/* ==========================================================================
   IdiomPop! - Simple & Pop CSS Design System
   ========================================================================== */

/* Variables & Theme */
:root {
  --bg-primary: #FFFDF6;      /* Warm cream background */
  --text-main: #2D3748;       /* Soft dark slate */
  --text-muted: #718096;      /* Neutral gray */
  --border-color: #2D3748;    /* Dark charcoal borders for pop outline */
  
  /* Accent Colors */
  --color-blue: #60A5FA;      /* Playful sky blue */
  --color-blue-dark: #2563EB;
  --color-green: #34D399;     /* Fresh mint green */
  --color-green-dark: #059669;
  --color-green-light: #E6F9F0;
  --color-red: #F87171;       /* Cute coral red */
  --color-red-dark: #DC2626;
  --color-red-light: #FEE2E2;
  --color-yellow: #FBBF24;    /* Sunny yellow */
  --color-purple: #A78BFA;    /* Pastel lavender */
  
  /* Cards & Shadows */
  --card-bg: #FFFFFF;
  --radius-lg: 20px;
  --radius-md: 14px;
  --shadow-pop: 5px 5px 0px 0px #2D3748;
  --shadow-pop-sm: 3px 3px 0px 0px #2D3748;
  --shadow-pop-active: 1px 1px 0px 0px #2D3748;
  
  /* Transition settings */
  --transition-pop: all 0.15s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

/* Base Styles */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background-color: transparent; /* Transparent to flow with WordPress background */
  color: var(--text-main);
  margin: 0;
  padding: 0;
  overflow-x: hidden;
}

/* App Container - Borderless and full width for seamless embedding */
.app-container {
  width: 100%;
  max-width: 100%;
  min-height: auto; /* Changed to auto so the height adjusts dynamically to content */
  background-color: transparent;
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 16px;
}

/* Screens Layout */
.screen {
  display: none;
  flex-direction: column;
  flex-grow: 1;
  animation: fadeIn 0.3s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.screen.active {
  display: flex;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: scale(0.98);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* Cards (Neobrutalism Pop Style) */
.card {
  background-color: var(--card-bg);
  border: 3px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-pop);
  padding: 20px;
  margin-bottom: 24px;
  position: relative;
  transition: var(--transition-pop);
}

/* Custom Interactive / Pop Buttons */
.btn {
  font-family: 'Outfit', sans-serif;
  font-weight: 700;
  font-size: 1.1rem;
  padding: 14px 28px;
  border: 3px solid var(--border-color);
  border-radius: var(--radius-md);
  cursor: pointer;
  display: inline-flex;
  justify-content: center;
  align-items: center;
  text-decoration: none;
  transition: var(--transition-pop);
  outline: none;
  user-select: none;
}

.btn-primary {
  background-color: var(--color-yellow);
  color: var(--text-main);
  box-shadow: var(--shadow-pop);
}

.btn-primary:hover {
  background-color: #FCD34D; /* Lightened yellow */
  transform: translate(-2px, -2px);
  box-shadow: 7px 7px 0px 0px var(--border-color);
}

.btn-primary:active {
  transform: translate(3px, 3px);
  box-shadow: var(--shadow-pop-active);
}

.btn-secondary {
  background-color: var(--card-bg);
  color: var(--text-main);
  box-shadow: var(--shadow-pop);
}

.btn-secondary:hover {
  background-color: #F7FAFC;
  transform: translate(-2px, -2px);
  box-shadow: 7px 7px 0px 0px var(--border-color);
}

.btn-secondary:active {
  transform: translate(3px, 3px);
  box-shadow: var(--shadow-pop-active);
}

.btn-lg {
  font-size: 1.25rem;
  padding: 16px 36px;
  width: 100%;
}

.btn-full-width {
  width: 100%;
}

/* Icon button styles */
.btn-icon {
  background: white;
  border: 2px solid var(--border-color);
  border-radius: 50%;
  width: 42px;
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: var(--shadow-pop-sm);
  transition: var(--transition-pop);
  color: var(--text-main);
}

.btn-icon:hover {
  transform: translate(-1px, -1px);
  box-shadow: 4px 4px 0px 0px var(--border-color);
}

.btn-icon:active {
  transform: translate(1.5px, 1.5px);
  box-shadow: var(--shadow-pop-active);
}

/* Sound Button (Global Placement) */
.sound-toggle-btn {
  position: absolute;
  top: 24px;
  right: 24px;
  z-index: 100;
  background: #FFFFFF;
  border: 2px solid var(--border-color);
  border-radius: 50%;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: var(--shadow-pop-sm);
  transition: var(--transition-pop);
  color: var(--text-main);
}

.sound-toggle-btn:hover {
  transform: scale(1.1) rotate(5deg);
}

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

.hidden {
  display: none !important;
}

/* ==========================================================================
   1. START SCREEN
   ========================================================================== */
#screen-start {
  justify-content: space-between;
  padding-top: 40px;
}

.hero-section {
  text-align: center;
  margin-bottom: 24px;
}

.logo-animation {
  width: 100px;
  height: 100px;
  background-color: var(--color-purple);
  border: 3px solid var(--border-color);
  border-radius: 30px;
  display: flex;
  justify-content: center;
  align-items: center;
  margin: 0 auto 20px auto;
  box-shadow: var(--shadow-pop);
  transform: rotate(-6deg);
  animation: wobble 4s ease-in-out infinite alternate;
}

.logo-emoji {
  font-size: 3.5rem;
}

@keyframes wobble {
  0% { transform: rotate(-6deg) translateY(0); }
  100% { transform: rotate(6deg) translateY(-8px); }
}

.app-title {
  font-family: 'Outfit', sans-serif;
  font-weight: 800;
  font-size: 3.2rem;
  color: var(--text-main);
  text-shadow: 4px 4px 0px #A78BFA;
  margin-bottom: 12px;
  letter-spacing: -1px;
}

.app-subtitle {
  font-size: 1rem;
  color: var(--text-muted);
  font-weight: 600;
  max-width: 320px;
  margin: 0 auto;
  line-height: 1.4;
}

/* Streak Card & Instructions */
.streak-card {
  text-align: center;
  background-color: #FFFDF0;
}

.streak-header {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  margin-bottom: 10px;
}

.streak-header h3 {
  font-family: 'Outfit', sans-serif;
  font-size: 1.15rem;
  color: var(--text-main);
}

.flame-icon {
  animation: firePulse 1.2s ease-in-out infinite alternate;
}

@keyframes firePulse {
  0% { transform: scale(1) rotate(-3deg); filter: drop-shadow(0 0 1px rgba(245,158,11,0.2)); }
  100% { transform: scale(1.15) rotate(3deg); filter: drop-shadow(0 0 8px rgba(245,158,11,0.6)); }
}

.streak-days {
  font-family: 'Outfit', sans-serif;
  font-weight: 800;
  font-size: 2.2rem;
  color: #D97706; /* Warm amber */
}

.streak-hint {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 6px;
}

.instruction-card h3 {
  font-family: 'Outfit', sans-serif;
  font-size: 1.2rem;
  margin-bottom: 12px;
  color: var(--text-main);
}

.instruction-card p {
  font-size: 0.95rem;
  line-height: 1.5;
  color: var(--text-main);
}

.instruction-card span {
  background-color: #EDF2F7;
  padding: 2px 8px;
  border-radius: 6px;
  font-family: monospace;
  font-weight: bold;
}

.score-record {
  margin-top: 16px;
  padding-top: 12px;
  border-top: 2px dashed #E2E8F0;
  font-weight: bold;
  font-size: 0.95rem;
  color: var(--color-blue-dark);
}

.pulse-animation {
  animation: pulseButton 2s infinite;
}

@keyframes pulseButton {
  0% { transform: scale(1); }
  50% { transform: scale(1.03); }
  100% { transform: scale(1); }
}

/* ==========================================================================
   2. QUIZ PLAY SCREEN
   ========================================================================== */
#screen-quiz {
  justify-content: flex-start;
  padding-top: 12px;
}

.quiz-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 24px;
}

.progress-container {
  flex-grow: 1;
}

.progress-label {
  font-family: 'Outfit', sans-serif;
  font-weight: 700;
  font-size: 0.95rem;
  margin-bottom: 6px;
  color: var(--text-muted);
}

.progress-bar-track {
  width: 100%;
  height: 16px;
  background-color: #EDF2F7;
  border: 2px solid var(--border-color);
  border-radius: 10px;
  overflow: hidden;
  box-shadow: inset 0 2px 4px rgba(0,0,0,0.06);
}

.progress-bar-fill {
  height: 100%;
  background-color: var(--color-blue);
  border-right: 2px solid var(--border-color);
  border-radius: 8px 0 0 8px;
  width: 0%;
  transition: width 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.15);
}

/* Question Card */
.question-card {
  text-align: center;
  background-color: #FFFFFF;
  border-color: var(--border-color);
  margin-bottom: 24px;
}

.question-title {
  font-family: 'Outfit', sans-serif;
  font-size: 0.9rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--color-purple);
  margin-bottom: 12px;
}

.question-text {
  font-family: 'Outfit', sans-serif;
  font-size: 1.8rem;
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 20px;
  word-break: break-word;
}

.blank-indicator {
  display: inline-block;
  min-width: 130px;
  border-bottom: 4px dashed var(--color-blue);
  color: var(--color-blue);
  padding: 0 8px;
  text-align: center;
}

.meaning-hint-box {
  background-color: #F7FAFC;
  border: 2px solid #E2E8F0;
  border-radius: 12px;
  padding: 10px 14px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  max-width: 100%;
}

.hint-badge {
  background-color: var(--color-purple);
  color: white;
  font-size: 0.75rem;
  font-weight: bold;
  padding: 3px 8px;
  border-radius: 6px;
  border: 1px solid var(--border-color);
}

.hint-text {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-main);
  text-align: left;
}

/* Input container & field */
.input-container {
  margin-bottom: 24px;
}

.input-wrapper {
  display: flex;
  gap: 12px;
}

#answer-input {
  flex-grow: 1;
  background-color: #FFFFFF;
  border: 3px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-pop-sm);
  padding: 16px 20px;
  font-family: 'Outfit', sans-serif;
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--text-main);
  outline: none;
  transition: var(--transition-pop);
}

#answer-input:focus {
  border-color: var(--color-blue);
  transform: translate(-1px, -1px);
  box-shadow: 4px 4px 0px 0px var(--border-color);
}

#answer-input.correct {
  background-color: var(--color-green-light) !important;
  border-color: var(--color-green-dark) !important;
  color: var(--color-green-dark) !important;
  box-shadow: 3px 3px 0px 0px var(--color-green-dark) !important;
  animation: bounceCorrect 0.4s ease-out;
}

#answer-input.incorrect {
  background-color: var(--color-red-light) !important;
  border-color: var(--color-red-dark) !important;
  color: var(--color-red-dark) !important;
  box-shadow: 3px 3px 0px 0px var(--color-red-dark) !important;
  animation: shake 0.4s ease-in-out;
}

#answer-input:disabled {
  pointer-events: none;
}

#btn-submit-answer {
  padding: 16px 24px;
}

/* Hint elements */
.quiz-utility-row {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-top: 14px;
}

.btn-hint-style {
  font-size: 0.95rem;
  padding: 10px 18px;
  border-width: 2.5px;
  background-color: #FFFFFF;
  box-shadow: var(--shadow-pop-sm);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  color: var(--text-main);
}

.btn-hint-style:hover {
  background-color: #FEF3C7; /* warm amber tint */
  border-color: #F59E0B;
  box-shadow: 3px 3px 0px 0px #F59E0B;
  transform: translate(-1px, -1px);
}

.btn-hint-style:active {
  transform: translate(1.5px, 1.5px);
  box-shadow: var(--shadow-pop-active);
}

.btn-hint-style:disabled {
  opacity: 0.5;
  pointer-events: none;
  box-shadow: none;
  transform: none;
}

.hint-display {
  background-color: #FFFBEB;
  border: 2px solid #FBBF24;
  color: #D97706;
  font-family: 'Outfit', sans-serif;
  font-weight: 700;
  font-size: 1rem;
  padding: 10px 16px;
  border-radius: 12px;
  box-shadow: 2px 2px 0px 0px #FBBF24;
  animation: slideInLeft 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.15) forwards;
}

@keyframes slideInLeft {
  from { opacity: 0; transform: translateX(-15px); }
  to { opacity: 1; transform: translateX(0); }
}

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

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

/* Explanation Pop Drawer */
.explanation-drawer {
  margin-top: 10px;
  animation: slideUp 0.35s cubic-bezier(0.175, 0.885, 0.32, 1.1) forwards;
}

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

.feedback-banner {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 18px;
  border-radius: var(--radius-md);
  border: 3px solid var(--border-color);
  margin-bottom: 20px;
  box-shadow: var(--shadow-pop-sm);
  background-color: #FFFFFF;
}

.feedback-banner.correct-banner {
  background-color: var(--color-green-light);
  border-color: var(--color-green-dark);
  box-shadow: 3px 3px 0px 0px var(--color-green-dark);
}

.feedback-banner.incorrect-banner {
  background-color: var(--color-red-light);
  border-color: var(--color-red-dark);
  box-shadow: 3px 3px 0px 0px var(--color-red-dark);
}

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

.feedback-title {
  font-family: 'Outfit', sans-serif;
  font-weight: 800;
  font-size: 1.2rem;
}

.correct-banner .feedback-title {
  color: var(--color-green-dark);
}

.incorrect-banner .feedback-title {
  color: var(--color-red-dark);
}

/* Explanation Card */
.explanation-card {
  background-color: #FFFFFF;
  margin-bottom: 20px;
}

.completed-idiom {
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 2px dashed #E2E8F0;
}

.completed-idiom .label {
  font-size: 0.75rem;
  font-weight: bold;
  text-transform: uppercase;
  color: var(--text-muted);
  display: block;
  margin-bottom: 4px;
}

.completed-idiom h2 {
  font-family: 'Outfit', sans-serif;
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--color-blue-dark);
}

.explanation-row {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.explanation-block h4 {
  font-family: 'Outfit', sans-serif;
  font-size: 0.95rem;
  margin-bottom: 6px;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 6px;
}

.explanation-block p {
  font-size: 0.9rem;
  line-height: 1.5;
  color: var(--text-main);
}

/* ==========================================================================
   3. RESULT SCREEN
   ========================================================================== */
#screen-result {
  justify-content: flex-start;
}

.result-header {
  text-align: center;
  margin-bottom: 24px;
}

.result-title {
  font-family: 'Outfit', sans-serif;
  font-weight: 800;
  font-size: 2.2rem;
  text-shadow: 2px 2px 0px var(--color-purple);
}

.result-badge-card {
  text-align: center;
  background-color: #FFFDF0;
  padding: 30px 20px;
}

.result-emoji {
  font-size: 4rem;
  margin-bottom: 16px;
  animation: floatEmoji 3s ease-in-out infinite alternate;
}

@keyframes floatEmoji {
  0% { transform: translateY(0) rotate(-3deg); }
  100% { transform: translateY(-8px) rotate(3deg); }
}

.result-badge-card h2 {
  font-family: 'Outfit', sans-serif;
  font-size: 1.5rem;
  margin-bottom: 8px;
}

.result-badge-card p {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-muted);
}

.result-badge-card span {
  font-family: 'Outfit', sans-serif;
  font-weight: 800;
  font-size: 1.6rem;
  color: var(--color-blue-dark);
}

.high-score-badge {
  display: inline-block;
  margin-top: 16px;
  background-color: var(--color-yellow);
  border: 2px solid var(--border-color);
  padding: 6px 16px;
  border-radius: 30px;
  font-weight: bold;
  box-shadow: var(--shadow-pop-sm);
  animation: flashScore 0.8s ease-in-out infinite alternate;
}

@keyframes flashScore {
  from { transform: scale(1) rotate(-1deg); }
  to { transform: scale(1.06) rotate(1deg); }
}

/* Review List Section */
.review-section {
  margin-bottom: 24px;
}

.review-section h3 {
  font-family: 'Outfit', sans-serif;
  font-size: 1.25rem;
  margin-bottom: 4px;
}

.review-hint {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.review-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

/* Individual Review Card */
.review-item {
  background-color: white;
  border: 2px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: 3px 3px 0px 0px var(--border-color);
  transition: var(--transition-pop);
}

.review-item-header {
  padding: 14px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  user-select: none;
  background: white;
  transition: background-color 0.2s ease;
}

.review-item-header:hover {
  background-color: #F7FAFC;
}

.review-header-left {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-grow: 1;
}

.review-status-indicator {
  font-size: 1.1rem;
}

.review-idiom-text {
  font-family: 'Outfit', sans-serif;
  font-weight: 700;
  font-size: 1rem;
  color: var(--text-main);
  word-break: break-word;
}

.review-arrow {
  transition: transform 0.2s ease;
  color: var(--text-muted);
}

.review-item.open .review-arrow {
  transform: rotate(180deg);
}

/* Expandable Details Area */
.review-item-details {
  display: none;
  padding: 16px;
  background-color: #F8FAFC;
  border-top: 2px dashed #E2E8F0;
  animation: slideDownFade 0.25s ease-out forwards;
}

.review-item.open .review-item-details {
  display: block;
}

@keyframes slideDownFade {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}

.review-detail-block {
  margin-bottom: 12px;
}

.review-detail-block:last-child {
  margin-bottom: 0;
}

.review-detail-block h5 {
  font-family: 'Outfit', sans-serif;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 2px;
}

.review-detail-block p {
  font-size: 0.9rem;
  line-height: 1.4;
  color: var(--text-main);
}

.result-actions {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

/* Review Item States */
.review-item.correct-item {
  border-color: var(--color-green-dark);
  box-shadow: 3px 3px 0px 0px var(--color-green-dark);
}

.review-item.incorrect-item {
  border-color: var(--color-red-dark);
  box-shadow: 3px 3px 0px 0px var(--color-red-dark);
}