/* Modern, responsive CSS for Valnora Technologies LLC homepage */
:root {
  --primary: #1a365d;
  --accent: #2b6cb0;
  --background: #f7fafc;
  --text: #22223b;
  --card-bg: #fff;
  --border: #e2e8f0;
  --footer-bg: #1a365d;
  --footer-text: #f7fafc;
  --link: #2b6cb0;
  --link-hover: #1a365d;
  --shadow: 0 2px 8px rgba(30, 41, 59, 0.06);
  --radius: 8px;
  --max-width: 900px;
  --nav-height: 60px;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: 'Segoe UI', 'Roboto', Arial, sans-serif;
  background: var(--background);
  color: var(--text);
  line-height: 1.6;
}

header {
  background: var(--primary);
  color: var(--footer-text);
  position: sticky;
  top: 0;
  z-index: 100;
}

.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--max-width);
  margin: 0 auto;
  height: var(--nav-height);
  padding: 0 1.5rem;
}

.logo {
  font-weight: bold;
  font-size: 1.3rem;
  letter-spacing: 1px;
}

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

.nav-links a {
  color: var(--footer-text);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s;
}

.nav-links a:hover,
.nav-links a:focus {
  color: var(--accent);
}

.hero {
  background: linear-gradient(120deg, var(--primary) 0%, var(--accent) 100%);
  color: var(--footer-text);
  padding: 4rem 1.5rem 3rem 1.5rem;
  text-align: center;
}

.hero-content {
  max-width: 600px;
  margin: 0 auto;
}

.hero h1 {
  font-size: 2.2rem;
  margin-bottom: 1rem;
}

.subheadline {
  font-size: 1.1rem;
  margin-bottom: 2rem;
}

.cta-btn {
  display: inline-block;
  background: var(--footer-text);
  color: var(--primary);
  padding: 0.75em 2em;
  border-radius: var(--radius);
  font-weight: bold;
  text-decoration: none;
  font-size: 1rem;
  box-shadow: var(--shadow);
  transition: background 0.2s, color 0.2s;
}

.cta-btn:hover,
.cta-btn:focus {
  background: var(--accent);
  color: var(--footer-text);
}

.section {
  max-width: var(--max-width);
  margin: 3rem auto;
  padding: 0 1.5rem;
}

.about h2,
.services h2,
.experience h2,
.contact h2 {
  color: var(--primary);
  margin-top: 0;
}

.founder-bio {
  margin-top: 1.5rem;
  background: var(--card-bg);
  border-left: 4px solid var(--accent);
  padding: 1rem 1.5rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.services .service-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  margin-top: 2rem;
}

@media (max-width: 800px) {
  .services .service-cards {
    grid-template-columns: 1fr;
  }
}

.service-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.5rem;
}

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

.service-card ul {
  padding-left: 1.2em;
  margin: 0.5em 0 0 0;
}

.highlights {
  list-style: disc inside;
  margin: 1.5em 0 0 0;
  padding: 0;
}

.contact-details {
  margin-bottom: 1.5rem;
}

address {
  font-style: normal;
  line-height: 1.5;
}

.contact-form {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.5rem;
  max-width: 400px;
}

.contact-form label {
  display: block;
  margin-bottom: 0.7em;
  font-weight: 500;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 0.5em;
  margin-top: 0.2em;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 1em;
  font-family: inherit;
  box-sizing: border-box;
}

.contact-form button {
  margin-top: 1em;
  background: var(--accent);
  color: var(--footer-text);
  border: none;
  padding: 0.7em 1.5em;
  border-radius: var(--radius);
  font-size: 1em;
  font-weight: bold;
  cursor: pointer;
  transition: background 0.2s;
}

.contact-form button:hover,
.contact-form button:focus {
  background: var(--primary);
}

.form-note {
  font-size: 0.9em;
  color: #555;
  margin-top: 1em;
}

footer {
  background: var(--footer-bg);
  color: var(--footer-text);
  padding: 1.5rem 0;
  text-align: center;
}

.footer-content {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 0.5em;
  align-items: center;
}

.legal-note {
  font-size: 0.95em;
  opacity: 0.8;
}

.back-to-top {
  color: var(--footer-text);
  text-decoration: underline;
  font-size: 0.95em;
  margin-top: 0.5em;
}

.back-to-top:hover,
.back-to-top:focus {
  color: var(--accent);
}

@media (max-width: 600px) {
  .navbar {
    flex-direction: column;
    height: auto;
    padding: 1em 0.5em;
    gap: 0.5em;
  }
  .section {
    margin: 2rem auto;
    padding: 0 0.7rem;
  }
  .hero {
    padding: 2.5rem 0.7rem 2rem 0.7rem;
  }
  .contact-form {
    padding: 1em;
  }
}