/* ============================================
   AUSTRALIAN GROCERY GAME - STYLESHEET
   ============================================ */

/* --- CSS Variables --- */
:root {
  --green: #00843D;
  --gold: #FFCD00;
  --dark-green: #006B2D;
  --light-green: #e8f5e9;
  --red: #e53935;
  --light-red: #ffebee;
  --blue: #1976D2;
  --light-blue: #e3f2fd;
  --orange: #FF9800;
  --light-orange: #fff3e0;
  --grey: #f5f5f5;
  --dark-grey: #333;
  --mid-grey: #777;
  --white: #fff;
  --shadow: 0 2px 12px rgba(0,0,0,0.08);
  --shadow-hover: 0 4px 20px rgba(0,0,0,0.13);
  --radius: 12px;
  --radius-sm: 8px;
  --transition: all 0.3s ease;
}

/* --- Reset & Base --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: var(--grey);
  color: var(--dark-grey);
  line-height: 1.6;
  min-height: 100vh;
}

a { text-decoration: none; color: inherit; }
ul { list-style: none; }
button { cursor: pointer; font-family: inherit; }

/* --- Top Navigation --- */
.top-nav {
  background: var(--green);
  color: var(--white);
  padding: 12px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 8px rgba(0,0,0,0.15);
}

.top-nav .logo {
  font-size: 1.3rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 8px;
}

.top-nav .nav-links {
  display: flex;
  gap: 16px;
}

.top-nav .nav-links a {
  color: var(--white);
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 0.9rem;
  transition: var(--transition);
  border: 1px solid transparent;
}

.top-nav .nav-links a:hover,
.top-nav .nav-links a.active {
  background: rgba(255,255,255,0.2);
  border-color: rgba(255,255,255,0.3);
}

/* --- Container --- */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 24px;
}

.container-wide {
  max-width: 1300px;
  margin: 0 auto;
  padding: 24px;
}

/* --- Hero Section (Index) --- */
.hero {
  background: linear-gradient(135deg, var(--green) 0%, var(--dark-green) 100%);
  color: var(--white);
  padding: 60px 24px;
  text-align: center;
  border-radius: 0 0 30px 30px;
  margin-bottom: 32px;
}

.hero h1 {
  font-size: 2.4rem;
  margin-bottom: 12px;
}

.hero p {
  font-size: 1.15rem;
  opacity: 0.9;
  max-width: 600px;
  margin: 0 auto;
}

.hero .flag-emoji {
  font-size: 3rem;
  margin-bottom: 12px;
}

/* --- Cards --- */
.card {
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 24px;
  transition: var(--transition);
}

.card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
  margin: 24px 0;
}

.card-link {
  display: block;
  border: 2px solid transparent;
}

.card-link:hover {
  border-color: var(--green);
}

.card .card-icon {
  font-size: 2.5rem;
  margin-bottom: 12px;
}

.card h3 {
  font-size: 1.2rem;
  margin-bottom: 6px;
  color: var(--dark-grey);
}

.card p {
  color: var(--mid-grey);
  font-size: 0.95rem;
}

.card .badge {
  display: inline-block;
  background: var(--light-green);
  color: var(--green);
  padding: 3px 10px;
  border-radius: 12px;
  font-size: 0.8rem;
  font-weight: 600;
  margin-top: 10px;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-weight: 600;
  border: none;
  transition: var(--transition);
}

.btn-primary {
  background: var(--green);
  color: var(--white);
}
.btn-primary:hover { background: var(--dark-green); }

.btn-secondary {
  background: var(--white);
  color: var(--green);
  border: 2px solid var(--green);
}
.btn-secondary:hover { background: var(--light-green); }

.btn-gold {
  background: var(--gold);
  color: var(--dark-grey);
}
.btn-gold:hover { background: #e6b800; }

.btn-danger {
  background: var(--red);
  color: var(--white);
}
.btn-danger:hover { background: #c62828; }

.btn-sm {
  padding: 8px 16px;
  font-size: 0.85rem;
}

.btn-block {
  display: flex;
  width: 100%;
  justify-content: center;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* --- Game Layout (Student) --- */
.game-wrapper {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 20px;
  align-items: start;
}

@media (max-width: 900px) {
  .game-wrapper {
    grid-template-columns: 1fr;
  }
}

/* --- Sidebar --- */
.sidebar {
  position: sticky;
  top: 70px;
}

.sidebar .card {
  margin-bottom: 16px;
}

.budget-display {
  text-align: center;
  padding: 16px;
}

.budget-amount {
  font-size: 2rem;
  font-weight: 800;
  color: var(--green);
}

.budget-amount.over-budget {
  color: var(--red);
}

.budget-label {
  font-size: 0.85rem;
  color: var(--mid-grey);
}

/* Shopping List Sidebar */
.shopping-list-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  margin-bottom: 4px;
  font-size: 0.9rem;
  transition: var(--transition);
}

.shopping-list-item.found {
  background: var(--light-green);
  text-decoration: line-through;
  opacity: 0.7;
}

.shopping-list-item .checkmark {
  width: 20px;
  height: 20px;
  border: 2px solid #ccc;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  flex-shrink: 0;
}

.shopping-list-item.found .checkmark {
  background: var(--green);
  border-color: var(--green);
  color: var(--white);
}

/* --- Cart Items --- */
.cart-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 0;
  border-bottom: 1px solid #eee;
  font-size: 0.9rem;
}

.cart-item:last-child { border-bottom: none; }

.cart-item .item-name {
  display: flex;
  align-items: center;
  gap: 8px;
}

.cart-item .remove-btn {
  background: none;
  border: none;
  color: var(--red);
  font-size: 1.1rem;
  cursor: pointer;
  padding: 2px 6px;
  border-radius: 4px;
}
.cart-item .remove-btn:hover { background: var(--light-red); }

/* --- Store Sections --- */
.store-map {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
  margin: 20px 0;
}

.section-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 24px 16px;
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
  border: 3px solid transparent;
  box-shadow: var(--shadow);
}

.section-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

.section-card.active {
  border-color: var(--green);
  background: var(--light-green);
}

.section-card.completed {
  border-color: var(--green);
  position: relative;
}

.section-card.completed::after {
  content: '✓';
  position: absolute;
  top: 8px;
  right: 12px;
  background: var(--green);
  color: white;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: bold;
}

.section-card .section-icon {
  font-size: 2.5rem;
  margin-bottom: 8px;
}

.section-card h4 {
  font-size: 1rem;
  margin-bottom: 4px;
}

.section-card p {
  font-size: 0.8rem;
  color: var(--mid-grey);
}

/* --- Product Grid --- */
.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 14px;
  margin: 16px 0;
}

.product-card {
  background: var(--white);
  border-radius: var(--radius-sm);
  padding: 16px;
  text-align: center;
  border: 2px solid #eee;
  transition: var(--transition);
  cursor: pointer;
  position: relative;
}

.product-card:hover {
  border-color: var(--green);
  box-shadow: var(--shadow);
}

.product-card.in-cart {
  border-color: var(--green);
  background: var(--light-green);
}

.product-card .product-emoji {
  font-size: 2.2rem;
  margin-bottom: 8px;
}

.product-card .product-name {
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 2px;
}

.product-card .product-weight {
  font-size: 0.8rem;
  color: var(--mid-grey);
  margin-bottom: 8px;
}

.product-card .product-price {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--green);
}

.product-card .add-btn {
  position: absolute;
  top: 8px;
  right: 8px;
  background: var(--green);
  color: white;
  border: none;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: var(--transition);
}

.product-card:hover .add-btn { opacity: 1; }
.product-card.in-cart .add-btn {
  opacity: 1;
  background: var(--red);
}

/* On-list indicator */
.product-card .on-list-tag {
  position: absolute;
  top: 8px;
  left: 8px;
  background: var(--gold);
  color: var(--dark-grey);
  font-size: 0.65rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 10px;
}

/* --- Dialogue Box --- */
.dialogue-overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0,0,0,0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  padding: 20px;
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.dialogue-box {
  background: var(--white);
  border-radius: var(--radius);
  max-width: 550px;
  width: 100%;
  box-shadow: 0 10px 40px rgba(0,0,0,0.2);
  overflow: hidden;
  animation: slideUp 0.3s ease;
}

@keyframes slideUp {
  from { transform: translateY(30px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

.dialogue-header {
  background: var(--green);
  color: var(--white);
  padding: 16px 20px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.dialogue-header .speaker-avatar {
  font-size: 2rem;
}

.dialogue-header .speaker-name {
  font-weight: 700;
  font-size: 1rem;
}

.dialogue-header .speaker-role {
  font-size: 0.8rem;
  opacity: 0.8;
}

.dialogue-body {
  padding: 20px;
}

.dialogue-text {
  background: var(--grey);
  padding: 14px 18px;
  border-radius: var(--radius-sm);
  margin-bottom: 16px;
  font-size: 1.05rem;
  line-height: 1.6;
  border-left: 4px solid var(--green);
}

.dialogue-options {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.dialogue-option {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  border: 2px solid #e0e0e0;
  border-radius: var(--radius-sm);
  background: var(--white);
  cursor: pointer;
  transition: var(--transition);
  font-size: 0.95rem;
  text-align: left;
}

.dialogue-option:hover {
  border-color: var(--blue);
  background: var(--light-blue);
}

.dialogue-option.correct {
  border-color: var(--green);
  background: var(--light-green);
}

.dialogue-option.wrong {
  border-color: var(--red);
  background: var(--light-red);
}

.dialogue-option.partial {
  border-color: var(--orange);
  background: var(--light-orange);
}

.dialogue-feedback {
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  margin-top: 12px;
  font-size: 0.9rem;
  display: none;
}

.dialogue-feedback.show { display: block; }
.dialogue-feedback.good { background: var(--light-green); color: var(--dark-green); }
.dialogue-feedback.bad { background: var(--light-red); color: var(--red); }
.dialogue-feedback.ok { background: var(--light-orange); color: #e65100; }

.dialogue-footer {
  padding: 12px 20px;
  text-align: right;
  border-top: 1px solid #eee;
}

/* --- Phase/Screen Indicators --- */
.phase-bar {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-bottom: 24px;
  padding: 16px 20px;
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow-x: auto;
}

.phase-step {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 0.85rem;
  white-space: nowrap;
  color: var(--mid-grey);
  background: var(--grey);
  transition: var(--transition);
}

.phase-step.active {
  background: var(--green);
  color: var(--white);
  font-weight: 600;
}

.phase-step.done {
  background: var(--light-green);
  color: var(--green);
}

.phase-connector {
  width: 20px;
  height: 2px;
  background: #ddd;
  flex-shrink: 0;
}

/* --- Screens (show/hide) --- */
.screen { display: none; }
.screen.active { display: block; }

/* --- Results Screen --- */
.results-card {
  text-align: center;
  padding: 40px;
}

.results-card .score-circle {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background: var(--green);
  color: var(--white);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  font-size: 2rem;
  font-weight: 800;
}

.results-card .score-circle span {
  font-size: 0.8rem;
  font-weight: 400;
  opacity: 0.8;
}

.results-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin: 24px 0;
}

.stat-box {
  background: var(--grey);
  padding: 16px;
  border-radius: var(--radius-sm);
}

.stat-box .stat-value {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--green);
}

.stat-box .stat-label {
  font-size: 0.8rem;
  color: var(--mid-grey);
}

/* --- Vocab Box --- */
.vocab-box {
  background: var(--light-blue);
  border: 1px solid #bbdefb;
  border-radius: var(--radius-sm);
  padding: 14px 18px;
  margin: 12px 0;
}

.vocab-box h4 {
  color: var(--blue);
  margin-bottom: 6px;
  font-size: 0.9rem;
}

.vocab-box .vocab-word {
  font-weight: 700;
}

.vocab-box .vocab-meaning {
  color: var(--mid-grey);
  font-size: 0.9rem;
}

/* --- Tip Box --- */
.tip-box {
  background: var(--light-orange);
  border: 1px solid #ffe0b2;
  border-radius: var(--radius-sm);
  padding: 14px 18px;
  margin: 12px 0;
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.tip-box .tip-icon { font-size: 1.3rem; }

/* --- Teacher Page --- */
.teacher-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

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

.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  font-weight: 600;
  margin-bottom: 6px;
  font-size: 0.9rem;
}

.form-group select,
.form-group input[type="number"],
.form-group input[type="text"] {
  width: 100%;
  padding: 10px 14px;
  border: 2px solid #e0e0e0;
  border-radius: var(--radius-sm);
  font-size: 1rem;
  transition: var(--transition);
}

.form-group select:focus,
.form-group input:focus {
  outline: none;
  border-color: var(--green);
}

.checkbox-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.checkbox-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  background: var(--grey);
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  cursor: pointer;
  transition: var(--transition);
}

.checkbox-item:hover { background: var(--light-green); }

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

/* --- Section Header --- */
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  flex-wrap: wrap;
  gap: 12px;
}

.section-header h2 {
  display: flex;
  align-items: center;
  gap: 10px;
}

/* --- Notification Toast --- */
.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: var(--dark-grey);
  color: var(--white);
  padding: 14px 24px;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  z-index: 3000;
  animation: slideInRight 0.3s ease, fadeOut 0.3s ease 2.5s forwards;
  display: flex;
  align-items: center;
  gap: 10px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.3);
}

@keyframes slideInRight {
  from { transform: translateX(100px); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

@keyframes fadeOut {
  to { opacity: 0; transform: translateY(10px); }
}

.toast.success { background: var(--green); }
.toast.error { background: var(--red); }
.toast.warning { background: var(--orange); }

/* --- Intro/Welcome Styling --- */
.welcome-content {
  text-align: center;
  padding: 40px 20px;
}

.welcome-content .store-choice {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin: 24px 0;
}

.store-option {
  padding: 20px 30px;
  border: 3px solid #e0e0e0;
  border-radius: var(--radius);
  cursor: pointer;
  transition: var(--transition);
  background: var(--white);
  text-align: center;
}

.store-option:hover { border-color: var(--green); }
.store-option.selected {
  border-color: var(--green);
  background: var(--light-green);
}

.store-option .store-logo { font-size: 2rem; margin-bottom: 6px; }

/* --- Responsive --- */
@media (max-width: 600px) {
  .hero h1 { font-size: 1.6rem; }
  .phase-bar { padding: 10px; gap: 2px; }
  .phase-step { padding: 4px 10px; font-size: 0.75rem; }
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .results-stats { grid-template-columns: 1fr; }
  .store-map { grid-template-columns: repeat(2, 1fr); }
}

/* --- Print (Teacher) --- */
@media print {
  .top-nav, .btn, .no-print { display: none !important; }
  body { background: white; }
  .card { box-shadow: none; border: 1px solid #ddd; }
}

/* --- Animations --- */
.bounce {
  animation: bounce 0.5s ease;
}

@keyframes bounce {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.1); }
}

.pulse {
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(0, 132, 61, 0.4); }
  70% { box-shadow: 0 0 0 10px rgba(0, 132, 61, 0); }
  100% { box-shadow: 0 0 0 0 rgba(0, 132, 61, 0); }
}

<style>
    .game-area { min-height: 60vh; }
    .list-preview {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
      gap: 10px;
      margin: 16px 0;
    }
    .list-preview-item {
      display: flex;
      align-items: center;
      gap: 10px;
      padding: 10px 14px;
      background: var(--grey);
      border-radius: var(--radius-sm);
      font-size: 0.9rem;
    }
    .list-preview-item .item-emoji { font-size: 1.3rem; }
    .section-back-bar {
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 16px;
      flex-wrap: wrap;
      gap: 12px;
    }
    .section-back-bar h2 {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 1.3rem;
    }
    .directions-panel {
      background: linear-gradient(135deg, #fff8e1, #f1f8e9);
      border: 2px solid #dce775;
      border-radius: var(--radius);
      padding: 18px;
      margin-bottom: 18px;
    }
    .directions-panel.hidden { display: none; }
    .directions-panel h3 {
      margin-bottom: 8px;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .directions-layout {
      display: grid;
      grid-template-columns: minmax(220px, 280px) 1fr;
      gap: 18px;
      margin-top: 16px;
    }
    .section-bank {
      display: grid;
      gap: 10px;
      align-content: start;
    }
    .direction-token {
      border: 2px solid #d9d9d9;
      background: white;
      border-radius: var(--radius-sm);
      padding: 12px 14px;
      text-align: left;
      cursor: pointer;
      transition: var(--transition);
      font: inherit;
    }
    .direction-token.selected {
      border-color: var(--blue);
      box-shadow: 0 0 0 3px rgba(25, 118, 210, 0.12);
    }
    .direction-token.correct {
      border-color: var(--green);
      background: var(--light-green);
      color: var(--dark-green);
    }
    .direction-token .token-name {
      font-weight: 700;
      display: block;
      margin-bottom: 4px;
    }
    .direction-grid {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 12px;
    }
    .direction-slot {
      min-height: 130px;
      border: 2px dashed #bdbdbd;
      border-radius: var(--radius-sm);
      background: rgba(255,255,255,0.7);
      padding: 12px;
      cursor: pointer;
      transition: var(--transition);
    }
    .direction-slot.selected-target,
    .direction-slot:hover {
      border-color: var(--gold);
      background: #fffde7;
    }
    .direction-slot.correct {
      border-style: solid;
      border-color: var(--green);
      background: var(--light-green);
    }
    .direction-slot.wrong {
      border-style: solid;
      border-color: var(--red);
      background: var(--light-red);
    }
    .direction-slot-label {
      font-size: 0.8rem;
      font-weight: 700;
      color: var(--mid-grey);
      text-transform: uppercase;
      letter-spacing: 0.04em;
      margin-bottom: 6px;
    }
    .direction-slot-hint {
      font-size: 0.8rem;
      color: var(--mid-grey);
      margin-bottom: 10px;
    }
    .direction-slot-section {
      font-weight: 700;
      margin-bottom: 8px;
    }
    .direction-slot-status {
      font-size: 0.8rem;
      font-weight: 600;
    }
    .section-card.locked {
      opacity: 0.7;
      border-style: dashed;
    }
    .section-card.locked .lock-note {
      margin-top: 8px;
      font-size: 0.78rem;
      color: var(--red);
      font-weight: 600;
    }
    @media (max-width: 900px) {
      .directions-layout { grid-template-columns: 1fr; }
    }
    @media (max-width: 640px) {
      .direction-grid { grid-template-columns: 1fr; }
    }
    .dialogue-progress {
      display: flex;
      gap: 6px;
      margin-bottom: 12px;
    }
    .dialogue-dot {
      width: 10px;
      height: 10px;
      border-radius: 50%;
      background: #ddd;
    }
    .dialogue-dot.active { background: var(--green); }
    .dialogue-dot.done { background: var(--dark-green); }
    .self-checkout-screen {
      max-width: 600px;
      margin: 0 auto;
    }
    .self-checkout-machine {
      background: #1a1a2e;
      border-radius: var(--radius);
      padding: 32px 24px;
      text-align: center;
      color: white;
      margin-bottom: 20px;
    }
    .self-checkout-machine .machine-screen {
      background: #16213e;
      border: 2px solid #0f3460;
      border-radius: var(--radius-sm);
      padding: 24px;
      margin-bottom: 20px;
      min-height: 100px;
    }
    .self-checkout-machine .machine-screen p { font-size: 1.1rem; line-height: 1.6; }
    .self-checkout-machine .machine-options { display: flex; flex-direction: column; gap: 10px; }
    .self-checkout-machine .machine-btn {
      padding: 14px 20px;
      border: 2px solid #0f3460;
      background: #16213e;
      color: white;
      border-radius: var(--radius-sm);
      font-size: 1rem;
      cursor: pointer;
      transition: var(--transition);
      text-align: left;
    }
    .self-checkout-machine .machine-btn:hover { border-color: var(--gold); background: #0f3460; }
    .self-checkout-machine .machine-btn.correct-choice { border-color: var(--green); background: rgba(0, 132, 61, 0.3); }
    .self-checkout-machine .machine-btn.wrong-choice { border-color: var(--red); background: rgba(229, 57, 53, 0.3); }
    .machine-feedback { padding: 12px 16px; border-radius: var(--radius-sm); margin-top: 12px; font-size: 0.9rem; text-align: left; }
    .machine-feedback.good { background: rgba(0,132,61,0.2); color: #66bb6a; }
    .machine-feedback.bad { background: rgba(229,57,53,0.2); color: #ef5350; }
    .self-checkout-progress { display: flex; gap: 4px; justify-content: center; margin-bottom: 16px; }
    .sc-step { width: 30px; height: 6px; border-radius: 3px; background: #333; }
    .sc-step.done { background: var(--green); }
    .sc-step.active { background: var(--gold); }
    .quiz-card { max-width: 650px; margin: 0 auto; }
    .quiz-question-number { font-size: 0.85rem; color: var(--mid-grey); margin-bottom: 8px; }
    .quiz-question {
      font-size: 1.1rem; font-weight: 600; margin-bottom: 16px; line-height: 1.5;
      background: var(--grey); padding: 16px; border-radius: var(--radius-sm); border-left: 4px solid var(--blue);
    }
    .achievements-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
      gap: 12px;
      margin: 20px 0;
    }
    .achievement-item {
      text-align: center; padding: 16px 12px; background: var(--grey);
      border-radius: var(--radius-sm); opacity: 0.4; transition: var(--transition);
    }
    .achievement-item.unlocked { opacity: 1; background: var(--light-green); border: 2px solid var(--green); }
    .achievement-item .achievement-icon { font-size: 2rem; margin-bottom: 6px; }
    .achievement-item .achievement-name { font-weight: 700; font-size: 0.85rem; }
    .achievement-item .achievement-desc { font-size: 0.75rem; color: var(--mid-grey); margin-top: 2px; }
    .vocab-learned-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
      gap: 10px;
      margin: 16px 0;
    }
    .vocab-learned-item { padding: 10px 14px; background: var(--light-blue); border-radius: var(--radius-sm); border-left: 3px solid var(--blue); }
    .vocab-learned-item .vl-word { font-weight: 700; font-size: 0.95rem; }
    .vocab-learned-item .vl-meaning { font-size: 0.83rem; color: var(--mid-grey); }
    .timer-display { text-align: center; font-size: 0.85rem; color: var(--mid-grey); }
    .timer-display .timer-value { font-weight: 700; font-size: 1rem; color: var(--dark-grey); }