/**
 * ペア決めツール - 専用スタイル
 */

/* セレクトボックス */
.pair-select {
    padding: 6px 12px;
    font-size: 14px;
    color: var(--color-text);
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    cursor: pointer;
    appearance: auto;
}

.pair-select:focus {
    outline: none;
    border-color: var(--color-primary);
}

/* オプショングループ */
.option-group {
    display: flex;
    align-items: center;
    gap: 10px;
}

/* 結果ヘッダー */
.result-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.result-actions {
    display: flex;
    gap: 12px;
}

/* 結果グリッド */
.pair-result-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 16px;
}

/* 各グループカード */
.pair-group-card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: transform 0.2s ease;
}

.pair-group-card:hover {
    transform: translateY(-2px);
}

.pair-group-header {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 14px;
    background: var(--color-primary);
    color: var(--color-white);
    font-family: var(--font-display);
    font-size: 13px;
    font-weight: 700;
}

.pair-group-icon {
    font-size: 16px;
}

.pair-group-body {
    padding: 12px 14px;
}

.pair-member {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 0;
    font-size: 14px;
    color: var(--color-text);
    line-height: 1.6;
}

.pair-member + .pair-member {
    border-top: 1px dashed var(--color-border);
}

.pair-member-icon {
    flex-shrink: 0;
    width: 22px;
    height: 22px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: 50%;
}

/* シャッフルアニメーション */
@keyframes fadeSlideIn {
    from {
        opacity: 0;
        transform: translateY(12px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.pair-group-card {
    animation: fadeSlideIn 0.3s ease forwards;
}

.pair-group-card:nth-child(1) { animation-delay: 0.05s; }
.pair-group-card:nth-child(2) { animation-delay: 0.1s; }
.pair-group-card:nth-child(3) { animation-delay: 0.15s; }
.pair-group-card:nth-child(4) { animation-delay: 0.2s; }
.pair-group-card:nth-child(5) { animation-delay: 0.25s; }
.pair-group-card:nth-child(6) { animation-delay: 0.3s; }
.pair-group-card:nth-child(7) { animation-delay: 0.35s; }
.pair-group-card:nth-child(8) { animation-delay: 0.4s; }
.pair-group-card:nth-child(9) { animation-delay: 0.45s; }
.pair-group-card:nth-child(10) { animation-delay: 0.5s; }

/* 履歴 */
.history-item {
    padding: 16px 0;
    border-bottom: 1px solid var(--color-border);
}

.history-item:first-child {
    padding-top: 0;
}

.history-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.history-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
}

.history-time {
    font-size: 12px;
    color: var(--color-text-muted);
}

.history-badge {
    display: inline-block;
    padding: 2px 10px;
    font-size: 12px;
    font-weight: 500;
    color: var(--color-primary);
    background: rgba(61, 90, 128, 0.08);
    border-radius: 12px;
}

.history-groups {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.history-group-tag {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 10px;
    font-size: 13px;
    color: var(--color-text-secondary);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    line-height: 1.5;
}

.history-group-label {
    font-weight: 600;
    color: var(--color-primary);
    margin-right: 2px;
}

/* シャッフルボタンのアニメーション */
#shuffleBtn {
    transition: transform 0.15s ease, background-color 0.2s ease;
}

#shuffleBtn:active {
    transform: scale(0.96);
}

/* レスポンシブ対応 */
@media (max-width: 600px) {
    .pair-result-grid {
        grid-template-columns: 1fr;
    }

    .option-group {
        flex-direction: column;
        align-items: flex-start;
        gap: 6px;
        width: 100%;
    }

    .pair-select {
        width: 100%;
    }

    .result-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }

    .history-meta {
        flex-direction: column;
        align-items: flex-start;
        gap: 4px;
    }

    .history-groups {
        gap: 6px;
    }
}