#header {
  position: fixed;
  top: 24px;
  left: 50%;
  transform: translateX(-50%);

  width: min(1200px, calc(100% - 40px));

  padding: 16px 28px;

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

  border-radius: 24px;

  background: rgba(8, 11, 31, 0.55);

  border: 1px solid rgba(255, 255, 255, 0.08);

  backdrop-filter: blur(18px);

  z-index: 999;

  box-shadow:
    0 10px 40px rgba(0, 0, 0, 0.25),
    inset 0 1px 1px rgba(255, 255, 255, 0.05);
}

/* LEFT */
#left-header {
  display: flex;
  align-items: center;
  gap: 14px;
}

.header-logo {
  width: 52px;
  height: 52px;

  display: flex;
  align-items: center;
  justify-content: center;

  border-radius: 16px;

  background: linear-gradient(
    135deg,
    rgba(0, 245, 255, 0.2),
    rgba(139, 92, 246, 0.25)
  );

  color: #ffffff;
  font-size: 20px;

  box-shadow:
    0 10px 30px rgba(0, 245, 255, 0.12),
    inset 0 1px 1px rgba(255, 255, 255, 0.08);
}

.header-brand {
  display: flex;
  flex-direction: column;
}

.header-brand label {
  color: #ffffff;
  font-size: 18px;
  font-weight: 900;
  letter-spacing: 1px;
}

.header-brand span {
  color: rgba(255, 255, 255, 0.55);
  font-size: 12px;
}

/* NAV */
#nav-menu {
  display: flex;
  align-items: center;
  gap: 10px;
}

#nav-menu a {
  position: relative;

  padding: 12px 18px;

  border-radius: 14px;

  color: rgba(255, 255, 255, 0.72);

  font-size: 14px;
  font-weight: 600;

  text-decoration: none;

  transition: all 0.3s ease;
}

#nav-menu a:hover {
  color: #ffffff;
  background: rgba(255, 255, 255, 0.06);
}

#nav-menu a::after {
  content: "";

  position: absolute;
  left: 18px;
  bottom: 8px;

  width: 0;
  height: 2px;

  border-radius: 999px;

  background: #00f5ff;

  transition: width 0.3s ease;
}

#nav-menu a:hover::after {
  width: calc(100% - 36px);
}

/* BUTTON */
.header-actions {
  display: flex;
  align-items: center;
}

.header-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;

  padding: 14px 22px;

  border-radius: 16px;

  background: linear-gradient(135deg, #00f5ff, #8b5cf6);

  color: #050816;

  font-size: 14px;
  font-weight: 800;

  text-decoration: none;

  transition:
    transform 0.3s ease,
    box-shadow 0.3s ease;
}

.header-btn:hover {
  transform: translateY(-3px);

  box-shadow: 0 10px 30px rgba(0, 245, 255, 0.3);
}

/* MOBILE */
#menu-toggle {
  display: none;

  width: 48px;
  height: 48px;

  border: none;
  border-radius: 14px;

  background: rgba(255, 255, 255, 0.06);

  color: #ffffff;

  font-size: 18px;

  cursor: pointer;
}

@media (max-width: 992px) {
  #nav-menu,
  .header-actions {
    display: none;
  }

  #menu-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
  }

  #header {
    padding: 14px 18px;
  }
}