# Custom CSS for styling the leaderboard
CUSTOM_CSS = """
/* Main container styling */
.gradio-container {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    max-width: 1400px !important;
    margin: auto !important;
}

/* Header styling */
.header-text {
    text-align: center;
    padding: 20px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-radius: 10px;
    margin-bottom: 20px;
}

/* Tab styling */
.tabs {
    border-radius: 8px;
    overflow: hidden;
}

/* Leaderboard tab container */
.leaderboard-tab-container {
    max-height: calc(100vh - 250px);
    overflow-y: auto;
    overflow-x: hidden;
    padding-right: 10px;
}

/* Dataframe container */
.dataframe-container {
    max-height: 650px;
    overflow-y: auto;
    overflow-x: auto;
    margin: 10px 0;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    padding: 5px;
}

/* Table styling */
.dataframe {
    border-collapse: collapse !important;
    width: 100% !important;
    font-size: 14px !important;
}

.dataframe thead {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%) !important;
    color: white !important;
    position: sticky;
    top: 0;
    z-index: 10;
}

.dataframe thead th {
    padding: 12px 8px !important;
    font-weight: 600 !important;
    text-align: left !important;
    border-bottom: 2px solid #ddd !important;
}

.dataframe tbody tr {
    transition: background-color 0.2s ease;
}

.dataframe tbody tr:nth-child(odd) {
    background-color: #f9f9f9 !important;
}

.dataframe tbody tr:hover {
    background-color: #e8eaf6 !important;
    cursor: pointer;
}

.dataframe tbody td {
    padding: 10px 8px !important;
    border-bottom: 1px solid #ddd !important;
}

/* Rank column styling */
.dataframe tbody td:first-child {
    font-weight: bold;
    color: #667eea;
}

/* Top 3 rows highlighting */
.dataframe tbody tr:nth-child(1) td:first-child {
    color: #FFD700;
    font-size: 16px;
}

.dataframe tbody tr:nth-child(2) td:first-child {
    color: #C0C0C0;
    font-size: 16px;
}

.dataframe tbody tr:nth-child(3) td:first-child {
    color: #CD7F32;
    font-size: 16px;
}

/* Pagination controls */
.pagination-container {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
    margin-top: 15px;
    padding: 15px;
}

/* Button styling */
.pagination-btn {
    min-width: 100px;
}

/* Page info styling */
.page-info {
    font-size: 14px;
    font-weight: 600;
    color: #667eea;
}

/* Footer styling */
.footer-text {
    text-align: center;
    padding: 15px;
    color: #666;
    font-size: 12px;
    margin-top: 20px;
}

/* Dropdown styling */
.dropdown-container {
    margin: 10px 0;
}
"""