:root {
    --primary-color: #1336fc;
    --secondary-color: #e6f2ff;
    --accent-color: #47ff8a;
    --text-color: #333;
    --bg-color: #ecfff8;
    --border-color: #dee2e6;
    --shadow-color: rgba(0, 0, 0, 0.1);
}

*, *::before, *::after {
    box-sizing: border-box;
}

body {
    font-family: 'Helvetica Neue', 'Arial', 'Hiragino Kaku Gothic ProN', 'Hiragino Sans', 'Meiryo', sans-serif;
    margin: 0;
    padding: 0;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
}

/* ここで h2, h3, p に同じ左の空白を指定します */
h2, h3, p {
    padding-left: 1rem;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem;
}

.site-header {
    background-color: var(--primary-color);
    color: rgb(236, 236, 236);
    padding: 1rem;
    text-align: center;
    border-bottom: 5px solid var(--accent-color);
}

.site-header h1 {
    margin: 0;
    font-size: 2rem;
}

.site-header p {
    margin: 0.5rem 0 0;
    font-size: 1rem;
}

.filter-nav {
    background-color: #e4e4e4;
    padding: 1rem;
    margin-top: 1rem;
    border-radius: 8px;
    box-shadow: 0 2px 5px var(--shadow-color);
}

.filter-nav h2 {
    font-size: 1.2rem;
    margin-top: 0;
    border-left: 5px solid var(--primary-color);
    padding-left: 0.5rem;
}

.button-group {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.kana-btn, .prefecture-btn {
    padding: 0.5em 1em;
    border: 1px solid var(--border-color);
    background-color: #f0f0f0;
    color: var(--primary-color);
    cursor: pointer;
    border-radius: 5px;
    transition: all 0.2s ease;
    font-weight: bold;
}

.kana-btn:hover, .prefecture-btn:hover {
    background-color: var(--secondary-color);
    transform: translateY(-2px);
}

.kana-btn.active, .prefecture-btn.active {
    background-color: var(--primary-color);
    color: #fff;
    border-color: var(--primary-color);
}

.main-content {
    margin-top: 1rem;
    background-color: #eeeeee;
    padding: 1rem;
    border-radius: 8px;
    box-shadow: 0 2px 5px var(--shadow-color);
}

.action-buttons {
    margin-bottom: 1rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.action-btn {
    padding: 0.6em 1.2em;
    border: none;
    background-color: #555;
    color: white;
    cursor: pointer;
    border-radius: 5px;
    margin-right: 0.5rem;
    margin-bottom: 0.5rem;
    transition: background-color 0.2s;
    font-size: 0.9rem;
}

.action-btn:hover {
    opacity: 0.8;
}

#copy-btn { background-color: #28a745; }
#print-btn { background-color: #17a2b8; }
#png-btn { background-color: #fd7e14; }
#clear-btn { background-color: #dc3545; }
#twitter-btn { background-color: #1DA1F2; }
#facebook-btn { background-color: #1877F2; }
#line-btn { background-color: #06C755; }

.result-wrapper {
    overflow-x: auto;
}

.dialect-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1rem;
}

.dialect-table th, .dialect-table td {
    border: 1px solid var(--border-color);
    padding: 0.75rem;
    text-align: left;
}

.dialect-table thead {
    background-color: var(--secondary-color);
}

.dialect-table th {
    font-weight: bold;
    color: var(--primary-color);
}

.dialect-table tbody tr:nth-child(even) {
    background-color: #f8f8f8;
}

.dialect-table tbody tr:hover {
    background-color: #e9ecef;
}

.site-footer {
    text-align: center;
    margin-top: 2rem;
    padding: 1rem;
    font-size: 0.9rem;
    color: #666;
}

.site-footer a {
    color: var(--primary-color);
    text-decoration: none;
}

.site-footer a:hover {
    text-decoration: underline;
}

@media (max-width: 768px) {
    .site-header h1 {
        font-size: 1.5rem;
    }
    .container {
        padding: 0.5rem;
    }
    .button-group {
        gap: 0.3rem;
    }
    .kana-btn, .prefecture-btn, .action-btn {
        font-size: 0.8rem;
        padding: 0.4em 0.8em;
    }
    .dialect-table th, .dialect-table td {
        padding: 0.5rem;
        font-size: 0.9rem;
    }
}

@media print {
    body {
        background-color: #fff;
    }
    .site-header, .filter-nav, .action-buttons, .site-footer {
        display: none;
    }
    .main-content {
        box-shadow: none;
        margin: 0;
        padding: 0;
    }
    .container {
        width: 100%;
        max-width: 100%;
        padding: 0;
        margin: 0;
    }
    .dialect-table, .dialect-table tbody, .dialect-table tr, .dialect-table td {
        page-break-inside: avoid;
    }
    a[href]:after {
        content: none !important;
    }
}