:root {
  --primary: #2563eb;
  --primary-dark: #1e40af;
  --background: #ffffff;
  --text: #1f2937;
  --border: #e5e7eb;
  --card-bg: #f9fafb;
  --accent: #10b981;
}

.dark-theme {
  --primary: #3b82f6;
  --primary-dark: #1e40af;
  --background: #111827;
  --text: #f3f4f6;
  --border: #374151;
  --card-bg: #1f2937;
  --accent: #34d399;
}

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

body {
  font-family: 'Inter', -apple-system, sans-serif;
  background: var(--background);
  color: var(--text);
  line-height: 1.6;
  transition: all 0.3s ease;
}

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

.header {
  background: var(--card-bg);
  border-bottom: 1px solid var(--border);
  padding: 20px 0;
  position: sticky;
  top: 0;
  z-index: 100;
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo-img {
  height: 2rem;
  width: auto;
}

.logo h1 {
  font-size: 1.8rem;
  color: var(--primary);
}

.nav {
  display: flex;
  align-items: center;
  gap: 20px;
}

.nav a {
  color: var(--text);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.3s;
}

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

.nav a.active {
  color: var(--primary);
  border-bottom: 2px solid var(--primary);
}

.theme-btn {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 16px;
  font-size: 1rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text);
  transition: all 0.3s;
}

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

/* Hero Section */
.hero {
  padding: 80px 0;
  text-align: center;
}

.rotating-title {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 15px;
  margin-bottom: 30px;
}

.service-logo {
  height: 50px;
  width: auto;
  transition: opacity 0.3s ease;
}

.hero h2 {
  font-size: 2.8rem;
  color: var(--primary);
  display: flex;
  align-items: center;
  gap: 10px;
}

.service-name {
  transition: opacity 0.3s ease;
}

.static-text {
  color: var(--text);
}

.hero p {
  max-width: 700px;
  margin: 0 auto;
  font-size: 1.2rem;
  opacity: 0.9;
  line-height: 1.7;
}

/* Mission Section */
.mission {
  padding: 60px 0;
  text-align: center;
}

.mission h3 {
  font-size: 2rem;
  color: var(--primary);
  margin-bottom: 20px;
}

.mission p {
  max-width: 700px;
  margin: 0 auto;
  font-size: 1.1rem;
  opacity: 0.9;
  line-height: 1.7;
}

/* Values Section */
.values {
  padding: 60px 0;
  text-align: center;
}

.values h3 {
  font-size: 2rem;
  color: var(--primary);
  margin-bottom: 30px;
}

.values-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 25px;
  max-width: 1000px;
  margin: 0 auto;
}

.value-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 25px;
  transition: all 0.3s ease;
}

.value-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.value-icon {
  height: 50px;
  width: auto;
  margin-bottom: 15px;
}

.value-card h4 {
  font-size: 1.3rem;
  margin-bottom: 12px;
  color: var(--primary);
}

.value-card p {
  font-size: 1rem;
  opacity: 0.9;
  line-height: 1.6;
}

/* Footer */
.footer {
  background: var(--card-bg);
  border-top: 1px solid var(--border);
  padding: 30px 0;
  margin-top: 60px;
}

.footer .container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 15px;
}

.footer p {
  opacity: 0.8;
}

.footer-links {
  display: flex;
  gap: 20px;
}

.footer-links a {
  color: var(--primary);
  text-decoration: none;
  font-weight: 500;
  transition: opacity 0.3s;
}

.footer-links a:hover {
  opacity: 0.8;
  text-decoration: underline;
}

/* Responsive Adjustments */
@media (max-width: 768px) {
  .header .container {
    flex-direction: column;
    gap: 20px;
  }
  
  .nav {
    flex-wrap: wrap;
    justify-content: center;
  }
  
  .hero h2 {
    font-size: 2.2rem;
    flex-direction: column;
  }
  
  .rotating-title {
    flex-direction: column;
    gap: 10px;
  }
  
  .values-grid {
    grid-template-columns: 1fr;
    max-width: 500px;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 15px;
  }
  
  .hero h2 {
    font-size: 1.8rem;
  }
  
  .hero p,
  .mission p {
    font-size: 1rem;
  }
  
  .value-card {
    padding: 20px;
  }
  
  .footer {
    padding: 25px 0;
    margin-top: 40px;
  }
}
/* Donate Page Styles */
.donate-hero {
  text-align: center;
  padding: 60px 0 40px;
}

.donate-hero h2 {
  font-size: 2.5rem;
  color: var(--primary);
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 15px;
}

.donate-hero h2 i {
  color: #ff4757;
}

.donate-hero p {
  max-width: 700px;
  margin: 0 auto;
  font-size: 1.2rem;
  opacity: 0.9;
  line-height: 1.7;
}

.donate-options {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 30px;
  max-width: 1000px;
  margin: 0 auto;
  padding: 40px 0 80px;
}

.donate-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 30px;
  text-align: center;
  transition: all 0.3s ease;
}

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

.donate-icon {
  font-size: 2.5rem;
  color: var(--primary);
  margin-bottom: 20px;
}

.donate-card h3 {
  font-size: 1.5rem;
  margin-bottom: 15px;
  color: var(--primary);
}

.donate-card p {
  margin-bottom: 25px;
  line-height: 1.6;
}

.crypto-address {
  font-family: monospace;
  font-size: 1rem;
  word-break: break-all;
  background: rgba(0, 0, 0, 0.05);
  padding: 12px;
  border-radius: 8px;
  margin-bottom: 25px;
}

.dark-theme .crypto-address {
  background: rgba(255, 255, 255, 0.1);
}

.qr-code {
  max-width: 200px;
  width: 100%;
  height: auto;
  margin: 20px auto;
  display: block;
  border: 1px solid var(--border);
  border-radius: 8px;
}

.donate-actions {
  display: flex;
  gap: 15px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  padding: 12px 20px;
  border-radius: 8px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: none;
}

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

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

.secondary-btn {
  background: var(--card-bg);
  border: 1px solid var(--border);
  color: var(--text);
}

.secondary-btn:hover {
  background: var(--border);
}

@media (max-width: 768px) {
  .donate-options {
    grid-template-columns: 1fr;
  }
  
  .donate-hero h2 {
    font-size: 2rem;
  }
}

@media (max-width: 480px) {
  .donate-card {
    padding: 25px 20px;
  }
  
  .donate-actions {
    flex-direction: column;
  }
  
  .btn {
    width: 100%;
    justify-content: center;
  }
}