body {
  font-family: Arial, sans-serif;
  background: linear-gradient(135deg, #f5f7fa, #c3cfe2);
  margin: 0;
  padding: 20px;
}

.container {
  max-width: 800px;
  margin: auto;
  background: #fff;
  border-radius: 10px;
  padding: 20px;
  box-shadow: 0 0 10px rgba(0,0,0,0.1);
}

h1 {
  text-align: center;
  color: #4285F4;
}

button {
  background: #4285F4;
  color: #fff;
  border: none;
  padding: 8px 12px;
  margin: 5px 0;
  border-radius: 5px;
  cursor: pointer;
  transition: 0.2s ease-in-out;
}

button:hover {
  background: #357ABD;
}

.btn-danger {
  background: #e74c3c;
}

.btn-danger:hover {
  background: #c0392b;
}

.btn-secondary {
  background: #7f8c8d;
}

.btn-secondary:hover {
  background: #626e70;
}

input[type="file"],
input[type="text"] {
  padding: 8px;
  margin-right: 10px;
  border-radius: 5px;
  border: 1px solid #ccc;
}

.file-list {
  list-style: none;
  padding: 0;
  margin-top: 15px;
}

.file-list li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: #f9f9f9;
  padding: 10px;
  border-radius: 5px;
  margin: 5px 0;
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.menu {
  position: relative;
}

.menu .menu-content {
  display: none;
  position: absolute;
  right: 0;
  background: white;
  border: 1px solid #ccc;
  border-radius: 5px;
  box-shadow: 0 2px 5px rgba(0,0,0,0.2);
  z-index: 100;
}

.menu:hover .menu-content {
  display: block;
}

.menu-content button {
  background: none;
  border: none;
  color: #333;
  padding: 10px;
  width: 100%;
  text-align: left;
  cursor: pointer;
}

.progress-container {
  margin-top: 20px;
  display: none;
}

progress {
  width: 100%;
  height: 10px;
  border-radius: 5px;
}