/* DevoCare Design System */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

:root {
  /* Brand Colors */
  --color-primary: #0056b3; /* Deep Blue from logo */
  --color-accent: #4caf50;  /* Fresh Green from logo */
  --color-dark: #1a1a1a;
  --color-text: #4a4a4a;
  --color-light: #f8f9fa;
  --color-white: #ffffff;
  
  /* Spacing */
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 2rem;
  --spacing-xl: 4rem;
  
  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
  --shadow-lg: 0 10px 15px rgba(0,0,0,0.1);
  
  /* Transitions */
  --transition: all 0.3s ease;
}

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

body {
  font-family: 'Inter', sans-serif;
  color: var(--color-text);
  line-height: 1.6;
  background-color: var(--color-white);
  overflow-x: hidden;
}

a {
  text-decoration: none;
  color: inherit;
}

/* Utilities */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.btn {
  display: inline-block;
  padding: 12px 24px;
  border-radius: 50px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  border: none;
}

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

.btn-primary:hover {
  background-color: #004494;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-secondary {
  background-color: var(--color-white);
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}

.btn-secondary:hover {
  background-color: var(--color-light);
  transform: translateY(-2px);
}

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

.btn-accent:hover {
  background-color: #388e3c;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.section-title {
  font-size: 2.5rem;
  color: var(--color-dark);
  margin-bottom: var(--spacing-sm);
  text-align: center;
}

.section-subtitle {
  text-align: center;
  margin-bottom: var(--spacing-xl);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* Header */
.header {
  background-color: var(--color-white);
  box-shadow: var(--shadow-sm);
  position: fixed;
  width: 100%;
  top: 0;
  z-index: 1000;
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 80px;
}

.logo-container {
  display: flex;
  align-items: center;
}

.logo-img {
  height: 50px;
  width: auto;
}

.nav-links {
  display: flex;
  gap: var(--spacing-lg);
  align-items: center;
}

.nav-link {
  font-weight: 500;
  color: var(--color-dark);
}

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

.mobile-menu-btn {
  display: none;
  font-size: 1.5rem;
  background: none;
  border: none;
  color: var(--color-dark);
  cursor: pointer;
}

/* Hero Section */
.hero {
  padding-top: 140px;
  padding-bottom: 80px;
  background: linear-gradient(135deg, #f0f7ff 0%, #ffffff 100%);
  position: relative;
}

.hero-content {
  display: flex;
  align-items: center;
  gap: var(--spacing-xl);
}

.hero-text {
  flex: 1;
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: var(--spacing-md);
  line-height: 1.2;
}

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

.hero-description {
  font-size: 1.1rem;
  margin-bottom: var(--spacing-lg);
  max-width: 500px;
}

.hero-image {
  flex: 1;
  display: flex;
  justify-content: center;
}

.hero-cta {
  display: flex;
  gap: var(--spacing-md);
}

/* Split Section (Doctors vs Patients) */
.split-section {
  padding: var(--spacing-xl) 0;
}

.split-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-lg);
}

.audience-card {
  border-radius: 20px;
  padding: var(--spacing-xl);
  position: relative;
  overflow: hidden;
  transition: var(--transition);
}

.audience-card h3 {
  font-size: 2rem;
  margin-bottom: var(--spacing-md);
}

.audience-card ul {
  list-style: none;
  margin-bottom: var(--spacing-lg);
}

.audience-card li {
  margin-bottom: var(--spacing-sm);
  display: flex;
  align-items: center;
  gap: 10px;
}

.audience-card li::before {
  content: "✓";
  font-weight: bold;
}

.card-patient {
  background-color: #e3f2fd; /* Light Blue */
  color: var(--color-primary);
}

.card-patient li::before {
  color: var(--color-primary);
}

.card-doctor {
  background-color: #e8f5e9; /* Light Green */
  color: #2e7d32;
}

.card-doctor li::before {
  color: var(--color-accent);
}

/* Features/Services */
.features {
  padding: var(--spacing-xl) 0;
  background-color: var(--color-light);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-lg);
}

.feature-card {
  background: var(--color-white);
  padding: var(--spacing-lg);
  border-radius: 12px;
  box-shadow: var(--shadow-sm);
  text-align: center;
  transition: var(--transition);
}

.feature-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.feature-icon {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-md);
  color: var(--color-primary);
}

/* Footer */
.footer {
  background-color: var(--color-dark);
  color: var(--color-white);
  padding: var(--spacing-xl) 0 var(--spacing-md);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

.footer-col h4 {
  font-size: 1.2rem;
  margin-bottom: var(--spacing-md);
  color: var(--color-white);
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: var(--spacing-sm);
}

.footer-links a {
  color: #ccc;
  transition: var(--transition);
}

.footer-links a:hover {
  color: var(--color-white);
}

.copyright {
  text-align: center;
  padding-top: var(--spacing-md);
  border-top: 1px solid rgba(255,255,255,0.1);
  color: #888;
}

/* Responsive */
@media (max-width: 768px) {
  .nav-links {
    position: absolute;
    top: 80px;
    left: 0;
    width: 100%;
    background-color: var(--color-white);
    flex-direction: column;
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-md);
    transform: translateY(-150%);
    transition: var(--transition);
    z-index: 999;
  }

  .nav-links.active {
    transform: translateY(0);
  }

  .mobile-menu-btn {
    display: block;
  }

  .hero-content {
    flex-direction: column-reverse;
    text-align: center;
  }

  .hero-cta {
    justify-content: center;
  }
  
  .hero-title {
    font-size: 2.5rem;
  }

  .split-grid {
    grid-template-columns: 1fr;
  }
}