body {
  background-color: #000;
  color: #fff;
  font-family: Arial, sans-serif;
  margin: 0;
  padding-top: 60px; 
}

.header {
  background-color: #121212;
  padding: 6px 0;
  text-align: center;
  position: fixed;
  width: 100%;
  top: 0;
  z-index: 1000;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.company-logo {
  height: 50px;
  transition: transform 0.5s ease-in-out; 
}

.company-logo:hover {
    transform: perspective(900px) translateY(-5%) rotateX(25deg) translateZ(0) translate3d(0%, 0%,-8px);
}

.ag-format-container {
  width: 1142px;
  margin: 0 auto;
}

.ag-courses_box {
  display: flex;
  align-items: flex-start;
  flex-wrap: wrap;
  padding: 50px 0;
}

.ag-courses_item {
  flex-basis: calc(33.33333% - 30px);
  margin: 0 15px 30px;
  overflow: hidden;
  border-radius: 28px;
}

.ag-courses-item_link {
  display: block;
  padding: 30px 20px;
  background-color: #121212;
  position: relative;
}

.ag-courses-item_link:hover,
.ag-courses-item_link:hover .ag-courses-item_date {
  text-decoration: none;
  color: #FFF;
}

.ag-courses-item_link:hover .ag-courses-item_bg {
  transform: scale(10);
}

.ag-courses-item_title {
  margin: 0 0 17px;
  font-weight: bold;
  font-size: 30px;
  color: #FFF;
  z-index: 2;
  position: relative;
}

.ag-courses-item_date-box {
  font-size: 18px;
  color: #FFF;
  z-index: 2;
  position: relative;
  margin-bottom: 8px;
}

.ag-courses-item_date {
  font-weight: bold;
  color: #f9b234;
  transition: color .5s ease;
}

.ag-courses-item_bg {
  height: 128px;
  width: 128px;
  background-color: #f9b234;
  z-index: 1;
  position: absolute;
  top: -75px;
  right: -75px;
  border-radius: 50%;
  transition: all .5s ease;
}

.ag-courses_item:nth-child(2n) .ag-courses-item_bg {
  background-color: #3ecd5e;
}

.ag-courses_item:nth-child(3n) .ag-courses-item_bg {
  background-color: #e44002;
}

.ag-courses_item:nth-child(4n) .ag-courses-item_bg {
  background-color: #952aff;
}

.ag-courses_item:nth-child(5n) .ag-courses-item_bg {
  background-color: #cd3e94;
}

.ag-courses_item:nth-child(6n) .ag-courses-item_bg {
  background-color: #4c49ea;
}

@media only screen and (max-width: 979px) {
  .ag-courses_item {
    flex-basis: calc(50% - 30px);
  }
  .ag-courses-item_title {
    font-size: 24px;
  }
}

@media only screen and (max-width: 767px) {
  .ag-format-container {
    width: 96%;
  }
}

@media only screen and (max-width: 639px) {
  .ag-courses_item {
    flex-basis: 100%;
  }
  .ag-courses-item_title {
    min-height: 72px;
    line-height: 1;
    font-size: 24px;
  }
  .ag-courses-item_link {
    padding: 22px 40px;
  }
  .ag-courses-item_date-box {
    font-size: 16px;
  }
}