/* ========================================
   CSS Custom Properties (Theme Variables)
   Shared across all NBRY sites
   ======================================== */

@import url("https://fonts.googleapis.com/css2?family=Roboto+Mono:wght@400;500;600;700&display=swap");

:root {
  /* Colors - Dark IDE Theme */
  --color-bg: #1e1e1e;
  --color-bg-secondary: #252526;
  --color-bg-tertiary: #2d2d30;
  --color-text: #d4d4d4;
  --color-text-secondary: #858585;
  --color-border: #3e3e42;
  --color-accent: #4ec9b0;
  --color-accent-hover: #6dd0d0;
  --color-focus: #007acc;
  --color-link: #4ec9b0;
  --color-link-hover: #6dd0d0;

  /* Syntax Colors */
  --color-syntax-string: #51cf66;
  --color-syntax-keyword: #f97316;
  --color-syntax-function: #fbbf24;
  --color-syntax-tag: #ef4444;
  --color-syntax-attr: #4ec9b0;
  --color-syntax-number: #fbbf24;
  --color-syntax-comment: #6a9955;
  --color-syntax-class: #ef4444;
  --color-syntax-lavender: #c084fc;

  /* Typography */
  --font-family-base: "Roboto Mono", "Courier New", monospace;
  --font-family-mono: "Roboto Mono", "Courier New", monospace;
  --font-size-base: 15px;
  --font-size-sm: 13px;
  --font-size-lg: 17px;
  --font-size-xl: 18px;
  --line-height-base: 1.6;
  --line-height-heading: 1.2;

  /* Spacing (8px base unit) */
  --space-xs: 0.5rem;
  --space-sm: 0.75rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;

  /* Transitions */
  --transition-base: 200ms ease-in-out;
}

/* ========================================
   Reset & Normalize
   ======================================== */

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

html {
  font-size: var(--font-size-base);
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family-base);
  font-size: var(--font-size-base);
  line-height: var(--line-height-base);
  color: var(--color-text);
  background-color: var(--color-bg);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ========================================
   Typography
   ======================================== */

h1,
h2,
h3,
h4,
h5,
h6 {
  line-height: var(--line-height-heading);
  font-weight: 600;
  margin-bottom: var(--space-md);
}

h1 {
  font-size: 2.5rem;
  color: var(--color-accent);
}

h2 {
  font-size: 1.75rem;
  color: var(--color-accent);
  margin-top: var(--space-2xl);
}

h3 {
  font-size: 1.25rem;
  color: var(--color-text);
}

h4 {
  font-size: 1.1rem;
  color: var(--color-text-secondary);
}

p {
  margin-bottom: var(--space-md);
}

a {
  color: var(--color-link);
  text-decoration: none;
  transition: color var(--transition-base);
}

a:hover {
  color: var(--color-link-hover);
}

a:focus {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}

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

code {
  font-family: var(--font-family-mono);
  background-color: var(--color-bg-secondary);
  padding: 0.125rem 0.375rem;
  border-radius: 3px;
  font-size: 0.9em;
}

pre {
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  padding: var(--space-md);
  overflow-x: auto;
  margin: var(--space-md) 0;
  line-height: 1.5;
}

pre code {
  background-color: transparent;
  color: var(--color-text);
  padding: 0;
  font-size: 0.95em;
}

/* ========================================
   Lists
   ======================================== */

ul,
ol {
  margin: var(--space-md) 0;
  padding-left: 2em;
}

li {
  margin-bottom: var(--space-sm);
}

/* ========================================
   Tables
   ======================================== */

table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--space-lg) 0;
  background-color: var(--color-bg-secondary);
}

caption {
  text-align: left;
  margin-bottom: var(--space-md);
  font-weight: 600;
  font-size: var(--font-size-lg);
}

th,
td {
  padding: var(--space-md);
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}

th {
  background-color: var(--color-bg-secondary);
  font-weight: 600;
  border-bottom: 2px solid var(--color-border);
}

tbody tr:nth-child(even) {
  background-color: var(--color-bg);
}

/* ========================================
   Layout
   ======================================== */

main {
  flex: 1;
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: var(--space-xl);
}

section {
  margin-bottom: var(--space-2xl);
}

/* ========================================
   Header & Navigation
   ======================================== */

header {
  background-color: var(--color-bg-secondary);
  border-bottom: 1px solid var(--color-border);
  padding: 0.25rem var(--space-md);
  position: sticky;
  top: 0;
  z-index: 50;
}

.header-container {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  padding: 0 var(--space-md);
}

header h1 {
  margin: 0;
  font-size: 1.75rem;
  flex: 1;
  text-align: center;
  color: var(--color-accent);
}

nav {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-md);
  padding: 0 var(--space-md);
}

nav a {
  color: var(--color-text);
  padding: var(--space-xs) var(--space-md);
  border-radius: 4px;
  font-weight: 500;
  transition:
    background-color var(--transition-base),
    color var(--transition-base);
  display: inline-block;
  vertical-align: middle;
}

nav a:hover {
  background-color: var(--color-bg-tertiary);
  color: var(--color-accent);
  text-decoration: none;
}

nav a:focus {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}

/* ========================================
   Navigation Toggle (Mobile Hamburger)
   ======================================== */

.nav-toggle {
  display: none;
}

.nav-label {
  display: none;
  cursor: pointer;
  padding: var(--space-sm);
  border-radius: 4px;
  transition: background-color var(--transition-base);
  line-height: 0;
}

.nav-label svg {
  color: var(--color-text);
  transition: color var(--transition-base);
}

.nav-label:hover {
  background-color: var(--color-border);
}

.nav-label:hover svg {
  color: var(--color-accent);
}

/* ========================================
   Footer
   ======================================== */

footer {
  background-color: var(--color-bg-secondary);
  border-top: 1px solid var(--color-border);
  padding: var(--space-lg) var(--space-xl);
  text-align: center;
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  margin-top: auto;
}

/* ========================================
   Buttons
   ======================================== */

.btn {
  display: inline-block;
  padding: var(--space-sm) var(--space-lg);
  background-color: var(--color-accent);
  color: var(--color-bg);
  font-weight: 600;
  border-radius: 4px;
  transition: background-color var(--transition-base);
  border: none;
  cursor: pointer;
  font-family: var(--font-family-base);
  font-size: var(--font-size-base);
  text-decoration: none;
}

.btn:hover {
  background-color: var(--color-accent-hover);
  color: var(--color-bg);
}

.btn:focus {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}

/* ========================================
   Responsive Design
   ======================================== */

@media (max-width: 768px) {
  :root {
    --font-size-base: 14px;
  }

  main {
    padding: var(--space-md);
  }

  .nav-label {
    display: block;
  }

  nav {
    display: none;
    flex-direction: column;
    width: 100%;
    padding: var(--space-md);
    gap: 0;
  }

  .nav-toggle:checked ~ nav {
    display: flex;
  }

  nav a {
    width: 100%;
    text-align: left;
    padding: var(--space-md);
    border-bottom: 1px solid var(--color-border);
    border-radius: 0;
  }

  nav a:last-child {
    border-bottom: none;
  }

  h1 {
    font-size: 2rem;
  }

  h2 {
    font-size: 1.5rem;
  }
}