/* --- Variables & Reset --- */
:root {
  --bg-color: #0f172a; /* Clean dark blue/gray */
  --text-main: #cbd5e1;
  --text-heading: #f8fafc;
  --accent: #14b8a6; /* Teal accent */
  --accent-hover: #0d9488;
  --card-bg: #1e293b;
  --font-sans: "Inter", sans-serif;
  --radius: 8px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--bg-color);
  color: var(--text-main);
  font-family: var(--font-sans);
  line-height: 1.6;
  font-size: 16px;
}

/* --- Typography --- */
h1,
h2,
h3 {
  color: var(--text-heading);
  margin-bottom: 1rem;
  font-weight: 700;
}

h1 {
  font-size: 2.5rem;
  line-height: 1.2;
}
h2 {
  font-size: 1.75rem;
  margin-top: 2rem;
  border-bottom: 1px solid #334155;
  padding-bottom: 0.5rem;
}
h3 {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
}

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

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

/* --- Layout --- */
.container {
  max-width: 800px; /* Optimal reading width */
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section {
  padding: 4rem 0;
}

/* --- Header & Nav --- */
.site-header {
  padding: 1.5rem 0;
  background-color: rgba(15, 23, 42, 0.9);
  position: sticky;
  top: 0;
  backdrop-filter: blur(10px);
  z-index: 100;
}

.nav-wrapper {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  color: var(--text-heading);
  font-weight: 700;
  font-size: 1.2rem;
}

.nav-links {
  list-style: none;
  display: flex;
  gap: 1.5rem;
}

.nav-links a {
  color: var(--text-main);
}

.nav-links a:hover {
  color: var(--text-heading);
}

/* --- Hero --- */
.hero .lead {
  font-size: 1.15rem;
  margin-bottom: 2rem;
}

.actions {
  display: flex;
  gap: 1rem;
}

/* --- Buttons --- */
.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius);
  font-weight: 600;
  transition: all 0.2s ease;
}

.btn-primary {
  background-color: var(--accent);
  color: #fff;
}

.btn-primary:hover {
  background-color: var(--accent-hover);
  color: #fff;
}

.btn-outline {
  border: 1px solid var(--accent);
  color: var(--accent);
}

.btn-outline:hover {
  background-color: rgba(20, 184, 166, 0.1);
}

/* --- Cards & Previews --- */
.card {
  background-color: var(--card-bg);
  padding: 1.5rem;
  border-radius: var(--radius);
  margin-bottom: 1.5rem;
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
}

.date {
  font-size: 0.9rem;
  color: #94a3b8;
}

.post-preview {
  margin-bottom: 2rem;
}

/* --- Footer --- */
.site-footer {
  padding: 4rem 1.5rem 2rem;
  text-align: center;
}

.social-links {
  list-style: none;
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  margin: 1.5rem 0;
}

.copyright {
  font-size: 0.9rem;
  color: #64748b;
}

/* --- Mobile Adjustments --- */
@media (max-width: 600px) {
  .nav-wrapper {
    flex-direction: column;
    gap: 1rem;
  }
  .card-header {
    flex-direction: column;
  }
}