:root {
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --background-color: #f5f6fa;
    --border-color: #dcdde1;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--background-color);
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 2rem auto;
    padding: 0 1rem;
}

h1 {
    color: var(--primary-color);
    text-align: center;
    margin-bottom: 2rem;
}

.input-section {
    background: white;
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    margin-bottom: 2rem;
}

#userInput {
    width: 100%;
    height: 200px;
    padding: 1rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    resize: vertical;
    margin-bottom: 1rem;
}

.model-selection {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
}

.select-group {
    flex: 1;
}

label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--primary-color);
}

select {
    width: 100%;
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
}

#processButton {
    width: 100%;
    padding: 1rem;
    background-color: var(--secondary-color);
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1rem;
    transition: background-color 0.3s;
}

#processButton:hover {
    background-color: #2980b9;
}

.output-section {
    background: white;
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    margin-bottom: 2rem;
}

.usage-section {
    background: white;
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    margin-bottom: 2rem;
}

.tox-tinymce {
    border: 1px solid var(--border-color) !important;
}

#usage-report {
    width: 100%;
    height: 200px;
    padding: 1rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background: white;
    resize: vertical;
    font-family: 'Courier New', monospace;
    font-size: 14px;
    line-height: 1.4;
}

#usage-report div {
    max-width: 100%;
    overflow-x: auto;
}

#usage-report ul {
    margin: 0;
    padding-left: 1.5rem;
}

#usage-report li {
    margin-bottom: 0.5rem;
}