:root {
  --color-primary: #007bff; 
  --color-secondary: #28a745;
  --color-text-dark: #333;
  --color-text-light: #666;
  --color-bg-primary: #f8f9fa;
  --color-bg-secondary: #ffffff;
  --color-border: #ddd;
  --font-family-primary: 'Helvetica Neue', Arial, sans-serif;
  --font-family-serif: 'Garamond', Georgia, serif;
  --font-family-mono: 'Courier New';
}

body[data-theme="dark"] {
  --color-primary: #5cb85c;    /* Accessible Green for primary accent */
  --color-secondary: #6aa1ff;  /* Accessible Blue for secondary accent */
  --color-text-dark: #e0e0e0;  /* Off-white text */
  --color-text-light: #b0b0b0; /* Dimmer secondary text */
  --color-bg-primary: #121212; /* Deep dark background */
  --color-bg-secondary: #1e1e1e;    /* Slightly lighter card background */
  --color-border: #333;       /* Darker border */
}

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

body {
  font-family: var(--font-family-primary);
  line-height: 1.6;
  color: var(--color-text-dark);
  background-color: var(--color-bg-primary);
  padding-top: 0;
}

a:link, a:visited {
  text-decoration: none;
  color: var(--color-primary);
}

a:hover, a:active {
  color: var(--color-secondary);
}

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

a:focus, button:focus {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
}

h1, h3 {
  margin-bottom: 0.5em;
  color: var(--color-text-dark);
}

.header {
  background-color: var(--color-bg-secondary);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15px 20px;
}

.logo {
  font-size: 1.8em;
  font-weight: bold;
  align-items: center;
  color: var(--color-primary);
  width: 30%;
  height: auto;
}

.nav ul {
  list-style: none;
  display: flex;
  gap: 25px;
  align-items: center;
}

.nav a:link {
  text-decoration: none;
  color: var(--color-text-dark);
  font-weight: 500;
  transition: color 0.3s;
}

.nav a:visited {
  text-decoration: none;
  color: var(--color-text-dark);
  font-weight: 500;
  transition: color 0.3s;
}

.nav a:hover {
  text-decoration: none;
  color: var(--color-primary);
  font-weight: 500;
  transition: color 0.3s;
}

.nav a:active {
  text-decoration: none;
  color: var(--color-primary);
  font-weight: 500;
  transition: color 0.3s;
}

.button a:link {
  color: var(--color-bg-secondary);
}

.button a:visited {
  color: var(--color-bg-secondary);
}

.contact-button {
  display: inline-block;
  background-color: var(--color-primary);
  padding: 15px 30px;
  font-size: 1.1em;
  font-weight: 600;
  border: none;
  border-radius: 8px;
  text-decoration: none;
  cursor: pointer;
  transition: background-color 0.3s, transform 0.2s;
  margin-top: 20px;
}

.contact-button:hover {
  transform: translateY(-2px);
}

.contact-button.large-button {
  padding: 20px 40px;
  font-size: 1.2em;
  margin-bottom: 30px;
}

.odd-section {
  background-color: var(--color-bg-primary);
  text-align: center;
  padding-top: 80px;
  padding-bottom: 40px;
}

.even-section {
  background-color: var(--color-bg-secondary);
  text-align: center;
  padding-top: 80px;
  padding-bottom: 40px;
}

.odd-section h1 {
  font-size: 3em;
  margin-bottom: 10px;
  color: var(--color-text-dark);
}

.odd-section h2 {
  font-size: 2em;
  margin-bottom: 40px;
  border-bottom: 3px solid var(--color-primary);
  display: inline-block;
  padding-bottom: 5px;
}

.even-section h2 {
  font-size: 2em;
  margin-bottom: 40px;
  border-bottom: 3px solid var(--color-primary);
  display: inline-block;
  padding-bottom: 5px;
}

.subtitle {
  font-size: 1.3em;
  color: var(--color-text-dark);
  padding-top: 40px;
  margin-bottom: 30px;
  text-align: center;
}

.prose {
  max-width: 800px;
  text-align: left;
}

.prose-text p {
  margin-bottom: 1em;
  color: var(--color-text-dark);
}

.prose-list {
  list-style: none;
  padding-top: 20px;
}

.prose-list li {
  font-size: 1.1em;
  margin-bottom: 10px;
  padding-left: 1.5em;
  position: relative;
}

.prose-list li::before {
  content: "→";
  position: absolute;
  left: 0;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.service-card {
  background: var(--color-bg-secondary);
  padding: 30px;
  border-radius: 10px;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.08);
  transition: transform 0.3s;
  text-align: left;
}

.service-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}

.service-card h3 {
  color: var(--color-primary);
  margin-top: 0;
}

.contact {
  display: inline-block;
  text-align: left;
  max-width: 500px;
}


.contact p {
  font-size: 1.3em;
  color: var(--color-text-dark);
}

.footer {
  background-color: #333;
  color: #aaa;
  text-align: center;
  padding: 20px 0;
  font-size: 0.9em;
}


@media (max-width: 768px) {
  .logo {
    font-size: 1.0em;
    width: 50%;
  }
  .header .container {
    flex-direction: column;
    text-align: center;
    gap: 15px;
    padding: 15px;
  }
  .nav ul {
    flex-direction: column;
    gap: 5px;
    margin-top: 5px;
  }
  .services-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .logo {
    font-size: 1.0em;
    width: 50%;
  }
  .header .container {
    flex-direction: column;
    text-align: center;
    gap: 15px;
    padding: 15px;
  }
  .nav ul {
    flex-direction: column;
    gap: 5px;
    margin-top: 5px;
  }
  .services-grid {
    grid-template-columns: 1fr;
  }
}