body {
    font-family: 'Segoe UI', sans-serif;
}
#introduction-start {
    display: flex;
    background: #060923;
    padding: 7%;
}

.slogan h1{
    font-size: 2.1rem;
}


.slogan h4 {
    font-weight: 450;
    font-size: 1.25rem;
}



@keyframes zoomIn {
  0% {
    transform: scale(0.8);
    opacity: 0;
  }
  100% {
    transform: scale(1);
    opacity: 1;
  }
}


.start-now {
    display: inline-block;
    padding: 10px;
    text-decoration: none;
    font-size: 1.2rem;
    color: #fff;
    border: 2.5px solid #fff;
    border-radius: 999px;
    background: linear-gradient(
    90deg,
    #ffb3ba,
    #ffdfba,
    #ffffba,
    #baffc9,
    #bae1ff,
    #bdb2ff,
    #ffb3ff,
    #b3ffff,
    #ffd6ff
    );
    background-size: 300% 300%; /* Tạo hiệu ứng gradient mượt hơn */
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    font-weight: bold;
    animation: rainbow-move 5s ease infinite;
    outline: none;
    -webkit-tap-highlight-color: transparent;
}

@keyframes rainbow-move {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}


.start-now:hover {
    animation: moveUpstartnow 0.7s ease forwards;
    outline: none;
    -webkit-tap-highlight-color: transparent;
}

@keyframes moveUpstartnow {
   0% {
        transform: translateY(0);
    }
    100% {
        transform: translateY(-7px);
    }
}

.slogan {
    width: 50%;
    margin-top: 20px;
    color: #fff;
    max-width: none;
}

/* .welcome__text-icon-tl {

} */


.welcome__text-icon-tr {
    animation: moveUpDownsvg 6s ease-in-out infinite;
    margin-left: 510px;
    
}

.welcome__text-icon-tl {
    animation: moveUpDownsvg 6s ease-in-out infinite;
}

.welcome__text-icon-b {
    animation: moveUpDownsvg 6s ease-in-out infinite;
    margin-left: 150px;
}

@keyframes moveUpDownsvg {
    0% {
      transform: translateY(0);
    }
    50% {
      transform: translateY(-45px);
    }
    100% {
      transform: translateY(0);
    }
}

.image {
    width: 50%;
    display: block;
    text-align: right;
    animation: moveUpDown 4s ease-in-out infinite;
    
}

@keyframes moveUpDown {
    0% {
      transform: translateY(0);
    }
    50% {
      transform: translateY(-50px);
    }
    100% {
      transform: translateY(0);
    }
}

.image img {
    width: 400px;
    height: 350px;
    z-index: 9999;
}


#advertisement {
    display: flex;
    align-items: flex-end;
    background: #060923;
    padding: 7%;
    color: #fff;
}


.image-adv {
    width: 50%;
    display: block;
    text-align: left;
    animation: zoomInOut 4s ease-in-out infinite;
}

@keyframes zoomInOut {
  0% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.1); /* phóng to 10% */
  }
  100% {
    transform: scale(1);
  }
}

.image-adv img {
    width: 400px;
    height: 350px;
    outline: none;
    border: none;
    z-index: 9999;
    
}


.text-adv {
    width: 50%;
    margin-top: 20px;
}

.image-adv h1 {
    font-size: 2.1rem;
    background: linear-gradient(
    90deg,
    #ff8080,  /* đỏ sáng */
    #ffb366,  /* cam sáng */
    #ffff99,  /* vàng nhạt */
    #99ff99,  /* xanh lá nhạt */
    #99ffff,  /* xanh ngọc sáng */
    #99ccff,  /* xanh dương sáng */
    #d1b3ff,  /* tím nhạt */
    #ff99cc,  /* hồng sáng */
    #b3fff0   /* xanh ngọc pastel sáng */
    );
    background-size: 300% 300%; /* Tạo hiệu ứng gradient mượt hơn */
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    font-weight: bold;
    animation: rainbow-move 5s ease infinite;
}

@keyframes rainbow-move {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

.text-adv p {
    font-weight: 450;
    font-size: 1.25rem;
}


#reason6 {
    background: #060923;
    padding: 7%;
    
}

#reason6 h1 {
    color: white;
    text-align: center;
    padding-bottom: 30px;
}

.reason__total {
    display: flex;
    justify-content: space-evenly;
    flex-wrap: wrap;
    row-gap: 20px;
}


.reason {
    width: 30%;
    padding: 16px;
    color: #fff;
    background-color: #1D2939;
    box-sizing: border-box;
    border-radius: 5px;
    box-shadow: 0 6px 10px rgba(0, 0, 0, 0.3);
    cursor: pointer;

}
.reason:hover {
    animation: moveUp 0.3s ease forwards;
    outline: none;
    -webkit-tap-highlight-color: transparent;
}

@keyframes moveUp {
   0% {
        transform: scale(1);
    }
    100% {
        transform: scale(1.0245);
    }
}


.reason_title {
    font-weight: bold;
}

.reason_text {
    font-size: 0.8rem;
}

/* Tablet*/
@media only screen and (max-width: 63.9375em) {
    #introduction-start {
        flex-direction: column-reverse;
    }

    .slogan {
        width: 100%;
        text-align: center;
    }

    .slogan h1 {
        font-size: 1.7rem;
    }

    .slogan h4 {
        font-size: 1rem;
    }
    .image {
        width: 100%;
        text-align: center;
        
    }


    .image img {
        width: 250px;
        height: 250px;  
    }

    .welcome__text-icon-b {
        display: none;

    }

    .welcome__text-icon-tl {
        display: none;
    }

    .welcome__text-icon-tr {
        display: none;
    }

    /* -----------------------------------------------------------*/

    .image-adv h1 {
        font-size: 1.7rem;
    }

    .text-adv p {
        font-size: 1rem;
    }
    #advertisement {
        flex-direction: column;
    }

    .image-adv {
        width: 100%;
        text-align: center;
    }

    .image-adv img {
        width: 250px;
        height: 250px;  
    }

    .text-adv {
        width: 100%;
        text-align: center;
    }
    /* -----------------------------------------------------------*/

    #reason6 h1 {
        font-size: 1.5rem;
    }
    
    .reason {
        width: 100%;
        
    }



    .reason__total {
        flex-direction: column;
    }
}
/* ------------------------------------------------------------ */