body {
  width: 280px;
  padding: 20px;
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  display: flex;
  flex-direction: column;
  align-items: center;
  background-color: #f0f2f5;
  color: #333;
}

.header {
  margin-bottom: 20px;
  width: 100%;
  border-bottom: 2px solid #e1e4e8;
  padding-bottom: 15px;
}

.header h1 {
  font-size: 18px;
  font-weight: 600;
  text-align: center;
  margin: 0;
  color: #2c3e50;
}

.buttons-wrapper {
  display: flex;
  flex-direction: column;
  width: 100%;
  gap: 15px;
}

.buttons-row {
  display: flex;
  justify-content: space-between;
  width: 100%;
  gap: 10px;
}

button {
  padding: 10px 15px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  background-color: #3498db;
  color: white;
  border: none;
  border-radius: 8px;
  text-align: center;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  transition: all 0.3s ease;
  outline: none;
  position: relative;
  overflow: hidden;
}

button::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 5px;
  height: 5px;
  background: rgba(255, 255, 255, 0.5);
  opacity: 0;
  border-radius: 100%;
  transform: scale(1, 1) translate(-50%);
  transform-origin: 50% 50%;
}

button:hover {
  transform: translateY(-3px);
  box-shadow: 0 7px 14px rgba(0, 0, 0, 0.18);
}

button:hover::after {
  animation: ripple 1s ease-out;
}

@keyframes ripple {
  0% {
    transform: scale(0, 0);
    opacity: 0.5;
  }
  20% {
    transform: scale(25, 25);
    opacity: 0.3;
  }
  100% {
    opacity: 0;
    transform: scale(40, 40);
  }
}

.buttons-row button {
  flex: 1;
}

button#bulk-delete,
button#toggle-checkboxes,
button#bulk-archive {
  font-size: 16px;
  width: 100%;
  margin-top: 5px;
  padding: 12px 15px;
}

button#add-checkboxes {
  background-color: #2ecc71;
}
button#remove-checkboxes {
  background-color: #e74c3c;
}
button#toggle-checkboxes {
  background-color: #f39c12;
}
button#bulk-delete {
  background-color: #e74c3c;
}
button#bulk-archive {
  background-color: #9b59b6;
}

.footer {
  margin-top: 20px;
  width: 100%;
  font-size: 12px;
  text-align: center;
  border-top: 2px solid #e1e4e8;
  padding-top: 15px;
  display: flex;
  justify-content: center;
  gap: 20px;
}

#sponsorLink {
  display: inline-flex;
  align-items: center;
  padding: 8px 15px;
  background-color: #34495e;
  border-radius: 5px;
  color: #fff;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.3s ease;
  font-weight: 500;
}

#sponsorLink:hover {
  background-color: #2c3e50;
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

#sponsorLink .icon-text {
  display: flex;
  align-items: center;
  gap: 8px;
}

#sponsorLink:hover {
  background-color: #993366;
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}