:root {
    --primary-color: #007bff;
    --secondary-color: #6c757d;
    --background-color: #f8f9fa;
    --surface-color: #ffffff;
    --text-color: #212529;
    --border-color: #dee2e6;
    --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

body {
    font-family: var(--font-family);
    background-color: var(--background-color);
    color: var(--text-color);
    margin: 0;
    padding: 2rem;
    line-height: 1.6;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    background-color: var(--surface-color);
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

h1 {
    color: var(--primary-color);
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 0.5rem;
    margin-top: 0;
}

.form-group {
    margin-bottom: 1.5rem;
}

label {
    display: block;
    font-weight: bold;
    margin-bottom: 0.5rem;
}

input, select, textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 1rem;
    box-sizing: border-box;
}

textarea {
    resize: vertical;
}

.form-actions {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
}

.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 4px;
    font-size: 1rem;
    cursor: pointer;
    text-decoration: none;
    color: white;
    background-color: var(--secondary-color);
    text-align: center;
}

.btn-primary {
    background-color: var(--primary-color);
}

.btn:hover {
    opacity: 0.9;
}

.result-box {
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
}

.result-box textarea {
    height: 300px;
    background-color: #f1f1f1;
    color: #333;
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.form-group-inline { display: flex; gap: 2rem; }
.form-group-inline .form-group { flex: 1; }

#progress-container {
    margin: 2rem 0;
}

#progress-bar {
    width: 100%;
    background-color: #e9ecef;
    border-radius: 0.25rem;
    height: 1.5rem;
    overflow: hidden;
}

#progress-bar-inner {
    height: 100%;
    width: 0%;
    background-color: var(--primary-color);
    transition: width 0.4s ease;
    text-align: center;
    color: white;
    font-weight: bold;
}

#progress-status {
    margin-top: 0.5rem;
    font-style: italic;
    color: var(--secondary-color);
}

.results-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 2rem;
    border-top: 1px solid var(--border-color);
    padding-top: 1.5rem;
}

.critique-warning {
    background-color: #fff3cd;
    color: #856404;
    border: 1px solid #ffeeba;
    border-radius: 4px;
    padding: 0.75rem 1.25rem;
    margin-top: 1rem;
}

.result-box {
    margin-top: 1.5rem;
}

.result-box summary {
    font-weight: bold;
    cursor: pointer;
    padding: 0.5rem;
    background-color: #f8f9fa;
    border: 1px solid var(--border-color);
    border-radius: 4px;
}

.result-box textarea {
    margin-top: 0.5rem;
    height: 250px;
    background-color: #f1f1f1;
}

#prompt-details {
    margin-bottom: 1rem;
}

.chat-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-shrink: 0;
}

.chat-box {
    flex-grow: 1;
    overflow-y: auto;
    border: 1px solid var(--border-color);
    padding: 1rem;
    margin-bottom: 1rem;
    background: #fdfdfd;
    border-radius: 4px;
}

.chat-message {
    margin-bottom: 1rem;
    padding: 0.75rem 1rem;
    border-radius: 8px;
    max-width: 80%;
    word-wrap: break-word;
}

.user-message {
    background-color: #e1f5fe;
    margin-left: auto;
    text-align: right;
}

.assistant-message {
    background-color: #f1f1f1;
    margin-right: auto;
    white-space: pre-wrap; /* Preserve whitespace and newlines */
}

.system-message {
    text-align: center;
    font-style: italic;
    color: var(--secondary-color);
    font-size: 0.9rem;
    white-space: pre-wrap;
}

.chat-input-container {
    display: flex;
    gap: 1rem;
    flex-shrink: 0;
}

.chat-input-container textarea {
    flex-grow: 1;
}

.session-ended-message {
    text-align: center;
    padding: 1rem;
    background-color: #fff3cd;
    color: #856404;
    border: 1px solid #ffeeba;
    border-radius: 4px;
}