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

:root {
  --primary: #ffc107;
  --primary-dark: #ffb300;
  --dark: #1a1a1a;
  --light: #f5f5f5;
  --white: #ffffff;
  --text-dark: #333333;
  --text-light: #666666;
  --border: #e0e0e0;
}

body {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  color: var(--text-dark);
  line-height: 1.6;
  background-color: var(--white);
}

html {
  scroll-behavior: smooth;
}

a {
  color: var(--dark);
  text-decoration: none;
  transition: color 0.3s ease;
}

a:hover {
  color: var(--primary-dark);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 15px;
}

header {
  background-color: var(--white);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15px 0;
}

.logo {
  font-size: 24px;
  font-weight: 700;
  color: var(--dark);
  letter-spacing: 1px;
}

.logo span {
  color: var(--primary);
}

nav ul {
  display: flex;
  list-style: none;
  gap: 30px;
  align-items: center;
}

nav a {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-dark);
  transition: color 0.3s ease;
}

nav a:hover {
  color: var(--primary);
}

.btn {
  display: inline-block;
  padding: 12px 28px;
  background-color: var(--primary);
  color: var(--dark);
  border: none;
  border-radius: 4px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: background-color 0.3s ease;
  text-align: center;
}

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

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

.btn-secondary:hover {
  background-color: #333333;
}

.hero {
  background: linear-gradient(135deg, var(--dark) 0%, #2a2a2a 100%);
  color: var(--white);
  padding: 80px 0;
  text-align: center;
}

.hero h1 {
  font-size: 48px;
  margin-bottom: 20px;
  font-weight: 700;
  line-height: 1.2;
}

.hero .highlight {
  color: var(--primary);
}

.hero p {
  font-size: 18px;
  margin-bottom: 30px;
  color: #ccc;
}

.cta-group {
  display: flex;
  gap: 15px;
  justify-content: center;
  flex-wrap: wrap;
}

section {
  padding: 80px 0;
}

section h2 {
  font-size: 36px;
  margin-bottom: 50px;
  text-align: center;
  font-weight: 700;
}

.section-subtitle {
  text-align: center;
  color: var(--text-light);
  margin-bottom: 30px;
  font-size: 16px;
}

.grid {
  display: grid;
  gap: 30px;
  margin-bottom: 40px;
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
}

.card {
  background-color: var(--light);
  border-radius: 8px;
  overflow: hidden;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  border: 1px solid var(--border);
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.card-image {
  width: 100%;
  height: 250px;
  object-fit: cover;
  display: block;
}

.card-content {
  padding: 25px;
}

.card h3 {
  font-size: 20px;
  margin-bottom: 12px;
  color: var(--dark);
}

.card p {
  color: var(--text-light);
  font-size: 14px;
  line-height: 1.6;
}

.bmi-calculator {
  background-color: var(--light);
  border-radius: 8px;
  padding: 40px;
  max-width: 500px;
  margin: 0 auto;
}

.bmi-calculator h3 {
  margin-bottom: 25px;
  font-size: 24px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  margin-bottom: 8px;
  font-weight: 600;
  font-size: 14px;
}

.form-group input {
  width: 100%;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: 4px;
  font-size: 14px;
  font-family: inherit;
}

.bmi-result {
  margin-top: 20px;
  padding: 20px;
  background-color: var(--white);
  border-radius: 4px;
  text-align: center;
  display: none;
}

.bmi-result.show {
  display: block;
}

.bmi-result h4 {
  font-size: 18px;
  margin-bottom: 10px;
}

.bmi-value {
  font-size: 32px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 10px;
}

.testimonial {
  text-align: center;
}

.testimonial-image {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  object-fit: cover;
  margin: 0 auto 20px;
  display: block;
}

.testimonial h4 {
  margin-bottom: 5px;
  font-size: 16px;
}

.testimonial .role {
  color: var(--primary);
  font-size: 13px;
  margin-bottom: 15px;
}

.testimonial p {
  color: var(--text-light);
  font-style: italic;
  line-height: 1.8;
}

.form-container {
  background-color: var(--light);
  border-radius: 8px;
  padding: 40px;
  max-width: 600px;
  margin: 0 auto;
}

.form-container h3 {
  margin-bottom: 30px;
  font-size: 24px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.form-row.full {
  grid-template-columns: 1fr;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: 4px;
  font-size: 14px;
  font-family: inherit;
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.checkbox-group {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 20px 0;
}

.checkbox-group input[type="checkbox"] {
  width: 18px;
  height: 18px;
  cursor: pointer;
}

.checkbox-group label {
  margin: 0;
  cursor: pointer;
  font-size: 13px;
}

.checkbox-group a {
  color: var(--primary);
}

footer {
  background-color: var(--dark);
  color: var(--white);
  padding: 50px 0 20px;
  margin-top: 60px;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 40px;
  margin-bottom: 40px;
}

.footer-section h4 {
  margin-bottom: 20px;
  font-size: 16px;
  color: var(--primary);
}

.footer-section ul {
  list-style: none;
}

.footer-section ul li {
  margin-bottom: 10px;
}

.footer-section a {
  color: #ccc;
  font-size: 14px;
  transition: color 0.3s ease;
}

.footer-section a:hover {
  color: var(--primary);
}

.footer-bottom {
  border-top: 1px solid #444;
  padding-top: 20px;
  text-align: center;
  font-size: 13px;
  color: #999;
}

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

.info-block {
  background-color: var(--light);
  padding: 30px;
  border-radius: 8px;
  border: 1px solid var(--border);
}

.info-block h4 {
  margin-bottom: 15px;
  font-size: 16px;
  color: var(--primary);
}

.info-block p {
  color: var(--text-light);
  font-size: 14px;
  line-height: 1.8;
}

.success-message {
  background-color: #d4edda;
  border: 1px solid #c3e6cb;
  color: #155724;
  padding: 20px;
  border-radius: 4px;
  margin-bottom: 30px;
  text-align: center;
}

.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
  margin-bottom: 40px;
}

.feature {
  padding: 20px;
  background-color: var(--light);
  border-radius: 8px;
  border-left: 4px solid var(--primary);
  text-align: center;
}

.feature h4 {
  margin-bottom: 10px;
  font-size: 16px;
}

.feature p {
  font-size: 13px;
  color: var(--text-light);
}

.policy-content {
  max-width: 800px;
  margin: 0 auto;
  color: var(--text-light);
  line-height: 1.8;
}

.policy-content h3 {
  margin-top: 30px;
  margin-bottom: 15px;
  color: var(--dark);
  font-size: 18px;
}

.policy-content h4 {
  margin-top: 20px;
  margin-bottom: 10px;
  color: var(--dark);
  font-size: 16px;
}

.policy-content ul {
  margin-left: 20px;
  margin-bottom: 15px;
}

.policy-content li {
  margin-bottom: 8px;
}

.policy-content p {
  margin-bottom: 15px;
}

.last-updated {
  color: var(--text-light);
  font-style: italic;
  font-size: 13px;
  margin-bottom: 30px;
}

@media (max-width: 768px) {
  nav ul {
    gap: 15px;
  }

  nav a {
    font-size: 13px;
  }

  .hero h1 {
    font-size: 32px;
  }

  .hero p {
    font-size: 16px;
  }

  section h2 {
    font-size: 28px;
  }

  .cta-group {
    flex-direction: column;
    align-items: center;
  }

  .cta-group .btn {
    width: 100%;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .footer-content {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .navbar {
    flex-direction: column;
    gap: 15px;
  }

  nav ul {
    flex-direction: column;
    gap: 10px;
    width: 100%;
  }

  nav a {
    display: block;
  }

  .hero {
    padding: 50px 0;
  }

  .hero h1 {
    font-size: 24px;
  }

  section {
    padding: 50px 0;
  }

  section h2 {
    font-size: 22px;
  }
}