.tool-container {
    background: #fff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    border: 1px solid #eee;
}

.diff-input-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 20px;
}

.input-box label {
    display: block;
    font-size: 0.85rem;
    font-weight: bold;
    margin-bottom: 8px;
    color: #555;
}

textarea {
    width: 100%;
    height: 300px;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.9rem;
    box-sizing: border-box;
    resize: vertical;
}

.control-panel {
    display: flex;
    gap: 10px;
    margin-bottom: 30px;
}

.btn-main {
    flex-grow: 1;
    background: #333f47;
    color: white;
    padding: 12px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-weight: bold;
}

.diff-output-container {
    display: none; /* 初期状態は非表示 */
    border-top: 2px solid #eee;
    padding-top: 20px;
}

.diff-result {
    padding: 20px;
    background: #f9f9f9;
    border: 1px solid #eee;
    border-radius: 4px;
    white-space: pre-wrap;
    word-wrap: break-word;
    font-family: 'Courier New', Courier, monospace;
    line-height: 1.5;
}

/* 差分ハイライト */
.diff-added {
    background-color: #e6ffec;
    color: #24292f;
    text-decoration: none;
}

.diff-removed {
    background-color: #ffebe9;
    color: #24292f;
    text-decoration: line-through;
}

/* 結果ヘッダーの横並び設定 */
.result-header {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 15px;
}

.result-header h3 {
    margin: 0;
}

/* 判定バッジのスタイル */
.status-badge {
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: bold;
}

.status-badge.success {
    background-color: #e6ffec;
    color: #1a7f37;
    border: 1px solid #1a7f37;
}

.status-badge.warning {
    background-color: #fff8e1;
    color: #b78103;
    border: 1px solid #ffe082;
}

/* 既存のdiff-output-containerのpadding-topなどは維持 */
/* 結果コンテナの基本 */
.diff-output-container {
    display: none;
    border: 2px solid transparent; /* 判定時に色を付ける */
    border-radius: 8px;
    padding: 20px;
    margin-top: 30px;
    transition: all 0.3s ease;
}

/* ❌ 差分があるとき：全体を薄い赤枠に */
.diff-output-container.has-diff {
    border-color: #ffcccb;
    background-color: #fffafa;
}

/* ✅ 一致したとき：全体を薄い緑枠に */
.diff-output-container.no-diff {
    border-color: #90ee90;
    background-color: #f0fff0;
}

/* バッジも少し大きく、見やすく調整 */
.status-badge {
    padding: 8px 20px;
    border-radius: 4px;
    font-size: 1.1rem; /* 少し大きく */
    font-weight: bold;
    display: inline-block;
}

.status-badge.success {
    background-color: #2ecc71;
    color: #fff;
    box-shadow: 0 2px 5px rgba(46, 204, 113, 0.3);
}

.status-badge.warning {
    background-color: #e67e22;
    color: #fff;
    box-shadow: 0 2px 5px rgba(230, 126, 34, 0.3);
}

@media (max-width: 800px) {
    .diff-input-wrapper {
        grid-template-columns: 1fr;
    }
}