body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  background: #f5f7fb;
  color: #1a1a1a;
}

.container {
  max-width: 1000px;
  margin: auto;
  padding: 20px;
}

header {
  background: #002d72;
  color: white;
}

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

.logo span {
  color: #67d2df;
}

nav a {
  color: white;
  margin-left: 20px;
  text-decoration: none;
  font-size: 0.9rem;
}

.hero {
  text-align: center;
  padding: 60px 20px;
}

.subtitle {
  color: #6b7280;
}

.tip-card {
  background: white;
  padding: 30px;
  margin-top: 30px;
  border-radius: 12px;
  box-shadow: 0 10px 25px rgba(0,0,0,0.08);
  transition: transform 0.2s ease;
}

.tip-card:hover {
  transform: translateY(-4px);
}

.tip-card button {
  margin-top: 20px;
  background: #002d72;
  color: white;
  border: none;
  padding: 10px 18px;
  border-radius: 6px;
  cursor: pointer;
}

.score {
  margin-top: 30px;
}

.score-bar {
  height: 10px;
  background: #e5e7eb;
  border-radius: 5px;
  overflow: hidden;
  margin: 10px 0;
}

#scoreFill {
  height: 100%;
  background: #67d2df;
  width: 0%;
  transition: width 1s ease;
}

.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  text-align: center;
  gap: 20px;
}

.stat-number {
  font-size: 1.5rem;
  color: #002d72;
  font-weight: bold;
}

.cta {
  text-align: center;
  margin: 60px auto;
}

.cta button {
  background: #67d2df;
  border: none;
  padding: 12px 22px;
  border-radius: 6px;
  cursor: pointer;
}

footer {
  background: #002d72;
  color: white;
  text-align: center;
  font-size: 0.8rem;
}

.subtle {
  opacity: 0.6;
  margin-top: 5px;
}

.modal {
  display: none;
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: rgba(0,0,0,0.5);
}

.modal-content {
  background: white;
  padding: 30px;
  border-radius: 10px;
  margin: 15% auto;
  max-width: 300px;
  text-align: center;
}