body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    padding: 20px;
    background-color: #f5f7fa;
    color: #333;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    background: white;
    padding: 25px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

h1 {
    color: #2c3e50;
    text-align: center;
    margin-bottom: 30px;
    font-weight: 600;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

th, td {
    border: 1px solid #e0e0e0;
    padding: 12px 15px;
    text-align: left;
}

th {
    background-color: #3498db;
    color: white;
    font-weight: 500;
}

tr:nth-child(even) {
    background-color: #f8f9fa;
}

tr:hover {
    background-color: #f1f7fd;
}

.action-btn {
    padding: 6px 12px;
    margin: 0 5px;
    cursor: pointer;
    border: none;
    border-radius: 4px;
    font-weight: 500;
    transition: all 0.2s;
}

.action-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.search-box {
    margin: 25px 0;
    display: flex;
    gap: 10px;
}

.search-box input {
    flex-grow: 1;
    padding: 8px 12px;
    border: 1px solid #ddd;
    border-radius: 4px;
}

.search-box button {
    padding: 8px 16px;
}

.import-section {
    margin: 20px 0;
    padding: 15px;
    background: #f8f9fa;
    border-radius: 6px;
    border: 1px solid #e0e0e0;
}

button {
    background-color: #3498db;
    color: white;
    border: none;
    padding: 8px 16px;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.2s;
}

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

#rankingStats {
    margin-top: 30px;
    background: #f8f9fa;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

#rankingStats h3 {
    color: #2c3e50;
    margin-top: 0;
    font-weight: 600;
}