:root {
    --primary: #0056b3;
    --primary-hover: #003d82;
    --bg: #f8f9fa;
    --card-bg: #ffffff;
    --text: #333333;
    --text-light: #666666;
    --border: #dee2e6;
    --radius: 8px;
}

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

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem;
}

header {
    text-align: center;
    margin-bottom: 3rem;
}

h1 {
    margin-bottom: 0.5rem;
    color: var(--primary);
}

.upload-section {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: var(--radius);
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    text-align: center;
    margin-bottom: 2rem;
}

input[type="file"] {
    display: block;
    margin: 0 auto 1.5rem auto;
}

button {
    background-color: var(--primary);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius);
    font-size: 1rem;
    cursor: pointer;
    transition: background-color 0.2s;
    font-weight: 500;
}

button:hover {
    background-color: var(--primary-hover);
}

.hidden {
    display: none !important;
}

.results-container {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

.card {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: var(--radius);
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
}

textarea {
    width: 100%;
    padding: 1rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-family: monospace;
    font-size: 0.9rem;
    resize: vertical;
    margin-bottom: 1rem;
    box-sizing: border-box;
}

ul {
    list-style-type: none;
    padding: 0;
}

ul li {
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
}

ul li:last-child {
    border-bottom: none;
}