/* リセットと基本設定 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #4A90D9;
    --primary-hover: #357ABD;
    --secondary-color: #6C757D;
    --success-color: #28A745;
    --warning-color: #FFC107;
    --danger-color: #DC3545;
    --slack-color: #4A154B;
    --line-color: #00B900;
    --bg-color: #F5F7FA;
    --card-bg: #FFFFFF;
    --text-color: #333333;
    --text-muted: #6C757D;
    --border-color: #DEE2E6;
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Hiragino Sans', 'Noto Sans JP', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
}

/* アプリコンテナ */
.app-container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ヘッダー */
.header {
    background: linear-gradient(135deg, var(--primary-color), #6B5CE7);
    color: white;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: var(--shadow);
}

.header h1 {
    font-size: 1.5rem;
    font-weight: 600;
}

.status-indicators {
    display: flex;
    gap: 0.75rem;
}

.status-badge {
    padding: 0.25rem 0.75rem;
    border-radius: 1rem;
    font-size: 0.75rem;
    background: rgba(255, 255, 255, 0.2);
}

.status-badge.connected {
    background: var(--success-color);
}

.status-badge.disconnected {
    background: var(--danger-color);
}

/* デバッグエリア */
.debug-area {
    background: var(--slack-color);
    color: white;
    margin: 1rem;
    border-radius: 0.5rem;
    overflow: hidden;
}

.debug-header {
    padding: 0.75rem 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(0, 0, 0, 0.2);
}

.debug-header h2 {
    font-size: 0.9rem;
    font-weight: 500;
}

.debug-content {
    padding: 1rem;
}

.debug-content.collapsed {
    display: none;
}

.debug-messages {
    background: rgba(0, 0, 0, 0.2);
    border-radius: 0.25rem;
    padding: 0.75rem;
    max-height: 150px;
    overflow-y: auto;
    margin-bottom: 0.75rem;
}

.debug-messages .message-item {
    padding: 0.25rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 0.85rem;
}

.debug-input {
    display: flex;
    gap: 0.5rem;
}

.debug-input input {
    flex: 1;
    padding: 0.5rem 0.75rem;
    border: none;
    border-radius: 0.25rem;
    font-size: 0.9rem;
}

/* メインコンテンツ */
.main-content {
    flex: 1;
    display: grid;
    grid-template-columns: 1fr 1.5fr 1fr;
    gap: 1rem;
    padding: 0 1rem 1rem;
    min-height: 0;
}

/* セクション共通 */
.message-list,
.reply-area,
.history-area {
    background: var(--card-bg);
    border-radius: 0.5rem;
    box-shadow: var(--shadow);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.section-header {
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.section-header h2 {
    font-size: 1rem;
    font-weight: 600;
}

/* フィルターバー */
.filter-bar {
    padding: 0.5rem 1rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    gap: 0.5rem;
}

.filter-btn {
    padding: 0.25rem 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 1rem;
    background: transparent;
    cursor: pointer;
    font-size: 0.8rem;
    transition: all 0.2s;
}

.filter-btn:hover {
    background: var(--bg-color);
}

.filter-btn.active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

/* メッセージコンテナ */
.messages-container,
.history-container {
    flex: 1;
    overflow-y: auto;
    padding: 0.5rem;
}

/* メッセージアイテム */
.message-item {
    padding: 0.75rem;
    border-radius: 0.5rem;
    margin-bottom: 0.5rem;
    cursor: pointer;
    transition: background 0.2s;
    border-left: 3px solid transparent;
}

.message-item:hover {
    background: var(--bg-color);
}

.message-item.selected {
    background: #E8F4FD;
    border-left-color: var(--primary-color);
}

.message-item.slack {
    border-left-color: var(--slack-color);
}

.message-item.line {
    border-left-color: var(--line-color);
}

.message-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.25rem;
}

.sender-name {
    font-weight: 600;
    font-size: 0.9rem;
}

.message-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-mark-read {
    background: #e8f5e9;
    border: 2px solid var(--success-color);
    border-radius: 4px;
    padding: 0.25rem 0.5rem;
    cursor: pointer;
    font-size: 0.7rem;
    color: var(--success-color);
    font-weight: bold;
    transition: all 0.2s;
}

.btn-mark-read:hover {
    background: var(--success-color);
    color: white;
    border-color: var(--success-color);
}

.btn-add-calendar {
    background: #e3f2fd;
    border: 2px solid var(--primary-color);
    border-radius: 4px;
    padding: 0.25rem 0.5rem;
    cursor: pointer;
    font-size: 0.8rem;
    transition: all 0.2s;
}

.btn-add-calendar:hover {
    background: var(--primary-color);
    border-color: var(--primary-color);
}

.header-actions {
    display: flex;
    gap: 0.5rem;
}

.btn-warning {
    background: var(--warning-color);
    color: #333;
}

.btn-warning:hover:not(:disabled) {
    background: #e0a800;
}

.btn-success {
    background: var(--success-color);
    color: white;
}

.btn-success:hover:not(:disabled) {
    background: #218838;
}

.pending-badge {
    background: #ff9800;
    color: white;
    padding: 0.2rem 0.5rem;
    border-radius: 0.25rem;
    font-size: 0.75rem;
    font-weight: 500;
}

.platform-badge {
    font-size: 0.7rem;
    padding: 0.125rem 0.5rem;
    border-radius: 0.25rem;
    color: white;
}

.platform-badge.slack {
    background: var(--slack-color);
}

.platform-badge.line {
    background: var(--line-color);
}

.message-content {
    font-size: 0.85rem;
    color: var(--text-muted);
    overflow: hidden;
    word-break: break-word;
}

/* リンクスタイル */
.message-link {
    color: var(--primary-color);
    text-decoration: none;
    word-break: break-all;
}

.message-link:hover {
    text-decoration: underline;
}

/* 画像スタイル */
.message-image {
    max-width: 100%;
    max-height: 200px;
    border-radius: 0.5rem;
    margin: 0.5rem 0;
    cursor: pointer;
    display: block;
}

.message-image:hover {
    opacity: 0.9;
}

.history-item .message-image {
    max-height: 150px;
}

.message-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 0.25rem;
}

.message-time {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.channel-name {
    font-size: 0.75rem;
    color: #1976d2;
    background: #e3f2fd;
    padding: 0.2rem 0.5rem;
    border-radius: 0.25rem;
    font-weight: 500;
}

/* 返信エリア */
.reply-target {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.reply-composer {
    flex: 1;
    padding: 1rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    overflow-y: auto;
}

.input-area label,
.preview-area label {
    display: block;
    font-size: 0.85rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.input-area textarea {
    width: 100%;
    min-height: 100px;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    resize: vertical;
    font-family: inherit;
    font-size: 0.9rem;
}

.tone-selector {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.tone-selector label {
    font-size: 0.85rem;
    margin: 0;
}

.tone-selector select {
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: 0.25rem;
    font-size: 0.85rem;
}

.preview-area {
    flex: 1;
}

.preview-content {
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    padding: 0.75rem;
    min-height: 100px;
    font-size: 0.9rem;
    white-space: pre-wrap;
}

.preview-actions {
    display: flex;
    gap: 0.5rem;
    margin-top: 0.5rem;
    align-items: center;
}

.preview-actions #send-btn {
    margin-left: auto;
    padding: 0.5rem 1.5rem;
}

.send-area {
    display: flex;
    justify-content: flex-end;
}

/* 履歴エリア */
.history-item {
    padding: 0.5rem 0.75rem;
    border-radius: 0.5rem;
    margin-bottom: 0.5rem;
    max-width: 85%;
}

.history-item.sent {
    background: var(--primary-color);
    color: white;
    margin-left: auto;
}

.history-item.received {
    background: var(--bg-color);
}

.history-item .sender {
    font-size: 0.75rem;
    font-weight: 500;
    margin-bottom: 0.25rem;
}

.history-item .content {
    font-size: 0.85rem;
    word-break: break-word;
}

.history-item .content a {
    color: inherit;
}

.history-item.sent .content a {
    color: #b3d9ff;
}

.history-item .time {
    font-size: 0.7rem;
    opacity: 0.7;
    margin-top: 0.25rem;
}

/* ボタン */
.btn {
    padding: 0.5rem 1rem;
    border: none;
    border-radius: 0.25rem;
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: 500;
    transition: all 0.2s;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-primary {
    background: var(--primary-color);
    color: white;
}

.btn-primary:hover:not(:disabled) {
    background: var(--primary-hover);
}

.btn-secondary {
    background: var(--secondary-color);
    color: white;
}

.btn-secondary:hover:not(:disabled) {
    background: #5A6268;
}

.btn-small {
    padding: 0.25rem 0.5rem;
    font-size: 0.75rem;
}

.btn-large {
    padding: 0.75rem 2rem;
    font-size: 1rem;
}

/* プレースホルダー */
.placeholder {
    color: var(--text-muted);
    font-style: italic;
    text-align: center;
    padding: 2rem;
}

/* トースト通知 */
.toast-container {
    position: fixed;
    bottom: 1rem;
    right: 1rem;
    z-index: 1000;
}

.toast {
    padding: 0.75rem 1rem;
    border-radius: 0.5rem;
    margin-top: 0.5rem;
    color: white;
    box-shadow: var(--shadow);
    animation: slideIn 0.3s ease;
}

.toast.success {
    background: var(--success-color);
}

.toast.error {
    background: var(--danger-color);
}

.toast.info {
    background: var(--primary-color);
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* レスポンシブ */
@media (max-width: 1200px) {
    .main-content {
        grid-template-columns: 1fr 1fr;
    }

    .history-area {
        grid-column: span 2;
    }
}

@media (max-width: 768px) {
    .main-content {
        grid-template-columns: 1fr;
    }

    .history-area {
        grid-column: span 1;
    }

    .header {
        flex-direction: column;
        gap: 0.5rem;
    }

    .status-indicators {
        flex-wrap: wrap;
        justify-content: center;
    }
}

/* ローディング */
.loading {
    display: inline-block;
    width: 1rem;
    height: 1rem;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 0.8s linear infinite;
}

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

/* 画像表示 */
.message-image {
    max-width: 100%;
    max-height: 300px;
    border-radius: 8px;
    margin: 8px 0;
    cursor: pointer;
    transition: transform 0.2s;
}

.message-image:hover {
    transform: scale(1.02);
}

/* リンク */
.message-link {
    color: var(--primary-color);
    text-decoration: none;
    word-break: break-all;
}

.message-link:hover {
    text-decoration: underline;
}

/* リンクプレビュー */
.link-preview-container {
    display: block;
}

.link-preview {
    display: flex;
    gap: 12px;
    margin: 8px 0;
    padding: 12px;
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    max-width: 400px;
}

.link-preview .preview-image {
    width: 80px;
    height: 80px;
    object-fit: cover;
    border-radius: 4px;
    flex-shrink: 0;
}

.link-preview .preview-content {
    flex: 1;
    min-width: 0;
    overflow: hidden;
}

.link-preview .preview-title {
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 4px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.link-preview .preview-description {
    font-size: 0.8rem;
    color: var(--text-muted);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ==================== 絵文字ピッカー ==================== */

.emoji-picker {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    padding: 8px;
    min-width: 200px;
}

.emoji-picker-header {
    font-size: 0.75rem;
    color: var(--text-muted);
    padding: 4px 8px;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 8px;
}

.emoji-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 4px;
}

.emoji-btn {
    background: none;
    border: none;
    font-size: 1.5rem;
    padding: 8px;
    cursor: pointer;
    border-radius: 6px;
    transition: background-color 0.15s;
}

.emoji-btn:hover {
    background-color: var(--bg-color);
}

.btn-quick-reaction {
    background: none;
    border: none;
    padding: 2px 4px;
    cursor: pointer;
    font-size: 1.1rem;
    transition: transform 0.15s, background-color 0.15s;
    border-radius: 4px;
}

.btn-quick-reaction:hover {
    background-color: var(--bg-color);
    transform: scale(1.2);
}

/* LINE画像・スタンプ */
.line-image {
    max-width: 100%;
    max-height: 200px;
    border-radius: 8px;
    margin: 4px 0;
    display: block;
}

.line-sticker {
    width: 100px;
    height: 100px;
    margin: 4px 0;
    display: block;
}

.history-item .line-image {
    max-height: 150px;
}

.history-item .line-sticker {
    width: 80px;
    height: 80px;
}