/* ==========================================================================
   KidGenius Club — Bono 2: Rompecabezas & Puzzles Didácticos
   Design System & Stylesheet
   ========================================================================== */

:root {
  /* KidGenius Color Palette Tokens */
  --kg-purple-dark: #221245;
  --kg-purple-main: #35206F;
  --kg-purple-light: #4B2C99;
  --kg-purple-soft: #554A6D;
  --kg-purple-card: rgba(53, 32, 111, 0.85);

  --kg-green-main: #7AC943;
  --kg-green-dark: #4F9A25;
  --kg-green-light: #98E062;

  --kg-blue-main: #38A9E8;
  --kg-blue-dark: #2077B8;
  --kg-blue-light: #70C5F5;

  --kg-orange-main: #FF8A25;
  --kg-orange-dark: #D4660C;
  --kg-orange-light: #FFA658;

  --kg-yellow-main: #FFC928;
  --kg-yellow-dark: #D9A00A;
  --kg-yellow-light: #FFE071;

  --kg-pink-main: #FF5E8E;
  --kg-pink-dark: #D82F63;

  --kg-bg-gradient: linear-gradient(135deg, #1d0f3b 0%, #35206f 50%, #201140 100%);
  --kg-card-bg: rgba(255, 255, 255, 0.95);
  --kg-card-dark: rgba(35, 20, 75, 0.75);

  --font-heading: 'Fredoka', cursive, sans-serif;
  --font-body: 'Nunito', sans-serif;

  --shadow-cartoon: 0 8px 0px rgba(0, 0, 0, 0.25);
  --shadow-button-green: 0 6px 0px var(--kg-green-dark);
  --shadow-button-blue: 0 6px 0px var(--kg-blue-dark);
  --shadow-button-orange: 0 6px 0px var(--kg-orange-dark);
  --shadow-button-yellow: 0 6px 0px var(--kg-yellow-dark);
  --shadow-button-purple: 0 6px 0px #21114a;
}

* {
  box-sizing: border-box;
  user-select: none;
  -webkit-user-select: none;
  -webkit-touch-callout: none;
  touch-action: manipulation;
}

body {
  margin: 0;
  padding: 0;
  font-family: var(--font-body);
  background: var(--kg-bg-gradient);
  color: #2D3748;
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
}

/* Background animated stars & bubbles */
.bg-decorations {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.floating-star {
  position: absolute;
  color: rgba(255, 201, 40, 0.35);
  animation: floatAround 14s infinite ease-in-out;
}

@keyframes floatAround {
  0%, 100% { transform: translateY(0) rotate(0deg) scale(1); }
  50% { transform: translateY(-25px) rotate(180deg) scale(1.15); }
}

/* Typography */
h1, h2, h3, h4, .font-heading {
  font-family: var(--font-heading);
  letter-spacing: 0.5px;
}

.font-nunito {
  font-family: var(--font-body);
}

/* 3D Kid-Friendly Cartoon Buttons */
.btn-kg {
  font-family: var(--font-heading);
  font-weight: 600;
  border-radius: 1.25rem;
  padding: 0.75rem 1.5rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  transition: all 0.12s ease;
  cursor: pointer;
  border: none;
  text-decoration: none;
  position: relative;
  text-shadow: 0 1px 2px rgba(0,0,0,0.2);
}

.btn-kg:active {
  transform: translateY(4px);
}

.btn-kg-green {
  background: linear-gradient(180deg, var(--kg-green-light) 0%, var(--kg-green-main) 100%);
  color: #ffffff;
  box-shadow: var(--shadow-button-green), 0 10px 20px rgba(122, 201, 67, 0.3);
}
.btn-kg-green:active {
  box-shadow: 0 2px 0px var(--kg-green-dark);
}

.btn-kg-blue {
  background: linear-gradient(180deg, var(--kg-blue-light) 0%, var(--kg-blue-main) 100%);
  color: #ffffff;
  box-shadow: var(--shadow-button-blue), 0 10px 20px rgba(56, 169, 232, 0.3);
}
.btn-kg-blue:active {
  box-shadow: 0 2px 0px var(--kg-blue-dark);
}

.btn-kg-orange {
  background: linear-gradient(180deg, var(--kg-orange-light) 0%, var(--kg-orange-main) 100%);
  color: #ffffff;
  box-shadow: var(--shadow-button-orange), 0 10px 20px rgba(255, 138, 37, 0.3);
}
.btn-kg-orange:active {
  box-shadow: 0 2px 0px var(--kg-orange-dark);
}

.btn-kg-yellow {
  background: linear-gradient(180deg, var(--kg-yellow-light) 0%, var(--kg-yellow-main) 100%);
  color: #4A3305;
  text-shadow: none;
  box-shadow: var(--shadow-button-yellow), 0 10px 20px rgba(255, 201, 40, 0.3);
}
.btn-kg-yellow:active {
  box-shadow: 0 2px 0px var(--kg-yellow-dark);
}

.btn-kg-purple {
  background: linear-gradient(180deg, #623db8 0%, var(--kg-purple-light) 100%);
  color: #ffffff;
  box-shadow: var(--shadow-button-purple), 0 10px 20px rgba(75, 44, 153, 0.3);
}
.btn-kg-purple:active {
  box-shadow: 0 2px 0px #21114a;
}

/* Glassmorphism Containers */
.kg-glass {
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 4px solid rgba(255, 255, 255, 0.8);
  border-radius: 2rem;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.25), inset 0 2px 4px rgba(255, 255, 255, 0.9);
}

.kg-glass-dark {
  background: rgba(45, 25, 95, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 3px solid rgba(150, 110, 240, 0.35);
  border-radius: 2rem;
  box-shadow: 0 20px 40px rgba(10, 4, 30, 0.45);
  color: #ffffff;
}

/* Island & World Map Nodes */
.world-island {
  transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.world-island:hover {
  transform: translateY(-8px) scale(1.02);
}

.level-node {
  width: 4rem;
  height: 4rem;
  border-radius: 9999px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  transition: all 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
  position: relative;
  cursor: pointer;
}
.level-node:hover {
  transform: scale(1.12);
}
.level-node:active {
  transform: scale(0.95);
}

.level-unlocked {
  background: linear-gradient(135deg, #FFE071 0%, #FFC928 100%);
  color: #4A3305;
  box-shadow: 0 6px 0px #D9A00A, 0 10px 20px rgba(255, 201, 40, 0.4);
  border: 3px solid #FFF5C0;
}

.level-completed {
  background: linear-gradient(135deg, #98E062 0%, #7AC943 100%);
  color: #ffffff;
  box-shadow: 0 6px 0px #4F9A25, 0 10px 20px rgba(122, 201, 67, 0.4);
  border: 3px solid #E1FFC0;
}

.level-locked {
  background: #645785;
  color: #9E93BE;
  box-shadow: 0 6px 0px #3F345D;
  border: 3px solid #786D98;
  cursor: not-allowed;
  opacity: 0.75;
}

/* Jigsaw Canvas & Snap Pieces */
.puzzle-board {
  touch-action: none;
  position: relative;
  background: #f0edfa;
  border: 4px dashed #a08dd3;
  border-radius: 1.5rem;
  overflow: hidden;
  box-shadow: inset 0 4px 12px rgba(0,0,0,0.1);
}

.puzzle-piece {
  position: absolute;
  cursor: grab;
  touch-action: none;
  filter: drop-shadow(0 6px 8px rgba(0,0,0,0.25));
  transition: transform 0.1s ease, filter 0.2s ease;
  z-index: 10;
}
.puzzle-piece:active, .puzzle-piece.dragging {
  cursor: grabbing;
  transform: scale(1.08);
  filter: drop-shadow(0 14px 18px rgba(0,0,0,0.35));
  z-index: 100 !important;
}
.puzzle-piece.placed {
  cursor: default;
  filter: none;
  z-index: 1 !important;
  pointer-events: none;
}

/* Slide Puzzle Grid */
.slide-grid {
  display: grid;
  gap: 8px;
  background: #35206f;
  padding: 12px;
  border-radius: 1.5rem;
  box-shadow: 0 12px 30px rgba(0,0,0,0.35);
}

.slide-tile {
  background: linear-gradient(135deg, #ffffff 0%, #f0ebff 100%);
  border-radius: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 700;
  color: var(--kg-purple-main);
  box-shadow: 0 6px 0px #b8a2e8, 0 8px 15px rgba(0,0,0,0.1);
  cursor: pointer;
  transition: all 0.15s ease;
  position: relative;
  overflow: hidden;
}
.slide-tile:hover {
  transform: translateY(-2px);
}
.slide-tile:active {
  transform: translateY(3px);
  box-shadow: 0 2px 0px #b8a2e8;
}
.slide-tile.empty {
  background: rgba(255,255,255,0.08);
  box-shadow: inset 0 4px 8px rgba(0,0,0,0.2);
  cursor: default;
}

/* Math Reveal Game */
.math-cell {
  background: #ffffff;
  border-radius: 0.75rem;
  border: 2px solid #D8D1F0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  color: #35206F;
  transition: all 0.2s ease;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}
.math-cell.revealed {
  border: none;
  cursor: default;
}

.math-option-card {
  background: linear-gradient(180deg, #FFFFFF 0%, #F5F1FF 100%);
  border: 3px solid #BCA8F2;
  border-radius: 1.25rem;
  padding: 0.85rem 1.25rem;
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  color: #35206F;
  box-shadow: 0 6px 0px #9782D4, 0 10px 15px rgba(0,0,0,0.08);
  cursor: pointer;
  transition: all 0.15s ease;
}
.math-option-card:hover {
  transform: translateY(-3px) scale(1.04);
  border-color: var(--kg-green-main);
}
.math-option-card:active {
  transform: translateY(3px);
  box-shadow: 0 2px 0px #9782D4;
}

/* Avatar Cards */
.avatar-card {
  background: rgba(255, 255, 255, 0.9);
  border: 4px solid transparent;
  border-radius: 1.75rem;
  padding: 1.25rem;
  cursor: pointer;
  transition: all 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
  box-shadow: 0 10px 25px rgba(0,0,0,0.15);
}
.avatar-card:hover {
  transform: translateY(-8px) scale(1.03);
  box-shadow: 0 16px 30px rgba(0,0,0,0.25);
}
.avatar-card.selected {
  border-color: var(--kg-yellow-main);
  background: #ffffff;
  box-shadow: 0 0 0 4px #FFC928, 0 16px 30px rgba(255, 201, 40, 0.4);
  transform: translateY(-8px) scale(1.05);
}

/* Diploma Styles */
.diploma-frame {
  background: #FFFDF5;
  border: 12px double #D4AF37;
  border-radius: 2rem;
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.35), inset 0 0 40px rgba(212, 175, 55, 0.15);
  position: relative;
}

/* Animations */
@keyframes bounceSoft {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}
.animate-bounce-soft {
  animation: bounceSoft 2.5s infinite ease-in-out;
}

@keyframes pulseGlow {
  0%, 100% { filter: drop-shadow(0 0 8px rgba(255, 201, 40, 0.6)); }
  50% { filter: drop-shadow(0 0 20px rgba(255, 201, 40, 0.95)); }
}
.animate-pulse-glow {
  animation: pulseGlow 2s infinite ease-in-out;
}

@keyframes popIn {
  0% { transform: scale(0.6); opacity: 0; }
  70% { transform: scale(1.08); opacity: 1; }
  100% { transform: scale(1); opacity: 1; }
}
.animate-pop {
  animation: popIn 0.4s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
}

/* Scrollbar Styling */
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}
::-webkit-scrollbar-track {
  background: rgba(35, 20, 75, 0.5);
}
::-webkit-scrollbar-thumb {
  background: var(--kg-purple-light);
  border-radius: 5px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--kg-green-main);
}