/* =====================
   CSS RESET
===================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

/* =====================
   VARIABLES
===================== */
:root {
  --blue-primary: #1e9bd7;
  --blue-dark: #0b4f6c;
  --yellow-accent: #f4b400;
  --black: #000000;
  --white: #ffffff;
  --max-width: 1200px;
}

/* =====================
   GLOBAL STYLES
===================== */
body {
  font-family: Arial, Helvetica, sans-serif;
  color: var(--black);
  background-color: var(--white);
  line-height: 1.6;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

a {
  text-decoration: none;
  color: inherit;
}

img {
  max-width: 100%;
  display: block;
}

/* =====================
   HEADER
===================== */
header {
  background-color: var(--white);
  border-bottom: 1px solid #eee;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

.nav-links {
  display: flex;
  gap: 24px;
}

.nav-links a {
  font-weight: 600;
  color: var(--blue-dark);
}

.nav-links a:hover {
  color: var(--blue-primary);
}

/* =====================
   HERO SECTION
===================== */
.hero {
  background-color: var(--blue-primary);
  color: var(--white);
  padding: 100px 0;
  text-align: center;
}

.hero h1 {
  font-size: 42px;
  margin-bottom: 16px;
}

.hero p {
  font-size: 18px;
  max-width: 700px;
  margin: 0 auto;
}

/* =====================
   SECTIONS
===================== */
section {
  padding: 80px 0;
}

.section-title {
  font-size: 32px;
  color: var(--blue-dark);
  margin-bottom: 24px;
  text-align: center;
}

/* =====================
   FOOTER
===================== */
footer {
  background-color: var(--blue-dark);
  color: var(--white);
  padding: 40px 0;
  text-align: center;
  font-size: 14px;
}

/* =====================
   GRID / CARDS
===================== */
.grid {
  display: grid;
  gap: 32px;
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.card {
  border: 1px solid #eee;
  border-radius: 8px;
  overflow: hidden;
  background-color: var(--white);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 30px rgba(0,0,0,0.08);
}

.card img {
  height: 200px;
  object-fit: cover;
  width: 100%;
}

.card-body {
  padding: 20px;
}

.card-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--blue-dark);
  margin-bottom: 8px;
}

.card-text {
  font-size: 14px;
  color: #555;
}

/* =====================
   SECTION INTRO
===================== */
.section-intro {
  max-width: 700px;
  margin: 0 auto 48px;
  text-align: center;
  font-size: 16px;
  color: #555;
}