:root {
  
  --color-primary-deep-blue: #000033;
  --color-primary-blue: #000066;
  --color-secondary-purple: #6600CC;
  --color-accent-purple: #9933FF;
  --color-neon-green: #33FF33;
  --color-bright-green: #00FF00;
  --color-white: #FFFFFF;
  --color-silver: #E0E0E0; 
  --color-dark-bg: #0a0a0a;
  --color-light-bg: #f8f9fa;

  --glass-bg: rgba(255, 255, 255, 0.1);
  --glass-backdrop: blur(10px);
  --glass-border: 1px solid rgba(255, 255, 255, 0.2);

  --font-heading: 'Montserrat', sans-serif;
  --font-body: 'Inter', sans-serif;
  --font-code: 'Fira Code', monospace;
  --font-size-base: 1rem;
  --font-size-heading-xl: clamp(2rem, 5vw, 3.5rem);
  --font-size-heading-lg: clamp(1.5rem, 4vw, 2.5rem);
  --font-size-heading-md: clamp(1.25rem, 3vw, 1.75rem);
  --font-size-body: 1rem;
  --line-height-base: 1.6;

  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 3rem;
  --spacing-xl: 4rem;
  --border-radius: 0.5rem;
  --shadow-glow: 0 0 20px rgba(51, 255, 51, 0.3);
  --shadow-neon: 0 0 15px rgba(153, 51, 255, 0.2);
  --transition-fast: 0.2s ease-in-out;
  --transition-smooth: 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

html {
  scroll-behavior: smooth;
  font-size: var(--font-size-base);
  line-height: var(--line-height-base);
}

body {
  font-family: var(--font-body);
  color: var(--color-white);
  background-color: var(--color-dark-bg);
  overflow-x: hidden;
  opacity: 1 !important;
  visibility: visible !important;
}

[data-aos],
.menu-item,
.card,
.content-block,
.navbar,
.hero,
.portfolio-grid,
.testimonial-slider {
  opacity: 1 !important;
  visibility: visible !important;
  display: block !important;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--color-white);
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
}

h1 { 
  font-size: var(--font-size-heading-xl);
}
h2 { 
  font-size: var(--font-size-heading-lg);
}
h3 { 
  font-size: var(--font-size-heading-md);
}

p, ul, ol {
  color: var(--color-silver);
  margin-bottom: var(--spacing-md);
}

code {
  font-family: var(--font-code);
  background: rgba(0, 0, 0, 0.5);
  padding: 0.2rem 0.4rem;
  border-radius: var(--border-radius);
  color: var(--color-neon-green);
}

.container {
  max-width: 1200px;
  padding: 0 var(--spacing-sm);
}

.gl-hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-primary-deep-blue) 0%, var(--color-secondary-purple) 50%, var(--color-neon-green) 100%);
  overflow: hidden;
  text-align: center;
  color: var(--color-white);
}

.gl-hero::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  z-index: 1;
}

.gl-hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="%23C0C0C0" stroke-width="0.5" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>') repeat;
  opacity: 0.1;
  animation: gl-circuit-flow 20s linear infinite;
  z-index: 1;
}

@keyframes gl-circuit-flow {
  0% { transform: translateX(0); }
  100% { transform: translateX(-10px); }
}

.gl-hero-content {
  z-index: 2;
  max-width: 800px;
  padding: var(--spacing-lg);
  position: relative;
  background: rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(10px);
  border-radius: var(--border-radius);
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
}

.gl-hero h1 {
  text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.8), 0 0 20px var(--color-neon-green), 0 0 30px var(--color-neon-green);
  animation: gl-glow-pulse 2s ease-in-out infinite alternate;
  color: var(--color-white);
  font-weight: 800;
  letter-spacing: -0.02em;
}

.gl-hero h1.display-3,
.gl-hero h1.display-4,
.gl-hero h1.display-5 {
  text-shadow: 2px 2px 12px rgba(0, 0, 0, 0.9), 0 0 25px var(--color-neon-green), 0 0 40px var(--color-neon-green);
}

.gl-hero p,
.gl-hero .lead {
  color: var(--color-white);
  text-shadow: 1px 1px 6px rgba(0, 0, 0, 0.8), 0 0 10px rgba(0, 0, 0, 0.5);
  font-weight: 400;
  line-height: 1.8;
}

.gl-hero .lead {
  font-size: 1.25rem;
  font-weight: 300;
}

.gl-hero .btn-custom {
  background: linear-gradient(135deg, var(--color-secondary-purple), var(--color-neon-green));
  border: 2px solid var(--color-neon-green);
  color: var(--color-white);
  text-shadow: 1px 1px 4px rgba(0, 0, 0, 0.8);
  box-shadow: 0 4px 20px rgba(51, 255, 51, 0.4), 0 0 30px rgba(153, 51, 255, 0.3);
  font-weight: 700;
  padding: 1rem 2.5rem;
  font-size: 1.1rem;
}

.gl-hero .btn-custom:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 30px rgba(51, 255, 51, 0.6), 0 0 40px rgba(153, 51, 255, 0.5);
  border-color: var(--color-bright-green);
}

.gl-hero a:not(.btn-custom) {
  color: var(--color-white);
  text-shadow: 1px 1px 4px rgba(0, 0, 0, 0.8);
}

.gl-hero a:not(.btn-custom):hover {
  color: var(--color-neon-green);
  text-shadow: 0 0 10px var(--color-neon-green);
}

.gl-hero h2,
.gl-hero h3,
.gl-hero h4,
.gl-hero h5,
.gl-hero h6 {
  color: var(--color-white);
  text-shadow: 1px 1px 6px rgba(0, 0, 0, 0.8), 0 0 15px rgba(153, 51, 255, 0.4);
}

@keyframes gl-glow-pulse {
  from { 
    text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.8), 0 0 20px var(--color-neon-green), 0 0 30px var(--color-neon-green);
  }
  to { 
    text-shadow: 2px 2px 12px rgba(0, 0, 0, 0.9), 0 0 30px var(--color-neon-green), 0 0 50px var(--color-neon-green);
  }
}

.gl-card {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-backdrop);
  border: var(--glass-border);
  border-radius: var(--border-radius);
  padding: var(--spacing-md);
  margin-bottom: var(--spacing-md);
  transition: var(--transition-smooth);
  box-shadow: var(--shadow-neon);
  position: relative;
  overflow: hidden;
}

.gl-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
  transition: left 0.5s;
}

.gl-card:hover::before {
  left: 100%;
}

.gl-card:hover {
  transform: translateY(-5px) scale(1.02);
  box-shadow: var(--shadow-glow);
  border-color: var(--color-neon-green);
}

.gl-portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--spacing-lg);
  margin: var(--spacing-lg) 0;
}

.gl-portfolio-item {
  position: relative;
  overflow: hidden;
  border-radius: var(--border-radius);
  transition: var(--transition-smooth);
  opacity: 1;
  transform: scale(1);
}

.gl-portfolio-item.hidden {
  display: none !important;
}

.gl-portfolio-card {
  position: relative;
  width: 100%;
  height: 100%;
  min-height: 400px;
  overflow: hidden;
  border-radius: var(--border-radius);
  background: var(--color-dark-bg);
  box-shadow: var(--shadow-neon);
  transition: var(--transition-smooth);
}

.gl-portfolio-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-glow);
}

.gl-portfolio-image {
  width: 100%;
  height: 400px;
  object-fit: cover;
  transition: var(--transition-smooth);
  display: block;
}

.gl-portfolio-item:hover .gl-portfolio-image {
  transform: scale(1.1);
  filter: brightness(1.2) hue-rotate(90deg);
}

.gl-portfolio-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(to top, rgba(0, 0, 51, 0.95), rgba(0, 0, 51, 0.7), transparent);
  color: var(--color-white);
  padding: var(--spacing-md);
  transform: translateY(0);
  transition: var(--transition-smooth);
  z-index: 2;
}

.gl-portfolio-item:hover .gl-portfolio-overlay {
  background: linear-gradient(to top, rgba(0, 0, 51, 0.98), rgba(0, 0, 51, 0.85));
}

.gl-timeline {
  position: relative;
  margin: var(--spacing-xl) 0;
}

.gl-timeline::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  width: 2px;
  height: 100%;
  background: linear-gradient(to bottom, var(--color-secondary-purple), var(--color-neon-green));
  transform: translateX(-50%);
}

.gl-timeline-item {
  display: flex;
  margin: var(--spacing-lg) 0;
  position: relative;
}

.gl-timeline-item:nth-child(odd) {
  justify-content: flex-end;
}

.gl-timeline-content {
  width: 45%;
  padding: var(--spacing-md);
  background: var(--glass-bg);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-neon);
  transition: var(--transition-smooth);
}

.gl-timeline-item:hover .gl-timeline-content {
  box-shadow: var(--shadow-glow);
  transform: scale(1.05);
}

.swiper-slide .gl-testimonial {
  text-align: center;
  padding: var(--spacing-lg);
  background: var(--glass-bg);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-neon);
}

.gl-testimonial blockquote {
  font-style: italic;
  color: var(--color-silver);
  margin-bottom: var(--spacing-sm);
}

.gl-testimonial cite {
  color: var(--color-neon-green);
  font-weight: bold;
}

.gl-contact-form .form-control {
  background: var(--glass-bg);
  border: var(--glass-border);
  color: var(--color-white);
  transition: var(--transition-fast);
}

.gl-contact-form .form-control:focus {
  border-color: var(--color-neon-green);
  box-shadow: 0 0 0 0.2rem rgba(51, 255, 51, 0.25);
  background: rgba(255, 255, 255, 0.15);
}

.gl-contact-form .btn-primary {
  background: linear-gradient(135deg, var(--color-secondary-purple), var(--color-accent-purple));
  border: none;
  color: var(--color-white);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--border-radius);
  transition: var(--transition-smooth);
  box-shadow: var(--shadow-neon);
}

.gl-contact-form .btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
  background: linear-gradient(135deg, var(--color-accent-purple), var(--color-neon-green));
}

.navbar {
  background: rgba(0, 0, 51, 0.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-silver);
}

.navbar-brand {
  font-family: var(--font-heading);
  color: var(--color-neon-green) !important;
  font-weight: bold;
  text-shadow: 0 0 5px var(--color-neon-green);
  transition: var(--transition-smooth);
}

.navbar-brand img {
  transition: var(--transition-smooth);
  filter: drop-shadow(0 0 5px rgba(51, 255, 51, 0.5));
}

.navbar-brand:hover img {
  transform: scale(1.05);
  filter: drop-shadow(0 0 10px rgba(51, 255, 51, 0.8));
}

.navbar-brand svg {
  transition: var(--transition-smooth);
}

.navbar-brand:hover svg circle {
  animation: pulse-glow 1.5s ease-in-out infinite;
}

.navbar-brand:hover svg polygon {
  filter: brightness(1.2);
}

@keyframes pulse-glow {
  0%, 100% {
    opacity: 0.95;
    filter: drop-shadow(0 0 5px rgba(51, 255, 51, 0.8));
  }
  50% {
    opacity: 1;
    filter: drop-shadow(0 0 15px rgba(51, 255, 51, 1));
  }
}

.nav-link {
  color: var(--color-silver) !important;
  transition: var(--transition-fast);
  position: relative;
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-neon-green) !important;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-neon-green);
  transition: width 0.3s ease;
}

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

footer {
  background: var(--color-primary-deep-blue);
  color: var(--color-silver);
  padding: var(--spacing-lg) 0;
  text-align: center;
}

footer a {
  color: var(--color-accent-purple);
  transition: var(--transition-fast);
}

footer a:hover {
  color: var(--color-neon-green);
  text-decoration: underline;
}

.btn-custom {
  background: linear-gradient(135deg, var(--color-secondary-purple), var(--color-neon-green));
  border: none;
  color: var(--color-white);
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--border-radius);
  text-transform: uppercase;
  font-weight: bold;
  transition: var(--transition-smooth);
  box-shadow: var(--shadow-neon);
  position: relative;
  overflow: hidden;
}

.btn-custom::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

.btn-custom:active::before {
  width: 300px;
  height: 300px;
}

.btn-custom:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-glow);
}

a {
  color: var(--color-accent-purple);
  transition: var(--transition-fast);
}

a:hover {
  color: var(--color-neon-green);
  text-shadow: 0 0 5px var(--color-neon-green);
}

img {
  transition: var(--transition-smooth);
  border-radius: var(--border-radius);
  loading: lazy; 
}

img:hover {
  box-shadow: var(--shadow-glow);
  transform: scale(1.05);
}

.gl-tech-stack {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 400px;
  background: var(--glass-bg);
  border-radius: var(--border-radius);
  margin: var(--spacing-lg) 0;
}

.gl-3d-viewer {
  width: 100%;
  height: 400px;
  background: var(--color-dark-bg);
  border: var(--glass-border);
  border-radius: var(--border-radius);
  overflow: hidden;
}

.gl-loader {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--color-primary-deep-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  transition: opacity 0.5s ease;
}

.gl-loader.hidden {
  opacity: 0;
  pointer-events: none;
}

.gl-loader-spinner {
  width: 50px;
  height: 50px;
  border: 3px solid var(--color-silver);
  border-top: 3px solid var(--color-neon-green);
  border-radius: 50%;
  animation: gl-spin 1s linear infinite;
}

@keyframes gl-spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

@media (max-width: 1024px) {
  .gl-portfolio-grid {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
  }
  .gl-portfolio-card {
    min-height: 350px;
  }
  .gl-portfolio-image {
    height: 350px;
  }
  .gl-timeline-content {
    width: 50%;
  }
}

@media (max-width: 768px) {
  :root {
    --font-size-heading-xl: 2.5rem;
    --font-size-heading-lg: 2rem;
    --font-size-heading-md: 1.5rem;
  }
  .gl-hero {
    min-height: 80vh;
    padding: var(--spacing-md);
  }
  .gl-hero-content {
    padding: var(--spacing-md);
    background: rgba(0, 0, 0, 0.6);
  }
  .gl-hero h1 {
    font-size: 2rem;
    text-shadow: 2px 2px 10px rgba(0, 0, 0, 0.9), 0 0 25px var(--color-neon-green);
  }
  .gl-hero .lead {
    font-size: 1.1rem;
    text-shadow: 1px 1px 8px rgba(0, 0, 0, 0.9);
  }
  .gl-hero .btn-custom {
    padding: 0.875rem 2rem;
    font-size: 1rem;
  }
  .gl-timeline::before {
    left: 20px;
  }
  .gl-timeline-item {
    flex-direction: column;
    align-items: flex-start;
  }
  .gl-timeline-content {
    width: 100%;
    margin-left: 40px;
  }
  .gl-portfolio-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }
  .gl-portfolio-card {
    min-height: 300px;
  }
  .gl-portfolio-image {
    height: 300px;
  }
}

@media (max-width: 480px) {
  :root {
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
  }
  h1 { 
    font-size: 2rem;
  }
  .gl-hero { 
    padding: var(--spacing-sm);
    min-height: 70vh;
  }
  .gl-hero-content {
    padding: var(--spacing-sm);
    background: rgba(0, 0, 0, 0.7);
  }
  .gl-hero h1 {
    font-size: 1.75rem;
    text-shadow: 2px 2px 12px rgba(0, 0, 0, 0.95), 0 0 30px var(--color-neon-green);
  }
  .gl-hero .lead {
    font-size: 1rem;
    text-shadow: 1px 1px 10px rgba(0, 0, 0, 0.95);
  }
  .gl-portfolio-card {
    min-height: 280px;
  }
  .gl-portfolio-image {
    height: 280px;
  }
  .gl-portfolio-overlay {
    padding: var(--spacing-sm);
  }
}

*:focus {
  outline: 2px solid var(--color-neon-green);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .gl-hero h1 {
    animation: none;
  }
}

body.light-theme {
  background-color: var(--color-light-bg);
  color: var(--color-primary-deep-blue);
}

body.light-theme .gl-card,
body.light-theme .gl-hero-content,
body.light-theme .form-control {
  background: rgba(255, 255, 255, 0.9);
  color: var(--color-primary-deep-blue);
  border-color: var(--color-silver);
}

body.light-theme p,
body.light-theme ul,
body.light-theme ol {
  color: var(--color-primary-blue);
}

.gl-card.light {
  color: var(--color-primary-deep-blue);
}

.gl-card.dark {
  color: var(--color-white);
}

.portfolio-filter-btn {
  background: transparent;
  border: 1px solid var(--color-silver);
  color: var(--color-silver);
  padding: 0.5rem 1rem;
  margin: 0.25rem;
  border-radius: var(--border-radius);
  transition: var(--transition-smooth);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.portfolio-filter-btn:hover,
.portfolio-filter-btn.active {
  background: linear-gradient(135deg, var(--color-secondary-purple), var(--color-neon-green));
  border-color: var(--color-neon-green);
  color: var(--color-white);
  box-shadow: var(--shadow-glow);
  transform: translateY(-2px);
}

.portfolio-filter-btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
  transition: left 0.5s ease;
}

.portfolio-filter-btn:hover::before {
  left: 100%;
}

.fancybox__container {
  background: rgba(0, 0, 51, 0.95);
  backdrop-filter: blur(20px);
}

.fancybox__content {
  background: var(--glass-bg);
  border: var(--glass-border);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-glow);
  color: var(--color-white);
}

.fancybox__content h2, .fancybox__content h3 {
  color: var(--color-white);
  text-shadow: 0 0 5px var(--color-accent-purple);
}

.fancybox__content p, .fancybox__content ul {
  color: var(--color-silver);
}

.fancybox__content .img-fluid {
  transition: var(--transition-fast);
  border-radius: var(--border-radius);
}

.fancybox__content .img-fluid:hover {
  transform: scale(1.05);
  box-shadow: var(--shadow-neon);
}

.gl-tech-stack svg {
  filter: drop-shadow(0 0 5px var(--color-neon-green));
}

.gl-3d-viewer canvas {
  border-radius: var(--border-radius);
  box-shadow: inset 0 0 20px rgba(0,0,0,0.5);
}

@media (max-width: 768px) {
  .fancybox__content {
    margin: 1rem;
    padding: 1rem;
  }
  .portfolio-filter-btn {
    font-size: 0.9rem;
    padding: 0.4rem 0.8rem;
  }
}

.skip-link {
  position: absolute;
  top: -40px;
  left: 6px;
  background: var(--color-neon-green);
  color: black;
  padding: 8px;
  text-decoration: none;
  z-index: 1000;
  border-radius: 0 0 var(--border-radius) var(--border-radius);
}

.skip-link:focus {
  top: 0;
}

.theme-toggle {
  background: none;
  border: var(--glass-border);
  color: var(--color-white);
  padding: 0.5rem;
  border-radius: 50%;
  cursor: pointer;
  transition: var(--transition-fast);
}

.theme-toggle:hover {
  background: var(--glass-bg);
  transform: rotate(180deg);
}