/* ==========================================================================
   Dunia Main & Belajar Balita - Design System & Stylesheet
   ========================================================================== */

:root {
  --font-primary: 'Fredoka', 'Quicksand', -apple-system, sans-serif;
  --bg-gradient: linear-gradient(135deg, #e0f7fa 0%, #fff9c4 50%, #ffe0b2 100%);
  --color-card-bg: #ffffff;
  --color-text-main: #37474f;
  --color-text-muted: #607d8b;
  
  /* Primary Palette */
  --color-red: #ff5252;
  --color-green: #4caf50;
  --color-blue: #29b6f6;
  --color-yellow: #ffca28;
  --color-purple: #ab47bc;
  --color-orange: #ff9800;
  --color-pink: #ff4081;

  --shadow-soft: 0 10px 25px rgba(0, 0, 0, 0.08);
  --shadow-button-red: 0 6px 0 #d32f2f;
  --shadow-button-blue: 0 6px 0 #0288d1;
  --shadow-button-green: 0 6px 0 #388e3c;
  --shadow-button-yellow: 0 6px 0 #f57f17;
  
  --radius-xl: 32px;
  --radius-lg: 24px;
  --radius-md: 16px;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  user-select: none;
  -webkit-user-select: none;
  -webkit-touch-callout: none;
  -webkit-tap-highlight-color: transparent;
}

body {
  font-family: var(--font-primary);
  background: var(--bg-gradient);
  color: var(--color-text-main);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  position: relative;
}

/* Background Ambient Elements */
.bg-decorations {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.floating-cloud {
  position: absolute;
  background: rgba(255, 255, 255, 0.65);
  border-radius: 50px;
  animation: floatCloud 25s linear infinite;
}

@keyframes floatCloud {
  0% { transform: translateX(-150px); }
  100% { transform: translateX(110vw); }
}

/* App Header */
.app-header {
  position: relative;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 4px solid #b2ebf2;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
}

.logo-area {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo-icon {
  font-size: 2.2rem;
  animation: bounce 2s infinite ease-in-out;
}

.logo-title {
  font-size: 1.7rem;
  font-weight: 700;
  color: #00838f;
  letter-spacing: 0.5px;
  line-height: 1.1;
}

.father-license-tag {
  font-size: 0.85rem;
  font-weight: 700;
  color: #e91e63;
  background: #fce4ec;
  padding: 3px 10px;
  border-radius: 12px;
  margin-top: 4px;
  display: inline-block;
  border: 1px solid #f8bbd0;
}

/* App Footer */
.app-footer {
  text-align: center;
  padding: 16px 24px;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(10px);
  border-top: 3px solid #b2ebf2;
  font-size: 1rem;
  font-weight: 700;
  color: #00838f;
  margin-top: auto;
  position: relative;
  z-index: 10;
}

.real-photo-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--radius-md);
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.15);
  border: 3px solid #ffffff;
  transition: transform 0.25s ease;
}

.machinery-card:hover .real-photo-img, .vehicle-card:hover .real-photo-img {
  transform: scale(1.05);
}

/* Navigation Tabs */
.level-nav {
  display: flex;
  gap: 12px;
}

.nav-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: var(--radius-lg);
  border: 3px solid transparent;
  background: #ffffff;
  font-family: var(--font-primary);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-text-muted);
  cursor: pointer;
  box-shadow: 0 4px 0 #cfd8dc;
  transition: all 0.2s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.nav-btn .nav-icon {
  font-size: 1.3rem;
}

.nav-btn:hover {
  transform: translateY(-2px);
}

.nav-btn:active {
  transform: translateY(2px);
  box-shadow: 0 2px 0 #cfd8dc;
}

.nav-btn.active {
  background: #e0f2f1;
  color: #00695c;
  border-color: #4db6ac;
  box-shadow: 0 4px 0 #004d40;
}

.audio-toggle-btn {
  width: 54px;
  height: 54px;
  border-radius: 50%;
  border: none;
  background: #ffecb3;
  font-size: 1.6rem;
  cursor: pointer;
  box-shadow: 0 5px 0 #ffa000;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.1s;
}

.audio-toggle-btn:active {
  transform: translateY(3px);
  box-shadow: 0 2px 0 #ffa000;
}

/* Main Container */
.game-container {
  position: relative;
  z-index: 5;
  flex: 1;
  max-width: 1000px;
  width: 100%;
  margin: 0 auto;
  padding: 24px;
  display: flex;
  flex-direction: column;
}

.level-section {
  display: none;
  flex-direction: column;
  align-items: center;
  gap: 24px;
  width: 100%;
  animation: fadeIn 0.4s ease-out;
}

.level-section.active {
  display: flex;
}

.level-header {
  text-align: center;
}

.level-header h2 {
  font-size: 2.2rem;
  color: #00796b;
  margin-bottom: 6px;
  text-shadow: 1px 1px 0 #ffffff;
}

.subtitle-hint {
  font-size: 1.2rem;
  color: var(--color-text-muted);
  font-weight: 600;
}

/* ==========================================================================
   LEVEL 1: SORTING SHAPES
   ========================================================================== */
.sorting-game-area {
  display: flex;
  flex-direction: column;
  gap: 36px;
  width: 100%;
  align-items: center;
  margin-top: 10px;
}

.slots-container, .shapes-container {
  display: flex;
  justify-content: center;
  gap: 24px;
  flex-wrap: wrap;
  width: 100%;
}

/* Slot Target Box */
.shape-slot {
  width: 130px;
  height: 130px;
  background: rgba(255, 255, 255, 0.7);
  border: 4px dashed #90a4ae;
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
  transition: all 0.3s ease;
  box-shadow: inset 0 4px 8px rgba(0,0,0,0.05);
}

.shape-slot.drag-over {
  background: #e1f5fe;
  border-color: #0288d1;
  transform: scale(1.08);
}

.shape-slot.selected-target {
  background: #fff9c4;
  border-color: #fbc02d;
  animation: pulseGlow 1s infinite alternate;
}

.shape-slot.filled {
  border-style: solid;
  border-color: #81c784;
  background: #e8f5e9;
  animation: popIn 0.4s ease;
}

.slot-label {
  position: absolute;
  bottom: -30px;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-text-main);
}

/* Draggable Shape Item */
.shape-item {
  width: 120px;
  height: 120px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: grab;
  touch-action: none;
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.12);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  position: relative;
}

.shape-item:hover {
  transform: scale(1.06) translateY(-4px);
}

.shape-item:active, .shape-item.dragging {
  cursor: grabbing;
  transform: scale(1.15);
  z-index: 100;
  box-shadow: 0 16px 30px rgba(0,0,0,0.25);
}

.shape-item.selected {
  outline: 6px solid #ffeb3b;
  outline-offset: 4px;
  animation: wiggle 0.6s ease infinite;
}

.shape-item.placed {
  pointer-events: none;
  opacity: 0.5;
  filter: grayscale(0.5);
}

/* SVG Shapes inside items */
.shape-svg {
  width: 80px;
  height: 80px;
  filter: drop-shadow(0 4px 4px rgba(0,0,0,0.15));
}

/* Action Footer */
.level-footer {
  margin-top: 20px;
}

.action-btn-secondary {
  padding: 12px 28px;
  font-family: var(--font-primary);
  font-size: 1.2rem;
  font-weight: 700;
  color: #00796b;
  background: #e0f2f1;
  border: 3px solid #80cbc4;
  border-radius: var(--radius-lg);
  cursor: pointer;
  box-shadow: 0 4px 0 #004d40;
  transition: all 0.15s ease;
}

.action-btn-secondary:active {
  transform: translateY(3px);
  box-shadow: 0 1px 0 #004d40;
}

/* ==========================================================================
   LEVEL 2: ANIMAL WORLD & SOUNDS
   ========================================================================== */
.animal-quiz-bar {
  display: flex;
  align-items: center;
  gap: 16px;
  background: #ffffff;
  padding: 12px 24px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
  border: 3px solid #ffcc80;
}

.quiz-question {
  font-size: 1.2rem;
  font-weight: 700;
  color: #e65100;
}

.quiz-play-sound-btn {
  padding: 8px 18px;
  font-family: var(--font-primary);
  font-size: 1rem;
  font-weight: 700;
  background: #ffe0b2;
  color: #e65100;
  border: 2px solid #ffb74d;
  border-radius: var(--radius-md);
  cursor: pointer;
  box-shadow: 0 3px 0 #f57c00;
  transition: transform 0.1s;
}

.quiz-play-sound-btn:active {
  transform: translateY(2px);
  box-shadow: 0 1px 0 #f57c00;
}

.animals-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 20px;
  width: 100%;
  max-width: 1200px;
  margin-top: 10px;
}

.animal-card {
  background: #ffffff;
  border-radius: var(--radius-xl);
  padding: 20px 16px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  cursor: pointer;
  box-shadow: var(--shadow-soft);
  border: 4px solid #e0e0e0;
  transition: all 0.25s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.animal-card:hover {
  transform: translateY(-8px) scale(1.03);
  border-color: #81d4fa;
  box-shadow: 0 15px 30px rgba(3, 169, 244, 0.2);
}

.animal-card:active, .animal-card.animating {
  transform: scale(1.1) rotate(3deg);
  animation: animalJump 0.6s ease;
}

.animal-avatar {
  width: 110px;
  height: 110px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.animal-avatar svg {
  width: 100%;
  height: 100%;
}

.animal-name {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--color-text-main);
}

.animal-sound-text {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-orange);
  background: #fff3e0;
  padding: 4px 12px;
  border-radius: 12px;
}

@keyframes animalJump {
  0% { transform: scale(1) translateY(0); }
  40% { transform: scale(1.15) translateY(-20px); }
  60% { transform: scale(0.95) translateY(0); }
  100% { transform: scale(1) translateY(0); }
}

/* ==========================================================================
   LEVEL 3: BUBBLE POP GAME
   ========================================================================== */
.bubble-game-canvas-wrapper {
  position: relative;
  width: 100%;
  height: 480px;
  background: linear-gradient(180deg, #e1f5fe 0%, #b3e5fc 100%);
  border-radius: var(--radius-xl);
  border: 5px solid #81d4fa;
  overflow: hidden;
  box-shadow: inset 0 8px 16px rgba(0,0,0,0.06), var(--shadow-soft);
}

.bubble-score-badge {
  position: absolute;
  top: 16px;
  right: 20px;
  background: rgba(255, 255, 255, 0.9);
  padding: 8px 20px;
  border-radius: var(--radius-lg);
  font-size: 1.3rem;
  font-weight: 700;
  color: #0277bd;
  box-shadow: 0 4px 10px rgba(0,0,0,0.1);
  z-index: 10;
}

.bubbles-stage {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.floating-bubble {
  position: absolute;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: inset -10px -10px 20px rgba(0,0,0,0.1), 0 8px 20px rgba(0,0,0,0.15);
  backdrop-filter: blur(2px);
  transition: transform 0.1s linear;
  will-change: transform;
}

.bubble-inner {
  font-size: 2.2rem;
  font-weight: 700;
  color: #ffffff;
  text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.bubble-shine {
  position: absolute;
  top: 15%;
  left: 20%;
  width: 25%;
  height: 25%;
  background: rgba(255, 255, 255, 0.6);
  border-radius: 50%;
}

/* Burst particle effect */
.bubble-particle {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
  animation: burstParticle 0.5s ease-out forwards;
}

@keyframes burstParticle {
  0% {
    opacity: 1;
    transform: translate(0, 0) scale(1);
  }
  100% {
    opacity: 0;
    transform: translate(var(--dx), var(--dy)) scale(0.2);
  }
}

/* ==========================================================================
   CELEBRATION OVERLAY & MODAL
   ========================================================================== */
.celebration-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(6px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  animation: fadeIn 0.3s ease;
}

.celebration-overlay.hidden {
  display: none;
}

.celebration-card {
  background: #ffffff;
  border-radius: var(--radius-xl);
  padding: 36px;
  max-width: 440px;
  width: 100%;
  text-align: center;
  box-shadow: 0 20px 50px rgba(0,0,0,0.25);
  border: 6px solid #ffd54f;
  animation: popIn 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.star-burst {
  font-size: 3rem;
  margin-bottom: 12px;
  animation: bounce 1s infinite alternate;
}

.celebration-card h2 {
  font-size: 2.2rem;
  color: #f57f17;
  margin-bottom: 12px;
}

.celebration-card p {
  font-size: 1.2rem;
  color: var(--color-text-muted);
  margin-bottom: 24px;
}

.action-btn-primary {
  padding: 14px 32px;
  font-family: var(--font-primary);
  font-size: 1.3rem;
  font-weight: 700;
  color: #ffffff;
  background: #4caf50;
  border: none;
  border-radius: var(--radius-lg);
  cursor: pointer;
  box-shadow: 0 6px 0 #2e7d32;
  transition: all 0.15s ease;
}

.action-btn-primary:active {
  transform: translateY(4px);
  box-shadow: 0 2px 0 #2e7d32;
}

/* ==========================================================================
   SUBMODE BARS & TAB TOGGLES
   ========================================================================== */
.submode-bar {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 8px;
  flex-wrap: wrap;
}

.submode-tab {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: 50px;
  background: #ffffff;
  border: 3px solid #cfd8dc;
  font-family: var(--font-primary);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-text-muted);
  cursor: pointer;
  box-shadow: 0 4px 0 #b0bec5;
  transition: all 0.2s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.submode-tab:hover {
  transform: translateY(-2px);
}

.submode-tab:active {
  transform: translateY(2px);
  box-shadow: 0 1px 0 #b0bec5;
}

.submode-tab.active {
  background: #fff8e1;
  color: #f57f17;
  border-color: #ffe082;
  box-shadow: 0 4px 0 #ffb300;
}

.hidden {
  display: none !important;
}

/* ==========================================================================
   LEVEL 4: HEAVY MACHINERY (ALAT BERAT)
   ========================================================================== */
.machinery-grid, .vehicles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 24px;
  width: 100%;
  max-width: 960px;
  margin-top: 10px;
}

.machinery-card, .vehicle-card {
  background: #ffffff;
  border-radius: var(--radius-xl);
  padding: 20px 16px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  position: relative;
  cursor: pointer;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.07);
  border: 4px solid #fff59d;
  transition: all 0.25s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.machinery-card {
  background: linear-gradient(180deg, #ffffff 0%, #fffde7 100%);
}

.machinery-card:hover, .vehicle-card:hover {
  transform: translateY(-8px) scale(1.03);
  box-shadow: 0 18px 35px rgba(255, 179, 0, 0.25);
  border-color: #fbc02d;
}

.machinery-card:active, .machinery-card.animating {
  animation: vroomEngine 0.4s ease-in-out;
}

.machinery-avatar, .vehicle-avatar {
  width: 130px;
  height: 120px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.machinery-avatar svg, .vehicle-avatar svg {
  width: 100%;
  height: 100%;
  filter: drop-shadow(0 6px 8px rgba(0,0,0,0.12));
}

.machinery-name, .vehicle-name {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--color-text-main);
  text-align: center;
}

.machinery-badge, .vehicle-badge {
  font-size: 0.95rem;
  font-weight: 600;
  color: #e65100;
  background: #ffe0b2;
  padding: 6px 14px;
  border-radius: 20px;
  text-align: center;
  line-height: 1.2;
}

/* Action Controls within Card */
.card-actions {
  display: flex;
  gap: 10px;
  margin-top: 4px;
  width: 100%;
  justify-content: center;
}

.action-chip {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: 16px;
  font-family: var(--font-primary);
  font-size: 0.9rem;
  font-weight: 700;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform 0.1s;
}

.action-chip:active {
  transform: scale(0.92);
}

.action-chip.horn {
  background: #e3f2fd;
  color: #1565c0;
  border-color: #90caf9;
}

.action-chip.siren {
  background: #ffebee;
  color: #c62828;
  border-color: #ef9a9a;
}

.action-chip.action {
  background: #e8f5e9;
  color: #2e7d32;
  border-color: #a5d6a7;
}

/* ==========================================================================
   LEVEL 5: TOY VEHICLES & SIRENS (MOBIL-MOBILAN)
   ========================================================================== */
.vehicle-card {
  background: linear-gradient(180deg, #ffffff 0%, #f1f8e9 100%);
  border-color: #c8e6c9;
}

.vehicle-card.siren-active {
  animation: sirenFlash 0.6s infinite alternate;
  border-color: #ff1744 !important;
}

/* Specific SVG Animations */
.animating .svg-excavator-arm {
  transform-origin: 25px 50px;
  animation: digMotion 1s infinite alternate ease-in-out;
}

.animating .svg-molen-drum {
  transform-origin: 50px 45px;
  animation: spinMolen 1.5s linear infinite;
}

.animating .svg-siren-light {
  animation: sirenPulse 0.4s infinite alternate;
}

.animating .svg-wheels circle {
  animation: wheelSpin 0.5s linear infinite;
}

/* Animation Keyframes */
@keyframes digMotion {
  0% { transform: rotate(0deg); }
  50% { transform: rotate(18deg) translateY(4px); }
  100% { transform: rotate(-10deg) translateY(-2px); }
}

@keyframes spinMolen {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

@keyframes sirenFlash {
  0% {
    box-shadow: 0 0 15px #ff1744, inset 0 0 15px rgba(255, 23, 68, 0.3);
    background: #ffebee;
  }
  100% {
    box-shadow: 0 0 25px #29b6f6, inset 0 0 15px rgba(41, 182, 246, 0.3);
    background: #e1f5fe;
  }
}

@keyframes sirenPulse {
  0% { opacity: 0.4; fill: #ff1744; }
  100% { opacity: 1; fill: #ffff00; filter: drop-shadow(0 0 8px #ffeb3b); }
}

@keyframes vroomEngine {
  0% { transform: translate(0, 0) scale(1); }
  25% { transform: translate(-3px, 2px) scale(1.04); }
  50% { transform: translate(3px, -2px) scale(1.04); }
  75% { transform: translate(-2px, -1px) scale(1.04); }
  100% { transform: translate(0, 0) scale(1); }
}

@keyframes wheelSpin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* Generic Animations */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes popIn {
  0% { transform: scale(0.6); opacity: 0; }
  100% { transform: scale(1); opacity: 1; }
}

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

@keyframes wiggle {
  0%, 100% { transform: rotate(0deg); }
  25% { transform: rotate(-5deg); }
  75% { transform: rotate(5deg); }
}

@keyframes pulseGlow {
  0% { box-shadow: 0 0 10px rgba(255, 193, 7, 0.4); }
  100% { box-shadow: 0 0 25px rgba(255, 193, 7, 0.9); }
}

/* Mobile Responsiveness */
@media (max-width: 768px) {
  .app-header {
    flex-direction: column;
    gap: 12px;
    padding: 12px 16px;
  }

  .logo-title {
    font-size: 1.5rem;
  }

  .level-nav {
    flex-wrap: wrap;
    justify-content: center;
    gap: 8px;
  }

  .nav-btn {
    padding: 8px 12px;
    font-size: 0.95rem;
  }

  .nav-btn .nav-text {
    display: inline; /* Keep text readable on mobile screen */
  }

  .nav-btn .nav-icon {
    font-size: 1.2rem;
  }

  .shape-slot, .shape-item {
    width: 105px;
    height: 105px;
  }

  .shape-svg {
    width: 65px;
    height: 65px;
  }

  .animals-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
  }

  .machinery-grid, .vehicles-grid {
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 14px;
  }

  .machinery-avatar, .vehicle-avatar {
    width: 100px;
    height: 90px;
  }

  .machinery-name, .vehicle-name {
    font-size: 1.15rem;
  }

  .bubble-game-canvas-wrapper {
    height: 400px;
  }
}