/* Google Font (Poppins) */
@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;600&display=swap');

/* Tema Renkleri (Root Değişkenler) */
:root {
  --primary: #1e3a8a;    /* Lacivert-mavi */
  --secondary: #ef4444;  /* Kırmızı vurgu */
  --bg: #f8fafc;         /* Açık gri arka plan */
}

* {
  margin: 0; 
  padding: 0; 
  box-sizing: border-box; 
  font-family: 'Poppins', sans-serif;
}

body {
  background: var(--bg); 
  color: #111; 
  line-height: 1.6;
}

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* NAVIGATION */
nav {
  display: flex; 
  justify-content: space-between; 
  align-items: center;
  padding: 1.2rem 0;
}

nav .logo {
  font-size: 1.6rem; 
  font-weight: 600; 
  color: var(--primary);
}

/* HERO SECTION */
.hero {
  position: relative; 
  height: 70vh; 
  display: flex; 
  align-items: center;
  /* Usa map arkaplan: assets/usa_map_background.png */
  background: url('../usa_map_background.png') center/cover no-repeat;
  border-radius: 1rem; 
  overflow: hidden; 
  margin-bottom: 3rem;
}

.hero::after {
  content: ""; 
  position: absolute; 
  inset: 0; 
  background: rgba(0,0,0,.55);
}

.hero-content {
  position: relative; 
  color: #fff; 
  padding: 0 2rem; 
  max-width: 600px;
}

.hero h1 {
  font-size: 2.8rem; 
  font-weight: 600; 
  margin-bottom: 1rem; 
  line-height: 1.2;
}

.hero p {
  font-size: 1.1rem; 
  margin-bottom: 2rem;
}

.btn {
  display: inline-block; 
  background: var(--secondary); 
  color: #fff;
  padding: .9rem 2rem; 
  border-radius: 50px; 
  font-weight: 600; 
  transition: .3s;
}

.btn:hover {
  transform: translateY(-3px); 
  box-shadow: 0 8px 20px rgba(0,0,0,.15);
}

/* SECTION HEADINGS */
.section {
  margin-bottom: 3.5rem;
}

.section h2 {
  font-size: 1.8rem; 
  text-align: center; 
  margin-bottom: 1.8rem; 
  color: var(--primary);
}

/* FEATURES GRID */
.features-grid {
  display: grid; 
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
}

/* CARD STYLE */
.card {
  background: #fff; 
  border-radius: .75rem; 
  padding: 2rem; 
  box-shadow: 0 4px 12px rgba(0,0,0,.06);
  transition: .25s;
  text-align: center;
}

.card:hover {
  transform: translateY(-4px); 
  box-shadow: 0 8px 20px rgba(0,0,0,.08);
}

.card img {
  width: 50px; 
  margin-bottom: 1rem;
}

/* TESTIMONIALS */
.testimonials {
  display: flex; 
  flex-wrap: wrap; 
  gap: 1.5rem; 
  justify-content: center;
}

.testimonial {
  flex: 1 1 300px; 
  background: #fff; 
  border-left: 4px solid var(--secondary);
  padding: 1.5rem; 
  border-radius: .5rem; 
  box-shadow: 0 4px 12px rgba(0,0,0,.05);
}

.testimonial p {
  margin-bottom: .8rem; 
  font-style: italic;
}

.testimonial .author {
  font-weight: 600; 
  color: var(--primary);
}

/* FOOTER */
footer {
  text-align: center; 
  padding: 2rem 0; 
  font-size: .9rem; 
  color: #555;
}

/* RESPONSIVE */
@media (max-width: 768px) {
  .hero {
    height: 50vh;
    margin-bottom: 2rem;
    border-radius: .5rem;
  }
  .hero h1 {
    font-size: 2rem;
  }
  .hero p {
    font-size: 1rem;
  }
}