@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700;800;900&display=swap');

*{
    margin:0;
    padding:0;
    box-sizing: border-box;
    font-family:'Poppins',sans-serif;
}
html {
  scroll-behavior: smooth;
}

a {
    color:#fff;
    text-decoration-line: none;
}
@media (max-width: 768px) {
    .highlight-item img {
        width: 200px;
        height: 140px;
    }
}
.navbar {
    position:fixed;
    left:0;
    top:0;
    width:100%;
    padding:25px 9%;
    display:flex;
    justify-content: space-between;
    align-items: center;
    z-index: 100;
    visibility: hidden;
    opacity: 0;
    animation: show-content 1.5s linear forwards;
    animation-delay: 1.2s;
}
@keyframes show-content {
    100% {
        visibility: visible;
        opacity: 1;
    }
}
.navbar .logo {
    font-size: 30px;
    font-weight: 700;
}
.navbar ul {
    display: flex;
}
.navbar ul li {
    list-style:none;
    margin-left: 30px;
}
.navbar ul li a {
    font-size: 20px;
    font-weight: 500;
    transition: .5s;
}
.navbar ul li:hover  a {
    color:#7cf03d;
}
.home {
    display: flex;
    align-items: center;
    gap:50px;
    height: 100vh;
    padding: 60px 9% 0;
    color: #fff;
    visibility: hidden;
    opacity: 0;
    animation: show-content 1.5s linear forwards;
    animation-delay: 1.6s;
}
.home-info h1 {
    font-size: 55px;
}
.home-info h2 {
    display: inline-block;
    font-size: 32px;
    margin-top: -10px;
    
}
.home-info h2 span {
    position: relative;
    display: inline-block;
    color: transparent;
    -webkit-text-stroke: .7px #7cf03d;
    animation: display-text 12s linear infinite;
    animation-delay: calc(-4s *var(--i));
}
@keyframes display-text {
    25%,100% {
        display: none;
    }
}
.home-info h2 span::before {
    content: attr(data-text);
    position: absolute;
    width: 0;
    border-right: 2px solid #7cf03d;
    color:#7cf03d;
    white-space: nowrap;
    overflow: hidden;
    animation: fill-text 4s linear infinite;
}
@keyframes fill-text {
    10%,
    100% {
        width:0;
    }
    70%,
    90% {
        width: 100%;
    }
}
.home-info p {
    font-size: 16px;
    margin: 10px 0 25px;
}
.home-info .btn-sci {
    display: flex;
    align-items: center;

}
.btn {
    display: inline-block;
    padding: 10px 30px;
    background:#7cf03d ;
    border:2px solid #7cf03d;
    border-radius: 40px;
    box-shadow:0  0 10px #7cf03d;
    font-size: 16px;
    color: #1f242d;
    font-weight: 600;
}
.btn:hover {
    background: transparent;
    color: #7cf03d;
    box-shadow: none;
}
.home-info .btn-sci .sci {
    margin-left: 20px;
}
.home-info .btn-sci .sci a {
    display: inline-flex;
    padding: 8px;
    border:2px solid #7cf03d;
    border-radius: 50%;
    font-size:20px;
    color:#7cf03d;
    margin: 0 8px;
    transition: .5s;
}
.home-info .btn-sci .sci a:hover {
    background: #7cf03d;
    color: #1f242d;
    box-shadow: 0 0 10px #7cf03d;
}
.home-img .img-box {
    position: relative;
    width: 32vw;
    height: 32vw;       /* giữ màu debug nếu cần */
    border-radius: 50%;
    overflow: hidden;
    padding: 0;             /* bỏ padding để ảnh luôn đầy khung */
    display: flex;
    justify-content: center;
    align-items: center;
    padding:5px;
    justify-content: center;
    align-items: center;
    overflow: hidden;
}
.home-img .img-box::before, 
.home-img .img-box::after {
    content: '';
    position: absolute;
    width: 500px;
    height: 500px;
    background: conic-gradient(transparent,transparent,transparent,#7cf03d);
    transform: rotate(0deg);
    animation: rotate-border 1s linear infinite;
}
@keyframes rotate-border {
    100% {
        transform: rotate(360deg);
    }
}
.home-img .img-box .img-item {
    position: relative;
    width: 100%;
    height: 100%;
    background:#1f242d;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1;
    overflow: hidden;
}

.home-img .img-box .img-item img {
    position: relative;
    top: 0;
    left: 0;
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    mix-blend-mode: lighten;
}
.bars-animation {
    position: absolute;
    width: 100%;
    height: 100%;
    display: flex;
    z-index: -1;
}
.bars-animation .bar {
    width: 100%;
    height:100%;
    background: #1f242d;
    transform: translateY(-100%);
    animation: show-bars .5s ease-in-out forwards;
    animation-delay: calc(.1s *var(--i));
}
@keyframes show-bars {
    100% {
        transform: translateY(0%);
    }
}


/* về tôi */
.about {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 80px 5%;
    background-color: #1f242d;
}

.about-container {
    display: flex;
    gap: 50px;
    max-width: 1200px;
    align-items: center;
    flex-wrap: wrap;
}

.about-img img {
    width: 300px;
    border-radius: 20px;
    box-shadow: 0 0 15px #fff;
}

.about-content {
    flex: 1;
    min-width: 300px;
}

.about-content h2 {
    font-size: 32px;
    margin-bottom: 20px;
    color: #fff;
}

.about-content p {
    font-size: 16px;
    margin-bottom: 15px;
    line-height: 1.6;
    color: #fff;
}

.about-content .btn {
    display: inline-block;
    padding: 10px 20px;
    background-color: #333;
    color: white;
    border-radius: 5px;
    text-decoration: none;
    transition: background-color 0.3s ease;
}

.about-content .btn:hover {
    background-color: #555;
}
.scroll-down {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 40px;
    color: #7cf03d;
    animation: bounce 2s infinite;
    z-index: 10;
    cursor: pointer;
}

@keyframes bounce {
    0%, 100% {
        transform: translate(-50%, 0);
    }
    50% {
        transform: translate(-50%, 10px);
    }
}



/* từng tham gia */
.participation {
  padding: 80px 20px;
  background-color: #1f242d;
  text-align: center;
}

.section-title {
  font-size: 2em;
  margin-bottom: 40px;
  color: #fff;
}

.participation-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.participation-item {
  opacity: 0;
  width: calc(90% - 20px);
  transform: translateY(50px);
  transition: all 0.8s ease;
}

.participation-item img {
    width: 80%;
    height: auto;
    border-radius: 12px;
    transition: 0.4s ease;
    box-shadow: 0 0 15px rgba(255, 255, 255, 0.6); /* luôn sáng */
}
.participation-item p {
  margin-top: 12px;
  font-size: 1rem;
  color: #fff;
  opacity: 0;
  transition: opacity 0.6s ease 0.3s;
}

/* Hiện khi lướt tới */
.participation-item.show {
  opacity: 1;
  transform: translateY(0);
}

.participation-item.show p {
  opacity: 1;
}

/* Thành tích-kỹ năng */
.profile-card {
  display: flex;
  flex-wrap: wrap;
  background: #1f242d;
  padding: 30px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.profile-left {
  flex: 1;
  text-align: center;
  min-width: 250px;
  color:#fff;
}

.profile-left img {
  width: 200px;
  border-radius: 12px;
  box-shadow: 0 0 15px #fff;
  transition: 0.3s ease;
}

.profile-left img:hover {
  transform: scale(1.05);
}

.profile-right {
  flex: 2;
  padding-left: 30px;
}

.profile-right h3 {
  color: #fff;
  margin-top: 0;
}

.profile-right ul {
  list-style: none;
  padding: 0;
  color:#fff;
}

.profile-right ul li::before {
  content: "✓";
  color: #d35400;
  margin-right: 8px;
}
.profile-title {
  text-align: center;
  width: 100%;
  margin: 20px 0;
}

.profile-title h2 {
  font-size: 28px;
  color: #fff;
  font-weight: bold;
}

/*hình ảnh */
.highlight-gallery {
    padding: 2rem 0;
    background-color: #1f242d;
}

.highlight-title {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 1.5rem;
    font-weight: bold;
}

.highlight-slider-container {
    overflow: hidden;
    position: relative;
    width: 100%;
}

.highlight-slider-track {
    display: flex;
    animation: scrollHighlightSlider 15s linear infinite;
    gap: 20px;
}

.highlight-item img {
    width: 300px;              /* Hoặc auto nếu muốn ảnh tự co chiều rộng */
    height: 200px;             /* Chiều cao cố định ngang */
    object-fit: cover;         /* Cắt ảnh để vừa khung mà không méo */
    border-radius: 12px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
}


/* Animation */
@keyframes scrollHighlightSlider {
    0% {
        transform: translateX(0);
    }
    100% {
        transform: translateX(-100%);
    }
}



/*PHONE*/
@media (max-width: 768px) {
  .home {
    flex-direction: column;
    padding: 100px 20px 40px;
    text-align: center;
    gap: 30px;
  }

  .home-info h1 {
    font-size: 35px;
  }

  .home-info h2 {
    font-size: 24px;
  }

  .home-info p {
    font-size: 15px;
    text-align: justify;
    padding: 0 5px;
  }

  .home-img .img-box {
    width: 200px;
    height: 200px;
    margin: auto;
  }

  .btn-sci {
    flex-direction: column;
    gap: 10px;
    margin-top: 20px;
  }

  .btn {
    font-size: 14px;
    padding: 8px 20px;
  }

  .sci {
    justify-content: center;
  }

  .sci a {
    margin: 0 5px;
  }

  .about-container {
    flex-direction: column;
    align-items: center;
    gap: 20px;
  }

  .about-img img {
    width: 80%;
    max-width: 250px;
  }

  .about-content {
    padding: 0 10px;
  }

  .about-content h2 {
    font-size: 24px;
    text-align: center;
  }

  .about-content p {
    font-size: 14px;
    text-align: justify;
  }

  .profile-card {
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 20px;
  }

  .profile-left img {
    width: 150px;
  }

  .highlight-item img {
    width: 220px;
    height: 150px;
  }

  .scroll-down {
    bottom: 20px;
    font-size: 30px;
  }

  .navbar {
    padding: 15px 20px;
  }

  .navbar ul li a {
    font-size: 16px;
  }
}