:root {
  /* Serene Trust Palette */
  --primary: #0F172A;
  /* Deep Ocean: Trust, Authority */
  --secondary: #3B8C6E;
  /* Sage Green: Growth, Health */
  --accent: #F59E0B;
  /* Sunray Gold: Optimism, Action */
  --neutral: #64748B;
  /* Soft Slate: Balance */
  --bg-body: #F8FAFC;
  /* Mist Gray: Surface */
  --bg-card: #FFFFFF;
  /* Clean White */
  --text-main: #334155;
  --text-light: #64748B;

  /* Modern Spacing & Tyopgraphy */
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-full: 50px;
  --font-main: 'Inter', sans-serif;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.1);
  --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.1);
}

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

body {
  font-family: var(--font-main);
  background-color: var(--bg-body);
  color: var(--text-main);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3,
h4 {
  color: var(--primary);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.025em;
}

a {
  text-decoration: none;
  color: inherit;
  transition: var(--transition);
}

img {
  max-width: 100%;
  display: block;
}

/* Utilities */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.875rem 2rem;
  border-radius: var(--radius-full);
  font-weight: 600;
  cursor: pointer;
  border: 2px solid transparent;
  font-size: 1rem;
  background-color: var(--accent);
  color: var(--primary);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  filter: brightness(110%);
}

.btn-outline {
  background-color: transparent;
  border: 2px solid var(--bg-card);
  color: var(--bg-card);
}

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

/* Header - Minimalist */
header {
  background-color: var(--bg-card);
  border-bottom: 1px solid #e2e8f0;
  padding: 1.25rem 0;
  position: sticky;
  top: 0;
  z-index: 1000;
}

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

.logo {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--primary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

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

.nav-links {
  display: flex;
  gap: 2.5rem;
}

.nav-links a {
  color: var(--text-main);
  font-weight: 500;
  font-size: 0.95rem;
}

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

/* Hero Section */
.hero {
  background: linear-gradient(135deg, rgba(15, 23, 42, 0.95), rgba(59, 140, 110, 0.8)), url('https://source.unsplash.com/random/1920x1080?care,hands') no-repeat center center/cover;
  padding: 8rem 0 6rem;
  color: white;
  text-align: center;
}

.hero-content {
  max-width: 800px;
  margin: 0 auto;
}

.hero h1 {
  font-size: 3.5rem;
  /* Large impact */
  margin-bottom: 1.5rem;
  color: white;
  line-height: 1.1;
}

.hero p {
  font-size: 1.25rem;
  margin-bottom: 2.5rem;
  opacity: 0.95;
  color: #e2e8f0;
}

.hero-btns {
  display: flex;
  gap: 1rem;
  justify-content: center;
}

/* Sections */
.section {
  padding: 5rem 0;
}

.section-title {
  text-align: center;
  margin-bottom: 4rem;
}

.section-title h2 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.section-title p {
  color: var(--text-light);
  font-size: 1.1rem;
}

/* Cards (Grid) */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  /* More breathing room */
  align-items: center;
}

.card {
  background: var(--bg-card);
  padding: 2.5rem;
  border-radius: var(--radius-md);
  border: 1px solid #f1f5f9;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

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

.card-icon {
  font-size: 2rem;
  margin-bottom: 1.5rem;
  display: inline-block;
  padding: 1rem;
  background: #f0fdf4;
  border-radius: 12px;
}

/* Feature Highlight (501c3) */
.highlight-box {
  background: linear-gradient(135deg, var(--primary), #1e293b);
  color: white;
  padding: 3rem;
  border-radius: var(--radius-md);
}

.highlight-box h3 {
  color: var(--accent);
}

/* Footer */
footer {
  background-color: var(--primary);
  color: #94a3b8;
  padding: 4rem 0 2rem;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-content h4 {
  color: white;
  margin-bottom: 1.5rem;
}

.footer-bottom {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 0.875rem;
}

/* Mobile */
@media (max-width: 768px) {
  .hero h1 {
    font-size: 2.5rem;
  }

  .grid-2,
  .grid-3 {
    grid-template-columns: 1fr;
  }

  .nav-links {
    display: none;
  }

  /* Hamburger logic remains in JS */
  .hamburger {
    display: block;
    cursor: pointer;
  }

  .hamburger .bar {
    background-color: var(--primary);
    /* Dark bars on light header */
  }
}