/* ===== RESET Y BASE ===== */
body {
  margin: 0;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: #f9f9f6;
  color: #333;
  text-align: center;
  overflow-x: hidden;
}

/* ===== LOGO ===== */
.header-logo {
  text-align: center;
  padding: 1rem 0;
  background: linear-gradient(120deg, #e0f7fa, #f1f8f9);
}

.logo {
  width: 140px;
  height: auto;
  animation: float 3s ease-in-out infinite;
  filter: drop-shadow(0 0 8px rgba(57,255,20,0.3));
  transition: transform 0.3s ease;
}
.logo:hover {
  transform: scale(1.08) rotate(-3deg);
}

/* ===== BOTÓN VOLVER ===== */
.btn-volver {
  position: fixed;
  top: 20px;
  left: 20px;
  background: linear-gradient(135deg, #39ff14, #7d3cff);
  border: none;
  color: white;
  font-size: 1.5rem;
  border-radius: 50%;
  width: 48px;
  height: 48px;
  cursor: pointer;
  box-shadow: 0 4px 12px rgba(0,0,0,0.25);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  z-index: 1000;
}
.btn-volver:hover {
  transform: scale(1.1);
  box-shadow: 0 0 18px rgba(125,60,255,0.5);
}

/* ===== SECCIÓN BIENVENIDA ===== */
.productos {
  max-width: 800px;
  margin: 2rem auto;
  padding: 2rem;
  background: white;
  border-radius: 18px;
  box-shadow: 0 6px 16px rgba(0,0,0,0.12);
  animation: fadeIn 1s ease;
}
.productos h2 {
  color: #1e90ff;
  margin-bottom: 1rem;
  text-shadow: 0 0 6px rgba(125,60,255,0.3);
}

/* ===== BOTONES DE CATEGORÍAS ===== */
.botones-categorias {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  margin: 2rem 0;
}
.botones-categorias button {
  background: linear-gradient(135deg, #39ff14, #7d3cff);
  background-size: 200% 200%;
  animation: gradientMove 3s ease infinite;
  border: none;
  padding: 1rem 2rem;
  border-radius: 28px;
  color: white;
  font-size: 1rem;
  font-weight: bold;
  cursor: pointer;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  box-shadow: 0 0 12px rgba(125,60,255,0.35);
}
.botones-categorias button:hover {
  transform: scale(1.08);
  box-shadow: 0 0 20px rgba(57,255,20,0.45);
}

/* ===== MODAL GENERAL ===== */
.modal {
  display: none;
  position: fixed;
  z-index: 900;
  left: 0; top: 0;
  width: 100%; height: 100%;
  background-color: rgba(0,0,0,0.6);
  justify-content: center;
  align-items: center;
}
.modal-contenido {
  background: #fff;           /* fondo blanco en TODO el modal */
  padding: 2rem;
  border-radius: 18px;
  max-width: 750px;
  width: 90%;
  max-height: 80vh;
  overflow-y: auto;           /* scroll en todo el modal */
  text-align: center;
  box-shadow: 0 8px 20px rgba(0,0,0,0.25);
  animation: aparecer 0.3s ease;
  position: relative;
}

/* Mejorar títulos y textos del modal */
.modal-contenido h2 {
  color: #1e90ff;
  margin-bottom: 1rem;
  text-shadow: 0 0 6px rgba(125,60,255,0.2);
}
.modal-contenido p {
  color: #444;
  margin-bottom: 1.5rem;
  font-size: 1rem;
  line-height: 1.5;
}


/* Scroll Chrome, Edge, Safari */
.modal-contenido::-webkit-scrollbar {
  width: 8px;
}
.modal-contenido::-webkit-scrollbar-track {
  background: #eaeaea;
  border-radius: 10px;
}
.modal-contenido::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, #7d3cff);
  border-radius: 10px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.2);
}
.modal-contenido::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(180deg, #1e90ff, #7d3cff);
}


.cerrar-modal {
  position: absolute;
  top: 15px; right: 20px;
  background: none;
  border: none;
  font-size: 1.8rem;
  cursor: pointer;
  color: #666;
  transition: color 0.3s;
}
.cerrar-modal:hover {
  color: #1e90ff;
}

/* ===== PRODUCTOS EN MODAL ===== */
.contenedor-productos,
#contenedor-productos-modal {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 20px;
  margin-top: 20px;
  padding: 10px;
}
.producto {
  background: linear-gradient(135deg, #ffffff, #f1f8f9);
  border-radius: 18px;
  padding: 14px;
  text-align: center;
  box-shadow: 0 6px 14px rgba(0,0,0,0.12);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  position: relative;
}
.producto:hover {
  transform: translateY(-6px) scale(1.03);
  box-shadow: 0 10px 22px rgba(125,60,255,0.25);
}
.producto img {
  width: 100%;
  height: 180px;
  object-fit: contain; /* encaja toda la imagen */
  background-color: #fff; /* opcional, rellena con blanco */
  border-radius: 10px;
  margin-bottom: 12px;
}

.producto h3 {
  font-size: 1.2rem;
  margin-bottom: 6px;
  color: #1e90ff;
}
.producto p {
  font-weight: bold;
  color: #000;
  margin-bottom: 12px;
}
.producto button {
  background: linear-gradient(135deg, #39ff14, #7d3cff);
  color: #fff;
  border: none;
  padding: 10px 16px;
  border-radius: 12px;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.25s ease;
  font-weight: bold;
}
.producto button:hover {
  transform: scale(1.08);
  box-shadow: 0 0 12px rgba(57,255,20,0.4);
}

/* ===== MODAL UNIDADES ===== */
#modal-unidades {
  display: none;
  position: fixed;
  z-index: 950;
  left: 0; top: 0;
  width: 100%; height: 100%;
  background: rgba(0,0,0,0.6);
  justify-content: center;
  align-items: center;
}
.modal-unidades-contenido {
  background: #fff;
  padding: 2rem;
  border-radius: 18px;
  width: 90%;
  max-width: 400px;
  text-align: center;
  box-shadow: 0 6px 14px rgba(0,0,0,0.2);
}
.controles-unidades {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 1rem;
  margin: 1rem 0;
}
.controles-unidades button {
  background: #1e90ff;
  border: none;
  color: white;
  font-size: 1.5rem;
  padding: 0.5rem 1rem;
  border-radius: 50%;
  cursor: pointer;
  transition: background 0.3s ease;
}
.controles-unidades button:hover {
  background: #7d3cff;
}
#btn-confirmar-unidades {
  background: linear-gradient(135deg, #39ff14, #7d3cff);
  border: none;
  padding: 0.7rem 1.5rem;
  border-radius: 28px;
  color: white;
  font-weight: bold;
  cursor: pointer;
  box-shadow: 0 0 12px rgba(125,60,255,0.3);
  transition: transform 0.3s ease;
}
#btn-confirmar-unidades:hover {
  transform: scale(1.05);
}
#error-unidades {
  display: none;
  color: red;
  font-size: 0.9rem;
  margin-top: 0.8rem;
}

/* ===== MENSAJE CARRITO ===== */
.mensaje-carrito {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background: #1e90ff;
  color: white;
  padding: 1rem 1.5rem;
  border-radius: 12px;
  box-shadow: 0 4px 10px rgba(0,0,0,0.2);
  opacity: 0;
  transition: opacity 0.4s ease;
  z-index: 1000;
}
.mensaje-carrito.visible {
  opacity: 1;
}

/* ===== BOTÓN FINALIZAR COMPRA ===== */
#modal-resumen .modal-contenido button:not(.cerrar-modal) {
  background: linear-gradient(135deg, #39ff14, #7d3cff);
  padding: 0.9rem 1.2rem;
  border-radius: 28px;
  color: #fff;
  font-weight: 700;
  font-size: 1rem;
  cursor: pointer;
  width: 100%;
  max-width: 260px;
  margin: 1rem auto 0;
  box-shadow: 0 0 14px rgba(125,60,255,0.3);
  transition: transform 0.2s ease, box-shadow 0.3s ease;
}
#modal-resumen .modal-contenido button:not(.cerrar-modal):hover {
  transform: translateY(-2px);
  box-shadow: 0 0 22px rgba(57,255,20,0.45);
}
#modal-resumen #total-resumen {
  margin-top: 0.8rem;
  font-weight: 700;
  color: #1e90ff;
  font-size: 1.1rem;
}

/* ===== ANIMACIONES ===== */
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes gradientMove {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}
@keyframes aparecer {
  from { transform: scale(0.9); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}