:root {
  --color-bg: #0a0a0a;
  --color-surface: #141414;
  --color-text: #e8e8e8;
  --color-text-secondary: #a0a0a0;
  --color-accent: #00ff88;
  --color-accent-dim: #00cc6a;
  --color-border: #2a2a2a;
  --font-display: 'DM Sans', sans-serif;
  --font-mono: 'Space Mono', monospace;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-display);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Prevent text size adjustment on iOS */
html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

/* Navigation */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 2rem 0;
  background: rgba(10, 10, 10, 0.8);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  animation: slideDown 0.6s ease-out;
}

@keyframes slideDown {
  from {
    transform: translateY(-100%);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

.nav-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 3rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-logo {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, var(--color-accent), #00ddff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-decoration: none;
}

.nav-links {
  display: flex;
  gap: 3rem;
}

.nav-link {
  color: var(--color-text);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  position: relative;
  transition: var(--transition);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-accent);
  transition: width 0.3s ease;
}

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

@media (hover: hover) {
  .nav-link:hover::after {
    width: 100%;
  }
}

/* Hero Section */
.hero {
  min-height: 100vh;
  min-height: calc(var(--vh, 1vh) * 100); /* Fallback for mobile browsers */
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 8rem 3rem 4rem;
  position: relative;
  background: 
    radial-gradient(circle at 20% 50%, rgba(0, 255, 136, 0.05) 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(0, 221, 255, 0.05) 0%, transparent 50%);
}

/* Optimize images for mobile */
img {
  max-width: 100%;
  height: auto;
  display: block;
}

.hero-content {
  max-width: 1200px;
  text-align: center;
  animation: fadeInUp 0.8s ease-out 0.2s both;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero-label {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  letter-spacing: 0.15em;
  color: var(--color-accent);
  margin-bottom: 2rem;
  animation: fadeInUp 0.8s ease-out 0.4s both;
}

.hero-title {
  font-size: clamp(2.5rem, 8vw, 6rem);
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: 2rem;
  letter-spacing: -0.02em;
  animation: fadeInUp 0.8s ease-out 0.6s both;
}

.hero-highlight {
  background: linear-gradient(135deg, var(--color-accent), #00ddff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  position: relative;
  display: inline-block;
}

.hero-description {
  font-size: clamp(1.1rem, 2vw, 1.3rem);
  color: var(--color-text-secondary);
  max-width: 700px;
  margin: 0 auto 3rem;
  animation: fadeInUp 0.8s ease-out 0.8s both;
}

.hero-cta {
  display: flex;
  gap: 1.5rem;
  justify-content: center;
  flex-wrap: wrap;
  animation: fadeInUp 0.8s ease-out 1s both;
}

.btn-primary {
  padding: 1rem 2.5rem;
  background: var(--color-accent);
  color: var(--color-bg);
  text-decoration: none;
  border-radius: 8px;
  font-weight: 600;
  font-size: 1rem;
  transition: var(--transition);
  border: 2px solid var(--color-accent);
}

.btn-primary:hover {
  background: transparent;
  color: var(--color-accent);
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(0, 255, 136, 0.2);
}

.btn-secondary {
  padding: 1rem 2.5rem;
  background: transparent;
  color: var(--color-text);
  text-decoration: none;
  border-radius: 8px;
  font-weight: 600;
  font-size: 1rem;
  transition: var(--transition);
  border: 2px solid var(--color-border);
}

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

.hero-scroll {
  position: absolute;
  bottom: 3rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-text-secondary);
  animation: fadeInUp 0.8s ease-out 1.2s both;
}

.scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--color-accent), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
  0%, 100% {
    opacity: 0.3;
    transform: translateY(0);
  }
  50% {
    opacity: 1;
    transform: translateY(10px);
  }
}

/* Section Styles */
.section-label {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  letter-spacing: 0.15em;
  color: var(--color-accent);
  margin-bottom: 1.5rem;
}

.section-title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 2rem;
  letter-spacing: -0.02em;
}

/* About Section */
.about {
  padding: 8rem 3rem;
  max-width: 1400px;
  margin: 0 auto;
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 6rem;
  align-items: center;
}

.about-image-container {
  position: relative;
}

.about-image-bg {
  position: absolute;
  top: -20px;
  left: -20px;
  right: 20px;
  bottom: 20px;
  background: linear-gradient(135deg, var(--color-accent), #00ddff);
  opacity: 0.1;
  border-radius: 12px;
  z-index: 0;
}

.about-image {
  position: relative;
  width: 100%;
  height: auto;
  border-radius: 12px;
  z-index: 1;
  filter: grayscale(30%);
  transition: var(--transition);
}

.about-image:hover {
  filter: grayscale(0%);
  transform: translate(-5px, -5px);
}

.about-decoration {
  position: absolute;
  bottom: -15px;
  right: -15px;
  width: 150px;
  height: 150px;
  border: 2px solid var(--color-accent);
  border-radius: 12px;
  z-index: 0;
}

.about-text {
  font-size: 1.1rem;
  color: var(--color-text-secondary);
  margin-bottom: 1.5rem;
  line-height: 1.8;
}

.about-skills {
  margin-top: 3rem;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.skill-item {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.skill-name {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-text);
}

.skill-bar {
  height: 4px;
  background: var(--color-border);
  border-radius: 2px;
  overflow: hidden;
}

.skill-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-accent), #00ddff);
  border-radius: 2px;
  animation: fillBar 1.5s ease-out;
}

@keyframes fillBar {
  from {
    width: 0;
  }
}

/* Work Section */
.work {
  padding: 8rem 3rem;
  background: var(--color-surface);
}

.work-header {
  max-width: 1400px;
  margin: 0 auto 4rem;
}

.projects-container {
  max-width: 1400px;
  margin: 0 auto;
  display: grid;
  gap: 3rem;
}

.project-card {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 3rem;
  padding: 3rem;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.project-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-accent), #00ddff);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.5s ease;
}

.project-card:hover::before {
  transform: scaleX(1);
}

.project-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-5px);
  box-shadow: 0 20px 60px rgba(0, 255, 136, 0.1);
}

.project-number {
  font-family: var(--font-mono);
  font-size: 3rem;
  font-weight: 700;
  color: var(--color-border);
  transition: var(--transition);
}

.project-card:hover .project-number {
  color: var(--color-accent);
}

.project-content {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.project-title {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.project-description {
  color: var(--color-text-secondary);
  font-size: 1.05rem;
  line-height: 1.7;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1rem;
}

.tag {
  padding: 0.4rem 1rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 20px;
  font-size: 0.85rem;
  font-family: var(--font-mono);
  color: var(--color-text-secondary);
  transition: var(--transition);
}

.project-card:hover .tag {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.project-link {
  color: var(--color-accent);
  text-decoration: none;
  font-weight: 600;
  margin-top: 1rem;
  display: inline-block;
  transition: var(--transition);
}

.project-link:hover {
  transform: translateX(5px);
}

/* Contact Section */
.contact {
  padding: 8rem 3rem;
  max-width: 1400px;
  margin: 0 auto;
}

.contact-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6rem;
}

.contact-text {
  font-size: 1.1rem;
  color: var(--color-text-secondary);
  margin-bottom: 3rem;
  line-height: 1.8;
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.contact-item {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: 1.5rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  text-decoration: none;
  transition: var(--transition);
}

.contact-item:hover {
  border-color: var(--color-accent);
  transform: translateX(10px);
}

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

.contact-value {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-text);
}

.contact-form-container {
  background: var(--color-surface);
  padding: 3rem;
  border-radius: 12px;
  border: 1px solid var(--color-border);
}

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

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

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

.form-group input,
.form-group textarea {
  padding: 1rem;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  color: var(--color-text);
  font-family: var(--font-display);
  font-size: 1rem;
  transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(0, 255, 136, 0.1);
}

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

/* Footer */
.footer {
  padding: 3rem;
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
}

/* Hidden honeypot field */
.hidden {
  display: none;
}

.footer-content {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

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

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

.footer-links a {
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: 0.95rem;
  transition: var(--transition);
}

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

/* Responsive Design */
@media (max-width: 1024px) {
  .about-grid,
  .contact-container {
    grid-template-columns: 1fr;
    gap: 4rem;
  }

  .project-card {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .project-number {
    font-size: 2rem;
  }
  
  .about-image-container {
    max-width: 400px;
    margin: 0 auto;
  }
}

@media (max-width: 768px) {
  /* Navigation */
  .nav {
    padding: 1.5rem 0;
  }
  
  .nav-container {
    padding: 0 1.5rem;
  }

  .nav-logo {
    font-size: 1.25rem;
  }

  .nav-links {
    gap: 1.5rem;
  }
  
  .nav-link {
    font-size: 0.9rem;
  }

  /* Hero Section */
  .hero {
    padding: 6rem 1.5rem 3rem;
    min-height: 90vh;
  }
  
  .hero-title {
    font-size: clamp(2rem, 10vw, 3rem);
    margin-bottom: 1.5rem;
  }
  
  .hero-description {
    font-size: 1rem;
    margin-bottom: 2rem;
  }

  .hero-cta {
    flex-direction: column;
    width: 100%;
    gap: 1rem;
  }

  .btn-primary,
  .btn-secondary {
    width: 100%;
    text-align: center;
    padding: 1rem 2rem;
  }
  
  .hero-scroll {
    bottom: 2rem;
  }

  /* Sections */
  .about,
  .work,
  .contact {
    padding: 4rem 1.5rem;
  }
  
  .section-title {
    font-size: clamp(1.75rem, 7vw, 2.5rem);
  }
  
  /* About Section */
  .about-grid {
    gap: 3rem;
  }
  
  .about-image-container {
    max-width: 300px;
  }
  
  .about-text {
    font-size: 1rem;
  }
  
  .about-skills {
    margin-top: 2rem;
    gap: 1.5rem;
  }

  /* Projects */
  .project-card {
    padding: 1.5rem;
    gap: 1.5rem;
  }
  
  .project-number {
    font-size: 1.5rem;
  }
  
  .project-title {
    font-size: 1.5rem;
  }
  
  .project-description {
    font-size: 0.95rem;
  }
  
  .project-tags {
    gap: 0.5rem;
    margin-top: 0.75rem;
  }
  
  .tag {
    font-size: 0.75rem;
    padding: 0.3rem 0.8rem;
  }

  /* Contact */
  .contact-container {
    gap: 3rem;
  }
  
  .contact-text {
    font-size: 1rem;
    margin-bottom: 2rem;
  }
  
  .contact-details {
    gap: 1rem;
  }
  
  .contact-item {
    padding: 1rem;
  }
  
  .contact-value {
    font-size: 0.95rem;
    word-break: break-word;
  }

  .contact-form-container {
    padding: 1.5rem;
  }
  
  .form-group input,
  .form-group textarea {
    font-size: 16px; /* Prevents zoom on iOS */
    padding: 0.875rem;
  }

  /* Footer */
  .footer {
    padding: 2rem 1.5rem;
  }
  
  .footer-content {
    flex-direction: column;
    gap: 1.5rem;
    text-align: center;
  }
  
  .footer-links {
    gap: 1.5rem;
  }
}

@media (max-width: 480px) {
  /* Extra small mobile devices */
  .nav-container {
    padding: 0 1rem;
  }
  
  .nav-logo {
    font-size: 1.1rem;
  }

  .nav-links {
    gap: 1rem;
  }

  .nav-link {
    font-size: 0.85rem;
  }
  
  .hero {
    padding: 5rem 1rem 2rem;
  }
  
  .hero-label {
    font-size: 0.75rem;
    margin-bottom: 1.5rem;
  }
  
  .hero-title {
    margin-bottom: 1rem;
  }
  
  .hero-description {
    font-size: 0.95rem;
  }
  
  .section-label {
    font-size: 0.75rem;
  }
  
  .about,
  .work,
  .contact {
    padding: 3rem 1rem;
  }
  
  .about-decoration {
    width: 100px;
    height: 100px;
    bottom: -10px;
    right: -10px;
  }
  
  .project-card {
    padding: 1.25rem;
  }
  
  .contact-form-container {
    padding: 1.25rem;
  }
  
  .contact-label {
    font-size: 0.75rem;
  }
}

/* Touch device optimizations */
@media (hover: none) and (pointer: coarse) {
  /* Increase tap targets for touch devices */
  .nav-link {
    padding: 0.5rem;
    margin: -0.5rem;
  }
  
  .btn-primary,
  .btn-secondary {
    min-height: 48px;
  }
  
  .project-link {
    padding: 0.5rem 0;
    margin: -0.5rem 0;
  }
  
  .contact-item {
    min-height: 60px;
  }
  
  /* Disable hover effects on touch devices */
  .project-card:hover {
    transform: none;
  }
  
  .btn-primary:hover {
    transform: none;
  }
  
  .btn-secondary:hover {
    transform: none;
  }
}

/* Landscape mobile optimization */
@media (max-width: 900px) and (max-height: 500px) and (orientation: landscape) {
  .hero {
    min-height: auto;
    padding: 4rem 1.5rem 2rem;
  }
  
  .hero-scroll {
    display: none;
  }
  
  .nav {
    padding: 1rem 0;
  }
}