:root {
  --main-purple: #7e56d9;
  --main-purple-light: #a78bfa;
  --main-purple-dark: #461d8d;

  --icon-red: #ff4d4d;
  --icon-green: #4caf50;
  --icon-blue: #2196f3;
  --icon-yellow: #ffeb3b;
  --icon-orange: #ff9800;
  --icon-purple: #7e56d9;
}

.bg-default {
  background-color: var(--main-purple-dark) !important;
}

.fill-default-langoola {
  fill: var(--main-purple-dark) !important;
}

.text-purple {
  color: var(--main-purple);
}

.vocabTraining {
  .card {
    transition: transform 0.3s ease, opacity 0.3s ease;
  }
  .card-title {
    font-size: 1.5rem;
    font-weight: bold;
  }

  .btn-danger {
    border-radius: 50%;
    width: 100px;
    height: 100px;
    display: flex;
    justify-content: center;
    align-items: center;
  }

  .btn-success {
    border-radius: 50%;
    width: 100px;
    height: 100px;
    display: flex;
    justify-content: center;
    align-items: center;
  }

  .btn-danger:hover,
  .btn-success:hover {
    transform: scale(1.2);
  }

  .btn-outline-info {
    color: var(--main-purple);
    border-color: var(--main-purple);
  }

  .btn-outline-info:hover {
    background-color: var(--main-purple);
    color: white;
  }

  .badge-info {
    background-color: var(--main-purple);
    color: white;
  }
}

.vocab-subheadline {
  font-size: 1.25rem;
  font-weight: 500;
  color: var(--main-purple);
}

.bg-gradient-primary-langoola {
  background: linear-gradient(
    87deg,
    var(--main-purple) 0,
    var(--main-purple-dark) 100%
  );
}

.bg-gradient-default-langoola {
  background: linear-gradient(
    87deg,
    var(--main-purple) 0,
    var(--main-purple-dark) 100%
  );
}

.navbar-vertical .navbar-nav .nav-link {
  font-size: 1rem; /* e.g., from a smaller default */
  padding-top: 1.2rem;
  padding-bottom: 1.2rem;
}

.navbar-vertical .navbar-nav .nav-link i {
  font-size: 1.1rem; /* e.g., from a smaller default */
  min-width: 2.5rem; /* Adjust to keep text aligned */
}

.table td,
.table th {
  white-space: normal !important;
  word-break: break-word;
  vertical-align: middle;
}

.modern-vocab-card {
  border-radius: 2rem !important;
  box-shadow: 0 8px 32px 0 var(--main-purple);
  transition: box-shadow 0.3s, transform 0.3s;
}
.modern-vocab-card:hover {
  box-shadow: 0 16px 48px 0 rgba(60, 60, 120, 0.25);
}
.vocab-btn {
  width: 70px;
  height: 70px;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 2rem;
  transition: background 0.2s, transform 0.2s;
}
.vocab-btn:hover {
  transform: scale(1.15);
}

.summary-2lines {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  text-overflow: ellipsis;
}

.btn-outline-primary:not(:disabled):not(.disabled).active,
.btn-outline-primary:not(:disabled):not(.disabled):active,
.show > .btn-outline-primary.dropdown-toggle {
  background-color: var(--main-purple);
  border-color: var(--main-purple);
}

.btn-outline-primary {
  border-color: var(--main-purple);
}

.btn-outline-primary:hover {
  background-color: var(--main-purple);
  border-color: var(--main-purple);
}

.btn-primary {
  background-color: var(--main-purple);
  border-color: var(--main-purple);
}

.btn-primary:hover {
  background-color: var(--main-purple-dark);
  border-color: var(--main-purple-dark);
}

chat-messages {
  height: 400px;
  overflow-y: scroll;
  padding: 10px;
}

.msg_cotainer {
  background-color: var(--main-purple);
  color: white;
  border-radius: 25px;
  padding: 10px;
  margin-bottom: 5px;
  display: inline-block;
  position: relative;
}

.msg_cotainer_send {
  background-color: #e2e6ea;
  color: black;
  border-radius: 25px;
  padding: 10px;
  margin-bottom: 5px;
  display: inline-block;
  position: relative;
}

.msg_time {
  position: absolute;
  left: 0;
  bottom: -15px;
  color: #6c757d;
  font-size: 10px;
}

.msg_time_send {
  position: absolute;
  right: 0;
  bottom: -15px;
  color: #6c757d;
  font-size: 10px;
}

.dot {
  display: inline-block;
  opacity: 0.2;
  transition: opacity 0.3s ease-in-out;
}

.topic-button {
    display: flex;
    align-items: center;
    justify-content: left;
    padding: 10px 15px;
    border-radius: 5px;
    font-size: 1rem;
    transition: background-color 0.3s ease;
    border-color: var(--icon-purple);
    border-width: 1px;
    border-style: solid;
    min-height: 4.5rem;
  }

  .topic-button:hover {
  transform: scale(1.05); /* Slightly scale up on hover */
  box-shadow: 0 0 10px var(--main-purple); /* Add a subtle glow */
}

  .topic-icon {
    width: 30px;
    height: 30px;
    margin-right: 12px;
  }

  .tts-highlight {
  text-decoration: underline !important;
  text-decoration-thickness: 2px !important;
  text-underline-offset: 2px !important;
  text-decoration-color: var(--main-purple) !important;
  transition: text-decoration-color 300ms ease !important;
  background: none !important;
  color: inherit !important;
}

.tts-highlight-fade {
  text-decoration: underline !important;
  text-decoration-thickness: 2px !important;
  text-underline-offset: 2px !important;
  text-decoration-color: rgba(126, 86, 217, 0) !important; /* main purple with 0 alpha */
  transition: text-decoration-color 300ms ease !important;
  background: none !important;
  color: inherit !important;
}

.nav-pills .nav-link {
  color: var(--main-purple);
}

.nav-pills .nav-link:hover {
  background-color: var(--main-purple-light);
  color: white;
}

.nav-pills .nav-link.active, .nav-pills .show>.nav-link {
  background-color: var(--main-purple);
}

@media (max-width: 767.98px) {
  .new-vocab-btn {
    font-size: 0.9rem;
    padding-left: 0.5rem;
    padding-right: 0.5rem;
    white-space: normal;
  }

  .vocab-btn {
    width: 50px;
    height: 50px;
    font-size: 1.3rem;
  }

  .difficulty-filter-group .btn {
    min-width: 0;
    font-size: 0.95rem;
    padding-left: 0.3rem;
    padding-right: 0.3rem;
    flex: 1 1 0;
    white-space: nowrap;
  }

  
}

/*
* Spinner styles (missing from Argon theme)
*/
.spinner-border {
  display: inline-block;
  width: 2rem;
  height: 2rem;
  vertical-align: -0.125em;
  border: 0.25em solid currentColor;
  border-right-color: transparent;
  border-radius: 50%;
  -webkit-animation: spinner-border .75s linear infinite;
  animation: spinner-border .75s linear infinite;
}

.spinner-border-sm {
  width: 1rem;
  height: 1rem;
  border-width: 0.2em;
}

@-webkit-keyframes spinner-border {
  to { transform: rotate(360deg); }
}

@keyframes spinner-border {
  to { transform: rotate(360deg); }
}