/* =========================================================================
   Reset and Root Variables
   ========================================================================= */
:root {
  --primary-color: #0A2540; /* Deep Blue */
  --secondary-color: #2E7D32; /* Soft Green */
  --accent-color: #E8F5E9; /* Light Green Tint */
  --text-dark: #333333;
  --text-light: #555555;
  --white: #ffffff;
  --bg-light: #F9FAFB; /* Earthy/Soft Grayish tone */
  --border-color: #E0E0E0;
  
  --font-main: 'Inter', system-ui, -apple-system, sans-serif;
  --font-heading: 'Outfit', system-ui, -apple-system, sans-serif;
  
  --shadow-sm: 0 2px 4px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -1px rgba(0,0,0,0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -2px rgba(0,0,0,0.05);
  
  --transition: all 0.3s ease;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-main);
  color: var(--text-dark);
  background-color: var(--white);
  line-height: 1.6;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1rem;
  color: var(--primary-color);
}

p {
  margin-bottom: 1rem;
  color: var(--text-light);
}

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

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

ul {
  list-style-type: none;
}

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

/* =========================================================================
   Utility Classes
   ========================================================================= */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.text-center { text-align: center; }
.mt-2 { margin-top: 2rem; }
.mb-2 { margin-bottom: 2rem; }
.py-5 { padding: 5rem 0; }
.bg-light { background-color: var(--bg-light); }
.bg-primary { background-color: var(--primary-color); color: var(--white); }
.bg-primary h2, .bg-primary p { color: var(--white); }

/* Standard Button */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  border-radius: 8px;
  font-family: var(--font-main);
  font-weight: 600;
  text-decoration: none;
  transition: var(--transition);
  cursor: pointer;
  border: none;
}

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

.btn-primary:hover {
  background-color: #0d3660;
  color: var(--white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

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

.btn-secondary:hover {
  background-color: #1b5e20;
  color: var(--white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

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

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

/* =========================================================================
   Header & Navigation
   ========================================================================= */
header {
  position: sticky;
  top: 0;
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  z-index: 1000;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

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

.logo-link {
  display: flex;
  align-items: center;
  gap: 12px;
}

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

.logo-text {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--primary-color);
}

.nav-links {
  display: flex;
  gap: 1.5rem;
  align-items: center;
}

.nav-links a {
  font-weight: 500;
  font-size: 1rem;
}

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

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

/* =========================================================================
   Hero Section
   ========================================================================= */
.hero {
  position: relative;
  min-height: 85vh;
  display: flex;
  align-items: center;
  background-color: var(--primary-color);
  color: var(--white);
  overflow: hidden;
}

/* We handle the hero image as an absolute background via pseudo or absolute img */
.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.4;
  z-index: 1;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(10, 37, 64, 0.9) 0%, rgba(46, 125, 50, 0.6) 100%);
  z-index: 2;
}

.hero-content {
  position: relative;
  z-index: 3;
  max-width: 800px;
  padding: 4rem 20px;
}

.hero-content h1 {
  font-size: 3.5rem;
  color: var(--white);
  margin-bottom: 1.5rem;
}

.hero-content p {
  font-size: 1.25rem;
  color: var(--accent-color);
  margin-bottom: 2.5rem;
}

.hero-btns {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

/* =========================================================================
   Sections (General Grids & Layouts)
   ========================================================================= */
.section-title {
  text-align: center;
  margin-bottom: 3rem;
}

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

.section-title p {
  font-size: 1.1rem;
  max-width: 700px;
  margin: 0 auto;
}

/* Grid Layouts */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 2rem; }

.grid-content {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.grid-image {
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.grid-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.grid-image:hover img {
  transform: scale(1.05);
}

/* =========================================================================
   Cards (Stats, Services, Team)
   ========================================================================= */
.stat-box {
  background: var(--white);
  padding: 2.5rem 1.5rem;
  border-radius: 12px;
  text-align: center;
  box-shadow: var(--shadow-md);
  border-bottom: 4px solid var(--secondary-color);
  transition: var(--transition);
}
.stat-box:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); }
.stat-box h3 { font-size: 2.5rem; color: var(--secondary-color); margin-bottom: 0.5rem; }

.service-card {
  background: var(--white);
  border-radius: 12px;
  padding: 2rem;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  border: 1px solid var(--border-color);
}
.service-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: var(--secondary-color);
}
.service-icon {
  font-size: 2.5rem;
  color: var(--secondary-color);
  margin-bottom: 1rem;
}

.team-card {
  text-align: center;
  background: var(--bg-light);
  border-radius: 12px;
  padding: 2rem;
  transition: var(--transition);
}
.team-card:hover { background: var(--white); box-shadow: var(--shadow-md); }
.team-img {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  margin: 0 auto 1.5rem;
  background-color: var(--border-color);
  object-fit: cover;
}

/* =========================================================================
   Blog Preview / Knowledge Base
   ========================================================================= */
.blog-card {
  background: var(--white);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: var(--transition);
}
.blog-card:hover { transform: translateY(-5px); }
.blog-card-img { height: 200px; background: #ddd; }
.blog-card-img img { width: 100%; height: 100%; object-fit: cover; }
.blog-card-content { padding: 1.5rem; }
.blog-card-content h3 { font-size: 1.25rem; margin-bottom: 0.5rem; }
.blog-meta { font-size: 0.85rem; color: var(--secondary-color); margin-bottom: 1rem; font-weight: 600; }

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

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-col h4 {
  color: var(--white);
  font-size: 1.2rem;
  margin-bottom: 1.5rem;
  position: relative;
  padding-bottom: 0.5rem;
}

.footer-col h4::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 50px;
  height: 2px;
  background-color: var(--secondary-color);
}

.footer-col p, .footer-col a {
  color: #B0BEC5;
  font-size: 0.95rem;
  margin-bottom: 0.8rem;
}

.footer-col a:hover {
  color: var(--secondary-color);
}

.footer-links li {
  margin-bottom: 0.8rem;
}

.social-icons {
  display: flex;
  gap: 1rem;
  margin-top: 1rem;
}
.social-icons a {
  width: 40px; height: 40px;
  border-radius: 50%;
  background: rgba(255,255,255,0.1);
  display: flex; align-items: center; justify-content: center;
}
.social-icons a:hover {
  background: var(--secondary-color);
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.85rem;
  color: #B0BEC5;
}

/* =========================================================================
   Forms (Contact & Donate)
   ========================================================================= */
.form-group {
  margin-bottom: 1.5rem;
}
.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 600;
}
.form-control {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  font-family: inherit;
  font-size: 1rem;
  transition: var(--transition);
}
.form-control:focus {
  outline: none;
  border-color: var(--secondary-color);
  box-shadow: 0 0 0 3px rgba(76, 175, 80, 0.1);
}
textarea.form-control {
  resize: vertical;
  min-height: 120px;
}

/* =========================================================================
   Responsive Design
   ========================================================================= */
@media (max-width: 992px) {
  .hero-content h1 { font-size: 3rem; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .nav-links {
    display: none; /* simple hidden for mobile, can toggle with JS */
    position: absolute;
    top: 80px;
    left: 0;
    width: 100%;
    background: var(--white);
    flex-direction: column;
    padding: 2rem;
    box-shadow: var(--shadow-md);
  }
  .nav-links.active { display: flex; }
  .mobile-menu-btn { display: block; }
  
  .hero-content h1 { font-size: 2.2rem; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  
  .footer-bottom { flex-direction: column; text-align: center; }
}