:root {
  --bg: #0f172a;
  --panel: rgba(30, 41, 59, 0.7);
  --text: #f8fafc;
  --text-muted: #94a3b8;
  --accent: #38bdf8;
  --accent-glow: rgba(56, 189, 248, 0.4);
  --border: rgba(255, 255, 255, 0.1);
  --font-main: 'Outfit', sans-serif;
  --radius: 16px;
  background-color: var(--bg);
}

body {
  margin: 0;
  min-height: 100vh;
  background: radial-gradient(circle at top left, #1e1b4b, var(--bg));
  color: var(--text);
  font-family: var(--font-main);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* Glassmorphism */
.glass {
  background: var(--panel);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.hero {
  text-align: center;
  padding: 100px 20px 60px;
}

.hero h1 {
  font-size: 3.8rem;
  margin: 0 0 16px;
  letter-spacing: -1px;
}

.hero .highlight {
  color: var(--accent);
  text-shadow: 0 0 25px var(--accent-glow);
}

.hero p {
  color: var(--text-muted);
  font-size: 1.25rem;
  max-width: 650px;
  margin: 0 auto;
}

main {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 20px 80px;
}

main h2 {
  font-size: 2rem;
  margin-bottom: 30px;
}

/* Grid Layout */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}

.card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 30px;
  border-radius: var(--radius);
  text-decoration: none;
  color: var(--text);
  background: var(--panel);
  border: 1px solid var(--border);
  backdrop-filter: blur(8px);
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.3s ease, border-color 0.3s ease;
  position: relative;
  overflow: hidden;
}

.card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  transform: translateX(-100%);
  transition: transform 0.6s ease;
}

.card:hover::before {
  transform: translateX(100%);
}

.card:hover {
  transform: translateY(-5px);
  border-color: var(--accent);
  box-shadow: 0 12px 35px var(--accent-glow);
}

.card h3 {
  margin: 0 0 16px;
  font-size: 1.5rem;
}

.category-badge, .badge {
  display: inline-block;
  padding: 6px 14px;
  background: rgba(255,255,255,0.08);
  color: var(--text-muted);
  font-size: 0.85rem;
  font-weight: 700;
  border-radius: 20px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  align-self: flex-start;
  transition: background 0.2s;
}

.card:hover .category-badge {
  background: rgba(56, 189, 248, 0.15);
  color: var(--accent);
}

/* Entry Page */
.entry-page nav {
  max-width: 1100px;
  margin: 0 auto;
  padding: 30px 50px;
}

.entry-page nav a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
  font-size: 1.1rem;
  transition: all 0.2s;
  display: inline-block;
}

.entry-page nav a:hover {
  text-shadow: 0 0 12px var(--accent-glow);
  transform: translateX(-4px);
}

.content-panel {
  border-radius: var(--radius);
  padding: 50px;
  margin-top: 20px;
}

.entry-header {
  margin-bottom: 40px;
}

.entry-header h1 {
  font-size: 3rem;
  margin: 16px 0 8px;
}

.entry-header .subtitle {
  color: var(--text-muted);
  font-size: 1.2rem;
  margin: 0;
}

.entry-header code {
  color: var(--accent);
  background: rgba(56, 189, 248, 0.15);
  padding: 2px 8px;
  border-radius: 6px;
  font-size: 1.1em;
}

.code-block {
  background: #0b1120;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid rgba(255,255,255,0.05);
  margin: 40px 0;
  box-shadow: inset 0 2px 10px rgba(0,0,0,0.5);
}

.code-header {
  background: rgba(255,255,255,0.03);
  padding: 12px 20px;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-muted);
  border-bottom: 1px solid rgba(255,255,255,0.05);
}

pre {
  margin: 0;
  padding: 24px;
  overflow-x: auto;
}

code {
  font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
  font-size: 1rem;
  color: #e2e8f0;
  line-height: 1.5;
}

.explanation h2 {
  font-size: 1.8rem;
  margin-bottom: 16px;
  color: var(--text);
}

.explanation p {
  color: var(--text-muted);
  font-size: 1.1rem;
  line-height: 1.8;
}
/* Cross-Document View Transitions Opt-in */
@view-transition {
  navigation: auto;
}