/* ==== Global reset & base ==== */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.5;
  background: #f5f5f5;
  color: #222;
}

/* ==== Header & navigation ==== */
header {
  background: #0b3a63;
  color: #fff;
  padding: 1rem 1.5rem;
  border-bottom: 4px solid #0d5088;
}

.brand {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.brand h1 {
  font-size: 1.5rem;
  letter-spacing: 0.03em;
}

.brand span {
  font-size: 0.85rem;
  opacity: 0.9;
}

header .brand a {
  color: #e4f1ff;
  text-decoration: none;
}

nav {
  margin-top: 0.75rem;
}

nav ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

nav a {
  color: #e4f1ff;
  text-decoration: none;
  font-size: 0.95rem;
  padding: 0.25rem 0.75rem;
  border-radius: 999px;
}

nav a:hover,
nav a:focus {
  background: #0d5088;
}

nav a.active {
  background: #ffffff;
  color: #0b3a63;
  font-weight: 600;
}

/* ==== Layout container & main ==== */
.container {
  max-width: 1100px;
  margin: 1.5rem auto;
  padding: 0 1rem 2rem;
  background: #fff;
  border-radius: 8px;
  border: 1px solid #ddd;
}

main {
  padding: 1.5rem 1rem 2rem;
}

/* ==== Typography ==== */
h2 {
  font-size: 1.4rem;
  margin-bottom: 0.5rem;
  color: #0b3a63;
}

h3 {
  font-size: 1.1rem;
  margin-top: 1.25rem;
  margin-bottom: 0.4rem;
  color: #0b3a63;
}

p {
  margin-bottom: 0.75rem;
  max-width: 80ch;
}

ul {
  margin-left: 1.25rem;
  margin-bottom: 0.75rem;
}

/* ==== Home / general components ==== */
.hero {
  margin-bottom: 1.5rem;
  border-bottom: 1px solid #eee;
  padding-bottom: 1rem;
}

.hero-tagline {
  font-size: 1.1rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1rem;
  margin-top: 0.75rem;
}

.card {
  border: 1px solid #e0e0e0;
  border-radius: 6px;
  padding: 1rem;
  background: #fafafa;
  font-size: 0.95rem;
}

.card h3,
.card h4 {
  color: #0b3a63;
  margin-bottom: 0.4rem;
}

/* ==== Contact / info boxes ==== */
.contact-box {
  margin-top: 1.25rem;
  padding: 0.75rem 1rem;
  border-left: 3px solid #0b3a63;
  background: #f2f7fc;
  font-size: 0.95rem;
}

.contact-box a {
  color: #0b3a63;
  text-decoration: underline;
}

.contact-card {
  border: 1px solid #e0e0e0;
  border-radius: 6px;
  padding: 1rem;
  background: #fafafa;
  font-size: 0.95rem;
  max-width: 480px;
}

.contact-card a {
  color: #0b3a63;
  text-decoration: underline;
}

/* ==== Products page extras ==== */
.card dl {
  margin-top: 0.4rem;
  font-size: 0.9rem;
}

.card dt {
  font-weight: 600;
  display: inline;
}

.card dd {
  display: inline;
  margin: 0 0 0.25rem 0.25rem;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 0.5rem;
  font-size: 0.9rem;
}

th, td {
  border: 1px solid #e0e0e0;
  padding: 0.4rem 0.5rem;
  text-align: left;
}

th {
  background: #f0f4fa;
  font-weight: 600;
}

.note {
  font-size: 0.85rem;
  color: #555;
  margin-top: 0.5rem;
}

/* ==== Footer ==== */
footer {
  text-align: center;
  font-size: 0.8rem;
  color: #666;
  padding: 1rem;
}
/* ==== Product page layout ==== */
.product-layout {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
}

.product-main {
  flex: 2 1 280px;
}

.product-sidebar {
  flex: 1 1 220px;
}

.product-image {
  width: 100%;
  max-width: 500px;
  border: 1px solid #ddd;
  border-radius: 4px;
  background: #fafafa;
  padding: 0.5rem;
}

.product-sidebar-section {
  margin-bottom: 1rem;
  font-size: 0.9rem;
}

.product-sidebar-section h3 {
  margin-top: 0;
  font-size: 1rem;
}

.spec-table {
  margin-top: 0.5rem;
}

/* ==== Responsive tweaks ==== */
@media (max-width: 600px) {
  header {
    padding: 0.75rem 1rem;
  }

  .container {
    margin: 1rem;
    padding: 0 0.75rem 1.5rem;
  }

  table {
    font-size: 0.85rem;
  }
}