/* ═══════════════════════════════════════════════════════════════
   BEELLE CYBER BLOG — Design System v2.0
   Inspired by: The Verge, Wired, Ars Technica, TechCrunch
   ═══════════════════════════════════════════════════════════════ */

/* ─── CSS Variables ─── */
:root {
  /* Colors - Cyberpunk Palette */
  --neon-cyan: #00f0ff;
  --neon-magenta: #ff00e5;
  --neon-purple: #b400ff;
  --neon-yellow: #ffe600;
  --neon-green: #39ff14;
  --neon-orange: #ff6b00;
  
  /* Backgrounds */
  --bg-primary: #0a0a0f;
  --bg-secondary: #0f0f1a;
  --bg-card: rgba(18, 18, 32, 0.9);
  --bg-card-hover: rgba(28, 28, 48, 0.95);
  --bg-elevated: rgba(25, 25, 42, 1);
  --bg-glass: rgba(15, 15, 25, 0.8);
  
  /* Text */
  --text-primary: #f0f0f8;
  --text-secondary: #9999bb;
  --text-tertiary: #666688;
  --text-muted: #444466;
  
  /* Borders */
  --border-subtle: rgba(255,255,255,0.05);
  --border-default: rgba(255,255,255,0.08);
  --border-hover: rgba(0,240,255,0.3);
  --border-active: var(--neon-cyan);
  
  /* Gradients */
  --gradient-main: linear-gradient(135deg, #00f0ff 0%, #b400ff 50%, #ff00e5 100%);
  --gradient-header: linear-gradient(180deg, rgba(0,0,0,0.95) 0%, transparent 100%);
  --gradient-card: linear-gradient(145deg, rgba(0,240,255,0.05) 0%, rgba(180,0,255,0.08) 100%);
  --gradient-hover: linear-gradient(145deg, rgba(0,240,255,0.1) 0%, rgba(180,0,255,0.15) 100%);
  --gradient-overlay: linear-gradient(180deg, transparent 0%, rgba(0,0,0,0.8) 100%);
  
  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 20px rgba(0,0,0,0.4);
  --shadow-lg: 0 8px 40px rgba(0,0,0,0.5);
  --shadow-glow: 0 0 30px rgba(0,240,255,0.15);
  --shadow-glow-lg: 0 0 60px rgba(0,240,255,0.2);
  
  /* Typography */
  --font-display: 'Orbitron', sans-serif;
  --font-body: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  
  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  
  /* Layout */
  --max-width: 1200px;
  --max-width-content: 800px;
  --header-height: 70px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

img {
  max-width: 100%;
  height: auto;
  display: block;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

input, textarea {
  font-family: inherit;
  font-size: inherit;
}

/* ─── Scrollbar ─── */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { 
  background: linear-gradient(180deg, var(--neon-purple), var(--neon-cyan)); 
  border-radius: 4px; 
}
::-webkit-scrollbar-thumb:hover { background: var(--neon-cyan); }

/* ─── Selection ─── */
::selection {
  background: rgba(180, 0, 255, 0.4);
  color: #fff;
}

/* ─── Background Effects ─── */
.bg-grid {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(0,240,255,0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,240,255,0.02) 1px, transparent 1px);
  background-size: 60px 60px;
}

.bg-particles {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  z-index: 0;
  pointer-events: none;
}

.bg-glow {
  position: fixed;
  z-index: 0;
  pointer-events: none;
  filter: blur(120px);
  opacity: 0.3;
  border-radius: 50%;
}

.bg-glow-1 {
  width: 600px; height: 600px;
  background: var(--neon-purple);
  top: -200px; right: -200px;
}

.bg-glow-2 {
  width: 400px; height: 400px;
  background: var(--neon-cyan);
  bottom: -100px; left: -100px;
}

/* ─── Utility Classes ─── */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.container-narrow {
  max-width: var(--max-width-content);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.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;
}

/* ─── Loading Screen ─── */
#loader {
  position: fixed;
  inset: 0;
  background: var(--bg-primary);
  z-index: 99999;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.6s ease, visibility 0.6s ease;
}

#loader.hidden {
  opacity: 0;
  visibility: hidden;
}

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

.loader-spinner {
  width: 50px; height: 50px;
  border: 3px solid rgba(0,240,255,0.1);
  border-top-color: var(--neon-cyan);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin: 0 auto var(--space-md);
}

.loader-text {
  font-family: var(--font-display);
  font-size: 0.8rem;
  color: var(--neon-cyan);
  letter-spacing: 3px;
  animation: pulse 1.5s ease-in-out infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }
@keyframes pulse { 0%, 100% { opacity: 0.5; } 50% { opacity: 1; } }