:root {
  --blue: #0077b6;
  --navy: #003049;
  --sky: #e9f5ff;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Segoe UI", Arial, sans-serif;
  color: var(--navy);
  background: #fff;
}

.container {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 16px;
}

/* Header */
.site-header {
  background: #fff;
  border-bottom: 1px solid #eef;
  position: sticky;
  top: 0;
  z-index: 100;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 0;
}
.logo img {
  height: 50px;
}
.main-nav ul {
  list-style: none;
  display: flex;
  gap: 18px;
  margin: 0;
  padding: 0;
}
.main-nav a {
  text-decoration: none;
  color: var(--navy);
  font-weight: 500;
}
.whatsapp {
  background: #25D366;
  color: #fff;
  padding: 8px 12px;
  border-radius: 8px;
  text-decoration: none;
}

/* Hero */
.hero {
  background: linear-gradient(180deg, var(--sky), #fff);
  padding: 80px 0;
  text-align: center;
}
.hero h1 {
  margin: 0;
  font-size: 2.4rem;
  color: var(--navy);
}
.hero p {
  color: #444;
  margin-top: 10px;
  margin-bottom: 30px;
}
.btn {
  background: var(--blue);
  color: #fff;
  padding: 10px 16px;
  border-radius: 8px;
  text-decoration: none;
  margin: 0 8px;
}
.btn.outline {
  background: transparent;
  border: 2px solid var(--blue);
  color: var(--blue);
}

/* Cards */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 18px;
  margin-top: 16px;
}
.card {
  background: #fff;
  border: 1px solid #eef;
  border-radius: 12px;
  padding: 16px;
  text-decoration: none;
  color: inherit;
  box-shadow: 0 2px 6px rgba(0,0,0,0.04);
  transition: .2s;
}
.card:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 16px rgba(0,0,0,0.1);
}

/* Footer */
.site-footer {
  background: #f8fafc;
  border-top: 1px solid #eef;
  margin-top: 60px;
  padding: 24px 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
}
.footer-grid h4 {
  margin-bottom: 10px;
}

/* WhatsApp butonu */
.wp-btn {
  display: inline-block;
  margin-top: 24px;
  background: #25D366;
  color: #fff;
  padding: 10px 16px;
  border-radius: 10px;
  text-decoration: none;
  font-weight: 600;
}
.wp-btn:hover {
  background: #1ea654;
}