@import url('https://fonts.googleapis.com/css2?family=Fredoka:wght@300..700&display=swap');

:root {
  --primary-pink: #ff6b8b;
  --primary-pink-shadow: #e04a6b;
  --primary-blue: #4da3ff;
  --primary-blue-shadow: #2880e6;
  --primary-yellow: #ffd043;
  --primary-yellow-shadow: #deb01f;
  --primary-green: #5cd65c;
  --primary-green-shadow: #3cb83c;
  --primary-purple: #b388ff;
  --primary-purple-shadow: #8c5ee6;
  
  --bg-color: #f7f9fc;
  --text-dark: #2c3e50;
  --text-light: #ffffff;
  
  --btn-radius: 24px;
  --card-radius: 32px;
  --toy-shadow: 0 8px 0 rgba(0, 0, 0, 0.15);
  
  --font-kids: 'Fredoka', system-ui, -apple-system, sans-serif;
}

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

body {
  font-family: var(--font-kids);
  background: linear-gradient(135deg, #fff5f5 0%, #f0f3ff 50%, #e6fff2 100%);
  background-attachment: fixed;
  color: var(--text-dark);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

/* Custom scrollbar for a clean look */
::-webkit-scrollbar {
  width: 12px;
  height: 12px;
}
::-webkit-scrollbar-track {
  background: rgba(255, 255, 255, 0.5);
  border-radius: 10px;
}
::-webkit-scrollbar-thumb {
  background: var(--primary-pink);
  border: 3px solid rgba(255, 255, 255, 0.5);
  border-radius: 10px;
}

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 24px;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(10px);
  border-bottom: 4px solid rgba(0, 0, 0, 0.05);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.02);
  z-index: 10;
}

.logo-container {
  display: flex;
  align-items: center;
  gap: 12px;
  cursor: pointer;
}

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

.logo-text {
  font-size: 2rem;
  font-weight: 700;
  background: linear-gradient(to right, var(--primary-pink), var(--primary-blue), var(--primary-green));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: 1px;
}

.header-controls {
  display: flex;
  gap: 12px;
  align-items: center;
}

/* Premium Toy Button Styling */
.toy-btn {
  font-family: var(--font-kids);
  font-weight: 600;
  border: none;
  border-radius: var(--btn-radius);
  padding: 12px 24px;
  font-size: 1.1rem;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--text-light);
  transition: all 0.15s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  position: relative;
  outline: none;
}

.toy-btn-pink {
  background: var(--primary-pink);
  box-shadow: 0 6px 0 var(--primary-pink-shadow), var(--toy-shadow);
}
.toy-btn-pink:active {
  transform: translateY(4px);
  box-shadow: 0 2px 0 var(--primary-pink-shadow), 0 3px 6px rgba(0, 0, 0, 0.1);
}

.toy-btn-blue {
  background: var(--primary-blue);
  box-shadow: 0 6px 0 var(--primary-blue-shadow), var(--toy-shadow);
}
.toy-btn-blue:active {
  transform: translateY(4px);
  box-shadow: 0 2px 0 var(--primary-blue-shadow), 0 3px 6px rgba(0, 0, 0, 0.1);
}

.toy-btn-yellow {
  background: var(--primary-yellow);
  color: #5c4300;
  box-shadow: 0 6px 0 var(--primary-yellow-shadow), var(--toy-shadow);
}
.toy-btn-yellow:active {
  transform: translateY(4px);
  box-shadow: 0 2px 0 var(--primary-yellow-shadow), 0 3px 6px rgba(0, 0, 0, 0.1);
}

.toy-btn-green {
  background: var(--primary-green);
  box-shadow: 0 6px 0 var(--primary-green-shadow), var(--toy-shadow);
}
.toy-btn-green:active {
  transform: translateY(4px);
  box-shadow: 0 2px 0 var(--primary-green-shadow), 0 3px 6px rgba(0, 0, 0, 0.1);
}

.toy-btn-circle {
  border-radius: 50%;
  width: 50px;
  height: 50px;
  padding: 0;
  justify-content: center;
}

.toy-btn-circle img, .toy-btn-circle svg {
  width: 24px;
  height: 24px;
  fill: currentColor;
}

/* Screens Wrapper */
main {
  flex: 1;
  display: flex;
  flex-direction: column;
  position: relative;
}

.screen {
  flex: 1;
  display: flex;
  flex-direction: column;
  padding: 24px;
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
  opacity: 1;
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.hidden {
  display: none !important;
  opacity: 0;
  transform: scale(0.95);
}

/* Home Grid Screen */
.intro-banner {
  text-align: center;
  margin-bottom: 24px;
  animation: float 4s infinite ease-in-out;
}

.intro-title {
  font-size: 2.2rem;
  color: #2c3e50;
  margin-bottom: 8px;
}

.intro-subtitle {
  font-size: 1.2rem;
  color: #7f8c8d;
}

.pages-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 24px;
  padding: 10px;
}

.page-card {
  background: #ffffff;
  border: 4px solid #e2e8f0;
  border-radius: var(--card-radius);
  padding: 16px;
  cursor: pointer;
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  transition: all 0.25s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.05);
}

.page-card:hover {
  transform: translateY(-8px) scale(1.03);
  border-color: var(--primary-pink);
  box-shadow: 0 15px 25px rgba(255, 107, 139, 0.15);
}

.page-card:active {
  transform: translateY(-2px) scale(0.98);
}

.page-preview-container {
  width: 100%;
  aspect-ratio: 1;
  background: #fafafa;
  border-radius: calc(var(--card-radius) - 10px);
  border: 2px dashed #cbd5e1;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  margin-bottom: 12px;
}

.page-preview-container svg {
  width: 85%;
  height: 85%;
}

.page-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-dark);
  text-align: center;
}

.page-badge {
  position: absolute;
  top: 8px;
  right: 8px;
  background: var(--primary-green);
  color: var(--text-light);
  padding: 4px 10px;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 700;
  box-shadow: 0 3px 6px rgba(0, 0, 0, 0.1);
  transform: rotate(5deg);
}

.page-badge.colored {
  background: var(--primary-blue);
}

/* Coloring Studio Screen */
.workspace-container {
  display: flex;
  flex: 1;
  gap: 24px;
  min-height: 0; /* Important for flex child scrolling */
}

@media (max-width: 900px) {
  .workspace-container {
    flex-direction: column;
    overflow-y: auto;
  }
  .canvas-panel {
    height: 450px !important;
  }
}

.tools-panel {
  display: flex;
  flex-direction: column;
  gap: 16px;
  width: 160px;
  flex-shrink: 0;
}

@media (max-width: 900px) {
  .tools-panel {
    flex-direction: row;
    width: 100%;
    overflow-x: auto;
    padding-bottom: 8px;
  }
}

.tool-group {
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(10px);
  border: 4px solid #fff;
  border-radius: var(--card-radius);
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.05);
}

@media (max-width: 900px) {
  .tool-group {
    flex-direction: row;
    padding: 8px;
  }
}

.tool-group-label {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: #7f8c8d;
  text-align: center;
  font-weight: 700;
}

@media (max-width: 900px) {
  .tool-group-label {
    display: none;
  }
}

/* Tool Buttons */
.tool-btn {
  background: #ffffff;
  border: 3px solid #e2e8f0;
  border-radius: 16px;
  padding: 10px;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  font-family: var(--font-kids);
  font-weight: 700;
  font-size: 0.85rem;
  color: #475569;
  transition: all 0.15s cubic-bezier(0.175, 0.885, 0.32, 1.15);
}

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

.tool-btn:active {
  transform: translateY(1px);
}

.tool-btn.active {
  background: var(--primary-pink);
  color: #ffffff;
  border-color: var(--primary-pink-shadow);
  box-shadow: 0 4px 10px rgba(255, 107, 139, 0.3);
}

.tool-btn-icon {
  font-size: 1.6rem;
}

/* Canvas Panel */
.canvas-panel {
  flex: 1;
  background: #ffffff;
  border: 6px solid #fff;
  border-radius: var(--card-radius);
  box-shadow: 0 15px 30px rgba(0, 0, 0, 0.06), 0 0 0 4px rgba(255, 255, 255, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  min-width: 0;
  height: 550px;
}

.svg-canvas-container {
  width: 90%;
  height: 90%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.svg-canvas-container svg {
  width: 100%;
  height: 100%;
  max-width: 100%;
  max-height: 100%;
  transition: transform 0.1s ease;
}

/* Interactive SVG styling */
.fillable {
  cursor: pointer;
  transition: fill 0.25s ease-out;
}

.fillable:hover {
  filter: brightness(0.95);
  stroke-width: 6px !important;
}

/* Coloring page stroke properties */
svg path, svg circle, svg rect, svg ellipse, svg polygon {
  stroke: #2d3748;
  stroke-width: 4px;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* Sticker layer overlay */
.sticker-element {
  position: absolute;
  cursor: grab;
  transform-origin: center;
  touch-action: none;
}

.sticker-element:active {
  cursor: grabbing;
}

.sticker-element.selected {
  outline: 3px dashed var(--primary-blue);
  outline-offset: 4px;
  border-radius: 4px;
}

.sticker-delete-btn {
  position: absolute;
  top: -12px;
  right: -12px;
  background: var(--primary-pink);
  color: white;
  border: 2px solid white;
  border-radius: 50%;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  cursor: pointer;
  box-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

/* Palette Panel */
.palette-panel {
  width: 180px;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(10px);
  border: 4px solid #fff;
  border-radius: var(--card-radius);
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.05);
  flex-shrink: 0;
  max-height: 550px;
  overflow-y: auto;
}

@media (max-width: 900px) {
  .palette-panel {
    width: 100%;
    flex-direction: row;
    max-height: none;
    overflow-x: auto;
    padding: 10px;
  }
}

.palette-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

@media (max-width: 900px) {
  .palette-grid {
    display: flex;
    gap: 8px;
  }
}

.color-pot {
  aspect-ratio: 1;
  border-radius: 50%;
  cursor: pointer;
  position: relative;
  transition: all 0.2s cubic-bezier(0.175, 0.885, 0.32, 1.2);
  border: 4px solid #ffffff;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

@media (max-width: 900px) {
  .color-pot {
    width: 44px;
    height: 44px;
    flex-shrink: 0;
  }
}

.color-pot:hover {
  transform: scale(1.15) translateY(-2px);
}

.color-pot.active {
  transform: scale(1.2);
  border-color: #2c3e50;
  box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
}

.color-pot::after {
  content: '';
  position: absolute;
  top: 15%;
  left: 15%;
  width: 30%;
  height: 30%;
  background: rgba(255, 255, 255, 0.5);
  border-radius: 50%;
}

/* Custom/Glitter paint pots styling */
.glitter-pot {
  background-size: cover;
  animation: shine 3s infinite linear;
}

/* Sticker Drawer Overlay */
.sticker-drawer {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  background: #ffffff;
  border-top: 6px solid var(--primary-pink);
  border-top-left-radius: var(--card-radius);
  border-top-right-radius: var(--card-radius);
  box-shadow: 0 -10px 30px rgba(0, 0, 0, 0.1);
  padding: 24px;
  transform: translateY(105%);
  transition: transform 0.35s cubic-bezier(0.175, 0.885, 0.32, 1.1);
  z-index: 100;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.sticker-drawer.open {
  transform: translateY(0);
}

.drawer-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.drawer-title {
  font-size: 1.6rem;
  color: var(--text-dark);
}

.stickers-list {
  display: flex;
  gap: 16px;
  overflow-x: auto;
  padding: 10px 5px;
}

.sticker-pot {
  width: 70px;
  height: 70px;
  background: #f8fafc;
  border: 3px solid #e2e8f0;
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s;
  flex-shrink: 0;
}

.sticker-pot:hover {
  transform: scale(1.1) rotate(5deg);
  border-color: var(--primary-pink);
  background: #fff;
}

.sticker-pot svg, .sticker-pot img {
  width: 48px;
  height: 48px;
}

/* Particle Canvas for Confetti/Sparkles */
#particle-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 5;
}

/* Animations */
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

@keyframes bounce-slow {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  25% { transform: translateY(-4px) rotate(-3deg); }
  75% { transform: translateY(-2px) rotate(3deg); }
}

@keyframes shine {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

/* Sparkle animation for colored paths */
.colored-flash {
  animation: pulse-border 0.5s ease-out;
}

@keyframes pulse-border {
  0% { stroke: #2d3748; stroke-width: 4px; }
  50% { stroke: var(--primary-yellow); stroke-width: 8px; }
  100% { stroke: #2d3748; stroke-width: 4px; }
}

/* Footer Section */
footer {
  text-align: center;
  padding: 16px;
  color: #94a3b8;
  font-size: 0.9rem;
  margin-top: auto;
}