:root {
  --font-main: "Roboto", sans-serif;
  --color-bg: #f4f4f4;
  --color-primary: #00274d;
  --color-secondary: #333333;
  --color-light: #ffffff;

  --spacing-sm: 0.5rem;
  --spacing-base: 1rem;
  --spacing-lg: 0.9rem;

  --radius: 10px;
  --shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

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

body {
  font-family: var(--font-main);
  background-color: var(--color-bg);
  color: var(--color-secondary);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  line-height: 1.5;
}

header {
  background-color: var(--color-primary);
  color: var(--color-light);
  padding: var(--spacing-lg) var(--spacing-base);
  text-align: center;
}

#course-title {
  display: block;
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: var(--spacing-base);
}

nav {
  display: flex;
  justify-content: center;
  gap: 2rem;
  background-color: var(--color-secondary);
  padding: var(--spacing-sm);
}

nav a {
  color: var(--color-light);
  text-decoration: none;
  font-weight: bold;
  padding: 0.3rem 0.5rem;
  transition: all 0.2s ease;
  border-radius: 5px;
}

nav a:hover {
  background-color: var(--color-light);
  color: var(--color-primary);
}

main {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--spacing-lg);
  display: grid;
  grid-template-columns: 2fr 1fr;
  column-gap: 2rem;
  flex: 1;
}

main h1 {
  grid-column: span 2;
  text-align: center;
  margin-bottom: var(--spacing-lg);
  font-size: 2rem;
  color: var(--color-primary);
}

/* ---------------------------
   Cards
--------------------------- */
.card {
  background: var(--color-light);
  padding: var(--spacing-lg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  text-align: justify;
}

.card-title {
  background-color: var(--color-primary);
  color: var(--color-light);
  padding: var(--spacing-sm);
  border-radius: var(--radius);
  text-align: center;
  margin-bottom: var(--spacing-base);
}

/* About Section */
.about-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  column-gap: 5rem;
  row-gap: 1rem;
  align-items: center;
}

.image-about {
  border-radius: var(--radius);
}

.food-grid {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 1rem;
  align-items: start;
}

/* Resources Section */
.resources ul {
  list-style: none;
  padding: 0;
  text-align: center;
}

.resources li {
  margin: 0.5rem 0;
}

.resources a {
  color: var(--color-primary);
  font-weight: bold;
  text-decoration: none;
  transition: color 0.2s ease;
}

.resources a:hover {
  color: var(--color-secondary);
}

footer {
  background-color: var(--color-primary);
  color: var(--color-light);
  text-align: center;
  padding: var(--spacing-base);
  font-size: 0.9rem;
}