:root {
  --primary-blue: #2563eb;
  --primary-green: #059669;
  --dark: #1f2937;
  --gray: #6b7280;
  --light-gray: #f3f4f6;
  --white: #ffffff;
  --shadow: 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);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  line-height: 1.6;
  color: var(--dark);
  background: var(--white);
}

a {
  text-decoration: none;
  color: inherit;
  transition: color 0.3s ease;
}

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

header {
  background: var(--white);
  box-shadow: var(--shadow);
  position: fixed;
  width: 100%;
  top: 0;
  z-index: 1000;
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15px 20px;
  max-width: 1200px;
  margin: 0 auto;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary-blue);
}

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

.nav-links {
  display: flex;
  list-style: none;
  gap: 30px;
}

.nav-links a {
  color: var(--dark);
  font-weight: 500;
  transition: color 0.3s ease;
}

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

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

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  position: relative;
  overflow: hidden;
  margin-top: 70px;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.4);
}

.hero-content {
  position: relative;
  z-index: 1;
  color: var(--white);
  max-width: 800px;
  padding: 0 20px;
}

.hero h1 {
  font-size: 3.5rem;
  font-weight: 700;
  margin-bottom: 20px;
  line-height: 1.2;
}

.hero p {
  font-size: 1.25rem;
  margin-bottom: 30px;
  opacity: 0.95;
}

.btn {
  display: inline-block;
  padding: 14px 32px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 1rem;
  transition: all 0.3s ease;
  cursor: pointer;
  border: none;
}

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

.btn-primary:hover {
  background: #047857;
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

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

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

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

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

section {
  padding: 80px 0;
}

.section-title {
  text-align: center;
  margin-bottom: 60px;
}

.section-title h2 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 15px;
  color: var(--dark);
}

.section-title p {
  font-size: 1.1rem;
  color: var(--gray);
  max-width: 600px;
  margin: 0 auto;
}

.stats {
  background: var(--light-gray);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
}

.stat-card {
  text-align: center;
  padding: 30px;
  background: var(--white);
  border-radius: 12px;
  box-shadow: var(--shadow);
  transition: transform 0.3s ease;
}

.stat-card:hover {
  transform: translateY(-5px);
}

.stat-number {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--primary-blue);
  margin-bottom: 10px;
}

.stat-label {
  color: var(--gray);
  font-size: 0.95rem;
}

.programs-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.program-card {
  background: var(--white);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

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

.program-card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.program-content {
  padding: 25px;
}

.program-content h3 {
  font-size: 1.25rem;
  margin-bottom: 10px;
  color: var(--dark);
}

.program-content p {
  color: var(--gray);
  font-size: 0.95rem;
}

.cta {
  background: linear-gradient(135deg, var(--primary-blue) 0%, #1d4ed8 100%);
  color: var(--white);
  text-align: center;
}

.cta h2 {
  font-size: 2.5rem;
  margin-bottom: 20px;
}

.cta p {
  font-size: 1.2rem;
  margin-bottom: 30px;
  opacity: 0.9;
}

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

footer {
  background: var(--dark);
  color: var(--white);
  padding: 60px 0 30px;
}

.footer-content {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand h3 {
  font-size: 1.5rem;
  margin-bottom: 15px;
}

.footer-brand h3 span {
  color: var(--primary-green);
}

.footer-brand p {
  color: #9ca3af;
  font-size: 0.95rem;
  line-height: 1.7;
}

.footer-links h4 {
  font-size: 1.1rem;
  margin-bottom: 20px;
}

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

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

.footer-links a {
  color: #9ca3af;
  transition: color 0.3s ease;
}

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

.footer-bottom {
  text-align: center;
  padding-top: 30px;
  border-top: 1px solid #374151;
  color: #9ca3af;
  font-size: 0.9rem;
}

.page-header {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: var(--white);
  padding: 150px 0 80px;
  text-align: center;
  margin-top: 70px;
}

.page-header h1 {
  font-size: 3rem;
  margin-bottom: 15px;
}

.page-header p {
  font-size: 1.2rem;
  opacity: 0.9;
  max-width: 600px;
  margin: 0 auto;
}

.content-section {
  padding: 80px 0;
}

.content-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.content-grid.reverse {
  direction: rtl;
}

.content-grid.reverse > * {
  direction: ltr;
}

.content-text h2 {
  font-size: 2.2rem;
  margin-bottom: 20px;
  color: var(--dark);
}

.content-text p {
  color: var(--gray);
  margin-bottom: 15px;
  font-size: 1.05rem;
}

.content-image img {
  border-radius: 12px;
  box-shadow: var(--shadow-lg);
}

.team-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.team-card {
  background: var(--white);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow);
  text-align: center;
  padding: 30px;
}

.team-card img {
  width: 150px;
  height: 150px;
  border-radius: 50%;
  object-fit: cover;
  margin: 0 auto 20px;
}

.team-card h3 {
  font-size: 1.2rem;
  margin-bottom: 5px;
}

.team-card .role {
  color: var(--primary-blue);
  font-size: 0.9rem;
  margin-bottom: 15px;
}

.team-card p {
  color: var(--gray);
  font-size: 0.9rem;
}

.form-container {
  max-width: 600px;
  margin: 0 auto;
  background: var(--white);
  padding: 40px;
  border-radius: 12px;
  box-shadow: var(--shadow);
}

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

.form-group label {
  display: block;
  margin-bottom: 8px;
  font-weight: 500;
  color: var(--dark);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px 16px;
  border: 2px solid #e5e7eb;
  border-radius: 8px;
  font-size: 1rem;
  transition: border-color 0.3s ease;
  font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--primary-blue);
}

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

.donation-options {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 15px;
  margin-bottom: 20px;
}

.donation-option {
  padding: 20px;
  border: 2px solid #e5e7eb;
  border-radius: 8px;
  text-align: center;
  cursor: pointer;
  transition: all 0.3s ease;
}

.donation-option:hover {
  border-color: var(--primary-blue);
  background: var(--light-gray);
}

.donation-option.selected {
  border-color: var(--primary-blue);
  background: #eff6ff;
}

.donation-option .amount {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary-blue);
}

.donation-option .description {
  font-size: 0.85rem;
  color: var(--gray);
  margin-top: 5px;
}

.countries-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.country-card {
  background: var(--white);
  padding: 20px;
  border-radius: 8px;
  box-shadow: var(--shadow);
  text-align: center;
  transition: transform 0.3s ease;
}

.country-card:hover {
  transform: translateY(-3px);
}

.country-card h4 {
  color: var(--dark);
  font-size: 1rem;
}

.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.news-card {
  background: var(--white);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform 0.3s ease;
}

.news-card:hover {
  transform: translateY(-5px);
}

.news-card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.news-content {
  padding: 25px;
}

.news-date {
  font-size: 0.85rem;
  color: var(--primary-blue);
  margin-bottom: 10px;
}

.news-content h3 {
  font-size: 1.2rem;
  margin-bottom: 10px;
  color: var(--dark);
}

.news-content p {
  color: var(--gray);
  font-size: 0.95rem;
}

.contact-info {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  margin-bottom: 50px;
}

.contact-card {
  background: var(--white);
  padding: 30px;
  border-radius: 12px;
  box-shadow: var(--shadow);
  text-align: center;
}

.contact-card .icon {
  font-size: 2rem;
  margin-bottom: 15px;
}

.contact-card h4 {
  font-size: 1.1rem;
  margin-bottom: 10px;
  color: var(--dark);
}

.contact-card p {
  color: var(--gray);
}

.contact-card a {
  color: var(--primary-blue);
}

.contact-card a:hover {
  text-decoration: underline;
}

.volunteer-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.step-card {
  text-align: center;
  padding: 30px;
  background: var(--white);
  border-radius: 12px;
  box-shadow: var(--shadow);
}

.step-number {
  width: 50px;
  height: 50px;
  background: var(--primary-blue);
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 700;
  margin: 0 auto 20px;
}

.step-card h3 {
  font-size: 1.2rem;
  margin-bottom: 10px;
  color: var(--dark);
}

.step-card p {
  color: var(--gray);
  font-size: 0.95rem;
}

.impact-list {
  list-style: none;
  margin: 20px 0;
}

.impact-list li {
  padding: 10px 0;
  padding-left: 30px;
  position: relative;
  color: var(--gray);
}

.impact-list li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--primary-green);
  font-weight: bold;
}

@media (max-width: 1024px) {
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .programs-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-content {
    grid-template-columns: repeat(2, 1fr);
  }

  .countries-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--white);
    flex-direction: column;
    padding: 20px;
    gap: 15px;
    box-shadow: var(--shadow);
  }

  .nav-links.active {
    display: flex;
  }

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

  .hero h1 {
    font-size: 2.5rem;
  }

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

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

  .content-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .content-grid.reverse {
    direction: ltr;
  }

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

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

  .donation-options {
    grid-template-columns: 1fr;
  }

  .countries-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .contact-info {
    grid-template-columns: 1fr;
  }

  .volunteer-steps {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: 2rem;
  }

  .section-title h2 {
    font-size: 2rem;
  }

  .page-header h1 {
    font-size: 2.2rem;
  }

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

  .form-container {
    padding: 25px;
  }
}