/* === Reset & Base === */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --color-bg: #faf9f7;
  --color-surface: #ffffff;
  --color-text: #2c2c2c;
  --color-text-muted: #6b6b6b;
  --color-accent: #1a3a5c;
  --color-accent-hover: #2a5a8c;
  --color-border: #e0dcd6;
  --font-heading: 'Georgia', 'Times New Roman', serif;
  --font-body: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --max-width: 900px;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.7;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

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

/* === Navigation === */
header {
  position: sticky;
  top: 0;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  z-index: 100;
}

nav {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-accent);
}

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

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

nav ul a {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  letter-spacing: 0.03em;
}

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

/* === Main Content === */
main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
  flex: 1;
}

section {
  padding: 4rem 0;
}

section + section {
  border-top: 1px solid var(--color-border);
}

/* === Hero === */
#hero {
  padding: 6rem 0;
  text-align: center;
}

#hero h1 {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: 0.75rem;
}

#hero p {
  color: var(--color-text-muted);
  font-size: 1.15rem;
  font-style: italic;
}

/* === Sections === */
h2 {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  color: var(--color-accent);
}

/* === Card Grid === */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  padding: 1.5rem;
  transition: box-shadow 0.2s;
}

.card:hover {
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
}

.card h3 {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
  color: var(--color-accent);
}

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

/* === Footer === */
footer {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2rem 1.5rem;
  border-top: 1px solid var(--color-border);
  width: 100%;
}

footer p {
  color: var(--color-text-muted);
  font-size: 0.85rem;
  text-align: center;
}

/* === Responsive === */
@media (max-width: 600px) {
  #hero h1 {
    font-size: 1.75rem;
  }

  nav {
    flex-direction: column;
    gap: 0.75rem;
  }

  nav ul {
    gap: 1rem;
  }

  section {
    padding: 3rem 0;
  }
}