/*
Theme Name: Open Sensor Network
Theme URI: https://example.com/osn-theme
Author: gerwin
Description: Clean tech theme for Open Sensor Network
Version: 1.0
*/

body {
  font-family: "Roboto", system-ui, -apple-system, sans-serif;
  background: #f5f7fa;
  color: #1f2933;
  margin: 0;
}

a {
  color: #1f6feb; /* blue */
  text-decoration: none;
}

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.2rem 2rem;
  background: #ffffff;
  border-bottom: 1px solid #e1e4ea;
}

header img.logo {
  height: 120px;
}

nav ul {
  list-style: none;
  display: flex;
  gap: 1.5rem;
  margin: 0;
  padding: 0;
}

.hero {
  padding: 4rem 2rem;
  text-align: center;
}

.hero h1 {
  font-family: "Montserrat", system-ui, sans-serif;
  font-size: 2.8rem;
  margin-bottom: 0.5rem;
}

.hero p {
  max-width: 640px;
  margin: 0 auto 1.5rem;
}

.btn {
  display: inline-block;
  padding: 0.8rem 1.6rem;
  border-radius: 999px;
  font-weight: 600;
}

.btn-primary {
  background: #1f6feb;
  color: #ffffff;
}

.btn-outline {
  border: 2px solid #1f6feb;
  color: #1f6feb;
  margin-left: 0.75rem;
}

.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
  padding: 2rem;
}

.feature-card {
  background: #ffffff;
  border-radius: 12px;
  padding: 1.5rem;
  box-shadow: 0 8px 20px rgba(15, 23, 42, 0.05);
}