/**
 * Design System Foundation
 * Premium Dark Gaming Aesthetic - Intentional Minimalism
 */

:root {
  /* ============================================
     COLOR PALETTE
     ============================================ */
  
  /* Primary Backgrounds */
  --color-bg-primary: #0a0a0a;
  --color-bg-secondary: #1a1a1a;
  --color-bg-tertiary: #2a2a2a;
  
  /* Accent Colors - Gold */
  --color-accent-gold-start: #d4af37;
  --color-accent-gold-end: #ffd700;
  --color-accent-gold: linear-gradient(135deg, var(--color-accent-gold-start), var(--color-accent-gold-end));
  
  /* Accent Colors - Blue */
  --color-accent-blue-start: #1e90ff;
  --color-accent-blue-end: #4169e1;
  --color-accent-blue: linear-gradient(135deg, var(--color-accent-blue-start), var(--color-accent-blue-end));
  
  /* Semantic Colors */
  --color-success: #10b981;
  --color-error: #ef4444;
  --color-warning: #f59e0b;
  --color-info: #3b82f6;
  
  /* Text Colors */
  --color-text-primary: #ffffff;
  --color-text-secondary: #a0a0a0;
  --color-text-tertiary: #707070;
  
  /* Border Colors */
  --color-border-subtle: rgba(255, 255, 255, 0.1);
  --color-border-medium: rgba(255, 255, 255, 0.2);
  
  /* ============================================
     TYPOGRAPHY SYSTEM
     ============================================ */
  
  /* Font Families */
  --font-display: 'Cinzel', serif;
  --font-body: 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  
  /* Fluid Font Sizes */
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.375vw, 1rem);
  --text-base: clamp(1rem, 0.9rem + 0.5vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.625vw, 1.25rem);
  --text-xl: clamp(1.25rem, 1.1rem + 0.75vw, 1.5rem);
  --text-2xl: clamp(1.5rem, 1.3rem + 1vw, 2rem);
  --text-3xl: clamp(1.875rem, 1.6rem + 1.375vw, 2.5rem);
  --text-4xl: clamp(2.25rem, 1.9rem + 1.75vw, 3rem);
  --text-5xl: clamp(3rem, 2.5rem + 2.5vw, 4rem);
  
  /* Line Heights */
  --leading-tight: 1.2;
  --leading-normal: 1.5;
  --leading-relaxed: 1.75;
  
  /* Font Weights */
  --font-light: 300;
  --font-normal: 400;
  --font-medium: 500;
  --font-semibold: 600;
  --font-bold: 700;
  --font-black: 900;
  
  /* ============================================
     SPACING SYSTEM
     ============================================ */
  
  --space-1: 0.25rem;   /* 4px */
  --space-2: 0.5rem;    /* 8px */
  --space-3: 0.75rem;   /* 12px */
  --space-4: 1rem;      /* 16px */
  --space-5: 1.25rem;   /* 20px */
  --space-6: 1.5rem;    /* 24px */
  --space-8: 2rem;      /* 32px */
  --space-10: 2.5rem;   /* 40px */
  --space-12: 3rem;     /* 48px */
  --space-16: 4rem;     /* 64px */
  --space-20: 5rem;     /* 80px */
  --space-24: 6rem;     /* 96px */
  
  /* ============================================
     ANIMATION TIMING
     ============================================ */
  
  --duration-fast: 150ms;
  --duration-normal: 200ms;
  --duration-slow: 300ms;
  --duration-slower: 500ms;
  
  --easing-standard: cubic-bezier(0.4, 0, 0.2, 1);
  --easing-decelerate: cubic-bezier(0, 0, 0.2, 1);
  --easing-accelerate: cubic-bezier(0.4, 0, 1, 1);
  
  /* ============================================
     EFFECTS
     ============================================ */
  
  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.5);
  --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.6);
  --shadow-2xl: 0 25px 50px rgba(0, 0, 0, 0.7);
  
  /* Glow Effects */
  --glow-gold: 0 0 20px rgba(212, 175, 55, 0.3);
  --glow-blue: 0 0 20px rgba(30, 144, 255, 0.3);
  --glow-gold-strong: 0 0 30px rgba(212, 175, 55, 0.5);
  --glow-blue-strong: 0 0 30px rgba(30, 144, 255, 0.5);
  --glow-gold-intense: 0 0 40px rgba(212, 175, 55, 0.8), 0 0 80px rgba(212, 175, 55, 0.4);
  --glow-blue-intense: 0 0 40px rgba(30, 144, 255, 0.8), 0 0 80px rgba(30, 144, 255, 0.4);
  --glow-neon-gold: 0 0 5px rgba(212, 175, 55, 1), 0 0 10px rgba(212, 175, 55, 0.8), 0 0 20px rgba(212, 175, 55, 0.6), 0 0 40px rgba(212, 175, 55, 0.4);
  
  /* Glassmorphism */
  --glass-bg: rgba(26, 26, 26, 0.6);
  --glass-border: rgba(255, 255, 255, 0.1);
  --glass-blur: blur(10px);
  
  /* ============================================
     LAYOUT
     ============================================ */
  
  /* Breakpoints (for reference in media queries) */
  --breakpoint-mobile: 320px;
  --breakpoint-tablet: 768px;
  --breakpoint-desktop: 1024px;
  --breakpoint-wide: 1440px;
  
  /* Container Widths */
  --container-sm: 640px;
  --container-md: 768px;
  --container-lg: 1024px;
  --container-xl: 1280px;
  --container-2xl: 1536px;
  
  /* Border Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;
  
  /* Z-Index Scale */
  --z-base: 1;
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-fixed: 300;
  --z-modal-backdrop: 400;
  --z-modal: 500;
  --z-toast: 600;
}

/* ============================================
   BASE RESET & DEFAULTS
   ============================================ */

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

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

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--color-text-primary);
  background-color: var(--color-bg-primary);
  overflow-x: hidden;
  position: relative;
}

/* Fixed Background Image */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: url('https://sparky2.global/assets/erdographic/images/arkaplan.webp');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  background-attachment: fixed;
  z-index: -3;
}

/* Dark Overlay */
body::after {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(
    180deg,
    rgba(10, 10, 10, 0.85) 0%,
    rgba(10, 10, 10, 0.75) 50%,
    rgba(10, 10, 10, 0.85) 100%
  );
  z-index: -2;
  pointer-events: none;
}

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

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: var(--font-bold);
  line-height: var(--leading-tight);
  margin-bottom: var(--space-4);
}

h1 { font-size: var(--text-5xl); }
h2 { font-size: var(--text-4xl); }
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(--space-4);
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--duration-normal) var(--easing-standard);
}

/* ============================================
   GRADIENT TEXT UTILITY
   ============================================ */

.text-gradient {
  background: var(--color-accent-gold);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.text-gradient-blue {
  background: var(--color-accent-blue);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ============================================
   CONTAINER UTILITIES
   ============================================ */

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

@media (min-width: 640px) {
  .container { max-width: var(--container-sm); }
}

@media (min-width: 768px) {
  .container { 
    max-width: var(--container-md);
    padding-left: var(--space-6);
    padding-right: var(--space-6);
  }
}

@media (min-width: 1024px) {
  .container { 
    max-width: var(--container-lg);
    padding-left: var(--space-8);
    padding-right: var(--space-8);
  }
}

@media (min-width: 1280px) {
  .container { max-width: var(--container-xl); }
}

@media (min-width: 1536px) {
  .container { max-width: var(--container-2xl); }
}

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

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* Focus visible styles */
:focus-visible {
  outline: 2px solid var(--color-accent-gold-start);
  outline-offset: 2px;
}

/* Screen reader only utility */
.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;
}