:root {
    --primary-color: #4e54c8;
    --secondary-color: #8f94fb;
    --light-color: #f8f9fa;
    --dark-color: #343a40;
    --user-message-bg: #e9ecef;
    --assistant-message-bg: #e3f2fd;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, var(--light-color) 0%, #e9ecef 100%);
    min-height: 100vh;
    padding: 20px 0;
}

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

.chat-container {
    background-color: white;
    border-radius: 10px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    padding: 20px;
    margin-bottom: 20px;
}

.chat-messages {
    max-height: 500px;
    overflow-y: auto;
    padding: 10px;
}

.message {
    margin-bottom: 15px;
    display: flex;
    flex-direction: column;
}

.message.user {
    align-items: flex-end;
}

.message.assistant {
    align-items: flex-start;
}

.message-content {
    padding: 12px 16px;
    border-radius: 18px;
    max-width: 80%;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.user .message-content {
    background-color: var(--user-message-bg);
    border-bottom-right-radius: 4px;
}

.assistant .message-content {
    background-color: var(--assistant-message-bg);
    border-bottom-left-radius: 4px;
}

.message-content p {
    margin: 0;
}

.message-content pre {
    background-color: #f8f9fa;
    padding: 10px;
    border-radius: 5px;
    overflow-x: auto;
    margin: 10px 0;
}

.message-content code {
    font-family: 'Courier New', Courier, monospace;
}

/* Artikel-Vorschau Styling */
.message-content img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    margin: 10px 0;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.message-content h3 {
    margin-top: 20px;
    margin-bottom: 10px;
    color: var(--primary-color);
}

.message-content a {
    display: inline-block;
    margin-top: 5px;
    padding: 8px 15px;
    background-color: var(--primary-color);
    color: white;
    text-decoration: none;
    border-radius: 20px;
    font-size: 0.9rem;
    transition: background-color 0.3s ease;
}

.message-content a:hover {
    background-color: var(--secondary-color);
    text-decoration: none;
}

#user-input {
    border-radius: 20px 0 0 20px;
    padding: 12px 20px;
}

#send-button {
    border-radius: 0 20px 20px 0;
    padding: 12px 20px;
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

#send-button:hover {
    background-color: var(--secondary-color);
    border-color: var(--secondary-color);
}

h1 {
    color: var(--primary-color);
    font-weight: 700;
}

.lead {
    color: var(--dark-color);
}

footer {
    font-size: 0.9rem;
}

/* Responsive Anpassungen */
@media (max-width: 576px) {
    .message-content {
        max-width: 90%;
    }
    
    .chat-messages {
        max-height: 400px;
    }
    
    .message-content img {
        max-width: 100%;
    }
}

/* Vector Store Selector Styles */
.vector-store-selector {
    margin-bottom: 15px;
}

.vector-store-selector label {
    font-weight: 500;
    color: var(--dark-color);
    margin-bottom: 5px;
}

.select2-container--default .select2-selection--multiple {
    border-radius: 8px;
    border-color: #ced4da;
}

.select2-container--default .select2-selection--multiple .select2-selection__choice {
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 4px;
    padding: 2px 8px;
}

.select2-container--default .select2-selection--multiple .select2-selection__choice__remove {
    color: white;
    margin-right: 5px;
}

.select2-container--default .select2-results__option--highlighted[aria-selected] {
    background-color: var(--primary-color);
}

/* Warnungstext für Vector Store Auswahl */
.vector-store-selector .form-text.text-warning {
    color: #ffc107 !important;
    font-weight: 500;
}

/* Artikel-Button Styling */
.article-action {
    margin: 10px 0;
    padding: 8px 16px;
    font-size: 14px;
    border-radius: 20px;
    transition: all 0.3s ease;
}

.article-action:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}