@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&display=swap');
:root {
  --bg: #0c111b;
  --bg-gradient: radial-gradient(140% 140% at 10% 10%, #16203a 0%, #0c111b 55%);
  --panel: #121a2b;
  --card: #1a2336;
  --accent: #60d2f7;
  --muted: #9fb0d3;
  --text: #e9eefc;
  --shadow: 0 18px 40px rgba(0,0,0,0.35);
  --radius: 14px;
}
body.light {
  --bg: #f5f7fb;
  --bg-gradient: radial-gradient(120% 120% at 10% 10%, #f7fbff 0%, #eef2f8 60%);
  --panel: #ffffff;
  --card: #f7f9fc;
  --accent: #0f9ed5;
  --muted: #55627a;
  --text: #1b2432;
  --shadow: 0 14px 32px rgba(15, 36, 66, 0.12);
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: 'Space Grotesk', system-ui, -apple-system, sans-serif;
  background: var(--bg-gradient);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  transition: background 0.3s ease, color 0.3s ease;
}
header {
  position: sticky; top: 0; z-index: 10;
  backdrop-filter: blur(12px);
  background: rgba(12,17,27,0.9);
  background: color-mix(in srgb, var(--bg) 85%, transparent);
  border-bottom: 1px solid rgba(255,255,255,0.05);
}
nav {
  max-width: 1200px; margin: 0 auto; padding: 14px 20px;
  display: grid; align-items: center; gap: 12px;
  grid-template-columns: auto auto 1fr auto;
}
.brand { font-weight: 700; letter-spacing: 0.5px; }
.brand span { color: var(--accent); }
.theme-toggle {
  border: 1px solid rgba(255,255,255,0.16);
  background: var(--panel);
  color: var(--text);
  border-radius: 999px;
  padding: 8px 12px;
  cursor: pointer;
  box-shadow: var(--shadow);
}
.nav-links {
  display: flex; gap: 16px; list-style: none; padding: 0; margin: 0;
  justify-self: end;
}
.nav-links a {
  color: var(--text); text-decoration: none; padding: 8px 10px; border-radius: 10px;
  transition: background 0.2s ease, color 0.2s ease;
}
.nav-links a:hover { background: rgba(255,255,255,0.07); color: #fff; }
.hamburger {
  display: none; flex-direction: column; gap: 5px; border: none; background: transparent; cursor: pointer;
  justify-self: end;
}
.hamburger span {
  width: 26px; height: 2px; background: var(--text); border-radius: 999px; transition: transform 0.3s ease;
}
main { max-width: 1200px; margin: 0 auto; padding: 30px 20px 80px; }
section { margin: 28px 0 40px; }
.hero {
  display: grid; gap: 20px; padding: 26px; border-radius: var(--radius);
  background: linear-gradient(135deg, rgba(96,210,247,0.16), rgba(12,17,27,0.8));
  border: 1px solid rgba(255,255,255,0.06);
  box-shadow: var(--shadow);
}
.hero h1 { margin: 0 0 6px; font-size: 2.3rem; }
.pill {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(255,255,255,0.08); color: var(--text);
  padding: 8px 12px; border-radius: 999px; font-size: 0.9rem;
}
.blog-controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin: 12px 0;
  flex-wrap: wrap;
}
.blog-controls input {
  flex: 1;
  min-width: 220px;
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid rgba(255,255,255,0.12);
  background: var(--panel);
  color: var(--text);
}
.carousel-buttons {
  display: flex;
  gap: 8px;
}
.carousel-buttons button {
  border: 1px solid rgba(255,255,255,0.16);
  background: var(--panel);
  color: var(--text);
  border-radius: 12px;
  padding: 8px 12px;
  cursor: pointer;
  box-shadow: var(--shadow);
}
.carousel-viewport {
  overflow: hidden;
}
.blog-grid {
  display: flex;
  gap: 18px;
  transition: transform 0.5s ease;
  will-change: transform;
}
.card {
  background: var(--card); border: 1px solid rgba(255,255,255,0.05);
  border-radius: var(--radius); padding: 18px; box-shadow: var(--shadow);
  display: grid; gap: 10px; cursor: pointer; transition: transform 0.12s ease, border 0.2s ease;
  min-height: 100%;
  min-width: clamp(260px, 70vw, 360px);
}
.card:hover { transform: translateY(-2px); border-color: rgba(96,210,247,0.4); }
.card img { width: 100%; border-radius: 10px; object-fit: cover; height: 180px; background: #0c111b; }
.meta { color: var(--muted); font-size: 0.95rem; }
.tags { display: flex; gap: 8px; flex-wrap: wrap; }
.tag { padding: 6px 10px; border-radius: 999px; background: rgba(96,210,247,0.12); color: var(--accent); font-size: 0.85rem; }
.detail {
  background: var(--panel); border: 1px solid rgba(255,255,255,0.06);
  border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow);
}
.detail h2 { margin-top: 0; }
.detail img { width: 100%; border-radius: 12px; margin: 12px 0; }
pre {
  background: #0b1323; color: #e7ecf6; padding: 12px 14px; border-radius: 12px;
  overflow: auto; border: 1px solid rgba(255,255,255,0.05); font-size: 0.95rem;
}
code { font-family: 'Fira Code', 'SFMono-Regular', Consolas, monospace; }
footer { color: var(--muted); font-size: 0.95rem; margin-top: 30px; text-align: center; }
body.light pre {
  background: #f0f3fa;
  color: #0f172a;
  border-color: rgba(0,0,0,0.06);
}
.blog-grid::-webkit-scrollbar { height: 8px; }
.blog-grid::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.25); border-radius: 999px; }
body.light .blog-grid::-webkit-scrollbar-thumb { background: rgba(0,0,0,0.25); }
#backToTop {
  position: fixed;
  bottom: 20px; right: 20px;
  border: none;
  background: var(--accent);
  color: #0a0f1a;
  font-weight: 700;
  border-radius: 999px;
  padding: 12px 14px;
  box-shadow: var(--shadow);
  cursor: pointer;
  display: none;
}
.favorite-btn {
  border: 1px solid rgba(255,255,255,0.16);
  background: transparent;
  color: var(--muted);
  border-radius: 12px;
  padding: 6px 8px;
  cursor: pointer;
  justify-self: start;
}
.favorite-btn.active {
  color: var(--accent);
  border-color: var(--accent);
}
.favorite-btn:focus-visible,
.carousel-buttons button:focus-visible,
.theme-toggle:focus-visible,
.hamburger:focus-visible,
#backToTop:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}
.favorites {
  border: 1px dashed rgba(255,255,255,0.1);
  padding: 10px 12px;
  border-radius: var(--radius);
  background: rgba(12,17,27,0.4);
  background: color-mix(in srgb, var(--panel) 80%, transparent);
  display: grid;
  gap: 8px;
  margin-bottom: 12px;
}
.favorites-title { font-weight: 600; color: var(--text); }
.favorites-list {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.favorite-pill {
  padding: 6px 10px;
  border-radius: 12px;
  background: rgba(96,210,247,0.14);
  color: var(--text);
  border: 1px solid rgba(96,210,247,0.5);
  cursor: pointer;
}
body.light .favorite-pill { background: rgba(15,158,213,0.12); border-color: rgba(15,158,213,0.4); color: #0f172a; }
@media (max-width: 900px) {
  nav { align-items: center; }
}
@media (max-width: 720px) {
  .nav-links { position: absolute; inset: 58px 16px auto 16px; flex-direction: column;
    background: var(--panel); padding: 14px; border-radius: var(--radius);
    border: 1px solid rgba(255,255,255,0.06); display: none; }
  .nav-links.open { display: flex; }
  .hamburger { display: flex; }
}
@media (max-width: 540px) {
  .hero h1 { font-size: 1.8rem; }
  .theme-toggle { padding: 6px 10px; }
}