:root {
  --bg: #0f172a;
  --surface: #1e293b;
  --surface-hover: #334155;
  --text: #e2e8f0;
  --text-muted: #94a3b8;
  --accent: #38bdf8;
  --accent-hover: #0ea5e9;
  --border: #334155;
  --success: #4ade80;
  --warning: #fbbf24;
  --danger: #f87171;
  --gradient-1: #8b5cf6;
  --gradient-2: #06b6d4;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  min-height: 100vh;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.2s;
}

a:hover {
  color: var(--accent-hover);
}

header {
  padding: 2rem 0;
  border-bottom: 1px solid var(--border);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.logo-icon {
  font-size: 1.8rem;
}

.logo span {
  background: linear-gradient(135deg, var(--gradient-1), var(--gradient-2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

nav ul {
  display: flex;
  list-style: none;
  gap: 2rem;
}

nav a {
  color: var(--text-muted);
  font-weight: 500;
  padding: 0.5rem 0;
  position: relative;
}

nav a:hover,
nav a.active {
  color: var(--text);
}

nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: width 0.2s;
}

nav a:hover::after,
nav a.active::after {
  width: 100%;
}

.hero {
  padding: 4rem 0;
  text-align: center;
}

.hero h1 {
  font-size: 3rem;
  font-weight: 700;
  margin-bottom: 1rem;
  line-height: 1.2;
}

.hero-gradient {
  background: linear-gradient(135deg, var(--gradient-1), var(--accent), var(--gradient-2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: 1.25rem;
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto 2rem;
}

.hero-tags {
  display: flex;
  justify-content: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.tag {
  background: var(--surface);
  padding: 0.5rem 1rem;
  border-radius: 2rem;
  font-size: 0.875rem;
  color: var(--text-muted);
  border: 1px solid var(--border);
}

.section-title {
  font-size: 1.75rem;
  font-weight: 600;
  margin-bottom: 2rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.section-title::before {
  content: '';
  width: 4px;
  height: 1.5rem;
  background: linear-gradient(180deg, var(--gradient-1), var(--accent));
  border-radius: 2px;
}

.posts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 2rem;
  margin-bottom: 4rem;
}

.post-card {
  background: var(--surface);
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--border);
  transition: transform 0.3s, box-shadow 0.3s, border-color 0.3s;
  display: flex;
  flex-direction: column;
}

.post-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
  border-color: var(--accent);
}

.post-image {
  height: 180px;
  background: linear-gradient(135deg, var(--gradient-1) 0%, var(--gradient-2) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
}

.post-image.ia { background: linear-gradient(135deg, #8b5cf6, #d946ef); }
.post-image.web { background: linear-gradient(135deg, #f97316, #eab308); }
.post-image.json { background: linear-gradient(135deg, #a855f7, #ec4899); }
.post-image.logica { background: linear-gradient(135deg, #14b8a6, #22c55e); }

.post-content {
  padding: 1.5rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.post-meta {
  display: flex;
  gap: 1rem;
  margin-bottom: 0.75rem;
  font-size: 0.875rem;
  color: var(--text-muted);
}

.post-category {
  color: var(--accent);
  font-weight: 500;
}

.post-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
  color: var(--text);
  line-height: 1.4;
}

.post-title:hover {
  color: var(--accent);
}

.post-excerpt {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 1.25rem;
  flex: 1;
}

.post-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}

.read-more {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--accent);
  font-weight: 500;
}

.read-more:hover {
  gap: 0.75rem;
}

.post-stats {
  display: flex;
  gap: 1rem;
  font-size: 0.875rem;
  color: var(--text-muted);
}

.about-section {
  background: var(--surface);
  border-radius: 12px;
  padding: 3rem;
  margin: 4rem 0;
  border: 1px solid var(--border);
}

.about-content {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 2rem;
  align-items: center;
}

.about-avatar {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--gradient-1), var(--gradient-2));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
}

.about-text h3 {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
}

.about-text p {
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.about-links {
  display: flex;
  gap: 1rem;
}

.social-link {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  background: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  transition: background 0.2s, transform 0.2s;
}

.social-link:hover {
  background: var(--accent);
  transform: scale(1.1);
}

footer {
  padding: 3rem 0;
  border-top: 1px solid var(--border);
  text-align: center;
  margin-top: 4rem;
}

footer p {
  color: var(--text-muted);
  font-size: 0.95rem;
}

footer a {
  color: var(--text);
}

footer a:hover {
  color: var(--accent);
}

@media (max-width: 768px) {
  .hero h1 {
    font-size: 2rem;
  }
  
  .nav-container {
    flex-direction: column;
    text-align: center;
  }
  
  nav ul {
    gap: 1rem;
  }
  
  .posts-grid {
    grid-template-columns: 1fr;
  }
  
  .about-content {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .about-links {
    justify-content: center;
  }
}