:root {
  --primary-color: #0b69a3;
  --primary-hover: #084c77;
  --secondary-color: #2b8a3e;
  --secondary-hover: #216a30;
  --bg-color: #f8f9fa;
  --card-bg: #ffffff;
  --text-color: #212529;
  --text-muted: #6c757d;
  --border-color: #dee2e6;
  --alert-bg: #fff3cd;
  --alert-border: #ffeeba;
  --alert-text: #856404;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg-color: #121416;
    --card-bg: #1e2227;
    --text-color: #e9ecef;
    --text-muted: #adb5bd;
    --border-color: #343a40;
    --alert-bg: #332701;
    --alert-border: #664d03;
    --alert-text: #ffda6a;
  }
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background-color: var(--bg-color);
  color: var(--text-color);
  line-height: 1.6;
}

.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

header {
  background-color: var(--card-bg);
  border-bottom: 1px solid var(--border-color);
  padding: 2.5rem 0;
  margin-bottom: 2rem;
}

header h1 {
  font-size: 2.2rem;
  margin-bottom: 0.5rem;
}

.tagline {
  color: var(--text-muted);
  font-size: 1.1rem;
}

.card {
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 1.5rem;
  margin-bottom: 1.5rem;
}

.alert-box {
  background-color: var(--alert-bg);
  border-color: var(--alert-border);
  color: var(--alert-text);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}

.service-card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.service-card h3 {
  font-size: 1.3rem;
  margin-bottom: 0.5rem;
}

.service-card p {
  color: var(--text-muted);
  margin-bottom: 1.25rem;
}

.btn {
  display: inline-block;
  padding: 0.6rem 1.2rem;
  font-size: 1rem;
  font-weight: 500;
  text-decoration: none;
  border-radius: 6px;
  text-align: center;
  cursor: pointer;
  transition: background-color 0.15s ease-in-out;
}

.btn-primary {
  background-color: var(--primary-color);
  color: #ffffff;
}

.btn-primary:hover {
  background-color: var(--primary-hover);
}

.btn-secondary {
  background-color: var(--secondary-color);
  color: #ffffff;
}

.btn-secondary:hover {
  background-color: var(--secondary-hover);
}

.btn-outline {
  background-color: transparent;
  color: var(--text-color);
  border: 1px solid var(--border-color);
}

.btn-outline:hover {
  background-color: var(--border-color);
}

.btn-group {
  display: flex;
  gap: 0.5rem;
}

#about ul {
  margin-left: 1.5rem;
  margin-top: 0.75rem;
}

#about li {
  margin-bottom: 0.5rem;
}

footer {
  border-top: 1px solid var(--border-color);
  padding: 2rem 0;
  margin-top: 3rem;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.9rem;
}