/* ==========================================================================
   AMAL K DEV - PORTFOLIO DESIGN SYSTEM
   Modern Dark-Mode, Glassmorphism, Neon Accents, Ultra-Responsive
   ========================================================================== */

:root {
  /* Color Palette */
  --bg-primary: #080c14;
  --bg-secondary: #0f1626;
  --bg-surface: #141d30;
  --bg-card: rgba(18, 26, 43, 0.72);
  --bg-card-hover: rgba(24, 35, 58, 0.88);
  --bg-glass: rgba(15, 23, 42, 0.65);
  
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-medium: rgba(255, 255, 255, 0.16);
  --border-cyan: rgba(6, 182, 212, 0.4);
  --border-violet: rgba(139, 92, 246, 0.4);

  /* Brand Accents */
  --cyan: #06b6d4;
  --cyan-light: #67e8f9;
  --cyan-glow: rgba(6, 182, 212, 0.35);
  --violet: #8b5cf6;
  --violet-light: #c4b5fd;
  --violet-glow: rgba(139, 92, 246, 0.35);
  --emerald: #10b981;
  --emerald-glow: rgba(16, 185, 129, 0.35);
  --amber: #f59e0b;
  --rose: #f43f5e;

  /* Text Colors */
  --text-primary: #f8fafc;
  --text-secondary: #cbd5e1;
  --text-muted: #94a3b8;
  --text-dim: #64748b;

  /* Typography */
  --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  /* Layout & Spacing */
  --container-max: 1240px;
  --header-height: 76px;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 20px);
  color-scheme: dark;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.65;
  overflow-x: hidden;
  position: relative;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Canvas Background */
#network-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 0;
  pointer-events: none;
  opacity: 0.7;
}

/* Ambient Radial Glows */
.ambient-glow-1 {
  position: fixed;
  top: -150px;
  right: -100px;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(6, 182, 212, 0.15) 0%, transparent 70%);
  z-index: 0;
  pointer-events: none;
  filter: blur(60px);
}

.ambient-glow-2 {
  position: fixed;
  bottom: 5%;
  left: -150px;
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, rgba(139, 92, 246, 0.12) 0%, transparent 70%);
  z-index: 0;
  pointer-events: none;
  filter: blur(80px);
}

/* Container */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

/* Typography Helpers */
h1, h2, h3, h4, h5, h6 {
  color: var(--text-primary);
  font-weight: 700;
  line-height: 1.25;
}

p {
  color: var(--text-secondary);
}

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

.gradient-text {
  background: linear-gradient(135deg, #ffffff 10%, var(--cyan-light) 60%, var(--violet-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

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

/* Section Header */
.section-header {
  text-align: center;
  margin-bottom: 56px;
  position: relative;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: rgba(6, 182, 212, 0.1);
  border: 1px solid rgba(6, 182, 212, 0.3);
  border-radius: var(--radius-full);
  color: var(--cyan-light);
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: 14px;
}

.section-tag svg {
  width: 14px;
  height: 14px;
}

.section-title {
  font-size: clamp(2rem, 3.5vw, 2.75rem);
  font-weight: 800;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.section-subtitle {
  max-width: 680px;
  margin: 0 auto;
  font-size: 1.1rem;
  color: var(--text-muted);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 12px 24px;
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-base);
  border: 1px solid transparent;
  outline: none;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, #06b6d4 0%, #3b82f6 50%, #8b5cf6 100%);
  color: #ffffff;
  box-shadow: 0 4px 20px var(--cyan-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(6, 182, 212, 0.5);
}

.btn-secondary {
  background: var(--bg-card);
  color: var(--text-primary);
  border-color: var(--border-medium);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  border-color: var(--cyan);
  background: var(--bg-card-hover);
  color: var(--cyan-light);
  transform: translateY(-2px);
}

.btn-sm {
  padding: 8px 16px;
  font-size: 0.875rem;
  border-radius: var(--radius-sm);
}

.btn-icon {
  width: 42px;
  height: 42px;
  padding: 0;
  border-radius: var(--radius-md);
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.btn-icon:hover {
  color: var(--cyan);
  border-color: var(--cyan);
  transform: translateY(-2px);
}

/* ==========================================================================
   NAVIGATION BAR
   ========================================================================== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  z-index: 1000;
  background: rgba(8, 12, 20, 0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-subtle);
  transition: all var(--transition-base);
}

.navbar.scrolled {
  background: rgba(8, 12, 20, 0.95);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
  border-bottom-color: rgba(6, 182, 212, 0.2);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
  font-size: 1.3rem;
  color: #fff;
  letter-spacing: -0.02em;
}

.brand-badge {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--cyan), var(--violet));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 800;
  font-size: 1rem;
  box-shadow: 0 0 16px var(--cyan-glow);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
  padding: 6px 0;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--violet));
  transition: width var(--transition-base);
  border-radius: 2px;
}

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

.nav-link:hover::after, .nav-link.active::after {
  width: 100%;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1.5rem;
  cursor: pointer;
}

/* ==========================================================================
   HERO SECTION
   ========================================================================== */
.hero {
  min-height: 100vh;
  padding-top: calc(var(--header-height) + 50px);
  padding-bottom: 70px;
  display: flex;
  align-items: center;
  position: relative;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 60px;
  align-items: center;
}

.hero-content {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 18px;
  background: rgba(16, 185, 129, 0.12);
  border: 1px solid rgba(16, 185, 129, 0.35);
  border-radius: var(--radius-full);
  margin-bottom: 24px;
}

.status-pulse {
  width: 9px;
  height: 9px;
  background-color: var(--emerald);
  border-radius: 50%;
  position: relative;
}

.status-pulse::after {
  content: '';
  position: absolute;
  top: -4px;
  left: -4px;
  width: 17px;
  height: 17px;
  border-radius: 50%;
  background: rgba(16, 185, 129, 0.5);
  animation: pulseAnimation 2s infinite;
}

@keyframes pulseAnimation {
  0% { transform: scale(0.8); opacity: 0.8; }
  100% { transform: scale(2.2); opacity: 0; }
}

.status-text {
  font-size: 0.88rem;
  font-weight: 600;
  color: #34d399;
}

.hero-title {
  font-size: clamp(2.4rem, 5vw, 3.8rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 16px;
  letter-spacing: -0.03em;
}

.hero-typing-wrap {
  display: flex;
  align-items: center;
  font-size: clamp(1.15rem, 2.2vw, 1.45rem);
  font-weight: 600;
  color: var(--cyan-light);
  margin-bottom: 20px;
  min-height: 38px;
  font-family: var(--font-mono);
}

.typing-cursor {
  display: inline-block;
  width: 2px;
  height: 1.2em;
  background-color: var(--cyan);
  margin-left: 6px;
  animation: blink 1s infinite;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

.hero-desc {
  font-size: 1.12rem;
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 32px;
  max-width: 600px;
}

.hero-ctas {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 36px;
}

/* Quick Contact Chips in Hero */
.contact-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.contact-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
  cursor: pointer;
  user-select: none;
}

.contact-chip:hover {
  background: var(--bg-card-hover);
  border-color: var(--cyan);
  color: var(--text-primary);
  transform: translateY(-2px);
}

.contact-chip .chip-copy-icon {
  opacity: 0.6;
  font-size: 0.75rem;
  transition: opacity var(--transition-fast);
}

.contact-chip:hover .chip-copy-icon {
  opacity: 1;
  color: var(--cyan);
}

/* Hero Avatar & Visual Card */
.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.avatar-wrapper {
  position: relative;
  width: 340px;
  height: 340px;
  border-radius: 36px;
  padding: 6px;
  background: linear-gradient(135deg, var(--cyan), rgba(139, 92, 246, 0.4), var(--emerald));
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.6), 0 0 35px var(--cyan-glow);
  transition: transform var(--transition-smooth);
}

.avatar-wrapper:hover {
  transform: translateY(-6px) scale(1.02);
}

.avatar-inner {
  width: 100%;
  height: 100%;
  border-radius: 30px;
  overflow: hidden;
  background: var(--bg-surface);
  position: relative;
}

.avatar-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
}

/* Floating Tech Chips */
.floating-chip {
  position: absolute;
  padding: 10px 16px;
  background: rgba(18, 26, 43, 0.88);
  border: 1px solid rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(16px);
  border-radius: var(--radius-md);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
  display: flex;
  align-items: center;
  gap: 10px;
  z-index: 2;
  animation: floatChip 4s ease-in-out infinite alternate;
}

.floating-chip-1 {
  top: -20px;
  right: -20px;
  animation-delay: 0s;
}

.floating-chip-2 {
  bottom: -20px;
  left: -25px;
  animation-delay: 1.5s;
}

.floating-chip-3 {
  bottom: 60px;
  right: -30px;
  animation-delay: 2.5s;
}

@keyframes floatChip {
  0% { transform: translateY(0); }
  100% { transform: translateY(-10px); }
}

.chip-icon {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 0.85rem;
}

.chip-icon.angular {
  background: rgba(221, 0, 49, 0.2);
  color: #f87171;
  border: 1px solid rgba(221, 0, 49, 0.4);
}

.chip-icon.dotnet {
  background: rgba(81, 43, 212, 0.2);
  color: #a78bfa;
  border: 1px solid rgba(81, 43, 212, 0.4);
}

.chip-icon.digitaltwin {
  background: rgba(6, 182, 212, 0.2);
  color: #38bdf8;
  border: 1px solid rgba(6, 182, 212, 0.4);
}

.chip-content {
  display: flex;
  flex-direction: column;
}

.chip-title {
  font-size: 0.85rem;
  font-weight: 700;
  color: #ffffff;
}

.chip-subtitle {
  font-size: 0.72rem;
  color: var(--text-muted);
}

/* ==========================================================================
   METRICS & STATS BAR
   ========================================================================== */
.stats-section {
  padding: 40px 0;
  position: relative;
  z-index: 1;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  backdrop-filter: blur(12px);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.stat-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--cyan), transparent);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.stat-card:hover {
  transform: translateY(-4px);
  border-color: var(--cyan);
  background: var(--bg-card-hover);
}

.stat-card:hover::before {
  opacity: 1;
}

.stat-number {
  font-size: clamp(2.2rem, 3vw, 2.8rem);
  font-weight: 800;
  font-family: var(--font-mono);
  background: linear-gradient(135deg, #ffffff, var(--cyan-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 4px;
}

.stat-label {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.stat-sublabel {
  font-size: 0.78rem;
  color: var(--text-dim);
  margin-top: 4px;
}

/* ==========================================================================
   EXPERIENCE TIMELINE
   ========================================================================== */
.experience-section {
  padding: 100px 0;
  position: relative;
}

.timeline {
  position: relative;
  max-width: 960px;
  margin: 0 auto;
  padding: 20px 0;
}

.timeline::before {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  left: 30px;
  width: 2px;
  background: linear-gradient(180deg, var(--cyan) 0%, var(--violet) 50%, rgba(255, 255, 255, 0.05) 100%);
}

.timeline-item {
  position: relative;
  margin-bottom: 50px;
  padding-left: 80px;
}

.timeline-marker {
  position: absolute;
  left: 17px;
  top: 24px;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--bg-primary);
  border: 3px solid var(--cyan);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 15px var(--cyan-glow);
  z-index: 2;
  transition: all var(--transition-fast);
}

.timeline-item:hover .timeline-marker {
  transform: scale(1.2);
  border-color: var(--violet);
  box-shadow: 0 0 20px var(--violet-glow);
}

.timeline-marker-inner {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: #ffffff;
}

.timeline-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 32px;
  backdrop-filter: blur(14px);
  transition: all var(--transition-base);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.timeline-card:hover {
  border-color: var(--border-cyan);
  background: var(--bg-card-hover);
  transform: translateX(6px);
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.4);
}

.timeline-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 16px;
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 16px;
}

.timeline-role {
  font-size: 1.35rem;
  font-weight: 700;
  color: #ffffff;
  display: flex;
  align-items: center;
  gap: 10px;
}

.timeline-company {
  font-size: 1.05rem;
  color: var(--cyan);
  font-weight: 600;
  margin-top: 4px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.timeline-badge {
  display: inline-block;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
}

.badge-current {
  background: rgba(16, 185, 129, 0.2);
  color: #34d399;
  border: 1px solid rgba(16, 185, 129, 0.4);
}

.timeline-tenure {
  font-family: var(--font-mono);
  font-size: 0.88rem;
  color: var(--text-muted);
  background: rgba(255, 255, 255, 0.05);
  padding: 6px 14px;
  border-radius: var(--radius-full);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.timeline-summary {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 18px;
}

.timeline-bullets {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 22px;
}

.timeline-bullets li {
  position: relative;
  padding-left: 24px;
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.timeline-bullets li::before {
  content: '▹';
  position: absolute;
  left: 0;
  top: 0;
  color: var(--cyan);
  font-size: 1.1rem;
  line-height: 1.4;
}

.tech-tag-group {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tech-tag {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  padding: 4px 10px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle);
  border-radius: 6px;
  color: var(--cyan-light);
  transition: all var(--transition-fast);
}

.tech-tag:hover {
  background: rgba(6, 182, 212, 0.15);
  border-color: var(--cyan);
  color: #ffffff;
}

/* ==========================================================================
   FEATURED PROJECTS SHOWCASE
   ========================================================================== */
.projects-section {
  padding: 100px 0;
  position: relative;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  overflow: hidden;
  backdrop-filter: blur(14px);
  transition: all var(--transition-base);
  display: flex;
  flex-direction: column;
  position: relative;
}

.project-card:hover {
  transform: translateY(-8px);
  border-color: var(--border-cyan);
  box-shadow: 0 20px 45px rgba(0, 0, 0, 0.5), 0 0 25px rgba(6, 182, 212, 0.15);
}

.project-preview {
  position: relative;
  width: 100%;
  height: 220px;
  overflow: hidden;
  background: #0a0f1d;
}

.project-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-smooth);
}

.project-card:hover .project-img {
  transform: scale(1.05);
}

.project-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(180deg, transparent 40%, rgba(8, 12, 20, 0.95) 100%);
}

.project-category-tag {
  position: absolute;
  top: 16px;
  left: 16px;
  padding: 5px 12px;
  background: rgba(8, 12, 20, 0.85);
  border: 1px solid rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(8px);
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--cyan-light);
  letter-spacing: 0.5px;
}

.project-body {
  padding: 28px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.project-title {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: #ffffff;
}

.project-client {
  font-size: 0.88rem;
  color: var(--cyan);
  font-weight: 600;
  margin-bottom: 14px;
}

.project-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 20px;
  flex-grow: 1;
}

.project-highlights {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 22px;
}

.project-highlights li {
  position: relative;
  padding-left: 20px;
  font-size: 0.88rem;
  color: var(--text-muted);
}

.project-highlights li::before {
  content: '✓';
  position: absolute;
  left: 0;
  top: 0;
  color: var(--emerald);
  font-weight: bold;
}

.project-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--border-subtle);
  padding-top: 18px;
  margin-top: auto;
}

/* ==========================================================================
   SKILLS & MATRIX SECTION
   ========================================================================== */
.skills-section {
  padding: 100px 0;
  position: relative;
}

.skills-filter {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 48px;
}

.filter-btn {
  padding: 8px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  color: var(--text-muted);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.filter-btn:hover, .filter-btn.active {
  background: linear-gradient(135deg, rgba(6, 182, 212, 0.2), rgba(139, 92, 246, 0.2));
  border-color: var(--cyan);
  color: #ffffff;
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}

.skill-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 22px;
  backdrop-filter: blur(10px);
  transition: all var(--transition-base);
  display: flex;
  flex-direction: column;
}

.skill-card:hover {
  border-color: var(--cyan);
  transform: translateY(-4px);
  background: var(--bg-card-hover);
}

.skill-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 14px;
}

.skill-icon-box {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  color: var(--cyan);
}

.skill-name {
  font-size: 1.05rem;
  font-weight: 700;
  color: #ffffff;
}

.skill-meta {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.skill-bar-wrap {
  width: 100%;
  height: 6px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 4px;
  overflow: hidden;
  margin-bottom: 12px;
}

.skill-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--cyan), var(--violet));
  border-radius: 4px;
  transition: width 1s ease;
}

.skill-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* ==========================================================================
   EDUCATION & PERSONAL
   ========================================================================== */
.education-section {
  padding: 90px 0;
  position: relative;
}

.edu-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 40px;
}

.edu-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: 32px;
  backdrop-filter: blur(12px);
  margin-bottom: 24px;
  transition: all var(--transition-base);
}

.edu-card:hover {
  border-color: var(--cyan);
  transform: translateY(-3px);
}

.edu-degree {
  font-size: 1.3rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 4px;
}

.edu-college {
  font-size: 1rem;
  color: var(--cyan);
  font-weight: 600;
  margin-bottom: 6px;
}

.edu-details {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.personal-box {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: 32px;
  backdrop-filter: blur(12px);
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.personal-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 14px;
}

.personal-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.personal-label {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-dim);
}

.personal-value {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
}

/* ==========================================================================
   CONTACT SECTION
   ========================================================================== */
.contact-section {
  padding: 100px 0;
  position: relative;
}

.contact-wrapper {
  background: linear-gradient(135deg, rgba(15, 22, 38, 0.9), rgba(20, 29, 48, 0.7));
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-xl);
  padding: 60px 48px;
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(20px);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 50px;
}

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

.contact-title {
  font-size: 2.2rem;
  font-weight: 800;
  margin-bottom: 16px;
  line-height: 1.2;
}

.contact-subtitle {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 32px;
}

.contact-details-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-bottom: 36px;
}

.contact-detail-item {
  display: flex;
  align-items: center;
  gap: 16px;
}

.contact-icon-circle {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  background: rgba(6, 182, 212, 0.1);
  border: 1px solid rgba(6, 182, 212, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--cyan);
  font-size: 1.25rem;
  flex-shrink: 0;
}

.contact-detail-text h4 {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-muted);
}

.contact-detail-text a, .contact-detail-text span {
  font-size: 1.05rem;
  font-weight: 600;
  color: #ffffff;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-label {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.form-control {
  width: 100%;
  padding: 14px 18px;
  background: rgba(8, 12, 20, 0.7);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  color: #ffffff;
  font-size: 0.95rem;
  font-family: inherit;
  transition: all var(--transition-fast);
  outline: none;
}

.form-control:focus {
  border-color: var(--cyan);
  box-shadow: 0 0 16px rgba(6, 182, 212, 0.25);
  background: rgba(8, 12, 20, 0.9);
}

textarea.form-control {
  min-height: 130px;
  resize: vertical;
}

/* ==========================================================================
   MODALS
   ========================================================================== */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(4, 7, 13, 0.85);
  backdrop-filter: blur(16px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal-container {
  background: #0d1424;
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-xl);
  width: 100%;
  max-width: 820px;
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.8);
  transform: scale(0.95) translateY(20px);
  transition: all var(--transition-base);
}

.modal-overlay.active .modal-container {
  transform: scale(1) translateY(0);
}

.modal-close-btn {
  position: absolute;
  top: 20px;
  right: 20px;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  border: none;
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 10;
  transition: background var(--transition-fast);
}

.modal-close-btn:hover {
  background: rgba(255, 255, 255, 0.2);
}

.modal-content {
  padding: 40px;
}

/* ==========================================================================
   TOAST NOTIFICATION
   ========================================================================== */
.toast-container {
  position: fixed;
  bottom: 30px;
  right: 30px;
  z-index: 3000;
  display: flex;
  flex-direction: column;
  gap: 12px;
  pointer-events: none;
}

.toast {
  padding: 14px 22px;
  background: rgba(15, 23, 42, 0.95);
  border: 1px solid var(--border-cyan);
  border-radius: var(--radius-md);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.6);
  color: #ffffff;
  font-size: 0.92rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 12px;
  backdrop-filter: blur(12px);
  transform: translateY(20px);
  opacity: 0;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.toast.show {
  transform: translateY(0);
  opacity: 1;
}

.toast-icon {
  color: var(--emerald);
  font-size: 1.2rem;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.footer {
  border-top: 1px solid var(--border-subtle);
  background: rgba(6, 9, 15, 0.95);
  padding: 40px 0;
  position: relative;
  z-index: 1;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
}

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

.footer-links {
  display: flex;
  gap: 24px;
  list-style: none;
}

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

.footer-link:hover {
  color: var(--cyan);
}

/* ==========================================================================
   RESPONSIVE MEDIA QUERIES
   ========================================================================== */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 50px;
    text-align: center;
  }

  .hero-content {
    align-items: center;
  }

  .hero-desc {
    margin-left: auto;
    margin-right: auto;
  }

  .hero-ctas {
    justify-content: center;
  }

  .contact-chips {
    justify-content: center;
  }

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

  .projects-grid {
    grid-template-columns: 1fr;
  }

  .contact-grid {
    grid-template-columns: 1fr;
  }

  .edu-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: var(--header-height);
    left: 0;
    width: 100%;
    background: rgba(8, 12, 20, 0.98);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-subtle);
    flex-direction: column;
    padding: 24px;
    gap: 18px;
  }

  .nav-links.open {
    display: flex;
  }

  .menu-toggle {
    display: block;
  }

  .timeline::before {
    left: 15px;
  }

  .timeline-item {
    padding-left: 45px;
  }

  .timeline-marker {
    left: 4px;
    width: 24px;
    height: 24px;
  }

  .timeline-card {
    padding: 22px;
  }

  .contact-wrapper {
    padding: 32px 20px;
  }

  .avatar-wrapper {
    width: 280px;
    height: 280px;
  }

  .floating-chip {
    display: none;
  }
}

@media (max-width: 480px) {
  .stats-grid {
    grid-template-columns: 1fr;
  }

  .hero-title {
    font-size: 2.1rem;
  }

  .timeline-card-header {
    flex-direction: column;
    align-items: flex-start;
  }
}