@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+KR:wght@400;700&family=Noto+Serif+KR:wght@400;700&display=swap');

body {
    font-family: 'Noto Sans KR', sans-serif;
    background-color: #f0f2f5;
    color: #333;
    margin: 0;
    padding-top: 80px; 
    padding-bottom: 70px; /* Add padding to prevent content from hiding behind the sticky footer */
    background-image: url("data:image/svg+xml,%3Csvg width='6' height='6' viewBox='0 0 6 6' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='%239C92AC' fill-opacity='0.1'%3E%3Cpath d='M5 0h1L0 6V5zM6 5v1H5z'/%3E%3C/g%3E%3C/svg%3E");
}

header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background-color: #fff;
    padding: 15px 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    height: 50px;
}

h1 {
    font-size: 1.4rem;
    margin: 0;
    flex-shrink: 0;
}

.header-controls {
    display: flex;
    align-items: center;
    gap: 20px;
}

#level-selector {
    font-size: 1rem;
    padding: 8px 12px;
    border: 1px solid #ddd;
    border-radius: 8px;
    background-color: #fff;
    cursor: pointer;
    -webkit-appearance: none; 
    -moz-appearance: none;
    appearance: none;
    background-image: url('data:image/svg+xml;charset=US-ASCII,%3Csvg%20xmlns%3D%22http%3A//www.w3.org/2000/svg%22%20width%3D%22292.4%22%20height%3D%22292.4%22%3E%3Cpath%20fill%3D%22%236200EA%22%20d%3D%22M287%2069.4a17.6%2017.6%200%200%200-13-5.4H18.4c-5%200-9.3%201.8-12.9%205.4A17.6%2017.6%200%200%200%200%2082.2c0%205%201.8%209.3%205.4%2012.9l128%20127.9c3.6%203.6%207.8%205.4%2012.8%205.4s9.2-1.8%2012.8-5.4L287%2095c3.5-3.5%205.4-7.8%205.4-12.8%200-5-1.9-9.4-5.4-12.8z%22/%3E%3C/svg%3E');
    background-repeat: no-repeat;
    background-position: right 12px top 50%;
    background-size: .65em auto;
    padding-right: 30px; /* Make space for the arrow */
}

#progress-tracker {
    display: flex;
    align-items: center;
    gap: 20px;
    font-size: 1.1rem;
    font-weight: 500;
}

#progress-tracker span {
    display: flex;
    align-items: center;
    gap: 8px;
}

#total-count {
    color: #555;
}

#correct-count {
    color: #2e7d32;
}

#correct-count::before {
    content: 'O:';
}

#incorrect-count {
    color: #c62828;
}

#incorrect-count::before {
    content: 'X:';
}

#reset-button {
    font-size: 1rem;
    padding: 8px 18px;
    border: none;
    background-color: #6200ea;
    color: white;
    border-radius: 8px;
    cursor: pointer;
    transition: background-color 0.3s;
}

#reset-button:hover {
    background-color: #3700b3;
}

#hanja-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 20px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

footer {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background-color: #fff;
    padding: 10px 30px;
    box-shadow: 0 -2px 4px rgba(0,0,0,0.1);
    text-align: center;
    height: 50px;
}

footer p {
    margin: 5px 0;
    color: #888;
}