rem .5rem;border-radius:999px;border:1px solid rgba(168,255,96,0.5);
  background:rgba(168,255,96,0.07);box-shadow: var(--shadow-accent);
}
.post-title{
  margin:.6rem 0 .4rem 0;line-height:1.25;font-size:clamp(1.5rem, 2.5vw, 2.25rem);
  color:var(--text);text-shadow: 0 0 10px rgba(0,229,255,0.15);
}
.post-meta{margin:0 0 1rem 0;opacity:.75}
.cover{
  height:220px;border-radius:12px;margin-top:.4rem;
  background:
    linear-gradient(0deg, rgba(0,229,255,0.12), rgba(0,229,255,0.12)),
    repeating-linear-gradient(90deg, rgba(255,255,255,0.04) 0 2px, transparent 2px 6px),
    linear-gradient(180deg, rgba(168,255,96,0.06), rgba(16,24,35,0.0));
  border:1px solid rgba(0,229,255,0.25);
  box-shadow: var(--shadow-primary);
}

.post-content{
  margin-top:1rem;
  background:var(--surface);
  border:1px solid rgba(0,229,255,0.25);
  border-radius:var(--radius);
  padding:1.2rem;
  box-shadow: var(--shadow-primary);
}
.post-content p{margin:.8rem 0}
.post-content h2,.post-content h3{
  margin:1.2rem 0 .5rem 0;line-height:1.3;color:var(--text);
  text-shadow: 0 0 8px rgba(0,229,255,0.18);
}
.post-content ul{padding-left:1.2rem}
.post-content li{margin:.4rem 0}
code{
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  font-size:.95em;color:var(--primary)
}
pre{
  margin:1rem 0;padding:1rem;border-radius:12px;
  background:rgba(0,0,0,0.35);
  border:1px solid rgba(0,229,255,0.3);
  overflow:auto;box-shadow: var(--shadow-primary);
}
pre code{color:var(--text)}
.callout{
  margin:1rem 0;padding:.9rem 1rem;border-radius:12px;
  background:rgba(168,255,96,0.06);
  border:1px solid rgba(168,255,96,0.45);
  color:var(--text);box-shadow: var(--shadow-accent);
}
.figure{margin:1rem 0}
.figure-img{
  height:180px;border-radius:12px;
  background:
    linear-gradient(0deg, rgba(0,229,255,0.10), rgba(0,229,255,0.10)),
    repeating-linear-gradient(0deg, rgba(255,255,255,0.04) 0 2px, transparent 2px 6px),
    linear-gradient(180deg, rgba(16,24,35,0.0), rgba(0,0,0,0.25));
  border:1px solid rgba(0,229,255,0.25);
  box-shadow: var(--shadow-primary);
}
.figure-caption{opacity:.75;font-size:.95rem;margin-top:.4rem}
.coverr {
  position: relative;
  height: 220px;
  background: rgba(0, 255, 150, 0.05);
  border: 1px solid rgba(0, 255, 150, 0.2);
  overflow: hidden;
  border-radius: 12px;
}

.code-line {
  position: absolute;
  font-family: monospace;
  font-size: 14px;
  color: #e4e4e4;
  opacity: 0.8;
  animation: fall 6s linear infinite;
}

@keyframes fall {
  0% {
    transform: translateY(-30px);
    opacity: 0;
  }
  10% {
    opacity: 1;
  }
  100% {
    transform: translateY(290px);
    opacity: 0;
  }
}

/* Footer */
.site-footer{
  margin-top:2rem;padding:2rem 0;background:rgba(16,24,35,0.6);
  border-top:1px solid rgba(0,229,255,0.2);
}
.footer-inner{
  display:grid;gap:1.2rem;
  grid-template-columns: 1fr;
}
.footer-brand p{opacity:.8;margin:.4rem 0 0}
.footer-nav{
  display:grid;gap:1rem;grid-template-columns: repeat(2, minmax(0,1fr));
}
.footer-nav h3{margin:0 0 .4rem 0}
.footer-nav ul{list-style:none;margin:0;padding:0;display:grid;gap:.35rem}
.footer-nav a{color:var(--text);opacity:.85}

@media (min-width: 768px){
  .footer-inner{grid-template-columns: 1.3fr 1fr}
}
.footer-meta{
  margin-top:1rem;border-top:1px solid rgba(0,229,255,0.2);padding-top:1rem;opacity:.7
}