/**
 * 留言區塊樣式
 * ============================================
 */

/* 留言區塊容器 */
.comments-section {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--color-border, #e0e0e0);
}

.comments-section .section-title {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: var(--color-text, #333);
}

.comments-section .section-title i {
    color: var(--color-primary, #667eea);
}

.comment-count {
    font-size: 0.875rem;
    font-weight: 400;
    color: var(--color-text-light, #666);
    margin-left: 0.5rem;
}

/* 留言表單 */
.comment-form-container {
    margin-bottom: 2rem;
}

.comment-form {
    display: flex;
    gap: 1rem;
}

.comment-form .user-avatar {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--color-gray-200, #e5e5e5);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.comment-form .user-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.comment-form .user-avatar i {
    color: var(--color-text-light, #999);
    font-size: 1rem;
}

.comment-form .form-content {
    flex: 1;
}

.comment-form textarea {
    width: 100%;
    min-height: 80px;
    padding: 0.75rem 1rem;
    border: 1px solid var(--color-border, #ddd);
    border-radius: 8px;
    font-size: 0.9375rem;
    line-height: 1.5;
    resize: vertical;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.comment-form textarea:focus {
    outline: none;
    border-color: var(--color-primary, #667eea);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.comment-form textarea::placeholder {
    color: var(--color-text-light, #999);
}

.comment-form .form-actions {
    display: flex;
    justify-content: flex-end;
    margin-top: 0.75rem;
}

.comment-form .btn-submit {
    padding: 0.5rem 1.25rem;
    background: var(--color-primary, #667eea);
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.2s, transform 0.1s;
}

.comment-form .btn-submit:hover {
    background: var(--color-primary-dark, #5a6fd6);
}

.comment-form .btn-submit:active {
    transform: scale(0.98);
}

.comment-form .btn-submit:disabled {
    background: var(--color-gray-300, #ccc);
    cursor: not-allowed;
}

/* 登入提示 */
.login-prompt {
    padding: 1.5rem;
    background: var(--color-gray-100, #f5f5f5);
    border-radius: 8px;
    text-align: center;
    color: var(--color-text-light, #666);
}

.login-prompt a {
    color: var(--color-primary, #667eea);
    font-weight: 500;
    text-decoration: none;
}

.login-prompt a:hover {
    text-decoration: underline;
}

/* 留言列表 */
.comments-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.comment-item {
    display: flex;
    gap: 1rem;
}

.comment-item .comment-avatar {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--color-gray-200, #e5e5e5);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.comment-item .comment-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.comment-item .comment-avatar i {
    color: var(--color-text-light, #999);
    font-size: 1rem;
}

.comment-item .comment-body {
    flex: 1;
    min-width: 0;
}

.comment-item .comment-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.375rem;
}

.comment-item .comment-author {
    font-weight: 600;
    color: var(--color-text, #333);
    font-size: 0.9375rem;
}

.comment-item .comment-date {
    font-size: 0.8125rem;
    color: var(--color-text-light, #999);
}

.comment-item .comment-content {
    font-size: 0.9375rem;
    line-height: 1.6;
    color: var(--color-text, #444);
    word-break: break-word;
}

.comment-item .comment-actions {
    display: flex;
    gap: 1rem;
    margin-top: 0.5rem;
}

.comment-item .comment-actions button {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0;
    background: none;
    border: none;
    color: var(--color-text-light, #888);
    font-size: 0.8125rem;
    cursor: pointer;
    transition: color 0.2s;
}

.comment-item .comment-actions button:hover {
    color: var(--color-primary, #667eea);
}

.comment-item .comment-actions button.btn-delete:hover {
    color: var(--color-danger, #e74c3c);
}

/* 回覆列表 */
.comment-replies {
    margin-top: 1rem;
    margin-left: 3rem;
    padding-left: 1rem;
    border-left: 2px solid var(--color-border, #e0e0e0);
}

.comment-replies .comment-item {
    padding: 0.75rem 0;
}

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

.comment-replies .comment-avatar {
    width: 32px;
    height: 32px;
}

.comment-replies .comment-author {
    font-size: 0.875rem;
}

.comment-replies .comment-content {
    font-size: 0.875rem;
}

/* 回覆表單 */
.reply-form-container {
    margin-top: 0.75rem;
    margin-left: 3rem;
}

.reply-form {
    display: flex;
    gap: 0.75rem;
}

.reply-form .user-avatar {
    width: 32px;
    height: 32px;
}

.reply-form textarea {
    min-height: 60px;
    font-size: 0.875rem;
}

.reply-form .form-actions {
    gap: 0.5rem;
}

.reply-form .btn-cancel {
    padding: 0.375rem 0.75rem;
    background: none;
    border: 1px solid var(--color-border, #ddd);
    border-radius: 6px;
    color: var(--color-text-light, #666);
    font-size: 0.8125rem;
    cursor: pointer;
    transition: background-color 0.2s;
}

.reply-form .btn-cancel:hover {
    background: var(--color-gray-100, #f5f5f5);
}

.reply-form .btn-submit {
    padding: 0.375rem 0.75rem;
    font-size: 0.8125rem;
}

/* 更多留言 / 更多回覆 */
.load-more-comments,
.load-more-replies {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0;
    background: none;
    border: none;
    color: var(--color-primary, #667eea);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: color 0.2s;
}

.load-more-comments:hover,
.load-more-replies:hover {
    color: var(--color-primary-dark, #5a6fd6);
}

.load-more-replies {
    margin-left: 3rem;
    margin-top: 0.5rem;
}

/* 空狀態 */
.comments-empty {
    padding: 2rem;
    text-align: center;
    color: var(--color-text-light, #999);
}

.comments-empty i {
    font-size: 2rem;
    margin-bottom: 0.75rem;
    opacity: 0.5;
}

.comments-empty p {
    margin: 0;
}

/* 載入中 */
.comments-loading {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    color: var(--color-text-light, #999);
}

.comments-loading i {
    animation: spin 1s linear infinite;
    margin-right: 0.5rem;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* 響應式 */
@media (max-width: 768px) {
    .comment-form {
        flex-direction: column;
    }
    
    .comment-form .user-avatar {
        display: none;
    }
    
    .comment-replies {
        margin-left: 1.5rem;
    }
    
    .reply-form-container {
        margin-left: 1.5rem;
    }
    
    .load-more-replies {
        margin-left: 1.5rem;
    }
}