* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Segoe UI", -apple-system, BlinkMacSystemFont, sans-serif;
}

body {
  background: linear-gradient(to bottom, #ffffff, #f0f0f0);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  padding: 20px;
  color: #333;
  transition: background 0.3s ease;
}

body.dark-theme {
  background: linear-gradient(to bottom, #2c2c2c, #1a1a1a);
  color: #f0f0f0;
}

.header {
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-radius: 15px;
  padding: 20px 40px;
  margin-bottom: 30px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
  border-bottom: 2px solid #000;
}
.header-icon {
  font-size: 2.5rem;
  margin-bottom: 15px;
  color: #000000;
}

.dark-theme .header-icon {
  color: #ffffff;
}

.dark-theme .header {
  background: rgba(40, 40, 40, 0.9);
  border-bottom: 2px solid #fff;
}

.header h1 {
  font-size: 2.2rem;
  font-weight: 600;
  text-align: center;
  flex-grow: 1;
}

.theme-toggle {
  background: #333;
  color: white;
  border: none;
  border-radius: 50%;
  width: 50px;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 1.5rem;
  transition: all 0.3s ease;
  border-bottom: 2px solid #000;
}

.dark-theme .theme-toggle {
  background: #f0f0f0;
  color: #333;
  border-bottom: 2px solid #fff;
}

.main-content {
  display: flex;
  gap: 30px;
  flex-grow: 1;
}

.info-section {
  flex: 7;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-radius: 15px;
  padding: 30px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
  border-bottom: 2px solid #000;
}

.dark-theme .info-section {
  background: rgba(40, 40, 40, 0.9);
  border-bottom: 2px solid #fff;
}

.info-section h2 {
  font-size: 1.8rem;
  margin-bottom: 20px;
  padding-bottom: 10px;
  border-bottom: 1px solid #ddd;
}

.dark-theme .info-section h2 {
  border-bottom: 1px solid #555;
}

.info-section p {
  margin-bottom: 15px;
  line-height: 1.6;
}

.buttons-section {
  flex: 3;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.card {
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-radius: 15px;
  padding: 25px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  cursor: pointer;
  border-bottom: 2px solid #000;
}

.dark-theme .card {
  background: rgba(40, 40, 40, 0.9);
  border-bottom: 2px solid #fff;
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.card-icon {
  font-size: 2.5rem;
  margin-bottom: 15px;
  color: #4a6cf7;
}

.dark-theme .card-icon {
  color: #6d8cff;
}

.card h2 {
  font-size: 1.5rem;
  font-weight: 500;
  margin-bottom: 10px;
}

.card p {
  font-size: 0.9rem;
  opacity: 0.8;
  line-height: 1.5;
}

.footer {
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-radius: 15px;
  padding: 30px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
  border-bottom: 2px solid #000;
}

.dark-theme .footer {
  background: rgba(40, 40, 40, 0.9);
  border-bottom: 2px solid #fff;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 30px;
}

.footer-section {
  flex: 1;
  min-width: 200px;
}

.footer-section h3 {
  font-size: 1.3rem;
  margin-bottom: 15px;
  padding-bottom: 8px;
  border-bottom: 1px solid #ddd;
}

.dark-theme .footer-section h3 {
  border-bottom: 1px solid #555;
}

.footer-section p,
.footer-section a {
  margin-bottom: 10px;
  display: block;
  color: inherit;
  text-decoration: none;
  transition: color 0.3s ease;
}

.footer-section a:hover {
  color: #4a6cf7;
}

.dark-theme .footer-section a:hover {
  color: #6d8cff;
}

.social-links {
  display: flex;
  gap: 15px;
  margin-top: 15px;
}

.social-links a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: #4a6cf7;
  color: white;
  border-radius: 50%;
  transition: all 0.3s ease;
}

.dark-theme .social-links a {
  background: #6d8cff;
}

.social-links a:hover {
  transform: translateY(-3px);
  background: #3a5bd9;
}

.dark-theme .social-links a:hover {
  background: #5a7ce6;
}

.footer-bottom {
  margin-top: 30px;
  padding-top: 20px;
  border-top: 1px solid #ddd;
  text-align: center;
  font-size: 0.9rem;
  opacity: 0.8;
}

@media (max-width: 768px) {
  .main-content {
    flex-direction: column;
  }

  .header h1 {
    font-size: 1.8rem;
  }

  .header {
    padding: 15px 20px;
  }
}