/* ==========================================================================
   NEO LUX FUTURISM DESIGN SYSTEM — FULLSCREEN INTERACTIVE BACKGROUND EDITION
   Base: Deep Blacks (#060709, #080A10)
   Accents: Neon Cyan (#00F0FF), Electric Violet (#8B5CF6), Emerald (#10B981)
   ========================================================================== */

:root {
  --bg-black: #060709;
  --bg-card: rgba(12, 16, 26, 0.65);
  --bg-card-hover: rgba(18, 24, 38, 0.85);
  --border-subtle: rgba(255, 255, 255, 0.1);
  --border-glow: rgba(0, 240, 255, 0.4);
  --border-glow-purple: rgba(139, 92, 246, 0.4);
  
  --text-main: #F9FAFB;
  --text-muted: #9CA3AF;
  --text-dim: #6B7280;
  
  --neon-cyan: #00F0FF;
  --neon-cyan-glow: rgba(0, 240, 255, 0.3);
  --electric-purple: #8B5CF6;
  --electric-purple-glow: rgba(139, 92, 246, 0.3);
  
  --glass-blur: blur(20px);
  --transition-fast: 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-smooth: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  scroll-behavior: smooth;
  color-scheme: dark;
  background-color: var(--bg-black);
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  color: var(--text-main);
  background-color: var(--bg-black);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, .font-heading {
  font-family: 'Space Grotesk', sans-serif;
  letter-spacing: -0.02em;
}

.font-mono {
  font-family: 'JetBrains Mono', monospace;
}

/* Fullscreen Background Canvas Layer */
.bg-canvas-container {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}

.bg-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  filter: brightness(1.1) contrast(1.04);
}

/* Cinematic Vignette & Ambient Layer — Brightened */
.bg-canvas-overlay {
  position: absolute;
  inset: 0;
  background: 
    radial-gradient(circle at center, rgba(6, 7, 9, 0.15) 0%, rgba(6, 7, 9, 0.5) 70%, rgba(6, 7, 9, 0.8) 100%),
    linear-gradient(to bottom, rgba(6, 7, 9, 0.35) 0%, rgba(6, 7, 9, 0.1) 40%, rgba(6, 7, 9, 0.45) 80%, rgba(6, 7, 9, 0.8) 100%);
  pointer-events: none;
}

.bg-ambient-grid {
  position: fixed;
  inset: 0;
  background-image: 
    linear-gradient(to right, rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
  background-size: 80px 80px;
  pointer-events: none;
  z-index: 1;
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 7px;
}
::-webkit-scrollbar-track {
  background: rgba(6, 7, 9, 0.95);
}
::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.2);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--neon-cyan);
}

/* Glassmorphic Surfaces */
.glass-panel {
  background: var(--bg-card);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--border-subtle);
  border-radius: 18px;
  transition: all var(--transition-fast);
}

.glass-card-interactive {
  background: var(--bg-card);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--border-subtle);
  border-radius: 18px;
  transition: transform var(--transition-smooth), border-color var(--transition-smooth), box-shadow var(--transition-smooth), background var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

.glass-card-interactive::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1.5px;
  background: linear-gradient(90deg, transparent, rgba(0, 240, 255, 0.6), transparent);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.glass-card-interactive:hover {
  transform: translateY(-5px);
  background: var(--bg-card-hover);
  border-color: var(--border-glow);
  box-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.9), 0 0 30px -5px var(--neon-cyan-glow);
}

.glass-card-interactive:hover::before {
  opacity: 1;
}

/* Navigation Header */
.nav-header {
  position: fixed;
  top: 18px;
  left: 50%;
  transform: translateX(-50%);
  width: min(92%, 1150px);
  z-index: 50;
  padding: 10px 24px;
  border-radius: 9999px;
  background: rgba(10, 14, 24, 0.7);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.6);
  transition: all var(--transition-smooth);
}

.nav-link {
  color: var(--text-muted);
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
  transition: color var(--transition-fast);
  position: relative;
  padding: 4px 8px;
}

.nav-link:hover, .nav-link.active {
  color: #FFFFFF;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  background: var(--neon-cyan);
  transition: width var(--transition-fast);
  border-radius: 2px;
}

.nav-link:hover::after, .nav-link.active::after {
  width: 70%;
}

/* Badges & Status */
.badge-status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: 9999px;
  font-size: 0.8rem;
  font-weight: 500;
  background: rgba(16, 185, 129, 0.12);
  border: 1px solid rgba(16, 185, 129, 0.35);
  color: #34D399;
  backdrop-filter: blur(8px);
}

.badge-pulse-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #10B981;
  box-shadow: 0 0 8px #10B981;
  animation: pulseDot 2s infinite ease-in-out;
}

@keyframes pulseDot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.8); }
}

.tag-pill {
  font-size: 0.78rem;
  font-family: 'JetBrains Mono', monospace;
  padding: 4px 10px;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: #E2E8F0;
  transition: all var(--transition-fast);
}

.tag-pill:hover {
  background: rgba(0, 240, 255, 0.15);
  border-color: rgba(0, 240, 255, 0.4);
  color: var(--neon-cyan);
}

/* Interactive Floating HUD / Frame Indicator */
.frame-hud {
  position: fixed;
  bottom: 24px;
  left: 24px;
  z-index: 40;
  padding: 8px 14px;
  border-radius: 9999px;
  background: rgba(10, 14, 24, 0.75);
  backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, 0.12);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  color: var(--text-muted);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  gap: 8px;
}

/* Buttons */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 12px;
  font-size: 0.95rem;
  font-weight: 600;
  color: #060709;
  background: #FFFFFF;
  border: 1px solid #FFFFFF;
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  box-shadow: 0 4px 20px rgba(255, 255, 255, 0.2);
}

.btn-primary:hover {
  background: var(--neon-cyan);
  border-color: var(--neon-cyan);
  box-shadow: 0 0 30px var(--neon-cyan-glow), 0 4px 20px rgba(0, 240, 255, 0.5);
  transform: translateY(-2px);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 12px;
  font-size: 0.95rem;
  font-weight: 500;
  color: #F3F4F6;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  text-decoration: none;
  cursor: pointer;
  backdrop-filter: blur(12px);
  transition: all var(--transition-fast);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.16);
  border-color: rgba(255, 255, 255, 0.3);
  color: #FFFFFF;
  transform: translateY(-2px);
}

/* Gradient Text */
.gradient-text-cyan {
  background: linear-gradient(135deg, #FFFFFF 20%, var(--neon-cyan) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.gradient-text-purple {
  background: linear-gradient(135deg, #FFFFFF 20%, #A855F7 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Section Title Styling */
.section-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--neon-cyan);
  margin-bottom: 8px;
}

/* Skill Matrix Grid */
.skill-card {
  padding: 22px;
  border-radius: 16px;
  background: var(--bg-card);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid rgba(255, 255, 255, 0.08);
  transition: all var(--transition-smooth);
}

.skill-card:hover {
  background: var(--bg-card-hover);
  border-color: rgba(0, 240, 255, 0.4);
  transform: translateY(-3px);
  box-shadow: 0 10px 30px -5px rgba(0, 240, 255, 0.15);
}

/* Modal Styling */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(4, 5, 8, 0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.modal-backdrop.active {
  opacity: 1;
  pointer-events: auto;
}

.modal-card {
  width: min(100%, 680px);
  max-height: 85vh;
  overflow-y: auto;
  background: #0D101C;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 24px;
  padding: 34px;
  transform: scale(0.95);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: 0 30px 60px -15px rgba(0, 0, 0, 0.95), 0 0 40px var(--neon-cyan-glow);
}

.modal-backdrop.active .modal-card {
  transform: scale(1);
}

/* Toast Notifications */
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 999;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.toast {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 20px;
  background: rgba(14, 19, 31, 0.95);
  backdrop-filter: blur(12px);
  border: 1px solid var(--neon-cyan);
  border-radius: 12px;
  color: #FFFFFF;
  font-size: 0.9rem;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.7), 0 0 20px var(--neon-cyan-glow);
  animation: slideInToast 0.3s ease forwards;
}

@keyframes slideInToast {
  from { opacity: 0; transform: translateY(15px); }
  to { opacity: 1; transform: translateY(0); }
}