:root {
  /* Color palette */
  --primary-color: #00ff9d; /* Neon green */
  --dark-bg: #121212;
  --light-text: #f0f0f0;
  --overlay-color: rgba(0, 0, 0, 0.8);
  --hover-glow: 0 0 10px var(--primary-color);

  /* Typography */
  --font-main: 'Lexend Deca', 'Courier New', monospace;

  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 3rem;
  --spacing-xl: 5rem;

  --transition-fast: 0.2s ease;
  --transition-medium: 0.3s ease;
  --transition-slow: 0.5s ease;

  --border-radius-sm: 5px;
  --border-radius-md: 10px;
  --border-radius-lg: 24px;
  --border-radius-circle: 50%;
}

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

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

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

/* Terminal-like text effect */
.terminal-text {
  border-right: 0.15em solid var(--primary-color);
  white-space: nowrap;
  overflow: hidden;
  animation: typing 3.5s steps(40, end), blink-caret 0.75s step-end infinite;
}

@keyframes typing {
  from { width: 0 }
  to { width: 100% }
}

@keyframes blink-caret {
  from, to { border-color: transparent }
  50% { border-color: var(--primary-color) }
}

.section-hero {
  position: relative;
  width: 100%;
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  flex-flow: column nowrap;
}

.section-hero img,
.section-hero h1,
.section-hero h2 {
  z-index: 1;
  color: var(--light-text);
}

.section-hero img {
  border-radius: var(--border-radius-circle);
  margin-bottom: var(--spacing-md);
  width: 210px;
  border: 3px solid var(--primary-color);
  box-shadow: 0 0 15px rgba(0, 255, 157, 0.5);
  transition: var(--transition-medium);
}

.section-hero img:hover {
  transform: scale(1.05);
  box-shadow: 0 0 25px rgba(0, 255, 157, 0.8);
}

.section-hero h1 {
  text-align: center;
  font-size: 3rem;
  margin-bottom: var(--spacing-sm);
  text-shadow: 0 0 5px rgba(240, 240, 240, 0.5);
}

.section-hero h2 {
  font-size: 2.5rem;
  margin: 0;
  color: var(--primary-color);
}

#typed::after {
  content: '|';
  color: var(--primary-color);
  animation: blink infinite 1s;
}

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

.video-container {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.color-overlay {
  position: absolute;
  left: 0;
  top: 0;
  background-color: var(--overlay-color);
  width: 100%;
  height: 100vh;
}

video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 70px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--spacing-md);
  z-index: 100;
  backdrop-filter: blur(5px);
  background-color: rgba(18, 18, 18, 0.7);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
  transition: var(--transition-medium);
}

.navbar.scrolled {
  height: 60px;
  background-color: rgba(18, 18, 18, 0.9);
}

.logo {
  letter-spacing: 3.4px;
  font-size: 1.5rem;
  font-weight: bold;
  color: var(--primary-color);
  text-shadow: 0 0 5px rgba(0, 255, 157, 0.5);
}

.logo a:hover {
  text-shadow: 0 0 10px rgba(0, 255, 157, 0.8);
}

.navbar-icons {
  display: flex;
  gap: var(--spacing-md);
  font-size: 1.5rem;
  z-index: 101;
}

.navbar-icons a {
  color: var(--light-text);
  transition: var(--transition-fast);
}

.navbar-icons a:hover {
  color: var(--primary-color);
  transform: translateY(-3px);
  text-shadow: var(--hover-glow);
}

/* Burger Menu */
.burger-menu {
  display: none;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
  width: 30px;
  height: 24px;
  position: relative;
  z-index: 101;
}

.burger-line {
  display: block;
  width: 100%;
  height: 3px;
  background-color: var(--primary-color);
  margin: 5px 0;
  transition: var(--transition-medium);
  border-radius: 3px;
}

/* Active state for burger menu */
.burger-menu.active .burger-line:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
  background-color: var(--primary-color);
}

.burger-menu.active .burger-line:nth-child(2) {
  opacity: 0;
}

.burger-menu.active .burger-line:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
  background-color: var(--primary-color);
}

/* Menu overlay for the burger menu */
.menu-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.7);
  z-index: 99;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
  backdrop-filter: blur(3px);
}

.menu-overlay.active {
  opacity: 1;
  visibility: visible;
}

.section-contact {
  background-color: var(--dark-bg);
  padding: var(--spacing-xl), 0;
}

.section-contact h1 {
  color: var(--primary-color);
  text-align: center;
  margin-bottom: var(--spacing-lg);
  margin-top: var(--spacing-lg);
  font-size: clamp(2rem, 5vw, 3rem);
  text-shadow: 0 0 5px rgba(0, 255, 157, 0.5);
}

.contact-form {
  display: flex;
  flex-flow: column nowrap;
  align-items: center;
  text-align: center;
  padding: var(--spacing-md) 0;
  max-width: 800px;
  margin: 0 auto;
}

.contact-form form {
  width: 100%;
  max-width: 600px;
  padding: 0 var(--spacing-md);
  margin-bottom: var(--spacing-md);
}

.form-field {
  width: 100%;
  margin-bottom: var(--spacing-md);
  padding: var(--spacing-sm);
  font-size: 1rem;
  font-family: inherit;
  background-color: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(0, 255, 157, 0.3);
  border-radius: var(--border-radius-md);
  color: var(--light-text);
  transition: var(--transition-fast);
}

.form-field:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 8px rgba(0, 255, 157, 0.5);
}

.form-field::placeholder {
  color: rgba(240, 240, 240, 0.6);
}

.contact-form input {
  height: 50px;
}

.contact-form textarea {
  resize: none;
  min-height: 150px;
}

.animated-btn {
  font-family: inherit;
  font-size: 1rem;
  font-weight: 600;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--border-radius-lg);
  border: 2px solid var(--primary-color);
  background-color: transparent;
  color: var(--primary-color);
  cursor: pointer;
  transition: var(--transition-medium);
  text-transform: uppercase;
  letter-spacing: 1px;
  position: relative;
  overflow: hidden;
}

.animated-btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(0, 255, 157, 0.2), transparent);
  transition: var(--transition-medium);
}

.animated-btn:hover {
  background-color: var(--primary-color);
  color: var(--dark-bg);
  box-shadow: 0 0 15px rgba(0, 255, 157, 0.5);
}

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

.submit-btn {
  width: auto;
  margin-top: var(--spacing-sm);
}

footer {
  display: flex;
  flex-flow: column nowrap;
  align-items: center;
  text-align: center;
  padding: var(--spacing-md) 0;
  background-color: rgba(0, 0, 0, 0.3);
  border-top: 1px solid rgba(0, 255, 157, 0.2);
}

.footer-icons {
  display: flex;
  gap: var(--spacing-md);
  font-size: 1.5rem;
  margin-bottom: var(--spacing-md);
}

.footer-icons a {
  color: var(--light-text);
  transition: var(--transition-fast);
}

.footer-icons a:hover {
  color: var(--primary-color);
  transform: translateY(-3px);
  text-shadow: var(--hover-glow);
}

.signature {
  font-size: 0.9rem;
  color: var(--light-text);
  transition: var(--transition-fast);
}

.signature:hover {
  color: var(--primary-color);
}

/* Back to Top Button */
#back-to-top {
  visibility: hidden;
  opacity: 0;
  transition: var(--transition-medium);
  position: fixed;
  bottom: var(--spacing-md);
  right: var(--spacing-md);
  z-index: 99;
  border: none;
  border-radius: var(--border-radius-circle);
  outline: none;
  cursor: pointer;
  width: 50px;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  text-decoration: none;
  background-color: var(--primary-color);
  color: var(--dark-bg);
  box-shadow: 0 0 10px rgba(0, 255, 157, 0.5);
}

#back-to-top:hover {
  transform: translateY(-5px);
  box-shadow: 0 0 15px rgba(0, 255, 157, 0.8);
}

/* Animations */
[data-scroll] {
  transition: opacity 1s, transform 0.8s;
}

.fade-in[data-scroll='in'] {
  opacity: 1;
}

.fade-in[data-scroll='out'] {
  opacity: 0;
}

.fade-in-right[data-scroll='in'] {
  opacity: 1;
  transform: translateX(0);
}

.fade-in-right[data-scroll='out'] {
  opacity: 0;
  transform: translateX(50px);
}

.fade-in-left[data-scroll='in'] {
  opacity: 1;
  transform: translateX(0);
}

.fade-in-left[data-scroll='out'] {
  opacity: 0;
  transform: translateX(-50px);
}

/* Matrix-like animation */
.matrix-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 999;
  opacity: 0.05;
  pointer-events: none;
}

/* Responsiveness */
@media (max-width: 768px) {
  .navbar {
    padding: 0 var(--spacing-sm);
  }

  /* Show burger menu and hide navbar icons */
  .burger-menu {
    display: block;
  }

  .navbar-icons {
    position: fixed;
    top: 0;
    right: -100%;
    width: 70%;
    max-width: 300px;
    height: 100vh;
    background-color: rgba(18, 18, 18, 0.95);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: var(--spacing-xl) 0;
    transition: right 0.3s ease;
    backdrop-filter: blur(10px);
    box-shadow: -5px 0 15px rgba(0, 0, 0, 0.3);
    z-index: 100;
  }

  /* When burger menu is active, show navbar icons */
  .navbar-icons.active {
    right: 0;
  }

  .navbar-icons a {
    margin: var(--spacing-md) 0;
    font-size: 1.8rem;
  }

  /* Prevent scrolling when menu is open */
  body.menu-open {
    overflow: hidden;
  }

  .section-hero img {
    width: 150px;
  }

  .section-hero h1 {
    padding: 0 var(--spacing-sm);
  }

  .contact-form form {
    padding: 0 var(--spacing-sm);
  }
}

@media (max-width: 480px) {
  .navbar-icons a {
    margin: var(--spacing-sm) 0;
    font-size: 1.6rem;
  }

  #back-to-top {
    width: 40px;
    height: 40px;
    font-size: 1rem;
  }
}