@import url('https://fonts.googleapis.com/css2?family=Quicksand:wght@400;500;600&display=swap');

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

body {
  font-family: 'Quicksand', 'Segoe UI', 'Roboto', Arial, sans-serif;
  background-color: #f8f9fa;
  color: #333333;
  width: 450px;
  height: 600px;
  overflow: hidden;
}

.container {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.view {
  width: 100%;
  height: 100%;
  display: none;
  flex-direction: column;
  padding: 20px;
  opacity: 0;
  transform: translateX(100%);
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.view.active {
  display: flex;
  opacity: 1;
  transform: translateX(0);
}

.header {
  text-align: center;
  margin-bottom: 15px;
  position: relative;
}

.header h2 {
  font-family: 'Quicksand', sans-serif;
  font-size: 28px;
  font-weight: 500;
  color: #000000;
  text-transform: none;
  letter-spacing: 0.5px;
}

#subapp-title {
  font-family: 'Quicksand', sans-serif;
  font-size: 24px;
  font-weight: 500;
  color: #000000;
  text-transform: none;
}

.back-btn {
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  font-size: 16px;
  color: #000000;
  cursor: pointer;
  transition: color 0.3s ease;
}

.back-btn:hover {
  color: #333333;
}

.core-buttons {
  display: flex;
  justify-content: space-between;
  margin-bottom: 15px;
}

.core-btn {
  background-color: #000000;
  color: #ffffff;
  border: none;
  padding: 10px 15px;
  border-radius: 20px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  width: 48%;
  box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.core-btn:hover {
  background-color: #333333;
  box-shadow: 0 4px 8px rgba(0,0,0,0.15);
}

.search-container {
  margin-bottom: 15px;
}

#search-input {
  width: 100%;
  padding: 10px 15px;
  border: 1px solid #ced4da;
  border-radius: 20px;
  font-size: 14px;
  transition: all 0.3s ease;
}

#search-input:focus {
  border-color: #000000;
  outline: none;
  box-shadow: 0 0 0 2px rgba(0,0,0,0.1);
}

.button-container, .subapp-button-container {
  flex-grow: 1;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
  gap: 10px;
  background-color: #ffffff;
  border-radius: 12px;
  padding: 15px;
  box-shadow: 0 2px 10px rgba(0,0,0,0.05);
  overflow-y: auto;
  max-height: calc(100vh - 200px);
  scrollbar-width: thin;
  scrollbar-color: #000000 #f8f9fa;
}

.button-container::-webkit-scrollbar, .subapp-button-container::-webkit-scrollbar {
  width: 6px;
}

.button-container::-webkit-scrollbar-track, .subapp-button-container::-webkit-scrollbar-track {
  background: #f8f9fa;
}

.button-container::-webkit-scrollbar-thumb, .subapp-button-container::-webkit-scrollbar-thumb {
  background-color: #000000;
  border-radius: 3px;
}

.btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background-color: #f8f9fa;
  border: 1px solid #e9ecef;
  border-radius: 10px;
  padding: 10px;
  width: 100%;
  height: 90px;
  cursor: pointer;
  transition: all 0.3s ease;
  text-align: center;
}

.btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 4px 8px rgba(0,0,0,0.1);
  background-color: #e9ecef;
}

.btn img {
  width: 40px;
  height: 40px;
  margin-bottom: 8px;
  object-fit: contain;
}

.btn span {
  font-family: 'Quicksand', sans-serif;
  font-size: 11px;
  color: #333333;
  font-weight: 500;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 100%;
  line-height: 1.2;
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.footer {
  margin-top: 15px;
  font-size: 11px;
  color: #6c757d;
  text-align: center;
}

@media (max-width: 420px) {
  .button-container, .subapp-button-container {
    grid-template-columns: repeat(auto-fill, minmax(70px, 1fr));
  }
  
  .btn {
    height: 80px;
  }
  
  .btn img {
    width: 35px;
    height: 35px;
  }
  
  .btn span {
    font-size: 10px;
  }
}

@media (max-width: 320px) {
  .button-container, .subapp-button-container {
    grid-template-columns: repeat(auto-fill, minmax(60px, 1fr));
  }
  
  .btn {
    height: 70px;
  }
  
  .btn img {
    width: 30px;
    height: 30px;
  }
  
  .btn span {
    font-size: 9px;
  }
}