/**
 * Cyberpunk Professional Design System
 * King Size Game - Premium Gaming Experience
 * Version: 3.0.0 Pro Edition
 */

/* ==========================================================================
   ENHANCED DESIGN VARIABLES
   ========================================================================== */

:root {
  /* Premium Color Palette - More subtle and sophisticated */
  --primary-cyan: #00D4E6;      /* Softer cyan for main accents */
  --primary-magenta: #E91E63;   /* Refined magenta */
  --primary-violet: #7C4DFF;    /* Material deep purple */
  --primary-blue: #2196F3;      /* Professional blue */

  /* Gradient definitions for premium feel */
  --gradient-primary: linear-gradient(135deg, #00D4E6 0%, #7C4DFF 100%);
  --gradient-secondary: linear-gradient(135deg, #E91E63 0%, #FF6B00 100%);
  --gradient-dark: linear-gradient(180deg, rgba(10,10,15,0) 0%, rgba(10,10,15,0.8) 100%);
  --gradient-surface: linear-gradient(135deg, rgba(26,26,46,0.95) 0%, rgba(22,33,62,0.95) 100%);

  /* Refined backgrounds with depth */
  --bg-base: #050507;           /* Ultra dark base */
  --bg-surface: #0F0F14;        /* Surface level 1 */
  --bg-elevated: #1A1A24;       /* Surface level 2 */
  --bg-highlight: #232333;      /* Surface level 3 */
  --bg-overlay: rgba(5,5,7,0.85);

  /* Text hierarchy - more refined */
  --text-primary: rgba(255,255,255,0.95);
  --text-secondary: rgba(255,255,255,0.75);
  --text-tertiary: rgba(255,255,255,0.55);
  --text-disabled: rgba(255,255,255,0.35);

  /* Professional spacing system */
  --space-unit: 8px;
  --space-xs: calc(var(--space-unit) * 1);   /* 8px */
  --space-sm: calc(var(--space-unit) * 2);   /* 16px */
  --space-md: calc(var(--space-unit) * 3);   /* 24px */
  --space-lg: calc(var(--space-unit) * 4);   /* 32px */
  --space-xl: calc(var(--space-unit) * 6);   /* 48px */
  --space-xxl: calc(var(--space-unit) * 8);  /* 64px */
  --space-xxxl: calc(var(--space-unit) * 12); /* 96px */

  /* Refined shadows and glows */
  --glow-subtle: 0 0 20px rgba(0,212,230,0.15);
  --glow-medium: 0 0 40px rgba(0,212,230,0.25);
  --glow-strong: 0 0 60px rgba(0,212,230,0.35);

  --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);
  --shadow-xl: 0 16px 64px rgba(0,0,0,0.6);

  /* Premium transitions */
  --transition-micro: 0.1s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ==========================================================================
   BASE RESET - PROFESSIONAL FOUNDATION
   ========================================================================== */

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

*::before,
*::after {
  box-sizing: inherit;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 1rem;
  line-height: 1.7;
  color: var(--text-secondary);
  background: var(--bg-base);
  position: relative;
  overflow-x: hidden;
}

/* Premium background with subtle grid */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image:
    radial-gradient(circle at 20% 50%, rgba(0,212,230,0.05) 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(124,77,255,0.05) 0%, transparent 50%),
    radial-gradient(circle at 40% 20%, rgba(233,30,99,0.03) 0%, transparent 50%);
  pointer-events: none;
  z-index: 1;
}

/* Subtle animated grid overlay */
body::after {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image:
    linear-gradient(rgba(0,212,230,0.01) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,212,230,0.01) 1px, transparent 1px);
  background-size: 100px 100px;
  pointer-events: none;
  z-index: 1;
  opacity: 0.5;
  animation: gridMove 20s linear infinite;
}

@keyframes gridMove {
  0% { transform: translate(0, 0); }
  100% { transform: translate(100px, 100px); }
}

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

/* Import premium fonts */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Space+Grotesk:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500;600&display=swap');

h1, h2, h3, h4, h5, h6 {
  font-family: 'Space Grotesk', 'Inter', sans-serif;
  font-weight: 600;
  line-height: 1.25;
  color: var(--text-primary);
  margin-bottom: var(--space-md);
  letter-spacing: -0.02em;
  position: relative;
  z-index: 2;
}

h1 {
  font-size: clamp(2.5rem, 6vw, 5rem);
  font-weight: 700;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  filter: drop-shadow(0 2px 8px rgba(0,212,230,0.3));
}

h2 {
  font-size: clamp(2rem, 4vw, 3.5rem);
  font-weight: 600;
  color: var(--text-primary);
  text-shadow: 0 2px 16px rgba(124,77,255,0.2);
}

h3 {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 500;
}

h4 {
  font-size: clamp(1.25rem, 2vw, 1.75rem);
  font-weight: 500;
}

h5, h6 {
  font-size: clamp(1rem, 1.5vw, 1.25rem);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

p {
  margin-bottom: var(--space-md);
  color: var(--text-secondary);
  font-weight: 400;
}

/* Premium link styling */
a {
  color: var(--primary-cyan);
  text-decoration: none;
  position: relative;
  transition: var(--transition-fast);
  font-weight: 500;
}

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

/* Code and monospace text */
code,
pre,
.mono {
  font-family: 'JetBrains Mono', 'Courier New', monospace;
  font-size: 0.9em;
  background: var(--bg-elevated);
  padding: 2px 6px;
  border-radius: 4px;
  color: var(--primary-cyan);
}

/* ==========================================================================
   PREMIUM BUTTONS
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-lg);
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 600;
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: var(--transition-base);
  z-index: 1;
}

/* Primary button - sophisticated glow */
.btn-primary {
  background: var(--gradient-primary);
  color: white;
  box-shadow:
    0 4px 16px rgba(0,212,230,0.2),
    inset 0 1px 0 rgba(255,255,255,0.1);
}

.btn-primary::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
  transition: left var(--transition-slow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow:
    0 8px 24px rgba(0,212,230,0.3),
    inset 0 1px 0 rgba(255,255,255,0.2);
}

.btn-primary:hover::before {
  left: 100%;
}

.btn-primary:active {
  transform: translateY(0);
}

/* Secondary button - outlined style */
.btn-secondary {
  background: transparent;
  color: var(--primary-cyan);
  border: 1px solid var(--primary-cyan);
  position: relative;
}

.btn-secondary::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 0;
  height: 100%;
  background: rgba(0,212,230,0.1);
  transition: width var(--transition-base);
  z-index: -1;
}

.btn-secondary:hover {
  color: white;
  border-color: var(--primary-violet);
  transform: translateY(-1px);
}

.btn-secondary:hover::before {
  width: 100%;
}

/* Ghost button - minimal style */
.btn-ghost {
  background: rgba(255,255,255,0.05);
  color: var(--text-secondary);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255,255,255,0.1);
}

.btn-ghost:hover {
  background: rgba(255,255,255,0.1);
  color: var(--text-primary);
  border-color: rgba(255,255,255,0.2);
}

/* Button sizes */
.btn-sm {
  padding: var(--space-xs) var(--space-md);
  font-size: 0.875rem;
}

.btn-lg {
  padding: var(--space-md) var(--space-xl);
  font-size: 1.1rem;
}

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

.card {
  position: relative;
  background: var(--gradient-surface);
  border-radius: 12px;
  padding: var(--space-lg);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255,255,255,0.05);
  box-shadow: var(--shadow-lg);
  transition: var(--transition-base);
  overflow: hidden;
}

/* Subtle glow effect on hover */
.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--gradient-primary);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow:
    var(--shadow-xl),
    0 0 40px rgba(0,212,230,0.1);
  border-color: rgba(0,212,230,0.2);
}

.card:hover::before {
  opacity: 1;
}

/* Card variants */
.card-elevated {
  background: var(--bg-elevated);
  border: 1px solid rgba(255,255,255,0.08);
}

.card-highlight {
  background: linear-gradient(135deg, var(--bg-elevated) 0%, var(--bg-highlight) 100%);
  border: 1px solid rgba(0,212,230,0.2);
  box-shadow:
    var(--shadow-lg),
    inset 0 1px 0 rgba(255,255,255,0.05);
}

/* Glass morphism card */
.card-glass {
  background: rgba(255,255,255,0.03);
  backdrop-filter: blur(40px) saturate(180%);
  border: 1px solid rgba(255,255,255,0.1);
}

/* ==========================================================================
   PROFESSIONAL FORMS
   ========================================================================== */

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

.form-label {
  display: block;
  margin-bottom: var(--space-xs);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: var(--space-sm) var(--space-md);
  background: var(--bg-elevated);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 6px;
  color: var(--text-primary);
  font-size: 1rem;
  font-family: inherit;
  transition: var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--primary-cyan);
  background: var(--bg-highlight);
  box-shadow:
    0 0 0 3px rgba(0,212,230,0.1),
    inset 0 1px 2px rgba(0,0,0,0.3);
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--text-disabled);
}

/* Floating label effect */
.form-floating {
  position: relative;
}

.form-floating .form-input {
  padding-top: var(--space-md);
  padding-bottom: var(--space-xs);
}

.form-floating .form-label {
  position: absolute;
  top: 50%;
  left: var(--space-md);
  transform: translateY(-50%);
  transition: var(--transition-fast);
  pointer-events: none;
}

.form-floating .form-input:focus ~ .form-label,
.form-floating .form-input:not(:placeholder-shown) ~ .form-label {
  top: var(--space-xs);
  transform: translateY(0);
  font-size: 0.75rem;
  color: var(--primary-cyan);
}

/* ==========================================================================
   PREMIUM NAVIGATION
   ========================================================================== */

.nav-premium {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(5,5,7,0.9);
  backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid rgba(255,255,255,0.05);
  z-index: 1000;
  transition: var(--transition-base);
}

.nav-premium.scrolled {
  background: rgba(5,5,7,0.98);
  box-shadow: var(--shadow-lg);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md) var(--space-lg);
  max-width: 1400px;
  margin: 0 auto;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  list-style: none;
}

.nav-link {
  padding: var(--space-xs) var(--space-md);
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 0.95rem;
  position: relative;
  transition: var(--transition-fast);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%) scaleX(0);
  width: 80%;
  height: 2px;
  background: var(--gradient-primary);
  transition: transform var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
  color: var(--text-primary);
}

.nav-link:hover::after,
.nav-link.active::after {
  transform: translateX(-50%) scaleX(1);
}

/* ==========================================================================
   PREMIUM ANIMATIONS
   ========================================================================== */

/* Fade in animation */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  animation: fadeIn var(--transition-slow) ease-out;
}

/* Pulse animation for CTAs */
@keyframes pulse {
  0%, 100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.05);
  }
}

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

/* Shimmer effect for loading states */
@keyframes shimmer {
  0% {
    background-position: -200% 0;
  }
  100% {
    background-position: 200% 0;
  }
}

.shimmer {
  background: linear-gradient(
    90deg,
    var(--bg-elevated) 25%,
    var(--bg-highlight) 50%,
    var(--bg-elevated) 75%
  );
  background-size: 200% 100%;
  animation: shimmer 1.5s ease-in-out infinite;
}

/* Glow pulse for important elements */
@keyframes glowPulse {
  0%, 100% {
    box-shadow: 0 0 20px rgba(0,212,230,0.2);
  }
  50% {
    box-shadow: 0 0 40px rgba(0,212,230,0.4);
  }
}

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

/* ==========================================================================
   UTILITY CLASSES
   ========================================================================== */

/* Spacing utilities */
.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--space-xs); }
.mt-2 { margin-top: var(--space-sm); }
.mt-3 { margin-top: var(--space-md); }
.mt-4 { margin-top: var(--space-lg); }
.mt-5 { margin-top: var(--space-xl); }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--space-xs); }
.mb-2 { margin-bottom: var(--space-sm); }
.mb-3 { margin-bottom: var(--space-md); }
.mb-4 { margin-bottom: var(--space-lg); }
.mb-5 { margin-bottom: var(--space-xl); }

.p-0 { padding: 0; }
.p-1 { padding: var(--space-xs); }
.p-2 { padding: var(--space-sm); }
.p-3 { padding: var(--space-md); }
.p-4 { padding: var(--space-lg); }
.p-5 { padding: var(--space-xl); }

/* Text utilities */
.text-primary { color: var(--text-primary); }
.text-secondary { color: var(--text-secondary); }
.text-tertiary { color: var(--text-tertiary); }
.text-cyan { color: var(--primary-cyan); }
.text-magenta { color: var(--primary-magenta); }
.text-violet { color: var(--primary-violet); }

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

.text-sm { font-size: 0.875rem; }
.text-base { font-size: 1rem; }
.text-lg { font-size: 1.125rem; }
.text-xl { font-size: 1.25rem; }
.text-2xl { font-size: 1.5rem; }

.font-light { font-weight: 300; }
.font-normal { font-weight: 400; }
.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }

/* Display utilities */
.d-none { display: none; }
.d-block { display: block; }
.d-inline { display: inline; }
.d-inline-block { display: inline-block; }
.d-flex { display: flex; }
.d-grid { display: grid; }

/* Flexbox utilities */
.flex-row { flex-direction: row; }
.flex-column { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.justify-start { justify-content: flex-start; }
.justify-center { justify-content: center; }
.justify-end { justify-content: flex-end; }
.justify-between { justify-content: space-between; }
.align-start { align-items: flex-start; }
.align-center { align-items: center; }
.align-end { align-items: flex-end; }

/* Container utilities */
.container {
  width: 100%;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.container-fluid {
  width: 100%;
  padding: 0 var(--space-lg);
}

/* Section spacing */
.section {
  padding: var(--space-xxxl) 0;
  position: relative;
  z-index: 2;
}

.section-sm {
  padding: var(--space-xxl) 0;
}

.section-lg {
  padding: calc(var(--space-xxxl) * 1.5) 0;
}

/* ==========================================================================
   RESPONSIVE DESIGN
   ========================================================================== */

@media (max-width: 1200px) {
  .container {
    max-width: 1024px;
  }
}

@media (max-width: 992px) {
  .container {
    max-width: 768px;
  }

  .nav-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 400px;
    height: 100vh;
    background: var(--bg-surface);
    flex-direction: column;
    align-items: flex-start;
    padding: var(--space-xxl) var(--space-lg);
    transition: right var(--transition-base);
  }

  .nav-menu.active {
    right: 0;
  }
}

@media (max-width: 768px) {
  :root {
    --space-unit: 6px;
  }

  .container {
    padding: 0 var(--space-md);
  }

  h1 {
    font-size: clamp(2rem, 8vw, 3rem);
  }

  h2 {
    font-size: clamp(1.5rem, 6vw, 2.5rem);
  }

  .section {
    padding: var(--space-xxl) 0;
  }
}

@media (max-width: 480px) {
  .btn {
    width: 100%;
  }

  .card {
    padding: var(--space-md);
  }
}