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

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Inter", "Segoe UI", sans-serif;
  background-color: #eef2f7;
  color: #1f2937;
}

/* Layout */
.layout {
  display: flex;
  min-height: 100vh;
}

/* Sidebar */
.sidebar {
  width: 260px;
  background: linear-gradient(180deg, #0f172a, #1e293b);
  color: white;
  padding: 30px 25px;
  position: fixed;
  height: 100vh;
  overflow-y: auto;
}

.sidebar h2 {
  font-size: 20px;
  margin-bottom: 30px;
  font-weight: 600;
}

.sidebar nav a {
  display: block;
  color: #cbd5e1;
  text-decoration: none;
  margin-bottom: 16px;
  font-size: 14px;
  transition: all 0.2s ease;
}

.sidebar nav a:hover {
  color: #38bdf8;
  padding-left: 5px;
}

/* Main Content */
.content {
  margin-left: 260px;
  width: 100%;
  padding: 50px 60px;
}

/* Header */
.page-header {
  margin-bottom: 40px;
}

.page-header h1 {
  font-size: 34px;
  margin-bottom: 10px;
  font-weight: 700;
}

.page-header p {
  color: #6b7280;
  font-size: 16px;
}

/* Section Cards */
section {
  background: white;
  padding: 40px;
  margin-bottom: 40px;
  border-radius: 14px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
}

section h2 {
  font-size: 22px;
  margin-bottom: 25px;
  border-bottom: 1px solid #e5e7eb;
  padding-bottom: 12px;
}

section h3 {
  font-size: 18px;
  margin-top: 25px;
  margin-bottom: 12px;
  color: #111827;
}

p {
  margin-bottom: 15px;
  line-height: 1.7;
}

ul {
  margin-left: 20px;
  margin-bottom: 15px;
}

li {
  margin-bottom: 6px;
}

/* Highlight Boxes */
.box {
  background: #e0f2fe;
  padding: 20px;
  border-left: 6px solid #0284c7;
  border-radius: 8px;
  margin: 20px 0;
}

.warning {
  background: #fee2e2;
  padding: 20px;
  border-left: 6px solid #dc2626;
  border-radius: 8px;
  margin: 20px 0;
}

/* Code Blocks */
pre {
  background: #0f172a;
  color: #f1f5f9;
  padding: 20px;
  border-radius: 10px;
  margin: 20px 0;
  overflow-x: auto;
  font-size: 14px;
}

/* Responsive */
@media (max-width: 1000px) {
  .sidebar {
    display: none;
  }

  .content {
    margin-left: 0;
    padding: 30px 20px;
  }
}