/* 
  ===================================================================
  ABHISHEK UNIYAL PORTFOLIO MASTER DESIGN SYSTEM
  Day & Night Mode Enabled | 8px Spatial Grid | Glassmorphism UI
  ===================================================================
*/

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

:root {
  --bg-main: #070707;
  --surface: #111111;
  --surface-hover: #18181B;
  --brand-primary: #4F8CFF;
  --accent-cyan: #00D9FF;
  --accent-purple: #8B5CF6;
  --text-primary: #FFFFFF;
  --text-secondary: #9CA3AF;
  --border-subtle: rgba(255, 255, 255, 0.08);
  --glass-bg: rgba(17, 17, 17, 0.75);
  --glass-border: rgba(255, 255, 255, 0.1);
  --card-shadow: 0 12px 40px rgba(0, 0, 0, 0.6);
  --success: #22C55E;
  --warning: #F59E0B;
  --error: #EF4444;

  --font-heading: 'Space Grotesk', sans-serif;
  --font-body: 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

/* Day / Light Theme Tokens */
[data-theme="light"] {
  --bg-main: #F8FAFC;
  --surface: #FFFFFF;
  --surface-hover: #F1F5F9;
  --brand-primary: #2563EB;
  --accent-cyan: #0284C7;
  --accent-purple: #7C3AED;
  --text-primary: #0F172A;
  --text-secondary: #475569;
  --border-subtle: rgba(0, 0, 0, 0.08);
  --glass-bg: rgba(255, 255, 255, 0.85);
  --glass-border: rgba(0, 0, 0, 0.1);
  --card-shadow: 0 12px 30px rgba(0, 0, 0, 0.08);
}

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

html {
  scroll-behavior: smooth;
  background-color: var(--bg-main);
  color: var(--text-primary);
  font-family: var(--font-body);
  transition: background-color 0.4s ease, color 0.4s ease;
}

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

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: var(--bg-main);
}
::-webkit-scrollbar-thumb {
  background: var(--border-subtle);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--accent-cyan);
}

/* Background Noise Grid */
.bg-noise {
  background-image: radial-gradient(var(--border-subtle) 1px, transparent 1px);
  background-size: 24px 24px;
}

/* Glassmorphism Panel */
.glass-panel {
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  box-shadow: var(--card-shadow);
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.glass-panel:hover {
  border-color: var(--accent-cyan);
  transform: translateY(-4px);
}

/* Custom Glowing Dot Cursor */
#custom-cursor {
  position: fixed;
  top: 0;
  left: 0;
  width: 12px;
  height: 12px;
  background-color: var(--accent-cyan);
  border-radius: 50%;
  pointer-events: none;
  z-index: 99999;
  box-shadow: 0 0 12px var(--accent-cyan);
  transition: transform 0.1s ease-out, background-color 0.2s ease;
  transform: translate(-50%, -50%);
}

#custom-cursor-trail {
  position: fixed;
  top: 0;
  left: 0;
  width: 32px;
  height: 32px;
  border: 1px solid var(--accent-cyan);
  border-radius: 50%;
  pointer-events: none;
  z-index: 99998;
  opacity: 0.5;
  transition: transform 0.2s ease-out;
  transform: translate(-50%, -50%);
}

/* Reading Scroll Progress Line */
#reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--brand-primary), var(--accent-cyan), var(--accent-purple));
  z-index: 10000;
  width: 0%;
  box-shadow: 0 0 10px var(--accent-cyan);
}

/* Top Glass Header */
.navbar-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 9900;
  padding: 16px 24px;
  transition: all 0.4s ease;
}

.navbar-header.scrolled {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--glass-border);
  padding: 12px 24px;
  box-shadow: var(--card-shadow);
}

/* FEATURED CARTOON AVATAR SHOWCASE STYLING */
.featured-avatar-container {
  position: relative;
  width: 320px;
  height: 320px;
  margin: 0 auto 36px auto;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: floatAvatar 6s ease-in-out infinite;
}

.footer-featured-avatar {
  position: relative;
  width: 280px;
  height: 280px;
  margin: 0 auto 32px auto;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: floatAvatar 6s ease-in-out infinite 1s;
}

@keyframes floatAvatar {
  0%, 100% { transform: translateY(0px) rotate(0deg); }
  50% { transform: translateY(-16px) rotate(1.2deg); }
}

.avatar-ambient-glow {
  position: absolute;
  inset: -20px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 217, 255, 0.4) 0%, rgba(79, 140, 255, 0.2) 50%, transparent 75%);
  filter: blur(25px);
  animation: pulseGlow 4s ease-in-out infinite;
}

@keyframes pulseGlow {
  0%, 100% { opacity: 0.6; filter: blur(25px); }
  50% { opacity: 0.9; filter: blur(35px); }
}

.avatar-image-frame {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  padding: 6px;
  background: linear-gradient(135deg, var(--accent-cyan), var(--brand-primary), var(--accent-purple));
  box-shadow: 0 0 60px rgba(0, 217, 255, 0.4), inset 0 0 25px rgba(0, 0, 0, 0.5);
  position: relative;
  z-index: 2;
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  cursor: pointer;
}

.avatar-image-frame:hover {
  transform: scale(1.08) rotate(-1deg);
}

.avatar-image-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 50%;
  background: var(--surface);
  display: block;
}

.avatar-tech-badge {
  position: absolute;
  bottom: 0px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(7, 7, 7, 0.9);
  backdrop-filter: blur(12px);
  border: 1px solid var(--accent-cyan);
  color: var(--accent-cyan);
  padding: 6px 18px;
  border-radius: 20px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: bold;
  letter-spacing: 1px;
  z-index: 10;
  box-shadow: 0 0 20px rgba(0, 217, 255, 0.5);
  white-space: nowrap;
}

/* Responsive Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Text styles */
.font-heading { font-family: var(--font-heading); }
.font-mono { font-family: var(--font-mono); }

.text-gradient {
  background: linear-gradient(135deg, var(--text-primary) 0%, var(--text-secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.text-gradient-cyan {
  background: linear-gradient(135deg, var(--accent-cyan) 0%, var(--brand-primary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Preloader SVG Stroke Drawing */
@keyframes drawStroke {
  0% { stroke-dashoffset: 1000; }
  100% { stroke-dashoffset: 0; }
}

.animate-stroke {
  stroke-dasharray: 1000;
  stroke-dashoffset: 1000;
  animation: drawStroke 2.2s cubic-bezier(0.65, 0, 0.35, 1) forwards;
}

/* Light/Dark Theme Switcher Button */
.theme-toggle-btn {
  background: var(--surface);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  padding: 8px 16px;
  border-radius: 20px;
  font-family: var(--font-mono);
  font-size: 12px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: all 0.3s ease;
  white-space: nowrap;
}

.theme-toggle-btn:hover {
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
}

/* Grid layout utilities */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 24px;
}

/* -------------------------------------------------------------------
   MOBILE OPTIMIZED RESPONSIVE STYLES
   ------------------------------------------------------------------- */
@media (max-width: 768px) {
  .navbar-header {
    padding: 10px 12px !important;
  }
  
  .header-actions {
    gap: 6px !important;
  }

  .header-brand-sub {
    display: none !important;
  }

  .header-brand-title {
    font-size: 13px !important;
  }

  .theme-toggle-btn {
    padding: 6px 10px !important;
    font-size: 11px !important;
  }

  .theme-toggle-text {
    display: none !important; /* Hide text on small screens, keep icon */
  }

  .header-nav-btn {
    padding: 6px 10px !important;
    font-size: 11px !important;
  }

  .featured-avatar-container {
    width: 220px;
    height: 220px;
  }

  .footer-featured-avatar {
    width: 200px;
    height: 200px;
  }

  .hero-title {
    font-size: 40px !important;
  }

  .grid-3, .grid-2 {
    grid-template-columns: 1fr;
  }
}