/* ═══════════════════════════════════════════
   EL DESAFÍO DE LAS EXTENSIONES
   Fuente: 'Fredoka One' (display) + 'Nunito' (body)
   Paleta y base compartida con Gato Saltarín
═══════════════════════════════════════════ */
@import url('https://fonts.googleapis.com/css2?family=Fredoka+One&family=Nunito:wght@400;600;800&display=swap');

:root {
  --pink-light:  #fce7f3;
  --pink:        #f9a8d4;
  --pink-mid:    #ec4899;
  --pink-dark:   #be185d;
  --rose:        #fb7185;
  --sky:         #bae6fd;
  --sky-dark:    #0369a1;
  --stone:       #78716c;
  --gold:        #fcd34d;
  --green:       #22c55e;
  --green-light: #bbf7d0;
  --red-light:   #fecaca;
  --text-dark:   #1e1b4b;
  --text-mid:    #4c1d95;
  --radius-lg:   18px;
  --shadow:      0 8px 32px rgba(190, 24, 93, 0.18);
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body {
  width: 100%;
  min-height: 100vh;
  font-family: 'Nunito', sans-serif;
  background: linear-gradient(135deg, #fdf4ff 0%, #fce7f3 60%, #bfdbfe 100%);
  color: var(--text-dark);
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    radial-gradient(circle at 20% 30%, #f9a8d470 0%, transparent 45%),
    radial-gradient(circle at 80% 70%, #bae6fd80 0%, transparent 45%);
  pointer-events: none;
  z-index: 0;
}

.container {
  position: relative;
  z-index: 1;
  width: 90%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem 0;
}

/* ══════════════════════════════════════════
   BOTÓN DE SONIDO
══════════════════════════════════════════ */
.sound-toggle {
  position: fixed;
  top: 1.2rem;
  right: 1.2rem;
  background: white;
  border: 2.5px solid var(--pink-mid);
  color: var(--pink-dark);
  width: 46px;
  height: 46px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 1.3rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.15s, box-shadow 0.15s;
  z-index: 2000;
  box-shadow: 0 4px 12px #f9a8d455;
}

.sound-toggle:hover {
  transform: scale(1.1);
  box-shadow: var(--shadow);
}

/* ══════════════════════════════════════════
   MENÚ PRINCIPAL
══════════════════════════════════════════ */
#menu {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 3rem 2rem 2rem;
  gap: 1.2rem;
  position: relative;
}

.menu-body {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 2.5rem;
}

#menu h1 {
  font-family: 'Fredoka One', cursive;
  font-size: clamp(1.6rem, 4vw, 2.6rem);
  color: var(--pink-dark);
  letter-spacing: 1px;
  text-shadow: 3px 3px 0 #fbcfe8, 5px 5px 0 #f9a8d4;
  text-align: center;
}

.menu-pet {
  width: 208px;
  height: auto;
  flex-shrink: 0;
  filter: drop-shadow(0 4px 12px #f9a8d4aa);
  animation: petBob 2.8s ease-in-out infinite;
  pointer-events: none;
}

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

.difficulty-selector {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.75rem;
  margin-top: 0.75rem;
  width: 100%;
  max-width: 320px;
}

.difficulty-selector h2 {
  font-family: 'Fredoka One', cursive;
  font-size: 1.1rem;
  color: var(--stone);
  font-weight: normal;
  letter-spacing: 0.05em;
}

.difficulty-btn {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  width: 100%;
  padding: 0.9rem 1.2rem;
  border: 3px solid var(--pink-mid);
  border-radius: var(--radius-lg);
  background: white;
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.15s, background 0.15s;
  box-shadow: 0 4px 16px #f9a8d455;
  font-family: 'Fredoka One', cursive;
  font-size: 1.2rem;
  color: var(--pink-dark);
  text-align: left;
}

.difficulty-btn:hover {
  background: var(--pink-light);
  transform: translateY(-3px) scale(1.02);
  box-shadow: var(--shadow);
}

.difficulty-btn:active {
  transform: scale(0.97);
}

.library-btn {
  margin-top: 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.75rem 2rem;
  border: 2.5px solid var(--sky-dark);
  border-radius: 50px;
  background: white;
  color: var(--sky-dark);
  font-family: 'Fredoka One', cursive;
  font-size: 1.1rem;
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.15s, background 0.15s;
  box-shadow: 0 4px 12px #bae6fd88;
}

.library-btn:hover {
  background: #f0f9ff;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px #bae6fd88;
}

/* ══════════════════════════════════════════
   JUEGO
══════════════════════════════════════════ */
#game {
  display: none;
}

.game-header {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.2rem;
  background: white;
  padding: 0.75rem 1.2rem;
  border-radius: var(--radius-lg);
  box-shadow: 0 2px 12px #f9a8d433;
  border: 2px solid var(--pink-light);
}

.back-btn {
  background: white;
  border: 2px solid var(--pink-mid);
  color: var(--pink-dark);
  padding: 0.4rem 1rem;
  border-radius: 50px;
  cursor: pointer;
  font-family: 'Nunito', sans-serif;
  font-weight: 800;
  font-size: 0.9rem;
  transition: background 0.15s, transform 0.15s;
}

.back-btn:hover {
  background: var(--pink-light);
  transform: translateX(-2px);
}

.lives {
  font-family: 'Fredoka One', cursive;
  font-size: 1.2rem;
  color: var(--pink-dark);
}

.level-info {
  font-family: 'Fredoka One', cursive;
  font-size: 1.1rem;
  color: var(--text-mid);
}

/* ── Área de juego ── */
.game-area {
  display: flex;
  gap: 0;
  position: relative;
}

.column {
  display: flex;
  flex-direction: column;
  gap: 12px;
  flex: 1;
}

#extensions   { flex: 0 0 180px; }
#arrow-lane   { flex: 0 0 160px; }
#descriptions { flex: 1; }

#arrowCanvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 10;
}

/* ── Cajas ── */
.extension-box,
.description-box {
  background: white;
  padding: 1rem 1.1rem;
  border-radius: var(--radius-lg);
  cursor: grab;
  transition: background 0.15s, border-color 0.15s, transform 0.15s, box-shadow 0.15s;
  border: 2.5px solid var(--pink-light);
  position: relative;
  user-select: none;
  box-shadow: 0 2px 8px #f9a8d422;
  font-weight: 600;
}

.extension-box {
  font-family: 'Fredoka One', cursive;
  font-size: 1.1rem;
  color: var(--pink-dark);
  text-align: center;
}

.description-box {
  font-size: 0.92rem;
  color: var(--text-dark);
}

.extension-box:hover,
.description-box:hover {
  background: var(--pink-light);
  border-color: var(--pink-mid);
  transform: translateY(-3px);
  box-shadow: var(--shadow);
}

.extension-box.drag-source,
.description-box.drag-source {
  border-color: var(--pink-mid);
  background: #fdf2f8;
  cursor: grabbing;
  box-shadow: var(--shadow);
}

.extension-box.drag-over,
.description-box.drag-over {
  border-color: var(--pink-mid);
  background: var(--pink-light);
  transform: scale(1.03);
  box-shadow: var(--shadow);
}

.extension-box.new-level::before {
  content: '✨';
  position: absolute;
  top: 4px;
  right: 8px;
  font-size: 1rem;
}

.matched {
  background: var(--green-light) !important;
  border-color: var(--green) !important;
  pointer-events: none;
  cursor: default;
  transform: none !important;
  box-shadow: none !important;
}

/* ══════════════════════════════════════════
   MODAL
══════════════════════════════════════════ */
.modal {
  display: none;
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: rgba(190, 24, 93, 0.15);
  backdrop-filter: blur(6px);
  justify-content: center;
  align-items: center;
  z-index: 1000;
}

.modal-content {
  background: white;
  padding: 3rem 2.5rem;
  border-radius: var(--radius-lg);
  text-align: center;
  position: relative;
  max-width: 420px;
  width: 90%;
  box-shadow: 0 16px 48px rgba(190, 24, 93, 0.2);
  border: 3px solid var(--pink-light);
}

.modal-content h2 {
  font-family: 'Fredoka One', cursive;
  font-size: 2.2rem;
  color: var(--pink-dark);
  margin-bottom: 1.5rem;
}

.modal-btn {
  padding: 0.75rem 2.2rem;
  border: none;
  border-radius: 50px;
  background: var(--pink-dark);
  color: white;
  font-family: 'Fredoka One', cursive;
  font-size: 1.15rem;
  cursor: pointer;
  box-shadow: 0 4px 16px #be185d44;
  transition: transform 0.15s, box-shadow 0.15s;
}

.modal-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px #be185d44;
}

.modal-btn:active {
  transform: scale(0.96);
}

/* ══════════════════════════════════════════
   BIBLIOTECA
══════════════════════════════════════════ */
#library {
  display: none;
  flex-direction: column;
  gap: 1.2rem;
}

.library-header {
  background: white;
  padding: 1rem 1.5rem;
  border-radius: var(--radius-lg);
  box-shadow: 0 2px 12px #f9a8d433;
  border: 2px solid var(--pink-light);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

#library h2 {
  font-family: 'Fredoka One', cursive;
  font-size: 1.8rem;
  color: var(--pink-dark);
  flex: 1;
  text-align: center;
}

#library-content {
  background: white;
  padding: 2rem;
  border-radius: var(--radius-lg);
  box-shadow: 0 4px 20px #f9a8d433;
  border: 2px solid var(--pink-light);
  max-height: calc(80vh - 100px);
  overflow-y: auto;
}

.library-section {
  margin-bottom: 2rem;
}

.library-section h3 {
  font-family: 'Fredoka One', cursive;
  color: var(--pink-dark);
  margin-bottom: 0.75rem;
  font-size: 1.3rem;
  font-weight: normal;
}

.library-item {
  background: var(--pink-light);
  padding: 0.75rem 1rem;
  border-radius: 10px;
  margin-bottom: 0.5rem;
  cursor: pointer;
  transition: background 0.15s, transform 0.15s, border-color 0.15s;
  text-decoration: none;
  color: var(--text-dark);
  display: block;
  font-weight: 600;
  font-size: 0.92rem;
  border: 2px solid transparent;
}

.library-item:hover {
  background: #fdf2f8;
  border-color: var(--pink-mid);
  transform: translateX(4px);
}

.library-item strong {
  color: var(--pink-dark);
  font-family: 'Fredoka One', cursive;
  font-size: 1rem;
  margin-right: 0.5rem;
}

.library-item::after {
  content: '🔗';
  float: right;
  opacity: 0.5;
  font-size: 0.85rem;
}

/* ══════════════════════════════════════════
   FUEGOS ARTIFICIALES
══════════════════════════════════════════ */
.firework {
  position: absolute;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  animation: explode 1s ease-out forwards;
}

@keyframes explode {
  0%   { transform: translate(0, 0); opacity: 1; }
  100% { transform: translate(var(--x), var(--y)); opacity: 0; }
}