:root {
    --primary-color: #e57373; /* Light red from the figure */
    --secondary-color: #81c784; /* Light green from the figure */
    --tertiary-color: #ffe0b2; /* Light orange/yellow from the figure */
    --dark-text: #333;
    --light-text: #666;
    --background: #fff;
    --section-bg: #f9f9f9;
    --border-radius: 8px;
    /* --box-shadow: 0 4px 6px rgba(0,0,0,0.1); */
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', sans-serif;
}

body {
    background-color: var(--background);
    color: var(--dark-text);
    line-height: 1.6;
}

header, main, footer {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

header {
    text-align: center;
    padding: 40px 20px;
}

h1 {
    font-size: 2.5rem;
    margin-bottom: 15px;
    color: var(--dark-text);
    font-weight: 600;
    letter-spacing: -0.02em;
}

h2 {
    font-size: 1.8rem;
    margin: 25px 0 15px;
    color: var(--dark-text);
    font-weight: 500;
    letter-spacing: -0.01em;
}

h3 {
    font-size: 1.0rem;
    margin: 20px 0 10px;
    color: var(--dark-text);
    letter-spacing: -0.01em;
}

p {
    margin-bottom: 15px;
    font-weight: 700;
    line-height: 1.7;
}

.authors {
    margin-bottom: 20px;
    color: var(--light-text);
    font-style: italic;
}

.btn {
    display: inline-block;
    background-color: var(--primary-color);
    color: white;
    padding: 10px 20px;
    text-decoration: none;
    border-radius: var(--border-radius);
    font-weight: bold;
    transition: background-color 0.3s;
}

.btn:hover {
    background-color: #d32f2f;
}

.abstract {
    background-color: var(--section-bg);
    padding: 25px;
    border-radius: var(--border-radius);
    margin: 20px 0;
    box-shadow: var(--box-shadow);
}

.figure-container {
    text-align: center;
    margin: 30px 0;
}

.figure {
    max-width: 100%;
    height: 400px;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
}

.method-section {
    background-color: var(--section-bg);
    padding: 25px;
    border-radius: var(--border-radius);
    margin: 30px 0;
    box-shadow: var(--box-shadow);
}

.approach-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.model-highlight {
    background-color: rgba(52, 152, 219, 0.1);
    padding: 20px;
    border-radius: var(--border-radius);
    border-left: 4px solid var(--secondary-color);
}

.retrieval-demo {
    background-color: var(--section-bg);
    padding: 25px;
    border-radius: var(--border-radius);
    margin: 30px 0;
    box-shadow: var(--box-shadow);
}

.demo-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.metric-badge {
    background-color: rgba(52, 152, 219, 0.1);
    padding: 10px 10px;
    border-radius: var(--border-radius);
    font-size: 0.9rem;
}

/* Comparison table styles */
.comparison-table {
    width: 100%;
    border-collapse: collapse;
    margin: 10px 0 30px 0;
    box-shadow: var(--box-shadow);
    border-radius: var(--border-radius);
    overflow: hidden;
}

.comparison-table th {
    padding: 10px;
    text-align: center;
    background-color: var(--dark-text);
    color: white;
}

.comparison-table th:first-child {
    text-align: left;
    width: 200px;
}

.comparison-table td {
    padding: 10px;
    text-align: center;
    border: 1px solid #eee;
    background-color: white;
    font-weight: 800;
}

.comparison-table td:first-child {
    text-align: left;
    color: white;
}

.audio-cell {
    padding: 15px;
    background-color: white;
}

.audio-player {
    width: 100%;
    margin: 0;
    height: 50px;
}

.key-insight {
    background-color: var(--secondary-color);
    color: white;
    padding: 20px;
    border-radius: var(--border-radius);
    margin: 30px 0;
}

.tag-header {
    background-color: var(--tertiary-color);
    padding: 10px 15px;
    border-radius: var(--border-radius);
    display: inline-block;
    margin-bottom: 15px;
}

.tag-header h3 {
    margin: 0;
    color: var(--dark-text);
}

.results {
    background-color: var(--section-bg);
    padding: 25px;
    border-radius: var(--border-radius);
    margin: 30px 0;
    box-shadow: var(--box-shadow);
}

footer {
    text-align: center;
    padding: 30px 20px;
    color: var(--light-text);
    font-size: 0.9rem;
    border-top: 1px solid #eee;
    margin-top: 60px;
}

@media (max-width: 768px) {
    .approach-grid {
        grid-template-columns: 1fr;
    }
    
    .demo-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .metric-badge {
        margin-top: 10px;
    }
}