/* ===== Base Reset ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Segoe UI', Tahoma, Arial, sans-serif;
}

body {
  background: #f9fafb;
  color: #1f2937;
  line-height: 1.6;
}

/* ===== Layout ===== */
.container {
  max-width: 1200px;
  margin: auto;
  padding: 0 20px;
}

/* ===== Header ===== */
header {
  background: #ffffff;
  border-bottom: 1px solid #e5e7eb;
  padding: 16px 0;
}

header h1 {
  font-size: 22px;
  font-weight: 700;
}

nav a {
  margin-left: 20px;
  text-decoration: none;
  color: #374151;
  font-weight: 500;
}

nav a:hover {
  color: #2563eb;
}

/* ===== Hero ===== */
.hero {
  padding: 80px 20px;
  background: linear-gradient(135deg, #2563eb, #1e40af);
  color: white;
  text-align: center;
}

.hero h2 {
  font-size: 42px;
  margin-bottom: 20px;
}

.hero p {
  font-size: 18px;
  opacity: 0.95;
}

.btn {
  display: inline-block;
  margin-top: 25px;
  background: #22c55e;
  color: white;
  padding: 14px 28px;
  border-radius: 6px;
  text-decoration: none;
  font-weight: 600;
}

.btn:hover {
  background: #16a34a;
}

/* ===== Cards ===== */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
  margin: 60px 0;
}

.card {
  background: white;
  border-radius: 10px;
  padding: 28px;
  box-shadow: 0 10px 25px rgba(0,0,0,0.06);
}

.card h3 {
  margin-bottom: 10px;
}

/* ===== Footer ===== */
footer {
  background: #111827;
  color: #9ca3af;
  padding: 40px 20px;
  margin-top: 60px;
  text-align: center;
}

/* ===== WhatsApp Floating Button ===== */
.whatsapp {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background: #25d366;
  color: white;
  padding: 14px 18px;
  border-radius: 50px;
  font-weight: 600;
  text-decoration: none;
  box-shadow: 0 10px 25px rgba(0,0,0,0.2);
}

.whatsapp:hover {
  background: #1ebe5d;
}