/**
 * notifications.css - 通知システムスタイル
 * バックグラウンド生成通知、通知パネル等
 */

/* ==================== ヘッダーアクション ==================== */

.header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

/* ==================== 通知ベル ==================== */

.notification-wrapper {
    position: relative;
}

.notification-bell {
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.2s;
    position: relative;
}

.notification-bell:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

.bell-icon {
    font-size: 1.4rem;
    filter: grayscale(0);
}

/* 通知バッジ */
.notification-badge {
    position: absolute;
    top: 2px;
    right: 2px;
    background: #e74c3c;
    color: white;
    font-size: 0.65rem;
    font-weight: bold;
    min-width: 18px;
    height: 18px;
    border-radius: 9px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 4px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    animation: badge-pulse 2s infinite;
}

@keyframes badge-pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.1);
    }
}

/* ==================== 通知パネル ==================== */

.notification-panel {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    width: 360px;
    max-width: calc(100vw - 20px);
    max-height: 70vh;
    background: white;
    border-radius: 12px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15);
    z-index: 1000;
    display: none;
    overflow: hidden;
    flex-direction: column;
}

.notification-panel.active {
    display: flex;
}

/* パネルヘッダー */
.notification-panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px;
    border-bottom: 1px solid #eee;
    background: #f8f9fa;
}

.notification-panel-header h3 {
    margin: 0;
    font-size: 1rem;
    font-weight: 600;
    color: #333;
}

.mark-all-read-btn {
    background: none;
    border: none;
    color: var(--primary-color, #4a90d9);
    font-size: 0.8rem;
    cursor: pointer;
    padding: 4px 8px;
    border-radius: 4px;
    transition: background-color 0.2s;
}

.mark-all-read-btn:hover {
    background-color: rgba(74, 144, 217, 0.1);
}

/* 通知リスト */
.notification-list {
    overflow-y: auto;
    flex: 1;
    max-height: 400px;
}

/* 空状態 */
.notification-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 40px 20px;
    color: #888;
}

.notification-empty-icon {
    font-size: 2.5rem;
    margin-bottom: 12px;
    opacity: 0.5;
}

.notification-empty p {
    margin: 0;
    font-size: 0.9rem;
}

/* 通知アイテム */
.notification-item {
    display: flex;
    align-items: flex-start;
    padding: 14px 16px;
    border-bottom: 1px solid #f0f0f0;
    gap: 12px;
    transition: background-color 0.2s;
}

.notification-item:hover {
    background-color: #f8f9fa;
}

.notification-item.unread {
    background-color: #f0f7ff;
}

.notification-item.unread:hover {
    background-color: #e5f0fc;
}

.notification-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.notification-content {
    flex: 1;
    min-width: 0;
}

.notification-title {
    font-weight: 600;
    font-size: 0.9rem;
    color: #333;
    margin-bottom: 4px;
}

.notification-message {
    font-size: 0.85rem;
    color: #666;
    margin-bottom: 6px;
    line-height: 1.4;
}

.notification-time {
    font-size: 0.75rem;
    color: #999;
}

.notification-actions {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 8px;
    flex-shrink: 0;
}

.notification-action-btn {
    background: var(--primary-color, #4a90d9);
    color: white;
    border: none;
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 0.8rem;
    cursor: pointer;
    transition: background-color 0.2s;
    white-space: nowrap;
}

.notification-action-btn:hover {
    background: var(--primary-hover, #3a7bc8);
}

.notification-delete-btn {
    background: none;
    border: none;
    color: #999;
    font-size: 1rem;
    cursor: pointer;
    padding: 4px;
    border-radius: 4px;
    transition: all 0.2s;
}

.notification-delete-btn:hover {
    background-color: rgba(231, 76, 60, 0.1);
    color: #e74c3c;
}

/* ==================== バックグラウンド生成ボタン ==================== */

.ai-generate-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: center;
}

.ai-generate-actions .btn {
    flex: 1;
    min-width: 200px;
}

#generate-questions-bg-btn {
    background: linear-gradient(135deg, #6c757d 0%, #495057 100%);
    border: none;
}

#generate-questions-bg-btn:hover {
    background: linear-gradient(135deg, #5a6268 0%, #3d4246 100%);
}

/* バックグラウンド生成中インジケーター */
.background-generating-indicator {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 12px 16px;
    margin-top: 12px;
    background: linear-gradient(135deg, #e8f4fd 0%, #d4e9f7 100%);
    border-radius: 8px;
    color: #2980b9;
    font-size: 0.9rem;
}

.spinner-small {
    width: 18px;
    height: 18px;
    border: 2px solid rgba(41, 128, 185, 0.3);
    border-top-color: #2980b9;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* ==================== モバイル対応 ==================== */

@media (max-width: 600px) {
    .header-actions {
        gap: 8px;
    }

    .notification-bell {
        padding: 6px;
    }

    .bell-icon {
        font-size: 1.2rem;
    }

    .notification-badge {
        min-width: 16px;
        height: 16px;
        font-size: 0.6rem;
        top: 0;
        right: 0;
    }

    /* モバイルではパネルを画面幅いっぱいに */
    .notification-panel {
        position: fixed;
        top: 60px;
        right: 10px;
        left: 10px;
        width: auto;
        max-width: none;
        max-height: calc(100vh - 80px);
        border-radius: 12px;
    }

    .notification-list {
        max-height: calc(100vh - 160px);
    }

    .notification-item {
        padding: 12px;
        gap: 10px;
    }

    .notification-icon {
        font-size: 1.3rem;
        width: 28px;
        height: 28px;
    }

    .notification-title {
        font-size: 0.85rem;
    }

    .notification-message {
        font-size: 0.8rem;
    }

    .notification-actions {
        flex-direction: row;
        align-items: center;
    }

    .notification-action-btn {
        padding: 5px 10px;
        font-size: 0.75rem;
    }

    /* AI生成ボタンの調整 */
    .ai-generate-actions {
        flex-direction: column;
    }

    .ai-generate-actions .btn {
        min-width: 100%;
    }

    .background-generating-indicator {
        font-size: 0.85rem;
        padding: 10px 12px;
    }
}

/* 小さいモバイル画面 */
@media (max-width: 400px) {
    .notification-panel {
        right: 5px;
        left: 5px;
    }

    .notification-panel-header {
        padding: 12px;
    }

    .notification-panel-header h3 {
        font-size: 0.9rem;
    }

    .mark-all-read-btn {
        font-size: 0.75rem;
    }
}

/* ==================== ダークモード対応（将来用） ==================== */

@media (prefers-color-scheme: dark) {
    .notification-panel {
        background: #2d2d2d;
        box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
    }

    .notification-panel-header {
        background: #3d3d3d;
        border-bottom-color: #444;
    }

    .notification-panel-header h3 {
        color: #fff;
    }

    .notification-item {
        border-bottom-color: #444;
    }

    .notification-item:hover {
        background-color: #3d3d3d;
    }

    .notification-item.unread {
        background-color: #2a3a4a;
    }

    .notification-item.unread:hover {
        background-color: #354555;
    }

    .notification-title {
        color: #fff;
    }

    .notification-message {
        color: #bbb;
    }

    .notification-time {
        color: #888;
    }

    .notification-empty {
        color: #888;
    }
}