:root {
  --bg-color: #0b0b0b;
  --text-color: #e0e0e0;
  --primary-color: #9d00ff; /* Neon Violet */
  --secondary-color: #39ff14; /* Neon Green */
  --accent-color: #ff0055; /* Alert Red */
  --font-mono: "JetBrains Mono", "Courier New", monospace;
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;
  --transition: all 0.3s cubic-bezier(0.645, 0.045, 0.355, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--bg-color);
  color: var(--text-color);
  font-family: var(--font-sans);
  line-height: 1.6;
  overflow-x: hidden;
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--text-color);
}

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

ul {
  list-style: none;
}

/* Utilities */
.section-title {
  font-size: 2rem;
  margin-bottom: 2rem;
  display: flex;
  align-items: center;
  color: var(--text-color);
}

.section-number {
  color: var(--primary-color);
  margin-right: 10px;
  font-family: var(--font-mono);
}

.section-title::after {
  content: "";
  display: block;
  width: 200px;
  height: 1px;
  background-color: var(--primary-color);
  margin-left: 20px;
  opacity: 0.5;
}

.cta-button {
  display: inline-block;
  padding: 12px 24px;
  border: 1px solid var(--primary-color);
  color: var(--primary-color);
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 1px;
  background: transparent;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.cta-button:hover {
  background: rgba(157, 0, 255, 0.1);
  box-shadow: 0 0 15px rgba(157, 0, 255, 0.4);
  transform: translateY(-2px);
}

/* Scanline Effect */
.scanline {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    to bottom,
    rgba(255, 255, 255, 0),
    rgba(255, 255, 255, 0) 50%,
    rgba(0, 0, 0, 0.1) 50%,
    rgba(0, 0, 0, 0.1)
  );
  background-size: 100% 4px;
  pointer-events: none;
  z-index: 9999;
  opacity: 0.3;
}

/* Header */
header {
  position: fixed;
  top: 0;
  width: 100%;
  padding: 20px 50px;
  background: rgba(11, 11, 11, 0.85);
  backdrop-filter: blur(10px);
  z-index: 1000;
  border-bottom: 1px solid rgba(157, 0, 255, 0.2);
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  color: var(--primary-color);
  font-weight: bold;
  letter-spacing: -1px;
}

.blink {
  animation: blink 1s infinite;
}

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

.nav-links {
  display: flex;
  gap: 30px;
}

.nav-links a {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--text-color);
}

.nav-links a:hover,
.nav-links a:focus {
  color: var(--primary-color);
  text-shadow: 0 0 8px var(--primary-color);
  outline: none;
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 5px;
}

.hamburger span {
  width: 25px;
  height: 2px;
  background-color: var(--primary-color);
  transition: var(--transition);
}

.hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(7px, 7px);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -7px);
}

.hamburger:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: 4px;
}

/* Hero Section */
#hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 100px;
  padding-top: 80px;
}

.hero-content {
  max-width: 600px;
}

.overline {
  font-family: var(--font-mono);
  color: var(--secondary-color);
  margin-bottom: 20px;
  font-size: 14px;
}

#hero h1 {
  font-size: 4rem;
  line-height: 1.1;
  margin-bottom: 10px;
  color: var(--text-color);
}

#hero h2 {
  font-size: 3rem;
  color: #8892b0;
  margin-bottom: 20px;
}

.hero-desc {
  font-size: 1.1rem;
  color: #8892b0;
  max-width: 500px;
  margin-bottom: 40px;
}

.hero-visual {
  position: relative;
}

.profile-img {
  width: 300px;
  height: 300px;
  object-fit: cover;
  position: relative;
  z-index: 2;
  border: 2px solid var(--primary-color);
  box-shadow: 10px 10px 0 var(--secondary-color);
  transition: var(--transition);
}

.profile-img:hover {
  transform: translate(-5px, -5px);
  box-shadow: 15px 15px 0 var(--secondary-color);
}

/* About Section */
#about {
  padding: 100px;
  max-width: 1000px;
  margin: 0 auto;
}

.about-content {
  display: grid;
  grid-template-columns: 3fr 1fr;
  gap: 50px;
}

.bio p {
  margin-bottom: 15px;
  color: #8892b0;
}

.skills-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  margin-top: 20px;
}

.skills-list li {
  position: relative;
  padding-left: 20px;
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--text-color);
}

.skills-list li::before {
  content: "▹";
  position: absolute;
  left: 0;
  color: var(--primary-color);
}

.cv-download {
  display: flex;
  align-items: flex-start;
  justify-content: center;
}

.cv-button {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 15px 20px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--text-color);
  font-family: var(--font-mono);
  font-size: 12px;
}

.cv-button:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--primary-color);
  color: var(--primary-color);
}

/* Projects Section */
#projects {
  padding: 100px;
  max-width: 1200px;
  margin: 0 auto;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 30px;
}

.project-card {
  background: #111;
  border: 1px solid #333;
  padding: 20px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.project-card:hover {
  transform: translateY(-5px);
  border-color: var(--primary-color);
  box-shadow: 0 10px 30px -15px rgba(2, 12, 27, 0.7);
}

.project-image {
  width: 100%;
  height: 200px;
  object-fit: contain;
  object-position: center;
  margin-bottom: 20px;
  background-color: #0b0b0b;
  border: 1px solid #333;
  padding: 10px;
  filter: grayscale(100%);
  transition: var(--transition);
}

.project-card:hover .project-image {
  filter: grayscale(0%);
}

.project-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--primary-color);
  transform: scaleX(0);
  transform-origin: left;
  transition: var(--transition);
}

.project-card:hover::before {
  transform: scaleX(1);
  filter: grayscale(0%);
}

.project-title {
  font-size: 1.4rem;
  margin-bottom: 10px;
  color: var(--text-color);
}

.project-desc {
  font-size: 0.9rem;
  color: #8892b0;
  margin-bottom: 20px;
  height: 80px; /* limit height */
  overflow: hidden;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 20px;
}

.tag {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--primary-color);
}

.project-links {
  display: flex;
  gap: 15px;
}

.project-links a {
  font-size: 1.2rem;
}

.project-links a:hover {
  color: var(--primary-color);
}

/* Contact Section */
#contact {
  padding: 100px 20px;
  text-align: center;
  max-width: 600px;
  margin: 0 auto;
  margin-bottom: 100px;
}

.contact-content p {
  color: #8892b0;
  margin-bottom: 40px;
  font-size: 1.1rem;
}

.email-btn {
  font-size: 1.2rem;
  padding: 20px 40px;
}

.social-links {
  margin-top: 50px;
  display: flex;
  justify-content: center;
  gap: 30px;
}

.social-links a {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--text-color);
  position: relative;
}

.social-links a::after {
  content: "";
  display: block;
  width: 0;
  height: 1px;
  background: var(--primary-color);
  transition: width 0.3s;
}

.social-links a:hover::after {
  width: 100%;
}

/* Footer */
footer {
  text-align: center;
  padding: 20px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: #8892b0;
  border-top: 1px solid #333;
}

/* Responsive */
@media (max-width: 768px) {
  header {
    padding: 20px;
  }

  .hamburger {
    display: flex;
  }

  .nav-links {
    position: fixed;
    right: -100%;
    top: 80px;
    flex-direction: column;
    background-color: rgba(11, 11, 11, 0.98);
    width: 100%;
    max-width: 300px;
    text-align: center;
    transition: right 0.3s ease-in-out;
    box-shadow: -5px 0 15px rgba(0, 0, 0, 0.5);
    border-left: 1px solid var(--primary-color);
    padding: 30px 0;
    gap: 0;
  }

  .nav-links.active {
    right: 0;
  }

  .nav-links li {
    padding: 15px 0;
    border-bottom: 1px solid rgba(157, 0, 255, 0.1);
  }

  .nav-links li:last-child {
    border-bottom: none;
  }

  #hero {
    flex-direction: column-reverse;
    text-align: center;
    padding: 100px 20px;
    justify-content: center;
  }

  .hero-content {
    margin-top: 50px;
  }

  #hero h1 {
    font-size: 3rem;
  }

  #hero h2 {
    font-size: 2rem;
  }

  .about-content {
    grid-template-columns: 1fr;
  }

  #about,
  #projects {
    padding: 80px 20px;
  }

  .profile-img {
    width: 200px;
    height: 200px;
  }

  .section-title::after {
    width: 100px;
  }
}

/* Focus states for better accessibility */
a:focus,
button:focus,
.cta-button:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: 4px;
}

.cta-button:focus {
  background: rgba(157, 0, 255, 0.1);
}