body {
  font-family: Arial, sans-serif;
  background-color: #f4f4f4;
  margin: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  transition: background-color 0.3s, color 0.3s;
}

body.dark-mode {
  background-color: #333;
  color: #f4f4f4;
}

.container {
  background: white;
  padding: 20px;
  border-radius: 10px;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
  width: 90%;
  max-width: 800px;
  transition: background-color 0.3s, color 0.3s;
}

.container.dark-mode {
  background: #444;
  color: #f4f4f4;
}

h1 {
  text-align: center;
  color: inherit;
}

button,
select,
textarea {
  transition: background-color 0.3s, color 0.3s, border-color 0.3s;
}

button {
  cursor: pointer;
  border: none;
  border-radius: 5px;
  padding: 10px 20px;
  font-size: 14px;
}

#add-button {
  background-color: #28a745;
  color: white;
}

#add-button:hover {
  background-color: #218838;
}

#toggle-dark-mode {
  background-color: #007bff;
  color: white;
  margin-bottom: 20px;
}

#toggle-dark-mode:hover {
  background-color: #0056b3;
}

.form-group {
  display: flex;
  margin-bottom: 20px;
}

#message-input {
  flex: 1;
  padding: 10px;
  border-radius: 5px;
  border: 1px solid #ddd;
  margin-right: 10px;
}

.options-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

.import-export {
  display: flex;
  gap: 10px;
}

.import-export button {
  background-color: #17a2b8;
  color: white;
}

.import-export button:hover {
  background-color: #138496;
}

.import-export button:disabled {
  background-color: #b5d1d8;
  cursor: not-allowed;
}

.sort-options {
  display: flex;
  gap: 5px;
  align-items: center;
}

.sort-options label {
  margin-right: 5px;
}

.sort-options select {
  padding: 5px;
  border-radius: 5px;
  border: 1px solid #ddd;
}

.messages-container {
  max-height: 500px;
  overflow-y: auto;
  overflow-x: hidden;
  display: flex;
  justify-content: space-between;
  transition: filter 0.3s;
}

.column {
  flex: 1;
  margin: 0 10px;
}

.message-box {
  background: #fff;
  border: 1px solid #ddd;
  border-radius: 10px;
  padding: 10px;
  margin-bottom: 10px;
  cursor: pointer;
  box-shadow: 0 0 5px rgba(0, 0, 0, 0.1);
  position: relative;
}

.message-box:hover {
  background-color: #f1f1f1;
}

body.dark-mode .message-box {
  background: #555;
  border-color: #666;
}

body.dark-mode .message-box:hover {
  background-color: #666;
}

.notification {
  position: fixed;
  bottom: 10px;
  left: 50%;
  transform: translateX(-50%);
  background-color: #28a745;
  color: white;
  padding: 10px 20px;
  border-radius: 5px;
  display: none;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

body.dark-mode .notification {
  background-color: #28a745;
  color: white;
}

.popup {
  display: none;
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0.9);
  background-color: white;
  padding: 20px;
  border-radius: 10px;
  border: 2px solid #000;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
  z-index: 1000;
  opacity: 0;
  transition: all 0.5s ease;
}

.popup.show {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1);
}

body.dark-mode .popup {
  background-color: #444;
  color: #f4f4f4;
  border: 2px solid #fff;
}

body.blur-background {
  overflow: hidden;
}

body.blur-background .container {
  filter: blur(5px);
  pointer-events: none;
}

.popup-content {
  text-align: center;
}

.confirm-delete {
  background-color: #dc3545;
  color: white;
  margin-right: 10px;
}

.confirm-delete:hover {
  background-color: #c82333;
}

.cancel-delete {
  background-color: #6c757d;
  color: white;
}

.cancel-delete:hover {
  background-color: #5a6268;
}

.confirm-edit {
  background-color: #28a745;
  color: white;
  margin-right: 10px;
}

.confirm-edit:hover {
  background-color: #218838;
}

.cancel-edit {
  background-color: #6c757d;
  color: white;
}

.cancel-edit:hover {
  background-color: #5a6268;
}

.context-menu {
  display: none;
  position: absolute;
  background-color: white;
  border: 2px solid #000;
  border-radius: 5px;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
  z-index: 2000;
  transition: all 0.5s ease;
}


.context-menu button {
  background: none;
  border: none;
  padding: 10px;
  width: 100%;
  text-align: left;
  cursor: pointer;
}

.context-menu button:hover {
  background-color: #d2d2d2;
}

.context-menu .delete-option:hover {
  color: white;
  background-color: #dc3545;
}

body.dark-mode .context-menu {
  background-color: #555;
  color: #f4f4f4;
  border-color: #666;
  border: 2px solid #fff;
}

body.dark-mode .context-menu button {
  color: white;
}

body.dark-mode .context-menu button:hover {
  background-color: #666;
}

body.dark-mode .context-menu .delete-option:hover {
  color: white;
  background-color: #dc3545;
}