.custom-container {
    max-width: 1100px;
    margin: 0 auto;
    padding-left: 15px;
    padding-right: 15px;
}

.question-box {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 44px;
  height: 44px;
  border-radius: 8px;
  border: 2px solid #e0e0e0;
  background-color: #f7f7f7;
  color: #333;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.3s ease;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.question-box:hover {
  border-color: #c0c0c0;
  background-color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.question-box:focus,
.question-box:active {
  outline: none !important;
  box-shadow: none !important;
}

.question-box.current-question {
  border: 2px solid #0d6efd;
  background-color: #e6f2ff;
  color: #0d6efd;
  box-shadow: 0 0 0 3px rgba(13, 110, 253, 0.25);
  transform: scale(1.05);
}

.question-box.correct {
  background-color: #d4edda;
  color: #155724;
  border-color: #c3e6cb;
}

.question-box.incorrect {
  background-color: #f8d7da;
  color: #721c24;
  border-color: #f5c6cb;
}

.question-title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
}
.question-title i {
    margin-right: 8px;
    color: #6c757d;
}
.answer-option {
    border: 1px solid #dee2e6;
    border-radius: 8px;
    padding: 12px 16px;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    cursor: pointer;
    transition: background-color 0.2s, border-color 0.2s;
    min-height: 60px;
}
.answer-option:hover {
    background-color: #f8f9fa;
}
.answer-option.correct {
    background-color: #d4edda;
    border-color: #c3e6cb;
}
.answer-option.incorrect {
    background-color: #f8d7da;
    border-color: #f5c6cb;
}
.answer-label {
    display: flex;
    align-items: center;
    font-size: 16px;
    font-weight: 500;
    flex: 1;
}
.answer-letter {
    font-weight: 600;
    margin-right: 12px;
}
.answer-label-text {
    padding-top: 0;
}
.answer-label-text p {
    margin-bottom: 0;
}

.test-block .explanation {
    background-color: #e9f5ff;
    border: 1px solid #1E3A8A;
    border-radius: 8px;
    padding: 15px;
    margin-top: 15px;
    color: #1E3A8A;
}
.test-block .explanation p {
    color: #1E40AF;
}
.test-block .explanation strong {
    color: #1E3A8A;
}
#submit-test-btn {
  background-color: #2563eb !important;
  color: white !important;
}
#submit-test-btn:hover {
  background-color: #7c5ce3 !important;
  color: white !important;
}

@media (max-width: 576px) {
    .header-info {
        gap: 0.75rem !important;
    }

    .header-info span,
    .header-info .timer {
        font-size: 0.9rem !important;
    }

    .header-info .btn {
        padding: .25rem .5rem !important;
        font-size: .85rem;
    }
}

@media (max-width: 576px) {
    .info-div-block {
        padding-top: 0 !important;
        margin-top: 0 !important;
    }
}