/**
 * Main Global Styles
 * Battlefield REDSEC Guide Website
 * 
 * Includes: Reset, Base styles, Typography, Utilities
 */

/* Import Design Tokens */
@import url('variables.css');

/* ============================================
   CSS RESET & NORMALIZE
   ============================================ */

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

html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  padding: 0;
  min-height: 100vh;
  font-family: var(--font-primary);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--color-text-primary);
  background-color: var(--color-dark);
  overflow-x: hidden;
}

/* Reset lists */
ul,
ol {
  list-style: none;
}

/* Reset links */
a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition-colors);
}

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

/* Reset buttons */
button {
  font-family: inherit;
  font-size: inherit;
  line-height: inherit;
  cursor: pointer;
  border: none;
  background: none;
  padding: 0;
}

/* Reset images */
img,
picture,
video,
canvas,
svg {
  display: block;
  max-width: 100%;
  height: auto;
}

/* Reset form elements */
input,
button,
textarea,
select {
  font: inherit;
  color: inherit;
}

/* ============================================
   TYPOGRAPHY
   ============================================ */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: var(--font-bold);
  line-height: var(--leading-tight);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-4);
}

h1 {
  font-size: var(--text-5xl);
  letter-spacing: -0.02em;
}

h2 {
  font-size: var(--text-4xl);
  letter-spacing: -0.01em;
}

h3 {
  font-size: var(--text-3xl);
}

h4 {
  font-size: var(--text-2xl);
}

h5 {
  font-size: var(--text-xl);
}

h6 {
  font-size: var(--text-lg);
}

p {
  margin-bottom: var(--spacing-4);
  line-height: var(--leading-relaxed);
}

strong {
  font-weight: var(--font-bold);
  color: var(--color-primary-light);
}

em {
  font-style: italic;
}

/* Links in content */
.content a,
article a {
  color: var(--color-secondary);
  text-decoration: underline;
  text-decoration-color: rgba(0, 212, 255, 0.3);
  text-underline-offset: 3px;
  transition: var(--transition-colors);
}

.content a:hover,
article a:hover {
  color: var(--color-secondary-light);
  text-decoration-color: var(--color-secondary);
}

/* Code */
code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background-color: var(--color-dark-surface);
  padding: 0.2em 0.4em;
  border-radius: var(--radius-sm);
  color: var(--color-secondary-light);
}

pre {
  background-color: var(--color-dark-surface);
  padding: var(--spacing-4);
  border-radius: var(--radius-md);
  overflow-x: auto;
  margin-bottom: var(--spacing-4);
}

pre code {
  background: none;
  padding: 0;
}

/* Blockquote */
blockquote {
  border-left: 4px solid var(--color-primary);
  padding-left: var(--spacing-4);
  margin: var(--spacing-4) 0;
  font-style: italic;
  color: var(--color-text-secondary);
}

/* ============================================
   LAYOUT UTILITIES
   ============================================ */

.container {
  width: 100%;
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--spacing-4);
  padding-right: var(--spacing-4);
}

.container-wide {
  max-width: var(--max-width-wide);
}

.container-full {
  max-width: 100%;
}

/* Section Spacing */
.section {
  padding: var(--spacing-lg) 0;
}

.section-lg {
  padding: var(--spacing-xl) 0;
}

.section-xl {
  padding: var(--spacing-2xl) 0;
}

/* ============================================
   GRID SYSTEMS
   ============================================ */

.grid {
  display: grid;
  gap: var(--spacing-6);
}

.grid-cols-1 {
  grid-template-columns: repeat(1, 1fr);
}

.grid-cols-2 {
  grid-template-columns: repeat(2, 1fr);
}

.grid-cols-3 {
  grid-template-columns: repeat(3, 1fr);
}

.grid-cols-4 {
  grid-template-columns: repeat(4, 1fr);
}

/* Flexbox */
.flex {
  display: flex;
}

.flex-col {
  flex-direction: column;
}

.flex-wrap {
  flex-wrap: wrap;
}

.items-center {
  align-items: center;
}

.items-start {
  align-items: flex-start;
}

.items-end {
  align-items: flex-end;
}

.justify-center {
  justify-content: center;
}

.justify-between {
  justify-content: space-between;
}

.justify-around {
  justify-content: space-around;
}

.gap-2 { gap: var(--spacing-2); }
.gap-4 { gap: var(--spacing-4); }
.gap-6 { gap: var(--spacing-6); }
.gap-8 { gap: var(--spacing-8); }

/* ============================================
   SPACING UTILITIES
   ============================================ */

/* Margin */
.m-0 { margin: 0; }
.m-auto { margin: auto; }
.mt-1 { margin-top: var(--spacing-1); }
.mt-2 { margin-top: var(--spacing-2); }
.mt-3 { margin-top: var(--spacing-3); }
.mt-4 { margin-top: var(--spacing-4); }
.mt-6 { margin-top: var(--spacing-6); }
.mt-8 { margin-top: var(--spacing-8); }
.mb-2 { margin-bottom: var(--spacing-2); }
.mb-3 { margin-bottom: var(--spacing-3); }
.mb-4 { margin-bottom: var(--spacing-4); }
.mb-6 { margin-bottom: var(--spacing-6); }
.mb-8 { margin-bottom: var(--spacing-8); }
.my-4 { margin-top: var(--spacing-4); margin-bottom: var(--spacing-4); }
.my-8 { margin-top: var(--spacing-8); margin-bottom: var(--spacing-8); }
.mx-auto { margin-left: auto; margin-right: auto; }

/* Padding */
.p-0 { padding: 0; }
.p-4 { padding: var(--spacing-4); }
.p-8 { padding: var(--spacing-8); }
.px-4 { padding-left: var(--spacing-4); padding-right: var(--spacing-4); }
.py-4 { padding-top: var(--spacing-4); padding-bottom: var(--spacing-4); }
.py-8 { padding-top: var(--spacing-8); padding-bottom: var(--spacing-8); }

/* ============================================
   TEXT UTILITIES
   ============================================ */

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.text-xs { font-size: var(--text-xs); }
.text-sm { font-size: var(--text-sm); }
.text-base { font-size: var(--text-base); }
.text-lg { font-size: var(--text-lg); }
.text-xl { font-size: var(--text-xl); }
.text-2xl { font-size: var(--text-2xl); }

.font-normal { font-weight: var(--font-normal); }
.font-medium { font-weight: var(--font-medium); }
.font-semibold { font-weight: var(--font-semibold); }
.font-bold { font-weight: var(--font-bold); }

.text-primary { color: var(--color-primary); }
.text-secondary { color: var(--color-secondary); }
.text-muted { color: var(--color-text-muted); }
.text-white { color: var(--color-white); }

.uppercase { text-transform: uppercase; }
.lowercase { text-transform: lowercase; }
.capitalize { text-transform: capitalize; }

/* ============================================
   BACKGROUND UTILITIES
   ============================================ */

.bg-dark { background-color: var(--color-dark); }
.bg-dark-alt { background-color: var(--color-dark-alt); }
.bg-dark-surface { background-color: var(--color-dark-surface); }
.bg-primary { background-color: var(--color-primary); }
.bg-secondary { background-color: var(--color-secondary); }
.bg-white { background-color: var(--color-white); }

.bg-gradient-dark { background: var(--gradient-dark); }
.bg-gradient-primary { background: var(--gradient-primary); }
.bg-gradient-hero { background: var(--gradient-hero); }

/* ============================================
   BORDER UTILITIES
   ============================================ */

.border { border: var(--border-width) solid var(--border-color); }
.border-t { border-top: var(--border-width) solid var(--border-color); }
.border-b { border-bottom: var(--border-width) solid var(--border-color); }
.border-2 { border-width: var(--border-width-2); }
.border-4 { border-width: var(--border-width-4); }

.border-primary { border-color: var(--color-primary); }
.border-secondary { border-color: var(--color-secondary); }

.rounded { border-radius: var(--radius-md); }
.rounded-sm { border-radius: var(--radius-sm); }
.rounded-lg { border-radius: var(--radius-lg); }
.rounded-full { border-radius: var(--radius-full); }

/* ============================================
   DISPLAY UTILITIES
   ============================================ */

.block { display: block; }
.inline-block { display: inline-block; }
.inline { display: inline; }
.hidden { display: none; }

/* ============================================
   VISIBILITY UTILITIES
   ============================================ */

.visible { visibility: visible; }
.invisible { visibility: hidden; }

.opacity-0 { opacity: var(--opacity-0); }
.opacity-50 { opacity: var(--opacity-50); }
.opacity-100 { opacity: var(--opacity-100); }

/* ============================================
   SHADOW UTILITIES
   ============================================ */

.shadow { box-shadow: var(--shadow-md); }
.shadow-sm { box-shadow: var(--shadow-sm); }
.shadow-lg { box-shadow: var(--shadow-lg); }
.shadow-xl { box-shadow: var(--shadow-xl); }
.shadow-none { box-shadow: none; }

/* ============================================
   TRANSITION UTILITIES
   ============================================ */

.transition { transition: var(--transition-all); }
.transition-fast { transition-duration: var(--transition-fast); }
.transition-slow { transition-duration: var(--transition-slow); }

/* ============================================
   HOVER EFFECTS
   ============================================ */

.hover-lift {
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.hover-lift:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.hover-glow-primary:hover {
  box-shadow: var(--glow-primary);
}

.hover-glow-secondary:hover {
  box-shadow: var(--glow-secondary);
}

/* ============================================
   CONTENT SECTIONS
   ============================================ */

.content-section {
  padding: var(--spacing-xl) 0;
}

.content-section:nth-child(even) {
  background-color: var(--color-dark-alt);
}

/* ============================================
   CARDS
   ============================================ */

.card {
  background-color: var(--color-dark-surface);
  border-radius: var(--radius-lg);
  padding: var(--spacing-6);
  border: var(--border-width) solid var(--border-color);
  transition: var(--transition-all);
}

.card:hover {
  border-color: var(--color-primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

/* ============================================
   SCROLLBAR STYLING
   ============================================ */

::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

::-webkit-scrollbar-track {
  background: var(--color-dark);
}

::-webkit-scrollbar-thumb {
  background: var(--color-primary);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-primary-dark);
}

/* Firefox scrollbar */
* {
  scrollbar-width: thin;
  scrollbar-color: var(--color-primary) var(--color-dark);
}

/* ============================================
   SELECTION
   ============================================ */

::selection {
  background-color: var(--color-primary);
  color: var(--color-white);
}

::-moz-selection {
  background-color: var(--color-primary);
  color: var(--color-white);
}

/* ============================================
   FOCUS STYLES
   ============================================ */

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

*:focus:not(:focus-visible) {
  outline: none;
}

/* ============================================
   LOADING STATES
   ============================================ */

.loading {
  pointer-events: none;
  opacity: var(--opacity-50);
  cursor: not-allowed;
}

/* ============================================
   ACCESSIBILITY
   ============================================ */

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* ============================================
   PRINT STYLES
   ============================================ */

@media print {
  body {
    background-color: white;
    color: black;
  }
  
  .no-print,
  .site-header,
  .site-footer,
  .hero-section {
    display: none !important;
  }
}