/* ==========================================================================
   DESIGN SYSTEM & VARIABLES
   ========================================================================== */
:root {
  /* Color Palette */
  --bg-primary: #0a0c10;
  --bg-secondary: #121620;
  --bg-tertiary: #1a1f2c;
  --accent-cyan: #00f2fe;
  --accent-purple: #9d4edd;
  --accent-purple-glow: rgba(157, 78, 221, 0.4);
  --accent-cyan-glow: rgba(0, 242, 254, 0.4);
  --accent-emerald: #00e676;
  
  --accent-cyan-bg: rgba(0, 242, 254, 0.08);
  --accent-cyan-border: rgba(0, 242, 254, 0.2);
  --accent-purple-bg: rgba(157, 78, 221, 0.08);
  --accent-purple-border: rgba(157, 78, 221, 0.2);
  --accent-emerald-bg: rgba(0, 230, 118, 0.08);
  --accent-emerald-border: rgba(0, 230, 118, 0.2);
  
  --text-primary: #f3f4f6;
  --text-secondary: #9ca3af;
  --text-muted: #6b7280;
  
  --card-border: rgba(255, 255, 255, 0.05);
  --card-border-hover: rgba(0, 242, 254, 0.2);
  --glass-bg: rgba(18, 22, 32, 0.7);
  --glass-border: rgba(255, 255, 255, 0.07);
  
  --btn-secondary-bg: rgba(255, 255, 255, 0.03);
  --btn-secondary-hover-bg: rgba(255, 255, 255, 0.08);
  --filter-btn-bg: rgba(255, 255, 255, 0.02);
  --filter-btn-hover-bg: rgba(255, 255, 255, 0.06);
  --tag-bg: rgba(255, 255, 255, 0.03);
  --footer-bg: #06070a;
  --mobile-menu-bg: #0d111a;
  --navbar-scrolled-bg: rgba(10, 12, 16, 0.85);
  --grid-line: rgba(255, 255, 255, 0.015);
  --skills-bg-glow: rgba(157, 78, 221, 0.02);
  
  --shadow-sm: 0 5px 15px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 15px 30px rgba(0, 0, 0, 0.25);
  --shadow-lg: 0 20px 40px rgba(0, 0, 0, 0.4);
  --shadow-xl: 0 30px 60px rgba(0, 0, 0, 0.35);
  --shadow-glow: rgba(0, 242, 254, 0.03);
  
  --accent-text-primary: #050608;
  
  /* Fonts */
  --font-display: 'Space Grotesk', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-sans: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  
  /* Transitions */
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  
  /* Layout */
  --container-max-width: 1200px;
  --navbar-height: 80px;
  
  color-scheme: dark;
}

:root[data-theme="light"] {
  --bg-primary: #f8fafc;
  --bg-secondary: #ffffff;
  --bg-tertiary: #f1f5f9;
  
  --accent-cyan: #0e7490;
  --accent-purple: #6d28d9;
  --accent-purple-glow: rgba(109, 40, 217, 0.15);
  --accent-cyan-glow: rgba(14, 116, 144, 0.15);
  --accent-emerald: #047857;
  
  --accent-cyan-bg: rgba(14, 116, 144, 0.08);
  --accent-cyan-border: rgba(14, 116, 144, 0.2);
  --accent-purple-bg: rgba(109, 40, 217, 0.08);
  --accent-purple-border: rgba(109, 40, 217, 0.2);
  --accent-emerald-bg: rgba(4, 120, 87, 0.08);
  --accent-emerald-border: rgba(4, 120, 87, 0.2);
  
  --text-primary: #0f172a;
  --text-secondary: #334155;
  --text-muted: #64748b;
  
  --card-border: rgba(0, 0, 0, 0.06);
  --card-border-hover: rgba(14, 116, 144, 0.25);
  --glass-bg: rgba(255, 255, 255, 0.75);
  --glass-border: rgba(0, 0, 0, 0.08);
  
  --btn-secondary-bg: rgba(0, 0, 0, 0.03);
  --btn-secondary-hover-bg: rgba(0, 0, 0, 0.08);
  --filter-btn-bg: rgba(0, 0, 0, 0.02);
  --filter-btn-hover-bg: rgba(0, 0, 0, 0.06);
  --tag-bg: rgba(0, 0, 0, 0.03);
  --footer-bg: #f1f5f9;
  --mobile-menu-bg: #ffffff;
  --navbar-scrolled-bg: rgba(255, 255, 255, 0.85);
  --grid-line: rgba(0, 0, 0, 0.03);
  --skills-bg-glow: rgba(109, 40, 217, 0.01);
  
  --shadow-sm: 0 5px 15px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 10px 25px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 15px 35px rgba(0, 0, 0, 0.06);
  --shadow-xl: 0 25px 50px rgba(0, 0, 0, 0.08);
  --shadow-glow: rgba(14, 116, 144, 0.06);
  
  --accent-text-primary: #ffffff;
  
  color-scheme: light;
}



/* ==========================================================================
   RESET & GLOBAL STYLES
   ========================================================================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--navbar-height);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

body {
  overflow-x: hidden;
  background-color: var(--bg-primary);
}

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

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

ul {
  list-style: none;
}

input, textarea, button {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
  background: none;
  border: none;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 10px;
}
::-webkit-scrollbar-track {
  background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
  background: var(--bg-secondary);
  border: 2px solid var(--bg-primary);
  border-radius: 5px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--accent-purple);
}

/* ==========================================================================
   TYPOGRAPHY & UTILITIES
   ========================================================================== */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.2;
}

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

.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 2rem;
}

.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-subtitle {
  font-family: var(--font-mono);
  color: var(--accent-cyan);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  font-size: 0.85rem;
  display: block;
  margin-bottom: 0.5rem;
}

.section-title {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.section-underline {
  height: 4px;
  width: 60px;
  background: linear-gradient(90deg, var(--accent-cyan), var(--accent-purple));
  margin: 0 auto;
  border-radius: 2px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.8rem 1.6rem;
  border-radius: 50px;
  font-family: var(--font-display);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.btn-sm {
  padding: 0.5rem 1.2rem;
  font-size: 0.9rem;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-cyan) 0%, var(--accent-purple) 100%);
  color: var(--accent-text-primary);
  font-weight: 700;
  border: 1px solid transparent;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 20px rgba(0, 242, 254, 0.2);
}

.btn-secondary {
  background: var(--btn-secondary-bg);
  border: 1px solid var(--card-border);
  color: var(--text-primary);
}

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

.btn-glow {
  background: linear-gradient(135deg, var(--accent-cyan) 0%, var(--accent-purple) 100%);
  color: var(--accent-text-primary);
  font-weight: 700;
  box-shadow: 0 0 15px rgba(0, 242, 254, 0.3);
}

.btn-glow:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 25px rgba(0, 242, 254, 0.6), 0 0 10px rgba(157, 78, 221, 0.4);
}

.w-full {
  width: 100%;
}

/* ==========================================================================
   NAVIGATION BAR
   ========================================================================== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--navbar-height);
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--glass-border);
  z-index: 1000;
  transition: all var(--transition-normal);
}

.navbar.scrolled {
  height: 70px;
  background: var(--navbar-scrolled-bg);
  box-shadow: var(--shadow-md);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 2rem;
}

.logo {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

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

.nav-links {
  display: flex;
  gap: 2rem;
}

.nav-link {
  font-weight: 500;
  color: var(--text-secondary);
  font-size: 0.95rem;
  position: relative;
  padding: 0.5rem 0;
}

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

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

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: 1.2rem;
}

/* Theme Toggle Button */
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  color: var(--text-primary);
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: all var(--transition-normal);
}

.theme-toggle:hover {
  transform: scale(1.05);
  border-color: var(--card-border-hover);
  box-shadow: var(--shadow-sm);
  color: var(--accent-cyan);
}

.theme-toggle:active {
  transform: scale(0.95);
}

.theme-toggle svg {
  position: absolute;
  transition: transform var(--transition-normal), opacity var(--transition-normal);
}

/* In Dark mode: Moon is visible, Sun is hidden */
:root:not([data-theme="light"]) .theme-toggle .sun-icon {
  transform: scale(0) rotate(90deg);
  opacity: 0;
}
:root:not([data-theme="light"]) .theme-toggle .moon-icon {
  transform: scale(1) rotate(0deg);
  opacity: 1;
}

/* In Light mode: Sun is visible, Moon is hidden */
:root[data-theme="light"] .theme-toggle .sun-icon {
  transform: scale(1) rotate(0deg);
  opacity: 1;
}
:root[data-theme="light"] .theme-toggle .moon-icon {
  transform: scale(0) rotate(-90deg);
  opacity: 0;
}



.mobile-nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 26px;
  height: 18px;
  cursor: pointer;
}

.mobile-nav-toggle .bar {
  width: 100%;
  height: 2px;
  background-color: var(--text-primary);
  transition: all var(--transition-normal);
}

/* ==========================================================================
   PARALLAX HERO
   ========================================================================== */
.hero-parallax-wrapper {
  position: relative;
  height: 100vh;
  width: 100%;
  overflow: clip;
  view-timeline: --hero-timeline block;
}

.hero-parallax {
  position: relative;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.parallax-layer {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Background Layer */
.layer-bg {
  z-index: 1;
}

.grid-mesh {
  width: 100%;
  height: 100%;
  background-image: 
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 50px 50px;
  background-position: center;
  mask-image: radial-gradient(circle at center, black 30%, transparent 80%);
  -webkit-mask-image: radial-gradient(circle at center, black 30%, transparent 80%);
}

/* Glow Layer */
.layer-glow {
  z-index: 2;
}

.glow-circle {
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.15;
  will-change: transform;
}

.glow-cyan {
  width: 400px;
  height: 400px;
  background-color: var(--accent-cyan);
  top: 20%;
  left: 15%;
  animation: floatGlow 15s ease-in-out infinite alternate;
}

.glow-purple {
  width: 450px;
  height: 450px;
  background-color: var(--accent-purple);
  bottom: 20%;
  right: 15%;
  animation: floatGlow 18s ease-in-out infinite alternate-reverse;
}

/* Content Layer (Interactive items remain clickable) */
.layer-content {
  z-index: 3;
  pointer-events: auto;
}

.hero-text-container {
  max-width: 800px;
  text-align: center;
  padding: 0 2rem;
  margin-top: calc(var(--navbar-height) / 2);
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  background: var(--accent-cyan-bg);
  border: 1px solid var(--accent-cyan-border);
  color: var(--accent-cyan);
  padding: 0.4rem 1rem;
  border-radius: 30px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 2rem;
  box-shadow: var(--shadow-glow);
}

.pulse-dot {
  width: 8px;
  height: 8px;
  background-color: var(--accent-cyan);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--accent-cyan);
  animation: pulse 2s infinite;
}

.hero-title {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 800;
  margin-bottom: 1.5rem;
  letter-spacing: -0.03em;
}

.hero-subtitle {
  font-size: clamp(1.2rem, 3vw, 1.8rem);
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
}

.cursor {
  color: var(--accent-cyan);
  font-weight: 300;
  margin-left: 2px;
  animation: blinkCursor 0.8s infinite;
}

@keyframes blinkCursor {
  50% { opacity: 0; }
}

.hero-description {
  font-size: clamp(1rem, 2.2vw, 1.15rem);
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto 3rem auto;
}

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

/* Foreground Floating Tech elements */
.layer-foreground {
  z-index: 4;
}

.floating-tech-card {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 0.8rem;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  padding: 0.8rem 1.2rem;
  border-radius: 16px;
  font-family: var(--font-display);
  font-weight: 600;
  color: var(--text-primary);
  box-shadow: var(--shadow-lg);
  animation: floatElement 8s ease-in-out infinite alternate;
}

.tech-icon {
  width: 20px;
  height: 20px;
}

.tech-angular {
  top: 25%;
  right: 12%;
  border-color: rgba(221, 0, 49, 0.2);
  animation-duration: 9s;
}

.tech-react {
  bottom: 25%;
  left: 10%;
  border-color: rgba(0, 216, 255, 0.2);
  animation-duration: 7s;
}

.tech-ts {
  top: 55%;
  right: 8%;
  border-color: rgba(49, 120, 198, 0.2);
  animation-duration: 11s;
}

/* Scroll indicator */
.hero-scroll-indicator {
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  z-index: 5;
  opacity: 0.7;
}

.scroll-mouse {
  width: 22px;
  height: 38px;
  border: 2px solid var(--text-muted);
  border-radius: 20px;
  position: relative;
  display: block;
}

.scroll-wheel {
  width: 4px;
  height: 8px;
  background-color: var(--accent-cyan);
  border-radius: 2px;
  position: absolute;
  top: 6px;
  left: 50%;
  transform: translateX(-50%);
  animation: scrollWheel 2s infinite;
}

.scroll-text {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
}

/* Native CSS Parallax Scroll Animations */
@supports ((animation-timeline: view()) and (animation-range: entry)) {
  .layer-bg {
    animation: parallax-bg linear both;
    animation-timeline: --hero-timeline;
    animation-range: exit 0% exit 100%;
  }
  .layer-glow {
    animation: parallax-glow linear both;
    animation-timeline: --hero-timeline;
    animation-range: exit 0% exit 100%;
  }
  .layer-content {
    animation: parallax-content linear both;
    animation-timeline: --hero-timeline;
    animation-range: exit 0% exit 100%;
  }
  .layer-foreground {
    animation: parallax-fg linear both;
    animation-timeline: --hero-timeline;
    animation-range: exit 0% exit 100%;
  }
}

@keyframes parallax-bg {
  to { transform: translateY(220px); }
}
@keyframes parallax-glow {
  to { transform: translateY(140px); }
}
@keyframes parallax-content {
  to { transform: translateY(60px); opacity: 0.3; }
}
@keyframes parallax-fg {
  to { transform: translateY(-90px); }
}

/* ==========================================================================
   SECTIONS GENERAL
   ========================================================================== */
main {
  position: relative;
  background-color: var(--bg-primary);
  z-index: 10;
}

section {
  padding: 8rem 0;
  position: relative;
}

/* ==========================================================================
   ABOUT SECTION
   ========================================================================== */
.section-about {
  background-color: var(--bg-primary);
}

.about-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 5rem;
  align-items: center;
}

/* Avatar Card */
.avatar-glass-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 24px;
  padding: 2.5rem;
  text-align: center;
  position: relative;
  box-shadow: var(--shadow-xl);
  margin-bottom: 2rem;
  overflow: hidden;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.avatar-glass-card::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, var(--accent-purple-bg) 0%, transparent 60%);
  pointer-events: none;
}

.avatar-container {
  width: 180px;
  height: 180px;
  border-radius: 50%;
  overflow: hidden;
  margin: 0 auto 2rem auto;
  border: 3px solid transparent;
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple)) border-box;
  box-shadow: var(--shadow-md);
}

.avatar-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.avatar-info h3 {
  font-size: 1.6rem;
  margin-bottom: 0.3rem;
}

.avatar-info p {
  color: var(--accent-cyan);
  font-family: var(--font-mono);
  font-size: 0.9rem;
  margin-bottom: 1.5rem;
  letter-spacing: 0.05em;
}

.avatar-socials {
  display: flex;
  justify-content: center;
  gap: 1rem;
}

.avatar-socials a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--btn-secondary-bg);
  border: 1px solid var(--card-border);
  color: var(--text-secondary);
}

.avatar-socials a:hover {
  background: var(--text-primary);
  color: var(--bg-primary);
  transform: translateY(-3px);
  box-shadow: var(--shadow-sm);
}

/* Highlights Grid */
.highlights-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.2rem;
}

.highlight-card {
  background: var(--tag-bg);
  border: 1px solid var(--card-border);
  border-radius: 16px;
  padding: 1.2rem 1rem;
  text-align: center;
}

.highlight-number {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 800;
  display: block;
  background: linear-gradient(135deg, var(--accent-cyan) 0%, var(--accent-purple) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.highlight-text {
  font-size: 0.8rem;
  color: var(--text-secondary);
  line-height: 1.2;
  display: block;
  margin-top: 0.3rem;
}

/* Right Content */
.about-greeting {
  font-size: 1.8rem;
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: 2rem;
  letter-spacing: -0.01em;
}

.about-text {
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
}

.bio-details {
  display: grid;
  gap: 1rem;
  margin: 2.5rem 0;
  border-top: 1px solid var(--card-border);
  border-bottom: 1px solid var(--card-border);
  padding: 1.5rem 0;
}

.detail-item {
  display: flex;
  font-size: 0.95rem;
}

.detail-label {
  width: 160px;
  font-weight: 600;
  font-family: var(--font-display);
  color: var(--text-primary);
}

.detail-val {
  color: var(--text-secondary);
  flex: 1;
}

.about-cta-container {
  display: flex;
  gap: 1rem;
}

.btn-icon {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

/* ==========================================================================
   SKILLS SECTION
   ========================================================================== */
.section-skills {
  background-color: var(--bg-secondary);
  background-image: radial-gradient(circle at 10% 20%, var(--skills-bg-glow) 0%, transparent 50%);
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2.5rem;
}

.skills-category-card {
  background: var(--bg-primary);
  border: 1px solid var(--card-border);
  border-radius: 24px;
  padding: 3rem 2.5rem;
  transition: all var(--transition-normal);
  position: relative;
}

.skills-category-card:hover {
  transform: translateY(-5px);
  border-color: var(--card-border-hover);
  box-shadow: var(--shadow-lg);
}

.category-icon-wrapper {
  width: 60px;
  height: 60px;
  border-radius: 16px;
  background: var(--accent-cyan-bg);
  border: 1px solid var(--accent-cyan-border);
  color: var(--accent-cyan);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 2rem;
}

.skills-category-card:nth-child(2) .category-icon-wrapper {
  background: var(--accent-purple-bg);
  border-color: var(--accent-purple-border);
  color: var(--accent-purple);
}

.skills-category-card:nth-child(3) .category-icon-wrapper {
  background: var(--accent-emerald-bg);
  border-color: var(--accent-emerald-border);
  color: var(--accent-emerald);
}

.skills-category-card h3 {
  font-size: 1.5rem;
  margin-bottom: 2rem;
}

.skills-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
}

.skill-tag {
  background: var(--tag-bg);
  border: 1px solid var(--card-border);
  padding: 0.5rem 1rem;
  border-radius: 12px;
  font-size: 0.9rem;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
  cursor: default;
}

.skill-tag:hover {
  color: var(--text-primary);
  background: var(--bg-tertiary);
  border-color: var(--accent-cyan);
  transform: scale(1.05);
}

.skills-category-card:nth-child(2) .skill-tag:hover {
  border-color: var(--accent-purple);
}

.skills-category-card:nth-child(3) .skill-tag:hover {
  border-color: var(--accent-emerald);
}

/* ==========================================================================
   EXPERIENCE SECTION (TIMELINE)
   ========================================================================== */
.section-experience {
  background-color: var(--bg-primary);
}

.timeline {
  position: relative;
  max-width: 900px;
  margin: 0 auto;
}

.timeline::before {
  content: '';
  position: absolute;
  top: 0;
  left: 31px;
  height: 100%;
  width: 2px;
  background: linear-gradient(to bottom, var(--accent-cyan), var(--accent-purple), transparent);
}

.timeline-item {
  position: relative;
  margin-bottom: 5rem;
  padding-left: 80px;
}

.timeline-item:last-child {
  margin-bottom: 0;
}

.timeline-dot {
  position: absolute;
  left: 20px;
  top: 6px;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background-color: var(--bg-primary);
  border: 3px solid var(--accent-cyan);
  box-shadow: 0 0 10px var(--accent-cyan-glow);
  z-index: 2;
  transition: all var(--transition-normal);
}

.timeline-item:nth-child(even) .timeline-dot {
  border-color: var(--accent-purple);
  box-shadow: 0 0 10px var(--accent-purple-glow);
}

.timeline-item:hover .timeline-dot {
  transform: scale(1.3);
  background-color: var(--accent-cyan);
}

.timeline-item:nth-child(even):hover .timeline-dot {
  background-color: var(--accent-purple);
}

.timeline-date {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--accent-cyan);
  margin-bottom: 0.8rem;
  display: block;
}

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

.timeline-content {
  background: var(--bg-secondary);
  border: 1px solid var(--card-border);
  border-radius: 20px;
  padding: 2.5rem;
  transition: all var(--transition-normal);
  box-shadow: var(--shadow-md);
}

.timeline-content:hover {
  transform: translateX(5px);
  border-color: var(--card-border-hover);
  box-shadow: var(--shadow-lg);
}

.timeline-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 0.3rem;
}

.timeline-header h3 {
  font-size: 1.4rem;
}

.timeline-company {
  font-family: var(--font-display);
  font-weight: 600;
  color: var(--text-primary);
  font-size: 1.1rem;
}

.timeline-location {
  display: block;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}

.timeline-bullets {
  display: grid;
  gap: 0.8rem;
}

.timeline-bullets li {
  color: var(--text-secondary);
  font-size: 0.95rem;
  position: relative;
  padding-left: 1.5rem;
}

.timeline-bullets li::before {
  content: "→";
  position: absolute;
  left: 0;
  top: 0;
  color: var(--accent-cyan);
  font-weight: bold;
}

.timeline-item:nth-child(even) .timeline-bullets li::before {
  color: var(--accent-purple);
}

/* ==========================================================================
   PROJECTS SECTION
   ========================================================================== */
.section-projects {
  background-color: var(--bg-secondary);
}

.project-filters {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 4rem;
  flex-wrap: wrap;
}

.filter-btn {
  padding: 0.6rem 1.4rem;
  border-radius: 30px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.9rem;
  background: var(--filter-btn-bg);
  border: 1px solid var(--card-border);
  cursor: pointer;
  transition: all var(--transition-normal);
}

.filter-btn:hover {
  background: var(--filter-btn-hover-bg);
  border-color: var(--text-muted);
}

.filter-btn.active {
  background: linear-gradient(135deg, var(--accent-cyan) 0%, var(--accent-purple) 100%);
  color: var(--accent-text-primary);
  border-color: transparent;
  box-shadow: var(--shadow-sm);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 2.5rem;
}

.project-card {
  background: var(--bg-primary);
  border: 1px solid var(--card-border);
  border-radius: 20px;
  padding: 2.5rem;
  display: flex;
  flex-direction: column;
  height: 100%;
  transition: all var(--transition-normal);
  will-change: transform, opacity;
}

/* Filtering Animations Classes */
.project-card.hide {
  display: none;
}

.project-card:hover {
  transform: translateY(-6px);
  border-color: var(--card-border-hover);
  box-shadow: var(--shadow-lg);
}

.project-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
}

.project-badge {
  background: rgba(157, 78, 221, 0.08);
  border: 1px solid rgba(157, 78, 221, 0.2);
  color: var(--accent-purple);
  padding: 0.3rem 0.8rem;
  border-radius: 30px;
  font-size: 0.75rem;
  font-family: var(--font-mono);
  font-weight: 500;
  text-transform: uppercase;
}

.project-card:nth-child(even) .project-badge {
  background: rgba(0, 242, 254, 0.08);
  border-color: rgba(0, 242, 254, 0.2);
  color: var(--accent-cyan);
}

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

.project-card-body {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.project-title {
  font-size: 1.4rem;
  margin-bottom: 1rem;
}

.project-desc {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 2rem;
  flex-grow: 1;
}

.project-tech-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tech-badge {
  background: var(--bg-secondary);
  border: 1px solid var(--card-border);
  padding: 0.3rem 0.6rem;
  border-radius: 8px;
  font-size: 0.8rem;
  color: var(--text-secondary);
  font-family: var(--font-mono);
}

/* ==========================================================================
   AWARDS & CERTIFICATES SECTION
   ========================================================================== */
.section-awards {
  background-color: var(--bg-primary);
}

.awards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2.5rem;
}

.award-card {
  background: var(--bg-secondary);
  border: 1px solid var(--card-border);
  border-radius: 20px;
  padding: 2.5rem;
  text-align: center;
  transition: all var(--transition-normal);
}

.award-card:hover {
  transform: translateY(-5px);
  border-color: var(--card-border-hover);
  box-shadow: var(--shadow-md);
}

.award-icon-wrapper {
  width: 54px;
  height: 54px;
  border-radius: 50%;
  background: var(--accent-purple-bg);
  border: 1px solid var(--accent-purple-border);
  color: var(--accent-purple);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.5rem auto;
}

.award-card:nth-child(odd) .award-icon-wrapper {
  background: var(--accent-cyan-bg);
  border-color: var(--accent-cyan-border);
  color: var(--accent-cyan);
}

.award-card h3 {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
}

.award-org {
  font-size: 0.9rem;
  color: var(--text-primary);
  display: block;
  font-weight: 500;
  margin-bottom: 0.2rem;
}

.award-date {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
  display: block;
  margin-bottom: 1.2rem;
}

.award-card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

/* ==========================================================================
   CONTACT SECTION
   ========================================================================== */
.section-contact {
  background-color: var(--bg-secondary);
}

.contact-layout {
  max-width: 600px;
  margin: 0 auto;
}

/* Left panel info */
.contact-info-panel h3 {
  font-size: 1.8rem;
  margin-bottom: 1rem;
}

.contact-info-panel p {
  color: var(--text-secondary);
  margin-bottom: 3rem;
}

.contact-methods {
  display: grid;
  gap: 1.5rem;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  padding: 1.5rem;
  background: var(--bg-primary);
  border: 1px solid var(--card-border);
  border-radius: 16px;
  position: relative;
  cursor: default;
}

.contact-item.card-hover {
  cursor: pointer;
}

.contact-icon {
  width: 50px;
  height: 50px;
  border-radius: 12px;
  background: var(--accent-cyan-bg);
  border: 1px solid var(--accent-cyan-border);
  color: var(--accent-cyan);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-normal);
}

.contact-item:nth-child(2) .contact-icon {
  background: var(--accent-purple-bg);
  border-color: var(--accent-purple-border);
  color: var(--accent-purple);
}

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

.contact-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.2rem;
}

.contact-value {
  font-size: 1.05rem;
  font-weight: 600;
  font-family: var(--font-display);
}

.copy-hint, .external-link-icon {
  position: absolute;
  right: 1.5rem;
  color: var(--text-muted);
  opacity: 0;
  transition: all var(--transition-normal);
}

.contact-item:hover .copy-hint,
.contact-item:hover .external-link-icon {
  opacity: 1;
}

.contact-item:hover .contact-icon {
  transform: scale(1.08);
}

/* Contact form panel */
.contact-form-panel {
  background: var(--bg-primary);
  border: 1px solid var(--card-border);
  border-radius: 24px;
  padding: 3.5rem;
  box-shadow: var(--shadow-lg);
}

.contact-form-panel h3 {
  font-size: 1.6rem;
  margin-bottom: 0.5rem;
}

.contact-form-panel p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 2.5rem;
}

.contact-form {
  display: grid;
  gap: 1.8rem;
}

.form-group-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.8rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.form-group label {
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-primary);
}

.form-group input,
.form-group textarea {
  background: var(--bg-secondary);
  border: 1px solid var(--card-border);
  padding: 1rem 1.2rem;
  border-radius: 12px;
  transition: all var(--transition-normal);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent-cyan);
  box-shadow: 0 0 10px rgba(0, 242, 254, 0.15);
  background: var(--bg-tertiary);
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
footer {
  background-color: var(--footer-bg);
  border-top: 1px solid var(--card-border);
  padding: 5rem 0;
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.footer-container {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1.2fr;
  gap: 4rem;
  align-items: flex-start;
}

.footer-brand h4 {
  font-size: 1.2rem;
  margin-bottom: 1rem;
}

.footer-brand p {
  margin-top: 1rem;
  color: var(--text-muted);
  max-width: 300px;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.footer-links h4 {
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.footer-links a:hover {
  color: var(--accent-cyan);
}

.footer-meta h4 {
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.footer-credits {
  margin-top: 1rem;
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* ==========================================================================
   TOAST NOTIFICATIONS
   ========================================================================== */
.toast-container {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 10000;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  pointer-events: none;
}

.toast {
  background: var(--bg-secondary);
  border: 1px solid var(--accent-cyan);
  color: var(--text-primary);
  padding: 1rem 1.8rem;
  border-radius: 12px;
  box-shadow: var(--shadow-md);
  display: flex;
  align-items: center;
  gap: 0.8rem;
  min-width: 250px;
  pointer-events: auto;
  animation: slideIn 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
}

.toast-success {
  border-color: var(--accent-cyan);
}

/* ==========================================================================
   KEYFRAME ANIMATIONS
   ========================================================================== */
@keyframes floatGlow {
  0% { transform: translateY(0) scale(1); }
  100% { transform: translateY(-30px) scale(1.1); }
}

@keyframes pulse {
  0% { transform: scale(0.9); box-shadow: 0 0 0 0 var(--accent-cyan-glow); }
  70% { transform: scale(1); box-shadow: 0 0 0 10px rgba(0, 242, 254, 0); }
  100% { transform: scale(0.9); box-shadow: 0 0 0 0 rgba(0, 242, 254, 0); }
}

@keyframes floatElement {
  0% { transform: translateY(0px) rotate(0deg); }
  100% { transform: translateY(-15px) rotate(3deg); }
}

@keyframes scrollWheel {
  0% { opacity: 1; transform: translate(-50%, 0); }
  50% { opacity: 0.3; transform: translate(-50%, 14px); }
  100% { opacity: 1; transform: translate(-50%, 0); }
}

@keyframes slideIn {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

@keyframes fadeOut {
  to { opacity: 0; transform: translateY(10px); }
}

/* Scroll-driven entry effect fallback animations */
.reveal-on-scroll {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s cubic-bezier(0.2, 0.8, 0.2, 1), 
              transform 0.8s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.reveal-on-scroll.revealed {
  opacity: 1;
  transform: translateY(0);
}

/* ==========================================================================
   ACCESSIBILITY: REDUCED MOTION PREFERENCES
   ========================================================================== */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  
  .glow-circle,
  .floating-tech-card,
  .scroll-wheel,
  .pulse-dot {
    animation: none !important;
  }
  
  .parallax-layer {
    animation: none !important;
    transform: none !important;
  }
  
  .reveal-on-scroll {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
  
  .project-card, .skills-category-card, .timeline-content, .btn, .avatar-socials a, .contact-item {
    transition: none !important;
  }
}

/* ==========================================================================
   RESPONSIVE DESIGN (MEDIA QUERIES)
   ========================================================================== */
@media (max-width: 1024px) {
  .about-grid {
    grid-template-columns: 1fr;
    gap: 4rem;
  }
  

}

@media (max-width: 768px) {
  section {
    padding: 5rem 0;
  }
  
  .hero-buttons {
    flex-direction: column;
    align-items: center;
    gap: 1rem;
  }
  
  .btn {
    width: 100%;
    max-width: 300px;
  }
  
  /* Mobile Menu */
  .mobile-nav-toggle {
    display: flex;
    z-index: 1001;
  }
  
  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--mobile-menu-bg);
    border-left: 1px solid var(--glass-border);
    flex-direction: column;
    padding: 100px 30px;
    transition: right var(--transition-normal);
    z-index: 1000;
  }
  
  .nav-links.active {
    right: 0;
  }
  
  .mobile-nav-toggle.active .bar:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
  }
  
  .mobile-nav-toggle.active .bar:nth-child(2) {
    opacity: 0;
  }
  
  .mobile-nav-toggle.active .bar:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
  }
  
  .timeline::before {
    left: 20px;
  }
  
  .timeline-item {
    padding-left: 45px;
  }
  
  .timeline-dot {
    left: 9px;
    top: 4px;
    width: 20px;
    height: 20px;
  }
  
  .timeline-header {
    flex-direction: column;
    gap: 0.2rem;
  }
  
  .form-group-row {
    grid-template-columns: 1fr;
    gap: 1.8rem;
  }
  
  .footer-container {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  
  /* Disable absolute floating elements on mobile for readability */
  .floating-tech-card {
    display: none !important;
  }
}

/* ==========================================================================
   INTERACTIVE CANVAS BACKDROP
   ========================================================================== */
#hero-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
}

/* ==========================================================================
   CUSTOM LIQUID CURSOR
   ========================================================================== */
.custom-cursor {
  width: 20px;
  height: 20px;
  background-color: var(--accent-cyan);
  border-radius: 50%;
  position: fixed;
  top: 0;
  left: 0;
  pointer-events: none;
  z-index: 99999;
  mix-blend-mode: difference;
  transition: width 0.3s cubic-bezier(0.25, 1, 0.5, 1), 
              height 0.3s cubic-bezier(0.25, 1, 0.5, 1), 
              background-color 0.3s, 
              border 0.3s, 
              opacity 0.3s ease;
  transform: translate(-50%, -50%);
  opacity: 0;
  box-shadow: 0 0 10px rgba(0, 242, 254, 0.1);
}

.custom-cursor.hovered {
  width: 50px;
  height: 50px;
  background-color: transparent;
  border: 2px solid var(--accent-cyan);
  box-shadow: 0 0 20px rgba(0, 242, 254, 0.3);
}

.custom-cursor.active {
  opacity: 1;
}

/* Hide default cursor on desktop devices with hover support */
@media (pointer: fine) {
  body {
    cursor: none;
  }
  a, button, [role="button"], .project-card, .skills-category-card, .award-card, .contact-item, .theme-toggle, .mobile-nav-toggle {
    cursor: none;
  }
}

/* ==========================================================================
   VIEW TRANSITIONS THEME TOGGLE
   ========================================================================== */
::view-transition-active(root) {
  pointer-events: none;
}
::view-transition-old(root),
::view-transition-new(root) {
  animation: none;
  mix-blend-mode: normal;
}