:root {

  --primary-color: #007acc;

  --secondary-color: #00a86b;

  --text-color: #333;

  --bg-color: #fff;

  --light-bg: #f4f4f4;

  --dark-bg: #1e1e1e;

  --transition-duration: 0.3s;

  --light-mode-bg:url('https://i.postimg.cc/65yfNxxp/duplo27.jpg');

  --dark-mode-bg: url('https://i.postimg.cc/gjbx8nf9/840843081452.jpg');

  --light-subtext-color: #666;

  --dark-subtext-color: #ccc;

}

* {

  margin: 0;

  padding: 0;

  box-sizing: border-box;

}

body {

  font-family: 'Open Sans', sans-serif;

  line-height: 1.6;

  color: var(--text-color);

  background-image: var(--light-mode-bg);

  background-size: cover;

  background-repeat: no-repeat;

  background-attachment: fixed;

  background-position: center;

  transition: background-color var(--transition-duration), color var(--transition-duration), background-image 0.5s ease-in-out;

  scroll-behavior: smooth;

}

.container {

  max-width: 1200px;

  margin: 0 auto;

  padding: 0 20px;

}

header {

  background-color: var(--bg-color);

  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);

  position: fixed;

  width: 100%;

  z-index: 1000;

  transition: background-color var(--transition-duration);

}

nav {

  display: flex;

  justify-content: space-between;

  align-items: center;

  padding: 20px 0;

}

.logo {

  font-size: 24px;

  font-weight: 700;

  color: var(--primary-color);

  text-decoration: none;

}

.logo img {

  height: 50px; 
  transition: transform 0.3s ease, opacity 0.3s ease;

  margin: 0; 

  display: block;
}

.logo img:hover {

  transform: scale(1.1);

  opacity: 0.8;

}

.nav-links {

  display: flex;

  list-style: none;

}

.nav-links li {

  margin-left: 30px;

}

.nav-links a {

  color: var(--text-color);

  text-decoration: none;

  font-weight: 600;

  transition: color var(--transition-duration);

  display: inline-block;

  padding: 10px 15px;

  border-radius: 5px;

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

}

.nav-links a:hover {

  color: var(--primary-color);

  background-color: rgba(0, 0, 0, 0.1);

  transform: translateY(-5px);

  box-shadow: 0 5px 10px rgba(0, 0, 0, 0.1);

}

.dark-mode-toggle {

  background: none;

  border: none;

  cursor: pointer;

  font-size: 24px;

  color: var(--text-color);

  transition: color var(--transition-duration);

}

.hero-uni{

   color: rgb(0, 183, 255);

   height: 100vh;

   font-size: 30px;

   display: flex;

   justify-content: center;

   align-items: center;

}

.but{

  position: absolute;

  border-radius: 8px;

  margin-top: 240px;

}

.but a{

  text-decoration: none;

  color: whitesmoke;

}

.get-st{

  width: 120px;

  height: 40px;

  background-color: #4190c5;

  border-radius: 8px;

}

span{

  color: orange;

}

.hero-background {

  position: absolute;

  top: 0;

  left: 0;

  width: 100%;

  height: 100%;

  z-index: -100;

}

.hero-background img {

  position: absolute;

  top: 0;

  left: 0;

  width: 100%;

  height: 100%;

  object-fit: cover;

  opacity: 0;

  transition: opacity 1s ease-in-out;

}

.hero-background img.active {

  opacity: 1;

}

.ho-conteernt{

  z-index: 1000000;

}

.hero::before {

  content: '';

  position: absolute;

  top: 0;

  left: 0;

  right: 0;

  bottom: 0;

  z-index: 0;

}

.hero-content {

  position: relative;

  z-index: 1;

  color: #fff;

  max-width: 600px;

  opacity: 0;

  transform: translateY(50px);

  transition: opacity 1s ease-out, transform 1s ease-out;

}

.hero-content.active {

  opacity: 1;

  transform: translateY(0);

}

.hero h1 {

  font-size: 48px;

  margin-bottom: 20px;

  animation: fadeInUp 1s ease-out;

}

.hero p {

  font-size: 18px;

  margin-bottom: 20px;

  animation: fadeInUp 1.5s ease-out;

}

.btn {

  text-decoration: none;
  display: inline-block;

  padding: 10px 20px;

  font-size: 18px;

  color: #fff;

  background-color: var(--primary-color);

  border: none;

  border-radius: 5px;

  cursor: pointer;

  transition: background-color var(--transition-duration), transform 0.3s ease, box-shadow 0.3s ease;

}

.btn:hover {

  background-color: #005fa3;

  transform: translateY(-5px);

  box-shadow: 0 5px 10px rgba(0, 0, 0, 0.1);

  text-decoration: none; 

}

section {

  padding: 80px 0;

}

.section-header {

  text-align: center;

  margin-bottom: 60px;

  animation: fadeInUp 1s ease-out;

}

.section-header h2 {

  font-size: 36px;

  color: var(--primary-color);

  margin-bottom: 20px;

}

.section-header p {

  font-size: 18px;

  color: var(--light-subtext-color);

  max-width: 600px;

  margin: 0 auto;

  transition: color var(--transition-duration);

}

.features {

  display: flex;

  justify-content: space-between;

  flex-wrap: wrap;

}

.feature {

  flex-basis: calc(33.333% - 30px);

  background-color: var(--light-bg);

  padding: 30px;

  border-radius: 10px;

  text-align: center;

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

  margin-bottom: 30px;

  animation: fadeInUp 1.5s ease-out;

}

.feature:hover {

  transform: translateY(-10px);

  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);

}

.feature i {

  font-size: 48px;

  color: var(--primary-color);

  margin-bottom: 20px;

}

.feature h3 {

  font-size: 24px;

  margin-bottom: 15px;

}

.feature p {

  font-size: 16px;

}

.feature img {

  width: 100%;

  height: auto;

  display: block;

}

.accordion {

  max-width: 800px;

  margin: 0 auto;

}

.accordion-item {

  background-color: var(--light-bg);

  border-radius: 10px;

  margin-bottom: 10px;

  overflow: hidden;

  transition: max-height var(--transition-duration);

  animation: slideIn 1s ease-out;

}

.accordion-header {

  display: flex;

  justify-content: space-between;

  align-items: center;

  padding: 20px;

  cursor: pointer;

  background-color: var(--primary-color);

  color: #fff;

}

.accordion-content {

  padding: 20px;

  display: none;

  background-color: yellow;

}

.accordion-content p {

  margin: 0;

}

.accordion-item.active .accordion-content {

  display: block;

}

.cta {

  background-color: var(--primary-color);

  color: #fff;

  text-align: center;

  padding: 80px 0;

}

.cta h2 {

  font-size: 36px;

  margin-bottom: 30px;

}

.cta .btn {

  background-color: #fff;

  color: var(--primary-color);

  text-decoration: none; 

}

.cta .btn:hover {

  background-color: var(--light-bg);

  text-decoration: none; 

}

footer {

  background-color: var(--dark-bg);

  color: #fff;

  padding: 60px 0;

}

.footer-content {

  display: flex;

  justify-content: space-between;

  flex-wrap: wrap;

}

.footer-section {

  flex-basis: calc(25% - 30px);

  margin-bottom: 30px;

}

.footer-section h3 {

  font-size: 18px;

  margin-bottom: 20px;

}

.footer-section ul {

  list-style: none;

}

.footer-section ul li {

  margin-bottom: 10px;

}

.footer-section ul li a {

  color: #ccc;

  text-decoration: none;

  transition: color var(--transition-duration);

}

.footer-section ul li a:hover {

  color: #fff;

}

.social-icons {

  display: flex;

  margin-top: 20px;

}

.social-icons a {

  display: inline-block;

  width: 40px;

  height: 40px;

  background-color: rgba(255, 255, 255, 0.1);

  border-radius: 50%;

  margin-right: 10px;

  display: flex;

  align-items: center;

  justify-content: center;

  transition: background-color var(--transition-duration);

}

.social-icons a:hover {

  background-color: var(--primary-color);

}

.back-to-top {

  position: fixed;

  bottom: 20px;

  right: 20px;

  background-color: var(--primary-color);

  color: #fff;

  border: none;

  border-radius: 50%;

  width: 50px;

  height: 50px;

  display: flex;

  align-items: center;

  justify-content: center;

  cursor: pointer;

  transition: background-color var(--transition-duration);

  display: none;

}

.back-to-top:hover {

  background-color: #005fa3;

}


@keyframes fadeInUp {

  from {

    opacity: 0;

    transform: translateY(30px);

  }

  to {

    opacity: 1;

    transform: translateY(0);

  }

}

@keyframes slideIn {

  from {

    opacity: 0;

    transform: translateX(-100%);

  }

  to {

    opacity: 1;

    transform: translateX(0);

  }

}

@keyframes bounceIn {

  from {

    opacity: 0;

    transform: scale(0.5);

  }

  to {

    opacity: 1;

    transform: scale(1);

  }

}


@media (max-width: 768px) {

  .nav-links {

    display: none;

  }

  .feature {

    flex-basis: 100%;

  }

  .footer-section {

    flex-basis: 100%;

  }

}


body.dark-mode {

  background-color: var(--dark-bg);

  color: #fff;

  background-image: var(--dark-mode-bg);

  transition: background-color var(--transition-duration), color var(--transition-duration), background-image 0.5s ease-in-out;

}

body.dark-mode header {

  background-color: var(--dark-bg);

}

body.dark-mode .nav-links a {

  color: #fff;

}

body.dark-mode .dark-mode-toggle {

  color: #fff;

}

body.dark-mode .hero::before {

  background: rgba(0, 0, 0, 0.7);

}

body.dark-mode .feature {

  background-color: var(--dark-bg);

  color: #fff;

}

body.dark-mode .accordion-header {

  background-color: var(--secondary-color);

}

body.dark-mode .accordion-content {

  background-color: var(--dark-bg);

}

body.dark-mode .cta {

  background-color: var(--secondary-color);

}

body.dark-mode .footer-section ul li a {

  color: #fff;

}

body.dark-mode .section-header p {

  color: var(--dark-subtext-color);

}

.intro-logo {

  width: 80vw; 

  max-width: 800px; 

  height: auto;

  opacity: 0;

  transform: scale(1.2);

  animation: logoFadeIn 1.5s forwards, logoScaleDown 1.5s forwards;

}


#intro-animation {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(255, 255, 255, 0);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999; 
  opacity: 1;
  transition: opacity 1.5s ease-out;
}

#intro-animation.fade-out {
  opacity: 0;
}


.intro-logo {
  width: 80vw;
  max-width: 800px;
  height: auto;
  opacity: 0;
  transform: scale(1.2); 
  animation: logoFadeIn 1.5s forwards, logoScaleDown 1.5s forwards;
}


@keyframes logoFadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}


@keyframes logoScaleDown {
  from {
    transform: scale(1.2);
  }
  to {
    transform: scale(1);
  }
}


.blur {
  filter: blur(5px);
  transition: filter 1.5s ease-out;
}

@media (max-width: 600px) {
  .intro-logo {
    width: 90vw; 
  }
}