/* Design System: Colors */
:root {
    --primary-color: #2E3A59;
    --secondary-color: #00A8E8;
    --background-color: #F5F7FA;
    --text-color: #333333;
    --light-text: #666666;
    --border-color: #D1D5DB;
    --input-focus-color: #007ACC;
    --button-background: #00A8E8;
    --button-hover: #007ACC;
    --button-text: #FFFFFF;
}

/* General Reset */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: Arial, sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.6;
    margin: 0;
    padding: 0;
}

header {
    background-color: var(--primary-color);
    color: var(--button-text);
    text-align: center;
    padding: 20px;
    box-shadow: 0 2px 5px var(--border-color);
}

header h1 {
    font-size: 2rem;
    margin-bottom: 10px;
}

header p {
    font-size: 1rem;
    color: var(--light-text);
    margin: 0;
}

main {
    max-width: 1200px;
    margin: 20px auto;
    padding: 10px;
}

section {
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

section h2 {
    color: var(--primary-color);
    font-size: 1.5rem;
    margin-bottom: 15px;
}

/* Collaborative Document Editor */
#shared-editor {
    width: 100%;
    height: 150px;
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 1rem;
    font-family: Arial, sans-serif;
    resize: vertical;
    transition: border-color 0.3s;
}

#shared-editor:focus {
    outline: 2px solid var(--input-focus-color);
    border-color: var(--input-focus-color);
}

#editor-feedback {
    margin-top: 10px;
    font-size: 0.9rem;
    color: var(--light-text);
}

/* Live Q&A Section */
#qa-feed {
    margin-bottom: 20px;
    padding: 10px;
    max-height: 200px;
    overflow-y: auto;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background-color: #F9FAFB;
}

#questions-list {
    list-style-type: none;
    padding: 0;
}

#questions-list li {
    padding: 10px;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.95rem;
    color: var(--text-color);
    transition: background-color 0.3s;
}

#questions-list li:last-child {
    border-bottom: none;
}

#questions-list li:hover {
    background-color: #E9EEF4;
}

#qa-input {
    display: flex;
    gap: 10px;
}

#question-input {
    flex: 1;
    padding: 10px;
    font-size: 1rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    transition: border-color 0.3s;
}

#question-input:focus {
    outline: 2px solid var(--input-focus-color);
    border-color: var(--input-focus-color);
}

#ask-question-btn {
    background-color: var(--button-background);
    color: var(--button-text);
    border: none;
    padding: 10px 20px;
    font-size: 1rem;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.2s, box-shadow 0.2s;
}

#ask-question-btn:hover {
    background-color: var(--button-hover);
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
}

/* AI-Assisted Content Curation */
#recommendations {
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background-color: #F9FAFB;
    max-height: 250px;
    overflow-y: auto;
}

#recommendation-list {
    list-style-type: none;
    padding: 0;
}

#recommendation-list li {
    padding: 10px;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.95rem;
    color: var(--text-color);
    transition: background-color 0.3s;
}

#recommendation-list li:last-child {
    border-bottom: none;
}

#recommendation-list li:hover {
    background-color: #E9EEF4;
}

/* Responsive Design */
@media (max-width: 768px) {
    header h1 {
        font-size: 1.5rem;
    }

    main {
        padding: 5px;
    }

    section {
        padding: 15px;
    }

    #qa-input {
        flex-direction: column;
        align-items: stretch;
    }

    #question-input {
        margin-bottom: 10px;
    }
}