/*
 * WD Studio - Tech Theme CSS v8
 * Modern dark interface with cyber-tech aesthetics
 * Version: 8.0
 */

:root {
  --tech-bg-primary: #0a0a0f;
  --tech-bg-secondary: #12121a;
  --tech-bg-tertiary: #1a1a25;
  --tech-bg-card: #151520;
  
  --tech-cyan: #00f5ff;
  --tech-cyan-glow: rgba(0, 245, 255, 0.4);
  --tech-purple: #b829dd;
  --tech-purple-glow: rgba(184, 41, 221, 0.4);
  --tech-blue: #0080ff;
  --tech-blue-glow: rgba(0, 128, 255, 0.4);
  --tech-green: #00ff88;
  --tech-green-glow: rgba(0, 255, 136, 0.4);
  
  --tech-text-primary: #ffffff;
  --tech-text-secondary: #a0a0b0;
  --tech-text-muted: #606070;
  
  --tech-gradient-cyber: linear-gradient(135deg, var(--tech-cyan) 0%, var(--tech-purple) 100%);
  --tech-gradient-dark: linear-gradient(180deg, var(--tech-bg-primary) 0%, var(--tech-bg-secondary) 100%);
  --tech-gradient-glow: radial-gradient(ellipse at center, var(--tech-cyan-glow) 0%, transparent 70%);
  
  --tech-space-xs: 0.5rem;
  --tech-space-sm: 1rem;
  --tech-space-md: 2rem;
  --tech-space-lg: 4rem;
  --tech-space-xl: 8rem;
  
  --tech-radius-sm: 8px;
  --tech-radius-md: 12px;
  --tech-radius-lg: 20px;
  --tech-radius-xl: 32px;
  
  --tech-shadow-glow-cyan: 0 0 30px var(--tech-cyan-glow);
  --tech-shadow-glow-purple: 0 0 30px var(--tech-purple-glow);
  --tech-shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);
  
  --tech-transition-fast: 0.2s ease;
  --tech-transition-normal: 0.3s ease;
  --tech-transition-slow: 0.5s ease;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--tech-bg-primary);
  color: var(--tech-text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

.tech-bg-grid {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  opacity: 0.03;
  background-image: 
    linear-gradient(rgba(0, 245, 255, 0.3) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 245, 255, 0.3) 1px, transparent 1px);
  background-size: 50px 50px;
  animation: gridMove 20s linear infinite;
}

@keyframes gridMove {
  0% { transform: perspective(500px) rotateX(60deg) translateY(0); }
  100% { transform: perspective(500px) rotateX(60deg) translateY(50px); }
}

.tech-particles {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
  overflow: hidden;
}

.tech-particle {
  position: absolute;
  width: 4px;
  height: 4px;
  background: var(--tech-cyan);
  border-radius: 50%;
  opacity: 0.6;
  animation: floatParticle 15s infinite;
  box-shadow: 0 0 10px var(--tech-cyan);
}

.tech-particle:nth-child(2n) { background: var(--tech-purple); box-shadow: 0 0 10px var(--tech-purple); }
.tech-particle:nth-child(3n) { background: var(--tech-green); box-shadow: 0 0 10px var(--tech-green); }

@keyframes floatParticle {
  0%, 100% { transform: translateY(100vh) rotate(0deg); opacity: 0; }
  10% { opacity: 0.6; }
  90% { opacity: 0.6; }
  100% { transform: translateY(-100vh) rotate(720deg); opacity: 0; }
}

.tech-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(10, 10, 15, 0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(0, 245, 255, 0.1);
  transition: var(--tech-transition-normal);
}

.tech-header.scrolled {
  background: rgba(10, 10, 15, 0.95);
  border-bottom-color: rgba(0, 245, 255, 0.2);
}

.tech-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 2rem;
  max-width: 1400px;
  margin: 0 auto;
}

.tech-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
}

.tech-logo-icon { width: 45px; height: 45px; position: relative; }
.tech-logo-icon svg { width: 100%; height: 100%; }
.tech-logo-icon .logo-glow { filter: drop-shadow(0 0 10px var(--tech-cyan)); }

.tech-logo-text {
  font-size: 1.5rem;
  font-weight: 800;
  background: var(--tech-gradient-cyber);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.5px;
}

.tech-nav { display: flex; align-items: center; gap: 0.5rem; }

.tech-nav-link {
  position: relative;
  padding: 0.75rem 1.25rem;
  color: var(--tech-text-secondary);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  transition: var(--tech-transition-fast);
  border-radius: var(--tech-radius-sm);
  overflow: hidden;
}

.tech-nav-link::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--tech-gradient-cyber);
  transition: var(--tech-transition-normal);
  transform: translateX(-50%);
}

.tech-nav-link:hover, .tech-nav-link.active { color: var(--tech-text-primary); }
.tech-nav-link:hover::before, .tech-nav-link.active::before { width: 80%; }
.tech-nav-link.active { background: rgba(0, 245, 255, 0.1); }

.language-switcher { display: flex; align-items: center; gap: 0.5rem; margin-left: 1rem; padding-left: 1rem; border-left: 1px solid rgba(255,255,255,0.1); }

.tech-hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 8rem 2rem 4rem;
  overflow: hidden;
  background: linear-gradient(135deg, rgba(10, 10, 15, 0.95) 0%, rgba(10, 10, 15, 0.8) 50%, rgba(10, 10, 15, 0.95) 100%);
}

.tech-hero-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 800px;
  height: 800px;
  background: var(--tech-gradient-glow);
  border-radius: 50%;
  filter: blur(100px);
  opacity: 0.5;
  animation: pulseGlow 4s ease-in-out infinite;
}

@keyframes pulseGlow {
  0%, 100% { opacity: 0.3; transform: translate(-50%, -50%) scale(1); }
  50% { opacity: 0.6; transform: translate(-50%, -50%) scale(1.1); }
}

.tech-hero-content {
  position: relative;
  z-index: 10;
  text-align: center;
  max-width: 900px;
}

.tech-hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: rgba(0, 245, 255, 0.1);
  border: 1px solid rgba(0, 245, 255, 0.3);
  border-radius: 50px;
  font-size: 0.875rem;
  color: var(--tech-cyan);
  margin-bottom: 2rem;
  animation: badgePulse 2s ease-in-out infinite;
}

.tech-hero-badge::before {
  content: '';
  width: 8px;
  height: 8px;
  background: var(--tech-cyan);
  border-radius: 50%;
  animation: dotPulse 1s ease-in-out infinite;
}

@keyframes badgePulse { 0%, 100% { box-shadow: 0 0 10px rgba(0, 245, 255, 0.2); } 50% { box-shadow: 0 0 20px rgba(0, 245, 255, 0.4); } }
@keyframes dotPulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.5; } }

.tech-hero-title {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 1.5rem;
  letter-spacing: -1px;
}

.tech-hero-title .gradient-text {
  background: var(--tech-gradient-cyber);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.tech-hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--tech-text-secondary);
  max-width: 600px;
  margin: 0 auto 3rem;
  line-height: 1.7;
}

.tech-code-window {
  background: var(--tech-bg-card);
  border-radius: var(--tech-radius-md);
  border: 1px solid rgba(0, 245, 255, 0.2);
  overflow: hidden;
  max-width: 600px;
  margin: 0 auto 3rem;
  box-shadow: var(--tech-shadow-glow-cyan);
}

.tech-code-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1rem;
  background: rgba(0, 0, 0, 0.3);
  border-bottom: 1px solid rgba(0, 245, 255, 0.1);
}

.tech-code-dot { width: 12px; height: 12px; border-radius: 50%; }
.tech-code-dot.red { background: #ff5f56; }
.tech-code-dot.yellow { background: #ffbd2e; }
.tech-code-dot.green { background: #27c93f; }

.tech-code-body {
  padding: 1.5rem;
  font-family: 'Fira Code', 'Consolas', monospace;
  font-size: 0.9rem;
  text-align: left;
  color: var(--tech-text-secondary);
}

.tech-code-line { display: flex; gap: 1rem; }
.tech-code-line-number { color: var(--tech-text-muted); min-width: 2rem; text-align: right; }
.tech-code-content { color: var(--tech-cyan); }
.tech-code-content .keyword { color: var(--tech-purple); }
.tech-code-content .string { color: var(--tech-green); }
.tech-code-content .function { color: var(--tech-blue); }

.typing-cursor {
  display: inline-block;
  width: 2px;
  height: 1.2em;
  background: var(--tech-cyan);
  animation: blink 1s step-end infinite;
  vertical-align: middle;
  margin-left: 2px;
}

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

.tech-btn-group { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }

.tech-btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 1rem 2rem;
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  border-radius: var(--tech-radius-sm);
  transition: var(--tech-transition-normal);
  overflow: hidden;
  cursor: pointer;
  border: none;
}

.tech-btn-primary {
  background: var(--tech-gradient-cyber);
  color: var(--tech-bg-primary);
}

.tech-btn-primary::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
  transition: var(--tech-transition-slow);
}

.tech-btn-primary:hover::before { left: 100%; }
.tech-btn-primary:hover { transform: translateY(-2px); box-shadow: var(--tech-shadow-glow-cyan); }

.tech-btn-outline {
  background: transparent;
  color: var(--tech-cyan);
  border: 2px solid var(--tech-cyan);
}

.tech-btn-outline:hover { background: rgba(0, 245, 255, 0.1); box-shadow: var(--tech-shadow-glow-cyan); transform: translateY(-2px); }

.tech-section { position: relative; padding: 6rem 2rem; }

.tech-section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 4rem;
}

.tech-section-label {
  display: inline-block;
  padding: 0.5rem 1rem;
  background: rgba(0, 245, 255, 0.1);
  border: 1px solid rgba(0, 245, 255, 0.3);
  border-radius: 50px;
  font-size: 0.875rem;
  color: var(--tech-cyan);
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 1rem;
}

.tech-section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  margin-bottom: 1rem;
}

.tech-section-title .gradient-text {
  background: var(--tech-gradient-cyber);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.tech-section-desc {
  color: var(--tech-text-secondary);
  font-size: 1.1rem;
  line-height: 1.7;
}

.tech-services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
  max-width: 1400px;
  margin: 0 auto;
}

.tech-service-card {
  position: relative;
  background: var(--tech-bg-card);
  border-radius: var(--tech-radius-lg);
  padding: 2.5rem;
  border: 1px solid rgba(255, 255, 255, 0.05);
  transition: var(--tech-transition-normal);
  overflow: hidden;
}

.tech-service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--tech-gradient-cyber);
  transform: scaleX(0);
  transform-origin: left;
  transition: var(--tech-transition-normal);
}

.tech-service-card:hover::before { transform: scaleX(1); }
.tech-service-card:hover {
  transform: translateY(-8px);
  border-color: rgba(0, 245, 255, 0.2);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4), 0 0 30px rgba(0, 245, 255, 0.1);
}

.tech-service-icon {
  width: 70px;
  height: 70px;
  background: rgba(0, 245, 255, 0.1);
  border-radius: var(--tech-radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  position: relative;
}

.tech-service-icon::after {
  content: '';
  position: absolute;
  inset: -2px;
  border-radius: var(--tech-radius-md);
  background: var(--tech-gradient-cyber);
  z-index: -1;
  opacity: 0;
  transition: var(--tech-transition-normal);
}

.tech-service-card:hover .tech-service-icon::after { opacity: 1; }

.tech-service-icon svg { width: 35px; height: 35px; color: var(--tech-cyan); }
.tech-service-title { font-size: 1.5rem; font-weight: 700; margin-bottom: 1rem; }
.tech-service-desc { color: var(--tech-text-secondary); line-height: 1.7; margin-bottom: 1.5rem; }

.tech-service-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--tech-cyan);
  text-decoration: none;
  font-weight: 600;
  transition: var(--tech-transition-fast);
}

.tech-service-link:hover { gap: 1rem; }
.tech-service-link svg { transition: var(--tech-transition-fast); }

.tech-stack {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
  max-width: 1000px;
  margin: 0 auto;
}

.tech-stack-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.25rem;
  background: var(--tech-bg-card);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: var(--tech-radius-sm);
  font-size: 0.9rem;
  color: var(--tech-text-secondary);
  transition: var(--tech-transition-fast);
}

.tech-stack-item:hover { border-color: var(--tech-cyan); color: var(--tech-cyan); transform: translateY(-2px); }

.tech-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  max-width: 1000px;
  margin: 0 auto;
}

.tech-stat {
  text-align: center;
  padding: 2rem;
  background: var(--tech-bg-card);
  border-radius: var(--tech-radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.05);
  position: relative;
  overflow: hidden;
}

.tech-stat::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--tech-gradient-cyber);
}

.tech-stat-number {
  font-size: 3rem;
  font-weight: 800;
  background: var(--tech-gradient-cyber);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: 0.5rem;
}

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

.tech-footer {
  background: var(--tech-bg-secondary);
  border-top: 1px solid rgba(0, 245, 255, 0.1);
  padding: 4rem 2rem 2rem;
}

.tech-footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 3rem;
  max-width: 1400px;
  margin: 0 auto 3rem;
}

.tech-footer-brand { max-width: 300px; }

.tech-footer-logo {
  font-size: 1.75rem;
  font-weight: 800;
  background: var(--tech-gradient-cyber);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 1rem;
}

.tech-footer-desc { color: var(--tech-text-secondary); line-height: 1.7; margin-bottom: 1.5rem; }

.tech-social { display: flex; gap: 1rem; }

.tech-social-link {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--tech-bg-tertiary);
  border-radius: var(--tech-radius-sm);
  color: var(--tech-text-secondary);
  transition: var(--tech-transition-fast);
}

.tech-social-link:hover { background: var(--tech-cyan); color: var(--tech-bg-primary); transform: translateY(-3px); }

.tech-footer-title { font-size: 1.1rem; font-weight: 700; margin-bottom: 1.5rem; color: var(--tech-text-primary); }

.tech-footer-links { list-style: none; }
.tech-footer-links li { margin-bottom: 0.75rem; }

.tech-footer-links a {
  color: var(--tech-text-secondary);
  text-decoration: none;
  transition: var(--tech-transition-fast);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.tech-footer-links a::before { content: '>'; color: var(--tech-cyan); opacity: 0; transition: var(--tech-transition-fast); }
.tech-footer-links a:hover { color: var(--tech-cyan); padding-left: 0.5rem; }
.tech-footer-links a:hover::before { opacity: 1; }

.tech-footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 2rem;
  text-align: center;
  color: var(--tech-text-muted);
  font-size: 0.9rem;
}

.tech-scroll-reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.tech-scroll-reveal.visible { opacity: 1; transform: translateY(0); }

/* Breadcrumb */
.tech-breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 2rem;
  font-size: 0.9rem;
}

.tech-breadcrumb a { color: var(--tech-text-muted); text-decoration: none; transition: var(--tech-transition-fast); }
.tech-breadcrumb a:hover { color: var(--tech-cyan); }
.tech-breadcrumb span { color: var(--tech-cyan); }

/* Form Styles */
.tech-form-group { margin-bottom: 1.5rem; }

.tech-form-label {
  display: block;
  margin-bottom: 0.5rem;
  color: var(--tech-text-secondary);
  font-size: 0.9rem;
}

.tech-form-input,
.tech-form-textarea {
  width: 100%;
  padding: 1rem 1.25rem;
  background: var(--tech-bg-card);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--tech-radius-sm);
  color: var(--tech-text-primary);
  font-size: 1rem;
  transition: var(--tech-transition-fast);
}

.tech-form-input:focus,
.tech-form-textarea:focus {
  outline: none;
  border-color: var(--tech-cyan);
  box-shadow: 0 0 0 3px rgba(0, 245, 255, 0.1);
}

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

/* Contact Info */
.tech-contact-info {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.tech-contact-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 1.5rem;
  background: var(--tech-bg-card);
  border-radius: var(--tech-radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.tech-contact-icon {
  width: 50px;
  height: 50px;
  background: rgba(0, 245, 255, 0.1);
  border-radius: var(--tech-radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--tech-cyan);
  flex-shrink: 0;
}

.tech-contact-content h4 { font-size: 1.1rem; margin-bottom: 0.25rem; }
.tech-contact-content p { color: var(--tech-text-secondary); font-size: 0.95rem; }
.tech-contact-content a { color: var(--tech-cyan); text-decoration: none; }

/* Portfolio Grid */
.tech-portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
  max-width: 1400px;
  margin: 0 auto;
}

.tech-portfolio-card {
  position: relative;
  background: var(--tech-bg-card);
  border-radius: var(--tech-radius-lg);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.05);
  transition: var(--tech-transition-normal);
}

.tech-portfolio-card:hover {
  transform: translateY(-8px);
  border-color: rgba(0, 245, 255, 0.2);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4), 0 0 30px rgba(0, 245, 255, 0.1);
}

.tech-portfolio-image {
  width: 100%;
  height: 220px;
  object-fit: cover;
}

.tech-portfolio-content { padding: 1.5rem; }
.tech-portfolio-content h3 { font-size: 1.25rem; margin-bottom: 0.5rem; }
.tech-portfolio-content p { color: var(--tech-text-secondary); font-size: 0.95rem; margin-bottom: 1rem; }

.tech-portfolio-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tech-portfolio-tag {
  padding: 0.25rem 0.75rem;
  background: rgba(0, 245, 255, 0.1);
  border-radius: 20px;
  font-size: 0.8rem;
  color: var(--tech-cyan);
}

/* About Page Styles */
.tech-about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  max-width: 1200px;
  margin: 0 auto;
  align-items: center;
}

.tech-about-content h2 { font-size: 2.5rem; margin-bottom: 1.5rem; }
.tech-about-content p { color: var(--tech-text-secondary); line-height: 1.8; margin-bottom: 1.5rem; }

.tech-values-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  max-width: 1000px;
  margin: 0 auto;
}

.tech-value-card {
  text-align: center;
  padding: 2rem;
  background: var(--tech-bg-card);
  border-radius: var(--tech-radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.tech-value-card h3 { font-size: 1.25rem; margin-bottom: 1rem; }
.tech-value-card p { color: var(--tech-text-secondary); font-size: 0.95rem; }

/* Responsive */
@media (max-width: 1024px) {
  .tech-about-grid { grid-template-columns: 1fr; gap: 2rem; }
}

@media (max-width: 768px) {
  .tech-header-inner { padding: 1rem; }
  .tech-nav { display: none; }
  .tech-hero { padding: 6rem 1rem 3rem; }
  .tech-btn-group { flex-direction: column; align-items: center; }
  .tech-services-grid { grid-template-columns: 1fr; }
  .tech-stats { grid-template-columns: repeat(2, 1fr); }
  .tech-portfolio-grid { grid-template-columns: 1fr; }
}

::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--tech-bg-primary); }
::-webkit-scrollbar-thumb { background: var(--tech-cyan); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--tech-purple); }

/* a11y: keyboard-only skip link */
.skip-link {
    position: absolute;
    top: -100px;
    left: 1rem;
    z-index: 1000;
    padding: 0.75rem 1.25rem;
    background: var(--tech-cyan);
    color: #000;
    border-radius: 6px;
    font-weight: 600;
    text-decoration: none;
    transition: top 0.2s;
}
.skip-link:focus { top: 1rem; }