.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 20px;
}


body {
    font-family: Arial, sans-serif;
    margin: 40px;
    background-color: #f9f9f9;
    color: #333;

    /* Zentrierung + vertikal ausrichten */
    display: flex;
    flex-direction: column;
    align-items: center;
}

main, #upload-form, #chat-form, #chat-box, #report-container {
    max-width: 900px;
    width: 100%;
    box-sizing: border-box;
}

h1 {
    text-align: center;
    color: #222;
}

form {
    margin-bottom: 20px;
}

label {
    display: block;
    margin-top: 10px;
}

input[type="file"],
input[type="text"] {
    width: 100%;
    padding: 8px;
    margin-top: 5px;
    margin-bottom: 10px;
    box-sizing: border-box;
}

button {
    padding: 8px 16px;
    background-color: #0055a5;
    color: white;
    border: none;
    cursor: pointer;
    width: 100%;
    box-sizing: border-box;
    border-radius: 4px;
    font-weight: bold;
}

button:hover {
    background-color: #003d7a;
}

#loading {
    background-color: #fff3cd;
    border: 1px solid #ffeeba;
    padding: 10px;
    margin-bottom: 20px;
    font-weight: bold;
    text-align: center;
}

#chat-box {
    border: 1px solid #ddd;
    padding: 15px;
    height: 300px;
    overflow-y: auto;
    background-color: #fff;
    margin-bottom: 10px;
    border-radius: 6px;
    font-size: 14px;
}

.chat-message {
    margin-bottom: 12px;
}

.chat-message strong {
    display: block;
    color: #333;
}

.chat-message.user {
    background-color: #e6f7ff;
    padding: 8px;
    border-left: 4px solid #1890ff;
    border-radius: 4px;
}

.chat-message.chatgpt {
    background-color: #f6ffed;
    padding: 8px;
    border-left: 4px solid #52c41a;
    border-radius: 4px;
}

.chat-message.system {
    background-color: #fffbe6;
    padding: 8px;
    border-left: 4px solid #faad14;
    border-radius: 4px;
}

#upload-form {
    max-width: 500px;
    margin: 0 auto 30px auto;
    padding: 20px;
    background: white;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    font-size: 16px;
}

#upload-form label {
    display: block;
    margin-top: 15px;
    font-weight: 600;
    color: #003366;
}

#upload-form select,
#upload-form input[type="file"] {
    width: 100%;
    padding: 8px 10px;
    margin-top: 5px;
    border: 1px solid #bbb;
    border-radius: 4px;
    font-size: 15px;
    box-sizing: border-box;
    transition: border-color 0.3s ease;
}

#upload-form select:focus,
#upload-form input[type="file"]:focus {
    border-color: #0055a5;
    outline: none;
}

#upload-form button {
    margin-top: 25px;
    width: 100%;
    background-color: #0055a5;
    color: white;
    font-weight: bold;
    border: none;
    padding: 12px 0;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.25s ease;
}

#upload-form button:hover {
    background-color: #003d7a;
}

#chat-box,
#chat-form {
  display: none;
}