body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  overflow-x: hidden;
  background-color: #000;
  color: #fff;
}

header {
  background: #333;
  color: #fff;
  padding: 10px 0;
  position: fixed;
  width: 100%;
  top: 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 1000;
}

header .logo img {
  height: 50px;
  margin-left: 20px;
  border-radius: 50%;
}

header nav {
  display: flex;
  align-items: center;
}

header nav .menu-toggle {
  display: none;
  font-size: 1.5em;
  margin-right: 20px;
  cursor: pointer;
}

header nav ul {
  list-style: none;
  display: flex;
  justify-content: center;
  margin: 0;
  padding: 0;
}

header nav ul li {
  margin: 0 15px;
}

header nav ul li a {
  color: #fff;
  text-decoration: none;
  font-weight: bold;
}

.hero {
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: #fff;
  position: relative;
  overflow: hidden;
  padding-top: 60px;
}

.hero-video {
  position: absolute;
  top: 20px;
  left: 0;
  width: 100%;
  height: calc(100% - 60px);
  object-fit: cover;
  z-index: -1;
}

.video-thumbnail {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.7);
}

.video-thumbnail img {
  width: 100%;
  height: auto;
  object-fit: cover;
}

.hero-content {
  z-index: 1;
  animation: fadeIn 2s;
}

.hero-content:hover {
  transform: scale(1.05);
}  

.hero h1 {
  font-size: 4em;
  margin: 0;
}

.hero p {
  font-size: 1.5em;
}

.hero .cta {
  background: #fff;
  color: #000;
  padding: 10px 20px;
  text-decoration: none;
  margin-top: 20px;
  border-radius: 5px;
}

section {
  padding: 60px 20px;
  text-align: center;
}

section h2 {
  font-size: 2.5em;
  margin-bottom: 20px;
}

.skills-container {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.skill {
  width: 80%;
  margin: 15px 0;
}

.skill label {
  font-size: 1.2em;
  margin-bottom: 5px;
  display: block;
}

.skill-bar {
  width: 100%;
  background: #555;
  border-radius: 5px;
  overflow: hidden;
}

.skill-level {
  height: 20px;
  background: #fff;
  border-radius: 5px;
  width: 0;
  transition: width 2s ease-in-out;
}

.experience-container {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.experience {
  background: #333;
  padding: 20px;
  margin: 10px 0;
  border-radius: 8px;
  width: 80%;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
  transition: transform 0.3s;
}

.experience:hover {
  transform: scale(1.05);
  cursor: pointer;
}

.experience h3 {
  margin: 0;
}

.experience p {
  margin: 5px 0;
}

.experience[data-link] {
  cursor: pointer;
}

.tabs {
  display: flex;
  justify-content: center;
  margin-bottom: 20px;
}

.tab-button {
  background: #444;
  border: 1px solid #555;
  padding: 10px 20px;
  cursor: pointer;
  transition: background 0.3s, border-color 0.3s;
  color: #fff;
  border-radius: 5px;
  margin: 0 5px;
}

.tab-button:hover, .tab-button.active {
  background: #555;
  border-color: #666;
  transform: scale(1.05);
}

.projects-carousel {
  display: flex;
  overflow: hidden;
  width: 100%;
  position: relative;
}

.project {
  min-width: 200px;
  margin-right: 20px;
  animation: carousel 20s linear infinite;
  position: relative;
  transform: translateX(100%);
}

.project:hover {
  transform: scale(1.1);
  cursor: pointer;
}

.project-inner {
  position: relative;
  overflow: hidden;
  border-radius: 10px;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
  transition: box-shadow 0.3s;
}

.project-front {
  background: #fff;
  color: #000;
  padding: 20px;
  text-align: center;
  transition: transform 0.5s ease;
}

.project-back {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: #444;
  color: #fff;
  padding: 20px;
  text-align: center;
  transform: translateY(100%);
  transition: transform 0.7s ease;
}

.project:hover .project-front {
  transform: scale(1.1);
}

.project-detail {
  text-decoration: none;
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 80%;
  padding: 20px;
  background: #fff;
  color: #000;
  border-radius: 8px;
  box-shadow: 0 8px 12px rgba(0, 0, 0, 0.3);
  z-index: 1000;
}
.project-detail h3{
  text-align: center;
  font-size: larger;
}
.project-detail a{
  color: black;
  margin-left: 200px;
  text-decoration: none;
}

.project-detail .back-arrow {
  cursor: pointer;
  font-size: 1.5em;
  position: absolute;
  top: 10px;
  right: 10px;
}
.project-detail .back-arrow:hover{
  transform: scale(1.1);
}

.project-detail.hidden {
  display: none;
}

.hidden {
  display: none;
}

.certifications {
  padding: 60px 20px;
  text-align: center;
}

.certifications h2 {
  font-size: 2.5em;
  margin-bottom: 20px;
}

.certification {
  margin: 15px 0;
}

.certification img {
  width: 80%;
  margin: 0 auto;
  display: block;
  transition: transform 0.3s;
}

.certification img:hover {
  transform: scale(1.05);
  cursor: pointer;
}

.resume-container {
  animation: fadeInUp 1s ease-in-out;
}

.contact-container {
  animation: fadeInUp 1s ease-in-out;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
}

.contact-card {
  background: #333;
  padding: 20px;
  margin: 10px;
  border-radius: 8px;
  width: 250px;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
  transition: transform 0.3s;
  text-align: center;
}
.contact-card a{
  text-decoration: none;
  color: white;
  font-size: large;
}
.contact-card:hover {
  transform: scale(1.05);
}

.download-btn {
  background: #444;
  color: #fff;
  padding: 10px 20px;
  text-decoration: none;
  border-radius: 5px;
  transition: background 0.3s, transform 0.3s;
}

.download-btn:hover {
  background: #555;
  transform: scale(1.05);
}

footer {
  background: #333;
  color: #fff;
  text-align: center;
  padding: 10px 0;
}

.slide-up {
  opacity: 0;
  transform: translateY(100px);
  transition: all 0.6s ease-in-out;
}

.slide-up.active {
  opacity: 1;
  transform: translateY(0);
}

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

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

@keyframes carousel {
  0% {
    transform: translateX(100%);
  }
  100% {
    transform: translateX(-100%);
  }
}

@media (max-width: 768px) {
  header nav ul {
    flex-direction: column;
    background: white;
    position: absolute;
    top: 60px;
    width: 100%;
    display: none;
  }

  header nav ul.show {
    display: flex;
    animation: slideDown 0.3s forwards;
  }

  header nav ul li {
    margin: 10px 0;
  }

  header .menu-toggle {
    display: block;
    cursor: pointer;
  }

  .hero {
    height: 300px;
    padding-top: 80px;
  }

  .hero-video {
    display: block;
    height: auto;
  }

  .hero-content {
    padding-right: 60px;
  }

  .hero-content:hover {
    transform: scale(1.05);
  }

  .hero h1 {
    font-size: 2em;
  }

  .hero p {
    font-size: 1em;
  }

  .tabs {
    flex-direction: column;
  }

  .tab-button {
    margin: 5px 0;
  }

  .projects-grid {
    grid-template-columns: 1fr;
  }

  .experience {
    width: 90%;
  }

  @keyframes slideDown {
    from {
      transform: translateY(-100%);
    }
    to {
      transform: translateY(0);
    }
  }
}