/* ============================================
   PIXEL PALACE ARCADE - Main Stylesheet
   Neon / Retro Arcade Aesthetic
   Mobile-First Responsive Design
   ============================================ */

/* --- CSS Custom Properties (Design Tokens) --- */
:root {
  /* Neon Colors */
  --neon-pink: #ff006e;
  --neon-blue: #00d9ff;
  --neon-purple: #b967ff;
  --neon-green: #05ffa1;
  --neon-yellow: #fffb00;
  --neon-orange: #ff8c42;
  
  /* Background Colors */
  --bg-dark: #0a0e27;
  --bg-darker: #050816;
  --bg-card: rgba(15, 23, 42, 0.8);
  --bg-overlay: rgba(10, 14, 39, 0.95);
  
  /* Text Colors */
  --text-primary: #e6f0ff;
  --text-secondary: #a3c4ff;
  --text-muted: #6b7c9a;
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
  
  /* Typography */
  --font-body: 'Segoe UI', -apple-system, BlinkMacSystemFont, Roboto, sans-serif;
  --font-heading: 'Courier New', 'Courier', monospace;
  
  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  
  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 300ms ease;
  --transition-slow: 500ms ease;
  
  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
  
  /* Neon Glow Effects */
  --glow-pink: 0 0 20px var(--neon-pink), 0 0 40px rgba(255, 0, 110, 0.5);
  --glow-blue: 0 0 20px var(--neon-blue), 0 0 40px rgba(0, 217, 255, 0.5);
  --glow-purple: 0 0 20px var(--neon-purple), 0 0 40px rgba(185, 103, 255, 0.5);
  --glow-green: 0 0 20px var(--neon-green), 0 0 40px rgba(5, 255, 161, 0.5);
}

/* --- CSS Reset & Base Styles --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background: radial-gradient(circle at 20% 20%, var(--bg-dark), var(--bg-darker) 60%);
  background-attachment: fixed;
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

/* Animated background effect */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: 
    repeating-linear-gradient(
      0deg,
      transparent,
      transparent 2px,
      rgba(0, 217, 255, 0.03) 2px,
      rgba(0, 217, 255, 0.03) 4px
    );
  pointer-events: none;
  z-index: 1;
  animation: scanlines 8s linear infinite;
}

@keyframes scanlines {
  0% { transform: translateY(0); }
  100% { transform: translateY(20px); }
}

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  margin-bottom: var(--spacing-md);
  text-shadow: var(--glow-blue);
  color: var(--neon-blue);
}

h2 {
  font-size: clamp(1.5rem, 4vw, 2.5rem);
  margin-bottom: var(--spacing-md);
  text-shadow: var(--glow-pink);
  color: var(--neon-pink);
}

h3 {
  font-size: clamp(1.25rem, 3vw, 1.75rem);
  margin-bottom: var(--spacing-sm);
  color: var(--neon-purple);
  text-shadow: 0 0 10px rgba(185, 103, 255, 0.5);
}

p {
  margin-bottom: var(--spacing-sm);
  color: var(--text-secondary);
}

a {
  color: var(--neon-blue);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover, a:focus {
  color: var(--neon-purple);
  text-shadow: 0 0 10px rgba(185, 103, 255, 0.8);
}

/* --- Layout Containers --- */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
  position: relative;
  z-index: 2;
}

.container-narrow {
  max-width: 800px;
}

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

.section-hero {
  min-height: 80vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--spacing-2xl) 0;
}

/* --- Navigation --- */
.main-nav {
  position: sticky;
  top: 0;
  background: var(--bg-overlay);
  backdrop-filter: blur(10px);
  border-bottom: 2px solid var(--neon-blue);
  box-shadow: var(--shadow-md);
  z-index: 1000;
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-sm) var(--spacing-md);
  max-width: 1200px;
  margin: 0 auto;
}

.nav-logo {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--neon-blue);
  text-shadow: var(--glow-blue);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  transition: transform var(--transition-fast);
}

.nav-logo:hover {
  transform: scale(1.05);
  color: var(--neon-blue);
}

.nav-links {
  display: flex;
  gap: var(--spacing-md);
  list-style: none;
  align-items: center;
}

.nav-links a {
  font-family: var(--font-heading);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: var(--spacing-xs) var(--spacing-sm);
  border: 2px solid transparent;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  position: relative;
}

.nav-links a:hover,
.nav-links a:focus {
  border-color: var(--neon-purple);
  box-shadow: 0 0 10px rgba(185, 103, 255, 0.5);
}

.nav-links a.active {
  border-color: var(--neon-pink);
  color: var(--neon-pink);
  box-shadow: var(--glow-pink);
}

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: 2px solid var(--neon-blue);
  padding: var(--spacing-xs);
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.menu-toggle span {
  display: block;
  width: 25px;
  height: 3px;
  background: var(--neon-blue);
  transition: all var(--transition-fast);
  box-shadow: 0 0 5px var(--neon-blue);
}

.menu-toggle:hover,
.menu-toggle:focus {
  border-color: var(--neon-pink);
  box-shadow: var(--glow-pink);
}

.menu-toggle:hover span {
  background: var(--neon-pink);
  box-shadow: 0 0 10px var(--neon-pink);
}

.menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(8px, 8px);
}

.menu-toggle.active span:nth-child(2) {
  opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -7px);
}

/* Mobile Navigation */
@media (max-width: 768px) {
  .menu-toggle {
    display: flex;
  }

  .nav-links {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    flex-direction: column;
    background: var(--bg-overlay);
    backdrop-filter: blur(10px);
    padding: var(--spacing-lg);
    gap: var(--spacing-md);
    transform: translateX(-100%);
    transition: transform var(--transition-normal);
    border-bottom: 2px solid var(--neon-blue);
    box-shadow: var(--shadow-lg);
  }

  .nav-links.active {
    transform: translateX(0);
  }

  .nav-links a {
    font-size: 1.1rem;
    padding: var(--spacing-sm);
    text-align: center;
  }
}

/* --- Buttons --- */
.btn {
  display: inline-block;
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: var(--spacing-sm) var(--spacing-lg);
  border: 2px solid;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-align: center;
  background: transparent;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: width var(--transition-normal), height var(--transition-normal);
}

.btn:hover::before {
  width: 300px;
  height: 300px;
}

.btn-primary {
  border-color: var(--neon-pink);
  color: var(--neon-pink);
}

.btn-primary:hover,
.btn-primary:focus {
  box-shadow: var(--glow-pink);
  transform: translateY(-2px);
}

.btn-secondary {
  border-color: var(--neon-blue);
  color: var(--neon-blue);
}

.btn-secondary:hover,
.btn-secondary:focus {
  box-shadow: var(--glow-blue);
  transform: translateY(-2px);
}

.btn-success {
  border-color: var(--neon-green);
  color: var(--neon-green);
}

.btn-success:hover,
.btn-success:focus {
  box-shadow: var(--glow-green);
  transform: translateY(-2px);
}

.btn-small {
  font-size: 0.875rem;
  padding: var(--spacing-xs) var(--spacing-md);
}

.btn-large {
  font-size: 1.25rem;
  padding: var(--spacing-md) var(--spacing-xl);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn:disabled:hover {
  transform: none;
  box-shadow: none;
}

/* --- Cards --- */
.card {
  background: var(--bg-card);
  border: 2px solid var(--neon-blue);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-normal);
  backdrop-filter: blur(10px);
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 0 30px rgba(0, 217, 255, 0.3), var(--shadow-lg);
  border-color: var(--neon-purple);
}

.card-header {
  margin-bottom: var(--spacing-md);
  padding-bottom: var(--spacing-sm);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.card-title {
  color: var(--neon-blue);
  text-shadow: 0 0 10px rgba(0, 217, 255, 0.5);
}

.card-body {
  color: var(--text-secondary);
}

/* --- Grid Layouts --- */
.grid {
  display: grid;
  gap: var(--spacing-lg);
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.grid-4 {
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

/* --- Forms --- */
.form-group {
  margin-bottom: var(--spacing-md);
}

.form-label {
  display: block;
  font-family: var(--font-heading);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--neon-blue);
  margin-bottom: var(--spacing-xs);
}

.form-control {
  width: 100%;
  padding: var(--spacing-sm);
  font-family: var(--font-body);
  font-size: 1rem;
  background: rgba(0, 0, 0, 0.5);
  border: 2px solid var(--neon-blue);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  transition: all var(--transition-fast);
}

.form-control:focus {
  outline: none;
  border-color: var(--neon-purple);
  box-shadow: 0 0 15px rgba(185, 103, 255, 0.5);
}

.form-control::placeholder {
  color: var(--text-muted);
}

.form-error {
  display: block;
  margin-top: var(--spacing-xs);
  font-size: 0.875rem;
  color: var(--neon-pink);
}

textarea.form-control {
  resize: vertical;
  min-height: 120px;
}

/* --- Tables --- */
.table-container {
  overflow-x: auto;
  border: 2px solid var(--neon-blue);
  border-radius: var(--radius-md);
  background: var(--bg-card);
}

table {
  width: 100%;
  border-collapse: collapse;
}

th, td {
  padding: var(--spacing-sm);
  text-align: left;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

th {
  font-family: var(--font-heading);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--neon-pink);
  background: rgba(0, 0, 0, 0.3);
}

tr:hover {
  background: rgba(0, 217, 255, 0.05);
}

/* --- Utility Classes --- */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }

.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }

.glow-pink { text-shadow: var(--glow-pink); }
.glow-blue { text-shadow: var(--glow-blue); }
.glow-purple { text-shadow: var(--glow-purple); }
.glow-green { text-shadow: var(--glow-green); }

/* --- Footer --- */
.main-footer {
  margin-top: var(--spacing-2xl);
  padding: var(--spacing-xl) 0;
  border-top: 2px solid var(--neon-blue);
  background: var(--bg-darker);
  text-align: center;
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.footer-text {
  color: var(--text-muted);
  font-size: 0.875rem;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: var(--spacing-lg);
  list-style: none;
  margin-top: var(--spacing-md);
}

/* --- 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: 0;
}

/* Focus Styles */
:focus-visible {
  outline: 2px solid var(--neon-purple);
  outline-offset: 2px;
}

/* --- Animations --- */
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

.animate-pulse {
  animation: pulse 2s ease-in-out infinite;
}

.animate-float {
  animation: float 3s ease-in-out infinite;
}

/* --- Responsive Adjustments --- */
@media (max-width: 768px) {
  :root {
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
  }

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

  .section-hero {
    min-height: 60vh;
    padding: var(--spacing-xl) 0;
  }
}

@media (max-width: 480px) {
  html {
    font-size: 14px;
  }

  .container {
    padding: 0 var(--spacing-sm);
  }
}

/* --- Print Styles --- */
@media print {
  body::before {
    display: none;
  }

  .main-nav,
  .menu-toggle,
  .btn {
    display: none;
  }
}