/* ===================================================================
   Root Variables & Global Styles
   =================================================================== */
:root {
  --bg: #0b1220;
  --panel: #0f1724;
  --muted: #96a0ad;
  --accent: #ff8a4b;
  --code-bg: #071226;
  --radius: 12px;
  font-family: Inter, system-ui, -apple-system, sans-serif;
  color-scheme: dark;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: #e6eef6;
  -webkit-font-smoothing: antialiased;
}

/* ===================================================================
   Main Layout & Structure
   =================================================================== */
.wrap {
  max-width: 800px;
  margin: 36px auto;
  padding: 18px;
}

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: flex-end;
}

main {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
}

section {
  scroll-margin-top: 100px;
}

.panel {
  background: var(--panel);
  border-radius: var(--radius);
  padding: 28px;
  border: 1px solid rgba(255, 255, 255, 0.03);
}

/* ===================================================================
   Typography & Content Elements
   =================================================================== */
.logo {
  width: 46px;
  height: 46px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--accent), #ff6a6a);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: #081020;
}

h1 {
  font-size: 18px;
  margin: 0;
}

.tag {
  color: var(--muted);
  font-size: 13px;
}

.part-title {
  font-size: 20px;
  color: #ffffff;
  font-weight: 700;
  margin: 0 0 24px 0;
  padding-bottom: 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
}

.panel h2 {
  margin: 0 0 8px;
  font-size: 16px;
  color: #fff;
}

.panel h3 {
  font-size: 15px;
  color: #fff;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  padding-bottom: 8px;
  margin: 24px 0 12px 0;
}

.muted {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.6;
  margin: 0 0 16px 0;
}

nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 14px;
  transition: color 0.2s ease;
}

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

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

/* ===================================================================
   Lists (Unordered, Ordered, Definition)
   =================================================================== */
ul,
ol {
  padding-left: 18px;
  margin: 16px 0 0 0;
}

ul li,
ol li {
  margin-bottom: 8px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.6;
}

dl {
  margin: 16px 0 0 0;
}

dt {
  font-weight: 600;
  color: #fff;
  font-size: 13px;
  margin-bottom: 6px;
}

dd {
  margin: 0 0 14px 0;
  color: var(--muted);
  font-size: 13px;
  padding-left: 14px;
  border-left: 2px solid rgba(255, 255, 255, 0.05);
}

/* ===================================================================
   Code Blocks & Syntax Highlighting
   =================================================================== */
code {
  color: var(--accent);
  font-family: "Courier New", Courier, monospace;
  background-color: rgba(255, 138, 75, 0.1);
  padding: 2px 5px;
  border-radius: 4px;
  font-size: 0.9em;
}

pre {
  background: var(--code-bg);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: var(--radius);
  padding: 20px;
  overflow-x: auto;
  font-size: 13px;
  line-height: 1.7;
  margin-top: 16px;
  white-space: pre-wrap;
  word-break: break-all;
}

pre code {
  font-family: "Courier New", Courier, monospace;
  color: #cdd9e5;
  background: none;
  padding: 0;
  border-radius: 0;
  font-size: 1em;
}

.code-comment {
  color: #8b949e;
  font-style: italic;
}
.code-keyword {
  color: #ff7b72;
}
.code-function {
  color: #d2a8ff;
}
.code-string {
  color: #a5d6ff;
}
.code-variable {
  color: #ffa657;
}
.code-number {
  color: #79c0ff;
}
.code-operator {
  color: #79c0ff;
}

/* ===================================================================
   Page-Specific Components & Utilities
   =================================================================== */

/* For the main index page links */
.note-link {
  display: block;
  padding: 16px 20px;
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: var(--radius);
  text-decoration: none;
  margin-bottom: 12px;
  transition: background-color 0.2s ease, border-color 0.2s ease;
}

.note-link:hover {
  background-color: rgba(255, 255, 255, 0.03);
  border-color: rgba(255, 255, 255, 0.1);
}

.note-link strong {
  display: block;
  font-size: 15px;
  color: #e6eef6;
  margin-bottom: 4px;
}

.note-link span {
  font-size: 13px;
  color: var(--muted);
}

/* For the database security examples */
.secure {
  color: #50fa7b;
}

.insecure {
  color: #ff5555;
}