/* ============================================================
   GAT MCQs Practice Tool — Stylesheet
   File: assets/css/gat-mcqs.css
   ============================================================ */

/* ---------- CSS Variables ---------- */
:root {
  --gat-primary:      #1a56db;
  --gat-primary-dark: #1341b0;
  --gat-accent:       #f59e0b;
  --gat-success:      #10b981;
  --gat-danger:       #ef4444;
  --gat-bg:           #f8fafc;
  --gat-card:         #ffffff;
  --gat-border:       #e2e8f0;
  --gat-text:         #1e293b;
  --gat-muted:        #64748b;
  --gat-radius:       12px;
  --gat-shadow:       0 4px 24px rgba(0,0,0,0.08);
  --gat-transition:   0.22s ease;
}

/* ---------- Layout ---------- */
.gat-main {
  max-width: 860px;
  margin: 0 auto;
  padding: 24px 16px 48px;
}

/* ---------- Breadcrumb ---------- */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  color: var(--gat-muted);
  margin-bottom: 24px;
}

.breadcrumb a {
  color: var(--gat-primary);
  text-decoration: none;
}

.breadcrumb a:hover {
  text-decoration: underline;
}

.breadcrumb-sep {
  color: var(--gat-border);
  font-size: 1rem;
}

.breadcrumb-current {
  color: var(--gat-text);
  font-weight: 500;
}

/* ---------- Tool Card ---------- */
.tool-card {
  background: var(--gat-card);
  border: 1px solid var(--gat-border);
  border-radius: var(--gat-radius);
  box-shadow: var(--gat-shadow);
  overflow: hidden;
}

/* ---------- Tool Header ---------- */
.tool-header {
  padding: 32px 32px 24px;
  background: linear-gradient(135deg, #1a56db 0%, #1e40af 100%);
  color: #fff;
}

.tool-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(255,255,255,0.18);
  border: 1px solid rgba(255,255,255,0.25);
  border-radius: 20px;
  padding: 4px 12px;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  margin-bottom: 14px;
  text-transform: uppercase;
}

.tool-header h1 {
  font-size: 1.75rem;
  font-weight: 700;
  margin: 0 0 8px;
  line-height: 1.2;
}

.tool-header p {
  margin: 0;
  opacity: 0.85;
  font-size: 0.95rem;
  max-width: 560px;
}

/* ---------- Tool Body ---------- */
.tool-body {
  padding: 28px 32px;
}

/* ---------- Tabs ---------- */
.tab-nav {
  display: flex;
  gap: 4px;
  border-bottom: 2px solid var(--gat-border);
  margin-bottom: 24px;
}

.tab-btn {
  background: none;
  border: none;
  padding: 10px 20px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--gat-muted);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  transition: color var(--gat-transition), border-color var(--gat-transition);
}

.tab-btn:hover {
  color: var(--gat-primary);
}

.tab-btn.active {
  color: var(--gat-primary);
  border-bottom-color: var(--gat-primary);
}

.tab-panel {
  display: none;
}

.tab-panel.active {
  display: block;
}

/* ---------- Filters Row ---------- */
.filters-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  align-items: center;
  margin-bottom: 24px;
}

.gat-select,
.gat-input {
  padding: 9px 14px;
  border: 1.5px solid var(--gat-border);
  border-radius: 8px;
  font-size: 0.9rem;
  color: var(--gat-text);
  background: #fff;
  outline: none;
  transition: border-color var(--gat-transition);
}

.gat-select:focus,
.gat-input:focus {
  border-color: var(--gat-primary);
}

/* ---------- Buttons ---------- */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 22px;
  background: var(--gat-primary);
  color: #fff;
  border: none;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--gat-transition), transform 0.1s;
}

.btn-primary:hover {
  background: var(--gat-primary-dark);
}

.btn-primary:active {
  transform: scale(0.97);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 20px;
  background: transparent;
  color: var(--gat-primary);
  border: 1.5px solid var(--gat-primary);
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--gat-transition);
}

.btn-secondary:hover {
  background: rgba(26,86,219,0.07);
}

/* ---------- Quiz Area ---------- */
.quiz-area {
  min-height: 200px;
  border: 1.5px dashed var(--gat-border);
  border-radius: var(--gat-radius);
  padding: 28px;
}

.quiz-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: var(--gat-muted);
  gap: 14px;
  min-height: 160px;
}

.quiz-placeholder svg {
  opacity: 0.35;
}

/* ---------- Question Block ---------- */
.question-block {
  animation: fadeSlide 0.25s ease;
}

@keyframes fadeSlide {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}

.question-text {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--gat-text);
  margin: 0 0 20px;
  line-height: 1.5;
}

.options-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  list-style: none;
  padding: 0;
  margin: 0;
}

.option-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border: 1.5px solid var(--gat-border);
  border-radius: 8px;
  cursor: pointer;
  transition: border-color var(--gat-transition), background var(--gat-transition);
  font-size: 0.93rem;
  color: var(--gat-text);
}

.option-item:hover {
  border-color: var(--gat-primary);
  background: rgba(26,86,219,0.04);
}

.option-item.selected {
  border-color: var(--gat-primary);
  background: rgba(26,86,219,0.08);
}

.option-item.correct {
  border-color: var(--gat-success);
  background: rgba(16,185,129,0.08);
  color: #065f46;
}

.option-item.wrong {
  border-color: var(--gat-danger);
  background: rgba(239,68,68,0.07);
  color: #991b1b;
}

.option-label {
  font-weight: 700;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--gat-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  flex-shrink: 0;
}

/* ---------- Quiz Navigation ---------- */
.quiz-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 20px;
}

.q-counter {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--gat-muted);
}

/* ---------- Filter Grid (Tab 2) ---------- */
.filter-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 24px;
  margin-bottom: 24px;
}

.filter-group > label {
  display: block;
  font-weight: 600;
  font-size: 0.88rem;
  color: var(--gat-text);
  margin-bottom: 10px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.checkbox-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.checkbox-list label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  color: var(--gat-text);
  cursor: pointer;
}

.checkbox-list input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: var(--gat-primary);
}

/* ---------- Results (Tab 3) ---------- */
.results-placeholder {
  text-align: center;
  padding: 40px 20px;
  color: var(--gat-muted);
  font-size: 0.95rem;
}

.results-card {
  background: var(--gat-bg);
  border-radius: var(--gat-radius);
  padding: 28px;
}

.results-score {
  font-size: 3rem;
  font-weight: 800;
  color: var(--gat-primary);
  line-height: 1;
}

.results-label {
  font-size: 0.9rem;
  color: var(--gat-muted);
  margin-top: 4px;
}

.results-stats {
  display: flex;
  gap: 24px;
  margin-top: 20px;
  flex-wrap: wrap;
}

.stat-box {
  flex: 1;
  min-width: 100px;
  background: #fff;
  border: 1px solid var(--gat-border);
  border-radius: 8px;
  padding: 14px;
  text-align: center;
}

.stat-val {
  font-size: 1.5rem;
  font-weight: 700;
}

.stat-val.green { color: var(--gat-success); }
.stat-val.red   { color: var(--gat-danger); }

.stat-lbl {
  font-size: 0.78rem;
  color: var(--gat-muted);
  margin-top: 2px;
}

/* ---------- Responsive ---------- */
@media (max-width: 600px) {
  .tool-header {
    padding: 22px 18px 18px;
  }

  .tool-body {
    padding: 18px 16px;
  }

  .tool-header h1 {
    font-size: 1.35rem;
  }

  .filters-row {
    flex-direction: column;
    align-items: stretch;
  }

  .btn-primary,
  .btn-secondary {
    width: 100%;
    justify-content: center;
  }

  .quiz-nav {
    gap: 8px;
  }
}