style.css

@import url('./node_modules/bootstrap/dist/css/bootstrap.css');

:root {
  --svg-default-size: 12px;
}

#new-student-start-studies-year,
#filter-start-study-year-control-id {
  -moz-appearance: textfield;
}

#new-student-start-studies-year::-webkit-inner-spin-button,
#new-student-start-studies-year::-webkit-outer-spin-button,
#filter-start-study-year-control-id::-webkit-inner-spin-button,
#filter-start-study-year-control-id::-webkit-outer-spin-button,
#filter-finish-study-year-control-id::-webkit-inner-spin-button,
#filter-finish-study-year-control-id::-webkit-outer-spin-button {
  display: none;
  margin: 0;
  -webkit-appearance: none;
}

form p:not(:last-child) {
  margin-bottom: 2px;
}

form p:last-child {
  margin-bottom: 0;
}

.form-control.is-invalid {
  padding-right: calc(1.5em + 0.75rem);
  border-color: var(--bs-form-invalid-border-color);
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12' width='12' height='12' fill='none' stroke='%23dc3545'%3e%3ccircle cx='6' cy='6' r='4.5'/%3e%3cpath stroke-linejoin='round' d='M5.8 3.6h.4L6 6.5z'/%3e%3ccircle cx='6' cy='8.2' r='.6' fill='%23dc3545' stroke='none'/%3e%3c/svg%3e");
  background-position: right calc(0.375em + 0.1875rem) center;
  background-repeat: no-repeat;
  background-size: calc(0.75em + 0.375rem) calc(0.75em + 0.375rem);
}

.form-control.is-valid {
  padding-right: calc(1.5em + 0.75rem);
  border-color: var(--bs-form-valid-border-color);
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 8 8'%3e%3cpath fill='%23198754' d='M2.3 6.73.6 4.53c-.4-1.04.46-1.4 1.1-.8l1.1 1.4 3.4-3.8c.6-.63 1.6-.27 1.2.7l-4 4.6c-.43.5-.8.4-1.1.1z'/%3e%3c/svg%3e");
  background-position: right calc(0.375em + 0.1875rem) center;
  background-repeat: no-repeat;
  background-size: calc(0.75em + 0.375rem) calc(0.75em + 0.375rem);
}

.form-control.filtered,
.form-select.filtered {
  border-color: #f0f;
}

.table-column-name {
  position: relative;
  display: inline-flex;
  align-items: center;
  column-gap: 16px;
}

.table-column-name::after,
.table-column-name::before {
  display: block;
  width: var(--svg-default-size);
  height: var(--svg-default-size);
  background: url("./assets/icons/arrow.svg") no-repeat center;
  background-size: contain;
  content: '';
}

.table-column-name::before {
  position: absolute;
  top: 50%;
  right: calc(var(--svg-default-size) / 1.4);
  transform: translateY(-50%) rotateX(180deg);
}

.table-column-name_list-to-most::after,
.table-column-name_most-to-list::before {
  background-image: url("./assets/icons/arrow-active.svg");
}

th {
  cursor: pointer;
}

@media (hover: hover) {
  th:hover .table-column-name {
    color: #0d6efd;
  }

  th:hover .table-column-name::after,
  th:hover .table-column-name::before {
    background-image: url("./assets/icons/arrow-hover.svg");
  }

  th:hover .table-column-name_list-to-most::after,
  th:hover .table-column-name_most-to-list::before {
    background-image: url("./assets/icons/arrow-active.svg");
  }

  #filters-clear-button-id {
    transition: transform ease-in-out .1s;
  }

  .visually-hidden {
    position: fixed;
    z-index: -10001;
    transform: scale(0);
  }
}