:root {
  --qt-primary: #f0282d;
  --qt-primary-soft: rgba(240, 40, 45, 0.1);
  --qt-secondary: #0f172a;
  --qt-accent: #3b82f6;
  --qt-focus: #1d4ed8;
  --qt-bg: #f1f5f9;
  --qt-card-bg: rgba(255, 255, 255, 0.9);
  --qt-text-main: #1e293b;
  --qt-text-muted: #64748b;
  --qt-heading: #0b1b33;
  --qt-border: #e2e8f0;
  --qt-border-strong: #cbd5e1;
  --qt-radius-sm: 8px;
  --qt-radius-md: 16px;
  --qt-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.05), 0 4px 6px -2px rgba(0, 0, 0, 0.02);
  --qt-shadow-hover: 0 20px 25px -5px rgba(0, 0, 0, 0.08), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

.qt-quiz {
  background:
    radial-gradient(circle at 10% 10%, rgba(59, 130, 246, 0.08), transparent 35%),
    radial-gradient(circle at 90% 85%, rgba(240, 40, 45, 0.08), transparent 30%),
    var(--qt-bg);
  padding: 40px 20px;
  min-height: 400px;
  color: var(--qt-text-main);
  font-family: "Be Vietnam Pro", "Segoe UI", sans-serif;
}

.qt-quiz__panel--list {
  max-width: 1000px;
  margin: 0 auto;
  text-transform: none;
}

.qt-quiz__actions button {
  margin: 0;
}

.qt-quiz__actions {
  margin-top: 20px;
  display: flex;
  justify-content: flex-end;
  gap: 15px;
  flex-wrap: wrap;
}

/* Toolbar & Filter Section */
.qt-quiz__toolbar {
  background: linear-gradient(145deg, #ffffff 0%, #f8fbff 100%);
  padding: 26px 28px;
  border-radius: var(--qt-radius-md);
  box-shadow: var(--qt-shadow);
  margin-bottom: 30px;
  position: relative;
  border: 1px solid var(--qt-border);
}

.qt-quiz__filter-group {
  width: 100%;
  max-width: 620px;
  margin: 0 auto;
}

.qt-quiz__toolbar::before {
  content: "";
  position: absolute;
  left: 28px;
  top: 0;
  width: 66px;
  height: 4px;
  background: linear-gradient(90deg, var(--qt-primary), #fb7185);
  border-radius: 999px;
}

.qt-quiz__filter-group label {
  display: block;
  font-size: 18px;
  font-weight: 700;
  color: var(--qt-heading);
  margin-bottom: 6px;
}

.qt-quiz__filter-note {
  margin: 0 0 14px;
  font-size: 14px;
  color: var(--qt-text-muted);
}

.qt-quiz__select-wrapper {
  position: relative;
}

.qt-quiz__select-wrapper::after {
  content: "\25BE";
  position: absolute;
  right: 18px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 18px;
  font-weight: 700;
  color: #475569;
  pointer-events: none;
}

.qt-quiz__select {
  width: 100% !important;
  height: 60px !important;
  padding: 0 52px 0 18px !important;
  font-size: 16px !important;
  font-weight: 600 !important;
  color: var(--qt-text-main) !important;
  background: #fff !important;
  border: 1.5px solid var(--qt-border-strong) !important;
  border-radius: var(--qt-radius-sm) !important;
  cursor: pointer;
  transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
  appearance: none;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.9), 0 2px 10px rgba(15, 23, 42, 0.04);
}

.qt-quiz__select:hover {
  border-color: #94a3b8 !important;
}

.qt-quiz__select:focus {
  outline: none;
  border-color: var(--qt-focus) !important;
  background: #fff !important;
  transform: translateY(-1px);
  box-shadow: 0 0 0 4px rgba(29, 78, 216, 0.12), 0 8px 20px rgba(29, 78, 216, 0.1);
}

/* Test Grid - Split into 2 Columns as requested */
.qt-quiz__tests-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}


.qt-quiz__test-item {
  background: var(--qt-card-bg);
  backdrop-filter: blur(8px);
  border: 1px solid var(--qt-border);
  padding: 10px 20px;
  border-radius: var(--qt-radius-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  position: relative;
  overflow: hidden;
}

.qt-quiz__test-item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--qt-primary);
  opacity: 0.7;
}

.qt-quiz__test-item:hover {
  transform: translateY(-5px);
  box-shadow: var(--qt-shadow-hover);
  border-color: var(--qt-primary);
}

.qt-quiz__test-info {
  display: flex;
  flex-direction: column;
}

.qt-quiz__test-title {
  font-size: 20px;
  color: var(--qt-secondary);
  letter-spacing: -0.01em;
}

.qt-quiz__test-try {
  background: var(--qt-secondary);
  color: #fff;
  border: none;
  padding: 5px 16px;
  border-radius: 30px;
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
  transition: all 0.3s ease;
  margin: 0;
  text-transform: none;
}

.qt-quiz__test-try:hover {
  background: var(--qt-primary);
  transform: scale(1.05);
  box-shadow: 0 8px 12px rgba(240, 40, 45, 0.2);
}

/* Exam Panel Styling */
.qt-quiz__panel--exam {
  background: #fff;
  padding: 30px;
  border-radius: var(--qt-radius-md);
  box-shadow: var(--qt-shadow);
  max-width: 800px;
  margin: 0 auto;
}

/* Utils */
.qt-quiz__panel {
  display: none !important;
}

.qt-quiz__panel.qt-quiz__panel--active {
  display: block !important;
}

.qt-quiz__learner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.qt-quiz__input {
  height: 52px;
  padding: 0 16px;
  background: #f8fafc;
  border: 1px solid var(--qt-border);
  border-radius: var(--qt-radius-sm);
  font-size: 15px;
  transition: all 0.3s ease;
}

.qt-quiz__input:focus {
  outline: none;
  border-color: var(--qt-accent);
  background: #fff;
}

.qt-quiz__exam-header {
  border-bottom: 2px solid var(--qt-border);
  padding-bottom: 20px;
  margin-bottom: 30px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 15px;
}

.qt-quiz__timer {
  font-size: 24px;
  font-weight: 800;
  color: var(--qt-primary);
  font-family: 'Monaco', 'Consolas', monospace;
  background: var(--qt-primary-soft);
  padding: 4px 12px;
  border-radius: 8px;
}

/* Question Styling */
.qt-quiz__question-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--qt-secondary);
}

.qt-quiz__question-text {
  font-size: 17px;
  line-height: 1.6;
  color: var(--qt-text-main);
}

.qt-quiz__options {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.qt-quiz__option {
  padding: 18px 20px;
  border: 2px solid var(--qt-border);
  border-radius: var(--qt-radius-sm);
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  gap: 15px;
}

.qt-quiz__option:hover:not(.qt-quiz__option--is-correct):not(.qt-quiz__option--is-wrong) {
  border-color: var(--qt-accent);
  background: rgba(59, 130, 246, 0.05);
}

.qt-quiz__option:has(input[type="radio"]:checked) {
  border-color: var(--qt-accent);
  background: rgba(59, 130, 246, 0.08);
}

.qt-quiz__option--is-correct {
  background-color: #dcfce7 !important;
  border-color: #16a34a !important;
  color: #14532d;
}

.qt-quiz__option--is-wrong {
  background-color: #fee2e2 !important;
  border-color: #dc2626 !important;
  color: #7f1d1d;
}

.qt-quiz__option input[type="radio"] {
  display: none;
}

.qt-quiz__image {
  margin: 24px auto;
  text-align: center;
  max-width: 300px;
  max-height: 180px;
}

.qt-quiz__image img {
  max-width: 100%;
  height: auto;
  object-fit: contain;
  height: 180px;
}

.qt-quiz__question-answer-label {
  margin: 24px 0 16px;
  color: var(--qt-primary);
  font-weight: 700;
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  border-bottom: 2px solid var(--qt-primary-soft);
  display: inline-block;
  padding-bottom: 4px;
}

.qt-quiz__btn {
  text-transform: none;
  height: 40px;
  padding: 0 20px;
  border-radius: 30px;
  font-weight: 500;
  border: none;
  cursor: pointer;
  transition: all 0.3s ease;
  margin: 0;
}

.qt-quiz__btn--submit {
  background: var(--qt-primary);
  color: #fff;
}

.qt-quiz__btn--next {
  background: var(--qt-primary);
  color: #fff;
}

.qt-quiz__btn--back {
  background: var(--qt-bg);
  color: var(--qt-text-muted);
}

.qt-quiz__btn--prev {
  background: var(--qt-bg);
  color: var(--qt-text-muted);
  margin-right: auto;
}

.qt-quiz__btn:hover {
  transform: translateY(-2px);
  filter: brightness(1.1);
}

/* Animations */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.qt-quiz__test-item {
  animation: fadeIn 0.5s ease backwards;
}

.qt-quiz__test-item:nth-child(2n) {
  animation-delay: 0.1s;
}

.qt-quiz__test-item:nth-child(3n) {
  animation-delay: 0.2s;
}

@media (max-width: 768px) {
  .qt-quiz__tests-grid {
    grid-template-columns: 1fr;
  }

  .qt-quiz {
    padding: 26px 10px;
  }

  .qt-quiz__toolbar {
    padding: 20px 16px;
  }

  .qt-quiz__toolbar::before {
    left: 16px;
    width: 56px;
  }

  .qt-quiz__filter-group label {
    font-size: 16px;
  }

  .qt-quiz__panel--exam {
    padding: 16px;
  }

  .qt-quiz__option {
    padding: 16px 10px;
  }
}