/* ========================================
   Legend Arena - Elite Performance Science Authority
   Design System & Global Styles
   ======================================== */

:root {
  /* Core Brand Colors */
  --color-asphalt-black: #121212;
  --color-peak-gold: #CBA35C;
  --color-pulse-green: #00FFAB;
  --color-oxygen-white: #F8F9FA;
  --color-dark-gray: #1a1a1a;
  --color-light-gray: #e8e8e8;
  --color-accent-blue: #0099ff;
  
  /* Semantic Colors */
  --bg-primary: var(--color-asphalt-black);
  --bg-secondary: var(--color-dark-gray);
  --text-primary: var(--color-oxygen-white);
  --text-secondary: #b0b0b0;
  --accent-primary: var(--color-peak-gold);
  --accent-secondary: var(--color-pulse-green);
  --accent-tertiary: var(--color-accent-blue);
  
  /* Typography */
  --font-display: 'Bebas Neue', 'Arial Black', sans-serif;
  --font-body: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  --font-mono: 'Courier New', monospace;
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
  
  /* Transitions */
  --transition-fast: 0.2s ease-in-out;
  --transition-normal: 0.3s ease-in-out;
  --transition-slow: 0.5s ease-in-out;
  
  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 255, 171, 0.1);
  --shadow-md: 0 4px 16px rgba(0, 255, 171, 0.15);
  --shadow-lg: 0 8px 32px rgba(0, 255, 171, 0.2);
  --shadow-gold: 0 4px 20px rgba(203, 163, 92, 0.2);
}

/* ========================================
   Base Styles
   ======================================== */

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

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

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: var(--spacing-lg);
}

h1 {
  font-size: clamp(2rem, 5vw, 4rem);
  line-height: 1.1;
}

h2 {
  font-size: clamp(1.5rem, 4vw, 3rem);
  line-height: 1.2;
}

h3 {
  font-size: clamp(1.25rem, 3vw, 2rem);
  line-height: 1.3;
}

h4 {
  font-size: 1.25rem;
}

h5 {
  font-size: 1.1rem;
}

h6 {
  font-size: 1rem;
}

p {
  margin-bottom: var(--spacing-md);
  color: var(--text-secondary);
  line-height: 1.8;
}

a {
  color: var(--accent-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

/* ========================================
   Navigation
   ======================================== */

nav.navbar {
  background-color: rgba(18, 18, 18, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(0, 255, 171, 0.1);
  padding: var(--spacing-md) 0;
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: var(--shadow-sm);
}

.navbar-brand {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent-primary);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.navbar-brand span {
  color: var(--accent-secondary);
}

.nav-link {
  color: var(--text-secondary) !important;
  font-weight: 600;
  text-transform: uppercase;
  font-size: 0.9rem;
  letter-spacing: 0.05em;
  transition: all var(--transition-fast);
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-secondary), var(--accent-primary));
  transition: width var(--transition-fast);
}

.nav-link:hover {
  color: var(--accent-secondary) !important;
}

.nav-link:hover::after {
  width: 100%;
}

.nav-link.active {
  color: var(--accent-secondary) !important;
}

.nav-link.active::after {
  width: 100%;
}

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

.btn {
  font-family: var(--font-display);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: var(--spacing-md) var(--spacing-xl);
  border: 2px solid;
  border-radius: 0;
  transition: all var(--transition-fast);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: rgba(0, 255, 171, 0.2);
  transition: left var(--transition-fast);
  z-index: -1;
}

.btn:hover::before {
  left: 0;
}

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

.btn-primary:hover {
  background-color: transparent;
  color: var(--accent-primary);
  box-shadow: var(--shadow-gold);
}

.btn-secondary {
  background-color: transparent;
  color: var(--accent-secondary);
  border-color: var(--accent-secondary);
}

.btn-secondary:hover {
  background-color: var(--accent-secondary);
  color: var(--bg-primary);
  box-shadow: var(--shadow-md);
}

.btn-outline {
  background-color: transparent;
  color: var(--text-primary);
  border-color: var(--text-primary);
}

.btn-outline:hover {
  background-color: var(--text-primary);
  color: var(--bg-primary);
}

/* ========================================
   Cards & Containers
   ======================================== */

.card {
  background-color: var(--bg-secondary);
  border: 1px solid rgba(0, 255, 171, 0.1);
  border-radius: 4px;
  padding: var(--spacing-xl);
  transition: all var(--transition-normal);
  box-shadow: var(--shadow-sm);
}

.card:hover {
  border-color: rgba(0, 255, 171, 0.3);
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

.card-title {
  color: var(--accent-primary);
  font-size: 1.25rem;
  margin-bottom: var(--spacing-md);
  font-family: var(--font-display);
}

.card-text {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* ========================================
   Hero Section
   ======================================== */

.hero {
  min-height: 100vh;
  background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: 
    linear-gradient(45deg, transparent 30%, rgba(0, 255, 171, 0.05) 50%, transparent 70%),
    repeating-linear-gradient(0deg, rgba(0, 255, 171, 0.03) 0px, transparent 1px, transparent 2px, rgba(0, 255, 171, 0.03) 3px);
  pointer-events: none;
  animation: scanlines 8s linear infinite;
}

@keyframes scanlines {
  0% {
    transform: translateY(0);
  }
  100% {
    transform: translateY(10px);
  }
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 900px;
  padding: var(--spacing-2xl);
}

.hero h1 {
  color: var(--accent-primary);
  margin-bottom: var(--spacing-lg);
  text-shadow: 0 0 20px rgba(0, 255, 171, 0.3);
  animation: fadeInDown 0.8s ease-out;
}

.hero .tagline {
  font-size: 1.5rem;
  color: var(--accent-secondary);
  margin-bottom: var(--spacing-2xl);
  font-style: italic;
  animation: fadeInUp 0.8s ease-out 0.2s both;
}

.hero-cta {
  display: flex;
  gap: var(--spacing-lg);
  justify-content: center;
  flex-wrap: wrap;
  animation: fadeInUp 0.8s ease-out 0.4s both;
}

@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ========================================
   Data HUD Display
   ======================================== */

.hud-display {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-lg);
  margin: var(--spacing-3xl) 0;
}

.hud-metric {
  background: linear-gradient(135deg, rgba(0, 255, 171, 0.1) 0%, rgba(203, 163, 92, 0.05) 100%);
  border: 1px solid rgba(0, 255, 171, 0.2);
  border-radius: 4px;
  padding: var(--spacing-xl);
  text-align: center;
  transition: all var(--transition-normal);
}

.hud-metric:hover {
  border-color: var(--accent-secondary);
  box-shadow: 0 0 20px rgba(0, 255, 171, 0.3);
  transform: scale(1.05);
}

.hud-label {
  font-size: 0.85rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--spacing-sm);
}

.hud-value {
  font-size: 2rem;
  font-family: var(--font-mono);
  color: var(--accent-secondary);
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
}

.hud-unit {
  font-size: 0.9rem;
  color: var(--accent-primary);
}

/* ========================================
   Section Styles
   ======================================== */

section {
  padding: var(--spacing-3xl) 0;
  border-bottom: 1px solid rgba(0, 255, 171, 0.05);
}

section:last-child {
  border-bottom: none;
}

.section-title {
  text-align: center;
  margin-bottom: var(--spacing-3xl);
  position: relative;
  padding-bottom: var(--spacing-lg);
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100px;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--accent-secondary), transparent);
}

/* ========================================
   Forms
   ======================================== */

.form-group {
  margin-bottom: var(--spacing-lg);
}

label {
  display: block;
  margin-bottom: var(--spacing-sm);
  color: var(--accent-primary);
  font-weight: 600;
  text-transform: uppercase;
  font-size: 0.9rem;
  letter-spacing: 0.05em;
}

input[type="text"],
input[type="email"],
input[type="number"],
input[type="date"],
input[type="tel"],
select,
textarea {
  width: 100%;
  padding: var(--spacing-md);
  background-color: rgba(0, 255, 171, 0.05);
  border: 1px solid rgba(0, 255, 171, 0.2);
  color: var(--text-primary);
  font-family: var(--font-body);
  border-radius: 4px;
  transition: all var(--transition-fast);
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="number"]:focus,
input[type="date"]:focus,
input[type="tel"]:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--accent-secondary);
  box-shadow: 0 0 10px rgba(0, 255, 171, 0.2);
  background-color: rgba(0, 255, 171, 0.1);
}

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

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

footer {
  background-color: var(--bg-secondary);
  border-top: 1px solid rgba(0, 255, 171, 0.1);
  padding: var(--spacing-3xl) 0;
  margin-top: var(--spacing-3xl);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-2xl);
  margin-bottom: var(--spacing-2xl);
}

.footer-section h4 {
  color: var(--accent-primary);
  margin-bottom: var(--spacing-lg);
}

.footer-section ul {
  list-style: none;
}

.footer-section li {
  margin-bottom: var(--spacing-sm);
}

.footer-section a {
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}

.footer-section a:hover {
  color: var(--accent-secondary);
}

.footer-bottom {
  text-align: center;
  padding-top: var(--spacing-xl);
  border-top: 1px solid rgba(0, 255, 171, 0.1);
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* ========================================
   Utility Classes
   ======================================== */

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

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

.text-gold {
  color: var(--accent-primary);
}

.text-green {
  color: var(--accent-secondary);
}

.text-blue {
  color: var(--accent-tertiary);
}

.glow {
  text-shadow: 0 0 10px rgba(0, 255, 171, 0.5);
}

.glow-gold {
  text-shadow: 0 0 10px rgba(203, 163, 92, 0.5);
}

.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }
.mt-4 { margin-top: var(--spacing-xl); }
.mt-5 { margin-top: var(--spacing-2xl); }

.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }
.mb-4 { margin-bottom: var(--spacing-xl); }
.mb-5 { margin-bottom: var(--spacing-2xl); }

.py-3 { padding: var(--spacing-lg) 0; }
.py-4 { padding: var(--spacing-xl) 0; }
.py-5 { padding: var(--spacing-2xl) 0; }

.px-3 { padding: 0 var(--spacing-lg); }
.px-4 { padding: 0 var(--spacing-xl); }

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

@media (max-width: 768px) {
  h1 {
    font-size: 2rem;
  }
  
  h2 {
    font-size: 1.5rem;
  }
  
  .hero {
    min-height: 80vh;
  }
  
  .hero-content {
    padding: var(--spacing-lg);
  }
  
  .hero-cta {
    flex-direction: column;
  }
  
  .hud-display {
    grid-template-columns: 1fr;
  }
  
  .navbar-toggler {
    border-color: var(--accent-secondary);
  }
  
  .navbar-toggler-icon {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='%2300FFAB' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
  }
}

@media (max-width: 480px) {
  :root {
    --spacing-lg: 1rem;
    --spacing-xl: 1.5rem;
    --spacing-2xl: 2rem;
  }
  
  h1 {
    font-size: 1.5rem;
  }
  
  h2 {
    font-size: 1.25rem;
  }
  
  .hero-content {
    padding: var(--spacing-md);
  }
  
  .hero .tagline {
    font-size: 1.1rem;
  }
  
  .btn {
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: 0.9rem;
  }
  
  section {
    padding: var(--spacing-2xl) 0;
  }
}