/* ============================================
   MathQuest KSSR - Hand-drawn Style CSS
   ============================================ */

/* === CSS Variables === */
:root {
  --bg-warm: #FFF8E7;
  --primary: #FF9F43;
  --primary-dark: #E8890C;
  --blue: #54A0FF;
  --blue-dark: #2E86DE;
  --green: #2ED573;
  --green-dark: #26AE60;
  --pink: #FF6B81;
  --purple: #A29BFE;
  --text-dark: #2D3436;
  --text-light: #636E72;
  --correct: #00B894;
  --wrong: #FF7675;
  --white: #FFFFFF;
  --shadow: rgba(45, 52, 54, 0.12);
  --card-bg: #FFFDF5;
  --border-color: #DFD3B6;
  --font-display: 'Fredoka', 'Noto Sans SC', sans-serif;
  --font-body: 'Noto Sans SC', 'Fredoka', sans-serif;
  --radius-sm: 12px;
  --radius-md: 20px;
  --radius-lg: 28px;
  --radius-xl: 36px;
}

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

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-warm);
  color: var(--text-dark);
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
  /* Paper texture */
  background-image:
    radial-gradient(ellipse at 20% 50%, rgba(255, 159, 67, 0.05) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 20%, rgba(84, 160, 255, 0.05) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 80%, rgba(46, 213, 115, 0.05) 0%, transparent 50%);
}

/* === Background Decorations === */
.bg-decorations {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.cloud {
  position: absolute;
  font-size: 4rem;
  opacity: 0.15;
  color: var(--blue);
  animation: floatCloud 20s ease-in-out infinite;
}
.cloud-1 { top: 8%; left: 5%; animation-delay: 0s; }
.cloud-2 { top: 15%; right: 10%; animation-delay: -8s; font-size: 3rem; }

.star-bg {
  position: absolute;
  font-size: 1.5rem;
  opacity: 0.2;
  color: var(--primary);
  animation: twinkle 3s ease-in-out infinite;
}
.star-1 { top: 20%; left: 15%; animation-delay: 0s; }
.star-2 { top: 40%; right: 8%; animation-delay: -1s; }
.star-3 { bottom: 25%; left: 20%; animation-delay: -2s; }

.rainbow-deco {
  position: absolute;
  bottom: 5%;
  right: 5%;
  font-size: 3rem;
  opacity: 0.15;
}

@keyframes floatCloud {
  0%, 100% { transform: translateX(0) translateY(0); }
  50% { transform: translateX(20px) translateY(-10px); }
}

@keyframes twinkle {
  0%, 100% { opacity: 0.2; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.2); }
}

/* === Screen System === */
.screen {
  display: none;
  position: relative;
  z-index: 1;
  min-height: 100vh;
  animation: fadeIn 0.4s ease-out;
}

.screen.active {
  display: flex;
  flex-direction: column;
}

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

/* === Hand-drawn Borders (SVG filter simulation) === */
.hand-drawn {
  border: 3px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: 2px 3px 0px var(--shadow);
  position: relative;
}

.hand-drawn::before {
  content: '';
  position: absolute;
  inset: -2px;
  border: 2px solid transparent;
  border-radius: inherit;
  background: repeating-linear-gradient(
    90deg,
    transparent,
    transparent 4px,
    rgba(45, 52, 54, 0.03) 4px,
    rgba(45, 52, 54, 0.03) 5px
  );
  pointer-events: none;
}

/* === Buttons === */
.btn {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 600;
  padding: 14px 32px;
  border: 3px solid var(--border-color);
  border-radius: var(--radius-xl);
  cursor: pointer;
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  position: relative;
  outline: none;
  text-decoration: none;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}

.btn:active {
  transform: scale(0.95);
}

.btn-primary {
  background: var(--primary);
  color: var(--white);
  border-color: var(--primary-dark);
  box-shadow: 0 4px 0 var(--primary-dark), 0 6px 12px var(--shadow);
}

.btn-primary:hover {
  transform: scale(1.05) translateY(-2px);
  box-shadow: 0 6px 0 var(--primary-dark), 0 8px 16px var(--shadow);
}

.btn-secondary {
  background: var(--blue);
  color: var(--white);
  border-color: var(--blue-dark);
  box-shadow: 0 4px 0 var(--blue-dark), 0 6px 12px var(--shadow);
}

.btn-secondary:hover {
  transform: scale(1.05) translateY(-2px);
  box-shadow: 0 6px 0 var(--blue-dark), 0 8px 16px var(--shadow);
}

.btn-small {
  font-size: 1rem;
  padding: 8px 16px;
  border-radius: var(--radius-lg);
}

.btn-back {
  background: var(--white);
  color: var(--text-dark);
  border-color: var(--border-color);
  box-shadow: 0 3px 0 var(--border-color);
}

.btn-parent {
  background: var(--purple);
  color: var(--white);
  border-color: #8B80F0;
  box-shadow: 0 3px 0 #8B80F0;
  font-size: 1.2rem;
  padding: 8px 14px;
}

.btn-bounce:hover {
  animation: bounce 0.5s ease;
}

@keyframes bounce {
  0%, 100% { transform: scale(1.05) translateY(-2px); }
  30% { transform: scale(1.05) translateY(-8px); }
  60% { transform: scale(1.05) translateY(-4px); }
}

.btn-icon {
  font-size: 1.3em;
}

/* === Inputs === */
.hand-drawn-input {
  font-family: var(--font-display);
  font-size: 1.3rem;
  padding: 12px 20px;
  border: 3px solid var(--border-color);
  border-radius: var(--radius-lg);
  background: var(--white);
  color: var(--text-dark);
  outline: none;
  width: 100%;
  max-width: 320px;
  text-align: center;
  transition: border-color 0.3s, box-shadow 0.3s;
}

.hand-drawn-input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(255, 159, 67, 0.2);
}

.hand-drawn-input::placeholder {
  color: #C4B896;
}

.hand-drawn-select {
  font-family: var(--font-display);
  font-size: 1rem;
  padding: 8px 16px;
  border: 3px solid var(--border-color);
  border-radius: var(--radius-md);
  background: var(--white);
  color: var(--text-dark);
  outline: none;
  cursor: pointer;
}

/* === Welcome Screen === */
.welcome-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 2rem;
  text-align: center;
  gap: 1rem;
}

.welcome-mascot {
  font-size: 6rem;
  animation: mascotBounce 2s ease-in-out infinite;
}

@keyframes mascotBounce {
  0%, 100% { transform: translateY(0) rotate(-5deg); }
  50% { transform: translateY(-15px) rotate(5deg); }
}

.game-title {
  font-family: var(--font-display);
  font-size: 3.5rem;
  font-weight: 700;
  color: var(--primary);
  text-shadow: 3px 3px 0 rgba(255, 159, 67, 0.2);
  letter-spacing: 2px;
}

.game-subtitle {
  font-family: var(--font-display);
  font-size: 1.5rem;
  color: var(--text-light);
  margin-bottom: 1rem;
}

.welcome-input-group {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.input-label {
  font-family: var(--font-display);
  font-size: 1.2rem;
  color: var(--text-light);
}

.welcome-deco {
  display: flex;
  gap: 1.5rem;
  font-size: 2rem;
  margin-top: 1rem;
}

.welcome-deco span {
  animation: decoFloat 3s ease-in-out infinite;
}
.welcome-deco span:nth-child(2) { animation-delay: -1s; }
.welcome-deco span:nth-child(3) { animation-delay: -2s; }

@keyframes decoFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

/* === Game Header === */
.game-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 20px;
  background: var(--white);
  border-bottom: 3px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 10;
  flex-wrap: wrap;
  gap: 8px;
}

.game-header-ingame {
  background: linear-gradient(135deg, var(--white) 0%, #FFF5E6 100%);
}

.player-greeting {
  font-family: var(--font-display);
  font-size: 1.2rem;
  color: var(--text-dark);
  font-weight: 500;
}

.header-center {
  display: flex;
  align-items: center;
  gap: 16px;
}

.score-display, .level-display {
  display: flex;
  align-items: center;
  gap: 4px;
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
}

.score-icon {
  font-size: 1.3rem;
}

.level-badge {
  font-size: 1.3rem;
}

.level-name {
  color: var(--primary-dark);
  font-weight: 600;
}

/* === Home Content === */
.home-content {
  flex: 1;
  padding: 1.5rem;
  max-width: 900px;
  margin: 0 auto;
  width: 100%;
}

.section-title {
  font-family: var(--font-display);
  font-size: 1.8rem;
  color: var(--text-dark);
  text-align: center;
  margin-bottom: 1.5rem;
}

/* === Game Grid === */
.game-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1.2rem;
  padding-bottom: 1rem;
}

.game-card {
  background: var(--card-bg);
  border: 3px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  text-align: center;
  cursor: pointer;
  transition: all 0.25s ease;
  position: relative;
  overflow: hidden;
  box-shadow: 0 4px 0 var(--shadow), 0 6px 16px var(--shadow);
}

.game-card:hover {
  transform: translateY(-4px) scale(1.02);
  box-shadow: 0 8px 0 var(--shadow), 0 12px 24px var(--shadow);
}

.game-card:active {
  transform: translateY(0) scale(0.98);
}

.game-card.disabled {
  opacity: 0.5;
  pointer-events: none;
  filter: grayscale(0.5);
}

.game-card-icon {
  font-size: 3rem;
  margin-bottom: 0.5rem;
  display: block;
}

.game-card-title {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 0.3rem;
}

.game-card-desc {
  font-size: 0.9rem;
  color: var(--text-light);
}

.game-card-stars {
  margin-top: 0.5rem;
  font-size: 0.9rem;
  color: var(--primary);
  font-family: var(--font-display);
}

/* Card color themes */
.game-card[data-color="orange"] { border-color: var(--primary); }
.game-card[data-color="orange"]:hover { background: #FFF5E6; }
.game-card[data-color="blue"] { border-color: var(--blue); }
.game-card[data-color="blue"]:hover { background: #EBF5FF; }
.game-card[data-color="green"] { border-color: var(--green); }
.game-card[data-color="green"]:hover { background: #EAFFF3; }
.game-card[data-color="pink"] { border-color: var(--pink); }
.game-card[data-color="pink"]:hover { background: #FFF0F2; }
.game-card[data-color="purple"] { border-color: var(--purple); }
.game-card[data-color="purple"]:hover { background: #F3F2FF; }

/* === Progress Section === */
.progress-section {
  padding: 1rem 1.5rem 1.5rem;
  max-width: 900px;
  margin: 0 auto;
  width: 100%;
}

.progress-label {
  font-family: var(--font-display);
  font-size: 0.95rem;
  color: var(--text-light);
  text-align: center;
  margin-bottom: 8px;
}

.progress-bar-container {
  height: 16px;
  background: var(--white);
  border: 2px solid var(--border-color);
  border-radius: 20px;
  overflow: hidden;
  position: relative;
}

.progress-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary), var(--green));
  border-radius: 20px;
  transition: width 0.6s ease;
  position: relative;
}

.progress-bar-fill::after {
  content: '';
  position: absolute;
  top: 2px;
  left: 4px;
  right: 4px;
  height: 4px;
  background: rgba(255,255,255,0.4);
  border-radius: 10px;
}

/* === Game Area === */
.game-area {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  max-width: 700px;
  margin: 0 auto;
  width: 100%;
  gap: 1.5rem;
}

.question-display {
  background: var(--card-bg);
  border: 3px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2rem;
  text-align: center;
  width: 100%;
  box-shadow: 0 4px 0 var(--shadow);
  position: relative;
}

.question-text {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 600;
  color: var(--text-dark);
  line-height: 1.4;
  margin-bottom: 0.5rem;
}

.question-visual {
  font-size: 2.5rem;
  margin: 1rem 0;
  line-height: 1.6;
}

.question-hint {
  font-size: 1rem;
  color: var(--text-light);
  font-style: italic;
}

/* === Answer Options === */
.answer-options {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  width: 100%;
  max-width: 500px;
}

.answer-btn {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 600;
  padding: 16px 20px;
  border: 3px solid var(--border-color);
  border-radius: var(--radius-md);
  background: var(--white);
  color: var(--text-dark);
  cursor: pointer;
  transition: all 0.2s ease;
  box-shadow: 0 3px 0 var(--shadow);
  position: relative;
  overflow: hidden;
}

.answer-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 5px 0 var(--shadow);
  border-color: var(--primary);
}

.answer-btn:active {
  transform: translateY(1px);
  box-shadow: 0 1px 0 var(--shadow);
}

.answer-btn.correct {
  background: var(--correct);
  color: var(--white);
  border-color: #00A383;
  animation: correctPulse 0.5s ease;
}

.answer-btn.wrong {
  background: var(--wrong);
  color: var(--white);
  border-color: #E66767;
  animation: wrongShake 0.5s ease;
}

@keyframes correctPulse {
  0% { transform: scale(1); }
  50% { transform: scale(1.08); }
  100% { transform: scale(1); }
}

@keyframes wrongShake {
  0%, 100% { transform: translateX(0); }
  20% { transform: translateX(-8px); }
  40% { transform: translateX(8px); }
  60% { transform: translateX(-5px); }
  80% { transform: translateX(5px); }
}

/* === Input Answer === */
.answer-input-group {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: center;
}

.answer-input {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 600;
  padding: 12px 20px;
  border: 3px solid var(--border-color);
  border-radius: var(--radius-md);
  background: var(--white);
  color: var(--text-dark);
  text-align: center;
  width: 120px;
  outline: none;
  transition: border-color 0.3s;
}

.answer-input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(255, 159, 67, 0.2);
}

.btn-submit-answer {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 600;
  padding: 12px 24px;
  border: 3px solid var(--green-dark);
  border-radius: var(--radius-md);
  background: var(--green);
  color: var(--white);
  cursor: pointer;
  box-shadow: 0 3px 0 var(--green-dark);
  transition: all 0.2s;
}

.btn-submit-answer:hover {
  transform: translateY(-2px);
  box-shadow: 0 5px 0 var(--green-dark);
}

/* === Feedback Overlay === */
.feedback-overlay {
  position: fixed;
  top: 10%;
  left: 50%;
  transform: translateX(-50%);
  width: auto;
  max-width: 80%;
  display: none;
  z-index: 100;
  pointer-events: none;
}

.feedback-overlay.show {
  display: block;
}

.feedback-content {
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 700;
  padding: 0.8rem 2rem;
  border-radius: var(--radius-xl);
  animation: feedbackPop 0.6s ease;
  text-align: center;
  white-space: nowrap;
}

.feedback-content.correct {
  background: rgba(0, 184, 148, 0.95);
  color: var(--white);
  box-shadow: 0 8px 32px rgba(0, 184, 148, 0.3);
}

.feedback-content.wrong {
  background: rgba(255, 118, 117, 0.95);
  color: var(--white);
  box-shadow: 0 8px 32px rgba(255, 118, 117, 0.3);
}

@keyframes feedbackPop {
  0% { transform: scale(0); opacity: 0; }
  50% { transform: scale(1.15); }
  100% { transform: scale(1); opacity: 1; }
}

/* === Results Screen === */
.results-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 2rem;
  text-align: center;
  gap: 1.2rem;
}

.results-mascot {
  font-size: 5rem;
  animation: mascotBounce 2s ease-in-out infinite;
}

.results-title {
  font-family: var(--font-display);
  font-size: 2.2rem;
  color: var(--primary);
}

.results-stats {
  display: flex;
  gap: 2rem;
  flex-wrap: wrap;
  justify-content: center;
}

.stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  background: var(--card-bg);
  border: 3px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1rem 1.5rem;
  min-width: 100px;
  box-shadow: 0 3px 0 var(--shadow);
}

.stat-icon {
  font-size: 1.8rem;
}

.stat-label {
  font-size: 0.9rem;
  color: var(--text-light);
}

.stat-value {
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--primary);
}

.results-message {
  font-family: var(--font-display);
  font-size: 1.2rem;
  color: var(--text-light);
  max-width: 400px;
}

.results-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  justify-content: center;
  margin-top: 0.5rem;
}

/* === Modal === */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(45, 52, 54, 0.5);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 200;
  padding: 1rem;
}

.modal-overlay.show {
  display: flex;
}

.modal-content {
  background: var(--bg-warm);
  border: 3px solid var(--border-color);
  border-radius: var(--radius-lg);
  max-width: 600px;
  width: 100%;
  max-height: 85vh;
  overflow-y: auto;
  box-shadow: 0 12px 40px var(--shadow);
  animation: modalSlideIn 0.3s ease;
}

@keyframes modalSlideIn {
  from { transform: translateY(20px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.5rem;
  border-bottom: 2px solid var(--border-color);
}

.modal-header h2 {
  font-family: var(--font-display);
  font-size: 1.4rem;
}

.btn-close-modal {
  font-size: 1.8rem;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-light);
  padding: 4px 8px;
  line-height: 1;
}

.modal-body {
  padding: 1.5rem;
}

/* === Parent Panel === */
.parent-section {
  text-align: center;
}

.pin-hint {
  color: var(--text-light);
  margin-bottom: 1rem;
  font-size: 0.95rem;
}

.pin-input {
  max-width: 180px;
  letter-spacing: 8px;
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

.error-text {
  color: var(--wrong);
  font-family: var(--font-display);
  margin-top: 0.5rem;
}

/* Parent Tabs */
.parent-tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
  justify-content: center;
}

.parent-tab {
  font-family: var(--font-display);
  font-size: 0.95rem;
  padding: 8px 16px;
  border: 2px solid var(--border-color);
  border-radius: var(--radius-lg);
  background: var(--white);
  cursor: pointer;
  transition: all 0.2s;
  color: var(--text-dark);
}

.parent-tab.active {
  background: var(--primary);
  color: var(--white);
  border-color: var(--primary-dark);
}

.tab-content {
  display: none;
}

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

/* Progress tab */
.child-info {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
  font-family: var(--font-display);
  font-size: 1.2rem;
}

.child-name-display {
  font-weight: 600;
  color: var(--primary);
}

.subject-progress {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.subject-row {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--white);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 10px 16px;
}

.subject-row-icon {
  font-size: 1.5rem;
}

.subject-row-name {
  font-family: var(--font-display);
  font-weight: 500;
  min-width: 100px;
  text-align: left;
}

.subject-row-bar {
  flex: 1;
  height: 12px;
  background: #F0E6D0;
  border-radius: 10px;
  overflow: hidden;
}

.subject-row-fill {
  height: 100%;
  border-radius: 10px;
  transition: width 0.5s ease;
}

.subject-row-stars {
  font-family: var(--font-display);
  font-weight: 600;
  color: var(--primary);
  min-width: 50px;
  text-align: right;
}

/* Settings tab */
.settings-group {
  margin-bottom: 1.5rem;
}

.settings-group h3 {
  font-family: var(--font-display);
  font-size: 1.1rem;
  margin-bottom: 0.8rem;
  color: var(--text-dark);
}

.setting-control {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 0.8rem;
  flex-wrap: wrap;
}

.setting-control label {
  font-family: var(--font-display);
  font-size: 0.95rem;
  min-width: 140px;
  text-align: left;
}

.small-input {
  max-width: 120px;
  font-size: 1rem;
  padding: 8px 12px;
}

.unit-toggles {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 8px;
}

.unit-toggle {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  background: var(--white);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-family: var(--font-display);
  font-size: 0.9rem;
}

.unit-toggle input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: var(--primary);
}

/* Customize tab */
.customize-section h3 {
  font-family: var(--font-display);
  font-size: 1.1rem;
  margin-bottom: 0.3rem;
}

.customize-hint {
  color: var(--text-light);
  font-size: 0.9rem;
  margin-bottom: 1rem;
}

.customize-form {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 1.5rem;
}

.form-row {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.form-row label {
  font-family: var(--font-display);
  font-size: 0.95rem;
  min-width: 80px;
  text-align: left;
}

.form-row .hand-drawn-input {
  max-width: 100%;
  flex: 1;
  text-align: left;
}

.custom-questions-list h4 {
  font-family: var(--font-display);
  font-size: 1rem;
  margin-bottom: 0.5rem;
}

.custom-questions-list ul {
  list-style: none;
  padding: 0;
}

.custom-questions-list li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 12px;
  background: var(--white);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-sm);
  margin-bottom: 6px;
  font-family: var(--font-display);
  font-size: 0.9rem;
}

.btn-remove-question {
  background: var(--wrong);
  color: var(--white);
  border: none;
  border-radius: 50%;
  width: 24px;
  height: 24px;
  font-size: 0.8rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* === Celebration Overlay === */
.celebration-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 300;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 248, 231, 0.8);
}

.celebration-content {
  text-align: center;
  z-index: 2;
}

.celebration-text {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--primary);
  text-shadow: 2px 2px 0 rgba(255, 159, 67, 0.3);
  animation: celebPop 0.8s ease;
}

@keyframes celebPop {
  0% { transform: scale(0) rotate(-10deg); opacity: 0; }
  60% { transform: scale(1.2) rotate(5deg); }
  100% { transform: scale(1) rotate(0deg); opacity: 1; }
}

.confetti-container {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  overflow: hidden;
}

.confetti {
  position: absolute;
  width: 12px;
  height: 12px;
  border-radius: 2px;
  animation: confettiFall 3s ease-out forwards;
}

@keyframes confettiFall {
  0% { transform: translateY(-20px) rotate(0deg); opacity: 1; }
  100% { transform: translateY(100vh) rotate(720deg); opacity: 0; }
}

/* === Number Line / Visual Helpers === */
.number-line {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  flex-wrap: wrap;
  margin: 1rem 0;
}

.number-dot {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 600;
  border: 2px solid var(--border-color);
  background: var(--white);
  color: var(--text-dark);
}

.number-dot.highlighted {
  background: var(--primary);
  color: var(--white);
  border-color: var(--primary-dark);
  transform: scale(1.15);
}

/* === Shape Display === */
.shape-display {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  flex-wrap: wrap;
  margin: 1rem 0;
}

.shape-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  transition: transform 0.2s;
}

.shape-item:hover {
  transform: scale(1.1);
}

.shape-svg {
  width: 80px;
  height: 80px;
}

.shape-name {
  font-family: var(--font-display);
  font-size: 1rem;
  color: var(--text-dark);
}

/* === Comparison Display === */
.compare-display {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 700;
  margin: 1rem 0;
}

.compare-num {
  background: var(--white);
  border: 3px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 12px 24px;
  min-width: 80px;
  text-align: center;
  box-shadow: 0 3px 0 var(--shadow);
}

.compare-sign {
  font-size: 2rem;
  color: var(--primary);
}

.compare-options {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.compare-btn {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  padding: 12px 28px;
  border: 3px solid var(--border-color);
  border-radius: var(--radius-md);
  background: var(--white);
  cursor: pointer;
  transition: all 0.2s;
  box-shadow: 0 3px 0 var(--shadow);
}

.compare-btn:hover {
  transform: translateY(-2px);
  border-color: var(--primary);
}

/* === Money Display === */
.money-display {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
  margin: 1rem 0;
}

.coin-visual {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 700;
  border: 3px solid;
  box-shadow: 0 3px 6px var(--shadow);
}

.coin-5 {
  background: #FFD700;
  border-color: #DAA520;
  color: #8B6914;
}

.coin-10 {
  background: #FFD700;
  border-color: #DAA520;
  color: #8B6914;
}

.coin-20 {
  background: #FFD700;
  border-color: #DAA520;
  color: #8B6914;
}

.coin-50 {
  background: #FFD700;
  border-color: #DAA520;
  color: #8B6914;
}

/* === Responsive === */
@media (max-width: 600px) {
  .game-title {
    font-size: 2.5rem;
  }

  .game-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 0.8rem;
  }

  .game-card {
    padding: 1rem;
  }

  .game-card-icon {
    font-size: 2.2rem;
  }

  .game-card-title {
    font-size: 1.1rem;
  }

  .question-text {
    font-size: 1.5rem;
  }

  .answer-options {
    grid-template-columns: repeat(2, 1fr);
    gap: 0.8rem;
  }

  .answer-btn {
    font-size: 1.3rem;
    padding: 12px 16px;
  }

  .game-header {
    padding: 8px 12px;
  }

  .header-center {
    gap: 8px;
  }

  .results-stats {
    gap: 1rem;
  }

  .compare-display {
    font-size: 2rem;
  }
}

@media (min-width: 601px) and (max-width: 1024px) {
  .game-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 1025px) {
  .game-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* === Scrollbar styling === */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-warm);
}

::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
  background: #C4B896;
}

/* === Utility === */
.hidden { display: none !important; }

/* === Character Selection Screen === */
.character-container {
  max-width: 700px;
  margin: 0 auto;
  padding: 2rem;
  text-align: center;
}

.character-title {
  font-family: 'Fredoka', sans-serif;
  font-size: 2rem;
  color: var(--primary);
  margin-bottom: 0.5rem;
}

.character-subtitle {
  font-size: 1.2rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
}

.character-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  margin-bottom: 2rem;
}

@media (max-width: 600px) {
  .character-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.character-card {
  background: var(--bg-white);
  border: 3px solid var(--border-color);
  border-radius: 20px;
  padding: 1rem;
  cursor: pointer;
  transition: all 0.3s ease;
  text-align: center;
}

.character-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
}

.character-card.selected {
  border-color: var(--primary);
  background: var(--primary-light);
  transform: scale(1.05);
  box-shadow: 0 8px 25px rgba(255, 159, 67, 0.3);
}

.character-emoji {
  font-size: 3rem;
  margin-bottom: 0.5rem;
  line-height: 1;
}

.character-name {
  font-family: 'Fredoka', sans-serif;
  font-size: 1.1rem;
  color: var(--text-color);
  margin-bottom: 0.25rem;
}

.character-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.character-name-section {
  margin-bottom: 1.5rem;
}

.character-name-section .input-label {
  display: block;
  font-family: 'Fredoka', sans-serif;
  font-size: 1.2rem;
  color: var(--text-color);
  margin-bottom: 0.5rem;
}

.character-name-section .hand-drawn-input {
  max-width: 300px;
  margin: 0 auto;
  display: block;
  text-align: center;
}

/* === Header Buttons === */
.header-right {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

.btn-child {
  background: var(--secondary);
  color: white;
  border: 2px solid var(--border-color);
  border-radius: 12px;
  font-size: 1.2rem;
  padding: 0.4rem 0.6rem;
  cursor: pointer;
  transition: all 0.3s ease;
}

.btn-child:hover {
  transform: scale(1.1);
  box-shadow: 0 4px 12px rgba(84, 160, 255, 0.3);
}

.btn-parent {
  background: var(--accent-pink);
  color: white;
  border: 2px solid var(--border-color);
  border-radius: 12px;
  font-size: 1.2rem;
  padding: 0.4rem 0.6rem;
  cursor: pointer;
  transition: all 0.3s ease;
}

.btn-parent:hover {
  transform: scale(1.1);
  box-shadow: 0 4px 12px rgba(255, 107, 129, 0.3);
}

/* === Player Character Display === */
.player-character {
  font-size: 1.5rem;
  margin-left: 0.5rem;
  display: none;
}
.text-center { text-align: center; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }

/* === Difficulty Buttons === */
.difficulty-btns {
  display: flex;
  gap: 8px;
}

.diff-btn {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  padding: 8px 20px;
  border: 3px solid var(--border-color);
  border-radius: var(--radius-lg);
  background: var(--white);
  color: var(--text-dark);
  cursor: pointer;
  transition: all 0.2s;
  box-shadow: 0 2px 0 var(--shadow);
}

.diff-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 3px 0 var(--shadow);
}

.diff-btn.active[data-diff="easy"] {
  background: var(--green);
  color: var(--white);
  border-color: var(--green-dark);
  box-shadow: 0 2px 0 var(--green-dark);
}

.diff-btn.active[data-diff="medium"] {
  background: var(--primary);
  color: var(--white);
  border-color: var(--primary-dark);
  box-shadow: 0 2px 0 var(--primary-dark);
}

.diff-btn.active[data-diff="hard"] {
  background: var(--pink);
  color: var(--white);
  border-color: #E65A6E;
  box-shadow: 0 2px 0 #E65A6E;
}

/* === Toggle Switch === */
.toggle-switch {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  user-select: none;
}

.toggle-switch input {
  display: none;
}

.toggle-slider {
  width: 48px;
  height: 26px;
  background: #D5CBB5;
  border-radius: 20px;
  position: relative;
  transition: background 0.3s;
  border: 2px solid var(--border-color);
}

.toggle-slider::after {
  content: '';
  position: absolute;
  top: 2px;
  left: 2px;
  width: 18px;
  height: 18px;
  background: var(--white);
  border-radius: 50%;
  transition: transform 0.3s;
  box-shadow: 0 1px 3px rgba(0,0,0,0.2);
}

.toggle-switch input:checked + .toggle-slider {
  background: var(--green);
  border-color: var(--green-dark);
}

.toggle-switch input:checked + .toggle-slider::after {
  transform: translateX(22px);
}

.toggle-label {
  font-family: var(--font-display);
  font-size: 0.95rem;
  color: var(--text-light);
  min-width: 20px;
}

/* === Parent Exit Button === */
.parent-exit-section {
  display: flex;
  justify-content: center;
  padding: 1.5rem 0 0.5rem;
  border-top: 2px dashed var(--border-color);
  margin-top: 1.5rem;
}

.btn-exit {
  background: var(--white);
  color: var(--text-dark);
  border: 3px solid var(--border-color);
  border-radius: var(--radius-xl);
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  padding: 10px 28px;
  cursor: pointer;
  box-shadow: 0 3px 0 var(--border-color);
  transition: all 0.2s;
}

.btn-exit:hover {
  background: #FFF0F0;
  border-color: var(--wrong);
  color: var(--wrong);
  transform: translateY(-1px);
  box-shadow: 0 4px 0 var(--wrong);
}

/* === Centered Form Row === */
.form-row-center {
  justify-content: center;
  margin-top: 0.5rem;
}

.form-row-center .btn {
  display: block;
  margin: 0 auto;
}

/* === Gender Buttons === */
.gender-section {
  margin-bottom: 1.5rem;
}

.gender-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  margin-top: 0.5rem;
}

.gender-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.3rem;
  padding: 1rem 1.5rem;
  background: var(--bg-white);
  border: 3px solid var(--border-color);
  border-radius: 16px;
  cursor: pointer;
  transition: all 0.3s ease;
  font-family: var(--font-body);
}

.gender-btn:hover {
  transform: scale(1.05);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.gender-btn.selected {
  border-color: var(--primary);
  background: linear-gradient(135deg, #FFF8E7, #FFE8D6);
  box-shadow: 0 4px 12px rgba(255, 159, 67, 0.3);
}

.gender-icon {
  font-size: 2.5rem;
}

.gender-text {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-dark);
}

/* === Upload Area === */
.upload-area {
  border: 3px dashed var(--primary);
  border-radius: 20px;
  padding: 2rem;
  text-align: center;
  background: linear-gradient(135deg, #FFF8E7, #FFE8D6);
  cursor: pointer;
  transition: all 0.3s ease;
  margin: 1rem 0;
}

.upload-area:hover {
  border-color: var(--secondary-blue);
  background: linear-gradient(135deg, #E8F4FF, #D6E8FF);
  transform: scale(1.02);
}

.upload-area.dragover {
  border-color: var(--secondary-green);
  background: linear-gradient(135deg, #E8FFE8, #D6FFD6);
}

.upload-icon {
  font-size: 3rem;
  margin-bottom: 0.5rem;
}

.upload-text {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-dark);
  margin: 0.5rem 0;
}

.upload-hint {
  font-size: 0.9rem;
  color: var(--text-light);
  margin: 0;
}

/* === Upload Status === */
.upload-status {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 1rem;
  background: var(--bg-white);
  border-radius: 12px;
  margin: 1rem 0;
  border: 2px solid var(--primary);
}

.upload-status.processing {
  border-color: var(--secondary-blue);
  animation: pulse 1.5s infinite;
}

.upload-status.success {
  border-color: var(--secondary-green);
}

.upload-status.error {
  border-color: var(--error-red);
}

.status-icon {
  font-size: 1.5rem;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}

/* === Document List === */
.document-list-section,
.document-selection-section {
  margin-top: 1.5rem;
}

.document-list-section h4,
.document-selection-section h4 {
  font-size: 1.1rem;
  color: var(--text-dark);
  margin-bottom: 0.5rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px dashed var(--primary);
}

.document-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.document-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem;
  background: var(--bg-white);
  border-radius: 12px;
  border: 2px solid var(--border-color);
  transition: all 0.2s ease;
}

.document-item:hover {
  border-color: var(--primary);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.document-info {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex: 1;
}

.document-icon {
  font-size: 1.5rem;
}

.document-details {
  display: flex;
  flex-direction: column;
}

.document-name {
  font-weight: 600;
  color: var(--text-dark);
  font-size: 1rem;
}

.document-meta {
  font-size: 0.8rem;
  color: var(--text-light);
}

.document-actions {
  display: flex;
  gap: 0.5rem;
}

.btn-doc {
  padding: 0.4rem 0.8rem;
  font-size: 0.9rem;
  border-radius: 10px;
  border: 2px solid;
  cursor: pointer;
  transition: all 0.2s ease;
  font-family: inherit;
}

.btn-doc-view {
  background: var(--secondary-blue);
  border-color: var(--secondary-blue);
  color: white;
}

.btn-doc-view:hover {
  background: #3d8be0;
  transform: scale(1.05);
}

.btn-doc-edit {
  background: var(--primary);
  border-color: var(--primary);
  color: white;
}

.btn-doc-edit:hover {
  background: #e08a35;
  transform: scale(1.05);
}

.btn-doc-delete {
  background: var(--error-red);
  border-color: var(--error-red);
  color: white;
}

.btn-doc-delete:hover {
  background: #e05555;
  transform: scale(1.05);
}

/* === Quiz Document Selection === */
.quiz-document-selection {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.quiz-doc-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  background: var(--bg-white);
  border-radius: 12px;
  border: 2px solid var(--border-color);
  cursor: pointer;
  transition: all 0.2s ease;
}

.quiz-doc-item:hover {
  border-color: var(--primary);
}

.quiz-doc-item.selected {
  border-color: var(--secondary-green);
  background: linear-gradient(135deg, #E8FFE8, #D6FFD6);
}

.quiz-doc-checkbox {
  width: 20px;
  height: 20px;
  border: 2px solid var(--border-color);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
}

.quiz-doc-item.selected .quiz-doc-checkbox {
  background: var(--secondary-green);
  border-color: var(--secondary-green);
  color: white;
}

.quiz-doc-name {
  flex: 1;
  font-weight: 500;
}

.quiz-doc-count {
  font-size: 0.85rem;
  color: var(--text-light);
  background: var(--bg-cream);
  padding: 0.2rem 0.6rem;
  border-radius: 10px;
}

.empty-hint {
  text-align: center;
  color: var(--text-light);
  font-style: italic;
  padding: 1rem;
}