* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: "Helvetica Neue", Arial, "Hiragino Kaku Gothic ProN", "Hiragino Sans", Meiryo, sans-serif;
    background-color: #f4f7f6;
    color: #333;
    padding: 20px;
}

.container {
    max-width: 600px;
    margin: 40px auto;
    background: #fff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

h1 {
    text-align: center;
    margin-bottom: 20px;
    color: #2c3e50;
}

.search-box {
    display: flex;
    gap: 10px;
    margin-bottom: 30px;
}

#searchInput {
    flex: 1;
    padding: 12px 15px;
    font-size: 16px;
    border: 1px solid #ccc;
    border-radius: 4px;
    outline: none;
}

#searchInput:focus {
    border-color: #3498db;
    box-shadow: 0 0 5px rgba(52, 152, 219, 0.3);
}

#searchBtn {
    padding: 12px 20px;
    font-size: 16px;
    background-color: #3498db;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.3s;
}

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

.results-list {
    list-style-type: none;
}

.results-list li {
    padding: 15px;
    border-bottom: 1px solid #eee;
}

.results-list li:last-child {
    border-bottom: none;
}

.abbr-title {
    font-size: 20px;
    color: #e74c3c;
    margin-right: 10px;
}

.abbr-full {
    font-size: 16px;
    font-weight: bold;
    color: #34495e;
}

.abbr-meaning {
    display: block;
    margin-top: 5px;
    color: #7f8c8d;
    font-size: 14px;
}