:root {
  --primary: #2563eb;
  --secondary: #0ea5e9;
  --accent: #8b5cf6;
  --dark: #0f172a;
  --light: #f8fafc;
}

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

body {
  font-family: "Inter", sans-serif;
  color: var(--dark);
  line-height: 1.7;
}

.navbar {
  background: rgba(255, 255, 255, 0.95) !important;
  backdrop-filter: blur(10px);
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
}

.page-header {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  padding: 150px 0 80px 0;
  color: white;
  position: relative;
  overflow: hidden;
}

.page-header::before {
  content: "";
  position: absolute;
  width: 150%;
  height: 150%;
  background: radial-gradient(
    circle,
    rgba(255, 255, 255, 0.1) 1px,
    transparent 1px
  );
  background-size: 50px 50px;
  animation: moveGrid 20s linear infinite;
}

@keyframes moveGrid {
  0% {
    transform: translate(0, 0);
  }
  100% {
    transform: translate(50px, 50px);
  }
}

.page-header-content {
  position: relative;
  z-index: 2;
}

.content-card {
  background: white;
  border-radius: 20px;
  padding: 50px;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
  margin-top: -50px;
  position: relative;
  z-index: 3;
}

.section-title {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 20px;
  color: var(--dark);
}

.subsection-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-top: 30px;
  margin-bottom: 15px;
  color: var(--primary);
}

.toc {
  background: #f8fafc;
  border-radius: 15px;
  padding: 30px;
  margin-bottom: 40px;
  border-left: 4px solid var(--primary);
}

.toc-title {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 15px;
  color: var(--dark);
}

.toc ul {
  list-style: none;
  padding: 0;
}

.toc li {
  margin-bottom: 10px;
}

.toc a {
  color: var(--primary);
  text-decoration: none;
  transition: all 0.3s;
}

.toc a:hover {
  color: var(--secondary);
  padding-left: 10px;
}

.highlight-box {
  background: linear-gradient(
    135deg,
    rgba(37, 99, 235, 0.1),
    rgba(139, 92, 246, 0.1)
  );
  border-left: 4px solid var(--primary);
  border-radius: 10px;
  padding: 20px;
  margin: 20px 0;
}

.highlight-box h6 {
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 10px;
}

.last-updated {
  background: #fff3cd;
  border: 1px solid #ffc107;
  border-radius: 10px;
  padding: 15px;
  margin-bottom: 30px;
  text-align: center;
}

.contact-section {
  background: #f8fafc;
  border-radius: 15px;
  padding: 30px;
  margin-top: 40px;
}

ul,
ol {
  margin-left: 20px;
  margin-bottom: 20px;
}

li {
  margin-bottom: 8px;
}

p {
  margin-bottom: 15px;
}

strong {
  color: var(--dark);
  font-weight: 600;
}