/* 
 * Aman Sharma - Premium Portfolio Website Stylesheet
 * Advanced Styling with Neon Gradients, True Glassmorphism, and Immersive Animations.
 */

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

:root {
  /* HSL Color System */
  --bg-primary: hsl(222, 25%, 6%);
  --bg-secondary: hsl(222, 20%, 9%);
  --card-bg: hsla(222, 20%, 12%, 0.6);
  --card-border: hsla(222, 20%, 25%, 0.5);
  
  --accent-cyan: hsl(174, 96%, 47%);
  --accent-cyan-rgb: 4, 233, 205;
  --accent-indigo: hsl(252, 85%, 64%);
  --accent-indigo-rgb: 104, 92, 246;
  --accent-violet: hsl(282, 85%, 60%);
  
  --text-primary: hsl(210, 38%, 95%);
  --text-secondary: hsl(215, 20%, 65%);
  --text-muted: hsl(217, 12%, 45%);
  
  --nav-bg: hsla(222, 25%, 6%, 0.7);
  
  --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  
  --transition-smooth: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-fast: all 0.2s ease;
  
  --shadow-neon: 0 0 20px hsla(174, 96%, 47%, 0.15);
  --shadow-indigo: 0 0 20px hsla(252, 85%, 64%, 0.15);
  --shadow-card: 0 10px 30px -10px rgba(2, 4, 8, 0.5);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-sans);
  overflow-x: hidden;
}

body {
  overflow-x: hidden;
  line-height: 1.6;
  position: relative;
}

/* Scrollbar Design */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
  background: hsl(222, 15%, 20%);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--accent-cyan);
}

/* Utility Gradients & Badges */
.text-gradient {
  background: linear-gradient(135deg, var(--accent-cyan) 0%, var(--accent-indigo) 50%, var(--accent-violet) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.text-gradient-cyan {
  background: linear-gradient(135deg, var(--text-primary) 30%, var(--accent-cyan) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.badge {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 0.35rem 0.85rem;
  border-radius: 20px;
  border: 1px solid var(--accent-cyan);
  color: var(--accent-cyan);
  background: hsla(174, 96%, 47%, 0.06);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  width: max-content;
  box-shadow: var(--shadow-neon);
}

.badge-indigo {
  border-color: var(--accent-indigo);
  color: var(--accent-indigo);
  background: hsla(252, 85%, 64%, 0.06);
  box-shadow: var(--shadow-indigo);
}

/* Background Interactive Particle Area Canvas */
#network-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: -1;
  pointer-events: none;
  opacity: 0.4;
}

/* Floating Blur Circle Decorations */
.blur-circle {
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  z-index: -2;
  opacity: 0.15;
  pointer-events: none;
}

.circle-1 {
  width: 500px;
  height: 500px;
  background: var(--accent-cyan);
  top: -100px;
  right: -100px;
}

.circle-2 {
  width: 600px;
  height: 600px;
  background: var(--accent-indigo);
  bottom: 10%,
  left: -200px;
}

/* Fixed Header & Navigation */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  background: var(--nav-bg);
  backdrop-filter: blur(16px) saturate(180%);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  border-bottom: 1px solid var(--card-border);
  transition: var(--transition-smooth);
}

.nav-container {
  max-width: 1300px;
  margin: 0 auto;
  padding: 1.25rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-family: var(--font-sans);
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  color: var(--text-primary);
}

.logo span {
  font-weight: 300;
  color: var(--accent-cyan);
}

nav ul {
  display: flex;
  list-style: none;
  gap: 2.5rem;
}

nav a {
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: var(--transition-fast);
  position: relative;
  padding: 0.25rem 0;
}

nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-cyan), var(--accent-indigo));
  transition: var(--transition-fast);
}

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

nav a:hover::after {
  width: 100%;
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.btn-header {
  text-decoration: none;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent-cyan);
  border: 1px solid hsla(174, 96%, 47%, 0.4);
  padding: 0.55rem 1.25rem;
  border-radius: 6px;
  background: hsla(174, 96%, 47%, 0.03);
  transition: var(--transition-smooth);
}

.btn-header:hover {
  background: hsla(174, 96%, 47%, 0.1);
  border-color: var(--accent-cyan);
  box-shadow: var(--shadow-neon);
  transform: translateY(-2px);
}

/* Mobile Toggle */
.mobile-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
}

.mobile-toggle span {
  display: block;
  width: 25px;
  height: 2px;
  background: var(--text-primary);
  margin-bottom: 5px;
  transition: var(--transition-fast);
}

.mobile-toggle span:last-child {
  margin-bottom: 0;
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 8rem 2rem 4rem 2rem;
  max-width: 1300px;
  margin: 0 auto;
  position: relative;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 4rem;
  align-items: center;
  width: 100%;
}

.hero-content {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.hero-subtitle {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--accent-cyan);
  letter-spacing: 0.05em;
}

.hero-title {
  font-size: 4rem;
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.hero-desc {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin-bottom: 1rem;
}

.hero-buttons {
  display: flex;
  gap: 1.5rem;
}

/* Premium Buttons */
.btn {
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 600;
  padding: 0.9rem 2rem;
  border-radius: 8px;
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  transition: var(--transition-smooth);
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-cyan) 0%, var(--accent-indigo) 100%);
  color: hsl(222, 25%, 6%);
  box-shadow: 0 4px 20px -5px hsla(174, 96%, 47%, 0.4);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 30px -5px hsla(174, 96%, 47%, 0.6);
}

.btn-secondary {
  background: hsla(222, 20%, 15%, 0.4);
  color: var(--text-primary);
  border: 1px solid var(--card-border);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  background: hsla(222, 20%, 20%, 0.6);
  border-color: var(--accent-cyan);
  box-shadow: var(--shadow-neon);
  transform: translateY(-3px);
}

/* Hero Widget Panel (WOW factor representation of Data) */
.hero-widget {
  position: relative;
  width: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
}

.widget-container {
  width: 380px;
  height: 380px;
  border-radius: 24px;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: var(--shadow-card);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  overflow: hidden;
  position: relative;
}

.widget-container::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--accent-cyan), var(--accent-indigo));
}

.widget-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.widget-title {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.widget-body {
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 1.5rem;
}

.widget-chart-line {
  height: 100px;
  width: 100%;
  position: relative;
}

.widget-progress-wrapper {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.widget-progress-label {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.8rem;
}

.widget-progress-bar {
  height: 6px;
  border-radius: 3px;
  background: hsl(222, 15%, 20%);
  overflow: hidden;
}

.widget-progress-fill {
  height: 100%;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--accent-cyan), var(--accent-indigo));
}

.widget-footer {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  text-align: right;
  border-top: 1px solid hsl(222, 15%, 20%);
  padding-top: 0.8rem;
}

/* Stats Section Dashboard */
.stats-bar {
  max-width: 1300px;
  margin: 0 auto;
  padding: 0 2rem 6rem 2rem;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
}

.stat-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  backdrop-filter: blur(10px);
  border-radius: 16px;
  padding: 2rem;
  text-align: center;
  transition: var(--transition-smooth);
  box-shadow: var(--shadow-card);
}

.stat-card:hover {
  transform: translateY(-5px);
  border-color: hsla(174, 96%, 47%, 0.3);
  box-shadow: var(--shadow-neon), var(--shadow-card);
}

.stat-num {
  font-size: 2.8rem;
  font-weight: 800;
  color: var(--accent-cyan);
  line-height: 1;
  margin-bottom: 0.5rem;
  font-family: var(--font-mono);
}

.stat-label {
  font-size: 0.95rem;
  color: var(--text-secondary);
  font-weight: 500;
}

/* Section Common Layout */
section {
  padding: 6rem 2rem;
  max-width: 1300px;
  margin: 0 auto;
}

.section-header {
  margin-bottom: 4rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.section-title {
  font-size: 2.5rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.section-line {
  width: 60px;
  height: 4px;
  background: linear-gradient(90deg, var(--accent-cyan), var(--accent-indigo));
  border-radius: 2px;
}

/* About & Skills Grid */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 4rem;
}

.about-text {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  font-size: 1.05rem;
  color: var(--text-secondary);
}

.about-text p span {
  color: var(--text-primary);
  font-weight: 600;
}

.skills-wrapper {
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
}

.skills-category {
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
}

.skills-category-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.skills-category-title i {
  color: var(--accent-cyan);
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.2rem;
}

.skill-pill {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  padding: 0.9rem 1.2rem;
  border-radius: 12px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: var(--transition-fast);
}

.skill-pill:hover {
  border-color: var(--accent-cyan);
  background: hsla(222, 20%, 15%, 0.8);
  box-shadow: 0 4px 15px -5px rgba(4, 233, 205, 0.1);
  transform: scale(1.02);
}

.skill-name {
  font-weight: 600;
  font-size: 0.95rem;
}

.skill-tech {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent-cyan);
}

/* Experience & Internships Timeline */
.timeline {
  position: relative;
  max-width: 1000px;
  margin: 0 auto;
  padding: 2rem 0;
}

.timeline::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  width: 2px;
  height: 100%;
  background: linear-gradient(to bottom, var(--card-border) 0%, var(--accent-cyan) 30%, var(--accent-indigo) 70%, var(--card-border) 100%);
  transform: translateX(-50%);
}

.timeline-item {
  position: relative;
  width: 50%;
  padding: 2rem;
  box-sizing: border-box;
}

.timeline-item:nth-child(odd) {
  left: 0;
  padding-right: 4rem;
  text-align: right;
}

.timeline-item:nth-child(even) {
  left: 50%;
  padding-left: 4rem;
}

.timeline-dot {
  position: absolute;
  top: 2.5rem;
  left: 50%;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--bg-primary);
  border: 4px solid var(--accent-cyan);
  transform: translateX(-50%);
  z-index: 5;
  transition: var(--transition-fast);
}

.timeline-item:nth-child(even) .timeline-dot {
  border-color: var(--accent-indigo);
}

.timeline-item:hover .timeline-dot {
  transform: translateX(-50%) scale(1.3);
  background: var(--accent-cyan);
  box-shadow: var(--shadow-neon);
}

.timeline-item:nth-child(even):hover .timeline-dot {
  background: var(--accent-indigo);
  box-shadow: var(--shadow-indigo);
}

.timeline-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 16px;
  padding: 2.2rem;
  backdrop-filter: blur(10px);
  transition: var(--transition-smooth);
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.timeline-item:nth-child(odd) .timeline-card {
  align-items: flex-end;
}

.timeline-item:nth-child(even) .timeline-card {
  align-items: flex-start;
}

.timeline-card:hover {
  transform: translateY(-5px);
  border-color: var(--accent-cyan);
  box-shadow: var(--shadow-neon), var(--shadow-card);
}

.timeline-item:nth-child(even) .timeline-card:hover {
  border-color: var(--accent-indigo);
  box-shadow: var(--shadow-indigo), var(--shadow-card);
}

.timeline-date {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent-cyan);
}

.timeline-item:nth-child(even) .timeline-date {
  color: var(--accent-indigo);
}

.timeline-title {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text-primary);
}

.timeline-subtitle {
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.timeline-brand {
  display: flex;
  align-items: center;
  gap: 1.2rem;
  margin-top: 0.5rem;
  margin-bottom: 0.5rem;
}

.timeline-item:nth-child(odd) .timeline-brand {
  flex-direction: row-reverse;
  text-align: right;
}

.timeline-logo-img {
  width: 60px;
  height: 60px;
  object-fit: contain;
  border-radius: 12px;
  border: 1px solid var(--card-border);
  background: white;
  padding: 4px;
  transition: var(--transition-smooth);
}

.timeline-card:hover .timeline-logo-img {
  transform: scale(1.1) rotate(3deg);
  border-color: var(--accent-cyan);
}

.timeline-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
}

.timeline-desc li {
  list-style: none;
  position: relative;
  padding-bottom: 0.5rem;
}

.timeline-desc li::after {
  content: '▪';
  color: var(--accent-cyan);
  display: inline-block;
  margin-left: 0.5rem;
}

.timeline-item:nth-child(even) .timeline-desc li::before {
  content: '▪';
  color: var(--accent-indigo);
  display: inline-block;
  margin-right: 0.5rem;
}

.timeline-item:nth-child(even) .timeline-desc li::after {
  display: none;
}

.timeline-btn {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent-cyan);
  background: none;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 0.5rem;
  transition: var(--transition-fast);
}

.timeline-item:nth-child(even) .timeline-btn {
  color: var(--accent-indigo);
}

.timeline-btn:hover {
  letter-spacing: 0.05em;
  text-shadow: 0 0 8px rgba(100, 252, 241, 0.4);
}

/* Projects Section (Filterable Grid) */
.filter-tabs {
  display: flex;
  justify-content: center;
  list-style: none;
  gap: 1.2rem;
  margin-bottom: 3.5rem;
  flex-wrap: wrap;
}

.filter-tab {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  border: 1px solid var(--card-border);
  padding: 0.6rem 1.4rem;
  border-radius: 30px;
  cursor: pointer;
  background: hsla(222, 20%, 15%, 0.4);
  transition: var(--transition-smooth);
}

.filter-tab:hover, .filter-tab.active {
  border-color: var(--accent-cyan);
  color: var(--text-primary);
  background: hsla(174, 96%, 47%, 0.06);
  box-shadow: var(--shadow-neon);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
  gap: 2rem;
}

.project-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 16px;
  padding: 2.2rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 1.5rem;
  backdrop-filter: blur(10px);
  transition: var(--transition-smooth);
  box-shadow: var(--shadow-card);
  height: 100%;
}

.project-card:hover {
  transform: translateY(-8px);
  border-color: var(--accent-cyan);
  box-shadow: var(--shadow-neon), var(--shadow-card);
}

.project-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.project-header i {
  font-size: 1.8rem;
  color: var(--accent-cyan);
}

.project-links {
  display: flex;
  gap: 1rem;
}

.project-links a {
  color: var(--text-secondary);
  font-size: 1.25rem;
  transition: var(--transition-fast);
}

.project-links a:hover {
  color: var(--accent-cyan);
  transform: translateY(-2px);
}

.project-info {
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}

.project-title {
  font-size: 1.35rem;
  font-weight: 700;
  line-height: 1.3;
}

.project-desc {
  color: var(--text-secondary);
  font-size: 0.95rem;
  display: -webkit-box;
  -webkit-line-clamp: 4;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.project-tech-span {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent-cyan);
  background: hsla(174, 96%, 47%, 0.05);
  border: 1px solid hsla(174, 96%, 47%, 0.1);
  padding: 0.25rem 0.65rem;
  border-radius: 4px;
}

/* Certificates Grid Gallery */
.certs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 2rem;
}

.cert-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 16px;
  padding: 1.8rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 1.2rem;
  backdrop-filter: blur(10px);
  transition: var(--transition-smooth);
  box-shadow: var(--shadow-card);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.cert-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, hsla(174, 96%, 47%, 0.05) 0%, hsla(252, 85%, 64%, 0.05) 100%);
  opacity: 0;
  transition: var(--transition-fast);
}

.cert-card:hover::after {
  opacity: 1;
}

.cert-card:hover {
  transform: translateY(-5px);
  border-color: var(--accent-cyan);
  box-shadow: var(--shadow-neon), var(--shadow-card);
}

.cert-badge {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--accent-cyan);
  background: hsla(174, 96%, 47%, 0.05);
  padding: 0.3rem 0.6rem;
  border-radius: 4px;
  align-self: flex-start;
}

.cert-title {
  font-size: 1.15rem;
  font-weight: 700;
  line-height: 1.3;
}

.cert-issuer {
  font-size: 0.9rem;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.cert-issuer i {
  color: var(--accent-indigo);
}

.cert-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid hsl(222, 15%, 20%);
  padding-top: 0.8rem;
}

.cert-date {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
}

.cert-view-btn {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent-cyan);
  background: none;
  border: none;
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

/* Contact & Social Hub */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 4rem;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.contact-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 16px;
  padding: 2rem;
  display: flex;
  align-items: center;
  gap: 1.5rem;
  box-shadow: var(--shadow-card);
}

.contact-icon {
  width: 50px;
  height: 50px;
  border-radius: 12px;
  background: hsla(174, 96%, 47%, 0.08);
  border: 1px solid hsla(174, 96%, 47%, 0.2);
  color: var(--accent-cyan);
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 1.25rem;
  box-shadow: var(--shadow-neon);
}

.contact-details {
  display: flex;
  flex-direction: column;
}

.contact-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.contact-value {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  text-decoration: none;
  transition: var(--transition-fast);
}

a.contact-value:hover {
  color: var(--accent-cyan);
}

.social-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.2rem;
  margin-top: 1.5rem;
}

.social-box {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  padding: 1.2rem;
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 1rem;
  color: var(--text-primary);
  font-weight: 600;
  transition: var(--transition-smooth);
}

.social-box i {
  font-size: 1.5rem;
  color: var(--text-secondary);
  transition: var(--transition-fast);
}

.social-box:hover {
  border-color: var(--accent-cyan);
  box-shadow: var(--shadow-neon);
  transform: translateY(-3px);
}

.social-box:hover i {
  color: var(--accent-cyan);
}

/* Contact Form */
.contact-form-container {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 20px;
  padding: 3rem;
  box-shadow: var(--shadow-card);
  backdrop-filter: blur(10px);
}

.form-group-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.form-group {
  margin-bottom: 2rem;
  position: relative;
}

.form-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-bottom: 0.6rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.form-input {
  width: 100%;
  background: hsla(222, 20%, 8%, 0.6);
  border: 1px solid var(--card-border);
  border-radius: 8px;
  padding: 1rem;
  color: var(--text-primary);
  font-size: 1rem;
  transition: var(--transition-fast);
}

.form-input:focus {
  outline: none;
  border-color: var(--accent-cyan);
  box-shadow: 0 0 10px hsla(174, 96%, 47%, 0.1);
}

textarea.form-input {
  resize: vertical;
  min-height: 150px;
}

/* Custom Immersive Modal Frame */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1000;
  display: flex;
  justify-content: center;
  align-items: center;
  background: rgba(4, 5, 8, 0.8);
  backdrop-filter: blur(25px);
  -webkit-backdrop-filter: blur(25px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

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

.modal-content {
  background: var(--bg-secondary);
  border: 1px solid var(--card-border);
  border-radius: 24px;
  width: 90%;
  max-width: 1000px;
  height: 85%;
  display: flex;
  flex-direction: column;
  box-shadow: 0 20px 50px -10px rgba(0, 0, 0, 0.7), 0 0 30px hsla(174, 96%, 47%, 0.1);
  overflow: hidden;
  transform: scale(0.9);
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

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

.modal-header {
  padding: 1.5rem 2rem;
  border-bottom: 1px solid var(--card-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.modal-title {
  font-size: 1.25rem;
  font-weight: 700;
}

.modal-close {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-secondary);
  font-size: 1.5rem;
  transition: var(--transition-fast);
}

.modal-close:hover {
  color: var(--accent-cyan);
  transform: rotate(90deg);
}

.modal-body {
  flex-grow: 1;
  padding: 2rem;
  position: relative;
  background: hsl(222, 25%, 5%);
  display: flex;
  justify-content: center;
  align-items: center;
}

.modal-body iframe, .modal-body object {
  width: 100%;
  height: 100%;
  border-radius: 12px;
  border: none;
}

.modal-body img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  border-radius: 8px;
}

.modal-loader {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.spinner {
  width: 40px;
  height: 40px;
  border: 4px solid hsl(222, 15%, 20%);
  border-top-color: var(--accent-cyan);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Footer Section */
footer {
  border-top: 1px solid var(--card-border);
  padding: 3rem 2rem;
  background: var(--bg-secondary);
}

.footer-container {
  max-width: 1300px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-text {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.footer-text span {
  color: var(--accent-cyan);
}

/* Fade In Animation on Scroll */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

/* Responsive Breakpoints */
@media (max-width: 1100px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  .hero-widget {
    order: -1;
  }
  .about-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
}

@media (max-width: 900px) {
  html {
    font-size: 15px;
  }
  
  .nav-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 300px;
    height: 100vh;
    background: var(--bg-secondary);
    border-left: 1px solid var(--card-border);
    flex-direction: column;
    padding: 6rem 3rem;
    gap: 2rem;
    transition: var(--transition-smooth);
    box-shadow: -10px 0 30px rgba(0,0,0,0.5);
  }
  
  .nav-menu.active {
    right: 0;
  }
  
  .mobile-toggle {
    display: block;
    z-index: 101;
  }
  
  .mobile-toggle.active span:first-child {
    transform: translateY(7px) rotate(45deg);
  }
  .mobile-toggle.active span:nth-child(2) {
    opacity: 0;
  }
  .mobile-toggle.active span:last-child {
    transform: translateY(-7px) rotate(-45deg);
  }
  
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .timeline::before {
    left: 30px;
  }
  .timeline-item {
    width: 100%;
    padding-left: 5rem;
    padding-right: 0 !important;
    text-align: left !important;
  }
  .timeline-item:nth-child(odd) {
    left: 0;
  }
  .timeline-item:nth-child(even) {
    left: 0;
  }
  .timeline-dot {
    left: 30px;
  }
  .timeline-card {
    align-items: flex-start !important;
  }
}

@media (max-width: 600px) {
  section {
    padding: 4rem 1rem;
  }
  .hero-title {
    font-size: 2.5rem;
  }
  .hero-buttons {
    flex-direction: column;
  }
  .stats-grid {
    grid-template-columns: 1fr;
  }
  .form-group-row {
    grid-template-columns: 1fr;
    margin-bottom: 0;
  }
  .skills-grid {
    grid-template-columns: 1fr;
  }
  .projects-grid, .certs-grid {
    grid-template-columns: 1fr;
  }
  .filter-tabs {
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.5rem;
  }
  .filter-tab {
    font-size: 0.85rem;
    padding: 0.5rem 1rem;
  }
  .social-grid {
    grid-template-columns: 1fr;
  }
  .contact-form-container {
    padding: 2rem 1.5rem;
  }
  .footer-container {
    flex-direction: column;
    gap: 1.5rem;
    text-align: center;
  }
  .timeline::before {
    left: 20px;
  }
  .timeline-dot {
    left: 20px;
  }
  .timeline-item {
    padding-left: 3.5rem;
  }
  .timeline-card {
    padding: 1.5rem;
  }
}

/* Core Strengths */
.strengths-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}
.strength-card {
  background: var(--surface);
  border: 1px solid var(--surface-light);
  border-radius: 16px;
  padding: 2rem;
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}
.strength-card:hover {
  transform: translateY(-5px);
  border-color: var(--accent-cyan);
  box-shadow: 0 10px 30px rgba(0, 240, 255, 0.1);
}
.strength-icon {
  font-size: 2.5rem;
  color: var(--accent-cyan);
  margin-bottom: 1.5rem;
}
.strength-title {
  font-size: 1.3rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--text-primary);
}
.strength-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Tech Stack Grid */
.tech-stack-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
}
@media (max-width: 600px) {
  .tech-stack-grid {
    grid-template-columns: 1fr;
  }
  .strengths-grid {
    grid-template-columns: 1fr;
  }
}