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

body {
  font-family: 'Poppins', sans-serif;
  background: url('bgori1.png') center/cover no-repeat, linear-gradient(270deg, #3b82f6, #d69dff, #71a1ff);
  background-blend-mode: overlay;
  animation: gradientShift 20s infinite linear;
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 2rem;
}

@keyframes gradientShift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

.main-container {
  display: flex;
  background: rgba(255,255,255,0.9);
  border-radius: 20px;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
  overflow: hidden;
  max-width: 1000px;
  width: 100%;
}

.tab-nav {
  display: flex;
  flex-direction: column;
  background: #1e40af;
  padding: 1rem;
  border-right: 1px solid #ccc;
  min-width: 140px;
}

.tab-btn {
  background: transparent;
  color: #fff;
  border: none;
  padding: 1rem;
  text-align: left;
  cursor: pointer;
  font-weight: 500;
  border-radius: 8px;
  transition: background 0.2s;
}

.tab-btn:hover,
.tab-btn.active {
  background: #2563eb;
}

.card-container {
  flex: 1;
  padding: 2rem;
  position: relative;
}

.card-content {
  display: none;
  animation: fade 0.4s ease;
}

.card-content.active {
  display: block;
}

@keyframes fade {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

h1, h2 {
  color: #2563eb;
  margin-bottom: 1.5rem;
}

.info-grid {
  display: flex;
  gap: 1.2rem;
  flex-wrap: wrap;
}

.info-grid div {
  background: #f1f5f9;
  padding: 1rem;
  border-radius: 10px;
  flex: 1 1 150px;
  min-width: 150px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.05);
  color: #1e293b;
}

.info-grid strong {
  display: block;
  margin-bottom: 0.5rem;
  color: #2563eb;
  font-size: 1.1rem;
}

.card-content p {
  line-height: 1.7;
  font-size: 1rem;
  color: #374151;
  white-space: pre-line;
}

a.back {
  display: inline-block;
  margin-top: 2rem;
  background: #3b82f6;
  color: #fff;
  font-weight: 600;
  text-decoration: none;
  padding: 0.75rem 1.5rem;
  border-radius: 30px;
  box-shadow: 0 0 15px rgba(59, 130, 246, 0.6);
  transition: all 0.3s ease;
}

a.back:hover {
  background: #2563eb;
  transform: translateY(-2px);
}