body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 20px;
    background-color: #f9f7ff;
    color: #333;
}

.container {
    max-width: 800px;
    margin: 0 auto;
}

header {
    text-align: center;
    background: white;
    padding: 20px;
    border-radius: 10px;
    margin-bottom: 20px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

header h1 {
    color: #8b5a8c;
    margin-bottom: 10px;
}

section {
    background: white;
    padding: 20px;
    margin-bottom: 20px;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

section h2 {
    color: #6b4c93;
    margin-bottom: 15px;
}

input {
    padding: 10px;
    margin: 5px;
    border: 2px solid #ddd;
    border-radius: 5px;
    font-size: 16px;
}

button {
    background: #8b5a8c;
    color: white;
    border: none;
    padding: 10px 20px;
    margin: 5px;
    border-radius: 5px;
    cursor: pointer;
    font-size: 16px;
}

button:hover {
    background: #6b4c93;
}

.result {
    background: #f0f8ff;
    border: 2px solid #8b5a8c;
    border-radius: 5px;
    padding: 15px;
    margin-top: 10px;
    min-height: 20px;
}

#projectList {
    background: #f8f8f8;
    padding: 15px;
    border-radius: 5px;
    margin-top: 10px;
}

#projectList li {
    padding: 5px;
    margin: 5px 0;
    background: white;
    border-radius: 3px;
    border-left: 3px solid #8b5a8c;
}

.dark-theme {
    background-color: #2c2c2c;
    color: #8b5a8c;
}

.dark-theme section,
.dark-theme header {
    background: #3c3c3c;
}

.dark-theme input {
    background: #4c4c4c;
    color: white;
    border-color: #666;
}