:root {
  --color1: #001F3F; 
  --color2: #F0F8FF; 
  --color3: #144066; 
  --color4: #00FF7F; 
  --color5: #A9A9A9; 
 }

 
 body {
  font-family: 'IBM Plex Sans', "Helvetica Neue", Helvetica, Arial, sans-serif;
  background-color: var(--color2);
  color: var(--color3);
  overflow-x: hidden;
 }

 
 .text-color1 {
  color: var(--color1);
 }
 .text-color2 {
  color: var(--color2);
 }
 .text-color3 {
  color: var(--color3);
 }
 .text-color4 {
  color: var(--color4);
 }
 .text-color5 {
  color: var(--color5);
 }

 .bg-color1 {
  background-color: var(--color1);
 }
 .bg-color2 {
  background-color: var(--color2);
 }
 .bg-color3 {
  background-color: var(--color3);
 }
 .bg-color4 {
  background-color: var(--color4);
 }
 .bg-color5 {
  background-color: var(--color5);
 }

 
 .parallax-bg-image {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover; 
  z-index: -1;
  transition: transform 0.2s ease-out;
 }

 
 .decorative-line {
  width: 80px;
  height: 4px;
  background-color: var(--color4);
  margin-top: 1rem;
  margin-bottom: 1rem;
  transform: translateX(-50px);
  opacity: 0;
  transition: transform 1s cubic-bezier(0.23, 1, 0.32, 1),
  opacity 1s cubic-bezier(0.23, 1, 0.32, 1);
 }

 .decorative-shape {
  position: absolute;
  width: 200px;
  height: 200px;
  background-color: var(--color5);
  opacity: 0.3;
  border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%;
  z-index: -1;
  transition: transform 1.5s cubic-bezier(0.19, 1, 0.22, 1),
  opacity 1s ease-out;
 }

 
 .reveal-on-scroll {
  opacity: 0;
  transform: translateY(50px);
  transition: opacity 1.2s cubic-bezier(0.165, 0.84, 0.44, 1),
  transform 1.2s cubic-bezier(0.165, 0.84, 0.44, 1);
 }

 .reveal-on-scroll.is-visible {
  opacity: 1;
  transform: translateY(0);
 }

 
 .reveal-delay-1 {
  transition-delay: 0.15s;
 }
 .reveal-delay-2 {
  transition-delay: 0.3s;
 }
 .reveal-delay-3 {
  transition-delay: 0.45s;
 }
 .reveal-delay-4 {
  transition-delay: 0.6s;
 }

 
 #mobile-menu {
  transition: transform 0.4s cubic-bezier(0.23, 1, 0.32, 1);
  transform: translateX(100%);
  z-index: 60;
 }

 #mobile-menu.is-open {
  transform: translateX(0);
 }

 
 #mobile-menu-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: 55;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
 }

 #mobile-menu-overlay.is-visible {
  opacity: 1;
  visibility: visible;
 }

 
 @media (max-width: 767px) {
  #mobile-menu {
  max-width: 85vw;
  box-shadow: -10px 0 30px rgba(0, 0, 0, 0.3);
  }

  #mobile-menu nav a {
  font-size: 1.5rem;
  padding: 1rem 0;
  border-bottom: 1px solid rgba(20, 64, 102, 0.1); 
  transition: all 0.3s ease;
  }

  #mobile-menu nav a:hover {
  background-color: rgba(20, 64, 102, 0.05); 
  padding-left: 1rem;
  }

  #mobile-menu nav a:last-child {
  border-bottom: none;
  }
 }

 
 @media (max-width: 767px) {
  #burger-btn {
  padding: 0.5rem;
  border-radius: 0.375rem;
  transition: background-color 0.3s ease;
  }

  #burger-btn:hover {
  background-color: rgba(20, 64, 102, 0.1); 
  }

  #burger-btn.is-open {
  background-color: rgba(20, 64, 102, 0.1); 
  }
 }

 
 .burger-line {
  transition: all 0.3s ease-in-out;
 }
 #burger-btn.is-open .burger-line-1 {
  transform: rotate(45deg) translate(5px, 6px);
 }
 #burger-btn.is-open .burger-line-2 {
  opacity: 0;
 }
 #burger-btn.is-open .burger-line-3 {
  transform: rotate(-45deg) translate(5px, -6px);
 }

 
 #contact-notification {
  position: fixed;
  bottom: -100%;
  left: 50%;
  transform: translateX(-50%);
  transition: bottom 0.6s cubic-bezier(0.23, 1, 0.32, 1);
  z-index: 100;
 }

 #contact-notification.is-visible {
  bottom: 2rem;
 }