:root{
  --header-bg: rgba(8, 8, 8, 0.95);
  --header-border: rgba(0, 255, 238, 0.2);
  --main-color: #00ffee;
  --light-color: #f8f9fa;
  --hover-glow: rgba(0, 255, 238, 0.4);
  --text-color: #e0e0e0;
  --primary-color: #3a86ff;
  --btn-primary: linear-gradient(135deg, #007cf0 0%, #00dfd8 100%);
}
#main-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background-color: var(--header-bg);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--header-border);
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.1);
  transform: translateY(0);
  opacity: 1;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
  height: auto;
  min-height: 60px;
  animation: fadeInDown 0.6s ease forwards, glowPulse 4s infinite ease-in-out;
}

.header-container {
  max-width: 1200px;
  margin: auto;
  padding: 0.5rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 60px;
}

#main-header.scrolled .header-container {
  padding: 0.5rem 2rem;
}

.logo {
  font-size: 1.5rem;
  font-weight: bold;
  color: var(--main-color);
  letter-spacing: 1.5px;
  transition: color 0.3s ease;
}

.logo-text {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--light-color);
  letter-spacing: 1.5px;
  transition: all 0.3s ease;
  position: relative;
}

.logo-dot {
  color: var(--main-color);
  font-size: 2rem;
  font-weight: 900;
  transition: all 0.3s ease;
}

.logo:hover .logo-text {
  color: var(--main-color);
  text-shadow: 0 0 10px var(--hover-glow);
}

.logo:hover .logo-dot {
  transform: scale(1.3);
  text-shadow: 0 0 15px var(--main-color);
}

.nav {
  display: flex;
  gap: 1.8rem;
  align-items: center;
  height: 100%;
}

.nav a {
  color: #ccc;
  text-decoration: none;
  font-size: 0.9rem;
  position: relative;
  transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  padding: 6px 0;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-weight: 500;
  height: fit-content;
}

.nav-link {
  color: var(--text-color);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  position: relative;
  padding: 0.5rem 0.2rem;
  overflow: hidden;
  transition: all 0.3s ease;
  letter-spacing: 0.5px;
}

.nav-link span {
  position: relative;
  z-index: 2;
  transition: all 0.3s ease;
}

.nav a::before {
  content: "";
  position: absolute;
  width: 6px;
  height: 6px;
  bottom: -3px;
  left: 50%;
  background: var(--main-color);
  border-radius: 50%;
  transform: translateX(-50%) scale(0);
  transition: transform 0.3s ease;
  box-shadow: 0 0 10px var(--main-color);
  z-index: 2;
}

.nav a::after {
  content: "";
  position: absolute;
  width: 0;
  height: 1px;
  bottom: 0;
  left: 50%;
  background: linear-gradient(
    90deg,
    transparent,
    var(--main-color),
    var(--primary-color),
    transparent
  );
  transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  transform: translateX(-50%);
  opacity: 0;
}

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

.nav a:hover::before {
  transform: translateX(-50%) scale(1);
}

.nav a:hover::after {
  width: 100%;
  opacity: 1;
}

.nav-link.active {
  color: var(--main-color);
}

.nav a.active::before {
  transform: translateX(-50%) scale(1);
}

.nav a.active::after {
  width: 100%;
  opacity: 1;
}

.scroll-progress {
  position: absolute;
  bottom: 0;
  left: 0;
  height: 3px;
  width: 0%;
  background: var(--btn-primary);
  box-shadow: 0 0 10px var(--main-color);
  transition: width 0.2s ease;
  z-index: 1001;
}

.menu-icon {
  width: 30px;
  height: 25px;
  position: relative;
  cursor: pointer;
  display: none;
  flex-direction: column;
  justify-content: space-between;
  z-index: 1001;
}

.menu-icon .bar {
  width: 100%;
  height: 3px;
  background-color: var(--main-color);
  border-radius: 2px;
  transition: all 0.3s ease;
}

.menu-icon:hover .bar {
  background-color: var(--light-color);
  box-shadow: 0 0 8px var(--hover-glow);
}

.menu-icon.active .bar:nth-child(1) {
  transform: translateY(11px) rotate(45deg);
}

.menu-icon.active .bar:nth-child(2) {
  opacity: 0;
}

.menu-icon.active .bar:nth-child(3) {
  transform: translateY(-11px) rotate(-45deg);
}

@media (max-width: 920px) {
  .menu-icon {
    display: flex;
  }

  .logo-text {
    font-size: 1.2rem;
  }

  .logo-dot {
    font-size: 1.5rem;
  }

  .nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background-color: rgba(10, 10, 10, 0.98);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    flex-direction: column;
    align-items: flex-start;
    justify-content: flex-start;
    padding: 100px 2rem 2rem;
    transition: right 0.5s cubic-bezier(0.77, 0.2, 0.05, 1);
    box-shadow: -5px 0 25px rgba(0, 0, 0, 0.5);
    border-left: 1px solid var(--main-color);
    z-index: 999;
  }

  .nav.show {
    right: 0;
  }

  .nav-link {
    width: 100%;
    padding: 1rem 0;
    font-size: 1.1rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  }

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

  .nav-link::before {
    height: 100%;
    width: 5px;
    left: -5px;
    transform: translateX(-100%);
  }

  .nav-link:hover::before {
    transform: translateX(0);
  }

  .header-container {
    padding: 1rem 1.5rem;
  }

  #main-header.scrolled .header-container {
    padding: 0.5rem 1.5rem;
  }
}

@media (max-width: 480px) {
  .logo-text {
    font-size: 1rem;
  }

  .nav {
    width: 100%;
  }
}

@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes glowPulse {
  0%,
  100% {
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
  }
  50% {
    box-shadow: 0 5px 25px rgba(0, 255, 238, 0.1);
  }
}